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179 lines
5.1 KiB
179 lines
5.1 KiB
/* -*- c++ -*-
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kwidgetlister.cpp
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This file is part of libkdenetwork.
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Copyright (c) 2001 Marc Mutz <mutz@kde.org>
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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 General Public License,
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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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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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In addition, as a special exception, the copyright holders give
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permission to link the code of this library with any edition of
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the TQt library by Trolltech AS, Norway (or with modified versions
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of TQt that use the same license as TQt), and distribute linked
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combinations including the two. You must obey the GNU General
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Public License in all respects for all of the code used other than
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TQt. If you modify this file, you may extend this exception to
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your version of the file, but you are not obligated to do so. If
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you do not wish to do so, delete this exception statement from
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your version.
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*/
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#include "kwidgetlister.h"
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#include <klocale.h>
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#include <kdebug.h>
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#include <tqpushbutton.h>
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#include <tqlayout.h>
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#include <tqhbox.h>
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#include <assert.h>
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#include <kguiitem.h>
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#include <kpushbutton.h>
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#include <kdialog.h>
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KWidgetLister::KWidgetLister( int minWidgets, int maxWidgets, TQWidget *tqparent, const char* name )
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: TQWidget( tqparent, name )
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{
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mWidgetList.setAutoDelete(TRUE);
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mMinWidgets = TQMAX( minWidgets, 1 );
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mMaxWidgets = TQMAX( maxWidgets, mMinWidgets + 1 );
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//--------- the button box
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mLayout = new TQVBoxLayout(this, 0, 4);
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mButtonBox = new TQHBox(this);
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mButtonBox->setSpacing( KDialog::spacingHint() );
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mLayout->addWidget( mButtonBox );
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mBtnMore = new KPushButton( KGuiItem( i18n( "more widgets", "More" ), "button_more" ), mButtonBox );
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mButtonBox->setStretchFactor( mBtnMore, 0 );
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mBtnFewer = new KPushButton( KGuiItem( i18n( "fewer widgets", "Fewer" ), "button_fewer" ), mButtonBox );
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mButtonBox->setStretchFactor( mBtnFewer, 0 );
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TQWidget *spacer = new TQWidget( mButtonBox );
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mButtonBox->setStretchFactor( spacer, 1 );
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// FIXME: We need a KStdGuiItem::clear here and in other locations to be automagically RTL aware - Martijn
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mBtnClear = new KPushButton( KGuiItem( i18n( "clear widgets", "Clear" ), "locationbar_erase" ), mButtonBox );
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mButtonBox->setStretchFactor( mBtnClear, 0 );
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//---------- connect everything
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connect( mBtnMore, TQT_SIGNAL(clicked()),
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this, TQT_SLOT(slotMore()) );
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connect( mBtnFewer, TQT_SIGNAL(clicked()),
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this, TQT_SLOT(slotFewer()) );
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connect( mBtnClear, TQT_SIGNAL(clicked()),
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this, TQT_SLOT(slotClear()) );
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enableControls();
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}
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KWidgetLister::~KWidgetLister()
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{
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}
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void KWidgetLister::slotMore()
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{
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// the class should make certain that slotMore can't
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// be called when mMaxWidgets are on screen.
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assert( (int)mWidgetList.count() < mMaxWidgets );
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addWidgetAtEnd();
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// adjustSize();
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enableControls();
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}
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void KWidgetLister::slotFewer()
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{
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// the class should make certain that slotFewer can't
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// be called when mMinWidgets are on screen.
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assert( (int)mWidgetList.count() > mMinWidgets );
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removeLastWidget();
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// adjustSize();
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enableControls();
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}
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void KWidgetLister::slotClear()
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{
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setNumberOfShownWidgetsTo( mMinWidgets );
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// clear remaining widgets
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TQPtrListIterator<TQWidget> it( mWidgetList );
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for ( it.toFirst() ; it.current() ; ++it )
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clearWidget( (*it) );
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// adjustSize();
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enableControls();
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emit clearWidgets();
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}
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void KWidgetLister::addWidgetAtEnd(TQWidget *w)
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{
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if (!w) w = this->createWidget(this);
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mLayout->insertWidget( mLayout->tqfindWidget( mButtonBox ), w );
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mWidgetList.append( w );
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w->show();
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enableControls();
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emit widgetAdded();
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emit widgetAdded(w);
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}
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void KWidgetLister::removeLastWidget()
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{
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// The tqlayout will take care that the
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// widget is removed from screen, too.
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mWidgetList.removeLast();
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enableControls();
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emit widgetRemoved();
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}
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void KWidgetLister::clearWidget( TQWidget* /*aWidget*/ )
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{
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}
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TQWidget* KWidgetLister::createWidget( TQWidget* tqparent )
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{
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return new TQWidget( tqparent );
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}
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void KWidgetLister::setNumberOfShownWidgetsTo( int aNum )
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{
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int superfluousWidgets = TQMAX( (int)mWidgetList.count() - aNum, 0 );
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int missingWidgets = TQMAX( aNum - (int)mWidgetList.count(), 0 );
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// remove superfluous widgets
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for ( ; superfluousWidgets ; superfluousWidgets-- )
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removeLastWidget();
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// add missing widgets
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for ( ; missingWidgets ; missingWidgets-- )
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addWidgetAtEnd();
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}
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void KWidgetLister::enableControls()
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{
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int count = mWidgetList.count();
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bool isMaxWidgets = ( count >= mMaxWidgets );
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bool isMinWidgets = ( count <= mMinWidgets );
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mBtnMore->setEnabled( !isMaxWidgets );
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mBtnFewer->setEnabled( !isMinWidgets );
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}
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#include "kwidgetlister.moc"
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