Class: RRExpressionValue

Inherits:
Object
  • Object
show all
Defined in:
lib/fxmlloader/j8_expression_value.rb

Overview

/**

  • Class representing an observable expression value.

*/

Instance Method Summary collapse

Constructor Details

#initialize(namespace, expression, type) ⇒ RRExpressionValue

Returns a new instance of RRExpressionValue.



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# File 'lib/fxmlloader/j8_expression_value.rb', line 52

def initialize(namespace, expression, type)
  super()
  dputs "Initializing with #{namespace}, #{expression}, #{type}"
  if (namespace == nil) 
    raise "NullPointerException.new();"
  end

  if (expression == nil)
    raise "NullPointerException.new();"
  end

  if (type == nil) 
    raise "NullPointerException.new();"
  end

  @listenerCount = 0;

  @namespace = namespace;
  @expression = expression;
  @type = type;

  arguments = expression.getArguments();
  @argumentMonitors = ArrayList.new(arguments.size());

  for  argument in arguments
    @argumentMonitors.add(KeyPathMonitor.new(self, argument.iterator()));
  end
end

Instance Method Details

#addListener(listener) ⇒ Object 



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# File 'lib/fxmlloader/j8_expression_value.rb', line 87

def addListener( listener) 
  if (@listenerCount == 0) 
    monitorArguments();
  end

  super(listener);
  @listenerCount += 1
end

#getValue ⇒ Object 



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# File 'lib/fxmlloader/j8_expression_value.rb', line 82

def getValue()
  dputs "gettng 8ev for #{self} on #{@expression}"
  return RubyWrapperBeanAdapter.coerce(@expression.evaluate(@namespace), @type);
end

#monitorArguments ⇒ Object 



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# File 'lib/fxmlloader/j8_expression_value.rb', line 105

def monitorArguments() 
  for  argumentMonitor in @argumentMonitors
    argumentMonitor.monitor(@namespace);
  end
end

#removeListener(listener) ⇒ Object 



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# File 'lib/fxmlloader/j8_expression_value.rb', line 96

def removeListener( listener) 
  super(listener);
  @listenerCount-=1

  if (@listenerCount == 0) 
    unmonitorArguments();
  end
end

#unmonitorArguments ⇒ Object 



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# File 'lib/fxmlloader/j8_expression_value.rb', line 111

def unmonitorArguments() 
  for  argumentMonitor in   @argumentMonitors
    argumentMonitor.unmonitor();
  end
end