Class: Module

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

Overview

}}}

Instance Method Summary collapse

Instance Method Details

#dsl_accessor(*symbols) ⇒ Object

also creates a attr_writer so you can use =.

2011-10-2 V1.3.1 Now returning self, so i can chain calls



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

def dsl_accessor(*symbols)
  symbols.each { |sym|
    class_eval %{
      def #{sym}(*val)
        if val.empty?
          @#{sym}
        else
          @#{sym} = val.size == 1 ? val[0] : val
          self # 2011-10-2 
        end
      end
    # can the next bypass validations
  attr_writer sym 
    }
  }
end

#dsl_property(*symbols) ⇒ Object

Besides creating getters and setters, this also fires property change handler if the value changes, and after the object has been painted once.

2011-10-2 V1.3.1 Now returning self, so i can chain calls



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# File 'lib/canis/core/widgets/rwidget.rb', line 90

def dsl_property(*symbols)
  symbols.each { |sym|
    class_eval %{
      def #{sym}(*val)
        if val.empty?
          @#{sym}
        else
          oldvalue = @#{sym}
          tmp = val.size == 1 ? val[0] : val
          newvalue = tmp
          if @_object_created.nil?
             @#{sym} = tmp
          end
          return(self) if @_object_created.nil?

          if oldvalue != newvalue
            # trying to reduce calls to fire, when object is being created
             begin
               fire_property_change("#{sym}", oldvalue, newvalue) if !oldvalue.nil?
               @#{sym} = tmp
               @config["#{sym}"]=@#{sym}
             rescue PropertyVetoException
                $log.warn "PropertyVetoException for #{sym}:" + oldvalue.to_s + "->  "+ newvalue.to_s
             end
          end # if old
          self
        end # if val
      end # def
  #attr_writer sym
      def #{sym}=val
         #{sym}(val)
      end
    }
  }
end

#dsl_writer(*symbols) ⇒ Object

divert an = call to the dsl_property or accessor call.

This is required if I am bypassing dsl_property for some extra processing as in color and bgcolor
but need the rest of it.



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# File 'lib/canis/core/widgets/rwidget.rb', line 128

def dsl_writer(*symbols)
  symbols.each { |sym|
    class_eval %{
      def #{sym}=(val)
         #{sym}(val)
      end
    }
  }
end