1 files changed, 192 insertions, 0 deletions
diff --git a/imports/undo/uiquickundostack.cpp b/imports/undo/uiquickundostack.cpp
new file mode 100644
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--- /dev/null
+++ b/imports/undo/uiquickundostack.cpp
@@ -0,0 +1,192 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Instituto Nokia de Tecnologia (INdT)
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the UiHelpers playground module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** 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, Digia gives you certain additional
+** rights.  These rights are described in the Digia 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.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "uiquickundostack_p.h"
+#include "uiquickundocommand_p.h"
+#include "uiquickundopropertycommand_p.h"
+
+#include <QtQml/QQmlInfo>
+
+class UiQuickUndoStackPrivate : public UiUndoStack
+{
+    Q_DECLARE_PUBLIC(UiQuickUndoStack)
+
+public:
+    UiQuickUndoStackPrivate(UiQuickUndoStack *q);
+    ~UiQuickUndoStackPrivate();
+
+    void setCurrentCommand(UiUndoCommand *cmd);
+    void commit();
+
+    UiQuickUndoStack *q_ptr;
+    UiUndoCommand *currentCommand;
+};
+
+UiQuickUndoStackPrivate::UiQuickUndoStackPrivate(UiQuickUndoStack *q)
+    : UiUndoStack(q)
+    , q_ptr(q)
+    , currentCommand(0)
+{
+}
+
+UiQuickUndoStackPrivate::~UiQuickUndoStackPrivate()
+{
+}
+
+void UiQuickUndoStackPrivate::setCurrentCommand(UiUndoCommand *cmd)
+{
+    Q_Q(UiQuickUndoStack);
+    currentCommand = cmd;
+
+    if (!canUndo())
+        emit q->canUndoChanged();
+}
+
+void UiQuickUndoStackPrivate::commit()
+{
+    if (!currentCommand)
+        return;
+
+    push(currentCommand);
+    setCurrentCommand(0);
+}
+
+
+UiQuickUndoStack::UiQuickUndoStack(QObject *parent)
+    : QObject(parent)
+    , d_ptr(new UiQuickUndoStackPrivate(this))
+{
+    Q_D(const UiQuickUndoStack);
+    connect(d, SIGNAL(canUndoChanged(bool)), SIGNAL(canUndoChanged()));
+    connect(d, SIGNAL(canRedoChanged(bool)), SIGNAL(canRedoChanged()));
+}
+
+UiQuickUndoStack::~UiQuickUndoStack()
+{
+}
+
+int UiQuickUndoStack::undoLimit() const
+{
+    Q_D(const UiQuickUndoStack);
+    return d->undoLimit();
+}
+
+void UiQuickUndoStack::setUndoLimit(int limit)
+{
+    Q_D(UiQuickUndoStack);
+
+    int temp = d->undoLimit();
+    d->setUndoLimit(limit);
+
+    if (temp != limit)
+        emit undoLimitChanged();
+}
+
+bool UiQuickUndoStack::canUndo() const
+{
+    Q_D(const UiQuickUndoStack);
+    return d->canUndo() || (d->currentCommand != 0);
+}
+
+bool UiQuickUndoStack::canRedo() const
+{
+    Q_D(const UiQuickUndoStack);
+    return d->canRedo();
+}
+
+int UiQuickUndoStack::count() const
+{
+    Q_D(const UiQuickUndoStack);
+    if ((d->undoLimit() && (d->count() == d->undoLimit())) || !d->currentCommand)
+        return d->count();
+    else
+        return d->count() + 1;
+}
+
+void UiQuickUndoStack::clear()
+{
+    Q_D(UiQuickUndoStack);
+    d->clear();
+    d->setCurrentCommand(0);
+    emit countChanged();
+}
+
+void UiQuickUndoStack::push(UiQuickBaseUndoCommand *quickCommand, QObject *target)
+{
+    Q_D(UiQuickUndoStack);
+
+    if (!quickCommand) {
+        qmlInfo(this) << tr("Invalid (null) command passed to push().");
+        return;
+    }
+
+    if (!target) {
+        qmlInfo(this) << tr("Invalid (null) target passed to push().");
+        return;
+    }
+
+    d->commit();
+
+    int countTemp = count();
+
+    BaseUndoCommand *undoCommand = quickCommand->create(target);
+    if (undoCommand->delayPush())
+        d->setCurrentCommand(undoCommand);
+    else
+        d->push(undoCommand);
+
+    if (countTemp != count())
+        emit countChanged();
+}
+
+void UiQuickUndoStack::undo()
+{
+    Q_D(UiQuickUndoStack);
+    d->commit();
+    d->undo();
+}
+
+void UiQuickUndoStack::redo()
+{
+    Q_D(UiQuickUndoStack);
+    d->commit();
+    d->redo();
+}