Class: Textbringer::OverwriteAction

Inherits:
UndoableAction show all
Defined in:
lib/textbringer/modes/overwrite_mode.rb

Instance Attribute Summary

Attributes inherited from UndoableAction

#location, #version

Instance Method Summary collapse

Constructor Details

#initialize(buffer, location, inserted_string, deleted_string) ⇒ OverwriteAction

Returns a new instance of OverwriteAction.



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# File 'lib/textbringer/modes/overwrite_mode.rb', line 53

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

Instance Method Details

#merge(inserted_string, deleted_string) ⇒ Object 



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# File 'lib/textbringer/modes/overwrite_mode.rb', line 73

def merge(inserted_string, deleted_string)
  unless @copied
    @inserted_string = @inserted_string.dup
    @deleted_string = @deleted_string.dup
    @copied = true
  end
  @inserted_string.concat(inserted_string)
  @deleted_string.concat(deleted_string)
end

#redo ⇒ Object 



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# File 'lib/textbringer/modes/overwrite_mode.rb', line 67

def redo
  @buffer.goto_char(@location)
  @buffer.delete_region(@location, @location + @deleted_string.bytesize)
  @buffer.insert(@inserted_string)
end

#undo ⇒ Object 



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# File 'lib/textbringer/modes/overwrite_mode.rb', line 60

def undo
  @buffer.goto_char(@location)
  @buffer.delete_region(@location, @location + @inserted_string.bytesize)
  @buffer.insert(@deleted_string)
  @buffer.goto_char(@location)
end