diff options
Diffstat (limited to 'indra/llui/llundo.h')
| -rw-r--r-- | indra/llui/llundo.h | 136 |
1 files changed, 68 insertions, 68 deletions
diff --git a/indra/llui/llundo.h b/indra/llui/llundo.h index 19cb09e6bb..41e8a2b2f4 100644 --- a/indra/llui/llundo.h +++ b/indra/llui/llundo.h @@ -1,68 +1,68 @@ -/** - * @file llundo.h - * @brief Generic interface for undo/redo circular buffer. - * - * $LicenseInfo:firstyear=2000&license=viewerlgpl$ - * Second Life Viewer Source Code - * Copyright (C) 2010, Linden Research, Inc. - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; - * version 2.1 of the License only. - * - * 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 - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - * - * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA - * $/LicenseInfo$ - */ - -#ifndef LL_LLUNDO_H -#define LL_LLUNDO_H - - -class LLUndoBuffer -{ -public: - class LLUndoAction - { - friend class LLUndoBuffer; - public: - virtual void undo() = 0; - virtual void redo() = 0; - virtual void cleanup() {}; - protected: - LLUndoAction(): mClusterID(0) {}; - virtual ~LLUndoAction(){}; - private: - S32 mClusterID; - }; - - LLUndoBuffer( LLUndoAction (*create_func()), S32 initial_count ); - virtual ~LLUndoBuffer(); - - LLUndoAction *getNextAction(BOOL setClusterBegin = TRUE); - BOOL undoAction(); - BOOL redoAction(); - BOOL canUndo() { return (mNextAction != mFirstAction); } - BOOL canRedo() { return (mNextAction != mLastAction); } - - void flushActions(); - -private: - LLUndoAction **mActions; // array of pointers to undoactions - S32 mNumActions; // total number of actions in ring buffer - S32 mNextAction; // next action to perform undo/redo on - S32 mLastAction; // last action actually added to undo buffer - S32 mFirstAction; // beginning of ring buffer (don't undo any further) - S32 mOperationID; // current operation id, for undoing and redoing in clusters -}; - -#endif //LL_LLUNDO_H +/**
+ * @file llundo.h
+ * @brief Generic interface for undo/redo circular buffer.
+ *
+ * $LicenseInfo:firstyear=2000&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLUNDO_H
+#define LL_LLUNDO_H
+
+
+class LLUndoBuffer
+{
+public:
+ class LLUndoAction
+ {
+ friend class LLUndoBuffer;
+ public:
+ virtual void undo() = 0;
+ virtual void redo() = 0;
+ virtual void cleanup() {};
+ protected:
+ LLUndoAction(): mClusterID(0) {};
+ virtual ~LLUndoAction(){};
+ private:
+ S32 mClusterID;
+ };
+
+ LLUndoBuffer( LLUndoAction (*create_func()), S32 initial_count );
+ virtual ~LLUndoBuffer();
+
+ LLUndoAction *getNextAction(bool setClusterBegin = true);
+ bool undoAction();
+ bool redoAction();
+ bool canUndo() { return (mNextAction != mFirstAction); }
+ bool canRedo() { return (mNextAction != mLastAction); }
+
+ void flushActions();
+
+private:
+ LLUndoAction **mActions; // array of pointers to undoactions
+ S32 mNumActions; // total number of actions in ring buffer
+ S32 mNextAction; // next action to perform undo/redo on
+ S32 mLastAction; // last action actually added to undo buffer
+ S32 mFirstAction; // beginning of ring buffer (don't undo any further)
+ S32 mOperationID; // current operation id, for undoing and redoing in clusters
+};
+
+#endif //LL_LLUNDO_H
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