Import relevant source from Qt 4.8

Change-Id: I5078db4081d95290c54f39d3c0efc2fc2f62e6a6

1 files changed, 96 insertions, 0 deletions

diff --git a/src/declarative/qml/qdeclarativeintegercache.cpp b/src/declarative/qml/qdeclarativeintegercache.cpp
new file mode 100644
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--- /dev/null
+++ b/src/declarative/qml/qdeclarativeintegercache.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2012 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.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "private/qdeclarativeintegercache_p.h"
+
+#include "private/qdeclarativeengine_p.h"
+#include "private/qdeclarativemetatype_p.h"
+
+QT_BEGIN_NAMESPACE
+
+QDeclarativeIntegerCache::QDeclarativeIntegerCache(QDeclarativeEngine *e)
+: QDeclarativeCleanup(e), engine(e)
+{
+}
+
+QDeclarativeIntegerCache::~QDeclarativeIntegerCache()
+{
+    clear();
+}
+
+void QDeclarativeIntegerCache::clear()
+{
+    qDeleteAll(stringCache);
+    stringCache.clear();
+    identifierCache.clear();
+    engine = 0;
+}
+
+QString QDeclarativeIntegerCache::findId(int value) const
+{
+    for (StringCache::ConstIterator iter = stringCache.begin();
+            iter != stringCache.end(); ++iter) {
+        if (iter.value() && iter.value()->value == value)
+            return iter.key();
+    }
+    return QString();
+}
+
+void QDeclarativeIntegerCache::add(const QString &id, int value)
+{
+    Q_ASSERT(!stringCache.contains(id));
+
+    QDeclarativeEnginePrivate *enginePriv = QDeclarativeEnginePrivate::get(engine);
+
+    // ### use contextClass
+    Data *d = new Data(enginePriv->objectClass->createPersistentIdentifier(id), value);
+
+    stringCache.insert(id, d);
+    identifierCache.insert(d->identifier, d);
+}
+
+int QDeclarativeIntegerCache::value(const QString &id)
+{
+    Data *d = stringCache.value(id);
+    return d?d->value:-1;
+}
+
+QT_END_NAMESPACE