Class: Textbringer::DeleteAction

Inherits:

UndoableAction

• Object
• UndoableAction
• Textbringer::DeleteAction

Defined in:

lib/textbringer/buffer.rb

Instance Attribute Summary

• #string ⇒ Object readonly

  Returns the value of attribute string.

Attributes inherited from UndoableAction

#location, #version

Instance Method Summary

• #initialize(buffer, location, insert_location, string) ⇒ DeleteAction constructor

  A new instance of DeleteAction.

• #redo ⇒ Object
• #undo ⇒ Object

Constructor Details

#initialize(buffer, location, insert_location, string) ⇒ DeleteAction

# File 'lib/textbringer/buffer.rb', line 1866

def initialize(buffer, location, insert_location, string)
  super(buffer, location)
  @insert_location = insert_location
  @string = string
end

Instance Attribute Details

#string ⇒ Object (readonly)

Returns the value of attribute string.

# File 'lib/textbringer/buffer.rb', line 1864

def string
  @string
end

Instance Method Details

#redo ⇒ Object

# File 'lib/textbringer/buffer.rb', line 1878

def redo
  @buffer.goto_char(@insert_location)
  @buffer.delete_region(@insert_location,
                        @insert_location + @string.bytesize)
end

#undo ⇒ Object

# File 'lib/textbringer/buffer.rb', line 1872

def undo
  @buffer.goto_char(@insert_location)
  @buffer.insert(@string)
  @buffer.goto_char(@location)
end