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 35

def initialize(namespace, expression, type)
  super()
  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 = java.util.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 68

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

  super(listener);
  @listenerCount += 1
end

#getValueObject


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# File 'lib/fxmlloader/j8_expression_value.rb', line 64

def getValue()
  return RubyWrapperBeanAdapter.coerce(@expression.evaluate(@namespace), @type);
end

#monitorArgumentsObject


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# File 'lib/fxmlloader/j8_expression_value.rb', line 86

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 77

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

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

#unmonitorArgumentsObject


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# File 'lib/fxmlloader/j8_expression_value.rb', line 92

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