path: root/src/declarative/qml/qdeclarativeengine_p.h

/****************************************************************************
**
** Copyright (C) 2010 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 QDECLARATIVEENGINE_P_H
#define QDECLARATIVEENGINE_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 "qdeclarativeengine.h"

#include "qdeclarativeclassfactory_p.h"
#include "qdeclarativecompositetypemanager_p.h"
#include "qpodvector_p.h"
#include "qdeclarative.h"
#include "qdeclarativevaluetype_p.h"
#include "qdeclarativecontext.h"
#include "qdeclarativecontext_p.h"
#include "qdeclarativeexpression.h"
#include "qdeclarativeproperty_p.h"
#include "qdeclarativepropertycache_p.h"
#include "qdeclarativeobjectscriptclass_p.h"
#include "qdeclarativecontextscriptclass_p.h"
#include "qdeclarativevaluetypescriptclass_p.h"
#include "qdeclarativemetatype_p.h"
#include "qdeclarativedirparser_p.h"

#include <QtScript/QScriptClass>
#include <QtScript/QScriptValue>
#include <QtScript/QScriptString>
#include <QtCore/qstring.h>
#include <QtCore/qlist.h>
#include <QtCore/qpair.h>
#include <QtCore/qstack.h>
#include <QtCore/qmutex.h>
#include <QtScript/qscriptengine.h>

#include <private/qobject_p.h>

QT_BEGIN_NAMESPACE

class QDeclarativeContext;
class QDeclarativeEngine;
class QDeclarativeContextPrivate;
class QDeclarativeExpression;
class QDeclarativeContextScriptClass;
class QDeclarativeObjectScriptClass;
class QDeclarativeTypeNameScriptClass;
class QDeclarativeValueTypeScriptClass;
class QScriptEngineDebugger;
class QNetworkReply;
class QNetworkAccessManager;
class QDeclarativeNetworkAccessManagerFactory;
class QDeclarativeAbstractBinding;
class QScriptDeclarativeClass;
class QDeclarativeTypeNameScriptClass;
class QDeclarativeTypeNameCache;
class QDeclarativeComponentAttached;
class QDeclarativeListScriptClass;
class QDeclarativeCleanup;
class QDeclarativeDelayedError;
class QDeclarativeWorkerScriptEngine;
class QDeclarativeGlobalScriptClass;
class QDir;

class QDeclarativeScriptEngine : public QScriptEngine
{
public:
    QDeclarativeScriptEngine(QDeclarativeEnginePrivate *priv);
    virtual ~QDeclarativeScriptEngine();

    QUrl resolvedUrl(QScriptContext *context, const QUrl& url); // resolved against p's context, or baseUrl if no p
    static QScriptValue resolvedUrl(QScriptContext *ctxt, QScriptEngine *engine);

    static QDeclarativeScriptEngine *get(QScriptEngine* e) { return static_cast<QDeclarativeScriptEngine*>(e); }

    QDeclarativeEnginePrivate *p;

    // User by SQL API
    QScriptClass *sqlQueryClass;
    QString offlineStoragePath;

    // Used by DOM Core 3 API
    QScriptClass *namedNodeMapClass;
    QScriptClass *nodeListClass;

    QUrl baseUrl;

    virtual QNetworkAccessManager *networkAccessManager();
};

class Q_AUTOTEST_EXPORT QDeclarativeEnginePrivate : public QObjectPrivate
{
    Q_DECLARE_PUBLIC(QDeclarativeEngine)
public:
    QDeclarativeEnginePrivate(QDeclarativeEngine *);
    ~QDeclarativeEnginePrivate();

    void init();

    struct CapturedProperty {
        CapturedProperty(QObject *o, int c, int n)
            : object(o), coreIndex(c), notifier(0), notifyIndex(n) {}
        CapturedProperty(QDeclarativeNotifier *n)
            : object(0), coreIndex(-1), notifier(n), notifyIndex(-1) {}

        QObject *object;
        int coreIndex;
        QDeclarativeNotifier *notifier;
        int notifyIndex;
    };
    bool captureProperties;
    QPODVector<CapturedProperty> capturedProperties;

    QDeclarativeContext *rootContext;
    QDeclarativeExpression *currentExpression;
    bool isDebugging;

    struct ImportedNamespace;
    QDeclarativeContextScriptClass *contextClass;
    QDeclarativeContextData *sharedContext;
    QObject *sharedScope;
    QDeclarativeObjectScriptClass *objectClass;
    QDeclarativeValueTypeScriptClass *valueTypeClass;
    QDeclarativeTypeNameScriptClass *typeNameClass;
    QDeclarativeListScriptClass *listClass;
    // Global script class
    QDeclarativeGlobalScriptClass *globalClass;

    // Registered cleanup handlers
    QDeclarativeCleanup *cleanup;

    // Bindings that have had errors during startup
    QDeclarativeDelayedError *erroredBindings;
    int inProgressCreations;

    QDeclarativeScriptEngine scriptEngine;

    QDeclarativeWorkerScriptEngine *getWorkerScriptEngine();
    QDeclarativeWorkerScriptEngine *workerScriptEngine;

    QUrl baseUrl;

    template<class T>
    struct SimpleList {
        SimpleList()
            : count(0), values(0) {}
        SimpleList(int r)
            : count(0), values(new T*[r]) {}

        int count;
        T **values;

        void append(T *v) {
            values[count++] = v;
        }

        T *at(int idx) const {
            return values[idx];
        }

        void clear() {
            delete [] values;
        }
    };

    static void clear(SimpleList<QDeclarativeAbstractBinding> &);
    static void clear(SimpleList<QDeclarativeParserStatus> &);

    QList<SimpleList<QDeclarativeAbstractBinding> > bindValues;
    QList<SimpleList<QDeclarativeParserStatus> > parserStatus;
    QDeclarativeComponentAttached *componentAttacheds;

    bool inBeginCreate;

    QNetworkAccessManager *createNetworkAccessManager(QObject *parent) const;
    QNetworkAccessManager *getNetworkAccessManager() const;
    mutable QNetworkAccessManager *networkAccessManager;
    mutable QDeclarativeNetworkAccessManagerFactory *networkAccessManagerFactory;

    QHash<QString,QDeclarativeImageProvider*> imageProviders;
    QImage getImageFromProvider(const QUrl &url);

    mutable QMutex mutex;

    QDeclarativeCompositeTypeManager typeManager;
    QStringList fileImportPath;
    QString offlineStoragePath;

    mutable quint32 uniqueId;
    quint32 getUniqueId() const {
        return uniqueId++;
    }

    QDeclarativeValueTypeFactory valueTypes;

    QHash<const QMetaObject *, QDeclarativePropertyCache *> propertyCache;
    QDeclarativePropertyCache *cache(QObject *obj) { 
        Q_Q(QDeclarativeEngine);
        if (!obj || QObjectPrivate::get(obj)->metaObject || 
            QObjectPrivate::get(obj)->wasDeleted) return 0;
        const QMetaObject *mo = obj->metaObject();
        QDeclarativePropertyCache *rv = propertyCache.value(mo);
        if (!rv) {
            rv = QDeclarativePropertyCache::create(q, mo);
            propertyCache.insert(mo, rv);
        }
        return rv;
    }

    // ### This whole class is embarrassing
    struct Imports {
        Imports();
        ~Imports();
        Imports(const Imports &copy);
        Imports &operator =(const Imports &copy);

        void setBaseUrl(const QUrl& url);
        QUrl baseUrl() const;

        void cache(QDeclarativeTypeNameCache *cache, QDeclarativeEngine *) const;

    private:
        friend class QDeclarativeEnginePrivate;
        QDeclarativeImportsPrivate *d;
    };


    QStringList environmentImportPath;
    QSet<QString> initializedPlugins;

    QString resolvePlugin(const QDir &dir, const QString &baseName,
                          const QStringList &suffixes,
                          const QString &prefix = QString());
    QString resolvePlugin(const QDir &dir, const QString &baseName);


    bool addToImport(Imports*, const QDeclarativeDirComponents &qmldircomponentsnetwork, 
                     const QString& uri, const QString& prefix, int vmaj, int vmin, 
                     QDeclarativeScriptParser::Import::Type importType) const;
    bool resolveType(const Imports&, const QByteArray& type,
                     QDeclarativeType** type_return, QUrl* url_return,
                     int *version_major, int *version_minor,
                     ImportedNamespace** ns_return) const;
    void resolveTypeInNamespace(ImportedNamespace*, const QByteArray& type,
                                QDeclarativeType** type_return, QUrl* url_return,
                                int *version_major, int *version_minor ) const;


    void registerCompositeType(QDeclarativeCompiledData *);

    bool isQObject(int);
    QObject *toQObject(const QVariant &, bool *ok = 0) const;
    QDeclarativeMetaType::TypeCategory typeCategory(int) const;
    bool isList(int) const;
    int listType(int) const;
    const QMetaObject *rawMetaObjectForType(int) const;
    const QMetaObject *metaObjectForType(int) const;
    QHash<int, int> m_qmlLists;
    QHash<int, QDeclarativeCompiledData *> m_compositeTypes;

    QHash<QString, QScriptValue> m_sharedScriptImports;

    QScriptValue scriptValueFromVariant(const QVariant &);
    QVariant scriptValueToVariant(const QScriptValue &);

    void sendQuit ();

    static QScriptValue qmlScriptObject(QObject*, QDeclarativeEngine*);

    static QScriptValue createComponent(QScriptContext*, QScriptEngine*);
    static QScriptValue createQmlObject(QScriptContext*, QScriptEngine*);
    static QScriptValue vector(QScriptContext*, QScriptEngine*);
    static QScriptValue rgba(QScriptContext*, QScriptEngine*);
    static QScriptValue hsla(QScriptContext*, QScriptEngine*);
    static QScriptValue point(QScriptContext*, QScriptEngine*);
    static QScriptValue size(QScriptContext*, QScriptEngine*);
    static QScriptValue rect(QScriptContext*, QScriptEngine*);

    static QScriptValue lighter(QScriptContext*, QScriptEngine*);
    static QScriptValue darker(QScriptContext*, QScriptEngine*);
    static QScriptValue tint(QScriptContext*, QScriptEngine*);

    static QScriptValue desktopOpenUrl(QScriptContext*, QScriptEngine*);
    static QScriptValue md5(QScriptContext*, QScriptEngine*);
    static QScriptValue btoa(QScriptContext*, QScriptEngine*);
    static QScriptValue atob(QScriptContext*, QScriptEngine*);
    static QScriptValue consoleLog(QScriptContext*, QScriptEngine*);
    static QScriptValue quit(QScriptContext*, QScriptEngine*);

    static QScriptValue formatDate(QScriptContext*, QScriptEngine*);
    static QScriptValue formatTime(QScriptContext*, QScriptEngine*);
    static QScriptValue formatDateTime(QScriptContext*, QScriptEngine*);

    static QScriptEngine *getScriptEngine(QDeclarativeEngine *e) { return &e->d_func()->scriptEngine; }
    static QDeclarativeEngine *getEngine(QScriptEngine *e) { return static_cast<QDeclarativeScriptEngine*>(e)->p->q_func(); }
    static QDeclarativeEnginePrivate *get(QDeclarativeEngine *e) { return e->d_func(); }
    static QDeclarativeEnginePrivate *get(QDeclarativeContext *c) { return (c && c->engine()) ? QDeclarativeEnginePrivate::get(c->engine()) : 0; }
    static QDeclarativeEnginePrivate *get(QDeclarativeContextData *c) { return (c && c->engine) ? QDeclarativeEnginePrivate::get(c->engine) : 0; }
    static QDeclarativeEnginePrivate *get(QScriptEngine *e) { return static_cast<QDeclarativeScriptEngine*>(e)->p; }
    static QDeclarativeEngine *get(QDeclarativeEnginePrivate *p) { return p->q_func(); }
    QDeclarativeContextData *getContext(QScriptContext *);

    static void defineModule();
};

QT_END_NAMESPACE

#endif // QDECLARATIVEENGINE_P_H