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3 ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
4 ** Contact: http://www.qt-project.org/
6 ** This file is part of the QtDeclarative module of the Qt Toolkit.
8 ** $QT_BEGIN_LICENSE:LGPL$
9 ** GNU Lesser General Public License Usage
10 ** This file may be used under the terms of the GNU Lesser General Public
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12 ** appearing in the file LICENSE.LGPL included in the packaging of this
13 ** file. Please review the following information to ensure the GNU Lesser
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21 ** GNU General Public License Usage
22 ** Alternatively, this file may be used under the terms of the GNU General
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25 ** file. Please review the following information to ensure the GNU General
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40 ****************************************************************************/
42 #include "qv8contextwrapper_p.h"
43 #include "qv8engine_p.h"
45 #include <private/qdeclarativeengine_p.h>
46 #include <private/qdeclarativecontext_p.h>
48 #include <private/qjsvalue_p.h>
49 #include <private/qscript_impl_p.h>
53 class QV8TypeResource : public QV8ObjectResource
55 V8_RESOURCE_TYPE(TypeType);
58 QV8TypeResource(QV8Engine *engine);
59 virtual ~QV8TypeResource();
61 QV8TypeWrapper::TypeNameMode mode;
63 QDeclarativeGuard<QObject> object;
65 QDeclarativeType *type;
66 QDeclarativeTypeNameCache *typeNamespace;
67 const void *importNamespace;
70 QV8TypeResource::QV8TypeResource(QV8Engine *engine)
71 : QV8ObjectResource(engine), mode(QV8TypeWrapper::IncludeEnums), type(0), typeNamespace(0), importNamespace(0)
75 QV8TypeResource::~QV8TypeResource()
77 if (typeNamespace) typeNamespace->release();
80 QV8TypeWrapper::QV8TypeWrapper()
85 QV8TypeWrapper::~QV8TypeWrapper()
89 void QV8TypeWrapper::destroy()
91 qPersistentDispose(m_constructor);
94 void QV8TypeWrapper::init(QV8Engine *engine)
97 v8::Local<v8::FunctionTemplate> ft = v8::FunctionTemplate::New();
98 ft->InstanceTemplate()->SetNamedPropertyHandler(Getter, Setter);
99 ft->InstanceTemplate()->SetHasExternalResource(true);
100 m_constructor = qPersistentNew<v8::Function>(ft->GetFunction());
103 // Returns a type wrapper for type t on o. This allows access of enums, and attached properties.
104 v8::Local<v8::Object> QV8TypeWrapper::newObject(QObject *o, QDeclarativeType *t, TypeNameMode mode)
107 // XXX NewInstance() should be optimized
108 v8::Local<v8::Object> rv = m_constructor->NewInstance();
109 QV8TypeResource *r = new QV8TypeResource(m_engine);
110 r->mode = mode; r->object = o; r->type = t;
111 rv->SetExternalResource(r);
115 // Returns a type wrapper for importNamespace (of t) on o. This allows nested resolution of a type in a
117 v8::Local<v8::Object> QV8TypeWrapper::newObject(QObject *o, QDeclarativeTypeNameCache *t,
118 const void *importNamespace, TypeNameMode mode)
121 Q_ASSERT(importNamespace);
122 // XXX NewInstance() should be optimized
123 v8::Local<v8::Object> rv = m_constructor->NewInstance();
124 QV8TypeResource *r = new QV8TypeResource(m_engine);
126 r->mode = mode; r->object = o; r->typeNamespace = t; r->importNamespace = importNamespace;
127 rv->SetExternalResource(r);
131 QVariant QV8TypeWrapper::toVariant(QV8ObjectResource *r)
133 Q_ASSERT(r->resourceType() == QV8ObjectResource::TypeType);
134 QV8TypeResource *resource = static_cast<QV8TypeResource *>(r);
135 QV8Engine *v8engine = resource->engine;
137 if (resource->typeNamespace) {
138 if (QDeclarativeMetaType::ModuleApiInstance *moduleApi = resource->typeNamespace->moduleApi(resource->importNamespace)) {
139 if (moduleApi->scriptCallback) {
140 moduleApi->scriptApi = moduleApi->scriptCallback(v8engine->engine(), v8engine->engine());
141 moduleApi->scriptCallback = 0;
142 moduleApi->qobjectCallback = 0;
143 } else if (moduleApi->qobjectCallback) {
144 moduleApi->qobjectApi = moduleApi->qobjectCallback(v8engine->engine(), v8engine->engine());
145 moduleApi->scriptCallback = 0;
146 moduleApi->qobjectCallback = 0;
149 if (moduleApi->qobjectApi) {
150 return QVariant::fromValue<QObject*>(moduleApi->qobjectApi);
155 // only QObject Module API can be converted to a variant.
159 v8::Handle<v8::Value> QV8TypeWrapper::Getter(v8::Local<v8::String> property,
160 const v8::AccessorInfo &info)
162 QV8TypeResource *resource = v8_resource_cast<QV8TypeResource>(info.This());
165 return v8::Undefined();
167 QV8Engine *v8engine = resource->engine;
168 QObject *object = resource->object;
170 QHashedV8String propertystring(property);
172 if (resource->type) {
173 QDeclarativeType *type = resource->type;
175 if (QV8Engine::startsWithUpper(property)) {
176 int value = type->enumValue(propertystring);
178 return v8::Integer::New(value);
180 // Fall through to return empty handle
182 } else if (resource->object) {
183 QObject *ao = qmlAttachedPropertiesObjectById(type->attachedPropertiesId(), object);
185 return v8engine->qobjectWrapper()->getProperty(ao, propertystring,
186 QV8QObjectWrapper::IgnoreRevision);
188 // Fall through to return empty handle
191 // Fall through to return empty handle
193 } else if (resource->typeNamespace) {
194 Q_ASSERT(resource->importNamespace);
195 QDeclarativeTypeNameCache::Result r = resource->typeNamespace->query(propertystring,
196 resource->importNamespace);
200 return v8engine->typeWrapper()->newObject(object, r.type, resource->mode);
201 } else if (r.scriptIndex != -1) {
202 int index = r.scriptIndex;
203 QDeclarativeContextData *context = v8engine->callingContext();
204 if (index < context->importedScripts.count())
205 return context->importedScripts.at(index);
208 return v8::Undefined();
209 } else if (QDeclarativeMetaType::ModuleApiInstance *moduleApi = resource->typeNamespace->moduleApi(resource->importNamespace)) {
211 if (moduleApi->scriptCallback) {
212 moduleApi->scriptApi = moduleApi->scriptCallback(v8engine->engine(), v8engine->engine());
213 moduleApi->scriptCallback = 0;
214 moduleApi->qobjectCallback = 0;
215 } else if (moduleApi->qobjectCallback) {
216 moduleApi->qobjectApi = moduleApi->qobjectCallback(v8engine->engine(), v8engine->engine());
217 moduleApi->scriptCallback = 0;
218 moduleApi->qobjectCallback = 0;
221 if (moduleApi->qobjectApi) {
222 // check for enum value
223 if (QV8Engine::startsWithUpper(property)) {
224 if (resource->mode == IncludeEnums) {
225 QString name = v8engine->toString(property);
228 QByteArray enumName = name.toUtf8();
229 const QMetaObject *metaObject = moduleApi->qobjectApi->metaObject();
230 for (int ii = metaObject->enumeratorCount() - 1; ii >= 0; --ii) {
231 QMetaEnum e = metaObject->enumerator(ii);
233 int value = e.keyToValue(enumName.constData(), &ok);
235 return v8::Integer::New(value);
240 // check for property.
241 v8::Handle<v8::Value> rv = v8engine->qobjectWrapper()->getProperty(moduleApi->qobjectApi, propertystring, QV8QObjectWrapper::IgnoreRevision);
243 } else if (moduleApi->scriptApi.isValid()) {
244 // NOTE: if used in a binding, changes will not trigger re-evaluation since non-NOTIFYable.
245 QJSValuePrivate *apiprivate = QJSValuePrivate::get(moduleApi->scriptApi);
246 QScopedPointer<QJSValuePrivate> propertyValue(apiprivate->property(property).give());
247 return propertyValue->asV8Value(v8engine);
249 return v8::Handle<v8::Value>();
253 // Fall through to return empty handle
256 Q_ASSERT(!"Unreachable");
259 return v8::Handle<v8::Value>();
262 v8::Handle<v8::Value> QV8TypeWrapper::Setter(v8::Local<v8::String> property,
263 v8::Local<v8::Value> value,
264 const v8::AccessorInfo &info)
266 QV8TypeResource *resource = v8_resource_cast<QV8TypeResource>(info.This());
271 QV8Engine *v8engine = resource->engine;
273 QHashedV8String propertystring(property);
275 if (resource->type && resource->object) {
276 QDeclarativeType *type = resource->type;
277 QObject *object = resource->object;
278 QObject *ao = qmlAttachedPropertiesObjectById(type->attachedPropertiesId(), object);
280 v8engine->qobjectWrapper()->setProperty(ao, propertystring, value,
281 QV8QObjectWrapper::IgnoreRevision);
282 } else if (resource->typeNamespace) {
283 if (QDeclarativeMetaType::ModuleApiInstance *moduleApi = resource->typeNamespace->moduleApi(resource->importNamespace)) {
284 if (moduleApi->scriptCallback) {
285 moduleApi->scriptApi = moduleApi->scriptCallback(v8engine->engine(), v8engine->engine());
286 moduleApi->scriptCallback = 0;
287 moduleApi->qobjectCallback = 0;
288 } else if (moduleApi->qobjectCallback) {
289 moduleApi->qobjectApi = moduleApi->qobjectCallback(v8engine->engine(), v8engine->engine());
290 moduleApi->scriptCallback = 0;
291 moduleApi->qobjectCallback = 0;
294 if (moduleApi->qobjectApi) {
295 v8engine->qobjectWrapper()->setProperty(moduleApi->qobjectApi, propertystring, value,
296 QV8QObjectWrapper::IgnoreRevision);
297 } else if (moduleApi->scriptApi.isValid()) {
298 QScopedPointer<QJSValuePrivate> setvalp(new QJSValuePrivate(v8engine, value));
299 QJSValuePrivate *apiprivate = QJSValuePrivate::get(moduleApi->scriptApi);
300 if (apiprivate->propertyFlags(property) & QJSValue::ReadOnly) {
301 QString error = QLatin1String("Cannot assign to read-only property \"") +
302 v8engine->toString(property) + QLatin1Char('\"');
303 v8::ThrowException(v8::Exception::Error(v8engine->toString(error)));
305 apiprivate->setProperty(property, setvalp.data());