Class: Watobo::Gui::ViewerHandlerCtrl

Inherits:
FXHorizontalFrame
  • Object
show all
Defined in:
lib/watobo/gui/custom_viewer.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(parent, opts = { :opts => LAYOUT_FILL_X|LAYOUT_SIDE_BOTTOM, :padding => 0 }) ⇒ ViewerHandlerCtrl

Returns a new instance of ViewerHandlerCtrl.



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# File 'lib/watobo/gui/custom_viewer.rb', line 12

def initialize(parent, opts = { :opts => LAYOUT_FILL_X|LAYOUT_SIDE_BOTTOM, :padding => 0 })
  super parent, opts
  @parent = parent
  #handler_ctrl_frame = FXHorizontalFrame.new(self, :opts => LAYOUT_FILL_X, :padding => 0)
  FXLabel.new(self, "View Handler:")
  @handler_status_lbl = FXLabel.new(self, "None")
  @handler_status_lbl.backColor = "red"
  add_handler_btn = FXButton.new(self, "add", nil, nil, 0, FRAME_RAISED|LAYOUT_FILL_Y|LAYOUT_RIGHT)
  add_handler_btn.connect(SEL_COMMAND){ add_handler }
  reload_handler_btn = FXButton.new(self, "reload", nil, nil, 0, FRAME_RAISED|LAYOUT_FILL_Y|LAYOUT_RIGHT)
  reload_handler_btn.connect(SEL_COMMAND){ load_handler(@handler_file) }
  reset_handler_btn = FXButton.new(self, "reset", nil, nil, 0, FRAME_RAISED|LAYOUT_FILL_Y|LAYOUT_RIGHT)
  
  reset_handler_btn.connect(SEL_COMMAND){
    @handler = nil
    @handler_file = nil
    @handler_status_lbl.text =  "None"
    @handler_status_lbl.backColor = "red"
  }
end

Instance Attribute Details

#handler ⇒ Object (readonly)

Returns the value of attribute handler.



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# File 'lib/watobo/gui/custom_viewer.rb', line 6

def handler
  @handler
end

Instance Method Details

#add_handler ⇒ Object 



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# File 'lib/watobo/gui/custom_viewer.rb', line 34

def add_handler        
   handler_filename = FXFileDialog.getOpenFilename(self, "Select handler file", @handler_path, "*.rb\n*")
    if handler_filename != "" then
      if File.exists?(handler_filename) then
        @handler_file = handler_filename
        @handler_path = File.dirname(handler_filename) + "/"
        load_handler(handler_filename)
      end
    end
  
end

#call_handler(object) ⇒ Object 



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# File 'lib/watobo/gui/custom_viewer.rb', line 77

def call_handler(object)
  return object if @handler.nil?
  begin
    result = @handler.call(object)
    return result       
  rescue => bang
    result = bang.to_s
    result << bang.backtrace.join("\n")
    return result
  end
  
end

#has_handler? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/watobo/gui/custom_viewer.rb', line 8

def has_handler?
  !@handler.nil?
end

#load_handler(file) ⇒ Object 



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# File 'lib/watobo/gui/custom_viewer.rb', line 46

def load_handler(file)
  @handler = nil
  @handler_status_lbl.text = "None"
  @handler_status_lbl.backColor = "red"
  
  return false if file.nil?
  return false unless File.exist? file
  begin
    source = File.read(file)
    #puts source
    result = eval(source)
    if result.respond_to? :call
      @handler = result
      @handler_status_lbl.text = "#{File.basename(file).gsub(/\.rb$/,'')}"
      @handler_status_lbl.textColor = 'black'
      @handler_status_lbl.backColor = 'green'
      @parent.setText
    end
    return true
               
   rescue SyntaxError, LocalJumpError, NameError => e
     out = e.to_s
     out << e.backtrace.join("\n")
   rescue => bang
     out = bang
     out << bang.backtrace.join("\n")
   end
   puts out
   return false
end