Editor: Introduce circular clipboard

This is a clipboard within Creator only. It allows the user to paste/navigate
through the recently copied content by repeatedly triggering a shortcut (which
is by default set to Ctrl+Shift+V).

Task-number: QTCREATORBUG-146
Change-Id: Ie449ab4b304548d5037a0c877bbbc0344d654325
Reviewed-by: Eike Ziller <eike.ziller@nokia.com>

1 files changed, 63 insertions, 0 deletions

diff --git a/src/plugins/texteditor/circularclipboard.h b/src/plugins/texteditor/circularclipboard.h
new file mode 100644
index 0000000000..c1827470be
--- /dev/null
+++ b/src/plugins/texteditor/circularclipboard.h
@@ -0,0 +1,63 @@
+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact: Nokia Corporation (info@qt.nokia.com)
+**
+**
+** 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.
+**
+** 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.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at info@qt.nokia.com.
+**
+**************************************************************************/
+
+#ifndef CIRCULARCLIPBOARD_H
+#define CIRCULARCLIPBOARD_H
+
+#include <QtCore/QList>
+#include <QtCore/QMimeData>
+
+namespace TextEditor {
+namespace Internal {
+
+class CircularClipboard
+{
+public:
+    static CircularClipboard *instance();
+
+    void collect(const QMimeData *mimeData);
+    const QMimeData *next() const;
+    void toLastCollect();
+
+private:
+    CircularClipboard();
+    ~CircularClipboard();
+    CircularClipboard &operator=(const CircularClipboard &);
+
+    mutable int m_current;
+    QList<const QMimeData *> m_items;
+};
+
+} // namespace Internal
+} // namespace TextEditor
+
+#endif // CIRCULARCLIPBOARD_H