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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qmlcontextscriptclass_p.h"
+
+#include "qmlengine_p.h"
+#include "qmlcontext_p.h"
+#include "qmltypenamescriptclass_p.h"
+#include "qmlguard_p.h"
+
+QT_BEGIN_NAMESPACE
+
+struct ContextData : public QScriptDeclarativeClass::Object {
+ ContextData() : isSharedContext(true) {}
+ ContextData(QmlContext *c, QObject *o) : context(c), scopeObject(o), isSharedContext(false) {}
+ QmlGuard<QmlContext> context;
+ QmlGuard<QObject> scopeObject;
+ bool isSharedContext;
+
+ QmlContext *getContext(QmlEngine *engine) {
+ if (isSharedContext) {
+ return QmlEnginePrivate::get(engine)->sharedContext;
+ } else {
+ return context.data();
+ }
+ }
+
+ QObject *getScope(QmlEngine *engine) {
+ if (isSharedContext) {
+ return QmlEnginePrivate::get(engine)->sharedScope;
+ } else {
+ return scopeObject.data();
+ }
+ }
+};
+
+/*
+ The QmlContextScriptClass handles property access for a QmlContext
+ via QtScript.
+ */
+QmlContextScriptClass::QmlContextScriptClass(QmlEngine *bindEngine)
+: QmlScriptClass(QmlEnginePrivate::getScriptEngine(bindEngine)), engine(bindEngine),
+ lastScopeObject(0), lastContext(0), lastData(0), lastPropertyIndex(-1), lastDefaultObject(-1)
+{
+}
+
+QmlContextScriptClass::~QmlContextScriptClass()
+{
+}
+
+QScriptValue QmlContextScriptClass::newContext(QmlContext *context, QObject *scopeObject)
+{
+ QScriptEngine *scriptEngine = QmlEnginePrivate::getScriptEngine(engine);
+
+ return newObject(scriptEngine, this, new ContextData(context, scopeObject));
+}
+
+QScriptValue QmlContextScriptClass::newSharedContext()
+{
+ QScriptEngine *scriptEngine = QmlEnginePrivate::getScriptEngine(engine);
+
+ return newObject(scriptEngine, this, new ContextData());
+}
+
+QmlContext *QmlContextScriptClass::contextFromValue(const QScriptValue &v)
+{
+ if (scriptClass(v) != this)
+ return 0;
+
+ ContextData *data = (ContextData *)object(v);
+ return data->getContext(engine);
+}
+
+QScriptClass::QueryFlags
+QmlContextScriptClass::queryProperty(Object *object, const Identifier &name,
+ QScriptClass::QueryFlags flags)
+{
+ Q_UNUSED(flags);
+
+ lastScopeObject = 0;
+ lastContext = 0;
+ lastData = 0;
+ lastPropertyIndex = -1;
+ lastDefaultObject = -1;
+
+ QmlContext *bindContext = ((ContextData *)object)->getContext(engine);
+ QObject *scopeObject = ((ContextData *)object)->getScope(engine);
+ if (!bindContext)
+ return 0;
+
+ bool includeTypes = true;
+ while (bindContext) {
+ QScriptClass::QueryFlags rv =
+ queryProperty(bindContext, scopeObject, name, flags, includeTypes);
+ scopeObject = 0; // Only applies to the first context
+ includeTypes = false; // Only applies to the first context
+ if (rv) return rv;
+ bindContext = bindContext->parentContext();
+ }
+
+ return 0;
+}
+
+QScriptClass::QueryFlags
+QmlContextScriptClass::queryProperty(QmlContext *bindContext, QObject *scopeObject,
+ const Identifier &name,
+ QScriptClass::QueryFlags flags,
+ bool includeTypes)
+{
+ QmlEnginePrivate *ep = QmlEnginePrivate::get(engine);
+ QmlContextPrivate *cp = QmlContextPrivate::get(bindContext);
+
+ lastPropertyIndex = cp->propertyNames?cp->propertyNames->value(name):-1;
+ if (lastPropertyIndex != -1) {
+ lastContext = bindContext;
+ return QScriptClass::HandlesReadAccess;
+ }
+
+ if (includeTypes && cp->imports) {
+ QmlTypeNameCache::Data *data = cp->imports->data(name);
+
+ if (data) {
+ lastData = data;
+ lastContext = bindContext;
+ return QScriptClass::HandlesReadAccess;
+ }
+ }
+
+ for (int ii = 0; ii < cp->scripts.count(); ++ii) {
+ lastFunction = QScriptDeclarativeClass::function(cp->scripts.at(ii), name);
+ if (lastFunction.isValid()) {
+ lastContext = bindContext;
+ return QScriptClass::HandlesReadAccess;
+ }
+ }
+
+ if (scopeObject) {
+ QScriptClass::QueryFlags rv =
+ ep->objectClass->queryProperty(scopeObject, name, flags, bindContext,
+ QmlObjectScriptClass::ImplicitObject | QmlObjectScriptClass::SkipAttachedProperties);
+ if (rv) {
+ lastScopeObject = scopeObject;
+ lastContext = bindContext;
+ return rv;
+ }
+ }
+
+ for (int ii = cp->defaultObjects.count() - 1; ii >= 0; --ii) {
+ QScriptClass::QueryFlags rv =
+ ep->objectClass->queryProperty(cp->defaultObjects.at(ii), name, flags, bindContext,
+ QmlObjectScriptClass::ImplicitObject | QmlObjectScriptClass::SkipAttachedProperties);
+
+ if (rv) {
+ lastDefaultObject = ii;
+ lastContext = bindContext;
+ return rv;
+ }
+ }
+
+ return 0;
+}
+
+QmlContextScriptClass::ScriptValue
+QmlContextScriptClass::property(Object *object, const Identifier &name)
+{
+ Q_UNUSED(object);
+
+ QmlContext *bindContext = lastContext;
+ Q_ASSERT(bindContext);
+
+ QmlEnginePrivate *ep = QmlEnginePrivate::get(engine);
+ QmlContextPrivate *cp = QmlContextPrivate::get(bindContext);
+ QScriptEngine *scriptEngine = QmlEnginePrivate::getScriptEngine(engine);
+
+ if (lastScopeObject) {
+
+ return ep->objectClass->property(lastScopeObject, name);
+
+ } else if (lastData) {
+
+ if (lastData->type)
+ return Value(scriptEngine, ep->typeNameClass->newObject(cp->defaultObjects.at(0), lastData->type));
+ else
+ return Value(scriptEngine, ep->typeNameClass->newObject(cp->defaultObjects.at(0), lastData->typeNamespace));
+
+ } else if (lastPropertyIndex != -1) {
+
+ QScriptValue rv;
+ if (lastPropertyIndex < cp->idValueCount) {
+ rv = ep->objectClass->newQObject(cp->idValues[lastPropertyIndex].data());
+ } else {
+ QVariant value = cp->propertyValues.at(lastPropertyIndex);
+ rv = ep->scriptValueFromVariant(value);
+ }
+
+ ep->capturedProperties <<
+ QmlEnginePrivate::CapturedProperty(bindContext, -1, lastPropertyIndex + cp->notifyIndex);
+
+ return Value(scriptEngine, rv);
+ } else if(lastDefaultObject != -1) {
+
+ // Default object property
+ return ep->objectClass->property(cp->defaultObjects.at(lastDefaultObject), name);
+
+ } else {
+
+ return Value(scriptEngine, lastFunction);
+
+ }
+}
+
+void QmlContextScriptClass::setProperty(Object *object, const Identifier &name,
+ const QScriptValue &value)
+{
+ Q_UNUSED(object);
+ Q_ASSERT(lastScopeObject || lastDefaultObject != -1);
+
+ QmlContext *bindContext = lastContext;
+ Q_ASSERT(bindContext);
+
+ QmlEnginePrivate *ep = QmlEnginePrivate::get(engine);
+ QmlContextPrivate *cp = QmlContextPrivate::get(bindContext);
+
+ if (lastScopeObject) {
+ ep->objectClass->setProperty(lastScopeObject, name, value, bindContext);
+ } else {
+ ep->objectClass->setProperty(cp->defaultObjects.at(lastDefaultObject), name, value,
+ bindContext);
+ }
+}
+
+QT_END_NAMESPACE