Class: Canis::MenuItem

Inherits:
Object show all
Defined in:
lib/canis/core/widgets/rmenu.rb

Overview

Items in menus. These will usually result in an action which closes the entire

menubar.

Direct Known Subclasses

CheckBoxMenuItem, Menu

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(text, mnemonic = nil, &block) ⇒ MenuItem

Returns a new instance of MenuItem.



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# File 'lib/canis/core/widgets/rmenu.rb', line 81

def initialize text, mnemonic=nil, &block
  @text = text
  @enabled = true
  # check for mnem that is not one char, could be an accelerator
  if mnemonic
    if mnemonic.length != 1
      $log.error "MenuItem #{text} mnemonic #{mnemonic}  should be one character. Maybe you meant accelerator? " 
      mnemonic = nil
    end
  end
  @mnemonic = mnemonic
  instance_eval &block if block_given?
end

Instance Attribute Details

#accelerator(*val) ⇒ Object

add accelerator for a menu item NOTE: accelerator means that the application has tied this string to some action, outside of the menu bar. It does not mean that the menu bar will trigger the action. So the app still has to define the action and bind a key to that accelerator. This is only informative. Had to do this since dsl_accessor was throwing some nilclass does not have []= nomethod error This allows user to put accelerator inside dsl block

Examples:

accelerator "Ctrl-X"


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# File 'lib/canis/core/widgets/rmenu.rb', line 111

def accelerator(*val)
  if val.empty?
    return @accelerator
  else
    @accelerator = val[0]
  end
end

#active_index ⇒ Object (readonly)

2011-09-24 V1.3.1 trying to do a right



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# File 'lib/canis/core/widgets/rmenu.rb', line 79

def active_index
  @active_index
end

#bgcolor ⇒ Object

2011-09-25 V1.3.1



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# File 'lib/canis/core/widgets/rmenu.rb', line 77

def bgcolor
  @bgcolor
end

#coffset ⇒ Object

Returns the value of attribute coffset.



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# File 'lib/canis/core/widgets/rmenu.rb', line 73

def coffset
  @coffset
end

#col ⇒ Object

Returns the value of attribute col.



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# File 'lib/canis/core/widgets/rmenu.rb', line 72

def col
  @col
end

#color ⇒ Object

2011-09-25 V1.3.1



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# File 'lib/canis/core/widgets/rmenu.rb', line 77

def color
  @color
end

#color_pair ⇒ Object

2011-09-25 V1.3.1



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# File 'lib/canis/core/widgets/rmenu.rb', line 78

def color_pair
  @color_pair
end

#enabled ⇒ Object

Returns the value of attribute enabled.



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# File 'lib/canis/core/widgets/rmenu.rb', line 76

def enabled
  @enabled
end

#mnemonic ⇒ Object

changed reader to accessor



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# File 'lib/canis/core/widgets/rmenu.rb', line 80

def mnemonic
  @mnemonic
end

#parent ⇒ Object

Returns the value of attribute parent.



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# File 'lib/canis/core/widgets/rmenu.rb', line 69

def parent
  @parent
end

#row ⇒ Object

attr_accessor :window



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# File 'lib/canis/core/widgets/rmenu.rb', line 71

def row
  @row
end

#text ⇒ Object

changed reader to accessor



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# File 'lib/canis/core/widgets/rmenu.rb', line 80

def text
  @text
end

#width ⇒ Object

Returns the value of attribute width.



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# File 'lib/canis/core/widgets/rmenu.rb', line 74

def width
  @width
end

Instance Method Details

#command(*args, &block) ⇒ Object 



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# File 'lib/canis/core/widgets/rmenu.rb', line 97

def command *args, &block 
  $log.debug ">>>command : #{@text} "
  @command = block if block_given?
  alert "Command nil or some error! #{text} " unless @command
  @args = args
end

#destroy ⇒ Object 



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# File 'lib/canis/core/widgets/rmenu.rb', line 177

def destroy
 #$log.debug "DESTROY menuitem #{@text}"
end

#fire ⇒ Object

XXX it could be a menu again

We should not be firing a :NO_MENUITEMS



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# File 'lib/canis/core/widgets/rmenu.rb', line 127

def fire
  $log.debug ">>>fire menuitem : #{@text} #{@command} "
  @command.call self, *@args if !@command.nil?
  @parent.clear_menus
  return :CLOSE # added 2009-01-02 00:09 to close only actions, not submenus
end

#highlight(tf = true) ⇒ Object 



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# File 'lib/canis/core/widgets/rmenu.rb', line 133

def highlight tf=true
  if @parent.nil? or @parent.window.nil?
    #$log.debug "HL XXX #{self} parent nil"
    #$log.debug "HL XXX #{self} - > #{@parent} parent nil"
  end
  if tf
    @color_pair  ||= get_color($reversecolor, @color, @bgcolor)
    @parent.window.mvchgat(y=@row, x=@col+1, @width, Ncurses::A_REVERSE, @color_pair, nil)
  else
    repaint
  end
  @parent.window.wrefresh  unless @parent.window.nil? ## XXX 2009-01-21 22:00 
end

#on_enter ⇒ Object

item



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# File 'lib/canis/core/widgets/rmenu.rb', line 118

def on_enter #item
  highlight
  #@parent.window.wmove @row, @col+1  # 2011-09-25 V1.3.1  NO EFFECT
end

#on_leave ⇒ Object 



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# File 'lib/canis/core/widgets/rmenu.rb', line 122

def on_leave
  highlight false
end

#repaint ⇒ Object

menuitem.repaint



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# File 'lib/canis/core/widgets/rmenu.rb', line 146

def repaint # menuitem.repaint
  if @parent.nil? or @parent.window.nil?
  #  return
  end
  r = @row
  c = @col
  ltext = text
  ltext = "* No Items *" if text == :NO_MENUITEMS
  @color_pair  = get_color($reversecolor, @color, @bgcolor)
  #acolor = $reversecolor
  acolor = @color_pair
  acolor = get_color($reversecolor, 'green', @bgcolor) if !@enabled
#      @parent.window.printstring( @row, 0, "|%-*s|" % [@width, ltext], acolor) # changed 2011 2011-09-24  
  @parent.window.printstring( @row, c, "|%-*s|" % [@width, ltext], acolor)
  if @enabled # 2010-09-10 23:56 
  if !@accelerator.nil?
    # FIXME add c earlier 0 was offset
    @parent.window.printstring( r, (@width+1)-@accelerator.length, @accelerator, acolor)
  elsif !@mnemonic.nil?
    m = @mnemonic
    ix = text.index(m) || text.index(m.swapcase)
    if ix
      charm = text[ix,1]
      #@parent.window.printstring( r, ix+1, charm, $datacolor) if !ix.nil?
      # prev line changed since not working in vt100 and vt200
      @parent.window.printstring( r, ix+1, charm, $reversecolor, 'reverse') if !ix.nil?
    end
  end
  #@parent.window.wmove r, c # NO EFFECT
  end
end

#to_s ⇒ Object 



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# File 'lib/canis/core/widgets/rmenu.rb', line 94

def to_s
  "#{@text} #{@accelerator}"
end