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author | toma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da> | 2009-11-25 17:56:58 +0000 |
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committer | toma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da> | 2009-11-25 17:56:58 +0000 |
commit | 47d455dd55be855e4cc691c32f687f723d9247ee (patch) | |
tree | 52e236aaa2576bdb3840ebede26619692fed6d7d /kcoloredit/editablestreamhistory.h | |
download | tdegraphics-47d455dd55be855e4cc691c32f687f723d9247ee.tar.gz tdegraphics-47d455dd55be855e4cc691c32f687f723d9247ee.zip |
Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
BUG:215923
git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdegraphics@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
Diffstat (limited to 'kcoloredit/editablestreamhistory.h')
-rw-r--r-- | kcoloredit/editablestreamhistory.h | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/kcoloredit/editablestreamhistory.h b/kcoloredit/editablestreamhistory.h new file mode 100644 index 00000000..9fe59d99 --- /dev/null +++ b/kcoloredit/editablestreamhistory.h @@ -0,0 +1,107 @@ +/*************************************************************************** + editablestreamhistory.h - description + ------------------- + begin : Sun Jul 9 2000 + copyright : (C) 2000 by Artur Rataj + email : art@zeus.polsl.gliwice.pl + ***************************************************************************/ + +/*************************************************************************** + * * + * This program is free software; you can redistribute it and/or modify * + * it under the terms of the GNU General Public License as published by * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) any later version. * + * * + ***************************************************************************/ + +#ifndef EDITABLESTREAMHISTORY_H +#define EDITABLESTREAMHISTORY_H + +/** A template class adding undo/redo history for EDITABLE_STREAM paste and cut + * methods + * @author Artur Rataj + */ +template <class EDITABLE_STREAM> class EditableStreamHistory { +public: + /** Constructs the class with stream as an EDITABLE_STREAM and + * a given number of undo levels + */ + EditableStreamHistory(EDITABLE_STREAM* stream, const int undoLevels); + ~EditableStreamHistory(); + /** Cuts a stream at index, of length length. + * Uses undo/redo history. + * @return A stream that has been cut out + */ + EDITABLE_STREAM cut(const int index, const int length); + /** Pastes a stream at index. Uses undo/redo history */ + void paste(const int index, EDITABLE_STREAM& pasteStream); + /** Replaces a stream at index. Uses undo/redo history */ + void replace(const int index, EDITABLE_STREAM& replaceStream); + /** @return Whether undo possible */ + bool undoPossible(); + /** @return Whether redo possible */ + bool redoPossible(); + /** Undoes if possible */ + void undo(); + /** Redoes if possible */ + void redo(); + /** @return A pointer to editableStream */ + EDITABLE_STREAM* editableStream(); + +protected: + /** An editable stream */ + EDITABLE_STREAM* m_editableStream; + /** A number of undo levels */ + int m_undoLevels; +}; + +template <class EDITABLE_STREAM> EditableStreamHistory<EDITABLE_STREAM>:: + EditableStreamHistory(EDITABLE_STREAM* stream, const int undoLevels) { + m_editableStream = stream; + m_undoLevels = undoLevels; +} +template <class EDITABLE_STREAM> EditableStreamHistory<EDITABLE_STREAM>::~EditableStreamHistory() { +} + +template <class EDITABLE_STREAM> EDITABLE_STREAM + EditableStreamHistory<EDITABLE_STREAM>::cut(const int index, const int length) { + EDITABLE_STREAM cut_stream = m_editableStream->cut(index, length); + return cut_stream; +} + +template <class EDITABLE_STREAM> void + EditableStreamHistory<EDITABLE_STREAM>::paste(const int index, EDITABLE_STREAM& pasteStream) { + m_editableStream->paste(index, pasteStream); +} + +template <class EDITABLE_STREAM> void + EditableStreamHistory<EDITABLE_STREAM>::replace(const int index, EDITABLE_STREAM& replaceStream) { + m_editableStream->cut(index, replaceStream.length()); + m_editableStream->paste(index, replaceStream); +} + +template <class EDITABLE_STREAM> bool + EditableStreamHistory<EDITABLE_STREAM>::undoPossible() { + return false; +} + +template <class EDITABLE_STREAM> bool + EditableStreamHistory<EDITABLE_STREAM>::redoPossible() { + return false; +} + +template <class EDITABLE_STREAM> void + EditableStreamHistory<EDITABLE_STREAM>::undo() { +} + +template <class EDITABLE_STREAM> void + EditableStreamHistory<EDITABLE_STREAM>::redo() { +} + +template <class EDITABLE_STREAM> EDITABLE_STREAM* + EditableStreamHistory<EDITABLE_STREAM>::editableStream() { + return m_editableStream; +} + +#endif |