pdftron::SDF::UndoManager Class Reference

#include <UndoManager.h>

Public Member Functions
	UndoManager (const UndoManager &other)
	UndoManager (TRN_UndoManager impl)
UndoManager &	operator= (const UndoManager &other)
	~UndoManager ()
void	Destroy ()
DocSnapshot	DiscardAllSnapshots ()
ResultSnapshot	Undo ()
bool	CanUndo () const
DocSnapshot	GetNextUndoSnapshot () const
ResultSnapshot	Redo ()
bool	CanRedo () const
DocSnapshot	GetNextRedoSnapshot () const
ResultSnapshot	TakeSnapshot ()

Public Attributes
TRN_UndoManager	m_impl

Detailed Description

The class UndoManager. Undo-redo interface; one-to-one mapped to document

Definition at line 25 of file UndoManager.h.

Constructor & Destructor Documentation

pdftron::SDF::UndoManager::UndoManager

(

const UndoManager &

other

)

pdftron::SDF::UndoManager::UndoManager

(

TRN_UndoManager

impl

)

pdftron::SDF::UndoManager::~UndoManager

(

)

Member Function Documentation

bool pdftron::SDF::UndoManager::CanRedo

(

)

const

Returns a boolean indicating whether it is possible to redo from the current snapshot.

Returns

A boolean indicating whether it is possible to redo from the current snapshot.

bool pdftron::SDF::UndoManager::CanUndo

(

)

const

Returns whether it is possible to undo from the current snapshot.

Returns

Whether it is possible to undo from the current snapshot.

void pdftron::SDF::UndoManager::Destroy

(

)

DocSnapshot pdftron::SDF::UndoManager::DiscardAllSnapshots

(

)

Forget all changes in this manager (without changing the document).

Returns

An invalid DocSnapshot.

DocSnapshot pdftron::SDF::UndoManager::GetNextRedoSnapshot

(

)

const

Gets the next state of the document. This state may be invalid if it is impossible to redo.

Returns

The next state of the document. This state may be invalid if it is impossible to redo.

DocSnapshot pdftron::SDF::UndoManager::GetNextUndoSnapshot

(

)

const

Gets the previous state of the document. This state may be invalid if it is impossible to undo.

Returns

The previous state of the document. This state may be invalid if it is impossible to undo.

UndoManager& pdftron::SDF::UndoManager::operator=

(

const UndoManager &

other

)

ResultSnapshot pdftron::SDF::UndoManager::Redo

(

)

Restores to the next snapshot, if there is one.

Returns

A representation of the transition to the next snapshot, if there is one.

ResultSnapshot pdftron::SDF::UndoManager::TakeSnapshot

(

)

Creates a snapshot of document state, transitions to the new snapshot.

Returns

A representation of the transition.

ResultSnapshot pdftron::SDF::UndoManager::Undo

(

)

Restores to the previous snapshot point, if there is one.

Returns

The resulting snapshot id.

Member Data Documentation

TRN_UndoManager pdftron::SDF::UndoManager::m_impl

Definition at line 98 of file UndoManager.h.

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

• SDF/UndoManager.h