/*!
Set the \a value of the \a name property on this context.
QDeclarativeContext does \bold not take ownership of \a value.
*/
void QDeclarativeContext::setContextProperty(const QString &name, QObject *value)
{
Q_D(QDeclarativeContext);
if (d->notifyIndex == -1)
d->notifyIndex = this->metaObject()->methodCount();
QDeclarativeContextData *data = d->data;
if (data->isInternal) {
qWarning("QDeclarativeContext: Cannot set property on internal context.");
return;
}
if (!isValid()) {
qWarning("QDeclarativeContext: Cannot set property on invalid context.");
return;
}
if (!data->propertyNames) data->propertyNames = new QDeclarativeIntegerCache(data->engine);
int idx = data->propertyNames->value(name);
if (idx == -1) {
data->propertyNames->add(name, data->idValueCount + d->propertyValues.count());
d->propertyValues.append(QVariant::fromValue(value));
data->refreshExpressions();
} else {
d->propertyValues[idx] = QVariant::fromValue(value);
QMetaObject::activate(this, idx + d->notifyIndex, 0);
}
}
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);
QDeclarativeScriptParser::extractPragmas(code);
QDeclarativeContextData *importContext = new QDeclarativeContextData;
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();
}
QObject * QDeclarativeComponentPrivate::begin(QDeclarativeContextData *parentContext,
QDeclarativeContextData *componentCreationContext,
QDeclarativeCompiledData *component, int start, int count,
ConstructionState *state, QList<QDeclarativeError> *errors)
{
QDeclarativeEnginePrivate *enginePriv = QDeclarativeEnginePrivate::get(parentContext->engine);
bool isRoot = !enginePriv->inBeginCreate;
Q_ASSERT(!isRoot || state); // Either this isn't a root component, or a state data must be provided
Q_ASSERT((state != 0) ^ (errors != 0)); // One of state or errors (but not both) must be provided
QDeclarativeContextData *ctxt = new QDeclarativeContextData;
ctxt->isInternal = true;
ctxt->url = component->url;
ctxt->imports = component->importCache;
// Nested global imports
if (componentCreationContext && start != -1)
ctxt->importedScripts = componentCreationContext->importedScripts;
component->importCache->addref();
ctxt->setParent(parentContext);
enginePriv->inBeginCreate = true;
QDeclarativeVME vme;
QObject *rv = vme.run(ctxt, component, start, count);
if (vme.isError()) {
if(errors) *errors = vme.errors();
else state->errors = vme.errors();
}
if (isRoot) {
enginePriv->inBeginCreate = false;
state->bindValues = enginePriv->bindValues;
state->parserStatus = enginePriv->parserStatus;
state->finalizedParserStatus = enginePriv->finalizedParserStatus;
state->componentAttached = enginePriv->componentAttached;
if (state->componentAttached)
state->componentAttached->prev = &state->componentAttached;
enginePriv->componentAttached = 0;
enginePriv->bindValues.clear();
enginePriv->parserStatus.clear();
enginePriv->finalizedParserStatus.clear();
state->completePending = true;
enginePriv->inProgressCreations++;
}
return rv;
}
/*
Refreshes all expressions that could possibly depend on this context. Refreshing flushes all
context-tree dependent caches in the expressions, and should occur every time the context tree
*structure* (not values) changes.
*/
void QDeclarativeContextData::refreshExpressions()
{
QDeclarativeContextData *child = childContexts;
while (child) {
child->refreshExpressions();
child = child->nextChild;
}
QDeclarativeAbstractExpression *expression = expressions;
while (expression) {
expression->refresh();
expression = expression->m_nextExpression;
}
}
QObject *
QDeclarativeComponentPrivate::beginCreate(QDeclarativeContextData *context, const QBitField &bindings)
{
Q_Q(QDeclarativeComponent);
if (!context) {
qWarning("QDeclarativeComponent: Cannot create a component in a null context");
return 0;
}
if (!context->isValid()) {
qWarning("QDeclarativeComponent: Cannot create a component in an invalid context");
return 0;
}
if (context->engine != engine) {
qWarning("QDeclarativeComponent: Must create component in context from the same QDeclarativeEngine");
return 0;
}
if (state.completePending) {
qWarning("QDeclarativeComponent: Cannot create new component instance before completing the previous");
return 0;
}
if (!q->isReady()) {
qWarning("QDeclarativeComponent: Component is not ready");
return 0;
}
QDeclarativeEnginePrivate *ep = QDeclarativeEnginePrivate::get(engine);
QDeclarativeContextData *ctxt = new QDeclarativeContextData;
ctxt->isInternal = true;
ctxt->url = cc->url;
ctxt->imports = cc->importCache;
// Nested global imports
if (creationContext && start != -1)
ctxt->importedScripts = creationContext->importedScripts;
cc->importCache->addref();
ctxt->setParent(context);
QObject *rv = begin(ctxt, ep, cc, start, count, &state, bindings);
if (rv && !context->isInternal && ep->isDebugging)
context->asQDeclarativeContextPrivate()->instances.append(rv);
return rv;
}
/*!
Returns the QDeclarativeContext this expression is associated with, or 0 if there
is no association or the QDeclarativeContext has been destroyed.
*/
QDeclarativeContext *QDeclarativeExpression::context() const
{
Q_D(const QDeclarativeExpression);
QDeclarativeContextData *data = d->data->context();
return data?data->asQDeclarativeContext():0;
}
/*
Documented in qv8engine.cpp
*/
v8::Handle<v8::Value> QV8Include::include(const v8::Arguments &args)
{
if (args.Length() == 0)
return v8::Undefined();
QV8Engine *engine = V8ENGINE();
QDeclarativeContextData *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 = QDeclarativeEnginePrivate::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);
QDeclarativeScriptParser::extractPragmas(code);
QDeclarativeContextData *importContext = new QDeclarativeContextData;
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;
}