/****************************************************************************+
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**+
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the QtGui module of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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**+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#include "qapplication.h"+
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#include "qevent.h"+
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#ifdef Q_WS_S60+
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#include "qstyle.h"+
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#include "private/qt_s60_p.h"+
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#endif+
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#include "private/qsoftkeymanager_p.h"+
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#include "private/qobject_p.h"+
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+
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QT_BEGIN_NAMESPACE+
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+
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#ifdef Q_WS_S60+
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static const int s60CommandStart = 6000;+
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#endif+
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+
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class QSoftKeyManagerPrivate : public QObjectPrivate+
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{+
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    Q_DECLARE_PUBLIC(QSoftKeyManager)+
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+
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public:+
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    static void updateSoftKeys_sys(const QList<QAction*> &softKeys);+
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+
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private:+
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    QHash<QAction*, Qt::Key> keyedActions;+
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    static QSoftKeyManager *self;+
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    static QWidget *softKeySource;+
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};+
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+
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QWidget *QSoftKeyManagerPrivate::softKeySource = 0;+
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QSoftKeyManager *QSoftKeyManagerPrivate::self = 0;+
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+
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const char *QSoftKeyManager::standardSoftKeyText(StandardSoftKey standardKey)+
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{+
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    const char *softKeyText = 0;+
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    switch (standardKey) {+
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    case OkSoftKey:+
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        softKeyText = QT_TRANSLATE_NOOP("QSoftKeyManager", "Ok");+
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        break;+
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    case SelectSoftKey:+
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        softKeyText = QT_TRANSLATE_NOOP("QSoftKeyManager", "Select");+
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        break;+
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    case DoneSoftKey:+
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        softKeyText = QT_TRANSLATE_NOOP("QSoftKeyManager", "Done");+
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        break;+
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    case MenuSoftKey:+
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        softKeyText = QT_TRANSLATE_NOOP("QSoftKeyManager", "Options");+
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        break;+
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    case CancelSoftKey:+
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        softKeyText = QT_TRANSLATE_NOOP("QSoftKeyManager", "Cancel");+
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        break;+
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    default:+
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        break;+
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    };+
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+
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    return softKeyText;+
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}+
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+
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QSoftKeyManager *QSoftKeyManager::instance()+
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{+
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    if (!QSoftKeyManagerPrivate::self)+
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        QSoftKeyManagerPrivate::self = new QSoftKeyManager;+
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+
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    return QSoftKeyManagerPrivate::self;+
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}+
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+
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QSoftKeyManager::QSoftKeyManager() : QObject(*(new QSoftKeyManagerPrivate), 0)+
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{+
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}+
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+
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QAction *QSoftKeyManager::createAction(StandardSoftKey standardKey, QWidget *actionWidget)+
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{+
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    const char* text = standardSoftKeyText(standardKey);+
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    QAction *action = new QAction(QSoftKeyManager::tr(text), actionWidget);+
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    QAction::SoftKeyRole softKeyRole = QAction::NoSoftKey;+
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    switch (standardKey) {+
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    case OkSoftKey:+
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    case SelectSoftKey:+
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    case DoneSoftKey:+
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    case MenuSoftKey:+
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        softKeyRole = QAction::PositiveSoftKey;+
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        break;+
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    case CancelSoftKey:+
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        softKeyRole = QAction::NegativeSoftKey;+
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        break;+
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    }+
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    action->setSoftKeyRole(softKeyRole);+
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    return action;+
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}+
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+
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/*! \internal+
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+
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  Creates a QAction and registers the 'triggered' signal to send the given key event to+
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  \a actionWidget as a convenience.+
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+
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*/+
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QAction *QSoftKeyManager::createKeyedAction(StandardSoftKey standardKey, Qt::Key key, QWidget *actionWidget)+
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{+
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    QScopedPointer<QAction> action(createAction(standardKey, actionWidget));+
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+
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    connect(action.data(), SIGNAL(triggered()), QSoftKeyManager::instance(), SLOT(sendKeyEvent()));+
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+
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    QSoftKeyManager::instance()->d_func()->keyedActions.insert(action.data(), key);+
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    return action.take();+
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}+
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+
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void QSoftKeyManager::sendKeyEvent()+
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{+
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    Q_D(QSoftKeyManager);+
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    QAction *action = qobject_cast<QAction*>(sender());+
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+
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    if (!action)+
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        return;+
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+
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    Qt::Key keyToSend = d->keyedActions.value(action, Qt::Key_unknown);+
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+
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    if (keyToSend != Qt::Key_unknown)+
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        QApplication::postEvent(action->parentWidget(),+
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                                new QKeyEvent(QEvent::KeyPress, keyToSend, Qt::NoModifier));+
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}+
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+
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void QSoftKeyManager::updateSoftKeys()+
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{+
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    QEvent *event = new QEvent(QEvent::UpdateSoftKeys);+
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    QApplication::postEvent(QSoftKeyManager::instance(), event);+
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}+
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+
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bool QSoftKeyManager::event(QEvent *e)+
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{+
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    if (e->type() == QEvent::UpdateSoftKeys) {+
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        QList<QAction*> softKeys;+
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        QWidget *source = QApplication::focusWidget();+
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        do {+
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            if (source) {+
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                QList<QAction*> actions = source->actions();+
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                for (int i = 0; i < actions.count(); ++i) {+
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                    if (actions.at(i)->softKeyRole() != QAction::NoSoftKey)+
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                        softKeys.append(actions.at(i));+
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                }+
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+
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                QWidget *parent = source->parentWidget();+
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                if (parent && softKeys.isEmpty())+
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                    source = parent;+
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                else+
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                    break;+
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            } else {+
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                source = QApplication::activeWindow();+
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            }+
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        } while (source);+
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+
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        QSoftKeyManagerPrivate::softKeySource = source;+
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        QSoftKeyManagerPrivate::updateSoftKeys_sys(softKeys);+
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        return true;+
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    }+
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    return false;+
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}+
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+
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#ifdef Q_WS_S60+
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void QSoftKeyManagerPrivate::updateSoftKeys_sys(const QList<QAction*> &softkeys)+
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{+
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    CEikButtonGroupContainer* nativeContainer = S60->buttonGroupContainer();+
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    nativeContainer->DrawableWindow()->SetPointerCapturePriority(1); //keep softkeys available in modal dialog+
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    QT_TRAP_THROWING(nativeContainer->SetCommandSetL(R_AVKON_SOFTKEYS_EMPTY_WITH_IDS));+
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+
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    int position = -1;+
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    int command;+
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    bool needsExitButton = true;+
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+
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    for (int index = 0; index < softkeys.count(); index++) {+
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        const QAction* softKeyAction = softkeys.at(index);+
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        switch (softKeyAction->softKeyRole()) {+
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        // Positive Actions on the LSK+
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        case QAction::PositiveSoftKey:+
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            position = 0;+
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            break;+
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        case QAction::SelectSoftKey:+
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            position = 0;+
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            break;+
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        // Negative Actions on the RSK+
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        case QAction::NegativeSoftKey:+
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            needsExitButton = false;+
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            position = 2;+
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            break;+
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        default:+
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            break;+
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        }+
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+
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        command = (softKeyAction->objectName().contains("_q_menuSoftKeyAction"))+
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                    ? EAknSoftkeyOptions+
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                    : s60CommandStart + index;+
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+
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        if (position != -1) {+
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            const int underlineShortCut = QApplication::style()->styleHint(QStyle::SH_UnderlineShortcut);+
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            QString iconText = softKeyAction->iconText();+
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            TPtrC text = qt_QString2TPtrC( underlineShortCut ? softKeyAction->text() : iconText);+
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            QT_TRAP_THROWING(nativeContainer->SetCommandL(position, command, text));+
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        }+
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    }+
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+
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    if (needsExitButton)+
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        QT_TRAP_THROWING(nativeContainer->SetCommandL(2, EAknSoftkeyExit, qt_QString2TPtrC(QSoftKeyManager::tr("Exit"))));+
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+
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    nativeContainer->DrawDeferred(); // 3.1 needs an extra invitation+
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}+
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+
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bool QSoftKeyManager::handleCommand(int command)+
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{+
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    if (command >= s60CommandStart && QSoftKeyManagerPrivate::softKeySource) {+
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        int index = command - s60CommandStart;+
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        const QList<QAction*>& softKeys = QSoftKeyManagerPrivate::softKeySource->actions();+
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        for (int i = 0, j = 0; i < softKeys.count(); ++i) {+
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            QAction *action = softKeys.at(i);+
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            if (action->softKeyRole() != QAction::NoSoftKey) {+
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                if (j == index) {+
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                    QWidget *parent = action->parentWidget();+
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                    if (parent && parent->isEnabled()) {+
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                        action->activate(QAction::Trigger);+
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                        return true;+
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                    }+
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                }+
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                j++;+
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            }+
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        }+
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    }+
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+
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    return false;+
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}+
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+
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#else+
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+
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void QSoftKeyManagerPrivate::updateSoftKeys_sys(const QList<QAction*> &)+
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{+
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}+
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+
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#endif+
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+
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QT_END_NAMESPACE+
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+
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