source: trunk/src/gui/inputmethod/qinputcontextfactory.cpp@ 203

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/****************************************************************************
**
** Implementation of QInputContextFactory class
**
** Copyright (C) 2003-2004 immodule for Qt Project.  All rights reserved.
**
** This file is written to contribute to Nokia Corporation and/or its subsidiary(-ies) under their own
** license. You may use this file under your Qt license. Following
** description is copied from their original file headers. Contact
** [email protected] if any conditions of this licensing are
** not clear to you.
**
****************************************************************************/

#include "qinputcontextfactory.h"

#ifndef QT_NO_IM

#include "qcoreapplication.h"
#include "qinputcontext.h"
#include "qinputcontextplugin.h"

#ifdef Q_WS_X11
#include "private/qt_x11_p.h"
#include "qximinputcontext_p.h"
#endif
#ifdef Q_WS_WIN
#include "qwininputcontext_p.h"
#endif
#ifdef Q_WS_MAC
#include "qmacinputcontext_p.h"
#endif

#include "private/qfactoryloader_p.h"
#include "qmutex.h"

QT_BEGIN_NAMESPACE

#if !defined(QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)
Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, loader,
    (QInputContextFactoryInterface_iid, QLatin1String("/inputmethods")))
#endif

/*!
    \class QInputContextFactory
    \brief The QInputContextFactory class creates QInputContext objects.

    \ingroup appearance

    The input context factory creates a QInputContext object for a
    given key with QInputContextFactory::create().

    The input contexts are either built-in or dynamically loaded from
    an input context plugin (see QInputContextPlugin).

    keys() returns a list of valid keys. The
    keys are the names used, for example, to identify and specify
    input methods for the input method switching mechanism. The names
    have to be consistent with QInputContext::identifierName(), and
    may only contain ASCII characters.

    A key can be used to retrieve the associated input context's
    supported languages using languages(). You
    can retrieve the input context's description using
    description() and finally you can get a user
    friendly internationalized name of the QInputContext object
    specified by the key using displayName().

    \legalese
    Copyright (C) 2003-2004 immodule for Qt Project.  All rights reserved.

    This file is written to contribute to Nokia Corporation and/or its subsidiary(-ies) under their own
    license. You may use this file under your Qt license. Following
    description is copied from their original file headers. Contact
    [email protected] if any conditions of this licensing are
    not clear to you.
    \endlegalese

    \sa QInputContext, QInputContextPlugin
*/

/*!
    Creates and returns a QInputContext object for the input context
    specified by \a key with the given \a parent. Keys are case
    sensitive.

    \sa keys()
*/
QInputContext *QInputContextFactory::create( const QString& key, QObject *parent )
{
    QInputContext *result = 0;
#if defined(Q_WS_X11) && !defined(QT_NO_XIM)
    if (key == QLatin1String("xim")) {
        result = new QXIMInputContext;
    }
#endif
#if defined(Q_WS_WIN)
    if (key == QLatin1String("win")) {
        result = new QWinInputContext;
    }
#endif
#if defined(Q_WS_MAC)
    if (key == QLatin1String("mac")) {
        result = new QMacInputContext;
    }
#endif
#if defined(QT_NO_LIBRARY) || defined(QT_NO_SETTINGS)
    Q_UNUSED(key);
#else
    if (QInputContextFactoryInterface *factory =
        qobject_cast<QInputContextFactoryInterface*>(loader()->instance(key))) {
        result = factory->create(key);
    }
#endif
    if (result)
        result->setParent(parent);
    return result;
}


/*!
    Returns the list of keys this factory can create input contexts
    for.

    The keys are the names used, for example, to identify and specify
    input methods for the input method switching mechanism.  The names
    have to be consistent with QInputContext::identifierName(), and
    may only contain ASCII characters.

    \sa create(), displayName(), QInputContext::identifierName()
*/
QStringList QInputContextFactory::keys()
{
    QStringList result;
#if defined(Q_WS_X11) && !defined(QT_NO_XIM)
    result << QLatin1String("xim");
#endif
#if defined(Q_WS_WIN) && !defined(QT_NO_XIM)
    result << QLatin1String("win");
#endif
#if defined(Q_WS_MAC)
    result << QLatin1String("mac");
#endif
#if !defined(QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)
    result += loader()->keys();
#endif // QT_NO_LIBRARY
    return result;
}