Class: Qt::RubySignalAction

Inherits:
QtJambi::QObject
  • Object
show all
Includes:
SignalActions
Defined in:
lib/qt_connect/qt_jbindings.rb

Overview

RubySignalAction is the Ruby class which implements the functionality to activate a Ruby Block or Object Method as a result of a Qt emitted Signal the Ruby method names match the names of the Java interface SignalActions: (see SignalActions.java)

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(receiver = nil, method = nil, &block) ⇒ RubySignalAction

Returns a new instance of RubySignalAction.



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# File 'lib/qt_connect/qt_jbindings.rb', line 184

def initialize(receiver=nil,method=nil,&block)
  super()
  @receiver=receiver
  @method=method
  @block=block
  @args=[]
end

Instance Attribute Details

#block ⇒ Object

Returns the value of attribute block.



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# File 'lib/qt_connect/qt_jbindings.rb', line 183

def block
  @block
end

#method ⇒ Object

Returns the value of attribute method.



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# File 'lib/qt_connect/qt_jbindings.rb', line 183

def method
  @method
end

#receiver ⇒ Object

Returns the value of attribute receiver.



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# File 'lib/qt_connect/qt_jbindings.rb', line 183

def receiver
  @receiver
end

Instance Method Details

#append_args(*args) ⇒ Object 



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# File 'lib/qt_connect/qt_jbindings.rb', line 192

def append_args(*args)
  @args=args
end

#emit(a) ⇒ Object 



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# File 'lib/qt_connect/qt_jbindings.rb', line 206

def emit(a)
  args=a+@args
  n=nil
  if @method && (md=@method.to_s.match(/([0-9]*)(.+)/x)) #??????????????????
    n=md[1].to_i unless md[1]==''
    @method=md[2].gsub('()','').to_sym
  end
  if (m=args.size)>0
    @block.call(*args) if @block
    if @receiver && @method
      #cap the number of arguments to number wanted by receiver
      #e.g. triggered uses signal1 iso signal0 as in example
      n ||=@receiver.method(@method).arity
      if (n==0)
        @receiver.send(@method)
      else
        args.slice!(0,n) if (m>n) && (n>0)
        @receiver.send(@method,*args)
      end
    end
  else
    @block.call if @block
    @receiver.send(@method) if @receiver && @method
  end
end