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Diffstat (limited to 'src/declarative/qml/v8/qv8engine_p.h')
| -rw-r--r-- | src/declarative/qml/v8/qv8engine_p.h | 348 |
1 files changed, 348 insertions, 0 deletions
diff --git a/src/declarative/qml/v8/qv8engine_p.h b/src/declarative/qml/v8/qv8engine_p.h new file mode 100644 index 0000000000..d4b8730dc7 --- /dev/null +++ b/src/declarative/qml/v8/qv8engine_p.h @@ -0,0 +1,348 @@ +/**************************************************************************** +** +** 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. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QDECLARATIVEV8ENGINE_P_H +#define QDECLARATIVEV8ENGINE_P_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists purely as an +// implementation detail. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// + +#include <QtCore/qglobal.h> +#include <QtCore/qvariant.h> +#include <QtCore/qset.h> +#include <private/qv8_p.h> + +#include <private/qdeclarativepropertycache_p.h> + +#include "qv8contextwrapper_p.h" +#include "qv8qobjectwrapper_p.h" +#include "qv8stringwrapper_p.h" +#include "qv8typewrapper_p.h" +#include "qv8listwrapper_p.h" +#include "qv8variantwrapper_p.h" +#include "qv8valuetypewrapper_p.h" + +QT_BEGIN_NAMESPACE + +#define V8_RESOURCE_TYPE(resourcetype) \ +public: \ + enum { V8ResourceType = QV8ObjectResource:: resourcetype }; \ + virtual QV8ObjectResource::ResourceType resourceType() const { return QV8ObjectResource:: resourcetype; } \ +private: + +#define V8ENGINE() ((QV8Engine *)v8::External::Unwrap(args.Data())) +#define V8FUNCTION(function, engine) v8::FunctionTemplate::New(function, v8::External::Wrap((QV8Engine*)engine))->GetFunction() +// XXX Are we mean to return a value here, or is an empty handle ok? +#define V8THROW_ERROR(string) { \ + v8::ThrowException(v8::Exception::Error(v8::String::New(string))); \ + return v8::Handle<v8::Value>(); \ +} + +class QV8Engine; +class QV8ObjectResource : public v8::Object::ExternalResource +{ +public: + QV8ObjectResource(QV8Engine *engine) : engine(engine) { Q_ASSERT(engine); } + enum ResourceType { ContextType, QObjectType, TypeType, ListType, VariantType, + ValueTypeType, XMLHttpRequestType, DOMNodeType, SQLDatabaseType }; + virtual ResourceType resourceType() const = 0; + + QV8Engine *engine; +}; + +template<class T> +T *v8_resource_cast(v8::Handle<v8::Object> object) { + QV8ObjectResource *resource = static_cast<QV8ObjectResource *>(object->GetExternalResource()); + return (resource && (quint32)resource->resourceType() == (quint32)T::V8ResourceType)?static_cast<T *>(resource):0; +} + +// Used to allow a QObject method take and return raw V8 handles without having to expose +// v8 in the public API. +// Use like this: +// class MyClass : public QObject { +// Q_OBJECT +// ... +// Q_INVOKABLE void myMethod(QDeclarativeV8Function*); +// }; +// The QDeclarativeV8Function - and consequently the arguments and return value - only remains +// valid during the call. If the return value isn't set within myMethod(), the will return +// undefined. +class QV8Engine; +class QDeclarativeV8Function +{ +public: + int Length() const { return _ac; } + v8::Local<v8::Value> operator[](int idx) { return (*_a)->Get(idx); } + QDeclarativeContextData *context() { return _c; } + v8::Handle<v8::Object> qmlGlobal() { return *_g; } + void returnValue(v8::Handle<v8::Value> rv) { *_r = rv; } + QV8Engine *engine() const { return _e; } +private: + friend class QV8QObjectWrapper; + QDeclarativeV8Function(); + QDeclarativeV8Function(const QDeclarativeV8Function &); + QDeclarativeV8Function &operator=(const QDeclarativeV8Function &); + + QDeclarativeV8Function(int length, v8::Handle<v8::Object> &args, + v8::Handle<v8::Value> &rv, v8::Handle<v8::Object> &global, + QDeclarativeContextData *c, QV8Engine *e) + : _ac(length), _a(&args), _r(&rv), _g(&global), _c(c), _e(e) {} + + int _ac; + v8::Handle<v8::Object> *_a; + v8::Handle<v8::Value> *_r; + v8::Handle<v8::Object> *_g; + QDeclarativeContextData *_c; + QV8Engine *_e; +}; + +class QDeclarativeV8Handle +{ +public: + QDeclarativeV8Handle() : d(0) {} + QDeclarativeV8Handle(const QDeclarativeV8Handle &other) : d(other.d) {} + QDeclarativeV8Handle &operator=(const QDeclarativeV8Handle &other) { d = other.d; return *this; } + + static QDeclarativeV8Handle fromHandle(v8::Handle<v8::Value> h) { + return reinterpret_cast<QDeclarativeV8Handle &>(h); + } + v8::Handle<v8::Value> toHandle() const { + return reinterpret_cast<const v8::Handle<v8::Value> &>(*this); + } +private: + void *d; +}; + +class QObject; +class QDeclarativeEngine; +class QDeclarativeValueType; +class QNetworkAccessManager; +class QDeclarativeContextData; +class Q_AUTOTEST_EXPORT QV8Engine +{ +public: + QV8Engine(); + ~QV8Engine(); + + void init(QDeclarativeEngine *); + + QDeclarativeEngine *engine() { return m_engine; } + v8::Local<v8::Object> global() { return m_context->Global(); } + v8::Handle<v8::Context> context() { return m_context; } + QV8ContextWrapper *contextWrapper() { return &m_contextWrapper; } + QV8QObjectWrapper *qobjectWrapper() { return &m_qobjectWrapper; } + QV8TypeWrapper *typeWrapper() { return &m_typeWrapper; } + QV8ListWrapper *listWrapper() { return &m_listWrapper; } + QV8VariantWrapper *variantWrapper() { return &m_variantWrapper; } + + void *xmlHttpRequestData() { return m_xmlHttpRequestData; } + void *sqlDatabaseData() { return m_sqlDatabaseData; } + + QDeclarativeContextData *callingContext(); + + v8::Local<v8::Array> getOwnPropertyNames(v8::Handle<v8::Object>); + + inline QString toString(v8::Handle<v8::Value> string); + inline QString toString(v8::Handle<v8::String> string); + static QString toStringStatic(v8::Handle<v8::Value>); + static QString toStringStatic(v8::Handle<v8::String>); + static inline bool startsWithUpper(v8::Handle<v8::String>); + + QVariant toVariant(v8::Handle<v8::Value>, int typeHint); + v8::Handle<v8::Value> fromVariant(const QVariant &); + inline bool isVariant(v8::Handle<v8::Value>); + + // Compile \a source (from \a fileName at \a lineNumber) in QML mode + v8::Local<v8::Script> qmlModeCompile(const QString &source, + const QString &fileName = QString(), + int lineNumber = 1); + + // Return the QML global "scope" object for the \a ctxt context and \a scope object. + inline v8::Local<v8::Object> qmlScope(QDeclarativeContextData *ctxt, QObject *scope); + + // Return a JS wrapper for the given QObject \a object + inline v8::Handle<v8::Value> newQObject(QObject *object); + inline bool isQObject(v8::Handle<v8::Value>); + inline QObject *toQObject(v8::Handle<v8::Value>); + + // Return a JS string for the given QString \a string + inline v8::Local<v8::String> toString(const QString &string); + + // Create a new value type object + inline v8::Handle<v8::Value> newValueType(QObject *, int coreIndex, QDeclarativeValueType *); + inline v8::Handle<v8::Value> newValueType(const QVariant &, QDeclarativeValueType *); + + // Create a new QVariant object. This doesn't examine the type of the variant, but always returns + // a QVariant wrapper + inline v8::Handle<v8::Value> newQVariant(const QVariant &); + + // Return the network access manager for this engine. By default this returns the network + // access manager of the QDeclarativeEngine. It is overridden in the case of a threaded v8 + // instance (like in WorkerScript). + virtual QNetworkAccessManager *networkAccessManager(); + + // Return the list of illegal id names (the names of the properties on the global object) + const QSet<QString> &illegalNames() const; + +private: + QDeclarativeEngine *m_engine; + v8::Persistent<v8::Context> m_context; + + QV8StringWrapper m_stringWrapper; + QV8ContextWrapper m_contextWrapper; + QV8QObjectWrapper m_qobjectWrapper; + QV8TypeWrapper m_typeWrapper; + QV8ListWrapper m_listWrapper; + QV8VariantWrapper m_variantWrapper; + QV8ValueTypeWrapper m_valueTypeWrapper; + + v8::Persistent<v8::Function> m_getOwnPropertyNames; + + void *m_xmlHttpRequestData; + void *m_sqlDatabaseData; + + QSet<QString> m_illegalNames; + + QVariant toBasicVariant(v8::Handle<v8::Value>); + + void initializeGlobal(v8::Handle<v8::Object>); + void freezeGlobal(); + + static v8::Handle<v8::Value> print(const v8::Arguments &args); + static v8::Handle<v8::Value> isQtObject(const v8::Arguments &args); + static v8::Handle<v8::Value> rgba(const v8::Arguments &args); + static v8::Handle<v8::Value> hsla(const v8::Arguments &args); + static v8::Handle<v8::Value> rect(const v8::Arguments &args); + static v8::Handle<v8::Value> point(const v8::Arguments &args); + static v8::Handle<v8::Value> size(const v8::Arguments &args); + static v8::Handle<v8::Value> vector3d(const v8::Arguments &args); + static v8::Handle<v8::Value> lighter(const v8::Arguments &args); + static v8::Handle<v8::Value> darker(const v8::Arguments &args); + static v8::Handle<v8::Value> tint(const v8::Arguments &args); + static v8::Handle<v8::Value> formatDate(const v8::Arguments &args); + static v8::Handle<v8::Value> formatTime(const v8::Arguments &args); + static v8::Handle<v8::Value> formatDateTime(const v8::Arguments &args); + static v8::Handle<v8::Value> openUrlExternally(const v8::Arguments &args); + static v8::Handle<v8::Value> fontFamilies(const v8::Arguments &args); + static v8::Handle<v8::Value> md5(const v8::Arguments &args); + static v8::Handle<v8::Value> btoa(const v8::Arguments &args); + static v8::Handle<v8::Value> atob(const v8::Arguments &args); + static v8::Handle<v8::Value> quit(const v8::Arguments &args); + static v8::Handle<v8::Value> resolvedUrl(const v8::Arguments &args); + static v8::Handle<v8::Value> createQmlObject(const v8::Arguments &args); + static v8::Handle<v8::Value> createComponent(const v8::Arguments &args); + + double qtDateTimeToJsDate(const QDateTime &dt); + QDateTime qtDateTimeFromJsDate(double jsDate); +}; + +QString QV8Engine::toString(v8::Handle<v8::Value> string) +{ + return m_stringWrapper.toString(string->ToString()); +} + +QString QV8Engine::toString(v8::Handle<v8::String> string) +{ + return m_stringWrapper.toString(string); +} + +bool QV8Engine::isVariant(v8::Handle<v8::Value> value) +{ + return m_variantWrapper.isVariant(value); +} + +v8::Local<v8::Object> QV8Engine::qmlScope(QDeclarativeContextData *ctxt, QObject *scope) +{ + return m_contextWrapper.qmlScope(ctxt, scope); +} + +bool QV8Engine::isQObject(v8::Handle<v8::Value> obj) +{ + return obj->IsObject()?m_qobjectWrapper.isQObject(v8::Handle<v8::Object>::Cast(obj)):false; +} + +QObject *QV8Engine::toQObject(v8::Handle<v8::Value> obj) +{ + return obj->IsObject()?m_qobjectWrapper.toQObject(v8::Handle<v8::Object>::Cast(obj)):0; +} + +v8::Handle<v8::Value> QV8Engine::newQObject(QObject *object) +{ + return m_qobjectWrapper.newQObject(object); +} + +v8::Local<v8::String> QV8Engine::toString(const QString &string) +{ + return m_stringWrapper.toString(string); +} + +v8::Handle<v8::Value> QV8Engine::newValueType(QObject *object, int property, QDeclarativeValueType *type) +{ + return m_valueTypeWrapper.newValueType(object, property, type); +} + +v8::Handle<v8::Value> QV8Engine::newValueType(const QVariant &value, QDeclarativeValueType *type) +{ + return m_valueTypeWrapper.newValueType(value, type); +} + +// XXX perf? +bool QV8Engine::startsWithUpper(v8::Handle<v8::String> string) +{ + uint16_t buffer[2]; + int written = string->Write(buffer, 0, 1); + if (written == 0) return false; + uint16_t c = buffer[0]; + return ((c != '_' ) && (!(c >= 'a' && c <= 'z')) && + ((c >= 'A' && c <= 'Z') || QChar::category(c) == QChar::Letter_Uppercase)); +} + +QT_END_NAMESPACE + +#endif // QDECLARATIVEV8ENGINE_P_H |