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-rw-r--r--src/qml/qml/v8/qv8include.cpp244
1 files changed, 244 insertions, 0 deletions
diff --git a/src/qml/qml/v8/qv8include.cpp b/src/qml/qml/v8/qv8include.cpp
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+++ b/src/qml/qml/v8/qv8include.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the QtQml module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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.
+**
+** 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qv8include_p.h"
+
+#include <QtQml/qjsengine.h>
+#include <QtNetwork/qnetworkrequest.h>
+#include <QtNetwork/qnetworkreply.h>
+#include <QtCore/qfile.h>
+
+#include <private/qqmlengine_p.h>
+
+QT_BEGIN_NAMESPACE
+
+QV8Include::QV8Include(const QUrl &url, QV8Engine *engine, QQmlContextData *context,
+ v8::Handle<v8::Object> qmlglobal, v8::Handle<v8::Function> callback)
+: m_engine(engine), m_network(0), m_reply(0), m_url(url), m_redirectCount(0), m_context(context)
+{
+ m_qmlglobal = qPersistentNew<v8::Object>(qmlglobal);
+ if (!callback.IsEmpty())
+ m_callbackFunction = qPersistentNew<v8::Function>(callback);
+
+ m_resultObject = qPersistentNew<v8::Object>(resultValue());
+
+ m_network = engine->networkAccessManager();
+
+ QNetworkRequest request;
+ request.setUrl(url);
+
+ m_reply = m_network->get(request);
+ QObject::connect(m_reply, SIGNAL(finished()), this, SLOT(finished()));
+}
+
+QV8Include::~QV8Include()
+{
+ delete m_reply; m_reply = 0;
+ qPersistentDispose(m_callbackFunction);
+ qPersistentDispose(m_resultObject);
+}
+
+v8::Local<v8::Object> QV8Include::resultValue(Status status)
+{
+ // XXX It seems inefficient to create this object from scratch each time.
+ v8::Local<v8::Object> result = v8::Object::New();
+ result->Set(v8::String::New("OK"), v8::Integer::New(Ok));
+ result->Set(v8::String::New("LOADING"), v8::Integer::New(Loading));
+ result->Set(v8::String::New("NETWORK_ERROR"), v8::Integer::New(NetworkError));
+ result->Set(v8::String::New("EXCEPTION"), v8::Integer::New(Exception));
+
+ result->Set(v8::String::New("status"), v8::Integer::New(status));
+
+ return result;
+}
+
+void QV8Include::callback(QV8Engine *engine, v8::Handle<v8::Function> callback, v8::Handle<v8::Object> status)
+{
+ if (!callback.IsEmpty()) {
+ v8::Handle<v8::Value> args[] = { status };
+ v8::TryCatch tc;
+ callback->Call(engine->global(), 1, args);
+ }
+}
+
+v8::Handle<v8::Object> QV8Include::result()
+{
+ return m_resultObject;
+}
+
+#define INCLUDE_MAXIMUM_REDIRECT_RECURSION 15
+void QV8Include::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;
+ }
+ }
+
+ v8::HandleScope handle_scope;
+
+ if (m_reply->error() == QNetworkReply::NoError) {
+ QByteArray data = m_reply->readAll();
+
+ QString code = QString::fromUtf8(data);
+ QQmlScript::Parser::extractPragmas(code);
+
+ QQmlContextData *importContext = new QQmlContextData;
+ importContext->isInternal = true;
+ importContext->isJSContext = true;
+ importContext->url = m_url;
+ importContext->isPragmaLibraryContext = m_context->isPragmaLibraryContext;
+ importContext->setParent(m_context, true);
+
+ v8::Context::Scope ctxtscope(m_engine->context());
+ v8::TryCatch try_catch;
+
+ v8::Local<v8::Script> script = m_engine->qmlModeCompile(code, m_url.toString());
+
+ if (!try_catch.HasCaught()) {
+ m_engine->contextWrapper()->addSubContext(m_qmlglobal, script, importContext);
+ script->Run(m_qmlglobal);
+ }
+
+ if (try_catch.HasCaught()) {
+ m_resultObject->Set(v8::String::New("status"), v8::Integer::New(Exception));
+ m_resultObject->Set(v8::String::New("exception"), try_catch.Exception());
+ } else {
+ m_resultObject->Set(v8::String::New("status"), v8::Integer::New(Ok));
+ }
+ } else {
+ m_resultObject->Set(v8::String::New("status"), v8::Integer::New(NetworkError));
+ }
+
+ callback(m_engine, m_callbackFunction, m_resultObject);
+
+ disconnect();
+ deleteLater();
+}
+
+/*
+ Documented in qv8engine.cpp
+*/
+v8::Handle<v8::Value> QV8Include::include(const v8::Arguments &args)
+{
+ if (args.Length() == 0)
+ return v8::Undefined();
+
+ QV8Engine *engine = V8ENGINE();
+ QQmlContextData *context = engine->callingContext();
+
+ if (!context || !context->isJSContext)
+ V8THROW_ERROR("Qt.include(): Can only be called from JavaScript files");
+
+ QUrl url(context->resolvedUrl(QUrl(engine->toString(args[0]->ToString()))));
+
+ v8::Local<v8::Function> callbackFunction;
+ if (args.Length() >= 2 && args[1]->IsFunction())
+ callbackFunction = v8::Local<v8::Function>::Cast(args[1]);
+
+ QString localFile = QQmlEnginePrivate::urlToLocalFileOrQrc(url);
+
+ v8::Local<v8::Object> result;
+
+ if (localFile.isEmpty()) {
+
+ QV8Include *i = new QV8Include(url, engine, context,
+ v8::Context::GetCallingQmlGlobal(),
+ callbackFunction);
+ result = v8::Local<v8::Object>::New(i->result());
+
+ } else {
+
+ QFile f(localFile);
+
+ if (f.open(QIODevice::ReadOnly)) {
+ QByteArray data = f.readAll();
+ QString code = QString::fromUtf8(data);
+ QQmlScript::Parser::extractPragmas(code);
+
+ QQmlContextData *importContext = new QQmlContextData;
+ importContext->isInternal = true;
+ importContext->isJSContext = true;
+ importContext->url = url;
+ importContext->setParent(context, true);
+
+ v8::TryCatch try_catch;
+
+ v8::Local<v8::Script> script = engine->qmlModeCompile(code, url.toString());
+
+ if (!try_catch.HasCaught()) {
+ v8::Local<v8::Object> qmlglobal = v8::Context::GetCallingQmlGlobal();
+ engine->contextWrapper()->addSubContext(qmlglobal, script, importContext);
+ script->Run(qmlglobal);
+ }
+
+ if (try_catch.HasCaught()) {
+ result = resultValue(Exception);
+ result->Set(v8::String::New("exception"), try_catch.Exception());
+ } else {
+ result = resultValue(Ok);
+ }
+
+ } else {
+ result = resultValue(NetworkError);
+ }
+
+ callback(engine, callbackFunction, result);
+ }
+
+ if (result.IsEmpty())
+ return v8::Undefined();
+ else
+ return result;
+}
+
+QT_END_NAMESPACE
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