diff options
Diffstat (limited to 'src/plugins/qmltooling/qmldbg_debugger/qqmlwatcher.cpp')
| -rw-r--r-- | src/plugins/qmltooling/qmldbg_debugger/qqmlwatcher.cpp | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/src/plugins/qmltooling/qmldbg_debugger/qqmlwatcher.cpp b/src/plugins/qmltooling/qmldbg_debugger/qqmlwatcher.cpp new file mode 100644 index 0000000000..9f9a6eb33b --- /dev/null +++ b/src/plugins/qmltooling/qmldbg_debugger/qqmlwatcher.cpp @@ -0,0 +1,181 @@ +/**************************************************************************** +** +** Copyright (C) 2015 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the QtQml module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL21$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see http://www.qt.io/terms-conditions. For further +** information use the contact form at http://www.qt.io/contact-us. +** +** 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 or version 3 as published by the Free +** Software Foundation and appearing in the file LICENSE.LGPLv21 and +** LICENSE.LGPLv3 included in the packaging of this file. Please review the +** following information to ensure the GNU Lesser General Public License +** requirements will be met: https://www.gnu.org/licenses/lgpl.html and +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** As a special exception, The Qt Company gives you certain additional +** rights. These rights are described in The Qt Company LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qqmlwatcher.h" + +#include "qqmlexpression.h" +#include "qqmlcontext.h" +#include "qqml.h" + +#include <private/qqmldebugservice_p.h> +#include <private/qqmlproperty_p.h> +#include <private/qqmlvaluetype_p.h> + +#include <QtCore/qmetaobject.h> +#include <QtCore/qdebug.h> + +QT_BEGIN_NAMESPACE + + +class QQmlWatchProxy : public QObject +{ + Q_OBJECT +public: + QQmlWatchProxy(int id, + QObject *object, + int debugId, + const QMetaProperty &prop, + QQmlWatcher *parent = 0); + + QQmlWatchProxy(int id, + QQmlExpression *exp, + int debugId, + QQmlWatcher *parent = 0); + +public slots: + void notifyValueChanged(); + +private: + friend class QQmlWatcher; + int m_id; + QQmlWatcher *m_watch; + QObject *m_object; + int m_debugId; + QMetaProperty m_property; + + QQmlExpression *m_expr; +}; + +QQmlWatchProxy::QQmlWatchProxy(int id, + QQmlExpression *exp, + int debugId, + QQmlWatcher *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())); +} + +QQmlWatchProxy::QQmlWatchProxy(int id, + QObject *object, + int debugId, + const QMetaProperty &prop, + QQmlWatcher *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 = QQmlWatchProxy::staticMetaObject.indexOfMethod("notifyValueChanged()"); + + if (prop.hasNotifySignal()) + QQmlPropertyPrivate::connect(m_object, prop.notifySignalIndex(), this, refreshIdx); +} + +void QQmlWatchProxy::notifyValueChanged() +{ + QVariant v; + if (m_expr) + v = m_expr->evaluate(); + else if (QQmlValueTypeFactory::isValueType(m_property.userType())) + v = m_property.read(m_object); + + emit m_watch->propertyChanged(m_id, m_debugId, m_property, v); +} + + +QQmlWatcher::QQmlWatcher(QObject *parent) + : QObject(parent) +{ +} + +bool QQmlWatcher::addWatch(int id, quint32 debugId) +{ + QObject *object = QQmlDebugService::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 QQmlWatcher::addWatch(int id, quint32 debugId, const QByteArray &property) +{ + QObject *object = QQmlDebugService::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 QQmlWatcher::addWatch(int id, quint32 objectId, const QString &expr) +{ + QObject *object = QQmlDebugService::objectForId(objectId); + QQmlContext *context = qmlContext(object); + if (context) { + QQmlExpression *exprObj = new QQmlExpression(context, object, expr); + exprObj->setNotifyOnValueChanged(true); + QQmlWatchProxy *proxy = new QQmlWatchProxy(id, exprObj, objectId, this); + exprObj->setParent(proxy); + m_proxies[id].append(proxy); + proxy->notifyValueChanged(); + return true; + } + return false; +} + +bool QQmlWatcher::removeWatch(int id) +{ + if (!m_proxies.contains(id)) + return false; + + QList<QPointer<QQmlWatchProxy> > proxies = m_proxies.take(id); + qDeleteAll(proxies); + return true; +} + +void QQmlWatcher::addPropertyWatch(int id, QObject *object, quint32 debugId, const QMetaProperty &property) +{ + QQmlWatchProxy *proxy = new QQmlWatchProxy(id, object, debugId, property, this); + m_proxies[id].append(proxy); + + proxy->notifyValueChanged(); +} + +QT_END_NAMESPACE + +#include <qqmlwatcher.moc> |