1 files changed, 141 insertions, 0 deletions
diff --git a/kate/part/kateundo.h b/kate/part/kateundo.h
new file mode 100644
index 000000000..66905f5cd
--- /dev/null
+++ b/kate/part/kateundo.h
@@ -0,0 +1,141 @@
+/* This file is part of the KDE libraries
+   Copyright (C) 2002 John Firebaugh <jfirebaugh@kde.org>
+   Copyright (C) 2001 Christoph Cullmann <cullmann@kde.org>
+   Copyright (C) 2001 Joseph Wenninger <jowenn@kde.org>
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public
+   License version 2 as published by the Free Software Foundation.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public License
+   along with this library; see the file COPYING.LIB.  If not, write to
+   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+   Boston, MA 02110-1301, USA.
+*/
+
+#ifndef kate_undo_h
+#define kate_undo_h
+
+#include <qptrlist.h>
+#include <qstring.h>
+
+class KateDocument;
+class KateUndo;
+
+/**
+ * Class to manage a group of undo items
+ */
+class KateUndoGroup
+{
+  public:
+    /**
+     * Constructor
+     * @param doc document to belong to
+     */
+    KateUndoGroup (KateDocument *doc);
+
+    /**
+     * Destructor
+     */
+    ~KateUndoGroup ();
+
+  public:
+    /**
+     * Undo the contained undo items
+     */
+    void undo ();
+
+    /**
+     * Redo the contained undo items
+     */
+    void redo ();
+
+  public:
+    /**
+     * Types for undo items
+     */
+    enum UndoType
+    {
+      editInsertText,
+      editRemoveText,
+      editWrapLine,
+      editUnWrapLine,
+      editInsertLine,
+      editRemoveLine,
+      editMarkLineAutoWrapped,
+      editInvalid
+    };
+
+    /**
+     * add an item to the group
+     * @param type undo item type
+     * @param line line affected
+     * @param col start column
+     * @param len lenght of change
+     * @param text text removed/inserted
+     */
+    void addItem (KateUndoGroup::UndoType type, uint line, uint col, uint len, const QString &text);
+
+    /**
+     * merge this group with an other
+     * @param newGroup group to merge into this one
+     * @param complex set if a complex undo
+     * @return success
+     */
+    bool merge(KateUndoGroup* newGroup,bool complex);
+
+    /**
+    * set group as as savepoint. the next group will not merge with this one
+    */
+    void safePoint (bool safePoint=true);
+
+    /**
+     * is this undogroup empty?
+     */
+    bool isEmpty () const { return m_items.isEmpty(); }
+
+  private:
+    /**
+     * singleType
+     * @return the type if it's only one type, or editInvalid if it contains multiple types.
+     */
+    KateUndoGroup::UndoType singleType();
+
+    /**
+     * are we only of this type ?
+     * @param type type to query
+     * @return we contain only the given type
+     */
+    bool isOnlyType(KateUndoGroup::UndoType type);
+
+    /**
+     * add an undo item
+     * @param u item to add
+     */
+    void addItem (KateUndo *u);
+
+  private:
+    /**
+     * Document we belong to
+     */
+    KateDocument *m_doc;
+
+    /**
+     * list of items contained
+     */
+    QPtrList<KateUndo> m_items;
+
+    /**
+     * prohibit merging with the next group
+     */
+    bool m_safePoint;
+};
+
+#endif
+
+// kate: space-indent on; indent-width 2; replace-tabs on;