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309 lines
8.3 KiB
309 lines
8.3 KiB
/* This file is part of the KDE libraries
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Copyright (c) 2010 Timothy Pearson <kb9vqf@pearsoncomputing.net>
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Copyright (c) 2004 Gustavo Sverzut Barbieri <gsbarbieri@users.sourceforge.net>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License version 2 as published by the Free Software Foundation.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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/**
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* \todo
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* Maybe we should have a common interface for SearchLines, this file
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* is so close (it's actually based on) klistviewsearchline! Only few methods
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* would be reimplemented.
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*/
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#include "kiconviewsearchline.h"
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#include <tqiconview.h>
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#include <klocale.h>
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#include <tqtimer.h>
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#include <kdebug.h>
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#define DEFAULT_CASESENSITIVE false
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typedef TQValueList <TQIconViewItem *> QIconViewItemList;
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class KIconViewSearchLine::KIconViewSearchLinePrivate
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{
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public:
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KIconViewSearchLinePrivate() :
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iconView( 0 ),
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caseSensitive( DEFAULT_CASESENSITIVE ),
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activeSearch( false ),
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hiddenListChanged( 0 ),
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queuedSearches( 0 ) {}
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TQIconView *iconView;
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bool caseSensitive;
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bool activeSearch;
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TQString search;
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int queuedSearches;
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int hiddenListChanged;
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QIconViewItemList hiddenItems;
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};
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/******************************************************************************
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* Public Methods *
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*****************************************************************************/
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KIconViewSearchLine::KIconViewSearchLine( TQWidget *parent,
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TQIconView *iconView,
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const char *name ) :
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KLineEdit( parent, name )
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{
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d = NULL;
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init( iconView );
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}
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KIconViewSearchLine::KIconViewSearchLine( TQWidget *parent, const char *name ) :
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KLineEdit( parent, name )
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{
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d = NULL;
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init( NULL );
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}
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KIconViewSearchLine::~KIconViewSearchLine()
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{
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clear(); // empty hiddenItems, returning items back to iconView
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delete d;
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}
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bool KIconViewSearchLine::caseSensitive() const
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{
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return d->caseSensitive;
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}
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TQIconView *KIconViewSearchLine::iconView() const
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{
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return d->iconView;
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}
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/******************************************************************************
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* Public Slots *
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*****************************************************************************/
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void KIconViewSearchLine::updateSearch( const TQString &s )
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{
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long original_count;
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int original_hiddenListChanged;
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if( ! d->iconView )
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return; // disabled
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TQString search = d->search = s.isNull() ? text() : s;
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TQIconViewItem *currentItem = d->iconView->currentItem();
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TQIconViewItem *item = NULL;
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// Remove Non-Matching items, add them them to hidden list
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TQIconViewItem *i = d->iconView->firstItem();
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while ( i != NULL ) {
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item = i;
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i = i->nextItem(); // Point to next, otherwise will loose it.
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if ( ! itemMatches( item, search ) ) {
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hideItem( item );
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if ( item == currentItem )
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currentItem = NULL; // It's not in iconView anymore.
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}
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}
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// Add Matching items, remove from hidden list
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original_count = d->hiddenItems.count();
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original_hiddenListChanged = d->hiddenListChanged;
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for (QIconViewItemList::iterator it=d->hiddenItems.begin();it!=d->hiddenItems.end();++it) {
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item = *it;
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if ((original_count != d->hiddenItems.count()) || (original_hiddenListChanged != d->hiddenListChanged)) {
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// The list has changed; pointers are now most likely invalid
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// ABORT, but restart the search at the beginning
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original_count = d->hiddenItems.count();
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original_hiddenListChanged = d->hiddenListChanged;
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it=d->hiddenItems.begin();
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}
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else {
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if ( itemMatches( item, search ) )
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showItem( item );
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}
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}
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d->iconView->sort();
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if ( currentItem != NULL )
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d->iconView->ensureItemVisible( currentItem );
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}
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void KIconViewSearchLine::clear()
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{
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// Clear hidden list, give items back to TQIconView, if it still exists
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TQIconViewItem *item = NULL;
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QIconViewItemList::iterator it = d->hiddenItems.begin();
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while ( it != d->hiddenItems.end() )
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{
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item = *it;
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++it;
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if ( item != NULL )
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{
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if ( d->iconView != NULL )
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showItem( item );
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else
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delete item;
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}
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}
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if ( ! d->hiddenItems.isEmpty() )
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kdDebug() << __FILE__ << ":" << __LINE__ <<
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"hiddenItems is not empty as it should be. " <<
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d->hiddenItems.count() << " items are still there.\n" << endl;
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d->search = "";
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d->queuedSearches = 0;
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KLineEdit::clear();
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}
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void KIconViewSearchLine::iconDeleted(const TQString &filename) {
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// Clear hidden list, give items back to TQIconView, if it still exists
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TQIconViewItem *item = NULL;
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QIconViewItemList::iterator it = d->hiddenItems.begin();
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while ( it != d->hiddenItems.end() )
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{
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item = *it;
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++it;
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if ( item != NULL )
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{
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if (item->text() == filename) {
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if (d->iconView != NULL)
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showItem( item );
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else
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delete item;
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}
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}
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}
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}
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void KIconViewSearchLine::setCaseSensitive( bool cs )
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{
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d->caseSensitive = cs;
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}
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void KIconViewSearchLine::setIconView( TQIconView *iv )
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{
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if ( d->iconView != NULL )
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disconnect( d->iconView, TQT_SIGNAL( destroyed() ),
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this, TQT_SLOT( iconViewDeleted() ) );
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d->iconView = iv;
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if ( iv != NULL )
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{
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connect( d->iconView, TQT_SIGNAL( destroyed() ),
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this, TQT_SLOT( iconViewDeleted() ) );
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setEnabled( true );
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}
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else
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setEnabled( false );
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}
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/******************************************************************************
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* Protected Methods *
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*****************************************************************************/
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bool KIconViewSearchLine::itemMatches( const TQIconViewItem *item,
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const TQString &s ) const
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{
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if ( s.isEmpty() )
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return true;
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if ( item == NULL )
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return false;
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TQString itemtext = item->text();
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return ( itemtext.find( s, 0, caseSensitive() ) >= 0 );
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}
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void KIconViewSearchLine::init( TQIconView *iconView )
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{
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delete d;
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d = new KIconViewSearchLinePrivate;
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d->iconView = iconView;
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connect( this, TQT_SIGNAL( textChanged( const TQString & ) ),
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this, TQT_SLOT( queueSearch( const TQString & ) ) );
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if ( iconView != NULL )
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{
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connect( iconView, TQT_SIGNAL( destroyed() ),
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this, TQT_SLOT( iconViewDeleted() ) );
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setEnabled( true );
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}
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else
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setEnabled( false );
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}
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void KIconViewSearchLine::hideItem( TQIconViewItem *item )
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{
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if ( ( item == NULL ) || ( d->iconView == NULL ) )
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return;
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d->hiddenListChanged++;
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d->hiddenItems.append( item );
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d->iconView->takeItem( item );
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}
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void KIconViewSearchLine::showItem( TQIconViewItem *item )
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{
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if ( d->iconView == NULL )
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{
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kdDebug() << __FILE__ << ":" << __LINE__ <<
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"showItem() could not be called while there's no iconView set." <<
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endl;
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return;
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}
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d->hiddenListChanged++;
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d->iconView->insertItem( item );
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d->hiddenItems.remove( item );
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item->setText(item->text());
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}
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/******************************************************************************
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* Protected Slots *
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*****************************************************************************/
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void KIconViewSearchLine::queueSearch( const TQString &s )
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{
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d->queuedSearches++;
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d->search = s;
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TQTimer::singleShot( 200, this, TQT_SLOT( activateSearch() ) );
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}
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void KIconViewSearchLine::activateSearch()
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{
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d->queuedSearches--;
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if ( d->queuedSearches <= 0 )
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{
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updateSearch( d->search );
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d->queuedSearches = 0;
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}
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else {
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TQTimer::singleShot( 200, this, TQT_SLOT( activateSearch() ) );
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}
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}
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/******************************************************************************
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* Private Slots *
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*****************************************************************************/
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void KIconViewSearchLine::iconViewDeleted()
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{
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d->iconView = NULL;
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setEnabled( false );
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}
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#include "kiconviewsearchline.moc"
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