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