Class: ScriptEventHandler

Inherits:
Object
  • Object
show all
Includes:
EventHandler
Defined in:
lib/fxmlloader/elts.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(script, scriptEngine) ⇒ ScriptEventHandler

Returns a new instance of ScriptEventHandler.



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# File 'lib/fxmlloader/elts.rb', line 534

def initialize(script, scriptEngine)
  @script = script;
  @scriptEngine = scriptEngine;
end

Instance Attribute Details

#script ⇒ Object (readonly)

Returns the value of attribute script.



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# File 'lib/fxmlloader/elts.rb', line 533

def script
  @script
end

#scriptEngine ⇒ Object (readonly)

Returns the value of attribute scriptEngine.



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# File 'lib/fxmlloader/elts.rb', line 533

def scriptEngine
  @scriptEngine
end

Instance Method Details

#handle(event) ⇒ Object 



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# File 'lib/fxmlloader/elts.rb', line 539

def handle(event)
  # Don't pollute the page namespace with values defined in the script
  engineBindings = @scriptEngine.getBindings(ScriptContext::ENGINE_SCOPE);
  #localBindings = @scriptEngine.createBindings(); # TODO: this causes errors with nashorn in jdk8 by creating a different kind of 
  # script object that doesn't respect the magic nashorn.global object
  localBindings = Java::JavaxScript::SimpleBindings.new
  localBindings.put_all(engineBindings)
  localBindings.put(FXL::EVENT_KEY, event);
  @scriptEngine.setBindings(localBindings, ScriptContext::ENGINE_SCOPE);

  # Execute the script
  begin
    @scriptEngine.eval(@script);
  rescue ScriptException => exception
    raise exception
  end

  # Restore the original bindings
  @scriptEngine.setBindings(engineBindings, ScriptContext::ENGINE_SCOPE);
end