Editor::Undo Class Reference

Undo manager class. This class is used to manage undo/redo operations for user actions in the Editor. More...

#include <Undo.h>

Inherits QObject.

Signals
void	worldModified ()
	This signal is emitted when an action brings any changes to the scene. More...
void	activity ()
	This signal is emitted when an action has been applied, undone, redone, or pushed to transaction stack. More...

Static Public Member Functions
static Undo *	instance ()
	Returns the instance of the Undo class. This method is used to subscribe to signals. More...
static void	apply (Action *action)
	Applies the specified action. More...
static void	push (Action *action)
	Pushes the specified action to the transaction stack. More...
static void	undo ()
	Reverts the last action in the stack. More...
static void	redo ()
	Redoes the last action that was undone (reverses the undo method). More...
static void	reset ()
	Clears the undo/redo stack. More...
static void	begin ()
	Begins a transaction (i.e. a sequence of actions applied to be applied or reverted as a whole). Use commit() to apply all actions of the current transaction, or rollback() to revert them. More...
static void	commit ()
	Commits the last transaction (i.e. a sequence of actions applied since the last call of the begin() method). More...
static void	rollback ()
	Reverts the last transaction (i.e. a sequence of actions applied since the last call of the begin() method). More...

Detailed Description

Undo manager class. This class is used to manage undo/redo operations for user actions in the Editor.

Member Function Documentation

activity

void Editor::Undo::activity ( )

signal

This signal is emitted when an action has been applied, undone, redone, or pushed to transaction stack.

apply()

static void Editor::Undo::apply ( Action *  action )

static

Applies the specified action.

Parameters

action

Action to be applied.

begin()

static void Editor::Undo::begin ( )

static

Begins a transaction (i.e. a sequence of actions applied to be applied or reverted as a whole). Use commit() to apply all actions of the current transaction, or rollback() to revert them.

commit()

static void Editor::Undo::commit ( )

static

Commits the last transaction (i.e. a sequence of actions applied since the last call of the begin() method).

instance()

static Undo* Editor::Undo::instance ( )

static

Returns the instance of the Undo class. This method is used to subscribe to signals.

Returns

Undo class instance.

Example:

connect(Editor::Undo::instance(), &Editor::Undo::worldModified
  , this, &SomeClass::world_modified);

push()

static void Editor::Undo::push ( Action *  action )

static

Pushes the specified action to the transaction stack.

Parameters

action

Action to be pushed.

redo()

static void Editor::Undo::redo ( )

static

Redoes the last action that was undone (reverses the undo method).

reset()

static void Editor::Undo::reset ( )

static

Clears the undo/redo stack.

rollback()

static void Editor::Undo::rollback ( )

static

Reverts the last transaction (i.e. a sequence of actions applied since the last call of the begin() method).

undo()

static void Editor::Undo::undo ( )

static

Reverts the last action in the stack.

worldModified

void Editor::Undo::worldModified ( )

signal

This signal is emitted when an action brings any changes to the scene.