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