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184 lines
4.9 KiB
184 lines
4.9 KiB
13 years ago
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/****************************************************************************
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**
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** Implementation of QSignalMapper class
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**
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** Created : 980503
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**
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** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
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**
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** This file is part of the kernel module of the Qt GUI Toolkit.
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**
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** This file may be used under the terms of the GNU General
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** Public License versions 2.0 or 3.0 as published by the Free
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** Software Foundation and appearing in the files LICENSE.GPL2
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** and LICENSE.GPL3 included in the packaging of this file.
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** Alternatively you may (at your option) use any later version
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** of the GNU General Public License if such license has been
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** publicly approved by Trolltech ASA (or its successors, if any)
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** and the KDE Free Qt Foundation.
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**
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** Please review the following information to ensure GNU General
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** Public Licensing requirements will be met:
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** http://trolltech.com/products/qt/licenses/licensing/opensource/.
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** If you are unsure which license is appropriate for your use, please
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** review the following information:
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** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
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** or contact the sales department at sales@trolltech.com.
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**
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** This file may be used under the terms of the Q Public License as
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** defined by Trolltech ASA and appearing in the file LICENSE.QPL
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** included in the packaging of this file. Licensees holding valid Qt
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** Commercial licenses may use this file in accordance with the Qt
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** Commercial License Agreement provided with the Software.
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**
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** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
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** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
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** herein.
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**
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**********************************************************************/
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#include "qsignalmapper.h"
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#ifndef QT_NO_SIGNALMAPPER
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#include "qptrdict.h"
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struct QSignalMapperRec {
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QSignalMapperRec()
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{
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has_int = 0;
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str_id = QString::null;
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}
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uint has_int:1;
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int int_id;
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QString str_id;
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// extendable to other types of identification
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};
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class QSignalMapperData {
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public:
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QSignalMapperData()
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{
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dict.setAutoDelete( TRUE );
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}
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QPtrDict<QSignalMapperRec> dict;
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};
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/*!
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\class QSignalMapper qsignalmapper.h
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\brief The QSignalMapper class bundles signals from identifiable senders.
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\ingroup io
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This class collects a set of parameterless signals, and re-emits
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them with integer or string parameters corresponding to the object
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that sent the signal.
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*/
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/*!
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Constructs a QSignalMapper called \a name, with parent \a parent.
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Like all QObjects, it will be deleted when the parent is deleted.
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*/
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QSignalMapper::QSignalMapper( QObject* parent, const char* name ) :
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QObject( parent, name )
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{
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d = new QSignalMapperData;
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}
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/*!
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Destroys the QSignalMapper.
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*/
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QSignalMapper::~QSignalMapper()
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{
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delete d;
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}
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/*!
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Adds a mapping so that when map() is signaled from the given \a
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sender, the signal mapped(\a identifier) is emitted.
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There may be at most one integer identifier for each object.
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*/
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void QSignalMapper::setMapping( const QObject* sender, int identifier )
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{
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QSignalMapperRec* rec = getRec(sender);
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rec->int_id = identifier;
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rec->has_int = 1;
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}
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/*!
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\overload
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Adds a mapping so that when map() is signaled from the given \a
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sender, the signal mapper(\a identifier) is emitted.
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There may be at most one string identifier for each object, and it
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may not be empty.
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*/
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void QSignalMapper::setMapping( const QObject* sender, const QString &identifier )
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{
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QSignalMapperRec* rec = getRec(sender);
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rec->str_id = identifier;
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}
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/*!
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Removes all mappings for \a sender. This is done automatically
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when mapped objects are destroyed.
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*/
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void QSignalMapper::removeMappings( const QObject* sender )
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{
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d->dict.remove((void*)sender);
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}
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void QSignalMapper::removeMapping()
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{
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removeMappings(sender());
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}
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/*!
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This slot emits signals based on which object sends signals to it.
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*/
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void QSignalMapper::map()
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{
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const QObject* s = sender();
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QSignalMapperRec* rec = d->dict.find( (void*)s );
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if ( rec ) {
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if ( rec->has_int )
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emit mapped( rec->int_id );
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if ( !rec->str_id.isEmpty() )
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emit mapped( rec->str_id );
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}
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}
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QSignalMapperRec* QSignalMapper::getRec( const QObject* sender )
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{
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QSignalMapperRec* rec = d->dict.find( (void*)sender );
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if (!rec) {
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rec = new QSignalMapperRec;
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d->dict.insert( (void*)sender, rec );
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connect( sender, SIGNAL(destroyed()), this, SLOT(removeMapping()) );
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}
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return rec;
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}
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/*!
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\fn void QSignalMapper::mapped(int)
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This signal is emitted when map() is signaled from an object that
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has an integer mapping set.
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\sa setMapping()
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*/
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/*!
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\overload void QSignalMapper::mapped(const QString&)
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This signal is emitted when map() is signaled from an object that
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has a string mapping set.
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\sa setMapping()
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*/
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#endif //QT_NO_SIGNALMAPPER
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