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/*
kopetelistviewsearchline.cpp - a widget for performing quick searches on Kopete::ListViews
Based on code from KMail, copyright (c) 2004 Till Adam <[email protected]>
Copyright (c) 2004 by Richard Smith <[email protected]>
Kopete (c) 2004 by the Kopete developers <[email protected]>
*************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
*************************************************************************
*/
#include "kopetelistviewsearchline.h"
#include "kopetelistviewitem.h"
#include "kopetelistview.h"
namespace Kopete {
namespace UI {
namespace ListView {
SearchLine::SearchLine( QWidget *parent, ListView *listView, const char *name )
: KListViewSearchLine( parent, listView, name )
{
}
SearchLine::SearchLine(QWidget *parent, const char *name)
: KListViewSearchLine( parent, 0, name )
{
}
SearchLine::~SearchLine()
{
}
void SearchLine::updateSearch( const QString &s )
{
// we copy a huge chunk of code here simply in order to override
// the way items are shown/hidden. KSearchLine rudely
// calls setVisible() on items with no way to customise this behaviour.
//BEGIN code from KSearchLine::updateSearch
if( !listView() )
return;
search = s.isNull() ? text() : s;
// If there's a selected item that is visible, make sure that it's visible
// when the search changes too (assuming that it still matches).
QListViewItem *currentItem = 0;
switch( listView()->selectionMode() )
{
case KListView::NoSelection:
break;
case KListView::Single:
currentItem = listView()->selectedItem();
break;
default:
for( QListViewItemIterator it(listView(), QListViewItemIterator::Selected | QListViewItemIterator::Visible);
it.current() && !currentItem; ++it )
{
if( listView()->itemRect( it.current() ).isValid() )
currentItem = it.current();
}
}
if( keepParentsVisible() )
checkItemParentsVisible( listView()->firstChild() );
else
checkItemParentsNotVisible();
if( currentItem )
listView()->ensureItemVisible( currentItem );
//END code from KSearchLine::updateSearch
}
void SearchLine::checkItemParentsNotVisible()
{
//BEGIN code from KSearchLine::checkItemParentsNotVisible
QListViewItemIterator it( listView() );
for( ; it.current(); ++it )
{
QListViewItem *item = it.current();
if( itemMatches( item, search ) )
setItemVisible( item, true );
else
setItemVisible( item, false );
}
//END code from KSearchLine::checkItemParentsNotVisible
}
bool SearchLine::checkItemParentsVisible( QListViewItem *item )
{
//BEGIN code from KSearchLine::checkItemParentsVisible
bool visible = false;
for( ; item; item = item->nextSibling() ) {
if( ( item->firstChild() && checkItemParentsVisible( item->firstChild() ) ) ||
itemMatches( item, search ) )
{
setItemVisible( item, true );
// OUCH! this operation just became exponential-time.
// however, setting an item visible sets all its descendents
// visible too, which we definitely don't want.
// plus, in Kopete the nesting is never more than 2 deep,
// so this really just doubles the runtime, if that.
// this still can be done in O(n) time by a mark-set process,
// but that's overkill in our case.
checkItemParentsVisible( item->firstChild() );
visible = true;
}
else
setItemVisible( item, false );
}
return visible;
//END code from KSearchLine::checkItemParentsVisible
}
void SearchLine::setItemVisible( QListViewItem *it, bool b )
{
if( Item *item = dynamic_cast<Item*>( it ) )
item->setSearchMatch( b );
else
it->setVisible( b );
}
} // namespace ListView
} // namespace UI
} // namespace Kopete
#include "kopetelistviewsearchline.moc"
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