tests/auto/xmlpatternsxqts/lib/TreeItem.h
changeset 0 1918ee327afb
child 4 3b1da2848fc7
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/auto/xmlpatternsxqts/lib/TreeItem.h	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,114 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the test suite 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 PatternistSDK_TreeItem_H
+#define PatternistSDK_TreeItem_H
+
+#include <QObject>
+
+#include "Global.h"
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+class QVariant;
+template<typename T> class QList;
+template<typename T> class QPointer;
+
+namespace QPatternistSDK
+{
+    /**
+     * @short TreeItem is a node in a hierachial structure and is used together
+     * with TreeModel.
+     *
+     * TreeItem is abstract base class. Instances of sub-classes of TreeItem
+     * can be used with TreeModel in order to use hierarchial data in Qt's
+     * model/view framework.
+     *
+     * TreeItem is a QObject in order to be able to be used with QPointer.
+     *
+     * @author Frans Englich <frans.englich@nokia.com>
+     * @see TreeModel
+     * @ingroup PatternistSDK
+     */
+    class Q_PATTERNISTSDK_EXPORT TreeItem : public QObject
+    {
+        Q_OBJECT
+    public:
+        typedef QList<QPointer<TreeItem> > List;
+
+        virtual ~TreeItem() {}
+        virtual void appendChild(TreeItem *item) = 0;
+        virtual TreeItem *child(const unsigned int row) const = 0;
+        virtual unsigned int childCount() const = 0;
+        virtual TreeItem *parent() const = 0;
+
+        virtual TreeItem::List children() const = 0;
+        virtual int columnCount() const = 0;
+
+        /**
+         * Determines the position among the children of
+         * this TreeItem's parent. This is done by introspecting the result
+         * of children().
+         */
+        int row() const;
+
+        virtual QVariant data(const Qt::ItemDataRole role, int column) const = 0;
+
+    Q_SIGNALS:
+        /**
+         * Emitted whenever this item changed. This is used for keeping
+         * views in synchronization with the item model which houses
+         * this item.
+         *
+         * @param item the item which changed. That is, this TreeItem.
+         */
+        void changed(TreeItem *item);
+    };
+}
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif
+// vim: et:ts=4:sw=4:sts=4