Class: Textbringer::EchoArea

Inherits:
Window
  • Object
show all
Defined in:
lib/textbringer/window.rb

Constant Summary

Constants inherited from Window

Window::ALT_ALPHA_BASE, Window::ALT_NUMBER_BASE, Window::FALLBACK_CHARACTERS, Window::HAVE_GET_KEY_MODIFIERS, Window::KEY_NAMES

Instance Attribute Summary collapse

Attributes inherited from Window

#bottom_of_window, #buffer, #columns, #lines, #mode_line, #top_of_window, #window, #x, #y

Instance Method Summary collapse

Methods inherited from Window

beep, #close, colors, columns, current, current=, #current?, #delete, delete_other_windows, delete_window, #deleted?, echo_area, #enlarge, has_colors=, has_colors?, #has_input?, #highlight, lines, list, load_faces, other_window, #read_event, #read_event_nonblock, #recenter, #recenter_if_needed, redisplay, redraw, resize, #restore_point, #save_point, #scroll_down, #scroll_up, set_default_colors, #shrink, #shrink_if_larger_than_buffer, #split, start, update, #wait_input

Constructor Details

#initialize(*args) ⇒ EchoArea

Returns a new instance of EchoArea.



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# File 'lib/textbringer/window.rb', line 887

def initialize(*args)
  super
  @message = nil
  @prompt = ""
  @active = false
end

Instance Attribute Details

#active=(value) ⇒ Object (writeonly)

Sets the attribute active

Parameters:

  • value —

    the value to set the attribute active to.



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# File 'lib/textbringer/window.rb', line 885

def active=(value)
  @active = value
end

#message ⇒ Object (readonly)

Returns the value of attribute message.



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# File 'lib/textbringer/window.rb', line 883

def message
  @message
end

#prompt ⇒ Object

Returns the value of attribute prompt.



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# File 'lib/textbringer/window.rb', line 884

def prompt
  @prompt
end

Instance Method Details

#active? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/textbringer/window.rb', line 898

def active?
  @active
end

#clear ⇒ Object 



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# File 'lib/textbringer/window.rb', line 902

def clear
  @buffer.clear
  @top_of_window.location = @buffer.point_min
  @message = nil
  @prompt = ""
end

#clear_message ⇒ Object 



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# File 'lib/textbringer/window.rb', line 909

def clear_message
  @message = nil
end

#echo_area? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/textbringer/window.rb', line 894

def echo_area?
  true
end

#editable_columns ⇒ Object 



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# File 'lib/textbringer/window.rb', line 978

def editable_columns
  if @buffer.input_method_status == "--"
    @columns
  else
    @columns - Buffer.display_width(@buffer.input_method_status) - 1
  end
end

#move(y, x) ⇒ Object 



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# File 'lib/textbringer/window.rb', line 966

def move(y, x)
  @y = y
  @x = x
  @window.move(y, x)
end

#redisplay ⇒ Object 



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# File 'lib/textbringer/window.rb', line 917

def redisplay
  return if @buffer.nil?
  @buffer.save_point do |point|
    @window.erase
    if @buffer.input_method_status != "--"
      @window.setpos(@window.cury, editable_columns + 1)
      @window.addstr(@buffer.input_method_status)
    end
    @window.setpos(0, 0)
    if @message
      @window.addstr(escape(@message))
    else
      prompt = escape(@prompt)
      @window.addstr(prompt)
      framer
      @buffer.point_to_mark(@top_of_window)
      @cursor.y = @cursor.x = 0
      while !@buffer.end_of_buffer?
        cury = @window.cury
        curx = @window.curx
        update_cursor_and_attr(point, cury, curx)
        c = @buffer.char_after
        if c == "\n"
          break
        end
        c = compose_character(point, cury, curx, c)
        s = escape(c)
        newx = curx + Buffer.display_width(s)
        if newx > editable_columns
          break
        end
        @window.addstr(s)
        @buffer.forward_char
        break if newx >= editable_columns
      end
      if @buffer.point_at_mark?(point)
        @cursor.y = @window.cury
        @cursor.x = @window.curx
      end
      @window.setpos(@cursor.y, @cursor.x)
    end
    @window.noutrefresh
  end
end

#redraw ⇒ Object 



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# File 'lib/textbringer/window.rb', line 962

def redraw
  @window.redraw
end

#resize(lines, columns) ⇒ Object 



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# File 'lib/textbringer/window.rb', line 972

def resize(lines, columns)
  @lines = lines
  @columns = columns
  @window.resize(lines, columns)
end

#show(message) ⇒ Object 



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# File 'lib/textbringer/window.rb', line 913

def show(message)
  @message = message
end