Add support for more sequence types

This commit adds support for more sequence types by adding a sequence
wrapper.  This class enables conversion between v8::Array and C++
sequences of various types (currently just QList<int>, QList<qreal>,
QList<bool>, QList<QString>, QList<QUrl> and QStringList), but more
types can be added later if required).

When a JavaScript object is created from such a sequence, its
prototype object is set to the v8::Array prototype object.  The
indexed setter, indexed getter, length and toString methods are
implemented directly or in terms of the underlying sequence resource.

Note that currently, sequences of ValueTypes are NOT supported, due to
the fact that operations like:
     someObj.someValueTypeSequence[i].x = 5;
would not behave as required.

Task-number: QTBUG-20826
Task-number: QTBUG-21770
Change-Id: I36deb448fb0e87a32084a900e70a2604ff369309
Reviewed-by: Chris Adams <christopher.adams@nokia.com>

1 files changed, 104 insertions, 0 deletions

diff --git a/src/declarative/qml/v8/qv8sequencewrapper_p.h b/src/declarative/qml/v8/qv8sequencewrapper_p.h
new file mode 100644
index 0000000000..da0f7eacca
--- /dev/null
+++ b/src/declarative/qml/v8/qv8sequencewrapper_p.h
@@ -0,0 +1,104 @@
+/****************************************************************************
+**
+** 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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QV8SEQUENCEWRAPPER_P_H
+#define QV8SEQUENCEWRAPPER_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 <private/qv8_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QV8Engine;
+class QV8ObjectResource;
+class QV8SequenceWrapper
+{
+public:
+    QV8SequenceWrapper();
+    ~QV8SequenceWrapper();
+
+    void init(QV8Engine *);
+    void destroy();
+
+    bool isEqual(QV8ObjectResource *lhs, const QVariant &rhs);
+    bool isEqual(QV8ObjectResource *lhs, QV8ObjectResource *rhs);
+    quint32 sequenceLength(QV8ObjectResource *);
+
+    v8::Local<v8::Object> newSequence(int sequenceTypeId, QObject *object, int propertyIndex, bool *succeeded);
+    v8::Local<v8::Object> fromVariant(const QVariant& v, bool *succeeded);
+    QVariant toVariant(QV8ObjectResource *);
+    QVariant toVariant(v8::Handle<v8::Array> array, int typeHint, bool *succeeded);
+
+private:
+    QV8Engine *m_engine;
+
+    v8::Persistent<v8::Function> m_constructor;
+    v8::Persistent<v8::Function> m_toString;
+    v8::Persistent<v8::Function> m_valueOf;
+
+    static v8::Handle<v8::Value> IndexedGetter(quint32 index, const v8::AccessorInfo &info);
+    static v8::Handle<v8::Value> IndexedSetter(quint32 index, v8::Local<v8::Value> value, const v8::AccessorInfo &info);
+    static v8::Handle<v8::Array> IndexedEnumerator(const v8::AccessorInfo &info);
+    static v8::Handle<v8::Value> LengthGetter(v8::Local<v8::String> property, const v8::AccessorInfo &info);
+    static v8::Handle<v8::Value> ToStringGetter(v8::Local<v8::String> property, const v8::AccessorInfo &info);
+    static v8::Handle<v8::Value> ToString(const v8::Arguments &args);
+    static v8::Handle<v8::Value> ValueOfGetter(v8::Local<v8::String> property, const v8::AccessorInfo &info);
+    static v8::Handle<v8::Value> ValueOf(const v8::Arguments &args);
+    static v8::Handle<v8::Value> Getter(v8::Local<v8::String> property, const v8::AccessorInfo &info);
+    static v8::Handle<v8::Value> Setter(v8::Local<v8::String> property, v8::Local<v8::Value> value, const v8::AccessorInfo &info);
+};
+
+
+QT_END_NAMESPACE
+
+#endif // QV8SEQUENCEWRAPPER_P_H