Class: Ruco::EditorArea

Inherits:
TextArea show all
Defined in:
lib/ruco/editor_area.rb

Overview

everything that does not belong to a text-area but is needed for Ruco::Editor

Instance Attribute Summary

Attributes inherited from TextArea

#column, #line, #lines, #selection

Instance Method Summary collapse

Methods inherited from TextArea

#content, #cursor, #delete, #index_for_position, #insert, #move, #reset, #resize, #selecting, #style_map, #text_in_selection

Constructor Details

#initialize(*args) ⇒ EditorArea

Returns a new instance of EditorArea.



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# File 'lib/ruco/editor_area.rb', line 5

def initialize(*args)
  super(*args)
  @history = History.new((args.last[:history]||{}).reverse_merge(:state => state, :track => [:content], :entries => 100, :timeout => 2))
end

Instance Method Details

#delete_line ⇒ Object 



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# File 'lib/ruco/editor_area.rb', line 25

def delete_line
  lines.slice!(line, 1)
  sanitize_position
end

#indent ⇒ Object 



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# File 'lib/ruco/editor_area.rb', line 30

def indent
  selected_lines.each do |line|
    lines[line].insert(0, ' ' * Ruco::TAB_SIZE)
  end
  adjust_to_indentation Ruco::TAB_SIZE
end

#redo ⇒ Object 



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# File 'lib/ruco/editor_area.rb', line 15

def redo
  @history.redo
  self.state = @history.state
end

#state ⇒ Object 



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# File 'lib/ruco/editor_area.rb', line 48

def state
  {
    :content => content,
    :position => position,
    :screen_position => screen_position
  }
end

#state=(data) ⇒ Object 



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# File 'lib/ruco/editor_area.rb', line 56

def state=(data)
  @selection = nil
  @lines = data[:content].naive_split("\n") if data[:content]
  self.position = data[:position]
  self.screen_position = data[:screen_position]
end

#undo ⇒ Object 



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# File 'lib/ruco/editor_area.rb', line 10

def undo
  @history.undo
  self.state = @history.state
end

#unindent ⇒ Object 



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# File 'lib/ruco/editor_area.rb', line 37

def unindent
  lines_to_unindent = (selection ? selected_lines : [line])
  removed = lines_to_unindent.map do |line|
    remove = [lines[line].leading_whitespace.size, Ruco::TAB_SIZE].min
    lines[line].slice!(0, remove)
    remove
  end

  adjust_to_indentation -removed.first, -removed.last
end

#view ⇒ Object 



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# File 'lib/ruco/editor_area.rb', line 20

def view
  @history.add(state)
  super
end