/****************************************************************************
** $Id: qt/qlistview.cpp   3.1.2   edited Feb 17 16:59 $
**
** Implementation of QListView widget class
**
** Created : 970809
**
** Copyright (C) 1992-2003 Trolltech AS.  All rights reserved.
**
** This file is part of the widgets module of the Qt GUI Toolkit.
**
** This file may be distributed under the terms of the Q Public License
** as defined by Trolltech AS of Norway and appearing in the file
** LICENSE.QPL included in the packaging of this file.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
** licenses may use this file in accordance with the Qt Commercial License
** Agreement provided with the Software.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
**   information about Qt Commercial License Agreements.
** See http://www.trolltech.com/qpl/ for QPL licensing information.
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
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**********************************************************************/

#include "qlistview.h"
#ifndef QT_NO_LISTVIEW
#include "qtimer.h"
#include "qheader.h"
#include "qpainter.h"
#include "qcursor.h"
#include "qptrstack.h"
#include "qptrlist.h"
#include "qstrlist.h"
#include "qapplication.h"
#include "qbitmap.h"
#include "qdatetime.h"
#include "qptrdict.h"
#include "qptrvector.h"
#include "qiconset.h"
#include "qcleanuphandler.h"
#include "qpixmapcache.h"
#include "qtl.h"
#include "qdragobject.h"
#include "qlineedit.h"
#include "qvbox.h"
#include "qtooltip.h"
#include "qstyle.h"
#include "../kernel/qinternal_p.h"

const int Unsorted = 16383;

static QCleanupHandler<QBitmap> qlv_cleanup_bitmap;
struct QListViewPrivate
{
    // classes that are here to avoid polluting the global name space

    // the magical hidden mother of all items
    class Root: public QListViewItem {
    public:
	Root( QListView * parent );

	void setHeight( int );
	void invalidateHeight();
	void setup();
	QListView * theListView() const;

	QListView * lv;
    };

    // for the stack used in drawContentsOffset()
    class Pending {
    public:
	Pending( int level, int ypos, QListViewItem * item)
	    : l(level), y(ypos), i(item) {};

	int l; // level of this item; root is -1 or 0
	int y; // level of this item in the tree
	QListViewItem * i; // the item itself
    };

    // to remember what's on screen
    class DrawableItem {
    public:
	DrawableItem( Pending * pi ) { y = pi->y; l = pi->l; i = pi->i; };
	int y;
	int l;
	QListViewItem * i;
    };

    // for sorting
    class SortableItem {
    public:
	/*
	  We could be smarter and keep a pointer to the QListView
	  item instead of numCols, col and asc. This would then allow
	  us to use the physical ordering of columns rather than the
	  logical. Microsoft uses the logical ordering, so there is
	  some virtue in doing so, although it prevents the user from
	  chosing the secondary key.
	*/
	QListViewItem * item;
	int numCols;
	int col;
	bool asc;

	int cmp( const SortableItem& i ) const {
	    int diff = item->compare( i.item, col, asc );
	    if ( diff == 0 && numCols != 1 ) {
		for ( int j = 0; j < numCols; j++ ) {
		    if ( j != col ) {
			diff = item->compare( i.item, j, asc );
			if ( diff != 0 )
			    break;
		    }
		}
	    }
	    return diff;
	}
	bool operator<( const SortableItem& i ) const { return cmp( i ) < 0; }
	bool operator<=( const SortableItem& i ) const { return cmp( i ) <= 0; }
	bool operator>( const SortableItem& i ) const { return cmp( i ) > 0; }
    };

    class ItemColumnInfo {
    public:
	ItemColumnInfo(): pm( 0 ), next( 0 ), truncated( FALSE ), dirty( FALSE ), allow_rename( FALSE ), width( 0 ) {}
	~ItemColumnInfo() { delete pm; delete next; }
	QString text, tmpText;
	QPixmap * pm;
	ItemColumnInfo * next;
	uint truncated : 1;
	uint dirty : 1;
	uint allow_rename : 1;
	int width;
    };

    class ViewColumnInfo {
    public:
	ViewColumnInfo(): align(Qt::AlignAuto), sortable(TRUE), next( 0 ) {}
	~ViewColumnInfo() { delete next; }
	int align;
	bool sortable;
	ViewColumnInfo * next;
    };

    // private variables used in QListView
    ViewColumnInfo * vci;
    QHeader * h;
    Root * r;
    uint rootIsExpandable : 1;
    int margin;

    QListViewItem * focusItem, *highlighted, *oldFocusItem;

    QTimer * timer;
    QTimer * dirtyItemTimer;
    QTimer * visibleTimer;
    int levelWidth;

    // the list of drawables, and the range drawables covers entirely
    // (it may also include a few items above topPixel)
    QPtrList<DrawableItem> * drawables;
    int topPixel;
    int bottomPixel;

    QPtrDict<void> * dirtyItems;

    QListView::SelectionMode selectionMode;

    // Per-column structure for information not in the QHeader
    struct Column {
	QListView::WidthMode wmode;
    };
    QPtrVector<Column> column;

    // suggested height for the items
    int fontMetricsHeight;
    int minLeftBearing, minRightBearing;
    int ellipsisWidth;

    // currently typed prefix for the keyboard interface, and the time
    // of the last key-press
    QString currentPrefix;
    QTime currentPrefixTime;

    // holds a list of iterators
    QPtrList<QListViewItemIterator> *iterators;
    QListViewItem *pressedItem, *selectAnchor;

    QTimer *scrollTimer;
    QTimer *renameTimer;

    // sort column and order   #### may need to move to QHeader [subclass]
    int sortcolumn;
    bool ascending		:1;
    bool sortIndicator		:1;
    // whether to select or deselect during this mouse press.
    bool allColumnsShowFocus	:1;
    bool select			:1;

    // TRUE if the widget should take notice of mouseReleaseEvent
    bool buttonDown		:1;
    // TRUE if the widget should ignore a double-click
    bool ignoreDoubleClick	:1;

    bool clearing		:1;
    bool pressedSelected	:1;
    bool pressedEmptyArea 	:1;

    bool useDoubleBuffer	:1;
    bool toolTips		:1;
    bool fullRepaintOnComlumnChange:1;
    bool updateHeader		:1;

    bool startEdit : 1;
    bool ignoreEditAfterFocus : 1;

    QListView::RenameAction defRenameAction;

    QListViewItem *startDragItem;
    QPoint dragStartPos;
    QListViewToolTip *toolTip;
    int pressedColumn;
    QListView::ResizeMode resizeMode;
};

#ifndef QT_NO_TOOLTIP
class QListViewToolTip : public QToolTip
{
public:
    QListViewToolTip( QWidget *parent, QListView *lv );

    void maybeTip( const QPoint &pos );

private:
    QListView *view;

};

QListViewToolTip::QListViewToolTip( QWidget *parent, QListView *lv )
    : QToolTip( parent ), view( lv )
{
}

void QListViewToolTip::maybeTip( const QPoint &pos )
{
    if ( !parentWidget() || !view || !view->showToolTips() )
	return;

    QListViewItem *item = view->itemAt( pos );
    if ( !item || !item->columns )
	return;
    int col = view->header()->sectionAt( pos.x() );
    QListViewPrivate::ItemColumnInfo *ci = (QListViewPrivate::ItemColumnInfo*)item->columns;
    for ( int i = 0; ci && ( i < col ); ++i )
	ci = ci->next;

    if ( !ci || !ci->truncated )
	return;

    QRect r = view->itemRect( item );
    int headerPos = view->header()->sectionPos( col );
    r.setLeft( headerPos );
    r.setRight( headerPos + view->header()->sectionSize( col ) );
    tip( r, item->text( col ) );
}
#endif

// these should probably be in QListViewPrivate, for future thread safety
static bool activatedByClick;
static QPoint activatedP;


/*!
    \class QListViewItem
    \brief The QListViewItem class implements a list view item.

    \ingroup advanced

    A list view item is a multi-column object capable of displaying
    itself in a QListView. Its design has the following main goals:
    \list
    \i Work quickly and well for \e large sets of data.
    \i Be easy to use in the simple case.
    \endlist

    The easiest way to use QListViewItem is to construct one with a
    few constant strings.
    \code
	(void) new QListViewItem( parent, "first column", "second column" );
    \endcode
    Here we create a new list view item with two literal strings. The
    item becomes a child of \e parent. We've discarded the pointer to
    the item since we can still access it via its \e parent. This
    object will be deleted when \e parent is deleted, as usual for
    \l{QObject}s.

    The parent must be another QListViewItem or a QListView. If the
    parent is a QListView, the item becomes a top-level item within
    that QListView. If the parent is another QListViewItem, the item
    becomes a child of that list view item.

    If you keep the pointer, you can set or change the texts using
    setText(), add pixmaps using setPixmap(), change its mode using
    setSelectable(), setSelected(), setOpen() and setExpandable().
    You'll also be able to change its height using setHeight(), and
    traverse the tree. You don't have to keep the pointer since you
    can get a pointer to any QListViewItem in a QListView using
    QListView::selectedItem(), QListView::currentItem(),
    QListView::firstChild(), QListView::lastItem() and
    QListView::findItem().

    \l{QCheckListItem}s are list view items that have a checkbox or
    radio button and can be used in place of QListViewItems.

    You can traverse the tree as if it were a doubly-linked list using
    itemAbove() and itemBelow(); they return pointers to the items
    directly above and below this item on the screen (even if none of
    the three are actually visible at the moment).

    You can also traverse it as a tree by using parent(),
    firstChild(), and nextSibling().

    Example:
    \code
	QListViewItem * myChild = myItem->firstChild();
	while( myChild ) {
	    doSomething( myChild );
	    myChild = myChild->nextSibling();
	}
    \endcode

    There is also an interator class to traverse a tree of list view
    items. To iterate over all selected items of a list view, do the
    following:
    \code
	QListViewItemIterator it( listview );
	while ( it.current() ) {
	    QListViewItem *item = it.current();
	    ++it;

	    if ( item->isSelected() )
		doSomething( item );
	}
    \endcode

    Note that the order of the children will change when the sorting
    order changes and is undefined if the items are not visible. You
    can, however, call enforceSortOrder() at any time; QListView will
    always call it before it needs to show an item.

    Many programs will need to reimplement QListViewItem. The most
    commonly reimplemented functions are:
    \table
    \header \i Function \i Description
    \row \i \l text()
	 \i Returns the text in a column. Many subclasses will compute
	    this on the fly.
    \row \i \l key()
	 \i Is used for sorting. The default key() simply calls
	    text(), but judicious use of key can be used to sort by
	    date, for example (as QFileDialog does).
    \row \i \l setup()
	 \i Is called before showing the item and whenever the font
	    changes, for example.
    \row \i \l activate()
	 \i Is called whenever the user clicks on the item or presses
	    space when the item is the currently highlighted item.
    \endtable

    Some subclasses call setExpandable(TRUE) even when they have no
    children, and populate themselves when setup() or setOpen(TRUE) is
    called. The \c dirview/dirview.cpp example program uses this
    technique to start up quickly: The files and subdirectories in a
    directory aren't inserted into the tree until they're actually
    needed.

    \img qlistviewitems.png List View Items

    \sa QCheckListItem QListView
*/

/*!
    \fn int QCheckListItem::rtti() const

    Returns 1.

    Make your derived classes return their own values for rtti(), and
    you can distinguish between listview items. You should use values
    greater than 1000, preferably a large random number, to allow for
    extensions to this class.
*/

/*!
    Constructs a new top-level list view item in the QListView \a
    parent.
*/

QListViewItem::QListViewItem( QListView * parent )
{
    init();
    parent->insertItem( this );
}


/*!
    Constructs a new list view item that is a child of \a parent and
    first in the parent's list of children.
*/

QListViewItem::QListViewItem( QListViewItem * parent )
{
    init();
    parent->insertItem( this );
}




/*!
    Constructs an empty list view item that is a child of \a parent
    and is after \a after in the parent's list of children. Since \a
    parent is a QListView the item will be a top-level item.
*/

QListViewItem::QListViewItem( QListView * parent, QListViewItem * after )
{
    init();
    parent->insertItem( this );
    moveToJustAfter( after );
}


/*!
    Constructs an empty list view item that is a child of \a parent
    and is after \a after in the parent's list of children.
*/

QListViewItem::QListViewItem( QListViewItem * parent, QListViewItem * after )
{
    init();
    parent->insertItem( this );
    moveToJustAfter( after );
}



/*!
    Constructs a new top-level list view item in the QListView \a
    parent, with up to eight constant strings \a label1, \a label2, \a
    label3, \a label4, \a label5, \a label6, \a label7 and \a label8
    defining its column contents.

    \sa setText()
*/

QListViewItem::QListViewItem( QListView * parent,
			      QString label1,
			      QString label2,
			      QString label3,
			      QString label4,
			      QString label5,
			      QString label6,
			      QString label7,
			      QString label8 )
{
    init();
    parent->insertItem( this );

    setText( 0, label1 );
    setText( 1, label2 );
    setText( 2, label3 );
    setText( 3, label4 );
    setText( 4, label5 );
    setText( 5, label6 );
    setText( 6, label7 );
    setText( 7, label8 );
}


/*!
    Constructs a new list view item as a child of the QListViewItem \a
    parent with optional constant strings \a label1, \a label2, \a
    label3, \a label4, \a label5, \a label6, \a label7 and \a label8
    as column contents.

    \sa setText()
*/

QListViewItem::QListViewItem( QListViewItem * parent,
			      QString label1,
			      QString label2,
			      QString label3,
			      QString label4,
			      QString label5,
			      QString label6,
			      QString label7,
			      QString label8 )
{
    init();
    parent->insertItem( this );

    setText( 0, label1 );
    setText( 1, label2 );
    setText( 2, label3 );
    setText( 3, label4 );
    setText( 4, label5 );
    setText( 5, label6 );
    setText( 6, label7 );
    setText( 7, label8 );
}

/*!
    Constructs a new list view item in the QListView \a parent that is
    included after item \a after and can contain up to eight column
    texts \a label1, \a label2, \a label3, \a label4, \a label5, \a
    label6, \a label7 and\a label8.

    Note that the order is changed according to QListViewItem::key()
    unless the list view's sorting is disabled using
    QListView::setSorting( -1 ).

    \sa setText()
*/

QListViewItem::QListViewItem( QListView * parent, QListViewItem * after,
			      QString label1,
			      QString label2,
			      QString label3,
			      QString label4,
			      QString label5,
			      QString label6,
			      QString label7,
			      QString label8 )
{
    init();
    parent->insertItem( this );
    moveToJustAfter( after );

    setText( 0, label1 );
    setText( 1, label2 );
    setText( 2, label3 );
    setText( 3, label4 );
    setText( 4, label5 );
    setText( 5, label6 );
    setText( 6, label7 );
    setText( 7, label8 );
}


/*!
    Constructs a new list view item as a child of the QListViewItem \a
    parent. It is inserted after item \a after and may contain up to
    eight strings \a label1, \a label2, \a label3, \a label4, \a
    label5, \a label6, \a label7 and \a label8 as column entries.

    Note that the order is changed according to QListViewItem::key()
    unless the list view's sorting is disabled using
    QListView::setSorting( -1 ).

    \sa setText()
*/

QListViewItem::QListViewItem( QListViewItem * parent, QListViewItem * after,
			      QString label1,
			      QString label2,
			      QString label3,
			      QString label4,
			      QString label5,
			      QString label6,
			      QString label7,
			      QString label8 )
{
    init();
    parent->insertItem( this );
    moveToJustAfter( after );

    setText( 0, label1 );
    setText( 1, label2 );
    setText( 2, label3 );
    setText( 3, label4 );
    setText( 4, label5 );
    setText( 5, label6 );
    setText( 6, label7 );
    setText( 7, label8 );
}

/*!
    (Re)sorts all child items of this item using the last sorting
    configuration (sort column and direction).

    \sa enforceSortOrder()
*/

void QListViewItem::sort()
{
    if ( !listView() )
	 return;
    lsc = Unsorted;
    enforceSortOrder();
    listView()->triggerUpdate();
}

int QListViewItem::RTTI = 0;

/*!
    Returns 0.

    Make your derived classes return their own values for rtti(), and
    you can distinguish between listview items. You should use values
    greater than 1000, preferably a large random number, to allow for
    extensions to this class.
*/

int QListViewItem::rtti() const
{
    return RTTI;
}

/*
    Performs the initializations that's common to the constructors.
*/

void QListViewItem::init()
{
    ownHeight = 0;
    maybeTotalHeight = -1;
    open = FALSE;

    nChildren = 0;
    parentItem = 0;
    siblingItem = childItem = 0;

    columns = 0;

    selected = 0;

    lsc = Unsorted;
    lso = TRUE; // unsorted in ascending order :)
    configured = FALSE;
    expandable = FALSE;
    selectable = TRUE;
    is_root = FALSE;
    allow_drag = FALSE;
    allow_drop = FALSE;
    visible = TRUE;
    renameBox = 0;
    enabled = TRUE;
    mlenabled = FALSE;
}

/*!
    If \a b is TRUE, the item is made visible; otherwise it is hidden.

    If the item is not visible, itemAbove() and itemBelow() will never
    return this item, although you still can reach it by using e.g.
    QListViewItemIterator.
*/

void QListViewItem::setVisible( bool b )
{
    if ( b == (bool)visible )
	return;
    QListView *lv = listView();
    if ( !lv )
	return;
    visible = b;
    configured = FALSE;
    setHeight( 0 );
    invalidateHeight();
    if ( parent() )
	parent()->invalidateHeight();
    else
	lv->d->r->invalidateHeight();
    for ( QListViewItem *i = childItem; i; i = i->siblingItem )
	i->setVisible( b );
    if ( lv )
	lv->triggerUpdate();
}

/*!
    Returns TRUE if the item is visible; otherwise returns FALSE.

    \sa setVisible()
*/

bool QListViewItem::isVisible() const
{
    return (bool)visible;
}

/*!
    If \a b is TRUE, this item can be in-place renamed in the column
    \a col by the user; otherwise it cannot be renamed in-place.
*/

void QListViewItem::setRenameEnabled( int col, bool b )
{
    QListViewPrivate::ItemColumnInfo * l = (QListViewPrivate::ItemColumnInfo*)columns;
    if ( !l ) {
	l = new QListViewPrivate::ItemColumnInfo;
	columns = (void*)l;
    }
    for( int c = 0; c < col; c++ ) {
	if ( !l->next )
	    l->next = new QListViewPrivate::ItemColumnInfo;
	l = l->next;
    }

    if ( !l )
	return;
    l->allow_rename = b;
}

/*!
    Returns TRUE if this item can be in-place renamed in column \a
    col; otherwise returns FALSE.
*/

bool QListViewItem::renameEnabled( int col ) const
{
    QListViewPrivate::ItemColumnInfo * l = (QListViewPrivate::ItemColumnInfo*)columns;
    if ( !l )
	return FALSE;

    while( col && l ) {
	l = l->next;
	col--;
    }

    if ( !l )
	return FALSE;
    return (bool)l->allow_rename;
}

/*!
    If \a b is TRUE the item is enabled; otherwise it is disabled.
    Disabled items are drawn differently (e.g. grayed-out) and are not
    accessible by the user.
*/

void QListViewItem::setEnabled( bool b )
{
    if ( (bool)enabled == b )
	return;
    enabled = b;
    if ( !enabled )
	selected = FALSE;
    QListView *lv = listView();
    if ( lv )
	lv->triggerUpdate();
}

/*!
    Returns TRUE if this item is enabled; otherwise returns FALSE.

    \sa setEnabled()
*/

bool QListViewItem::isEnabled() const
{
    return (bool)enabled;
}

/*!
    If in-place renaming of this item is enabled (see
    renameEnabled()), this function starts renaming the item in cloumn
    \a col, by creating and initializing an edit box.
*/

void QListViewItem::startRename( int col )
{
    if ( !renameEnabled( col ) )
	return;
    if ( renameBox )
	cancelRename( col );
    QListView *lv = listView();
    if ( !lv )
	return;

    if ( lv->d->renameTimer )
	lv->d->renameTimer->stop();

    if ( lv->d->timer->isActive() ) {
	// make sure that pending calculations get finished
	lv->d->timer->stop();
	lv->updateContents();
    }

    if ( lv->currentItem() && lv->currentItem()->renameBox ) {
	if ( lv->d->defRenameAction == QListView::Reject )
	    lv->currentItem()->cancelRename( lv->currentItem()->renameCol );
	else
	    lv->currentItem()->okRename( lv->currentItem()->renameCol );
    }

    if ( this != lv->currentItem() )
	lv->setCurrentItem( this );

    QRect r = lv->itemRect( this );
    r = QRect( lv->viewportToContents( r.topLeft() ), r.size() );
    r.setLeft( lv->header()->sectionPos( col ) );
    r.setWidth( lv->header()->sectionSize( col ) - 1 );
    if ( col == 0 )
	r.setLeft( r.left() + lv->itemMargin() + ( depth() + ( lv->rootIsDecorated() ? 1 : 0 ) ) * lv->treeStepSize() - 1 );
    if ( pixmap( col ) )
	r.setLeft( r.left() + pixmap( col )->width() );
    if ( r.x() - lv->contentsX() < 0 )
	r.setX( lv->contentsX() );
    if ( r.width() > lv->visibleWidth() )
	r.setWidth( lv->visibleWidth() );
    renameBox = new QLineEdit( lv->viewport(), "qt_renamebox" );
    renameBox->setFrameStyle( QFrame::Box | QFrame::Plain );
    renameBox->setLineWidth( 1 );
    renameBox->setText( text( col ) );
    renameBox->selectAll();
    renameBox->installEventFilter( lv );
    lv->addChild( renameBox, r.x(), r.y() );
    renameBox->resize( r.size() );
    lv->viewport()->setFocusProxy( renameBox );
    renameBox->setFocus();
    renameBox->show();
    renameCol = col;
}

/*!
    This function removes the rename box.
*/

void QListViewItem::removeRenameBox()
{
    // Sanity, it should be checked by the functions calling this first anyway
    QListView *lv = listView();
    if ( !lv || !renameBox )
	return;
    bool resetFocus = lv->viewport()->focusProxy() == renameBox;
    delete renameBox;
    renameBox = 0;
    if ( resetFocus ) {
	lv->viewport()->setFocusProxy( lv );
	lv->setFocus();
    }
}

/*!
    This function is called if the user presses Enter during in-place
    renaming of the item in column \a col.

    \sa cancelRename()
*/

void QListViewItem::okRename( int col )
{
    QListView *lv = listView();
    if ( !lv || !renameBox )
	return;
    setText( col, renameBox->text() );
    removeRenameBox();

    // we set the parent lsc to Unsorted if that column is the sorted one
    if ( parent() && (int)parent()->lsc == col )
	parent()->lsc = Unsorted;

    emit lv->itemRenamed( this, col );
    emit lv->itemRenamed( this, col, text( col ) );
}

/*!
    This function is called if the user cancels in-place renaming of
    this item in column \a col (e.g. by pressing Esc).

    \sa okRename()
*/

void QListViewItem::cancelRename( int )
{
    QListView *lv = listView();
    if ( !lv || !renameBox )
	return;
    removeRenameBox();
}

/*!
    Destroys the item, deleting all its children and freeing up all
    allocated resources.
*/

QListViewItem::~QListViewItem()
{
    QListView *lv = listView();

    if ( lv ) {
	if ( renameBox ) {
	    delete renameBox;
	    renameBox = 0;
	}
	if ( lv->d->oldFocusItem == this )
	    lv->d->oldFocusItem = 0;
	if ( lv->d->iterators ) {
	    QListViewItemIterator *i = lv->d->iterators->first();
	    while ( i ) {
		if ( i->current() == this )
		    i->currentRemoved();
		i = lv->d->iterators->next();
	    }
	}
    }

    if ( parentItem )
	parentItem->takeItem( this );
    QListViewItem * i = childItem;
    childItem = 0;
    while ( i ) {
	i->parentItem = 0;
	QListViewItem * n = i->siblingItem;
	delete i;
	i = n;
    }
    delete (QListViewPrivate::ItemColumnInfo *)columns;
}


/*!
    If \a b is TRUE each of the item's columns may contain multiple
    lines of text; otherwise they may only contain a single line.
*/

void QListViewItem::setMultiLinesEnabled( bool b )
{
    mlenabled = b;
}

/*!
    Returns TRUE if the item can display multiple lines of text in its
    columns; otherwise returns FALSE.
*/

bool QListViewItem::multiLinesEnabled() const
{
    return mlenabled;
}

/*!
    If \a allow is TRUE, the listview starts a drag (see
    QListView::dragObject()) when the user presses and moves the mouse
    on this item.
*/


void QListViewItem::setDragEnabled( bool allow )
{
    allow_drag = (uint)allow;
}

/*!
    If \a allow is TRUE, the listview accepts drops onto the item;
    otherwise drops are not allowed.
*/

void QListViewItem::setDropEnabled( bool allow )
{
    allow_drop = (uint)allow;
}

/*!
    Returns TRUE if this item can be dragged; otherwise returns FALSE.

    \sa setDragEnabled()
*/

bool QListViewItem::dragEnabled() const
{
    return (bool)allow_drag;
}

/*!
    Returns TRUE if this item accepts drops; otherwise returns FALSE.

    \sa setDropEnabled(), acceptDrop()
*/

bool QListViewItem::dropEnabled() const
{
    return (bool)allow_drop;
}

/*!
    Returns TRUE if the item can accept drops of type QMimeSource \a
    mime; otherwise returns FALSE.

    The default implementation does nothing and returns FALSE. A
    subclass must reimplement this to accept drops.
*/

bool QListViewItem::acceptDrop( const QMimeSource * ) const
{
    return FALSE;
}

#ifndef QT_NO_DRAGANDDROP

/*!
    This method is called when something was dropped on the item. \a e
    contains all the information about the drop.

    The default implementation does nothing, subclasses may need to
    reimplement this method.
*/

void QListViewItem::dropped( QDropEvent *e )
{
    Q_UNUSED( e );
}

#endif

/*!
    This method is called when a drag entered the item's bounding
    rectangle.

    The default implementation does nothing, subclasses may need to
    reimplement this method.
*/

void QListViewItem::dragEntered()
{
}

/*!
    This method is called when a drag left the item's bounding
    rectangle.

    The default implementation does nothing, subclasses may need to
    reimplement this method.
*/

void QListViewItem::dragLeft()
{
}

/*!
    Inserts \a newChild into this list view item's list of children.
    You should not need to call this function; it is called
    automatically by the constructor of \a newChild.

    Note: The item(s) you insert needs to be unselected if you want to maintain the listviews
    consistency when it is set to Single selection mode.
*/

void QListViewItem::insertItem( QListViewItem * newChild )
{
    QListView *lv = listView();
    if ( lv && lv->currentItem() && lv->currentItem()->renameBox ) {
	if ( lv->d->defRenameAction == QListView::Reject )
	    lv->currentItem()->cancelRename( lv->currentItem()->renameCol );
	else
	    lv->currentItem()->okRename( lv->currentItem()->renameCol );
    }

    if ( !newChild || newChild->parentItem == this )
	return;
    if ( newChild->parentItem )
	newChild->parentItem->takeItem( newChild );
    if ( open )
	invalidateHeight();
    newChild->siblingItem = childItem;
    childItem = newChild;
    nChildren++;
    newChild->parentItem = this;
    lsc = Unsorted;
    newChild->ownHeight = 0;
    newChild->configured = FALSE;
    if ( !lv )
	return;

    if ( lv && !lv->d->focusItem ) {
	lv->d->focusItem = lv->firstChild();
	lv->d->selectAnchor = lv->d->focusItem;
	lv->repaintItem( lv->d->focusItem );
    }
}


/*!
  \fn void QListViewItem::removeItem( QListViewItem * )
  \obsolete

  This function has been renamed takeItem().
*/


/*!
    Removes \a item from this object's list of children and causes an
    update of the screen display. The item is not deleted. You should
    not normally need to call this function because
    QListViewItem::~QListViewItem() calls it.

    The normal way to delete an item is to use \c delete.

    If you need to move an item from one place in the hierarchy to
    another you can use takeItem() to remove the item from the list
    view and then insertItem() to put the item back in its new
    position.

    Note: For Single selection mode, if the selected item is part of the taken
    item(s), it is unselected and a selectionChanged is emitted. For Multi or Extended
    selection, no unselection happens and no selectionChanged signals are emitted.

    \warning This function leaves \a item and its children in a state
    where most member functions are unsafe. Only a few functions work
    correctly on an item in this state, most notably insertItem(). The
    functions that work on detached items are explicitly documented as
    such.

    \sa QListViewItem::insertItem()
*/

void QListViewItem::takeItem( QListViewItem * item )
{
    if ( !item )
	return;

    QListView *lv = listView();
    if ( lv && lv->currentItem() && lv->currentItem()->renameBox ) {
	if ( lv->d->defRenameAction == QListView::Reject )
	    lv->currentItem()->cancelRename( lv->currentItem()->renameCol );
	else
	    lv->currentItem()->okRename( lv->currentItem()->renameCol );
    }
    bool emit_changed = FALSE;
    if ( lv && !lv->d->clearing ) {
	if ( lv->d->oldFocusItem == this )
	    lv->d->oldFocusItem = 0;

	if ( lv->d->iterators ) {
	    QListViewItemIterator *i = lv->d->iterators->first();
	    while ( i ) {
		if ( i->current() == item )
		    i->currentRemoved();
		i = lv->d->iterators->next();
	    }
	}

	invalidateHeight();

	if ( lv->d && lv->d->drawables ) {
	    delete lv->d->drawables;
	    lv->d->drawables = 0;
	}

	if ( lv->d->dirtyItems ) {
	    if ( item->childItem ) {
		delete lv->d->dirtyItems;
		lv->d->dirtyItems = 0;
		lv->d->dirtyItemTimer->stop();
		lv->triggerUpdate();
	    } else {
		lv->d->dirtyItems->take( (void *)item );
	    }
	}

	if ( lv->d->focusItem ) {
	    const QListViewItem * c = lv->d->focusItem;
	    while( c && c != item )
		c = c->parentItem;
	    if ( c == item ) {
		if ( lv->selectedItem() ) {
		    // for Single, setSelected( FALSE ) when selectedItem() is taken
		    lv->selectedItem()->setSelected( FALSE );
		    // we don't emit selectionChanged( 0 )
		    emit lv->selectionChanged();
		}
		if ( item->nextSibling() )
		    lv->d->focusItem = item->nextSibling();
		else if ( item->itemAbove() )
		    lv->d->focusItem = item->itemAbove();
		else
		    lv->d->focusItem = 0;
		emit_changed = TRUE;
	    }
	}

	if ( lv->d->selectAnchor == item )
	    lv->d->selectAnchor = lv->d->focusItem;
    }

    nChildren--;

    QListViewItem ** nextChild = &childItem;
    while( nextChild && *nextChild && item != *nextChild )
	nextChild = &((*nextChild)->siblingItem);

    if ( nextChild && item == *nextChild )
	*nextChild = (*nextChild)->siblingItem;
    item->parentItem = 0;
    item->siblingItem = 0;
    item->ownHeight = 0;
    item->maybeTotalHeight = -1;
    item->configured = FALSE;

    if ( emit_changed )
	emit lv->currentChanged( lv->d->focusItem );
}


/*!
    \fn QString QListViewItem::key( int column, bool ascending ) const

    Returns a key that can be used for sorting by column \a column.
    The default implementation returns text(). Derived classes may
    also incorporate the order indicated by \a ascending into this
    key, although this is not recommended.

    If you want to sort on non-alphabetical data, e.g. dates, numbers,
    etc., reimplement compare().

    \sa compare(), sortChildItems()
*/

QString QListViewItem::key( int column, bool ) const
{
    return text( column );
}


/*!
    Compares this listview item to \a i using the column \a col in \a
    ascending order. Returns -1 if this item is less than \a i, 0 if
    they are equal and 1 if this item is greater than \a i.

    This function is used for sorting.

    The default implementation compares the item keys (key()) using
    QString::localeAwareCompare(). A reimplementation may use
    different values and a different comparison function. Here is a
    reimplementation that uses plain Unicode comparison:

    \code
    int MyListViewItem::compare( QListViewItem *i, int col,
				 bool ascending ) const
    {
	return key( col, ascending ).compare( i->key( col, ascending) );
    }
    \endcode
    We don't recommend using \a ascending so your code can safely
    ignore it.

    \sa key() QString::localeAwareCompare() QString::compare()
*/

int QListViewItem::compare( QListViewItem *i, int col, bool ascending ) const
{
    return key( col, ascending ).localeAwareCompare( i->key( col, ascending ) );
}

/*!
    Sorts this item's children using column \a column. This is done in
    ascending order if \a ascending is TRUE and in descending order if
    \a ascending is FALSE.

    Asks some of the children to sort their children. (QListView and
    QListViewItem ensure that all on-screen objects are properly
    sorted but may avoid or defer sorting other objects in order to be
    more responsive.)

    \sa key() compare()
*/

void QListViewItem::sortChildItems( int column, bool ascending )
{
    // we try HARD not to sort.  if we're already sorted, don't.
    if ( column == (int)lsc && ascending == (bool)lso )
	return;

    if ( column < 0 )
	return;

    lsc = column;
    lso = ascending;

    const int nColumns = listView()->columns();

    // and don't sort if we already have the right sorting order
    if ( column > nColumns || childItem == 0 || childItem->siblingItem == 0 )
	return;

    // make an array for qHeapSort()
    QListViewPrivate::SortableItem * siblings
	= new QListViewPrivate::SortableItem[nChildren];
    QListViewItem * s = childItem;
    int i = 0;
    while ( s && i < nChildren ) {
	siblings[i].numCols = nColumns;
	siblings[i].col = column;
	siblings[i].asc = ascending;
	siblings[i].item = s;
	s = s->siblingItem;
	i++;
    }

    // and sort it.
    qHeapSort( siblings, siblings + nChildren );

    // build the linked list of siblings, in the appropriate
    // direction, and finally set this->childItem to the new top
    // child.
    if ( ascending ) {
	for( i = 0; i < nChildren - 1; i++ )
	    siblings[i].item->siblingItem = siblings[i+1].item;
	siblings[nChildren-1].item->siblingItem = 0;
	childItem = siblings[0].item;
    } else {
	for( i = nChildren - 1; i > 0; i-- )
	    siblings[i].item->siblingItem = siblings[i-1].item;
	siblings[0].item->siblingItem = 0;
	childItem = siblings[nChildren-1].item;
    }
    for ( i = 0; i < nChildren; i++ ) {
	if ( siblings[i].item->isOpen() )
	    siblings[i].item->sort();
    }
    delete[] siblings;
}


/*!
    Sets this item's height to \a height pixels. This implicitly
    changes totalHeight(), too.

    Note that a font change causes this height to be overwritten
    unless you reimplement setup().

    For best results in Windows style we suggest using an even number
    of pixels.

    \sa height() totalHeight() isOpen();
*/

void QListViewItem::setHeight( int height )
{
    if ( ownHeight != height ) {
	if ( visible )
	    ownHeight = height;
	else
	    ownHeight = 0;
	invalidateHeight();
    }
}


/*!
    Invalidates the cached total height of this item, including all
    open children.

    \sa setHeight() height() totalHeight()
*/

void QListViewItem::invalidateHeight()
{
    if ( maybeTotalHeight < 0 )
	return;
    maybeTotalHeight = -1;
    if ( parentItem && parentItem->isOpen() )
	parentItem->invalidateHeight();
}


/*!
    Opens or closes an item, i.e. shows or hides an item's children.

    If \a o is TRUE all child items are shown initially. The user can
    hide them by clicking the <b>-</b> icon to the left of the item.
    If \a o is FALSE, the children of this item are initially hidden.
    The user can show them by clicking the <b>+</b> icon to the left
    of the item.

    \sa height() totalHeight() isOpen()
*/

void QListViewItem::setOpen( bool o )
{
    if ( o == (bool)open || !enabled )
	return;
    open = o;

    // If no children to show simply emit signals and return
    if ( !nChildren ) {
        QListView *lv = listView();
	if ( lv && this != lv->d->r ) {
	    if ( o )
		emit lv->expanded( this );
	    else
		emit lv->collapsed( this );
	}
	return;
    }
    invalidateHeight();

    if ( !configured ) {
	QListViewItem * l = this;
	QPtrStack<QListViewItem> s;
	while( l ) {
	    if ( l->open && l->childItem ) {
		s.push( l->childItem );
	    } else if ( l->childItem ) {
		// first invisible child is unconfigured
		QListViewItem * c = l->childItem;
		while( c ) {
		    c->configured = FALSE;
		    c = c->siblingItem;
		}
	    }
	    l->configured = TRUE;
	    l->setup();
	    l = (l == this) ? 0 : l->siblingItem;
	    if ( !l && !s.isEmpty() )
		l = s.pop();
	}
    }

    QListView *lv = listView();

    if ( open && lv)
	enforceSortOrder();

    if ( isVisible() && lv && lv->d && lv->d->drawables ) {
	lv->d->drawables->clear();
	lv->buildDrawableList();
    }

    if ( lv && this != lv->d->r ) {
	if ( o )
	    emit lv->expanded( this );
	else
	    emit lv->collapsed( this );
    }
}


/*!
    This virtual function is called before the first time QListView
    needs to know the height or any other graphical attribute of this
    object, and whenever the font, GUI style, or colors of the list
    view change.

    The default calls widthChanged() and sets the item's height to the
    height of a single line of text in the list view's font. (If you
    use icons, multi-line text, etc., you will probably need to call
    setHeight() yourself or reimplement it.)
*/

void QListViewItem::setup()
{
    widthChanged();
    QListView * v = listView();

    int ph = 0;
    for ( uint i = 0; i < v->d->column.size(); ++i ) {
	if ( pixmap( i ) )
	    ph = QMAX( ph, pixmap( i )->height() );
    }
    int h;
    if ( mlenabled ) {
	h = ph;
	for ( int c = 0; c < v->columns(); ++c ) {
	    int lines = text( c ).contains( QChar('\n') ) + 1;
	    int tmph = v->d->fontMetricsHeight
		       + v->fontMetrics().lineSpacing() * ( lines - 1 );
	    h = QMAX( h, tmph );
	}
	h += 2*v->itemMargin();
    } else {
	h = QMAX( v->d->fontMetricsHeight, ph ) + 2*v->itemMargin();
    }

    h = QMAX( h, QApplication::globalStrut().height());

    if ( h % 2 > 0 )
	h++;
    setHeight( h );
}




/*!
    This virtual function is called whenever the user clicks on this
    item or presses Space on it.

    \sa activatedPos()
*/

void QListViewItem::activate()
{
}


/*!
    When called from a reimplementation of activate(), this function
    gives information on how the item was activated. Otherwise the
    behavior is undefined.

    If activate() was caused by a mouse press, the function sets \a
    pos to where the user clicked and returns TRUE; otherwise it
    returns FALSE and does not change \a pos.

    \a pos is relative to the top-left corner of this item.

    \warning We recommend that you ignore this function; it is
    scheduled to become obsolete.

    \sa activate()
*/

bool QListViewItem::activatedPos( QPoint &pos )
{
    if ( activatedByClick )
	pos = activatedP;
    return activatedByClick;
}


/*!
    \fn bool QListViewItem::isSelectable() const

    Returns TRUE if the item is selectable (as it is by default);
    otherwise returns FALSE

    \sa setSelectable()
*/


/*!
    Sets this items to be selectable if \a enable is TRUE (the
    default) or not to be selectable if \a enable is FALSE.

    The user is not able to select a non-selectable item using either
    the keyboard or mouse. The application programmer still can, e.g.
    using setSelected().

    \sa isSelectable()
*/

void QListViewItem::setSelectable( bool enable )
{
    selectable = enable;
}


/*!
    \fn bool QListViewItem::isExpandable() const

    Returns TRUE if this item is expandable even when it has no
    children; otherwise returns FALSE.
*/

/*!
    Sets this item to be expandable even if it has no children if \a
    enable is TRUE, and to be expandable only if it has children if \a
    enable is FALSE (the default).

    The dirview example uses this in the canonical fashion. It checks
    whether the directory is empty in setup() and calls
    setExpandable(TRUE) if not; in setOpen() it reads the contents of
    the directory and inserts items accordingly. This strategy means
    that dirview can display the entire file system without reading
    very much at startup.

    Note that root items are not expandable by the user unless
    QListView::setRootIsDecorated() is set to TRUE.

    \sa setSelectable()
*/

void QListViewItem::setExpandable( bool enable )
{
    expandable = enable;
}


/*!
    Makes sure that this object's children are sorted appropriately.

    This works only if every item from the root item down to this item
    is already sorted.

    \sa sortChildItems()
*/

void QListViewItem::enforceSortOrder() const
{
    QListView *lv = listView();
    if ( lv && (lv->d->clearing || lv->d->sortcolumn == Unsorted) )
	return;
    if ( parentItem &&
	 (parentItem->lsc != lsc || parentItem->lso != lso) )
	((QListViewItem *)this)->sortChildItems( (int)parentItem->lsc,
						 (bool)parentItem->lso );
    else if ( !parentItem &&
	      ( (int)lsc != listView()->d->sortcolumn ||
		(bool)lso != listView()->d->ascending ) )
	((QListViewItem *)this)->sortChildItems( listView()->d->sortcolumn,
						 listView()->d->ascending );
}


/*!
    \fn bool QListViewItem::isSelected() const

    Returns TRUE if this item is selected; otherwise returns FALSE.

    \sa setSelected() QListView::setSelected() QListView::selectionChanged()
*/


/*!
    If \a s is TRUE this item is selected; otherwise it is deselected.

    This function does not maintain any invariants or repaint anything
    -- QListView::setSelected() does that.

    \sa height() totalHeight()
*/

void QListViewItem::setSelected( bool s )
{
    if ( listView() && listView()->selectionMode() != QListView::NoSelection) {
	if ( s && isSelectable() )
	    selected = TRUE;
	else
	    selected = FALSE;
    }
}

/*!
    Returns the total height of this object, including any visible
    children. This height is recomputed lazily and cached for as long
    as possible.

    Functions which can affect the total height are, setHeight() which
    is used to set an item's height, setOpen() to show or hide an
    item's children, and invalidateHeight() to invalidate the cached
    height.

    \sa height()
*/

int QListViewItem::totalHeight() const
{
    if ( !visible )
	return 0;
    if ( maybeTotalHeight >= 0 )
	return maybeTotalHeight;
    QListViewItem * that = (QListViewItem *)this;
    if ( !that->configured ) {
	that->configured = TRUE;
	that->setup(); // ### virtual non-const function called in const
    }
    that->maybeTotalHeight = that->ownHeight;

    if ( !that->isOpen() || !that->childCount() )
	return that->ownHeight;

    QListViewItem * child = that->childItem;
    while ( child != 0 ) {
	that->maybeTotalHeight += child->totalHeight();
	child = child->siblingItem;
    }
    return that->maybeTotalHeight;
}


/*!
    Returns the text in column \a column, or QString::null if there is
    no text in that column.

    \sa key() paintCell()
*/

QString QListViewItem::text( int column ) const
{
    QListViewPrivate::ItemColumnInfo * l
	= (QListViewPrivate::ItemColumnInfo*) columns;

    while( column && l ) {
	l = l->next;
	column--;
    }

    return l ? l->text : QString::null;
}


/*!
    Sets the text in column \a column to \a text, if \a column is a
    valid column number and \a text is different from the existing
    text.

    If \a text() has been reimplemented, this function may be a no-op.

    \sa text() key()
*/

void QListViewItem::setText( int column, const QString &text )
{
    if ( column < 0 )
	return;

    QListViewPrivate::ItemColumnInfo * l
	= (QListViewPrivate::ItemColumnInfo*) columns;
    if ( !l ) {
	l = new QListViewPrivate::ItemColumnInfo;
	columns = (void*)l;
    }
    for( int c = 0; c < column; c++ ) {
	if ( !l->next )
	    l->next = new QListViewPrivate::ItemColumnInfo;
	l = l->next;
    }
    if ( l->text == text )
	return;

    int oldLc = 0;
    int newLc = 0;
    if ( mlenabled ) {
	if ( !l->text.isEmpty() )
	    oldLc = l->text.contains( QChar( '\n' ) ) + 1;
	if ( !text.isEmpty() )
	    newLc = text.contains( QChar( '\n' ) ) + 1;
    }

    l->dirty = TRUE;
    l->text = text;
    if ( column == (int)lsc )
	lsc = Unsorted;
    QListView * lv = listView();

    if ( mlenabled && oldLc != newLc )
	setup();
    else
	widthChanged( column );

    if ( lv ) {
	lv->d->useDoubleBuffer = TRUE;
	lv->triggerUpdate();
    }
}


/*!
    Sets the pixmap in column \a column to \a pm, if \a pm is non-null
    and different from the current pixmap, and if \a column is
    non-negative.

    \sa pixmap() setText()
*/

void QListViewItem::setPixmap( int column, const QPixmap & pm )
{
    int oldW = 0;
    int oldH = 0;
    if ( pixmap( column ) ) {
	oldW = pixmap( column )->width();
	oldH = pixmap( column )->height();
    }

    if ( column < 0 )
	return;

    QListViewPrivate::ItemColumnInfo * l
	= (QListViewPrivate::ItemColumnInfo*) columns;
    if ( !l ) {
	l = new QListViewPrivate::ItemColumnInfo;
	columns = (void*)l;
    }

    for( int c = 0; c < column; c++ ) {
	if ( !l->next )
	    l->next = new QListViewPrivate::ItemColumnInfo;
	l = l->next;
    }

    if ( ( pm.isNull() && ( !l->pm || l->pm->isNull() ) ) ||
	 ( l->pm && pm.serialNumber() == l->pm->serialNumber() ) )
	return;

    if ( pm.isNull() ) {
	delete l->pm;
	l->pm = 0;
    } else {
	if ( l->pm )
	    *(l->pm) = pm;
	else
	    l->pm = new QPixmap( pm );
    }

    int newW = 0;
    int newH = 0;
    if ( pixmap( column ) ) {
	newW = pixmap( column )->width();
	newH = pixmap( column )->height();
    }

    if ( oldW != newW || oldH != newH ) {
	setup();
	widthChanged( column );
	invalidateHeight();
    }
    QListView *lv = listView();
    if ( lv ) {
	lv->d->useDoubleBuffer = TRUE;
	lv->triggerUpdate();
    }
}


/*!
    Returns the pixmap for \a column, or 0 if there is no pixmap for
    \a column.

    \sa setText() setPixmap()
*/

const QPixmap * QListViewItem::pixmap( int column ) const
{
    QListViewPrivate::ItemColumnInfo * l
    = (QListViewPrivate::ItemColumnInfo*) columns;

    while( column && l ) {
	l = l->next;
	column--;
    }

    return (l && l->pm) ? l->pm : 0;
}


/*!
    This virtual function paints the contents of one column of an item
    and aligns it as described by \a align.

    \a p is a QPainter open on the relevant paint device. \a p is
    translated so (0, 0) is the top-left pixel in the cell and \a
    width-1, height()-1 is the bottom-right pixel \e in the cell. The
    other properties of \a p (pen, brush, etc) are undefined. \a cg is
    the color group to use. \a column is the logical column number
    within the item that is to be painted; 0 is the column which may
    contain a tree.

    This function may use QListView::itemMargin() for readability
    spacing on the left and right sides of data such as text, and
    should honor isSelected() and QListView::allColumnsShowFocus().

    If you reimplement this function, you should also reimplement
    width().

    The rectangle to be painted is in an undefined state when this
    function is called, so you \e must draw on all the pixels. The
    painter \a p has the right font on entry.

    \sa paintBranches(), QListView::drawContentsOffset()
*/

void QListViewItem::paintCell( QPainter * p, const QColorGroup & cg,
			       int column, int width, int align )
{
    // Change width() if you change this.

    if ( !p )
	return;

    QListView *lv = listView();
    if ( !lv )
	return;
    QFontMetrics fm( p->fontMetrics() );

    // had, but we _need_ the column info for the ellipsis thingy!!!
    if ( !columns ) {
	for ( uint i = 0; i < lv->d->column.size(); ++i ) {
	    setText( i, text( i ) );
	}
    }

    QString t = text( column );

    if ( columns ) {
	QListViewPrivate::ItemColumnInfo *ci = 0;
	// try until we have a column info....
	while ( !ci ) {
	    ci = (QListViewPrivate::ItemColumnInfo*)columns;
	    for ( int i = 0; ci && (i < column); ++i )
		ci = ci->next;

	    if ( !ci ) {
		setText( column, t );
		ci = 0;
	    }
	}

	// if the column width changed and this item was not painted since this change
	if ( ci && ( ci->width != width || ci->text != t || ci->dirty ) ) {
	    ci->text = t;
	    ci->dirty = FALSE;
	    ci->width = width;
	    ci->truncated = FALSE;
	    // if we have to do the ellipsis thingy calc the truncated text
	    int pw = pixmap( column ) ? pixmap( column )->width() + lv->itemMargin() : lv->itemMargin();
	    if ( !mlenabled && fm.width( t ) + pw > width ) {
		// take care of arabic shaping in width calculation (lars)
		ci->truncated = TRUE;
		ci->tmpText = "...";
		int i = 0;
		int len = t.length();
		while ( i < len && fm.width( ci->tmpText + t[ i ] ) + pw < width )
		    ci->tmpText += t[ i++ ];
		ci->tmpText.remove( 0, 3 );
		if ( ci->tmpText.isEmpty() )
		    ci->tmpText = t.left( 1 );
		ci->tmpText += "...";
	    } else if ( mlenabled && fm.width( t ) + pw > width ) {
		QStringList list = QStringList::split( QChar('\n'), t, TRUE );
		for ( QStringList::Iterator it = list.begin(); it != list.end(); ++it ) {
		    QString z = (*it).latin1();
		    if ( fm.width( z ) + pw > width ) {
			ci->truncated = TRUE;
			QString tempText = "...";
			int i = 0;
			int len = z.length();
			while ( i < len && fm.width( tempText + z[ i ]) + pw < width )
			    tempText += z[i++];
			tempText.remove( 0, 3 );
			if ( tempText.isEmpty() )
			    tempText = z.left( 1 );
			tempText += "...";
			*it = tempText;
		    }
		}

		if ( ci->truncated )
		    ci->tmpText = list.join( QString("\n") );
	    }
	}

	// if we have to draw the ellipsis thingy, use the truncated text
	if ( ci && ci->truncated )
	    t = ci->tmpText;
    }

    int marg = lv->itemMargin();
    int r = marg;
    const QPixmap * icon = pixmap( column );

    const BackgroundMode bgmode = lv->viewport()->backgroundMode();
    const QColorGroup::ColorRole crole = QPalette::backgroundRoleFromMode( bgmode );
    if ( cg.brush( crole ) != lv->colorGroup().brush( crole ) )
	p->fillRect( 0, 0, width, height(), cg.brush( crole ) );
    else
	lv->paintEmptyArea( p, QRect( 0, 0, width, height() ) );


    // (lars) what does this do???
#if 0 // RS: ####
    if ( align != AlignLeft )
	marg -= lv->d->minRightBearing;
#endif
    if ( isSelected() &&
	 (column == 0 || listView()->allColumnsShowFocus()) ) {
	p->fillRect( r - marg, 0, width - r + marg, height(),
		     cg.brush( QColorGroup::Highlight ) );
	if ( enabled || !lv )
	    p->setPen( cg.highlightedText() );
	else if ( !enabled && lv)
	    p->setPen( lv->palette().disabled().highlightedText() );
    } else {
	if ( enabled || !lv )
	    p->setPen( cg.text() );
	else if ( !enabled && lv)
	    p->setPen( lv->palette().disabled().text() );
    }


#if 0
    bool reverse = QApplication::reverseLayout();
#else
    bool reverse = FALSE;
#endif
    int iconWidth = 0;

    if ( icon ) {
        iconWidth = icon->width() + lv->itemMargin();
	int xo = r;
	// we default to AlignVCenter.
	int yo = ( height() - icon->height() ) / 2;

	// I guess we may as well always respect vertical alignment.
        if ( align & AlignBottom )
    	    yo = height() - icon->height();

	// respect horizontal alignment when there is no text for an item.
	if ( text(column).isEmpty() ) {
	    if ( align & AlignRight )
		xo = width - 2 * marg - iconWidth;
	    else if ( align & AlignHCenter )
		xo = ( width - iconWidth ) / 2;
	}
	if ( reverse )
		xo = width - 2 * marg - iconWidth;
	p->drawPixmap( xo, yo, *icon );
    }

    if ( !t.isEmpty() ) {
	if ( !mlenabled ) {
	    if ( !(align & AlignTop || align & AlignBottom) )
		align |= AlignVCenter;
	} else {
	    if ( !(align & AlignVCenter || align & AlignBottom) )
		align |= AlignTop;
	}
	if ( !reverse )
	    r += iconWidth;

	if ( !mlenabled ) {
	    p->drawText( r, 0, width-marg-r, height(), align, t );
	} else {
	    p->drawText( r, marg, width-marg-r, height(), align, t );
	}
    }

    if ( mlenabled && column == 0 && isOpen() && childCount() ) {
	int textheight = fm.size( align, t ).height() + 2 * lv->itemMargin();
	textheight = QMAX( textheight, QApplication::globalStrut().height() );
	if ( textheight % 2 > 0 )
	    textheight++;
	if ( textheight < height() ) {
	    int w = lv->treeStepSize() / 2;
	    lv->style().drawComplexControl( QStyle::CC_ListView, p, lv,
					    QRect( 0, textheight, w + 1, height() - textheight + 1 ), cg,
					    lv->isEnabled() ? QStyle::Style_Enabled : QStyle::Style_Default,
					    QStyle::SC_ListViewExpand,
					    QStyle::SC_All, QStyleOption( this ) );
	}
    }
}

/*!
    Returns the number of pixels of width required to draw column \a c
    of list view \a lv, using the metrics \a fm without cropping. The
    list view containing this item may use this information depending
    on the QListView::WidthMode settings for the column.

    The default implementation returns the width of the bounding
    rectangle of the text of column \a c.

    \sa listView() widthChanged() QListView::setColumnWidthMode()
    QListView::itemMargin()
*/
int QListViewItem::width( const QFontMetrics& fm,
			  const QListView* lv, int c ) const
{
    int w;
    if ( mlenabled )
	w = fm.size( AlignVCenter, text( c ) ).width() + lv->itemMargin() * 2
	    - lv->d->minLeftBearing - lv->d->minRightBearing;
    else
	w = fm.width( text( c ) ) + lv->itemMargin() * 2
	    - lv->d->minLeftBearing - lv->d->minRightBearing;
    const QPixmap * pm = pixmap( c );
    if ( pm )
	w += pm->width() + lv->itemMargin(); // ### correct margin stuff?
    return QMAX( w, QApplication::globalStrut().width() );
}


/*!
    Paints a focus indicator on the rectangle \a r using painter \a p
    and colors \a cg.

    \a p is already clipped.

    \sa paintCell() paintBranches() QListView::setAllColumnsShowFocus()
*/

void QListViewItem::paintFocus( QPainter *p, const QColorGroup &cg,
				const QRect & r )
{
    listView()->style().drawPrimitive( QStyle::PE_FocusRect, p, r, cg,
				       (isSelected() ?
					QStyle::Style_FocusAtBorder :
					QStyle::Style_Default),
				       QStyleOption(isSelected() ? cg.highlight() : cg.base() ));
}


/*!
    Paints a set of branches from this item to (some of) its children.

    Painter \a p is set up with clipping and translation so that you
    can draw only in the rectangle you need to; \a cg is the color
    group to use; the update rectangle is at (0, 0) and has size width
    \a w by height \a h. The top of the rectangle you own is at \a y
    (which is never greater than 0 but can be outside the window
    system's allowed coordinate range).

    The update rectangle is in an undefined state when this function
    is called; this function must draw on \e all of the pixels.

    \sa paintCell(), QListView::drawContentsOffset()
*/

void QListViewItem::paintBranches( QPainter * p, const QColorGroup & cg,
				   int w, int y, int h )
{
    listView()->paintEmptyArea( p, QRect( 0, 0, w, h ) );
    if ( !visible )
	return;
    QListView *lv = listView();
    if ( lv ) {
	lv->style().drawComplexControl( QStyle::CC_ListView, p, lv,
					QRect( 0, y, w, h ),
					cg,
					lv->isEnabled() ? QStyle::Style_Enabled :
					QStyle::Style_Default,
					(QStyle::SC_ListViewBranch |
					 QStyle::SC_ListViewExpand),
					QStyle::SC_None, QStyleOption(this));
    }
}


QListViewPrivate::Root::Root( QListView * parent )
    : QListViewItem( parent )
{
    lv = parent;
    setHeight( 0 );
    setOpen( TRUE );
}


void QListViewPrivate::Root::setHeight( int )
{
    QListViewItem::setHeight( 0 );
}


void QListViewPrivate::Root::invalidateHeight()
{
    QListViewItem::invalidateHeight();
    lv->triggerUpdate();
}


QListView * QListViewPrivate::Root::theListView() const
{
    return lv;
}


void QListViewPrivate::Root::setup()
{
    // explicitly nothing
}



/*!
\internal
If called after a mouse click, tells the list view to ignore a
following double click. This state is reset after the next mouse click.
*/

void QListViewItem::ignoreDoubleClick()
{
    QListView *lv = (QListView*)listView();
    lv->d->ignoreDoubleClick = TRUE;
}



/*!
    \fn void  QListView::onItem( QListViewItem *i )

    This signal is emitted when the user moves the mouse cursor onto
    the item \a i, similar to the QWidget::enterEvent() function.
*/

// ### bug here too? see qiconview.cppp onItem/onViewport

/*!
    \fn void  QListView::onViewport()

    This signal is emitted when the user moves the mouse cursor from
    an item to an empty part of the list view.
*/

/*!
    \enum QListView::SelectionMode

    This enumerated type is used by QListView to indicate how it
    reacts to selection by the user.

    \value Single  When the user selects an item, any already-selected
    item becomes unselected, and the user cannot unselect the selected
    item. This means that the user can never clear the selection, even
    though the selection may be cleared by the application programmer
    using QListView::clearSelection().

    \value Multi  When the user selects an item in the most ordinary
    way, the selection status of that item is toggled and the other
    items are left alone.

    \value Extended When the user selects an item in the most ordinary
    way, the selection is cleared and the new item selected. However,
    if the user presses the Ctrl key when clicking on an item, the
    clicked item gets toggled and all other items are left untouched.
    And if the user presses the Shift key while clicking on an item,
    all items between the current item and the clicked item get
    selected or unselected, depending on the state of the clicked
    item. Also, multiple items can be selected by dragging the mouse
    while the left mouse button stays pressed.

    \value NoSelection  Items cannot be selected.

    In other words, \c Single is a real single-selection list view, \c
    Multi a real multi-selection list view, \c Extended is a list view
    where users can select multiple items but usually want to select
    either just one or a range of contiguous items, and \c NoSelection
    is a list view where the user can look but not touch.
*/

/*!
    \enum QListView::ResizeMode

    This enum describes how the header adjusts to resize events which
    affect the width of the listview.

    \value NoColumn The columns do not get resized in resize events.

    \value AllColumns All columns are resized equally to fit the width
    of the listview.

    \value LastColumn The last column is resized to fit the width of
    the listview.
*/

/*!
    \enum QListView::RenameAction

    This enum describes whether a rename operation is accepted if the
    rename editor loses focus without the user pressing Enter.

    \value Accept Rename if Enter is pressed or focus is lost.

    \value Reject Discard the rename operation if focus is lost (and
    Enter has not been pressed).
*/

/*!
    \class QListView
    \brief The QListView class implements a list/tree view.

    \ingroup advanced
    \mainclass

    It can display and control a hierarchy of multi-column items, and
    provides the ability to add new items at any time. Among others
    the user may select one or many items and sort the list in
    increasing or decreasing order by any column.

    The simplest mode of use is to create a QListView, add some column
    headers using addColumn() and create one or more QListViewItem or
    QCheckListItem objects with the QListView as parent:

    \quotefile xml/tagreader-with-features/structureparser.h
    \skipto QListView * table
    \printline
    \quotefile xml/tagreader-with-features/structureparser.cpp
    \skipto addColumn
    \printline addColumn
    \printline
    \skipto new QListViewItem( table
    \printline

    Further nodes can be added to the listview object (the root of the
    tree) or as child nodes to QListViewItems:

    \skipto for ( int i = 0 ; i < attributes.length();
    \printuntil }

    (From \link xml/tagreader-with-features/structureparser.cpp
    xml/tagreader-with-features/structureparser.cpp\endlink)

    The main setup functions are:
    \table
    \header \i Function \i Action
    \row \i \l addColumn()
	 \i Adds a column with text and perhaps width. Columns are
	    counted from the left starting with column 0.
    \row \i \l setColumnWidthMode()
	 \i Sets the column to be resized automatically or not.
    \row \i \l setAllColumnsShowFocus()
	 \i Sets whether items should show keyboard focus using all
	    columns or just column 0. The default is to show focus
	    just using column 0.
    \row \i \l setRootIsDecorated()
	 \i Sets whether root items can be opened and closed by the
	    user and have open/close decoration to their left. The
	    default is FALSE.
    \row \i \l setTreeStepSize()
	 \i Sets how many pixels an item's children are indented
	    relative to their parent. The default is 20. This is
	    mostly a matter of taste.
    \row \i \l setSorting()
	 \i Sets whether the items should be sorted, whether it should
	    be in ascending or descending order, and by what column
	    they should be sorted. By default the list view is sorted
	    by the first column; to switch this off call setSorting( -1 ).
    \endtable

    To handle events such as mouse presses on the list view, derived
    classes can reimplement the QScrollView functions:
    \link QScrollView::contentsMousePressEvent() contentsMousePressEvent\endlink,
    \link QScrollView::contentsMouseReleaseEvent() contentsMouseReleaseEvent\endlink,
    \link QScrollView::contentsMouseDoubleClickEvent() contentsMouseDoubleClickEvent\endlink,
    \link QScrollView::contentsMouseMoveEvent() contentsMouseMoveEvent\endlink,
    \link QScrollView::contentsDragEnterEvent() contentsDragEnterEvent\endlink,
    \link QScrollView::contentsDragMoveEvent() contentsDragMoveEvent\endlink,
    \link QScrollView::contentsDragLeaveEvent() contentsDragLeaveEvent\endlink,
    \link QScrollView::contentsDropEvent() contentsDropEvent\endlink, and
    \link QScrollView::contentsWheelEvent() contentsWheelEvent\endlink.

    There are also several functions for mapping between items and
    coordinates. itemAt() returns the item at a position on-screen,
    itemRect() returns the rectangle an item occupies on the screen,
    and itemPos() returns the position of any item (whether it is
    on-screen or not). firstChild() returns the item at the top of the
    view (not necessarily on-screen) so you can iterate over the items
    using either QListViewItem::itemBelow() or a combination of
    QListViewItem::firstChild() and QListViewItem::nextSibling().

    If you need to move a list view item you can use takeItem() and
    insertItem(). Item's are deleted with delete; to delete all items
    use clear(). See the QListViewItem documentation for examples of
    traversal.

    There are a variety of selection modes described in the
    QListView::SelectionMode documentation. The default is \c Single
    selection, which you can change using setSelectionMode().

    Because QListView offers multiple selection it must display
    keyboard focus and selection state separately. Therefore there are
    functions both to set the selection state of an item
    (setSelected()) and to select which item displays keyboard focus
    (setCurrentItem()).

    QListView emits two groups of signals; one group signals changes
    in selection/focus state and one indicates selection. The first
    group consists of selectionChanged() (applicable to all list
    views), selectionChanged( QListViewItem * ) (applicable only to
    \c Single selection list view), and currentChanged( QListViewItem * ).
    The second group consists of doubleClicked( QListViewItem * ),
    returnPressed( QListViewItem * ),
    rightButtonClicked( QListViewItem *, const QPoint&, int ), etc.

    In Motif style, QListView deviates fairly strongly from the look
    and feel of the Motif hierarchical tree view. This is done mostly
    to provide a usable keyboard interface and to make the list view
    look better with a white background.

    If selectionMode() is \c Single (the default) the user can select
    one item at a time, e.g. by clicking an item with the mouse, see
    \l QListView::SelectionMode for details.

    The listview can be navigated either using the mouse or the
    keyboard. Clicking an <b>-</b> icon closes an item (hides its
    children) and clicking an <b>+</b> icon opens an item (shows its
    children). The keyboard controls are these:
    \table
    \header \i Keypress \i Action
    \row \i Home
	 \i Make the first item current and visible.
    \row \i End
	 \i Make the last item current and visible.
    \row \i Page Up
	 \i Make the item above the top visible item current and visible.
    \row \i Page Down
	 \i Make the item below the bottom visible item current and visible.
    \row \i Up Arrow
	 \i Make the item above the current item current and visible.
    \row \i Down Arrow
	 \i Make the item below the current item current and visible.
    \row \i Left Arrow
	 \i If the current item is closed (<b>+</b> icon) or has no
	    children, make its parent item current and visible. If the
	    current item is open (<b>-</b> icon) close it, i.e. hide its
	    children. Exception: if the current item is the first item
	    and is closed and the horizontal scrollbar is offset to
	    the right the listview will be scrolled left.
    \row \i Right Arrow
	 \i If the current item is closed (<b>+</b> icon) and has
	    children, the item is opened. If the current item is
	    opened (<b>-</b> icon) and has children the item's first
	    child is made current and visible. If the current item has
	    no children the listview is scrolled right.
    \endtable

    If the user starts typing letters with the focus in the listview
    an incremental search will occur. For example if the user types
    'd' the current item will change to the first item that begins
    with the letter 'd'; if they then type 'a', the current item will
    change to the first item that begins with 'da', and so on. If no
    item begins with the letters they type the current item doesn't
    change.

    \warning The list view assumes ownership of all list view items
    and will delete them when it does not need them any more.

    <img src=qlistview-m.png> <img src=qlistview-w.png>

    \sa QListViewItem QCheckListItem
*/

/*!
    \fn void QListView::itemRenamed( QListViewItem * item, int col )

    \overload

    This signal is emitted when \a item has been renamed, e.g. by
    in-place renaming, in column \a col.
*/

/*!
    \fn void QListView::itemRenamed( QListViewItem * item, int col, const QString &text)

    This signal is emitted when \a item has been renamed to \a text,
    e.g. by in in-place renaming, in column \a col.
*/

/*!
    Constructs a new empty list view called \a name with parent \a
    parent.

    Performance is boosted by modifying the widget flags \a f so that
    only part of the QListViewItem children is redrawn. This may be
    unsuitable for custom QListViewItem classes, in which case \c
    WStaticContents and \c WRepaintNoErase should be cleared.

    \sa QWidget::clearWFlags() Qt::WidgetFlags
*/
QListView::QListView( QWidget * parent, const char *name, WFlags f )
    : QScrollView( parent, name, f | WStaticContents | WRepaintNoErase )
{
    init();
}

void QListView::init()
{
    d = new QListViewPrivate;
    d->vci = 0;
    d->timer = new QTimer( this );
    d->levelWidth = 20;
    d->r = 0;
    d->rootIsExpandable = 0;
    d->h = new QHeader( this, "list view header" );
    d->h->installEventFilter( this );
    d->focusItem = 0;
    d->oldFocusItem = 0;
    d->drawables = 0;
    d->dirtyItems = 0;
    d->dirtyItemTimer = new QTimer( this );
    d->visibleTimer = new QTimer( this );
    d->renameTimer = new QTimer( this );
    d->margin = 1;
    d->selectionMode = QListView::Single;
    d->sortcolumn = 0;
    d->ascending = TRUE;
    d->allColumnsShowFocus = FALSE;
    d->fontMetricsHeight = fontMetrics().height();
    d->h->setTracking(TRUE);
    d->buttonDown = FALSE;
    d->ignoreDoubleClick = FALSE;
    d->column.setAutoDelete( TRUE );
    d->iterators = 0;
    d->scrollTimer = 0;
    d->sortIndicator = FALSE;
    d->clearing = FALSE;
    d->minLeftBearing = fontMetrics().minLeftBearing();
    d->minRightBearing = fontMetrics().minRightBearing();
    d->ellipsisWidth = fontMetrics().width( "..." ) * 2;
    d->highlighted = 0;
    d->pressedItem = 0;
    d->selectAnchor = 0;
    d->select = TRUE;
    d->useDoubleBuffer = FALSE;
    d->startDragItem = 0;
    d->toolTips = TRUE;
#ifndef QT_NO_TOOLTIP
    d->toolTip = new QListViewToolTip( viewport(), this );
#endif
    d->updateHeader = FALSE;
    d->fullRepaintOnComlumnChange = FALSE;
    d->resizeMode = NoColumn;
    d->defRenameAction = Reject;
    d->pressedEmptyArea = FALSE;
    d->startEdit = TRUE;
    d->ignoreEditAfterFocus = FALSE;

    setMouseTracking( TRUE );
    viewport()->setMouseTracking( TRUE );

    connect( d->timer, SIGNAL(timeout()),
	     this, SLOT(updateContents()) );
    connect( d->dirtyItemTimer, SIGNAL(timeout()),
	     this, SLOT(updateDirtyItems()) );
    connect( d->visibleTimer, SIGNAL(timeout()),
	     this, SLOT(makeVisible()) );
    connect( d->renameTimer, SIGNAL(timeout()),
	     this, SLOT(startRename()) );

    connect( d->h, SIGNAL(sizeChange( int, int, int )),
	     this, SLOT(handleSizeChange( int, int, int )) );
    connect( d->h, SIGNAL(moved( int, int )),
	     this, SLOT(triggerUpdate()) );
    connect( d->h, SIGNAL(sectionClicked( int )),
	     this, SLOT(changeSortColumn( int )) );
    connect( horizontalScrollBar(), SIGNAL(sliderMoved(int)),
	     d->h, SLOT(setOffset(int)) );
    connect( horizontalScrollBar(), SIGNAL(valueChanged(int)),
	     d->h, SLOT(setOffset(int)) );

    // will access d->r
    QListViewPrivate::Root * r = new QListViewPrivate::Root( this );
    r->is_root = TRUE;
    d->r = r;
    d->r->setSelectable( FALSE );

    viewport()->setFocusProxy( this );
    viewport()->setFocusPolicy( WheelFocus );
    viewport()->setBackgroundMode( PaletteBase );
    setBackgroundMode( PaletteBackground, PaletteBase );
}

/*!
    \property QListView::showSortIndicator
    \brief whether the list view header should display a sort indicator.

    If this property is TRUE, an arrow is drawn in the header of the
    list view to indicate the sort order of the list view contents.
    The arrow will be drawn in the correct column and will point up or
    down, depending on the current sort direction. The default is
    FALSE (don't show an indicator).

    \sa QHeader::setSortIndicator()
*/

void QListView::setShowSortIndicator( bool show )
{
    if ( show == d->sortIndicator )
	return;

    d->sortIndicator = show;
    if ( d->sortcolumn != Unsorted && d->sortIndicator )
	d->h->setSortIndicator( d->sortcolumn, d->ascending );
    else
	d->h->setSortIndicator( -1 );
}

bool QListView::showSortIndicator() const
{
    return d->sortIndicator;
}

/*!
    \property QListView::showToolTips
    \brief whether this list view should show tooltips for truncated column texts

    The default is TRUE.
*/

void QListView::setShowToolTips( bool b )
{
    d->toolTips = b;
}

bool QListView::showToolTips() const
{
    return d->toolTips;
}

/*!
    \property QListView::resizeMode
    \brief whether all, none or the only the last column should be resized

    Specifies whether all, none or only the last column should be
    resized to fit the full width of the listview. The values for this
    property can be one of: \c NoColumn (the default), \c AllColumns
    or \c LastColumn.

    Note: Setting the resize mode should be done after all necessary
    columns have been added to the listview, otherwise the behavior is
    undefined.

    \sa QHeader, header()
*/

void QListView::setResizeMode( ResizeMode m )
{
    d->resizeMode = m;
    if ( m == NoColumn )
	header()->setStretchEnabled( FALSE );
    else if ( m == AllColumns )
	header()->setStretchEnabled( TRUE );
    else
	header()->setStretchEnabled( TRUE, header()->count() - 1 );
}

QListView::ResizeMode QListView::resizeMode() const
{
    return d->resizeMode;
}

/*!
    Destroys the list view, deleting all its items, and frees up all
    allocated resources.
*/

QListView::~QListView()
{
    if ( d->iterators ) {
	QListViewItemIterator *i = d->iterators->first();
	while ( i ) {
	    i->listView = 0;
	    i = d->iterators->next();
	}
	delete d->iterators;
    }

    d->focusItem = 0;
    delete d->r;
    d->r = 0;
    delete d->dirtyItems;
    d->dirtyItems = 0;
    delete d->drawables;
    d->drawables = 0;
    delete d->vci;
    d->vci = 0;
#ifndef QT_NO_TOOLTIP
    delete d->toolTip;
    d->toolTip = 0;
#endif
    delete d;
    d = 0;
}


/*!
    Calls QListViewItem::paintCell() and
    QListViewItem::paintBranches() as necessary for all list view
    items that require repainting in the \a cw pixels wide and \a ch
    pixels high bounding rectangle starting at position \a cx, \a cy
    with offset \a ox, \a oy. Uses the painter \a p.
*/

void QListView::drawContentsOffset( QPainter * p, int ox, int oy,
				    int cx, int cy, int cw, int ch )
{
    if ( columns() == 0 ) {
	paintEmptyArea( p, QRect( cx, cy, cw, ch ) );
	return;
    }

    if ( !d->drawables ||
	 d->drawables->isEmpty() ||
	 d->topPixel > cy ||
	 d->bottomPixel < cy + ch - 1 ||
	 d->r->maybeTotalHeight < 0 )
	buildDrawableList();

    if ( d->dirtyItems ) {
	QRect br( cx - ox, cy - oy, cw, ch );
	QPtrDictIterator<void> it( *(d->dirtyItems) );
	QListViewItem * i;
	while( (i = (QListViewItem *)(it.currentKey())) != 0 ) {
	    ++it;
	    QRect ir = itemRect( i ).intersect( viewport()->rect() );
	    if ( ir.isEmpty() || br.contains( ir ) )
		// we're painting this one, or it needs no painting: forget it
		d->dirtyItems->remove( (void *)i );
	}
	if ( d->dirtyItems->count() ) {
	    // there are still items left that need repainting
	    d->dirtyItemTimer->start( 0, TRUE );
	} else {
	    // we're painting all items that need to be painted
	    delete d->dirtyItems;
	    d->dirtyItems = 0;
	    d->dirtyItemTimer->stop();
	}
    }

    p->setFont( font() );

    QPtrListIterator<QListViewPrivate::DrawableItem> it( *(d->drawables) );

    QRect r;
    int fx = -1, x, fc = 0, lc = 0;
    int tx = -1;
    QListViewPrivate::DrawableItem * current;

    while ( (current = it.current()) != 0 ) {
	++it;
	if ( !current->i->isVisible() )
	    continue;
	int ih = current->i->height();
	int ith = current->i->totalHeight();
	int c;
	int cs;

	// need to paint current?
	if ( ih > 0 && current->y < cy+ch && current->y+ih >= cy ) {
	    if ( fx < 0 ) {
		// find first interesting column, once
		x = 0;
		c = 0;
		cs = d->h->cellSize( 0 );
		while ( x + cs <= cx && c < d->h->count() ) {
		    x += cs;
		    c++;
		    if ( c < d->h->count() )
			cs = d->h->cellSize( c );
		}
		fx = x;
		fc = c;
		while( x < cx + cw && c < d->h->count() ) {
		    x += cs;
		    c++;
		    if ( c < d->h->count() )
			cs = d->h->cellSize( c );
		}
		lc = c;
	    }

	    x = fx;
	    c = fc;
	    // draw to last interesting column

	    bool drawActiveSelection = hasFocus() ||
			    !style().styleHint( QStyle::SH_ItemView_ChangeHighlightOnFocus, this ) ||
			    ( qApp->focusWidget() && qApp->focusWidget()->isPopup() && qApp->focusWidget()->inherits( "QPopupMenu" ) ) ||
			    ( currentItem() && currentItem()->renameBox && currentItem()->renameBox->hasFocus() );
	    const QColorGroup &cg = ( drawActiveSelection ? colorGroup() : palette().inactive() );

	    while ( c < lc && d->drawables ) {
		int i = d->h->mapToLogical( c );
		cs = d->h->cellSize( c );
		r.setRect( x - ox, current->y - oy, cs, ih );
		if ( i == 0 && current->i->parentItem )
		    r.setLeft( r.left() + current->l * treeStepSize() );

		p->save();
		// No need to paint if the cell isn't technically visible
		if ( !( r.width() == 0 || r.height() == 0 ) ) {
		    p->translate( r.left(), r.top() );
		    int ac = d->h->mapToLogical( c );
		    // map to Left currently. This should change once we
		    // can really reverse the listview.
		    int align = columnAlignment( ac );
		    if ( align == AlignAuto ) align = AlignLeft;
		    if ( d->useDoubleBuffer ) {
			QRect a( 0, 0, r.width(), current->i->height() );
			QSharedDoubleBuffer buffer( p, a, QSharedDoubleBuffer::Force );
			if ( buffer.isBuffered() )
			    paintEmptyArea( buffer.painter(), a );
			buffer.painter()->setFont( p->font() );
			buffer.painter()->setPen( p->pen() );
			buffer.painter()->setBrush( p->brush() );
			buffer.painter()->setBrushOrigin( -r.left(), -r.top() );
			current->i->paintCell( buffer.painter(), cg, ac, r.width(),
			    align );
		    } else {
			current->i->paintCell( p, cg, ac, r.width(),
			    align );
		    }
		}
		p->restore();
		x += cs;
		c++;
	    }

	    if ( current->i == d->focusItem && hasFocus() &&
		 !d->allColumnsShowFocus ) {
		p->save();
		int cell = d->h->mapToActual( 0 );
		QRect r( d->h->cellPos( cell ) - ox, current->y - oy, d->h->cellSize( cell ), ih );
		if ( current->i->parentItem )
		    r.setLeft( r.left() + current->l * treeStepSize() );
		if ( r.left() < r.right() )
		    current->i->paintFocus( p, colorGroup(), r );
		p->restore();
	    }
	}

    	const int cell = d->h->mapToActual( 0 );

	// does current need focus indication?
	if ( current->i == d->focusItem && hasFocus() &&
	     d->allColumnsShowFocus ) {
	    p->save();
	    int x = -contentsX();
	    int w = header()->cellPos( header()->count() - 1 ) +
		    header()->cellSize( header()->count() - 1 );

	    r.setRect( x, current->y - oy, w, ih );
	    if ( d->h->mapToActual( 0 ) == 0 || ( current->l == 0 && !rootIsDecorated() ) ) {
		int offsetx = QMIN( current->l * treeStepSize(), d->h->cellSize( cell ) );
		r.setLeft( r.left() + offsetx );
		current->i->paintFocus( p, colorGroup(), r );
	    } else {
		int xdepth = QMIN( treeStepSize() * ( current->i->depth() + ( rootIsDecorated() ? 1 : 0) )
			     + itemMargin(), d->h->cellSize( cell ) );
		xdepth += d->h->cellPos( cell );
		QRect r1( r );
		r1.setRight( d->h->cellPos( cell ) - 1 );
		QRect r2( r );
		r2.setLeft( xdepth - 1 );
		current->i->paintFocus( p, colorGroup(), r1 );
		current->i->paintFocus( p, colorGroup(), r2 );
	    }
	    p->restore();
	}

	if ( tx < 0 )
	    tx = d->h->cellPos( cell );

	// do any children of current need to be painted?
	if ( ih != ith &&
	     (current->i != d->r || d->rootIsExpandable) &&
	     current->y + ith > cy &&
	     current->y + ih < cy + ch &&
	     tx + current->l * treeStepSize() < cx + cw &&
	     tx + (current->l+1) * treeStepSize() > cx ) {
	    // compute the clip rectangle the safe way

	    int rtop = current->y + ih;
	    int rbottom = current->y + ith;
	    int rleft = tx + current->l*treeStepSize();
	    int rright = rleft + treeStepSize();

	    int crtop = QMAX( rtop, cy );
	    int crbottom = QMIN( rbottom, cy+ch );
	    int crleft = QMAX( rleft, cx );
	    int crright = QMIN( rright, cx+cw );

	    r.setRect( crleft-ox, crtop-oy,
		       crright-crleft, crbottom-crtop );

	    if ( r.isValid() ) {
		p->save();
		p->translate( rleft-ox, crtop-oy );
		current->i->paintBranches( p, colorGroup(), treeStepSize(),
					   rtop - crtop, r.height() );
		p->restore();
	    }
	}
    }

    if ( d->r->totalHeight() < cy + ch )
	paintEmptyArea( p, QRect( cx - ox, d->r->totalHeight() - oy,
				  cw, cy + ch - d->r->totalHeight() ) );

    int c = d->h->count()-1;
    if ( c >= 0 &&
	 d->h->cellPos( c ) + d->h->cellSize( c ) < cx + cw ) {
	c = d->h->cellPos( c ) + d->h->cellSize( c );
	paintEmptyArea( p, QRect( c - ox, cy - oy, cx + cw - c, ch ) );
    }
}



/*!
    Paints \a rect so that it looks like empty background using
    painter \a p. \a rect is in widget coordinates, ready to be fed to
    \a p.

    The default function fills \a rect with the
    viewport()->backgroundBrush().
*/

void QListView::paintEmptyArea( QPainter * p, const QRect & rect )
{
    QStyleOption opt( d->sortcolumn, 0 ); // ### hack; in 3.1, add a property in QListView and QHeader
    QStyle::SFlags how = QStyle::Style_Default;
    if ( isEnabled() )
	how |= QStyle::Style_Enabled;

    style().drawComplexControl( QStyle::CC_ListView,
				p, this, rect, colorGroup(),
				how, QStyle::SC_ListView, QStyle::SC_None,
				opt );
}


/*
    Rebuilds the list of drawable QListViewItems. This function is
    const so that const functions can call it without requiring
    d->drawables to be mutable.
*/

void QListView::buildDrawableList() const
{
    d->r->enforceSortOrder();

    QPtrStack<QListViewPrivate::Pending> stack;
    stack.push( new QListViewPrivate::Pending( ((int)d->rootIsExpandable)-1,
					       0, d->r ) );

    // could mess with cy and ch in order to speed up vertical
    // scrolling
    int cy = contentsY();
    int ch = ((QListView *)this)->visibleHeight();
    d->topPixel = cy + ch; // one below bottom
    d->bottomPixel = cy - 1; // one above top

    QListViewPrivate::Pending * cur;

    // used to work around lack of support for mutable
    QPtrList<QListViewPrivate::DrawableItem> * dl;

    dl = new QPtrList<QListViewPrivate::DrawableItem>;
    dl->setAutoDelete( TRUE );
    if ( d->drawables )
	delete ((QListView *)this)->d->drawables;
    ((QListView *)this)->d->drawables = dl;

    while ( !stack.isEmpty() ) {
	cur = stack.pop();

	int ih = cur->i->height();
	int ith = cur->i->totalHeight();

	// if this is not true, buildDrawableList has been called recursivly
	Q_ASSERT( dl == d->drawables );

	// is this item, or its branch symbol, inside the viewport?
	if ( cur->y + ith >= cy && cur->y < cy + ch ) {
	    dl->append( new QListViewPrivate::DrawableItem(cur));
	    // perhaps adjust topPixel up to this item?  may be adjusted
	    // down again if any children are not to be painted
	    if ( cur->y < d->topPixel )
		d->topPixel = cur->y;
	    // bottompixel is easy: the bottom item drawn contains it
	    d->bottomPixel = cur->y + ih - 1;
	}

	// push younger sibling of cur on the stack?
	if ( cur->y + ith < cy+ch && cur->i->siblingItem )
	    stack.push( new QListViewPrivate::Pending(cur->l,
						      cur->y + ith,
						      cur->i->siblingItem));

	// do any children of cur need to be painted?
	if ( cur->i->isOpen() && cur->i->childCount() &&
	     cur->y + ith > cy &&
	     cur->y + ih < cy + ch ) {
	    cur->i->enforceSortOrder();

	    QListViewItem * c = cur->i->childItem;
	    int y = cur->y + ih;

	    // if any of the children are not to be painted, skip them
	    // and invalidate topPixel
	    while ( c && y + c->totalHeight() <= cy ) {
		y += c->totalHeight();
		c = c->siblingItem;
		d->topPixel = cy + ch;
	    }

	    // push one child on the stack, if there is at least one
	    // needing to be painted
	    if ( c && y < cy+ch )
		stack.push( new QListViewPrivate::Pending( cur->l + 1,
							   y, c ) );
	}

	delete cur;
    }
}

/*!
    \property QListView::treeStepSize
    \brief the number of pixels a child is offset from its parent

    The default is 20 pixels.

    Of course, this property is only meaningful for hierarchical list
    views.
*/

int QListView::treeStepSize() const
{
    return d->levelWidth;
}

void QListView::setTreeStepSize( int size )
{
    if ( size != d->levelWidth ) {
	d->levelWidth = size;
	viewport()->repaint( FALSE );
    }
}

/*!
    Inserts item \a i into the list view as a top-level item. You do
    not need to call this unless you've called takeItem(\a i) or
    QListViewItem::takeItem(\a i) and need to reinsert \a i elsewhere.

    \sa QListViewItem::takeItem() takeItem()
*/

void QListView::insertItem( QListViewItem * i )
{
    if ( d->r ) // not for d->r itself
	d->r->insertItem( i );
}


/*!
    Removes and deletes all the items in this list view and triggers
    an update.

    \sa triggerUpdate()
*/

void QListView::clear()
{
    bool wasUpdatesEnabled = viewport()->isUpdatesEnabled();
    viewport()->setUpdatesEnabled( FALSE );
    setContentsPos( 0, 0 );
    viewport()->setUpdatesEnabled( wasUpdatesEnabled );
    bool block = signalsBlocked();
    blockSignals( TRUE );
    d->clearing = TRUE;
    clearSelection();
    if ( d->iterators ) {
	QListViewItemIterator *i = d->iterators->first();
	while ( i ) {
	    i->curr = 0;
	    i = d->iterators->next();
	}
    }

    if ( d->drawables )
	d->drawables->clear();
    delete d->dirtyItems;
    d->dirtyItems = 0;
    d->dirtyItemTimer->stop();

    d->focusItem = 0;
    d->selectAnchor = 0;

    // if it's down its downness makes no sense, so undown it
    d->buttonDown = FALSE;

    QListViewItem *c = (QListViewItem *)d->r->firstChild();
    QListViewItem *n;
    while( c ) {
	n = (QListViewItem *)c->nextSibling();
	delete c;
	c = n;
    }
    resizeContents( d->h->sizeHint().width(), contentsHeight() );
    delete d->r;
    d->r = 0;
    QListViewPrivate::Root * r = new QListViewPrivate::Root( this );
    r->is_root = TRUE;
    d->r = r;
    d->r->setSelectable( FALSE );
    blockSignals( block );
    triggerUpdate();
    d->clearing = FALSE;
}

/*!
    \reimp
*/

void QListView::setContentsPos( int x, int y )
{
    updateGeometries();
    QScrollView::setContentsPos( x, y );
}

/*!
    Adds a \a width pixels wide column with the column header \a label
    to this QListView, and returns the index of the new column.

    All columns apart from the first one are inserted to the right of
    the existing ones.

    If \a width is negative, the new column's \l WidthMode is set to
    \c Maximum instead of \c Manual.

    \sa setColumnText() setColumnWidth() setColumnWidthMode()
*/
int QListView::addColumn( const QString &label, int width )
{
    int c = d->h->addLabel( label, width );
    d->column.resize( c+1 );
    d->column.insert( c, new QListViewPrivate::Column );
    d->column[c]->wmode = width >=0 ? Manual : Maximum;
    updateGeometries();
    updateGeometry();
    return c;
}

/*!
    \overload

    Adds a \a width pixels wide new column with the header \a label
    and \a iconset to this QListView, and returns the index of the
    column.

    If \a width is negative, the new column's \l WidthMode is set to
    \c Maximum, and to \c Manual otherwise.

    \sa setColumnText() setColumnWidth() setColumnWidthMode()
*/
int QListView::addColumn( const QIconSet& iconset, const QString &label, int width )
{
    int c = d->h->addLabel( iconset, label, width );
    d->column.resize( c+1 );
    d->column.insert( c, new QListViewPrivate::Column );
    d->column[c]->wmode = width >=0 ? Manual : Maximum;
    updateGeometries();
    updateGeometry();
    return c;
}

/*!
    \property QListView::columns
    \brief the number of columns in this list view

    \sa addColumn(), removeColumn()
*/

int QListView::columns() const
{
    return d->column.count();
}

/*!
    Removes the column at position \a index.
*/

void QListView::removeColumn( int index )
{
    if ( index < 0 || index > (int)d->column.count() - 1 )
	return;

    if ( d->vci ) {
	QListViewPrivate::ViewColumnInfo *vi = d->vci, *prev = 0, *next = 0;
	for ( int i = 0; i < index; ++i ) {
	    if ( vi ) {
		prev = vi;
		vi = vi->next;
	    }
	}
	if ( vi ) {
	    next = vi->next;
	    if ( prev )
		prev->next = next;
	    vi->next = 0;
	    delete vi;
	    if ( index == 0 )
		d->vci = next;
	}
    }

    QListViewItemIterator it( this );
    for ( ; it.current(); ++it ) {
	QListViewPrivate::ItemColumnInfo *ci = (QListViewPrivate::ItemColumnInfo*)it.current()->columns;
	if ( ci ) {
	    QListViewPrivate::ItemColumnInfo *prev = 0, *next = 0;
	    for ( int i = 0; i < index; ++i ) {
		if ( ci ) {
		    prev = ci;
		    ci = ci->next;
		}
	    }
	    if ( ci ) {
		next = ci->next;
		if ( prev )
		    prev->next = next;
		ci->next = 0;
		delete ci;
		if ( index == 0 )
		    it.current()->columns = next;
	    }
	}
    }

    for ( int i = index; i < (int)d->column.count() - 1; ++i ) {
	QListViewPrivate::Column *c = d->column.take( i );
	if ( i == index )
	    delete c;
	d->column.insert( i, d->column[ i + 1 ] );
    }
    d->column.take( d->column.size() - 1 );
    d->column.resize( d->column.size() - 1 );

    d->h->removeLabel( index );

    updateGeometries();
    if ( d->column.count() == 0 )
	clear();
    updateGeometry();
}

/*!
    Sets the heading of column \a column to \a label.

    \sa columnText()
*/
void QListView::setColumnText( int column, const QString &label )
{
    if ( column < d->h->count() ) {
	d->h->setLabel( column, label );
	updateGeometries();
	updateGeometry();
    }
}

/*!
    \overload

    Sets the heading of column \a column to \a iconset and \a label.

    \sa columnText()
*/
void QListView::setColumnText( int column, const QIconSet& iconset, const QString &label )
{
    if ( column < d->h->count() ) {
	d->h->setLabel( column, iconset, label );
	updateGeometries();
    }
}

/*!
    Sets the width of column \a column to \a w pixels. Note that if
    the column has a WidthMode other than Manual, this width setting
    may be subsequently overridden.

    \sa columnWidth()
*/
void QListView::setColumnWidth( int column, int w )
{
    if ( column < d->h->count() && d->h->sectionSize( column ) != w ) {
	d->h->resizeSection( column, w );
	viewport()->update();
    }
}


/*!
    Returns the text of column \a c.

    \sa setColumnText()
*/

QString QListView::columnText( int c ) const
{
    return d->h->label(c);
}

/*!
    Returns the width of column \a c.

    \sa setColumnWidth()
*/

int QListView::columnWidth( int c ) const
{
    int actual = d->h->mapToActual( c );
    return d->h->cellSize( actual );
}


/*!
    \enum QListView::WidthMode

    This enum type describes how the width of a column in the view
    changes.

    \value Manual the column width does not change automatically.

    \value Maximum  the column is automatically sized according to the
    widths of all items in the column. (Note: The column never shrinks
    in this case.) This means the column is always resized to the
    width of the item with the largest width in the column.

    \sa setColumnWidth() setColumnWidthMode() columnWidth()
*/


/*!
    Sets column \a{c}'s width mode to \a mode. The default depends on
    the original width argument to addColumn().

    \sa QListViewItem::width()
*/

void QListView::setColumnWidthMode( int c, WidthMode mode )
{
    if ( c < d->h->count() )
	 d->column[c]->wmode = mode;
}


/*!
    Returns the \c WidthMode for column \a c.

    \sa setColumnWidthMode()
*/

QListView::WidthMode QListView::columnWidthMode( int c ) const
{
    if ( c < d->h->count() )
	return d->column[c]->wmode;
    else
	return Manual;
}


/*!
    Sets column \a{column}'s alignment to \a align. The alignment is
    ultimately passed to QListViewItem::paintCell() for each item in
    the list view.

    \sa Qt::AlignmentFlags
*/

void QListView::setColumnAlignment( int column, int align )
{
    if ( column < 0 )
	return;
    if ( !d->vci )
	d->vci = new QListViewPrivate::ViewColumnInfo;
    QListViewPrivate::ViewColumnInfo * l = d->vci;
    while( column ) {
	if ( !l->next )
	    l->next = new QListViewPrivate::ViewColumnInfo;
	l = l->next;
	column--;
    }
    if ( l->align == align )
	return;
    l->align = align;
    triggerUpdate();
}


/*!
    Returns the alignment of column \a column. The default is \c
    AlignAuto.

    \sa Qt::AlignmentFlags
*/

int QListView::columnAlignment( int column ) const
{
    if ( column < 0 || !d->vci )
	return AlignAuto;
    QListViewPrivate::ViewColumnInfo * l = d->vci;
    while( column ) {
	if ( !l->next )
	    l->next = new QListViewPrivate::ViewColumnInfo;
	l = l->next;
	column--;
    }
    return l ? l->align : AlignAuto;
}



/*!
    \reimp
 */
void QListView::show()
{
    // Reimplemented to setx the correct background mode and viewed
    // area size.
    if ( !isVisible() ) {
	reconfigureItems();
	updateGeometries();
    }
    QScrollView::show();
}


/*!
    Updates the sizes of the viewport, header, scroll bars and so on.
    \warning Don't call this directly; call triggerUpdate() instead.
*/

void QListView::updateContents()
{
    if ( d->updateHeader )
	header()->adjustHeaderSize();
    d->updateHeader = FALSE;
    if ( !isVisible() ) {
	// Not in response to a setText/setPixmap any more.
	d->useDoubleBuffer = FALSE;

	return;
    }
    if ( d->drawables ) {
	delete d->drawables;
	d->drawables = 0;
    }
    viewport()->setUpdatesEnabled( FALSE );
    updateGeometries();
    viewport()->setUpdatesEnabled( TRUE );
    viewport()->repaint( FALSE );
    d->useDoubleBuffer = FALSE;
}


void QListView::updateGeometries()
{
    int th = d->r->totalHeight();
    int tw = d->h->headerWidth();
    if ( d->h->offset() &&
	 tw < d->h->offset() + d->h->width() )
	horizontalScrollBar()->setValue( tw - QListView::d->h->width() );
#if 0
    if ( QApplication::reverseLayout() && d->h->offset() != horizontalScrollBar()->value() )
	horizontalScrollBar()->setValue( d->h->offset() );
#endif
    verticalScrollBar()->raise();
    resizeContents( tw, th );
    if ( d->h->isHidden() ) {
	setMargins( 0, 0, 0, 0 );
    } else {
	QSize hs( d->h->sizeHint() );
	setMargins( 0, hs.height(), 0, 0 );
	d->h->setGeometry( viewport()->x(), viewport()->y()-hs.height(),
			   visibleWidth(), hs.height() );
    }
}


/*!
    Updates the display when the section \a section has changed size
    from the old size, \a os, to the new size, \a ns.
*/

void QListView::handleSizeChange( int section, int os, int ns )
{
    bool upe = viewport()->isUpdatesEnabled();
    viewport()->setUpdatesEnabled( FALSE );
    int sx = horizontalScrollBar()->value();
    bool sv = horizontalScrollBar()->isVisible();
    updateGeometries();
    bool fullRepaint = d->fullRepaintOnComlumnChange || sx != horizontalScrollBar()->value()
		       || sv != horizontalScrollBar()->isVisible();
    d->fullRepaintOnComlumnChange = FALSE;
    viewport()->setUpdatesEnabled( upe );

    if ( fullRepaint ) {
	viewport()->repaint( FALSE );
	return;
    }

    int actual = d->h->mapToActual( section );
    int dx = ns - os;
    int left = d->h->cellPos( actual ) - contentsX() + d->h->cellSize( actual );
    if ( dx > 0 )
	left -= dx;
    if ( left < visibleWidth() )
	viewport()->scroll( dx, 0, QRect( left, 0, visibleWidth() - left, visibleHeight() ) );
    viewport()->repaint( left - 4 - d->ellipsisWidth, 0, 4 + d->ellipsisWidth,
			 visibleHeight(), FALSE ); // border between the items and ellipses width

    // map auto to left for now. Need to fix this once we support
    // reverse layout on the listview.
    int align = columnAlignment( section );
    if ( align == AlignAuto ) align = AlignLeft;
    if ( align != AlignAuto && align != AlignLeft )
	viewport()->repaint( d->h->cellPos( actual ) - contentsX(), 0,
			     d->h->cellSize( actual ), visibleHeight() );

    if ( currentItem() && currentItem()->renameBox ) {
	QRect r = itemRect( currentItem() );
	r = QRect( viewportToContents( r.topLeft() ), r.size() );
	r.setLeft( header()->sectionPos( currentItem()->renameCol ) );
	r.setWidth( header()->sectionSize( currentItem()->renameCol ) - 1 );
	if ( currentItem()->renameCol == 0 )
	    r.setLeft( r.left() + itemMargin() + ( currentItem()->depth() +
						   ( rootIsDecorated() ? 1 : 0 ) ) * treeStepSize() - 1 );
	if ( currentItem()->pixmap( currentItem()->renameCol ) )
	    r.setLeft( r.left() + currentItem()->pixmap( currentItem()->renameCol )->width() );
	if ( r.x() - contentsX() < 0 )
	    r.setX( contentsX() );
	if ( r.width() > visibleWidth() )
	    r.setWidth( visibleWidth() );
	addChild( currentItem()->renameBox, r.x(), r.y() );
	currentItem()->renameBox->resize( r.size() );
    }
}


/*
    Very smart internal slot that repaints \e only the items that need
    to be repainted. Don't use this directly; call repaintItem()
    instead.
*/

void QListView::updateDirtyItems()
{
    if ( d->timer->isActive() || !d->dirtyItems )
	return;
    QRect ir;
    QPtrDictIterator<void> it( *(d->dirtyItems) );
    QListViewItem * i;
    while( (i = (QListViewItem *)(it.currentKey())) != 0 ) {
	++it;
	ir = ir.unite( itemRect(i) );
    }
    if ( !ir.isEmpty() )  {		      // rectangle to be repainted
	if ( ir.x() < 0 )
	    ir.moveBy( -ir.x(), 0 );
	viewport()->repaint( ir, FALSE );
    }
}


void QListView::makeVisible()
{
    if ( d->focusItem )
	ensureItemVisible( d->focusItem );
}


/*!
    Ensures that the header is correctly sized and positioned when the
    resize event \a e occurs.
*/

void QListView::resizeEvent( QResizeEvent *e )
{
    QScrollView::resizeEvent( e );
    d->fullRepaintOnComlumnChange = TRUE;
    d->h->resize( visibleWidth(), d->h->height() );
}

/*! \reimp */

void QListView::viewportResizeEvent( QResizeEvent *e )
{
    QScrollView::viewportResizeEvent( e );
    d->h->resize( visibleWidth(), d->h->height() );
    if ( resizeMode() != NoColumn && currentItem() && currentItem()->renameBox ) {
	QRect r = itemRect( currentItem() );
	r = QRect( viewportToContents( r.topLeft() ), r.size() );
	r.setLeft( header()->sectionPos( currentItem()->renameCol ) );
	r.setWidth( header()->sectionSize( currentItem()->renameCol ) - 1 );
	if ( currentItem()->renameCol == 0 )
	    r.setLeft( r.left() + itemMargin() + ( currentItem()->depth() +
						   ( rootIsDecorated() ? 1 : 0 ) ) * treeStepSize() - 1 );
	if ( currentItem()->pixmap( currentItem()->renameCol ) )
	    r.setLeft( r.left() + currentItem()->pixmap( currentItem()->renameCol )->width() );
	if ( r.x() - contentsX() < 0 )
	    r.setX( contentsX() );
	if ( r.width() > visibleWidth() )
	    r.setWidth( visibleWidth() );
	addChild( currentItem()->renameBox, r.x(), r.y() );
	currentItem()->renameBox->resize( r.size() );
    }
}

/*!
    Triggers a size, geometry and content update during the next
    iteration of the event loop. Ensures that there'll be just one
    update to avoid flicker.
*/

void QListView::triggerUpdate()
{
    if ( !isVisible() || !isUpdatesEnabled() ) {
	// Not in response to a setText/setPixmap any more.
	d->useDoubleBuffer = FALSE;

	return; // it will update when shown, or something.
    }

    d->timer->start( 0, TRUE );
}


/*!
    Redirects the event \a e relating to object \a o, for the viewport
    to mousePressEvent(), keyPressEvent() and friends.
*/

bool QListView::eventFilter( QObject * o, QEvent * e )
{
    if ( o == d->h &&
	 e->type() >= QEvent::MouseButtonPress &&
	 e->type() <= QEvent::MouseMove ) {
	QMouseEvent * me = (QMouseEvent *)e;
	QMouseEvent me2( me->type(),
			 QPoint( me->pos().x(),
				 me->pos().y() - d->h->height() ),
			 me->button(), me->state() );
	switch( me2.type() ) {
	case QEvent::MouseButtonDblClick:
	    if ( me2.button() == RightButton )
		return TRUE;
	    break;
	case QEvent::MouseMove:
	    if ( me2.state() & RightButton ) {
		viewportMouseMoveEvent( &me2 );
		return TRUE;
	    }
	    break;
	default:
	    break;
	}
    } else if ( o == viewport() ) {
	QFocusEvent * fe = (QFocusEvent *)e;

	switch( e->type() ) {
	case QEvent::FocusIn:
	    focusInEvent( fe );
	    return TRUE;
	case QEvent::FocusOut:
	    focusOutEvent( fe );
	    return TRUE;
	default:
	    // nothing
	    break;
	}
    } else if ( o->inherits( "QLineEdit" ) ) {
	if ( currentItem() && currentItem()->renameBox ) {
	    if ( e->type() == QEvent::KeyPress ) {
		QKeyEvent *ke = (QKeyEvent*)e;
		if ( ke->key() == Key_Return ||
		     ke->key() == Key_Enter ) {
		    currentItem()->okRename( currentItem()->renameCol );
		    return TRUE;
		} else if ( ke->key() == Key_Escape ) {
		    currentItem()->cancelRename( currentItem()->renameCol );
		    return TRUE;
		}
	    } else if ( e->type() == QEvent::FocusOut ) {
		if ( ( (QFocusEvent*)e )->reason() != QFocusEvent::Popup ) {
		    QCustomEvent *e = new QCustomEvent( 9999 );
		    QApplication::postEvent( o, e );
		    return TRUE;
		}
	    } else if ( e->type() == 9999 ) {
		if ( d->defRenameAction == Reject )
		    currentItem()->cancelRename( currentItem()->renameCol );
		else
		    currentItem()->okRename( currentItem()->renameCol );
		return TRUE;
	    }
	}
    }

    return QScrollView::eventFilter( o, e );
}


/*!
    Returns a pointer to the list view containing this item.
*/

QListView * QListViewItem::listView() const
{
    const QListViewItem* c = this;
    while ( c && !c->is_root )
	c = c->parentItem;
    if ( !c )
	return 0;
    return ((QListViewPrivate::Root*)c)->theListView();
}


/*!
    Returns the depth of this item.
*/
int QListViewItem::depth() const
{
    return parentItem ? parentItem->depth()+1 : -1; // -1 == the hidden root
}


/*!
    Returns a pointer to the item immediately above this item on the
    screen. This is usually the item's closest older sibling, but it
    may also be its parent or its next older sibling's youngest child,
    or something else if anyoftheabove->height() returns 0. Returns 0
    if there is no item immediately above this item.

    This function assumes that all parents of this item are open (i.e.
    that this item is visible, or can be made visible by scrolling).

    \sa itemBelow() QListView::itemRect()
*/

QListViewItem * QListViewItem::itemAbove()
{
    if ( !parentItem )
	return 0;

    QListViewItem * c = parentItem;
    if ( c->childItem != this ) {
	c = c->childItem;
	while( c && c->siblingItem != this )
	    c = c->siblingItem;
	if ( !c )
	    return 0;
	while( c->isOpen() && c->childItem ) {
	    c = c->childItem;
	    while( c->siblingItem )
		c = c->siblingItem;		// assign c's sibling to c
	}
    }
    if ( c && ( !c->height() || !c->isEnabled() ) )
	return c->itemAbove();
    return c;
}


/*!
    Returns a pointer to the item immediately below this item on the
    screen. This is usually the item's eldest child, but it may also
    be its next younger sibling, its parent's next younger sibling,
    grandparent's, etc., or something else if anyoftheabove->height()
    returns 0. Returns 0 if there is no item immediately below this
    item.

    This function assumes that all parents of this item are open (i.e.
    that this item is visible or can be made visible by scrolling).

    \sa itemAbove() QListView::itemRect()
*/

QListViewItem * QListViewItem::itemBelow()
{
    QListViewItem * c = 0;
    if ( isOpen() && childItem ) {
	c = childItem;
    } else if ( siblingItem ) {
	c = siblingItem;
    } else if ( parentItem ) {
	c = this;
	do {
	    c = c->parentItem;
	} while( c->parentItem && !c->siblingItem );
	if ( c )
	    c = c->siblingItem;
    }
    if ( c && ( !c->height() || !c->isEnabled() ) )
	return c->itemBelow();
    return c;
}


/*!
    \fn bool QListViewItem::isOpen () const

    Returns TRUE if this list view item has children \e and they are
    not explicitly hidden; otherwise returns FALSE.

    \sa setOpen()
*/

/*!
    Returns the first (top) child of this item, or 0 if this item has
    no children.

    Note that the children are not guaranteed to be sorted properly.
    QListView and QListViewItem try to postpone or avoid sorting to
    the greatest degree possible, in order to keep the user interface
    snappy.

    \sa nextSibling()
*/

QListViewItem* QListViewItem::firstChild() const
{
    enforceSortOrder();
    return childItem;
}


/*!
    Returns the parent of this item, or 0 if this item has no parent.

    \sa firstChild(), nextSibling()
*/

QListViewItem* QListViewItem::parent() const
{
    if ( !parentItem || parentItem->is_root ) return 0;
    return parentItem;
}


/*!
    \fn QListViewItem* QListViewItem::nextSibling() const

    Returns the sibling item below this item, or 0 if there is no
    sibling item after this item.

    Note that the siblings are not guaranteed to be sorted properly.
    QListView and QListViewItem try to postpone or avoid sorting to
    the greatest degree possible, in order to keep the user interface
    snappy.

    \sa firstChild()
*/

/*!
    \fn int QListViewItem::childCount () const

    Returns how many children this item has.
*/


/*!
    Returns the height of this item in pixels. This does not include
    the height of any children; totalHeight() returns that.
*/
int QListViewItem::height() const
{
    QListViewItem * that = (QListViewItem *)this;
    if ( !that->configured ) {
	that->configured = TRUE;
	that->setup(); // ### virtual non-const function called in const
    }

    return visible ? ownHeight : 0;
}

/*!
    Call this function when the value of width() may have changed for
    column \a c. Normally, you should call this if text(c) changes.
    Passing -1 for \a c indicates that all columns may have changed.
    For efficiency, you should do this if more than one call to
    widthChanged() is required.

    \sa width()
*/
void QListViewItem::widthChanged( int c ) const
{
    listView()->widthChanged( this, c );
}

/*!
    \fn void  QListView::dropped ( QDropEvent * e )

    This signal is emitted, when a drop event occurred onto the
    viewport (not onto an item).

    \a e provides all information about the drop.
*/

/*!
    \fn void QListView::selectionChanged()

    This signal is emitted whenever the set of selected items has
    changed (normally before the screen update). It is available both
    in \c Single selection and \c Multi selection mode but is most
    useful in \c Multi selection mode.

    \warning Do not delete any QListViewItem objects in slots
    connected to this signal.

    \sa setSelected() QListViewItem::setSelected()
*/


/*!
    \fn void QListView::pressed( QListViewItem *item )

    This signal is emitted whenever the user presses the mouse button
    in a list view. \a item is the pointer to the list view item on
    which the user pressed the mouse button, or 0 if the user didn't
    press the mouse on an item.

    \warning Do not delete any QListViewItem objects in slots
    connected to this signal.
*/

/*!
    \fn void QListView::pressed( QListViewItem *item, const QPoint &pnt, int c )

    \overload

    This signal is emitted whenever the user presses the mouse button
    in a list view. \a item is the pointer to the list view item on
    which the user pressed the mouse button, or 0 if the user didn't
    press the mouse on an item. \a pnt is the position of the mouse
    cursor, and \a c is the column where the mouse cursor was when the
    user pressed the mouse button.

    \warning Do not delete any QListViewItem objects in slots
    connected to this signal.
*/

/*!
    \fn void QListView::clicked( QListViewItem *item )

    This signal is emitted whenever the user clicks (mouse pressed \e
    and mouse released) in the list view. \a item is the pointer to
    the clicked list view item, or 0 if the user didn't click on an
    item.

    \warning Do not delete any QListViewItem objects in slots
    connected to this signal.
*/

/*!
    \fn void QListView::mouseButtonClicked(int button, QListViewItem * item, const QPoint & pos, int c)

    This signal is emitted whenever the user clicks (mouse pressed \e
    and mouse released) in the list view at position \a pos. \a button
    is the mouse button that the user pressed, \a item is the pointer
    to the clicked list view item or 0 if the user didn't click on an
    item. If \a item is not 0, \a c is the list view column into which
    the user pressed; if \a item is 0 \a{c}'s value is undefined.

    \warning Do not delete any QListViewItem objects in slots
    connected to this signal.
*/

/*!
    \fn void QListView::mouseButtonPressed(int button, QListViewItem * item, const QPoint & pos, int c)

    This signal is emitted whenever the user pressed the mouse button
    in the list view at position \a pos. \a button is the mouse button
    which the user pressed, \a item is the pointer to the pressed list
    view item or 0 if the user didn't press on an item. If \a item is
    not 0, \a c is the list view column into which the user pressed; if
    \a item is 0 \a{c}'s value is undefined.

    \warning Do not delete any QListViewItem objects in slots
    connected to this signal.
*/

/*!
    \fn void QListView::clicked( QListViewItem *item, const QPoint &pnt, int c )

    \overload

    This signal is emitted whenever the user clicks (mouse pressed \e
    and mouse released) in the list view. \a item is the pointer to
    the clicked list view item, or 0 if the user didn't click on an
    item. \a pnt is the position where the user has clicked. If \a
    item is not 0, \a c is the list view column into which the user
    pressed; if \a item is 0 \a{c}'s value is undefined.

    \warning Do not delete any QListViewItem objects in slots
    connected to this signal.
*/

/*!
    \fn void QListView::selectionChanged( QListViewItem * )

    \overload

    This signal is emitted whenever the selected item has changed in
    \c Single selection mode (normally after the screen update). The
    argument is the newly selected item.

    When in Multi selection mode, use the no argument overload of this
    signal.

    \warning Do not delete any QListViewItem objects in slots
    connected to this signal.

    \sa setSelected() QListViewItem::setSelected() currentChanged()
*/


/*!
    \fn void QListView::currentChanged( QListViewItem * )

    This signal is emitted whenever the current item has changed
    (normally after the screen update). The current item is the item
    responsible for indicating keyboard focus.

    The argument is the newly current item, or 0 if the change was to
    make no item current. This can happen, for example, if all items
    in the list view are deleted.

    \warning Do not delete any QListViewItem objects in slots
    connected to this signal.

    \sa setCurrentItem() currentItem()
*/


/*!
    \fn void QListView::expanded( QListViewItem *item )

    This signal is emitted when \a item has been expanded, i.e. when
    the children of \a item are shown.

    \sa setOpen() collapsed()
*/

/*!
    \fn void QListView::collapsed( QListViewItem *item )

    This signal is emitted when the \a item has been collapsed, i.e.
    when the children of \a item are hidden.

    \sa setOpen() expanded()
*/

/*!
    Processes the mouse press event \a e on behalf of the viewed widget.
*/
void QListView::contentsMousePressEvent( QMouseEvent * e )
{
    contentsMousePressEventEx( e );
}

void QListView::contentsMousePressEventEx( QMouseEvent * e )
{
    if ( !e )
	return;

    if ( !d->ignoreEditAfterFocus )
	d->startEdit = TRUE;
    d->ignoreEditAfterFocus = FALSE;

    if ( currentItem() && currentItem()->renameBox ) {
	d->startEdit = FALSE;
	if ( d->defRenameAction == Reject )
	    currentItem()->cancelRename( currentItem()->renameCol );
	else
	    currentItem()->okRename( currentItem()->renameCol );
    }

    d->startDragItem = 0;
    d->dragStartPos = e->pos();
    QPoint vp = contentsToViewport( e->pos() );

    d->ignoreDoubleClick = FALSE;
    d->buttonDown = TRUE;

    QListViewItem * i = itemAt( vp );
    d->pressedEmptyArea = e->y() > contentsHeight();
    if ( i && !i->isEnabled() )
	return;
    if ( d->startEdit && ( i != currentItem() || (i && !i->isSelected()) ) )
	d->startEdit = FALSE;
    QListViewItem *oldCurrent = currentItem();

    if ( e->button() == RightButton && (e->state() & ControlButton ) )
	goto emit_signals;

    if ( !i ) {
	if ( !( e->state() & ControlButton ) )
	    clearSelection();
	goto emit_signals;
    } else {
	// No new anchor when using shift
	if ( !(e->state() & ShiftButton) )
 	    d->selectAnchor = i;
    }

    if ( (i->isExpandable() || i->childCount()) &&
	 d->h->mapToLogical( d->h->cellAt( vp.x() ) ) == 0 ) {
	int x1 = vp.x() +
		 d->h->offset() -
		 d->h->cellPos( d->h->mapToActual( 0 ) );
	QPtrListIterator<QListViewPrivate::DrawableItem> it( *(d->drawables) );
	while( it.current() && it.current()->i != i )
	    ++it;

	if ( it.current() ) {
	    x1 -= treeStepSize() * (it.current()->l - 1);
	    QStyle::SubControl ctrl =
		style().querySubControl( QStyle::CC_ListView,
					 this, QPoint(x1, e->pos().y()),
					 QStyleOption(i) );
	    if( ctrl == QStyle::SC_ListViewExpand) {
		d->buttonDown = FALSE;
		if ( e->button() == LeftButton ) {
		    bool close = i->isOpen();
		    setOpen( i, !close );
		    // ### Looks dangerous, removed because of reentrance problems
		    // qApp->processEvents();
		    if ( !d->focusItem ) {
			d->focusItem = i;
			repaintItem( d->focusItem );
			emit currentChanged( d->focusItem );
		    }
		    if ( close ) {
			bool newCurrent = FALSE;
			QListViewItem *ci = d->focusItem;
			while ( ci ) {
			    if ( ci->parent() && ci->parent() == i ) {
				newCurrent = TRUE;
				break;
			    }
			    ci = ci->parent();
			}
			if ( newCurrent ) {
			    setCurrentItem( i );
			}
		    }
		}
		d->ignoreDoubleClick = TRUE;
		d->buttonDown = FALSE;
		goto emit_signals;
	    }
	}
    }

    d->select = d->selectionMode == Multi ? !i->isSelected() : TRUE;

    {// calculate activatedP
	activatedByClick = TRUE;
	QPoint topLeft = itemRect( i ).topLeft(); //### inefficient?
	activatedP = vp - topLeft;
	int xdepth = treeStepSize() * (i->depth() + (rootIsDecorated() ? 1 : 0))
		     + itemMargin();
	xdepth += d->h->sectionPos( d->h->mapToSection( 0 ) );
	activatedP.rx() -= xdepth;
    }
    i->activate();
    activatedByClick = FALSE;

    if ( i != d->focusItem )
	setCurrentItem( i );
    else
	repaintItem( i );

    d->pressedSelected = i && i->isSelected();

    if ( i->isSelectable() && selectionMode() != NoSelection ) {
	if ( selectionMode() == Single )
	    setSelected( i, TRUE );
	else if ( selectionMode() == Multi )
	    setSelected( i, d->select );
	else if ( selectionMode() == Extended ) {
	    bool changed = FALSE;
	    if ( !(e->state() & (ControlButton | ShiftButton)) ) {
		if ( !i->isSelected() || e->button() != RightButton ) {
		    bool blocked = signalsBlocked();
		    blockSignals( TRUE );
		    clearSelection();
		    blockSignals( blocked );
		    i->setSelected( TRUE );
		    changed = TRUE;
		}
	    } else {
		if ( e->state() & ShiftButton )
		    d->pressedSelected = FALSE;
		if ( (e->state() & ControlButton) && !(e->state() & ShiftButton) && i ) {
		    i->setSelected( !i->isSelected() );
		    changed = TRUE;
		    d->pressedSelected = FALSE;
		} else if ( !oldCurrent || !i || oldCurrent == i ) {
		    if ( (bool)i->selected != d->select ) {
			changed = TRUE;
			i->setSelected( d->select );
		    }
		// Shift pressed in Extended mode ---
		} else {
		    changed = selectRange( i, oldCurrent, d->selectAnchor );
		}
	    }
	    if ( changed ) {
		d->useDoubleBuffer = TRUE;
		triggerUpdate();
		emit selectionChanged();
	    }
	}
    }

 emit_signals:

    if ( i && vp.x() + contentsX() < itemMargin() + ( i->depth() + ( rootIsDecorated() ? 1 : 0 ) ) * treeStepSize() )
	i = 0;
    d->pressedItem = i;

    int c = i ? d->h->mapToLogical( d->h->cellAt( vp.x() ) ) : -1;
    if ( !i || ( i && i->isEnabled() ) ) {
	emit pressed( i );
	emit pressed( i, viewport()->mapToGlobal( vp ), d->h->mapToLogical( c ) );
    }
    emit mouseButtonPressed( e->button(), i, viewport()->mapToGlobal( vp ), c );

    if ( e->button() == RightButton && i == d->pressedItem ) {
	if ( !i && !(e->state() & ControlButton) )
	    clearSelection();

	emit rightButtonPressed( i, viewport()->mapToGlobal( vp ), c );
    }
}

/*!
    \reimp
*/

void QListView::contentsContextMenuEvent( QContextMenuEvent *e )
{
    if ( receivers( SIGNAL(contextMenuRequested(QListViewItem *, const QPoint &, int)) ) )
	e->accept();
    if ( e->reason() == QContextMenuEvent::Keyboard ) {
	QListViewItem *item = currentItem();
	if ( item ) {
	    QRect r = itemRect( item );
	    QPoint p = r.topLeft();
	    if ( allColumnsShowFocus() )
		p += QPoint( width() / 2, ( r.height() / 2 ) );
	    else
		p += QPoint( columnWidth( 0 ) / 2, ( r.height() / 2 ) );
	    p.rx() = QMAX( 0, p.x() );
	    p.rx() = QMIN( visibleWidth(), p.x() );
	    emit contextMenuRequested( item, viewport()->mapToGlobal( p ), -1 );
	}
    } else {
	QPoint vp = contentsToViewport( e->pos() );
	QListViewItem * i = itemAt( vp );
	int c = i ? d->h->mapToLogical( d->h->cellAt( vp.x() ) ) : -1;
	emit contextMenuRequested( i, viewport()->mapToGlobal( vp ), c );
    }
}

/*!
    Processes the mouse release event \a e on behalf of the viewed widget.
*/
void QListView::contentsMouseReleaseEvent( QMouseEvent * e )
{
    contentsMouseReleaseEventEx( e );
}

void QListView::contentsMouseReleaseEventEx( QMouseEvent * e )
{
    d->startDragItem = 0;
    bool emitClicked = !d->pressedItem || d->buttonDown;
    d->buttonDown = FALSE;
    // delete and disconnect autoscroll timer, if we have one
    if ( d->scrollTimer ) {
	disconnect( d->scrollTimer, SIGNAL(timeout()),
		    this, SLOT(doAutoScroll()) );
	d->scrollTimer->stop();
	delete d->scrollTimer;
	d->scrollTimer = 0;
    }

    if ( !e )
	return;

    if ( d->selectionMode == Extended &&
	 d->focusItem == d->pressedItem &&
	 d->pressedSelected && d->focusItem &&
	 e->button() == LeftButton) {
	bool block = signalsBlocked();
	blockSignals( TRUE );
	clearSelection();
	blockSignals( block );
	d->focusItem->setSelected( TRUE );
	emit selectionChanged();
    }

    QPoint vp = contentsToViewport(e->pos());
    QListViewItem *i = itemAt( vp );
    if ( i && !i->isEnabled() )
	return;
    if ( i == d->pressedItem && i && i->isSelected() && e->button() == LeftButton && d->startEdit ) {
	QRect r = itemRect( currentItem() );
	r = QRect( viewportToContents( r.topLeft() ), r.size() );
	d->pressedColumn = header()->sectionAt(  e->pos().x() );
	r.setLeft( header()->sectionPos( d->pressedColumn ) );
	r.setWidth( header()->sectionSize( d->pressedColumn ) - 1 );
	if ( d->pressedColumn == 0 )
	    r.setLeft( r.left() + itemMargin() + ( currentItem()->depth() +
						   ( rootIsDecorated() ? 1 : 0 ) ) * treeStepSize() - 1 );
	if ( r.contains( e->pos() ) &&
	     !( e->state() & ( ShiftButton | ControlButton ) ) )
	    d->renameTimer->start( QApplication::doubleClickInterval(), TRUE );
    }
    if ( i && vp.x() + contentsX() < itemMargin() + ( i->depth() + ( rootIsDecorated() ? 1 : 0 ) ) * treeStepSize() )
	i = 0;
    emitClicked = emitClicked && d->pressedItem == i;
    d->pressedItem = 0;

    if ( emitClicked ) {
	if ( !i || ( i && i->isEnabled() ) ) {
	    emit clicked( i );
	    emit clicked( i, viewport()->mapToGlobal( vp ), d->h->mapToLogical( d->h->cellAt( vp.x() ) ) );
	}
	emit mouseButtonClicked( e->button(), i, viewport()->mapToGlobal( vp ),
				 i ? d->h->mapToLogical( d->h->cellAt( vp.x() ) ) : -1 );

	if ( e->button() == RightButton ) {
	    if ( !i ) {
 		if ( !(e->state() & ControlButton) )
		    clearSelection();
		emit rightButtonClicked( 0, viewport()->mapToGlobal( vp ), -1 );
		return;
	    }

	    int c = d->h->mapToLogical( d->h->cellAt( vp.x() ) );
	    emit rightButtonClicked( i, viewport()->mapToGlobal( vp ), c );
	}
    }
}


/*!
    Processes the mouse double-click event \a e on behalf of the viewed widget.
*/
void QListView::contentsMouseDoubleClickEvent( QMouseEvent * e )
{
    d->renameTimer->stop();
    d->startEdit = FALSE;
    if ( !e || e->button() != LeftButton )
	return;

    // ensure that the following mouse moves and eventual release is
    // ignored.
    d->buttonDown = FALSE;

    if ( d->ignoreDoubleClick ) {
	d->ignoreDoubleClick = FALSE;
	return;
    }

    QPoint vp = contentsToViewport(e->pos());

    QListViewItem * i = itemAt( vp );

    if ( !i || !i->isEnabled() )
	return;

    if ( !i->isOpen() ) {
	if ( i->isExpandable() || i->childCount() )
	    setOpen( i, TRUE );
    } else {
	setOpen( i, FALSE );
    }

    emit doubleClicked( i );
}


/*!
    Processes the mouse move event \a e on behalf of the viewed widget.
*/
void QListView::contentsMouseMoveEvent( QMouseEvent * e )
{
    if ( !e )
	return;

    bool needAutoScroll = FALSE;

    QPoint vp = contentsToViewport(e->pos());

    QListViewItem * i = itemAt( vp );
    if ( i && !i->isEnabled() )
	return;
    if ( i != d->highlighted ) {
	if ( i ) {
	    emit onItem( i );
	} else {
	    emit onViewport();
	}
	d->highlighted = i;
    }

    if ( d->startDragItem )
	i = d->startDragItem;

    if ( !d->buttonDown ||
	 ( ( e->state() & LeftButton ) != LeftButton &&
	   ( e->state() & MidButton ) != MidButton &&
	   ( e->state() & RightButton ) != RightButton ) )
	return;

    if ( i && i == d->pressedItem &&
	 ( i->isSelected() || d->selectionMode == NoSelection ) &&
	 i->dragEnabled() ) {
	if ( !d->startDragItem ) {
	    setSelected( i, TRUE );
	    d->startDragItem = i;
	}
	if ( ( d->dragStartPos - e->pos() ).manhattanLength() > QApplication::startDragDistance() ) {
	    d->buttonDown = FALSE;
#ifndef QT_NO_DRAGANDDROP
	    startDrag();
#endif
	}
	return;
    }

    // check, if we need to scroll
    if ( vp.y() > visibleHeight() || vp.y() < 0 )
	needAutoScroll = TRUE;

    // if we need to scroll and no autoscroll timer is started,
    // connect the timer
    if ( needAutoScroll && !d->scrollTimer ) {
	d->scrollTimer = new QTimer( this );
	connect( d->scrollTimer, SIGNAL(timeout()),
		 this, SLOT(doAutoScroll()) );
	d->scrollTimer->start( 100, FALSE );
	// call it once manually
	doAutoScroll( vp );
    }

    // if we don't need to autoscroll
    if ( !needAutoScroll ) {
	// if there is a autoscroll timer, delete it
	if ( d->scrollTimer ) {
	    disconnect( d->scrollTimer, SIGNAL(timeout()),
			this, SLOT(doAutoScroll()) );
	    d->scrollTimer->stop();
	    delete d->scrollTimer;
	    d->scrollTimer = 0;
	}
	// call this to select an item ( using the pos from the event )
	doAutoScroll( vp );
    }
}


/*!
    This slot handles auto-scrolling when the mouse button is pressed
    and the mouse is outside the widget.
*/
void QListView::doAutoScroll()
{
    doAutoScroll( QPoint() );
}

/*
  Handles auto-scrolling when the mouse button is pressed
  and the mouse is outside the widget.

  If cursorPos is (0,0) (isNull == TRUE) it uses the current QCursor::pos, otherwise it uses cursorPos
*/
void QListView::doAutoScroll( const QPoint &cursorPos )
{
    QPoint pos = cursorPos.isNull() ? viewport()->mapFromGlobal( QCursor::pos() ) :  cursorPos;
    if ( !d->focusItem || ( d->pressedEmptyArea && pos.y() > contentsHeight() ) )
	return;

    bool down = pos.y() > itemRect( d->focusItem ).y();

    int g = pos.y() + contentsY();

    if ( down && pos.y() > height()  )
	g = height() + contentsY();
    else if ( pos.y() < 0 )
	g = contentsY();

    QListViewItem *c = d->focusItem, *old = 0;
    QListViewItem *oldCurrent = c;
    if ( down ) {
	int y = itemRect( d->focusItem ).y() + contentsY();
	while( c && y + c->height() <= g ) {
	    y += c->height();
	    old = c;
	    c = c->itemBelow();
	}
	if ( !c && old )
	    c = old;
    } else {
	int y = itemRect( d->focusItem ).y() + contentsY();
	while( c && y >= g ) {
	    old = c;
	    c = c->itemAbove();
	    if ( c )
		y -= c->height();
	}
	if ( !c && old )
	    c = old;
    }

    if ( !c || c == d->focusItem )
	return;

    if ( d->focusItem ) {
	if ( d->selectionMode == Multi ) {
	    // also (de)select the ones in between
	    QListViewItem * b = d->focusItem;
	    bool down = ( itemPos( c ) > itemPos( b ) );
	    while( b && b != c ) {
		if ( b->isSelectable() )
		    setSelected( b, d->select );
		b = down ? b->itemBelow() : b->itemAbove();
	    }
	    if ( c->isSelectable() )
		setSelected( c, d->select );
	} else if ( d->selectionMode == Extended ) {
	    if ( selectRange( c, oldCurrent, d->selectAnchor ) ) {
		d->useDoubleBuffer = TRUE;
		triggerUpdate();
		emit selectionChanged();
	    }
	}
    }

    setCurrentItem( c );
    d->visibleTimer->start( 1, TRUE );
}

/*!
    \reimp
*/

void QListView::focusInEvent( QFocusEvent *e )
{
    Q_UNUSED(e) // I need this to get rid of a Borland warning
    if ( d->focusItem )
	repaintItem( d->focusItem );
    else if ( firstChild() && e->reason() != QFocusEvent::Mouse ) {
	d->focusItem = firstChild();
	emit currentChanged( d->focusItem );
	repaintItem( d->focusItem );
    }
    if ( e->reason() == QFocusEvent::Mouse ) {
	d->ignoreEditAfterFocus = TRUE;
	d->startEdit = FALSE;
    }
    if ( style().styleHint( QStyle::SH_ItemView_ChangeHighlightOnFocus, this ) ) {
	bool db = d->useDoubleBuffer;
	d->useDoubleBuffer = TRUE;
	viewport()->repaint( FALSE );
	d->useDoubleBuffer = db;
    }

    QRect mfrect = itemRect( d->focusItem );
    if ( mfrect.isValid() ) {
	if ( header() && header()->isVisible() )
	    setMicroFocusHint( mfrect.x(), mfrect.y()+header()->height(), mfrect.width(), mfrect.height(), FALSE );
	else
	    setMicroFocusHint( mfrect.x(), mfrect.y(), mfrect.width(), mfrect.height(), FALSE );
    }
}


/*!
    \reimp
*/

void QListView::focusOutEvent( QFocusEvent *e )
{
    Q_UNUSED(e) // I need this to get rid of a Borland warning

    if ( e->reason() == QFocusEvent::Popup && d->buttonDown )
	d->buttonDown = FALSE;
    if ( style().styleHint( QStyle::SH_ItemView_ChangeHighlightOnFocus, this ) ) {
	if ( e->reason() != QFocusEvent::Popup ) {
	    bool db = d->useDoubleBuffer;
	    d->useDoubleBuffer = TRUE;
	    viewport()->repaint( FALSE );
	    d->useDoubleBuffer = db;
	}
    }

    if ( d->focusItem )
	repaintItem( d->focusItem );
}


/*!
    \reimp
*/

void QListView::keyPressEvent( QKeyEvent * e )
{
    if ( currentItem() && currentItem()->renameBox )
	return;
    if ( !e || !firstChild() ) {
	e->ignore();
	return; // subclass bug
    }

    QListViewItem* oldCurrent = currentItem();
    if ( !oldCurrent ) {
	setCurrentItem( firstChild() );
	if ( d->selectionMode == Single )
	    setSelected( firstChild(), TRUE );
	return;
    }

    QListViewItem * i = currentItem();
    QListViewItem *old = i;

    if ( ( d->selectionMode == Multi || d->selectionMode == Extended ) && i->isSelectable() && e->ascii() == ' ' ) {
	setSelected( i, !i->isSelected() );
	d->currentPrefix.truncate( 0 );
	return;
    }

    QRect r( itemRect( i ) );
    QListViewItem * i2;

    bool singleStep = FALSE;
    bool selectCurrent = TRUE;
    bool wasNavigation = TRUE;

    switch( e->key() ) {
    case Key_Backspace:
    case Key_Delete:
	d->currentPrefix.truncate( 0 );
	break;
    case Key_Enter:
    case Key_Return:
	d->currentPrefix.truncate( 0 );
	if ( i && !i->isSelectable() && i->isEnabled() &&
	     ( i->childCount() || i->isExpandable() || i->isOpen() ) ) {
	    i->setOpen( !i->isOpen() );
	    return;
	}
	e->ignore();
	if ( currentItem() && !currentItem()->isEnabled() )
	    break;
	emit returnPressed( currentItem() );
	// do NOT accept.  QDialog.
	return;
    case Key_Down:
	selectCurrent = FALSE;
	i = i->itemBelow();
	d->currentPrefix.truncate( 0 );
	singleStep = TRUE;
	break;
    case Key_Up:
	selectCurrent = FALSE;
	i = i->itemAbove();
	d->currentPrefix.truncate( 0 );
	singleStep = TRUE;
	break;
    case Key_Home:
	selectCurrent = FALSE;
	i = firstChild();
	d->currentPrefix.truncate( 0 );
	break;
    case Key_End:
	selectCurrent = FALSE;
	i = firstChild();
	while ( i->nextSibling() )
	    i = i->nextSibling();
	while ( i->itemBelow() )
	    i = i->itemBelow();
	d->currentPrefix.truncate( 0 );
	break;
    case Key_Next:
	selectCurrent = FALSE;
	i2 = itemAt( QPoint( 0, visibleHeight()-1 ) );
	if ( i2 == i || !r.isValid() ||
	     visibleHeight() <= itemRect( i ).bottom() ) {
	    if ( i2 )
		i = i2;
	    int left = visibleHeight();
	    while( (i2 = i->itemBelow()) != 0 && left > i2->height() ) {
		left -= i2->height();
		i = i2;
	    }
	} else {
	    if ( !i2 ) {
		// list is shorter than the view, goto last item
		while( (i2 = i->itemBelow()) != 0 )
		    i = i2;
	    } else {
		i = i2;
	    }
	}
	d->currentPrefix.truncate( 0 );
	break;
    case Key_Prior:
	selectCurrent = FALSE;
	i2 = itemAt( QPoint( 0, 0 ) );
	if ( i == i2 || !r.isValid() || r.top() <= 0 ) {
	    if ( i2 )
		i = i2;
	    int left = visibleHeight();
	    while( (i2 = i->itemAbove()) != 0 && left > i2->height() ) {
		left -= i2->height();
		i = i2;
	    }
	} else {
	    i = i2;
	}
	d->currentPrefix.truncate( 0 );
	break;
    case Key_Plus:
	d->currentPrefix.truncate( 0 );
	if (  !i->isOpen() && (i->isExpandable() || i->childCount()) )
	    setOpen( i, TRUE );
	else
	    return;
	break;
    case Key_Right:
	d->currentPrefix.truncate( 0 );
	if ( i->isOpen() && i->childItem ) {
	    i = i->childItem;
	} else if ( !i->isOpen() && (i->isExpandable() || i->childCount()) ) {
	    setOpen( i, TRUE );
	} else if ( contentsX() + visibleWidth() < contentsWidth() ) {
	    horizontalScrollBar()->addLine();
	    return;
	} else {
	    return;
	}
	break;
    case Key_Minus:
	d->currentPrefix.truncate( 0 );
	if ( i->isOpen() )
	    setOpen( i, FALSE );
	else
	    return;
	break;
    case Key_Left:
	d->currentPrefix.truncate( 0 );
	if ( i->isOpen() ) {
	    setOpen( i, FALSE );
	} else if ( i->parentItem && i->parentItem != d->r ) {
	    i = i->parentItem;
	} else if ( contentsX() ) {
	    horizontalScrollBar()->subtractLine();
	    return;
	} else {
	    return;
	}
	break;
    case Key_Space:
	activatedByClick = FALSE;
	i->activate();
	d->currentPrefix.truncate( 0 );
	if ( currentItem() && !currentItem()->isEnabled() )
	    break;
	emit spacePressed( currentItem() );
	break;
    case Key_Escape:
	e->ignore(); // For QDialog
	return;
    case Key_F2:
	if ( currentItem() && currentItem()->renameEnabled( 0 ) )
	    currentItem()->startRename( 0 );
    default:
	if ( e->text().length() > 0 && e->text()[ 0 ].isPrint() ) {
	    selectCurrent = FALSE;
	    wasNavigation = FALSE;
	    QString input( d->currentPrefix );
	    QListViewItem * keyItem = i;
	    QTime now( QTime::currentTime() );
	    bool tryFirst = TRUE;
	    while( keyItem ) {
		// try twice, first with the previous string and this char
		if ( d->currentPrefixTime.msecsTo( now ) <= 400 )
		    input = input + e->text().lower();
		else
		    input = e->text().lower();
		if ( input.length() == e->text().length() ) {
		    if ( keyItem->itemBelow() ) {
			keyItem = keyItem->itemBelow();
			tryFirst = TRUE;
		    } else {
			keyItem = firstChild();
			tryFirst = FALSE;
		    }
		}
		QString keyItemKey;
		QString prefix;
		while( keyItem ) {
		    // Look for text in column 0, then left-to-right
		    keyItemKey = keyItem->text(0);
		    for (int col = 0; col < d->h->count() && !keyItemKey; col++ )
			keyItemKey = keyItem->text( d->h->mapToLogical(col) );
		    if ( !keyItemKey.isEmpty() ) {
			prefix = keyItemKey;
			prefix.truncate( input.length() );
			prefix = prefix.lower();
			if ( prefix == input ) {
			    d->currentPrefix = input;
			    d->currentPrefixTime = now;
			    i = keyItem;
				// nonoptimal double-break...
			    keyItem = 0;
			    input.truncate( 0 );
			    tryFirst = FALSE;
			}
		    }
		    if ( keyItem )
			keyItem = keyItem->itemBelow();
		    if ( !keyItem && tryFirst ) {
			keyItem = firstChild();
			tryFirst = FALSE;
		    }
		}
		// then, if appropriate, with just this character
		if ( input.length() > e->text().length() ) {
		    input.truncate(0);
		    keyItem = i;
		}
	    }
	} else {
	    d->currentPrefix.truncate( 0 );
	    if ( e->state() & ControlButton ) {
		d->currentPrefix = QString::null;
		switch ( e->key() ) {
		case Key_A:
		    selectAll( TRUE );
		    break;
		}
	    }
	    e->ignore();
	    return;
	}
    }

    if ( !i )
	return;

    if ( !( e->state() & ShiftButton ) || !d->selectAnchor )
	d->selectAnchor = i;

    setCurrentItem( i );
    if ( i->isSelectable() )
	handleItemChange( old, wasNavigation && (e->state() & ShiftButton),
			  wasNavigation && (e->state() & ControlButton) );

    if ( d->focusItem && !d->focusItem->isSelected() && d->selectionMode == Single && selectCurrent )
	setSelected( d->focusItem, TRUE );

    if ( singleStep )
	d->visibleTimer->start( 1, TRUE );
    else
	ensureItemVisible( i );
}


/*!
    Returns a pointer to the QListViewItem at \a viewPos. Note that \a
    viewPos is in the coordinate system of viewport(), not in the list
    view's own, much larger, coordinate system.

    itemAt() returns 0 if there is no such item.

    Note that you also get the pointer to the item if \a viewPos
    points to the root decoration (see setRootIsDecorated()) of the
    item. To check whether or not \a viewPos is on the root decoration
    of the item, you can do something like this:

    \code
    QListViewItem *i = itemAt( p );
    if ( i ) {
	if ( p.x() > header()->cellPos( header()->mapToActual( 0 ) ) +
		treeStepSize() * ( i->depth() + ( rootIsDecorated() ? 1 : 0) ) + itemMargin() ||
		p.x() < header()->cellPos( header()->mapToActual( 0 ) ) ) {
	    ; // p is not on root decoration
	else
	    ; // p is on the root decoration
    }
    \endcode

    This might be interesting if you use this function to find out
    where the user clicked and if you want to start a drag (which you
    do not want to do if the user clicked onto the root decoration of
    an item).

    \sa itemPos() itemRect()
*/

QListViewItem * QListView::itemAt( const QPoint & viewPos ) const
{
    if ( viewPos.x() > contentsWidth() - contentsX() )
	return 0;

    if ( !d->drawables || d->drawables->isEmpty() )
	buildDrawableList();

    QListViewPrivate::DrawableItem * c = d->drawables->first();
    int g = viewPos.y() + contentsY();

    while( c && c->i && ( c->y + c->i->height() <= g ||
			  !c->i->isVisible() ||
			  c->i->parent() && !c->i->parent()->isVisible() ) )
	c = d->drawables->next();

    QListViewItem *i = (c && c->y <= g) ? c->i : 0;
    return i;
}


/*!
    Returns the y-coordinate of \a item in the list view's coordinate
    system. This function is normally much slower than itemAt() but it
    works for all items, whereas itemAt() normally works only for
    items on the screen.

    This is a thin wrapper around QListViewItem::itemPos().

    \sa itemAt() itemRect()
*/

int QListView::itemPos( const QListViewItem * item )
{
    return item ? item->itemPos() : 0;
}


/*! \obsolete
    \property QListView::multiSelection
    \brief whether the list view is in multi-selection or extended-selection mode

    If you enable multi-selection, \c Multi, mode, it is possible to
    specify whether or not this mode should be extended. \c Extended
    means that the user can select multiple items only when pressing
    the Shift or Ctrl key at the same time.

    The default selection mode is \c Single.

    \sa selectionMode()
*/

void QListView::setMultiSelection( bool enable )
{
    if ( !enable )
	d->selectionMode = QListView::Single;
    else if (  d->selectionMode != Multi && d->selectionMode != Extended )
	d->selectionMode = QListView::Multi;
}

bool QListView::isMultiSelection() const
{
    return d->selectionMode == QListView::Extended || d->selectionMode == QListView::Multi;
}

/*!
    \property QListView::selectionMode
    \brief the list view's selection mode

    The mode can be \c Single (the default), \c Extended, \c Multi or
    \c NoSelection.

    \sa multiSelection
*/

void QListView::setSelectionMode( SelectionMode mode )
{
    if ( d->selectionMode == mode )
	return;

    if ( ( d->selectionMode == Multi || d->selectionMode == Extended ) &&
	 ( mode == QListView::Single || mode == QListView::NoSelection ) ){
	clearSelection();
	if ( ( mode == QListView::Single ) && currentItem() )
	    currentItem()->selected = TRUE;
    }

    d->selectionMode = mode;
}

QListView::SelectionMode QListView::selectionMode() const
{
    return d->selectionMode;
}


/*!
    If \a selected is TRUE the \a item is selected; otherwise it is
    unselected.

    If the list view is in \c Single selection mode and \a selected is
    TRUE, the currently selected item is unselected and \a item is
    made current. Unlike QListViewItem::setSelected(), this function
    updates the list view as necessary and emits the
    selectionChanged() signals.

    \sa isSelected() setMultiSelection() isMultiSelection()
    setCurrentItem()
*/

void QListView::setSelected( QListViewItem * item, bool selected )
{
    if ( !item || item->isSelected() == selected ||
	 !item->isSelectable() || selectionMode() == NoSelection )
	return;

    bool emitHighlighted = FALSE;
    if ( selectionMode() == Single && d->focusItem != item ) {
	QListViewItem *o = d->focusItem;
	if ( d->focusItem && d->focusItem->selected )
	    d->focusItem->setSelected( FALSE );
	d->focusItem = item;
	if ( o )
	    repaintItem( o );
	emitHighlighted = TRUE;
    }

    item->setSelected( selected );

    repaintItem( item );

    if ( d->selectionMode == Single && selected )
	emit selectionChanged( item );
    emit selectionChanged();

    if ( emitHighlighted )
	emit currentChanged( d->focusItem );
}


/*!
    Sets all items to be not selected, updates the list view as
    necessary and emits the selectionChanged() signals. Note that for
    \c Multi selection list views this function needs to iterate over
    \e all items.

    \sa setSelected(), setMultiSelection()
*/

void QListView::clearSelection()
{
    selectAll( FALSE );
}

/*!
    If \a select is TRUE, all items get selected; otherwise all items
    get unselected. This works only in the selection modes \c Multi
    and \c Extended. In \c Single and \c NoSelection mode the
    selection of the current item is just set to \a select.
*/

void QListView::selectAll( bool select )
{
    if ( d->selectionMode == Multi || d->selectionMode == Extended ) {
	bool b = signalsBlocked();
	blockSignals( TRUE );
	bool anything = FALSE;
	QListViewItemIterator it( this );
	while ( it.current() ) {
	    QListViewItem *i = it.current();
	    if ( (bool)i->selected != select ) {
		i->setSelected( select );
		anything = TRUE;
	    }
	    ++it;
	}
	blockSignals( b );
	if ( anything ) {
	    emit selectionChanged();
	    d->useDoubleBuffer = TRUE;
	    triggerUpdate();
	}
    } else if ( d->focusItem ) {
	QListViewItem * i = d->focusItem;
	setSelected( i, select );
    }
}

/*!
    Inverts the selection. Only works in \c Multi and \c Extended
    selection modes.
*/

void QListView::invertSelection()
{
    if ( d->selectionMode == Single ||
	 d->selectionMode == NoSelection )
	return;

    bool b = signalsBlocked();
    blockSignals( TRUE );
    QListViewItemIterator it( this );
    for ( ; it.current(); ++it )
	it.current()->setSelected( !it.current()->isSelected() );
    blockSignals( b );
    emit selectionChanged();
    triggerUpdate();
}


/*!
    Returns TRUE if the list view item \a i is selected; otherwise
    returns FALSE.

    \sa QListViewItem::isSelected()
*/

bool QListView::isSelected( const QListViewItem * i ) const
{
    return i ? i->isSelected() : FALSE;
}


/*!
    Returns a pointer to the selected item if the list view is in
    \c Single selection mode and an item is selected.

    If no items are selected or the list view is in \c Multi selection
    mode this function returns 0.

    \sa setSelected() setMultiSelection()
*/

QListViewItem * QListView::selectedItem() const
{
    if ( d->selectionMode != Single )
	return 0;
    if ( d->focusItem && d->focusItem->isSelected() )
	return d->focusItem;
    return 0;
}


/*!
    Sets item \a i to be the current highlighted item and repaints
    appropriately. This highlighted item is used for keyboard
    navigation and focus indication; it doesn't mean anything else,
    i.e. it is different from selection.

    \sa currentItem() setSelected()
*/

void QListView::setCurrentItem( QListViewItem * i )
{
    if ( !i || d->focusItem == i || !i->isEnabled() )
	return;

    if ( currentItem() && currentItem()->renameBox ) {
	if ( d->defRenameAction == Reject )
	    currentItem()->cancelRename( currentItem()->renameCol );
	else
	    currentItem()->okRename( currentItem()->renameCol );
    }

    QListViewItem * prev = d->focusItem;
    d->focusItem = i;

    QRect mfrect = itemRect( i );
    if ( mfrect.isValid() ) {
	if ( header() && header()->isVisible() )
	    setMicroFocusHint( mfrect.x(), mfrect.y()+header()->height(), mfrect.width(), mfrect.height(), FALSE );
	else
	    setMicroFocusHint( mfrect.x(), mfrect.y(), mfrect.width(), mfrect.height(), FALSE );
    }

    if ( i != prev) {
	if ( i && d->selectionMode == Single ) {
	    bool changed = FALSE;
	    if ( prev && prev->selected ) {
		changed = TRUE;
		prev->setSelected( FALSE );
	    }
	    if ( i && !i->selected && d->selectionMode != NoSelection && i->isSelectable() ) {
		i->setSelected( TRUE );
		changed = TRUE;
		emit selectionChanged( i );
	    }
	    if ( changed )
		emit selectionChanged();
	}

	if ( i )
	    repaintItem( i );
	if ( prev )
	    repaintItem( prev );
	emit currentChanged( i );
    }
}


/*!
    Returns a pointer to the currently highlighted item, or 0 if there
    isn't one.

    \sa setCurrentItem()
*/

QListViewItem * QListView::currentItem() const
{
    return d ? d->focusItem : 0;
}


/*!
    Returns the rectangle on the screen that item \a i occupies in
    viewport()'s coordinates, or an invalid rectangle if \a i is 0 or
    is not currently visible.

    The rectangle returned does not include any children of the
    rectangle (i.e. it uses QListViewItem::height(), rather than
    QListViewItem::totalHeight()). If you want the rectangle to
    include children you can use something like this:

    \code
    QRect r( listView->itemRect( item ) );
    r.setHeight( (QCOORD)(QMIN( item->totalHeight(),
				listView->viewport->height() - r.y() ) ) )
    \endcode

    Note the way it avoids too-high rectangles. totalHeight() can be
    much larger than the window system's coordinate system allows.

    itemRect() is comparatively slow. It's best to call it only for
    items that are probably on-screen.
*/

QRect QListView::itemRect( const QListViewItem * i ) const
{
    if ( !d->drawables || d->drawables->isEmpty() )
	buildDrawableList();

    QListViewPrivate::DrawableItem * c = d->drawables->first();

    while( c && c->i && c->i != i )
	c = d->drawables->next();

    if ( c && c->i == i ) {
	int y = c->y - contentsY();
	if ( y + c->i->height() >= 0 &&
	     y < ((QListView *)this)->visibleHeight() ) {
	    QRect r( -contentsX(), y, d->h->width(), i->height() );
	    return r;
	}
    }

    return QRect( 0, 0, -1, -1 );
}


/*!
    \fn void QListView::doubleClicked( QListViewItem *item )

    This signal is emitted whenever an item is double-clicked. It's
    emitted on the second button press, not the second button release.
    \a item is the list view item on which the user did the
    double-click.
*/


/*!
    \fn void QListView::returnPressed( QListViewItem * )

    This signal is emitted when Enter or Return is pressed. The
    argument is the currentItem().
*/

/*!
    \fn void QListView::spacePressed( QListViewItem * )

    This signal is emitted when Space is pressed. The argument is
    currentItem().
*/


/*!
    Sets the list view to be sorted by \a column and in ascending
    order if \a ascending is TRUE or descending order if it is FALSE.

    If \a column is -1, sorting is disabled and the user cannot sort
    columns by clicking on the column headers. If \a column is larger
    than the number of columns the user must click on a column
    header to sort the list view.
*/

void QListView::setSorting( int column, bool ascending )
{
    if ( column == -1 )
	column = Unsorted;

    if ( d->sortcolumn == column && d->ascending == ascending )
	return;

    d->ascending = ascending;
    d->sortcolumn = column;
    if ( d->sortcolumn != Unsorted && d->sortIndicator )
	d->h->setSortIndicator( d->sortcolumn, d->ascending );
    else
	d->h->setSortIndicator( -1 );

    triggerUpdate();
}


/*!
    Sets the \a column the list view is sorted by.

    Sorting is triggered by choosing a header section.
*/

void QListView::changeSortColumn( int column )
{
    if ( d->sortcolumn != Unsorted ) {
	int lcol = d->h->mapToLogical( column );
	setSorting( lcol, d->sortcolumn == lcol ? !d->ascending : TRUE);
    }
}

/*! Returns the column by which the list view is sorted, or
    -1 if sorting is disabled. */

int QListView::sortColumn() const
{
    return d->sortcolumn;
}


/*!
    (Re)sorts the list view using the last sorting configuration (sort
    column and ascending/descending).
*/

void QListView::sort()
{
    if ( d->r )
	d->r->sort();
}

/*!
    \property QListView::itemMargin
    \brief the advisory item margin that list items may use

    The item margin defaults to one pixel and is the margin between
    the item's edges and the area where it draws its contents.
    QListViewItem::paintFocus() draws in the margin.

    \sa QListViewItem::paintCell()
*/

void QListView::setItemMargin( int m )
{
    if ( d->margin == m )
	return;
    d->margin = m;
    if ( isVisible() ) {
	if ( d->drawables )
	    d->drawables->clear();
	triggerUpdate();
    }
}

int QListView::itemMargin() const
{
    return d->margin;
}


/*!
    \fn void QListView::rightButtonClicked( QListViewItem *, const QPoint&, int )

    This signal is emitted when the right button is clicked (i.e. when
    it's released). The arguments are the relevant QListViewItem (may
    be 0), the point in global coordinates and the relevant column (or
    -1 if the click was outside the list).
*/


/*!
    \fn void QListView::rightButtonPressed (QListViewItem *, const QPoint &, int)

    This signal is emitted when the right button is pressed. The
    arguments are the relevant QListViewItem (may be 0), the point in
    global coordinates and the relevant column (or -1 if the click was
    outside the list).
*/

/*!
    \fn void QListView::contextMenuRequested( QListViewItem *item, const QPoint & pos, int col )

    This signal is emitted when the user invokes a context menu with
    the right mouse button or with special system keys, with \a item
    being the item under the mouse cursor or the current item if no
    item is under the mouse cursor.

    \a pos is the position for the context menu in the global
    coordinate system.

    \a col is the column on which the user pressed, or -1 if the
    signal was triggered by a key event.
*/

/*!
    \reimp
*/
void QListView::styleChange( QStyle& old )
{
    QScrollView::styleChange( old );
    reconfigureItems();
}


/*!
    \reimp
*/
void QListView::setFont( const QFont & f )
{
    QScrollView::setFont( f );
    reconfigureItems();
}


/*!
    \reimp
*/
void QListView::setPalette( const QPalette & p )
{
    QScrollView::setPalette( p );
    reconfigureItems();
}


/*!
    Ensures that setup() is called for all currently visible items,
    and that it will be called for currently invisible items as soon
    as their parents are opened.

    (A visible item, here, is an item whose parents are all open. The
    item may happen to be offscreen.)

    \sa QListViewItem::setup()
*/

void QListView::reconfigureItems()
{
    d->fontMetricsHeight = fontMetrics().height();
    d->minLeftBearing = fontMetrics().minLeftBearing();
    d->minRightBearing = fontMetrics().minRightBearing();
    d->ellipsisWidth = fontMetrics().width( "..." ) * 2;
    d->r->setOpen( FALSE );
    d->r->configured = FALSE;
    d->r->setOpen( TRUE );
}

/*!
    Ensures the width mode of column \a c is updated according to the
    width of \a item.
*/

void QListView::widthChanged( const QListViewItem* item, int c )
{
    if ( c >= d->h->count() )
	return;


    QFontMetrics fm = fontMetrics();
    int col = c < 0 ? 0 : c;
    while ( col == c || ( c < 0 && col < d->h->count() ) ) {
	if ( d->column[col]->wmode == Maximum ) {
	    int w = item->width( fm, this, col );
	    if ( showSortIndicator() ) {
		QString title = header()->label( col );
		int tw = fm.width( title );
		tw += 40;
		w = QMAX( w, tw );
	    }
	    if ( col == 0 ) {
		int indent = treeStepSize() * item->depth();
		if ( rootIsDecorated() )
		    indent += treeStepSize();
		w += indent;
	    }
	    if ( w > columnWidth( col ) && !d->h->isStretchEnabled() && !d->h->isStretchEnabled( col ) ) {
		d->updateHeader = TRUE;
		setColumnWidth( col, w );
	    }
	}
	col++;
    }
}

/*!
    \property QListView::allColumnsShowFocus
    \brief whether items should show keyboard focus using all columns

    If this property is TRUE all columns will show focus and selection
    states, otherwise only column 0 will show focus.

    The default is FALSE.

    Setting this to TRUE if it's not necessary may cause noticeable
    flicker.
*/

void QListView::setAllColumnsShowFocus( bool enable )
{
    d->allColumnsShowFocus = enable;
}

bool QListView::allColumnsShowFocus() const
{
    return d->allColumnsShowFocus;
}


/*!
    Returns the first item in this QListView. You can use its \link
    QListViewItem::firstChild() firstChild() \endlink and \link
    QListViewItem::nextSibling() nextSibling() \endlink functions to
    traverse the entire tree of items.

    Returns 0 if there is no first item.

    \sa itemAt() QListViewItem::itemBelow() QListViewItem::itemAbove()
*/

QListViewItem * QListView::firstChild() const
{
    if ( !d->r )
	return 0;

    d->r->enforceSortOrder();
    return d->r->childItem;
}

/*!
    Returns the last item in the list view tree.

    Returns 0 if there are no items in the QListView.

    This function is slow because it traverses the entire tree to find
    the last item.
*/

QListViewItem* QListView::lastItem() const
{
    QListViewItem* item = firstChild();
    if ( item ) {
	while ( item->nextSibling() || item->firstChild() ) {
	    if ( item->nextSibling() )
		item = item->nextSibling();
	    else
		item = item->firstChild();
	}
    }
    return item;
}

/*!
    Repaints this item on the screen if it is currently visible.
*/

void QListViewItem::repaint() const
{
    listView()->repaintItem( this );
}


/*!
    Repaints \a item on the screen if \a item is currently visible.
    Takes care to avoid multiple repaints.
*/

void QListView::repaintItem( const QListViewItem * item ) const
{
    if ( !item )
	return;
    d->dirtyItemTimer->start( 0, TRUE );
    if ( !d->dirtyItems )
	d->dirtyItems = new QPtrDict<void>();
    d->dirtyItems->replace( (void *)item, (void *)item );
}



/*!
    \class QCheckListItem
    \brief The QCheckListItem class provides checkable list view items.

    \ingroup advanced

    QCheckListItems are used in \l{QListView}s to provide
    \l{QListViewItem}s that are checkboxes, radio buttons or
    controllers.

    Checkbox and controller check list items may be inserted at any
    level in a list view. Radio button check list items must be
    children of a controller check list item.

    The item can be checked or unchecked with setOn(). Its type can be
    retrieved with type() and its text retrieved with text().

    \img qlistviewitems.png List View Items

    \sa QListViewItem QListView
*/

// ### obscenity is warranted.

/*!
    \enum QCheckListItem::Type

    This enum type specifies a QCheckListItem's type:

    \value RadioButton
    \value CheckBox
    \value Controller
*/

/*!
    Constructs a checkable item with parent \a parent, text \a text
    and type \a tt. Note that a \c RadioButton must be the child of a
    \c Controller, otherwise it will not toggle.
*/
QCheckListItem::QCheckListItem( QCheckListItem *parent, const QString &text,
				Type tt )
    : QListViewItem( parent, text, QString::null )
{
    myType = tt;
    init();
    if ( myType == RadioButton ) {
	if ( parent->type() != Controller )
	    qWarning( "QCheckListItem::QCheckListItem(), radio button must be "
		     "child of a controller" );
	else
	    exclusive = parent;
    }
}

/*!
    Constructs a checkable item with parent \a parent, which is after \a after in the parent's list of children,
    text \a text and type \a tt. . Note that a \c RadioButton must be the child of a
    \c Controller, otherwise it will not toggle.
*/
QCheckListItem::QCheckListItem( QCheckListItem *parent, QListViewItem *after,
 				const QString &text, Type tt )
    : QListViewItem( parent, after, text )
{
    myType = tt;
    init();
    if ( myType == RadioButton ) {
 	if ( parent->type() != Controller )
 	    qWarning( "QCheckListItem::QCheckListItem(), radio button must be "
		      "child of a controller" );
 	else
 	    exclusive = parent;
    }
}

/*!
    Constructs a checkable item with parent \a parent, text \a text
    and type \a tt. Note that this item must \e not be a \c RadioButton.
    Radio buttons must be children of a \c Controller.
*/
QCheckListItem::QCheckListItem( QListViewItem *parent, const QString &text,
				Type tt )
    : QListViewItem( parent, text, QString::null )
{
    myType = tt;
    if ( myType == RadioButton ) {
      qWarning( "QCheckListItem::QCheckListItem(), radio button must be "
	       "child of a QCheckListItem" );
    }
    init();
}

/*!
    Constructs a checkable item with parent \a parent, which is after \a after in the parent's list of children,
    text \a text and type \a tt. Note that this item must \e not be a \c RadioButton.
    Radio buttons must be children of a \c Controller.
*/
QCheckListItem::QCheckListItem( QListViewItem *parent, QListViewItem *after,
 				const QString &text, Type tt )
    : QListViewItem( parent, after, text )
{
    myType = tt;
    if ( myType == RadioButton ) {
 	qWarning( "QCheckListItem::QCheckListItem(), radio button must be "
 		  "child of a QCheckListItem" );
    }
    init();
}


/*!
    Constructs a checkable item with parent \a parent, text \a text
    and type \a tt. Note that \a tt must \e not be \c RadioButton. Radio
    buttons must be children of a \c Controller.
*/
QCheckListItem::QCheckListItem( QListView *parent, const QString &text,
				Type tt )
    : QListViewItem( parent, text )
{
    myType = tt;
    if ( tt == RadioButton )
	qWarning( "QCheckListItem::QCheckListItem(), radio button must be "
		 "child of a QCheckListItem" );
    init();
}

/*!
    Constructs a checkable item with parent \a parent, which is after \a after in the parent's list of children,
    text \a text and type \a tt. Note that \a tt must \e not be \c RadioButton. Radio
    buttons must be children of a \c Controller.
*/
QCheckListItem::QCheckListItem( QListView *parent, QListViewItem *after,
 				const QString &text, Type tt )
    : QListViewItem( parent, after, text )
{
    myType = tt;
    if ( tt == RadioButton )
 	qWarning( "QCheckListItem::QCheckListItem(), radio button must be "
 		  "child of a QCheckListItem" );
    init();
}


int QCheckListItem::RTTI = 1;

/* \reimp */

int QCheckListItem::rtti() const
{
    return RTTI;
}

/*!
    Constructs a \c Controller item with parent \a parent, text \a
    text and pixmap \a p.
*/
QCheckListItem::QCheckListItem( QListView *parent, const QString &text,
				const QPixmap & p )
    : QListViewItem( parent, text )
{
    myType = Controller;
    setPixmap( 0, p );
    init();
}

/*!
    Constructs a \c Controller item with parent \a parent, text \a text
    and pixmap \a p.
*/
QCheckListItem::QCheckListItem( QListViewItem *parent, const QString &text,
				const QPixmap & p )
    : QListViewItem( parent, text )
{
    myType = Controller;
    setPixmap( 0, p );
    init();
}

void QCheckListItem::init()
{
    on = FALSE;
    exclusive = 0;
}

/*!
    Destroys the item, deleting all its children, freeing up all
    allocated resources.
*/
QCheckListItem::~QCheckListItem()
{
    if ( myType == RadioButton && exclusive && exclusive->exclusive == this )
	exclusive->turnOffChild();
    exclusive = 0; // so the children won't try to access us.
}

/*!
    \fn QCheckListItem::Type QCheckListItem::type() const

    Returns the type of this item.
*/

/*!
    \fn  bool QCheckListItem::isOn() const

    Returns TRUE if the item is toggled on; otherwise returns FALSE.
*/


/*!
    \fn QString QCheckListItem::text() const

    Returns the text of the item.
*/


/*!
    If this is a \c Controller that has \c RadioButton children, turn
    off the child that is on.
*/
void QCheckListItem::turnOffChild()
{
    if ( myType == Controller && exclusive )
	exclusive->setOn( FALSE );
}

/*!
    Toggle check box or set radio button to on.
*/
void QCheckListItem::activate()
{
    QListView * lv = listView();

    if ( lv && !lv->isEnabled() || !isEnabled() )
	return;

    QPoint pos;
    int boxsize = lv->style().pixelMetric(QStyle::PM_CheckListButtonSize, lv);
    if ( activatedPos( pos ) ) {
	bool parentControl = FALSE;
	if ( parent() && parent()->rtti() == 1  &&
	    ((QCheckListItem*) parent())->type() == Controller )
	    parentControl = TRUE;

	int x = parentControl ? 0 : 3;
	int align = lv->columnAlignment( 0 );
	int marg = lv->itemMargin();
	int y = 0;

	if ( align & AlignVCenter )
	    y = ( ( height() - boxsize ) / 2 ) + marg;
	else
	    y = (lv->fontMetrics().height() + 2 + marg - boxsize) / 2;

	QRect r( x, y, boxsize-3, boxsize-3 );
	// columns might have been swapped
	r.moveBy( lv->header()->sectionPos( 0 ), 0 );
	if ( !r.contains( pos ) )
	    return;
    }
    if ( myType == CheckBox ) {
	setOn( !on );
	ignoreDoubleClick();
    } else if ( myType == RadioButton ) {
	setOn( TRUE );
	ignoreDoubleClick();
    }
}

/*!
    Sets the button on if \a b is TRUE, otherwise sets it off.
    Maintains radio button exclusivity.
*/
void QCheckListItem::setOn( bool b  )
{
    if ( b == on )
	return;
    if ( myType == CheckBox ) {
	on = b;
	stateChange( b );
    } else if ( myType == RadioButton ) {
	if ( b ) {
	    if ( exclusive && exclusive->exclusive != this )
		exclusive->turnOffChild();
	    on = TRUE;
	    if ( exclusive )
		exclusive->exclusive = this;
	} else {
	    if ( exclusive && exclusive->exclusive == this )
		exclusive->exclusive = 0;
	    on = FALSE;
	}
	stateChange( b );
    }
    repaint();
}


/*!
    This virtual function is called when the item changes its on/off
    state.
*/
void QCheckListItem::stateChange( bool )
{
}

/*!
    \reimp
*/
void QCheckListItem::setup()
{
    QListViewItem::setup();
    int h = height();
    h = QMAX( listView()->style().pixelMetric(QStyle::PM_CheckListButtonSize, listView()),
	      h );
    h = QMAX( h, QApplication::globalStrut().height() );
    setHeight( h );
}

/*!
    \reimp
*/

int QCheckListItem::width( const QFontMetrics& fm, const QListView* lv, int column) const
{
    int r = QListViewItem::width( fm, lv, column );
    if ( column == 0 ) {
	r += lv->itemMargin();
	if ( myType == Controller && pixmap( 0 ) ) {
	    //	     r += 0;
	} else {
	    r +=  lv->style().pixelMetric(QStyle::PM_CheckListButtonSize, lv) + 4;
	}
    }
    return QMAX( r, QApplication::globalStrut().width() );
}

/*!
    Paints the item using the painter \a p and the color group \a cg.
    The item is in column \a column, has width \a width and has
    alignment \a align. (See Qt::AlignmentFlags for valid alignments.)
*/
void QCheckListItem::paintCell( QPainter * p, const QColorGroup & cg,
			       int column, int width, int align )
{
    if ( !p )
	return;

    QListView *lv = listView();
    if ( !lv )
	return;

    const BackgroundMode bgmode = lv->viewport()->backgroundMode();
    const QColorGroup::ColorRole crole = QPalette::backgroundRoleFromMode( bgmode );
    if ( cg.brush( crole ) != lv->colorGroup().brush( crole ) )
	p->fillRect( 0, 0, width, height(), cg.brush( crole ) );
    else
	lv->paintEmptyArea( p, QRect( 0, 0, width, height() ) );

    if ( column != 0 ) {
	// The rest is text, or for subclasses to change.
	QListViewItem::paintCell( p, cg, column, width, align );
	return;
    }

    bool parentControl = FALSE;
    if ( parent() && parent()->rtti() == 1  &&
	 ((QCheckListItem*) parent())->type() == Controller )
	parentControl = TRUE;

    QFontMetrics fm( lv->fontMetrics() );
    const QPixmap * icon = pixmap( column );
    int boxsize = lv->style().pixelMetric(QStyle::PM_CheckListButtonSize, lv);
    int marg = lv->itemMargin();
    int r = marg;
    int iconWidth = 0;

    // Draw controller / checkbox / radiobutton ---------------------
    int styleflags = QStyle::Style_Default;
    if ( isOn() )
	styleflags |= QStyle::Style_On;
    else
	styleflags |= QStyle::Style_Off;
    if ( isSelected() )
	styleflags |= QStyle::Style_Selected;
    if ( isEnabled() && lv->isEnabled() )
	styleflags |= QStyle::Style_Enabled;

    if ( myType == Controller ) {
	int x = 0;
	if(!parentControl)
	    x += 3;
	if ( !pixmap( 0 ) ) {
	    lv->style().drawPrimitive(QStyle::PE_CheckListController, p,
				  QRect(x, 0, boxsize,
					fm.height() + 2 + marg),
				  cg, styleflags, QStyleOption(this));
	    r += boxsize + 4;
	}
    } else {
	Q_ASSERT( lv ); //###
	int x = 0;
	int y = 0;
	if ( !parentControl )
	    x += 3;
	if ( align & AlignVCenter )
	    y = ( ( height() - boxsize ) / 2 ) + marg;
	else
	    y = (fm.height() + 2 + marg - boxsize) / 2;

	if ( myType == CheckBox ) {
	    lv->style().drawPrimitive(QStyle::PE_CheckListIndicator, p,
				      QRect(x, y, boxsize,
					    fm.height() + 2 + marg),
				      cg, styleflags, QStyleOption(this));
	} else { //radio button look
	    lv->style().drawPrimitive(QStyle::PE_CheckListExclusiveIndicator,
					      p, QRect(x, y, boxsize,
						       fm.height() + 2 + marg),
					      cg, styleflags, QStyleOption(this));
	}
	r += boxsize + 4;
    }

    // Draw icon ----------------------------------------------------
    if ( icon ) {
        iconWidth = icon->width() + lv->itemMargin();
	int xo = r;
	// we default to AlignVCenter.
	int yo = ( height() - icon->height() ) / 2;

	// I guess we may as well always respect vertical alignment.
        if ( align & AlignBottom )
    	    yo = height() - icon->height();

	// respect horizontal alignment when there is no text for an item.
	if ( text(column).isEmpty() ) {
	    if ( align & AlignRight )
		xo = width - 2 * marg - iconWidth;
	    else if ( align & AlignHCenter )
		xo = ( width - iconWidth ) / 2;
	}
    }

    // Draw text ----------------------------------------------------
    p->translate( r, 0 );
    p->setPen( QPen( cg.text() ) );
    QListViewItem::paintCell( p, cg, column, width - r, align );
}

/*!
    Draws the focus rectangle \a r using the color group \a cg on the
    painter \a p.
*/
void QCheckListItem::paintFocus( QPainter *p, const QColorGroup & cg,
				 const QRect & r )
{
    bool intersect = TRUE;
    QListView *lv = listView();
    if ( lv && lv->header()->mapToActual( 0 ) != 0 ) {
	int xdepth = lv->treeStepSize() * ( depth() + ( lv->rootIsDecorated() ? 1 : 0) ) + lv->itemMargin();
	int p = lv->header()->cellPos( lv->header()->mapToActual( 0 ) );
	xdepth += p;
	intersect = r.intersects( QRect( p, r.y(), xdepth - p + 1, r.height() ) );
    }
    bool parentControl = FALSE;
    if ( parent() && parent()->rtti() == 1  &&
	 ((QCheckListItem*) parent())->type() == Controller )
	parentControl = TRUE;
    if ( myType != Controller && intersect &&
	 (lv->rootIsDecorated() || myType == RadioButton ||
	  (myType == CheckBox && parentControl) ) ) {
	QRect rect;
	int boxsize = lv->style().pixelMetric(QStyle::PM_CheckListButtonSize, lv);
	if ( lv->columnAlignment(0) == AlignCenter ) {
	    QFontMetrics fm( lv->font() );
	    int bx = (lv->columnWidth(0) - (boxsize + fm.width(text())))/2 + boxsize;
	    if ( bx < 0 ) bx = 0;
	    rect.setRect( r.x() + bx + 5, r.y(), r.width() - bx - 5,
			  r.height() );
	} else
	    rect.setRect( r.x() + boxsize + 5, r.y(), r.width() - boxsize - 5,
			  r.height() );
	QListViewItem::paintFocus(p, cg, rect);
    } else {
	QListViewItem::paintFocus(p, cg, r);
    }
}

/*!
    \reimp
*/
QSize QListView::sizeHint() const
{
    if ( cachedSizeHint().isValid() )
	return cachedSizeHint();

    constPolish();

    if ( !isVisible() && (!d->drawables || d->drawables->isEmpty()) )
	// force the column widths to sanity, if possible
	buildDrawableList();

    QSize s( d->h->sizeHint() );
    s.setWidth( s.width() + style().pixelMetric(QStyle::PM_ScrollBarExtent) );
    s += QSize(frameWidth()*2,frameWidth()*2);
    QListViewItem * l = d->r;
    while( l && !l->height() )
	l = l->childItem ? l->childItem : l->siblingItem;

    if ( l && l->height() )
	s.setHeight( s.height() + 10 * l->height() );
    else
	s.setHeight( s.height() + 140 );

    if ( s.width() > s.height() * 3 )
	s.setHeight( s.width() / 3 );
    else if ( s.width() *3 < s.height() )
	s.setHeight( s.width() * 3 );

    setCachedSizeHint( s );

    return s;
}


/*!
    \reimp
*/

QSize QListView::minimumSizeHint() const
{
    return QScrollView::minimumSizeHint();
}


/*!
    Sets \a item to be open if \a open is TRUE and \a item is
    expandable, and to be closed if \a open is FALSE. Repaints
    accordingly.

    \sa QListViewItem::setOpen() QListViewItem::setExpandable()
*/

void QListView::setOpen( QListViewItem * item, bool open )
{
    if ( !item ||
	item->isOpen() == open ||
	(open && !item->childCount() && !item->isExpandable()) )
	return;

    QListViewItem* nextParent = 0;
    if ( open && !(item->isOpen()) )
	nextParent = item->itemBelow();

    item->setOpen( open );

    if ( open ) {
	QListViewItem* lastChild;
	if ( !nextParent ) {
	    lastChild = item;
	    for ( int i = 0; i < item->childCount() && lastChild; ++i ) {
		lastChild = lastChild->itemBelow();
	    }
	} else {
	    lastChild = nextParent->itemAbove();
	}
	ensureItemVisible( lastChild );
	ensureItemVisible( item );
    }
    if ( d->drawables )
	d->drawables->clear();
    buildDrawableList();

    QListViewPrivate::DrawableItem * c = d->drawables->first();

    while( c && c->i && c->i != item )
	c = d->drawables->next();

    if ( c && c->i == item ) {
	d->dirtyItemTimer->start( 0, TRUE );
	if ( !d->dirtyItems )
	    d->dirtyItems = new QPtrDict<void>();
	while( c && c->i ) {
	    d->dirtyItems->insert( (void *)(c->i), (void *)(c->i) );
	    c = d->drawables->next();
	}
    }
}


/*!
    Identical to \a{item}->isOpen(). Provided for completeness.

    \sa setOpen()
*/

bool QListView::isOpen( const QListViewItem * item ) const
{
    return item->isOpen();
}


/*!
    \property QListView::rootIsDecorated
    \brief whether the list view shows open/close signs on root items

    Open/close signs are small <b>+</b> or <b>-</b> symbols in windows
    style, or arrows in Motif style. The default is FALSE.
*/

void QListView::setRootIsDecorated( bool enable )
{
    if ( enable != (bool)d->rootIsExpandable ) {
	d->rootIsExpandable = enable;
	if ( isVisible() )
	    triggerUpdate();
    }
}

bool QListView::rootIsDecorated() const
{
    return d->rootIsExpandable;
}


/*!
    Ensures that item \a i is made visible, scrolling the list view
    vertically as required and also opening (expanding) any parent
    items if this is necessary to show the item.

    \sa itemRect() QScrollView::ensureVisible()
*/

void QListView::ensureItemVisible( const QListViewItem * i )
{
    if ( !i )
	return;

    QListViewItem *parent = i->parent();
    while ( parent ) {
	if ( !parent->isOpen() )
	    parent->setOpen( TRUE );
	parent = parent->parent();
    }

    if ( d->r->maybeTotalHeight < 0 )
	updateGeometries();
    int y = itemPos( i );
    int h = i->height();
    if ( isVisible() && y + h > contentsY() + visibleHeight() )
	setContentsPos( contentsX(), y - visibleHeight() + h );
    else if ( !isVisible() || y < contentsY() )
	setContentsPos( contentsX(), y );
}


/*!
    \fn QString QCheckListItem::text( int n ) const

    \reimp
*/

/*!
    Returns a pointer to the QHeader object that manages this list
    view's columns. Please don't modify the header behind the list
    view's back.

    You may safely call QHeader::setClickEnabled(),
    QHeader::setResizeEnabled(), QHeader::setMovingEnabled() and all
    the const QHeader functions.
*/

QHeader * QListView::header() const
{
    return d->h;
}


/*!
    \property QListView::childCount
    \brief the number of parentless (top level) QListViewItem objects in this QListView

    Represents the current number of parentless (top level)
    QListViewItem objects in this QListView, like
    QListViewItem::childCount() returns the number of child items for
    a QListViewItem.

    \sa QListViewItem::childCount()
*/

int QListView::childCount() const
{
    if ( d->r )
	return d->r->childCount();
    return 0;
}


/*!
    Moves this item to just after \a olderSibling. \a olderSibling and
    this object must have the same parent.

    If you need to move an item in the hierarchy use takeItem() and
    insertItem().
*/

void QListViewItem::moveToJustAfter( QListViewItem * olderSibling )
{
    if ( parentItem && olderSibling &&
	 olderSibling->parentItem == parentItem && olderSibling != this ) {
	if ( parentItem->childItem == this ) {
	    parentItem->childItem = siblingItem;
	} else {
	    QListViewItem * i = parentItem->childItem;
	    while( i && i->siblingItem != this )
		i = i->siblingItem;
	    if ( i )
		i->siblingItem = siblingItem;
	}
	siblingItem = olderSibling->siblingItem;
	olderSibling->siblingItem = this;
	parentItem->lsc = Unsorted;
    }
}

/*!
    Moves this item after the item \a after. This means it will get
    the sibling exactly after the item \a after. To move an item in
    the hierarchy, use takeItem() and insertItem().
*/

void QListViewItem::moveItem( QListViewItem *after )
{
    if ( !after || after == this )
	return;
    if ( parent() != after->parent() ) {
	if ( parentItem )
	    parentItem->takeItem( this );
	if ( after->parentItem ) {
	    int tmpLsc = after->parentItem->lsc;
	    after->parentItem->insertItem( this );
	    after->parentItem->lsc = tmpLsc;
	}
    }
    moveToJustAfter( after );
    QListView *lv = listView();
    if ( lv )
	lv->triggerUpdate();
}

/*!
    Recursively sorts items, from the root to this item.
    (enforceSortOrder() won't work the other way around, as
    documented.)
*/
void QListViewItem::enforceSortOrderBackToRoot()
{
    if ( parentItem ) {
	parentItem->enforceSortOrderBackToRoot();
	parentItem->enforceSortOrder();
    }
}

/*!
    \reimp
*/
void QListView::showEvent( QShowEvent * )
{
    if ( d->drawables )
	d->drawables->clear();
    delete d->dirtyItems;
    d->dirtyItems = 0;
    d->dirtyItemTimer->stop();
    d->fullRepaintOnComlumnChange = TRUE;

    updateGeometries();
}


/*!
    Returns the y coordinate of this item in the list view's
    coordinate system. This function is normally much slower than
    QListView::itemAt(), but it works for all items whereas
    QListView::itemAt() normally only works for items on the screen.

    \sa QListView::itemAt() QListView::itemRect() QListView::itemPos()
*/

int QListViewItem::itemPos() const
{
    QPtrStack<QListViewItem> s;
    QListViewItem * i = (QListViewItem *)this;
    while( i ) {
	s.push( i );
	i = i->parentItem;
    }

    int a = 0;
    QListViewItem * p = 0;
    while( s.count() ) {
	i = s.pop();
	if ( p ) {
	    if ( !p->configured ) {
		p->configured = TRUE;
		p->setup(); // ### virtual non-const function called in const
	    }
	    a += p->height();
	    QListViewItem * s = p->firstChild();
	    while( s && s != i ) {
		a += s->totalHeight();
		s = s->nextSibling();
	    }
	}
	p = i;
    }
    return a;
}


/*!
  \fn void QListView::removeItem( QListViewItem * )
  \obsolete

  This function has been renamed takeItem().
*/

/*!
    Removes item \a i from the list view; \a i must be a top-level
    item. The warnings regarding QListViewItem::takeItem() apply to
    this function, too.

    \sa insertItem()
*/
void QListView::takeItem( QListViewItem * i )
{
    if ( d->r )
	d->r->takeItem( i );
}

#ifndef QT_NO_DRAGANDDROP

/*! \reimp */

void QListView::contentsDragEnterEvent( QDragEnterEvent *e )
{
    d->oldFocusItem = d->focusItem;
    QListViewItem *i = d->focusItem;
    d->focusItem = itemAt( contentsToViewport( e->pos() ) );
    if ( i )
	i->repaint();
    if ( d->focusItem ) {
	d->focusItem->dragEntered();
	d->focusItem->repaint();
    }
    if ( i && i->dropEnabled() && i->acceptDrop( e ) || acceptDrops() )
	e->accept();
    else
	e->ignore();
}

/*! \reimp */

void QListView::contentsDragMoveEvent( QDragMoveEvent *e )
{
    QListViewItem *i = d->focusItem;
    d->focusItem = itemAt( contentsToViewport( e->pos() ) );
    if ( i ) {
	if ( i != d->focusItem )
	    i->dragLeft();
	i->repaint();
    }
    if ( d->focusItem ) {
	if ( i != d->focusItem )
	    d->focusItem->dragEntered();
	d->focusItem->repaint();
    }
    if ( i && i->dropEnabled() && i->acceptDrop( e ) || acceptDrops() )
	e->accept();
    else
	e->ignore();
}

/*! \reimp */

void QListView::contentsDragLeaveEvent( QDragLeaveEvent * )
{
    if ( d->focusItem )
	d->focusItem->dragLeft();

    setCurrentItem( d->oldFocusItem );
    d->oldFocusItem = 0;
}

/*! \reimp */

void QListView::contentsDropEvent( QDropEvent *e )
{
    setCurrentItem( d->oldFocusItem );
    QListViewItem *i = itemAt( contentsToViewport( e->pos() ) );
    if ( i && i->dropEnabled() && i->acceptDrop( e ) ) {
	i->dropped( e );
	emit dropped( e );
	e->accept();
    } else if ( acceptDrops() ) {
	emit dropped( e );
	e->accept();
    }
}

/*!
    If the user presses the mouse on an item and starts moving the
    mouse, and the item allow dragging (see
    QListViewItem::setDragEnabled()), this function is called to get a
    drag object and a drag is started unless dragObject() returns 0.

    By default this function returns 0. You should reimplement it and
    create a QDragObject depending on the selected items.
*/

QDragObject *QListView::dragObject()
{
    return 0;
}

/*!
    Starts a drag.
*/

void QListView::startDrag()
{
    if ( !d->startDragItem )
	return;

    d->startDragItem = 0;
    d->buttonDown = FALSE;

    QDragObject *drag = dragObject();
    if ( !drag )
	return;

    drag->drag();
}

#endif // QT_NO_DRAGANDDROP

/*!
    \property QListView::defaultRenameAction
    \brief whether the list view accepts the rename operation by default

    If this property is \c Accept, and the user renames an item and
    the editor loses focus (without the user pressing Enter), the
    item will still be renamed. If the property's value is \c Reject,
    the item will not be renamed unless the user presses Enter. The
    default is \c Reject.
*/

void QListView::setDefaultRenameAction( RenameAction a )
{
    d->defRenameAction = a;
}

QListView::RenameAction QListView::defaultRenameAction() const
{
    return d->defRenameAction;
}

/*!
    Returns TRUE if an item is being renamed; otherwise returns FALSE.
*/

bool QListView::isRenaming() const
{
    return currentItem() && currentItem()->renameBox;
}

/**********************************************************************
 *
 * Class QListViewItemIterator
 *
 **********************************************************************/


/*!
    \class QListViewItemIterator
    \brief The QListViewItemIterator class provides an iterator for collections of QListViewItems.

    \ingroup advanced

    Construct an instance of a QListViewItemIterator, with either a
    QListView* or a QListViewItem* as argument, to operate on the tree
    of QListViewItems.

    A QListViewItemIterator iterates over all the items in a list
    view. This means that it always makes the first child of the
    current item the new current item. If there is no child, the next
    sibling becomes the new current item; and if there is no next
    sibling, the next sibling of the parent becomes current.

    The following example creates a list of all the items that have
    been selected by the user, storing pointers to the items in a
    QPtrList:
    \code
    QPtrList<QListViewItem> lst;
    QListViewItemIterator it( myListView );
    while ( it.current() ) {
	if ( it.current()->isSelected() )
	    lst.append( it.current() );
	++it;
    }
    \endcode

    A QListViewItemIterator provides a convenient and easy way to
    traverse a hierarchical QListView.

    Multiple QListViewItemIterators can operate on the tree of
    QListViewItems. A QListView knows about all iterators operating on
    its QListViewItems. So when a QListViewItem gets removed all
    iterators that point to this item are updated and point to the
    following item if possible, otherwise to a valid item before the
    current one or to 0. Note however that deleting the parent item of
    an item that an iterator points to is not safe.

    \sa QListView, QListViewItem
*/

/*!
    Constructs an empty iterator.
*/

QListViewItemIterator::QListViewItemIterator()
    : curr( 0 ), listView( 0 )
{
}

/*!
    Constructs an iterator for the QListView that contains the \a
    item. The current iterator item is set to point to the \a item.
*/

QListViewItemIterator::QListViewItemIterator( QListViewItem *item )
    : curr( item ), listView( 0 )
{
    if ( item ) {
	item->enforceSortOrderBackToRoot();
	listView = item->listView();
    }
    addToListView();
}

/*!
    Constructs an iterator for the same QListView as \a it. The
    current iterator item is set to point on the current item of \a
    it.
*/

QListViewItemIterator::QListViewItemIterator( const QListViewItemIterator& it )
    : curr( it.curr ), listView( it.listView )
{
    addToListView();
}

/*!
    Constructs an iterator for the QListView \a lv. The current
    iterator item is set to point on the first child (QListViewItem)
    of \a lv.
*/

QListViewItemIterator::QListViewItemIterator( QListView *lv )
    : curr( lv->firstChild() ), listView( lv )
{
    addToListView();
}

/*!
    Assignment. Makes a copy of \a it and returns a reference to its
    iterator.
*/

QListViewItemIterator &QListViewItemIterator::operator=( const QListViewItemIterator &it )
{
    if ( listView ) {
	if ( listView->d->iterators->removeRef( this ) ) {
	    if ( listView->d->iterators->count() == 0 ) {
		delete listView->d->iterators;
		listView->d->iterators = 0;
	    }
	}
    }

    listView = it.listView;
    addToListView();
    curr = it.curr;

    return *this;
}

/*!
    Destroys the iterator.
*/

QListViewItemIterator::~QListViewItemIterator()
{
    if ( listView ) {
	if ( listView->d->iterators->removeRef( this ) ) {
	    if ( listView->d->iterators->count() == 0 ) {
		delete listView->d->iterators;
		listView->d->iterators = 0;
	    }
	}
    }
}

/*!
    Prefix ++. Makes the next item the new current item and returns
    it. Returns 0 if the current item is the last item or the
    QListView is 0.
*/

QListViewItemIterator &QListViewItemIterator::operator++()
{
    if ( !curr )
	return *this;

    QListViewItem *item = curr->firstChild();
    if ( !item ) {
	while ( (item = curr->nextSibling()) == 0 ) {
	    curr = curr->parent();
	    if ( curr == 0 )
		break;
	}
    }
    curr = item;
    return *this;
}

/*!
    \overload

    Postfix ++. Makes the next item the new current item and returns
    the item that \e was the current item.
*/

const QListViewItemIterator QListViewItemIterator::operator++( int )
{
    QListViewItemIterator oldValue = *this;
    ++( *this );
    return oldValue;
}

/*!
    Sets the current item to the item \a j positions after the current
    item. If that item is beyond the last item, the current item is
    set to 0. Returns the current item.
*/

QListViewItemIterator &QListViewItemIterator::operator+=( int j )
{
    while ( curr && j-- )
	++( *this );

    return *this;
}

/*!
    Prefix --. Makes the previous item the new current item and
    returns it. Returns 0 if the current item is the first item or the
    QListView is 0.
*/

QListViewItemIterator &QListViewItemIterator::operator--()
{
    if ( !curr )
	return *this;

    if ( !curr->parent() ) {
	// we are in the first depth
       if ( curr->listView() ) {
	    if ( curr->listView()->firstChild() != curr ) {
		// go the previous sibling
		QListViewItem *i = curr->listView()->firstChild();
		while ( i && i->siblingItem != curr )
		    i = i->siblingItem;

		curr = i;

		if ( i && i->firstChild() ) {
		    // go to the last child of this item
		    QListViewItemIterator it( curr->firstChild() );
		    for ( ; it.current() && it.current()->parent(); ++it )
			curr = it.current();
		}

		return *this;
	    } else {
		//we are already the first child of the list view, so it's over
		curr = 0;
		return *this;
	    }
	} else
	    return *this;
    } else {
	QListViewItem *parent = curr->parent();

	if ( curr != parent->firstChild() ) {
	    // go to the previous sibling
	    QListViewItem *i = parent->firstChild();
	    while ( i && i->siblingItem != curr )
		i = i->siblingItem;

	    curr = i;

	    if ( i && i->firstChild() ) {
		// go to the last child of this item
		QListViewItemIterator it( curr->firstChild() );
		for ( ; it.current() && it.current()->parent() != parent; ++it )
		    curr = it.current();
	    }

	    return *this;
	} else {
	    // make our parent the current item
	    curr = parent;
	    return *this;
	}
    }
}

/*!
    \overload

    Postfix --. Makes the previous item the new current item and
    returns the item that \e was the current item.
*/

const QListViewItemIterator QListViewItemIterator::operator--( int )
{
    QListViewItemIterator oldValue = *this;
    --( *this );
    return oldValue;
}

/*!
    Sets the current item to the item \a j positions before the
    current item. If that item is before the first item, the current
    item is set to 0. Returns the current item.
*/

QListViewItemIterator &QListViewItemIterator::operator-=( int j )
{
    while ( curr && j-- )
	--( *this );

    return *this;
}

/*!
    Dereference operator. Returns a reference to the current item. The
    same as current().
*/

QListViewItem* QListViewItemIterator::operator*()
{
    return curr;
}

/*!
    Returns iterator's current item.
*/

QListViewItem *QListViewItemIterator::current() const
{
    return curr;
}

/*!
    Adds this iterator to its QListView's list of iterators.
*/

void QListViewItemIterator::addToListView()
{
    if ( listView ) {
	if ( !listView->d->iterators ) {
	    listView->d->iterators = new QPtrList<QListViewItemIterator>;
	    Q_CHECK_PTR( listView->d->iterators );
	}
	listView->d->iterators->append( this );
    }
}

/*!
    This function is called to notify the iterator that the current
    item has been deleted, and sets the current item point to another
    (valid) item or 0.
*/

void QListViewItemIterator::currentRemoved()
{
    if ( !curr ) return;

    if ( curr->parent() )
	curr = curr->parent();
    else if ( curr->nextSibling() )
	curr = curr->nextSibling();
    else if ( listView && listView->firstChild() &&
	      listView->firstChild() != curr )
	curr = listView->firstChild();
    else
	curr = 0;
}

void QListView::handleItemChange( QListViewItem *old, bool shift, bool control )
{
    if ( d->selectionMode == Single ) {
	// nothing
    } else if ( d->selectionMode == Extended ) {
	if ( shift ) {
	    selectRange( d->selectAnchor ? d->selectAnchor : old,
			 d->focusItem, FALSE, TRUE, d->selectAnchor ? TRUE : FALSE );
	} else if ( !control ) {
	    bool block = signalsBlocked();
	    blockSignals( TRUE );
	    selectAll( FALSE );
	    blockSignals( block );
	    setSelected( d->focusItem, TRUE );
	}
    } else if ( d->selectionMode == Multi ) {
	if ( shift )
	    selectRange( old, d->focusItem, TRUE, FALSE );
    }
}

void QListView::startRename()
{
    if ( !currentItem() )
	return;
    currentItem()->startRename( d->pressedColumn );
    d->buttonDown = FALSE;
}

/* unselects items from to, including children, returns TRUE if any items were unselected */
bool QListView::clearRange( QListViewItem *from, QListViewItem *to, bool includeFirst )
{
    if ( !from || !to )
	return FALSE;

    // Swap
    if ( from->itemPos() > to->itemPos() ) {
	QListViewItem *temp = from;
	from = to;
	to = temp;
    }

    // Start on second?
    if ( !includeFirst ) {
	QListViewItem *below = (from == to) ? from : from->itemBelow();
	if ( below )
	    from = below;
    }

    // Clear items <from, to>
    bool changed = FALSE;

    QListViewItemIterator it( from );
    while ( it.current() ) {
	if ( it.current()->isSelected() ) {
	    it.current()->setSelected( FALSE );
	    changed = TRUE;
	}
	if ( it.current() == to )
	    break;
	++it;
    }

    // NOTE! This function does _not_ emit
    // any signals about selection changed
    return changed;
}

void QListView::selectRange( QListViewItem *from, QListViewItem *to, bool invert, bool includeFirst, bool clearSel )
{
    if ( !from || !to )
	return;
    bool swap = FALSE;
    if ( to == from->itemAbove() )
	swap = TRUE;
    if ( !swap && from != to && from != to->itemAbove() ) {
	QListViewItemIterator it( from );
	bool found = FALSE;
	for ( ; it.current(); ++it ) {
	    if ( it.current() == to ) {
		found = TRUE;
		break;
	    }
	}
	if ( !found )
	    swap = TRUE;
    }
    if ( swap ) {
	QListViewItem *i = from;
	from = to;
	to = i;
	if ( !includeFirst )
	    to = to->itemAbove();
    } else {
	if ( !includeFirst )
	    from = from->itemBelow();
    }

    bool changed = FALSE;
    if ( clearSel ) {
	QListViewItemIterator it( firstChild() );
	for ( ; it.current(); ++it ) {
	    if ( it.current()->selected ) {
		it.current()->setSelected( FALSE );
		changed = TRUE;
	    }
	}
	it = QListViewItemIterator( to );
	for ( ; it.current(); ++it ) {
	    if ( it.current()->selected ) {
		it.current()->setSelected( FALSE );
		changed = TRUE;
	    }
	}
    }

    for ( QListViewItem *i = from; i; i = i->itemBelow() ) {
	if ( !invert ) {
	    if ( !i->selected && i->isSelectable() ) {
		i->setSelected( TRUE );
		changed = TRUE;
	    }
	} else {
	    bool sel = !i->selected;
	    if ( (bool)i->selected != sel && sel && i->isSelectable() || !sel ) {
		i->setSelected( sel );
		changed = TRUE;
	    }
	}
	if ( i == to )
	    break;
    }
    if ( changed ) {
	d->useDoubleBuffer = TRUE;
	triggerUpdate();
	emit selectionChanged();
    }
}

/* clears selection from anchor to old, selects from anchor to new, does not emit selectionChanged on change */
bool QListView::selectRange( QListViewItem *newItem, QListViewItem *oldItem, QListViewItem *anchorItem )
{
    if ( !newItem || !oldItem || !anchorItem )
	return FALSE;

    int  anchorPos = anchorItem ? anchorItem->itemPos() : 0,
	 oldPos    = oldItem ? oldItem->itemPos() : 0,
	 newPos    = newItem->itemPos();
    QListViewItem *top=0, *bottom=0;
    if ( anchorPos > newPos ) {
	top = newItem;
	bottom = anchorItem;
    } else {
	top = anchorItem;
	bottom = newItem;
    }

    // removes the parts of the old selection that will no longer be selected
    bool changed = FALSE;
    int topPos    = top ? top->itemPos() : 0,
	bottomPos = bottom ? bottom->itemPos() : 0;
    if ( !(oldPos > topPos && oldPos < bottomPos) ) {
	if ( oldPos < topPos )
	    changed = clearRange( oldItem, top );
	else
	    changed = clearRange( bottom, oldItem );
    }

    // selects the new (not already selected) items
    QListViewItemIterator lit( top );
    for ( ; lit.current(); ++lit ) {
	if ( (bool)lit.current()->selected != d->select ) {
	    lit.current()->setSelected( d->select );
	    changed = TRUE;
	}
	// Include bottom, then break
	if ( lit.current() == bottom )
	    break;
    }

    return changed;
}


/*!
    Finds the first list view item in column \a column, that matches
    \a text and returns the item, or returns 0 of no such item could
    be found. Pass OR-ed together \l Qt::StringComparisonMode values
    in the \a compare flag, to control how the matching is performed.
    The default comparison mode is case-sensitive, exact match.
*/

QListViewItem *QListView::findItem( const QString& text, int column,
				    ComparisonFlags compare ) const
{
    if ( text.isEmpty() )
	return 0;

    if ( compare == CaseSensitive || compare == 0 )
	compare |= ExactMatch;

    QString itmtxt;
    QString comtxt = text;
    if ( !(compare & CaseSensitive) )
	comtxt = comtxt.lower();

    QListViewItemIterator it( d->focusItem );
    QListViewItem *sentinel = 0;
    QListViewItem *item;
    QListViewItem *beginsWithItem = 0;
    QListViewItem *endsWithItem = 0;
    QListViewItem *containsItem = 0;

    for ( int pass = 0; pass < 2; pass++ ) {
	while ( (item = it.current()) != sentinel ) {
	    itmtxt = item->text( column );
	    if ( !(compare & CaseSensitive) )
		itmtxt = itmtxt.lower();

	    if ( compare & ExactMatch && itmtxt == comtxt )
		return item;
	    if ( compare & BeginsWith && !beginsWithItem && itmtxt.startsWith( comtxt ) )
		beginsWithItem = containsItem = item;
	    if ( compare & EndsWith && !endsWithItem && itmtxt.endsWith( comtxt ) )
		endsWithItem = containsItem = item;
	    if ( compare & Contains && !containsItem && itmtxt.contains( comtxt ) )
		containsItem = item;
	    ++it;
	}

	if ( !d->focusItem )
	    break;
	it = QListViewItemIterator( firstChild() );
	sentinel = d->focusItem;
    }

    // Obey the priorities
    if ( beginsWithItem )
	return beginsWithItem;
    else if ( endsWithItem )
	return endsWithItem;
    else if ( containsItem )
	return containsItem;
    return 0;
}

/*! \reimp */
void QListView::windowActivationChange( bool oldActive )
{
    if ( oldActive && d->scrollTimer )
	d->scrollTimer->stop();

    if ( !isVisible() )
	return;

    if ( palette().active() != palette().inactive() )
	viewport()->update();
}

#endif // QT_NO_LISTVIEW
