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Diffstat (limited to 'src/declarative/qml/qmlcontextscriptclass.cpp')
| -rw-r--r-- | src/declarative/qml/qmlcontextscriptclass.cpp | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/src/declarative/qml/qmlcontextscriptclass.cpp b/src/declarative/qml/qmlcontextscriptclass.cpp new file mode 100644 index 0000000..6d2c58c --- /dev/null +++ b/src/declarative/qml/qmlcontextscriptclass.cpp @@ -0,0 +1,211 @@ +/**************************************************************************** +** +** 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 "qmlcontextscriptclass_p.h" +#include <private/qmlengine_p.h> +#include <private/qmlcontext_p.h> +#include <private/qmltypenamescriptclass_p.h> + +QT_BEGIN_NAMESPACE + +struct ContextData : public QScriptDeclarativeClass::Object { + ContextData(QmlContext *c) : context(c) {} + QGuard<QmlContext> context; +}; + +/* + The QmlContextScriptClass handles property access for a QmlContext + via QtScript. + */ +QmlContextScriptClass::QmlContextScriptClass(QmlEngine *bindEngine) +: QScriptDeclarativeClass(QmlEnginePrivate::getScriptEngine(bindEngine)), engine(bindEngine), + lastData(0), lastPropertyIndex(-1), lastDefaultObject(-1) +{ +} + +QmlContextScriptClass::~QmlContextScriptClass() +{ +} + +QScriptValue QmlContextScriptClass::newContext(QmlContext *context) +{ + QScriptEngine *scriptEngine = QmlEnginePrivate::getScriptEngine(engine); + + return newObject(scriptEngine, this, new ContextData(context)); +} + +QmlContext *QmlContextScriptClass::contextFromValue(const QScriptValue &v) +{ + if (scriptClass(v) != this) + return 0; + + ContextData *data = (ContextData *)object(v); + return data->context; +} + +#include <QDebug> +QScriptClass::QueryFlags +QmlContextScriptClass::queryProperty(Object *object, const Identifier &name, + QScriptClass::QueryFlags flags) +{ + Q_UNUSED(flags); + + lastContext = 0; + lastData = 0; + lastPropertyIndex = -1; + lastDefaultObject = -1; + + QmlContext *bindContext = ((ContextData *)object)->context.data(); + if (!bindContext) + return 0; + + while (bindContext) { + QScriptClass::QueryFlags rv = queryProperty(bindContext, name, flags); + if (rv) return rv; + bindContext = bindContext->parentContext(); + } + + return 0; +} + +QScriptClass::QueryFlags +QmlContextScriptClass::queryProperty(QmlContext *bindContext, const Identifier &name, + QScriptClass::QueryFlags flags) +{ + 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 (cp->imports) { + QmlTypeNameCache::Data *data = cp->imports->data(name); + + if (data) { + lastData = data; + lastContext = bindContext; + return QScriptClass::HandlesReadAccess; + } + } + + for (int ii = 0; ii < cp->defaultObjects.count(); ++ii) { + QScriptClass::QueryFlags rv = + ep->objectClass->queryProperty(cp->defaultObjects.at(ii), name, flags, 0); + + if (rv) { + lastDefaultObject = ii; + lastContext = bindContext; + return rv; + } + } + + 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; + } + } + return 0; +} + +QScriptValue 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); + + + if (lastData) { + + if (lastData->type) + return ep->typeNameClass->newObject(cp->defaultObjects.at(0), lastData->type); + else + return 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 rv; + } else if(lastDefaultObject != -1) { + + // Default object property + return ep->objectClass->property(cp->defaultObjects.at(lastDefaultObject), name); + + } else { + + return lastFunction; + + } +} + +void QmlContextScriptClass::setProperty(Object *object, const Identifier &name, + const QScriptValue &value) +{ + Q_ASSERT(lastDefaultObject != -1); + + QmlContext *bindContext = lastContext; + Q_ASSERT(bindContext); + + QmlEnginePrivate *ep = QmlEnginePrivate::get(engine); + QmlContextPrivate *cp = QmlContextPrivate::get(bindContext); + + ep->objectClass->setProperty(cp->defaultObjects.at(lastDefaultObject), name, value); +} + +QT_END_NAMESPACE |