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Diffstat (limited to 'src/declarative/qml/qmlwatcher.cpp')
| -rw-r--r-- | src/declarative/qml/qmlwatcher.cpp | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/src/declarative/qml/qmlwatcher.cpp b/src/declarative/qml/qmlwatcher.cpp new file mode 100644 index 0000000..eb00dfe --- /dev/null +++ b/src/declarative/qml/qmlwatcher.cpp @@ -0,0 +1,183 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the QtDeclarative module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QtCore/qmetaobject.h> +#include <QtCore/qdebug.h> +#include <QtDeclarative/qmlexpression.h> +#include <QtDeclarative/qmldebugservice.h> +#include <QtDeclarative/qmlcontext.h> +#include <QtDeclarative/qml.h> + +#include "qmlwatcher_p.h" + +QT_BEGIN_NAMESPACE + + +class QmlWatchProxy : public QObject +{ + Q_OBJECT +public: + QmlWatchProxy(int id, + QObject *object, + int debugId, + const QMetaProperty &prop, + QmlWatcher *parent = 0); + + QmlWatchProxy(int id, + QmlExpression *exp, + int debugId, + QmlWatcher *parent = 0); + +public slots: + void notifyValueChanged(); + +private: + friend class QmlWatcher; + int m_id; + QmlWatcher *m_watch; + QObject *m_object; + int m_debugId; + QMetaProperty m_property; + + QmlExpression *m_expr; +}; + +QmlWatchProxy::QmlWatchProxy(int id, + QmlExpression *exp, + int debugId, + QmlWatcher *parent) +: QObject(parent), m_id(id), m_watch(parent), m_object(0), m_debugId(debugId), m_expr(exp) +{ + QObject::connect(m_expr, SIGNAL(valueChanged()), this, SLOT(notifyValueChanged())); +} + +QmlWatchProxy::QmlWatchProxy(int id, + QObject *object, + int debugId, + const QMetaProperty &prop, + QmlWatcher *parent) +: QObject(parent), m_id(id), m_watch(parent), m_object(object), m_debugId(debugId), m_property(prop), m_expr(0) +{ + static int refreshIdx = -1; + if(refreshIdx == -1) + refreshIdx = QmlWatchProxy::staticMetaObject.indexOfMethod("notifyValueChanged()"); + + if (prop.hasNotifySignal()) + QMetaObject::connect(m_object, prop.notifySignalIndex(), this, refreshIdx); +} + +void QmlWatchProxy::notifyValueChanged() +{ + QVariant v; + if (m_expr) + v = m_expr->value(); + else + v = m_property.read(m_object); + + emit m_watch->propertyChanged(m_id, m_debugId, QByteArray(m_property.name()), v); +} + + +QmlWatcher::QmlWatcher(QObject *parent) + : QObject(parent) +{ +} + +bool QmlWatcher::addWatch(int id, quint32 debugId) +{ + QObject *object = QmlDebugService::objectForId(debugId); + if (object) { + int propCount = object->metaObject()->propertyCount(); + for (int ii=0; ii<propCount; ii++) + addPropertyWatch(id, object, debugId, object->metaObject()->property(ii)); + return true; + } + return false; +} + +bool QmlWatcher::addWatch(int id, quint32 debugId, const QByteArray &property) +{ + QObject *object = QmlDebugService::objectForId(debugId); + if (object) { + int index = object->metaObject()->indexOfProperty(property.constData()); + if (index >= 0) { + addPropertyWatch(id, object, debugId, object->metaObject()->property(index)); + return true; + } + } + return false; +} + +bool QmlWatcher::addWatch(int id, quint32 objectId, const QString &expr) +{ + QObject *object = QmlDebugService::objectForId(objectId); + QmlContext *context = qmlContext(object); + if (context) { + QmlExpression *exprObj = new QmlExpression(context, expr, object); + QmlWatchProxy *proxy = new QmlWatchProxy(id, exprObj, objectId, this); + exprObj->setParent(proxy); + m_proxies[id].append(proxy); + proxy->notifyValueChanged(); + return true; + } + return false; +} + +void QmlWatcher::removeWatch(int id) +{ + if (!m_proxies.contains(id)) + return; + + QList<QPointer<QmlWatchProxy> > proxies = m_proxies.take(id); + qDeleteAll(proxies); +} + +void QmlWatcher::addPropertyWatch(int id, QObject *object, quint32 debugId, const QMetaProperty &property) +{ + QmlWatchProxy *proxy = new QmlWatchProxy(id, object, debugId, property, this); + m_proxies[id].append(proxy); + + proxy->notifyValueChanged(); +} + +QT_END_NAMESPACE + +#include "qmlwatch.moc" |