Class: Fox::FXPseudoTarget

Inherits:
FXObject show all
Includes:
Responder
Defined in:
lib/fox16/responder2.rb

Overview

FXPseudoTarget instances act as the message target for any widgets that elect to use the #connect method to map certain message types to blocks.

Constant Summary collapse

@@targets_of_pending_timers = 
{}
@@targets_of_pending_chores = 
{}
@@targets_of_pending_signals = 
{}
@@targets_of_pending_inputs = 
{}

Instance Method Summary collapse

Methods included from Responder

#FXMAPFUNC, #FXMAPFUNCS, #FXMAPTYPE, #FXMAPTYPES, #addMapEntry, #assocIndex, #identifier, #messageMap

Methods inherited from FXObject

#bind, #handle, #load, #save, subclasses

Constructor Details

#initialize ⇒ FXPseudoTarget

Returns an initialized FXPseudoTarget object.



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# File 'lib/fox16/responder2.rb', line 22

def initialize
  super
  @context = {}
end

Instance Method Details

#onHandleMsg(sender, sel, ptr) ⇒ Object

Handle a message from sender, with selector sel and message data ptr.



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# File 'lib/fox16/responder2.rb', line 50

def onHandleMsg(sender, sel, ptr)
  message_type = Fox.FXSELTYPE(sel)
  ctx = @context[message_type]
  callable_object = ctx[:callable]
  params = ctx[:params]
  result = callable_object.call(sender, sel, ptr)
  case message_type
  when SEL_TIMEOUT
    if params[:repeat]
      FXApp.instance.addTimeout(params[:delay], callable_object, params)
    else
      @@targets_of_pending_timers.delete(self)
    end
  when SEL_CHORE
    if params[:repeat]
      FXApp.instance.addChore(callable_object, params)
    else
      @@targets_of_pending_chores.delete(self)
    end
  end
  result
end

#pconnect(message_type, callable_object, params = {}) ⇒ Object

Store an association between a message of type message_type with a callable object.



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# File 'lib/fox16/responder2.rb', line 31

def pconnect(message_type, callable_object, params={})
  @context[message_type] = { :callable => callable_object, :params => params }
  FXMAPTYPE(message_type, :onHandleMsg)
  case message_type
  when SEL_TIMEOUT
    @@targets_of_pending_timers[self] = self
  when SEL_CHORE
    @@targets_of_pending_chores[self] = self
  when SEL_SIGNAL
    @@targets_of_pending_signals[self] = self
  when SEL_IO_READ, SEL_IO_WRITE, SEL_IO_EXCEPT
    @@targets_of_pending_inputs[self] = self
  end
end