Class: Fox::FXCommand

Inherits:
Object
  • Object
show all
Defined in:
lib/fox16/undolist.rb

Overview

FXCommand is an “abstract” base class for your application’s commands. At a minimum, your concrete subclasses of FXCommand should implement the #undo, #redo, #undoName, and #redoName methods.

Instance Method Summary collapse

Instance Method Details

#redo ⇒ Object

Redo this command; this should save enough information for a subsequent undo.

Raises:

  • (NotImpError) 


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# File 'lib/fox16/undolist.rb', line 425

def redo
  raise NotImpError
end

#redoName ⇒ Object

Name of the redo command to be shown on a button or menu command; for example, “Redo Delete”.

Raises:

  • (NotImpError) 


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# File 'lib/fox16/undolist.rb', line 441

def redoName
  raise NotImpError
end

#size ⇒ Object

Returns the size of the information in the undo record, i.e. the number of bytes required to store it in memory. This is only used by the FXUndoList#trimSize method, which can be called to reduce the memory use of the undo list to a certain size.



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# File 'lib/fox16/undolist.rb', line 451

def size
  0
end

#undo ⇒ Object

Undo this command; this should save enough information for a subsequent redo.

Raises:

  • (NotImpError) 


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# File 'lib/fox16/undolist.rb', line 417

def undo
  raise NotImpError
end

#undoName ⇒ Object

Name of the undo command to be shown on a button or menu command; for example, “Undo Delete”.

Raises:

  • (NotImpError) 


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# File 'lib/fox16/undolist.rb', line 433

def undoName
  raise NotImpError
end