myscript::iink::HistoryManager Class Reference

#include <HistoryManager.h>

Public Member Functions
virtual	~HistoryManager ()=default
virtual void	undo ()=0
virtual void	redo ()=0
virtual int	getUndoRedoStackIndex ()=0
virtual int	getPossibleUndoCount ()=0
virtual int	getPossibleRedoCount ()=0
virtual String	getUndoRedoIdAt (int stackIndex)=0
virtual std::vector< ChangesetOperation >	getUndoChangesetTo (const String &id)=0
virtual std::vector< ChangesetOperation >	getRedoChangesetFrom (const String &id)=0

Detailed Description

A HistoryManager allows managing changesets for undo/redo. It is associated with an offscreen editor.

Since

3.0

Constructor & Destructor Documentation

~HistoryManager()

virtual myscript::iink::HistoryManager::~HistoryManager ( )

virtualdefault

Member Function Documentation

undo()

virtual void myscript::iink::HistoryManager::undo ( )

pure virtual

Undo the last changeset on part.

Note

this function will wait for pending gestures recognition.

Exceptions

std::runtime_error	when associated editor has been destroyed.
std::runtime_error	when undo operations failed.

redo()

virtual void myscript::iink::HistoryManager::redo ( )

pure virtual

Redo the last changeset reverted by undo on part.

Note

this function will wait for pending gestures recognition.

Exceptions

std::runtime_error	when associated editor has been destroyed.
std::runtime_error	when redo operations failed.

getUndoRedoStackIndex()

virtual int myscript::iink::HistoryManager::getUndoRedoStackIndex ( )

pure virtual

Returns the number of changesets performed on the part, since content part was opened.

Note

this function will wait for pending gestures recognition.

the undo stack is partially purged from time to time to control memory consumption. The number of possible undo changesets at a given time is provided by getPossibleUndoCount(), while the total number of changesets since content part was opened is provided by getUndoStackIndex().

Returns

the number of changesets performed on the part.

Exceptions

std::runtime_error	when associated editor has been destroyed.
std::runtime_error	when editor is not associated with a part.

getPossibleUndoCount()

virtual int myscript::iink::HistoryManager::getPossibleUndoCount ( )

pure virtual

Returns the number of changesets that can be undone (<= getUndoStackIndex()).

Note

this function will wait for pending gestures recognition.

Returns

the number of changesets that can be undone.

Exceptions

std::runtime_error	when associated editor has been destroyed.
std::runtime_error	when editor is not associated with a part.

getPossibleRedoCount()

virtual int myscript::iink::HistoryManager::getPossibleRedoCount ( )

pure virtual

Returns the number of changesets that can be redone.

Note

this function will wait for pending gestures recognition.

Returns

the number of changesets that can be redone.

Exceptions

std::runtime_error	when associated editor has been destroyed.
std::runtime_error	when editor is not associated with a part.

getUndoRedoIdAt()

virtual String myscript::iink::HistoryManager::getUndoRedoIdAt ( int  stackIndex )

pure virtual

Returns the id associated with an undo/redo stack index. Valid stack index values range from (current stack index - possible undo count) to (current stack index + possible redo count - 1).

Note

this function will wait for pending gestures recognition.

Parameters

stackIndex

the index in the undo/redo stack.

Returns

the id associated with the undo/redo stack index.

Exceptions

std::runtime_error	when associated editor has been destroyed.
std::runtime_error	when editor is not associated with a part.
std::runtime_error	when stackIndex is invalid.

getUndoChangesetTo()

virtual std::vector<ChangesetOperation> myscript::iink::HistoryManager::getUndoChangesetTo ( const String &  id )

pure virtual

Returns the changeset corresponding to an undo to the given id.

Parameters

id	the id in the undo/redo stack.

Returns

the changeset if it exists, otherwise empty.

Exceptions

std::runtime_error	when associated editor has been destroyed.
std::runtime_error	when editor is not associated with a part.

getRedoChangesetFrom()

virtual std::vector<ChangesetOperation> myscript::iink::HistoryManager::getRedoChangesetFrom ( const String &  id )

pure virtual

Returns the changeset corresponding to a redo from the given id.

Parameters

id	the id in the undo/redo stack.

Returns

the changeset if it exists, otherwise empty.

Exceptions

std::runtime_error	when associated editor has been destroyed.
std::runtime_error	when editor is not associated with a part.

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The documentation for this class was generated from the following file:

• iink/services/HistoryManager.h