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232 lines
6.9 KiB
232 lines
6.9 KiB
/****************************************************************************
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** $Id: qinputcontextplugin.cpp,v 1.2 2004/06/20 18:43:11 daisuke Exp $
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**
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** Implementation of QInputContextPlugin class
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**
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** Created : 010920
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**
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** Copyright (C) 2001 Trolltech AS. All rights reserved.
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**
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** This file is part of the widgets module of the Qt GUI Toolkit.
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**
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** This file may be distributed under the terms of the Q Public License
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** as defined by Trolltech AS of Norway and appearing in the file
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** LICENSE.QPL included in the packaging of this file.
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**
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** This file may be distributed and/or modified under the terms of the
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** GNU General Public License version 2 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file.
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**
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** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
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** licenses may use this file in accordance with the Qt Commercial License
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** 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, INCLUDING THE
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** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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**
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** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
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** information about Qt Commercial License Agreements.
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** See http://www.trolltech.com/qpl/ for QPL licensing information.
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** See http://www.trolltech.com/gpl/ for GPL licensing information.
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**
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** Contact info@trolltech.com if any conditions of this licensing are
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** not clear to you.
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**
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**********************************************************************/
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#include "qinputcontextplugin.h"
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#ifndef QT_NO_IM
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#ifndef QT_NO_COMPONENT
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#include "qinputcontextinterface_p.h"
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/*!
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\class QInputContextPlugin qinputcontextplugin.h
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\brief The QInputContextPlugin class provides an abstract base for custom QInputContext plugins.
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\reentrant
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\ingroup plugins
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The input context plugin is a simple plugin interface that makes it
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easy to create custom input contexts that can be loaded dynamically
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into applications.
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Writing a input context plugin is achieved by subclassing this
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base class, reimplementing the pure virtual functions keys(),
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create(), languages(), displayName() description() and exporting
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the class with the \c Q_EXPORT_PLUGIN macro. See the \link
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plugins-howto.html Qt Plugins documentation \endlink for details.
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\sa QInputContext
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*/
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/*!
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\fn QStringList QInputContextPlugin::keys() const
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Returns the list of QInputContext keys this plugin provides.
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These keys are usually the class names of the custom input context
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that are implemented in the plugin.
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Return value is the names to identify and specify input methods
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for the input method switching mechanism and so on. The names have
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to be consistent with QInputContext::identifierName(). The names
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have to consist of ASCII characters only. See also
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QInputContext::identifierName() for further information.
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\sa create(), displayName(), QInputContext::identifierName()
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*/
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/*!
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\fn QInputContext* QInputContextPlugin::create( const QString& key )
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Creates and returns a QInputContext instance for the input context key \a key.
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The input context key is usually the class name of the required input method.
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\sa keys()
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*/
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/*!
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\fn QStringList languages( const QString &key )
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Returns what languages are supported by the QInputContext instance
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specified by \a key.
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The languages are expressed as language code (e.g. "zh_CN",
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"zh_TW", "zh_HK", "ja", "ko", ...). An input context that suports
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multiple languages can return all supported languages as
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QStringList. The name has to be consistent with
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QInputContextPlugin::language().
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This information may be used to optimize user interface.
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\sa QInputContext::language()
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*/
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/*!
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\fn QString displayName( const QString &key )
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Returns a user friendly i18n-ized name of the QInputContext
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instance specified by \a key. This string may be appeared in a
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menu and so on for users.
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There are two different names with different responsibility in the
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input method domain. This function returns one of them. Another
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name is called 'identifier name' to identify and specify input
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methods for the input method switching mechanism and so on.
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Although tr( identifierName ) can provide user friendly i18n-ized
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name without this function, the message catalog have to be managed
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by Qt in the case. However, some sophisticated input method
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framework manages their own message catalogs to provide this
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i18n-ized name string. So we need this function rather than just
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call tr() for identifier name.
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\sa keys(), QInputContext::identifierName()
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*/
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/*!
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\fn QString description( const QString &key )
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Returns a i18n-ized brief description of the QInputContext
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instance specified by \a key. This string may be appeared in some
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user interfaces.
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*/
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class QInputContextPluginPrivate : public QInputContextFactoryInterface
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{
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public:
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QInputContextPluginPrivate( QInputContextPlugin *p )
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: plugin( p )
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{
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}
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virtual ~QInputContextPluginPrivate();
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QRESULT queryInterface( const QUuid &iid, QUnknownInterface **iface );
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Q_REFCOUNT;
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QStringList featureList() const;
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QInputContext *create( const QString &key );
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QStringList languages( const QString &key );
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QString displayName( const QString &key );
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QString description( const QString &key );
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private:
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QInputContextPlugin *plugin;
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};
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QRESULT QInputContextPluginPrivate::queryInterface( const QUuid &iid, QUnknownInterface **iface )
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{
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*iface = 0;
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if ( iid == IID_QUnknown )
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*iface = this;
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else if ( iid == IID_QFeatureList )
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*iface = this;
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else if ( iid == IID_QInputContextFactory )
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*iface = this;
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else
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return QE_NOINTERFACE;
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(*iface)->addRef();
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return QS_OK;
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}
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QInputContextPluginPrivate::~QInputContextPluginPrivate()
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{
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delete plugin;
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}
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QStringList QInputContextPluginPrivate::featureList() const
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{
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return plugin->keys();
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}
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QInputContext *QInputContextPluginPrivate::create( const QString &key )
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{
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return plugin->create( key );
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}
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QStringList QInputContextPluginPrivate::languages( const QString &key )
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{
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return plugin->languages( key );
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}
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QString QInputContextPluginPrivate::displayName( const QString &key )
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{
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return plugin->displayName( key );
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}
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QString QInputContextPluginPrivate::description( const QString &key )
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{
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return plugin->description( key );
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}
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/*!
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Constructs a input context plugin. This is invoked automatically by the
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\c Q_EXPORT_PLUGIN macro.
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*/
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QInputContextPlugin::QInputContextPlugin()
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: QGPlugin( d = new QInputContextPluginPrivate( this ) )
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{
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}
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/*!
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Destroys the input context plugin.
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You never have to call this explicitly. Qt destroys a plugin
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automatically when it is no longer used.
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*/
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QInputContextPlugin::~QInputContextPlugin()
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{
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// don't delete d, as this is deleted by d
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}
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#endif // QT_NO_COMPONENT
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#endif // QT_NO_IM
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