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Main Page Class Hierarchy Alphabetical List Compound List File List Compound Members
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#include <FXUndoList.h>
Public Member Functions | |
virtual void | undo ()=0 |
virtual void | redo ()=0 |
virtual FXuint | size () const |
virtual FXString | undoName () const |
virtual FXString | redoName () const |
virtual bool | canMerge () const |
virtual bool | mergeWith (FXCommand *command) |
virtual | ~FXCommand () |
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virtual long | onDefault (FXObject *, FXSelector, void *) |
const FXchar * | getClassName () const |
bool | isMemberOf (const FXMetaClass *metaclass) const |
virtual long | tryHandle (FXObject *sender, FXSelector sel, void *ptr) |
virtual void | save (FXStream &store) const |
virtual void | load (FXStream &store) |
virtual | ~FXObject () |
Friends | |
class | FXUndoList |
class | FXCommandGroup |
Base class for undoable commands.
Each undo records all the information necessary to undo as well as redo a given operation. Since commands are derived from FXObject, subclassed commands can both send and receive messages (like ID_GETINTVALUE, for example).
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inlinevirtual |
Delete undo command.
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pure virtual |
Undo this command; this should save the information for a subsequent redo.
Implemented in FX::FXUndoList, and FX::FXCommandGroup.
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pure virtual |
Redo this command; this should save the information for a subsequent undo.
Implemented in FX::FXUndoList, and FX::FXCommandGroup.
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virtual |
Return the size of the information in the undo record.
The undo list may be trimmed to limit memory usage to a certain limit. The value returned should include the size of the command record itself as well as any data linked from it.
Reimplemented in FX::FXUndoList, and FX::FXCommandGroup.
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virtual |
Name of the undo command to be shown on a button; for example, "Undo Delete".
Reimplemented in FX::FXUndoList.
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virtual |
Name of the redo command to be shown on a button; for example, "Redo Delete".
Reimplemented in FX::FXUndoList.
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virtual |
Return TRUE if this command can be merged with previous undo commands.
This is useful to combine e.g. multiple consecutive single-character text changes into a single block change. The default implementation returns FALSE.
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virtual |
Called by the undo system to try and merge the new incoming command with this command; should return TRUE if merging was possible.
The default implementation returns FALSE.
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friend |
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friend |
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