Class: Textbringer::InsertAction

Inherits:

UndoableAction

• Object
• UndoableAction
• Textbringer::InsertAction

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, string) ⇒ InsertAction constructor

  A new instance of InsertAction.

• #merge(s) ⇒ Object
• #redo ⇒ Object
• #undo ⇒ Object

Constructor Details

#initialize(buffer, location, string) ⇒ InsertAction

Returns a new instance of InsertAction.

# File 'lib/textbringer/buffer.rb', line 1967

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

Instance Attribute Details

#string ⇒ Object (readonly)

Returns the value of attribute string.

# File 'lib/textbringer/buffer.rb', line 1965

def string
  @string
end

Instance Method Details

#merge(s) ⇒ Object

# File 'lib/textbringer/buffer.rb', line 1983

def merge(s)
  unless @copied
    @string = @string.dup
    @copied = true
  end
  @string.concat(s)
end

#redo ⇒ Object

# File 'lib/textbringer/buffer.rb', line 1978

def redo
  @buffer.goto_char(@location)
  @buffer.insert(@string)
end

#undo ⇒ Object

# File 'lib/textbringer/buffer.rb', line 1973

def undo
  @buffer.goto_char(@location)
  @buffer.delete_region(@location, @location + @string.bytesize)
end