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Diffstat (limited to 'src/declarative/qml/qdeclarativeinclude.cpp')
| -rw-r--r-- | src/declarative/qml/qdeclarativeinclude.cpp | 310 |
1 files changed, 310 insertions, 0 deletions
diff --git a/src/declarative/qml/qdeclarativeinclude.cpp b/src/declarative/qml/qdeclarativeinclude.cpp new file mode 100644 index 0000000000..7102209126 --- /dev/null +++ b/src/declarative/qml/qdeclarativeinclude.cpp @@ -0,0 +1,310 @@ +/**************************************************************************** +** +** Copyright (C) 2011 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 "qdeclarativeinclude_p.h" + +#include <QtScript/qscriptengine.h> +#include <QtNetwork/qnetworkrequest.h> +#include <QtNetwork/qnetworkreply.h> +#include <QtCore/qfile.h> + +#include <private/qdeclarativeengine_p.h> +#include <private/qdeclarativeglobalscriptclass_p.h> + +QT_BEGIN_NAMESPACE + +QDeclarativeInclude::QDeclarativeInclude(const QUrl &url, + QDeclarativeEngine *engine, + QScriptContext *ctxt) +: QObject(engine), m_engine(engine), m_network(0), m_reply(0), m_url(url), m_redirectCount(0) +{ + QDeclarativeEnginePrivate *ep = QDeclarativeEnginePrivate::get(engine); + m_context = ep->contextClass->contextFromValue(QScriptDeclarativeClass::scopeChainValue(ctxt, -3)); + + m_scope[0] = QScriptDeclarativeClass::scopeChainValue(ctxt, -4); + m_scope[1] = QScriptDeclarativeClass::scopeChainValue(ctxt, -5); + + m_scriptEngine = QDeclarativeEnginePrivate::getScriptEngine(engine); + m_network = QDeclarativeScriptEngine::get(m_scriptEngine)->networkAccessManager(); + + m_result = resultValue(m_scriptEngine); + + QNetworkRequest request; + request.setUrl(url); + + m_reply = m_network->get(request); + QObject::connect(m_reply, SIGNAL(finished()), this, SLOT(finished())); +} + +QDeclarativeInclude::~QDeclarativeInclude() +{ + delete m_reply; +} + +QScriptValue QDeclarativeInclude::resultValue(QScriptEngine *engine, Status status) +{ + QScriptValue result = engine->newObject(); + result.setProperty(QLatin1String("OK"), QScriptValue(engine, Ok)); + result.setProperty(QLatin1String("LOADING"), QScriptValue(engine, Loading)); + result.setProperty(QLatin1String("NETWORK_ERROR"), QScriptValue(engine, NetworkError)); + result.setProperty(QLatin1String("EXCEPTION"), QScriptValue(engine, Exception)); + + result.setProperty(QLatin1String("status"), QScriptValue(engine, status)); + return result; +} + +QScriptValue QDeclarativeInclude::result() const +{ + return m_result; +} + +void QDeclarativeInclude::setCallback(const QScriptValue &c) +{ + m_callback = c; +} + +QScriptValue QDeclarativeInclude::callback() const +{ + return m_callback; +} + +#define INCLUDE_MAXIMUM_REDIRECT_RECURSION 15 +void QDeclarativeInclude::finished() +{ + m_redirectCount++; + + if (m_redirectCount < INCLUDE_MAXIMUM_REDIRECT_RECURSION) { + QVariant redirect = m_reply->attribute(QNetworkRequest::RedirectionTargetAttribute); + if (redirect.isValid()) { + m_url = m_url.resolved(redirect.toUrl()); + delete m_reply; + + QNetworkRequest request; + request.setUrl(m_url); + + m_reply = m_network->get(request); + QObject::connect(m_reply, SIGNAL(finished()), this, SLOT(finished())); + return; + } + } + + if (m_reply->error() == QNetworkReply::NoError) { + QDeclarativeEnginePrivate *ep = QDeclarativeEnginePrivate::get(m_engine); + + QByteArray data = m_reply->readAll(); + + QString code = QString::fromUtf8(data); + + QString urlString = m_url.toString(); + QScriptContext *scriptContext = QScriptDeclarativeClass::pushCleanContext(m_scriptEngine); + scriptContext->pushScope(ep->contextClass->newUrlContext(m_context, 0, urlString)); + scriptContext->pushScope(m_scope[0]); + + scriptContext->pushScope(m_scope[1]); + scriptContext->setActivationObject(m_scope[1]); + QDeclarativeScriptParser::extractPragmas(code); + + m_scriptEngine->evaluate(code, urlString, 1); + + m_scriptEngine->popContext(); + + if (m_scriptEngine->hasUncaughtException()) { + m_result.setProperty(QLatin1String("status"), QScriptValue(m_scriptEngine, Exception)); + m_result.setProperty(QLatin1String("exception"), m_scriptEngine->uncaughtException()); + m_scriptEngine->clearExceptions(); + } else { + m_result.setProperty(QLatin1String("status"), QScriptValue(m_scriptEngine, Ok)); + } + } else { + m_result.setProperty(QLatin1String("status"), QScriptValue(m_scriptEngine, NetworkError)); + } + + callback(m_scriptEngine, m_callback, m_result); + + disconnect(); + deleteLater(); +} + +void QDeclarativeInclude::callback(QScriptEngine *engine, QScriptValue &callback, QScriptValue &status) +{ + if (callback.isValid()) { + QScriptValue args = engine->newArray(1); + args.setProperty(0, status); + callback.call(QScriptValue(), args); + } +} + +/* + Documented in qdeclarativeengine.cpp +*/ +QScriptValue QDeclarativeInclude::include(QScriptContext *ctxt, QScriptEngine *engine) +{ + if (ctxt->argumentCount() == 0) + return engine->undefinedValue(); + + QDeclarativeEnginePrivate *ep = QDeclarativeEnginePrivate::get(engine); + + QUrl contextUrl = ep->contextClass->urlFromValue(QScriptDeclarativeClass::scopeChainValue(ctxt, -3)); + if (contextUrl.isEmpty()) + return ctxt->throwError(QLatin1String("Qt.include(): Can only be called from JavaScript files")); + + QString urlString = ctxt->argument(0).toString(); + QUrl url(urlString); + if (url.isRelative()) { + url = QUrl(contextUrl).resolved(url); + urlString = url.toString(); + } + + QString localFile = QDeclarativeEnginePrivate::urlToLocalFileOrQrc(url); + + QScriptValue func = ctxt->argument(1); + if (!func.isFunction()) + func = QScriptValue(); + + QScriptValue result; + if (localFile.isEmpty()) { + QDeclarativeInclude *i = + new QDeclarativeInclude(url, QDeclarativeEnginePrivate::getEngine(engine), ctxt); + + if (func.isValid()) + i->setCallback(func); + + result = i->result(); + } else { + + QFile f(localFile); + if (f.open(QIODevice::ReadOnly)) { + QByteArray data = f.readAll(); + QString code = QString::fromUtf8(data); + + QDeclarativeContextData *context = + ep->contextClass->contextFromValue(QScriptDeclarativeClass::scopeChainValue(ctxt, -3)); + + QScriptContext *scriptContext = QScriptDeclarativeClass::pushCleanContext(engine); + scriptContext->pushScope(ep->contextClass->newUrlContext(context, 0, urlString)); + scriptContext->pushScope(ep->globalClass->staticGlobalObject()); + QScriptValue scope = QScriptDeclarativeClass::scopeChainValue(ctxt, -5); + scriptContext->pushScope(scope); + scriptContext->setActivationObject(scope); + QDeclarativeScriptParser::extractPragmas(code); + + engine->evaluate(code, urlString, 1); + + engine->popContext(); + + if (engine->hasUncaughtException()) { + result = resultValue(engine, Exception); + result.setProperty(QLatin1String("exception"), engine->uncaughtException()); + engine->clearExceptions(); + } else { + result = resultValue(engine, Ok); + } + callback(engine, func, result); + } else { + result = resultValue(engine, NetworkError); + callback(engine, func, result); + } + } + + return result; +} + +QScriptValue QDeclarativeInclude::worker_include(QScriptContext *ctxt, QScriptEngine *engine) +{ + if (ctxt->argumentCount() == 0) + return engine->undefinedValue(); + + QString urlString = ctxt->argument(0).toString(); + QUrl url(ctxt->argument(0).toString()); + if (url.isRelative()) { + QString contextUrl = QScriptDeclarativeClass::scopeChainValue(ctxt, -3).data().toString(); + Q_ASSERT(!contextUrl.isEmpty()); + + url = QUrl(contextUrl).resolved(url); + urlString = url.toString(); + } + + QString localFile = QDeclarativeEnginePrivate::urlToLocalFileOrQrc(url); + + QScriptValue func = ctxt->argument(1); + if (!func.isFunction()) + func = QScriptValue(); + + QScriptValue result; + if (!localFile.isEmpty()) { + + QFile f(localFile); + if (f.open(QIODevice::ReadOnly)) { + QByteArray data = f.readAll(); + QString code = QString::fromUtf8(data); + + QScriptContext *scriptContext = QScriptDeclarativeClass::pushCleanContext(engine); + QScriptValue urlContext = engine->newObject(); + urlContext.setData(QScriptValue(engine, urlString)); + scriptContext->pushScope(urlContext); + + QScriptValue scope = QScriptDeclarativeClass::scopeChainValue(ctxt, -4); + scriptContext->pushScope(scope); + scriptContext->setActivationObject(scope); + QDeclarativeScriptParser::extractPragmas(code); + + engine->evaluate(code, urlString, 1); + + engine->popContext(); + + if (engine->hasUncaughtException()) { + result = resultValue(engine, Exception); + result.setProperty(QLatin1String("exception"), engine->uncaughtException()); + engine->clearExceptions(); + } else { + result = resultValue(engine, Ok); + } + callback(engine, func, result); + } else { + result = resultValue(engine, NetworkError); + callback(engine, func, result); + } + } + + return result; +} + +QT_END_NAMESPACE |