Class: Element

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(current, xmlStreamReader, loadListener, parentLoader) ⇒ Element

Returns a new instance of Element.



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# File 'lib/fxmlloader/elts.rb', line 10

def initialize(current, xmlStreamReader, loadListener, parentLoader)
  @parent = current;
  @lineNumber = xmlStreamReader.getLocation().getLineNumber();
  @current = current;
  @xmlStreamReader = xmlStreamReader
  @loadListener = loadListener
  @value = nil
  @valueAdapter = nil
  @eventHandlerAttributes = []
  @instancePropertyAttributes = []
  @staticPropertyAttributes = []
  @staticPropertyElements = []
  @parentLoader = parentLoader
end

Instance Attribute Details

#current ⇒ Object

Returns the value of attribute current.



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# File 'lib/fxmlloader/elts.rb', line 8

def current
  @current
end

#eventHandlerAttributes ⇒ Object

Returns the value of attribute eventHandlerAttributes.



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# File 'lib/fxmlloader/elts.rb', line 9

def eventHandlerAttributes
  @eventHandlerAttributes
end

#instancePropertyAttributes ⇒ Object

Returns the value of attribute instancePropertyAttributes.



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# File 'lib/fxmlloader/elts.rb', line 9

def instancePropertyAttributes
  @instancePropertyAttributes
end

#lineNumber ⇒ Object

Returns the value of attribute lineNumber.



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# File 'lib/fxmlloader/elts.rb', line 8

def lineNumber
  @lineNumber
end

#loadListener ⇒ Object

Returns the value of attribute loadListener.



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# File 'lib/fxmlloader/elts.rb', line 8

def loadListener
  @loadListener
end

#parent ⇒ Object

Returns the value of attribute parent.



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# File 'lib/fxmlloader/elts.rb', line 8

def parent
  @parent
end

#parentLoader ⇒ Object

Returns the value of attribute parentLoader.



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# File 'lib/fxmlloader/elts.rb', line 8

def parentLoader
  @parentLoader
end

#staticPropertyAttributes ⇒ Object

Returns the value of attribute staticPropertyAttributes.



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# File 'lib/fxmlloader/elts.rb', line 9

def staticPropertyAttributes
  @staticPropertyAttributes
end

#staticPropertyElements ⇒ Object

Returns the value of attribute staticPropertyElements.



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# File 'lib/fxmlloader/elts.rb', line 9

def staticPropertyElements
  @staticPropertyElements
end

#value ⇒ Object

Returns the value of attribute value.



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# File 'lib/fxmlloader/elts.rb', line 9

def value
  @value
end

#valueAdapter ⇒ Object

Returns the value of attribute valueAdapter.



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# File 'lib/fxmlloader/elts.rb', line 9

def valueAdapter
  @valueAdapter
end

#xmlStreamReader ⇒ Object

Returns the value of attribute xmlStreamReader.



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# File 'lib/fxmlloader/elts.rb', line 8

def xmlStreamReader
  @xmlStreamReader
end

Instance Method Details

#add(element) ⇒ Object 



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# File 'lib/fxmlloader/elts.rb', line 56

def add(element)
  dputs callz + "about to add #{element} to #{value.to_java}"
  # If value is a list, add element to it; otherwise, get the value
  # of the default property, which is assumed to be a list and add
  # to that (coerce to the appropriate type)
  if (@value.kind_of?(Enumerable) || @value.java_kind_of?(java.util.List))
    value.to_java
  else
    type = value.java_class
    defaultProperty = type.annotation(DefaultProperty.java_class);
    defaultPropertyName = defaultProperty.to_java.value();

    # Get the list value
    list =  getProperties[defaultPropertyName]

    # Coerce the element to the list item type
    if (!Map.java_class.assignable_from?(type))
      listType = @valueAdapter.getGenericType(defaultPropertyName);
      element = RubyWrapperBeanAdapter.coerce(element, RubyWrapperBeanAdapter.getListItemType(listType));
    end
    list = list.to_java if list.class == Java::JavaObject
    list
  end.add(element)
end

#addEventHandler(attribute, eventHandler) ⇒ Object 



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# File 'lib/fxmlloader/elts.rb', line 509

def addEventHandler(attribute, eventHandler)
  if (attribute.name.end_with?(FXL::CHANGE_EVENT_HANDLER_SUFFIX))
    i = FXL::EVENT_HANDLER_PREFIX.length();
    j = attribute.name.length() - FXL::CHANGE_EVENT_HANDLER_SUFFIX.length();
    if (i == j)
      if (@value.is_a? ObservableList)
        list =  @value;
        list.addListener(ObservableListChangeAdapter.new(list, eventHandler));
      elsif (@value.is_a? ObservableMap)
        map = @value;
        map.addListener(ObservableMapChangeAdapter.new(map, eventHandler));
      else
        raise LoadException.new("Invalid event source.");
      end
    else
      key = attribute.name[i].downcase + attribute.name[i + 1, j]
      propertyModel = getValueAdapter().getPropertyModel(key);
      if (propertyModel == nil)
        raise LoadException.new(@value.getClass().getName() + " does not define" + " a property model for \"" + key + "\".");
      end

      propertyModel.addListener(PropertyChangeAdapter.new(@value,  eventHandler));
    end
  else
    getValueAdapter[attribute.name] =  eventHandler
  end
end

#applyProperty(name, sourceType, value) ⇒ Object 



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# File 'lib/fxmlloader/elts.rb', line 447

def applyProperty(name,  sourceType, value)
  if (sourceType == nil)
    getProperties[name] = value
  else
    RubyWrapperBeanAdapter.put3(@value, sourceType, name, value);
  end
end

#callz ⇒ Object 



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# File 'lib/fxmlloader/elts.rb', line 27

def callz
  numz = 1
  pppn = @parent
  while pppn
    numz+=1
    pppn = pppn.parent
  end
  (" " * numz) + @lineNumber.to_s + ": "
end

#getProperties ⇒ Object 



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# File 'lib/fxmlloader/elts.rb', line 133

def getProperties()
  return (isTyped()) ? getValueAdapter() : @value;
end

#getValueAdapter ⇒ Object 



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

def getValueAdapter()
  if (@valueAdapter == nil)
    dputs callz + "trying to get itqq"
    dprint callz
    dprint @value
    dputs @value.class
    dputs caller
    if @value.class.to_s == "Java::JavafxFxml::ObjectBuilder"
      dputs caller
    end
    if @value.is_a? java.lang.Object
      dputs callz + "trying to call wrapper"
    @valueAdapter = RubyWrapperBeanAdapter.new(@value);
    else
      dputs callz + "trying to call ruby object wrapper"
      @valueAdapter = RubyObjectWrapperBeanAdapter.new(@value)
    end
    dputs callz + "got"
  end
  return @valueAdapter;
end

#isBidirectionalBindingExpression(aValue) ⇒ Object 



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# File 'lib/fxmlloader/elts.rb', line 272

def isBidirectionalBindingExpression(aValue)
  return aValue.start_with?(FXL::BI_DIRECTIONAL_BINDING_PREFIX);
end

#isBindingExpression(aValue) ⇒ Object 



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# File 'lib/fxmlloader/elts.rb', line 264

def isBindingExpression(aValue)
  dputs callz + "checking if '#{aValue}' is a binding prefix..."
  # TODO: BINDING_EXPRESSION_PREFIX == ${
  q =  aValue.start_with?("${") && aValue.end_with?(FXL::BINDING_EXPRESSION_SUFFIX);
  dputs callz + "it is? #{q.inspect}"
  q
end

#isCollection ⇒ Object 



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# File 'lib/fxmlloader/elts.rb', line 37

def isCollection()
  # Return true if value is a list, or if the value's type defines
  # a default property that is a list
  collection = false
  if (@value.kind_of?(Enumerable) || @value.java_kind_of?(Java.java.util.List))
    collection = true;
  else
    defaultProperty = @value.java_class.annotation(DefaultProperty.java_class);

    if (defaultProperty != nil)
      collection = getProperties()[defaultProperty.value].java_kind_of?(Java.java.util.List)
    else
      collection = false;
    end
  end
  dputs callz + "Is it a collection? #{collection.inspect} <= #{@value.java_class}"
  return collection;
end

#isTyped ⇒ Object 



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# File 'lib/fxmlloader/elts.rb', line 102

def isTyped()
  dputs callz + "checking if typed"
  dp @value.class
  dp @value
  q =  !(@value.java_kind_of? Java::java.util.Map or @value.is_a? Hash  );
  dputs callz + "type result: #{q.inspect}"
  q
end

#populateArrayFromString(type, stringValue) ⇒ Object

TODO: fix this udp to use java arrays



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# File 'lib/fxmlloader/elts.rb', line 394

def populateArrayFromString( type, stringValue)

  propertyValue = nil;
  # Split the string and set the values as an array
  componentType = type.getComponentType();

  if (stringValue.length > 0)
    values = stringValue.split(FXL::ARRAY_COMPONENT_DELIMITER);
    propertyValue = Array.newInstance(componentType, values.length);
    values.length.times do |i|
      Array.set(propertyValue, i,
        RubyWrapperBeanAdapter.coerce(resolvePrefixedValue(values[i].strip),
          type.getComponentType()));
    end
  else
    propertyValue = Array.newInstance(componentType, 0);
  end
  return propertyValue;
end

#populateListFromString(valueAdapter, listPropertyName, stringValue) ⇒ Object

TODO: check the types



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# File 'lib/fxmlloader/elts.rb', line 421

def populateListFromString( valueAdapter, listPropertyName,stringValue)
  # Split the string and add the values to the list
  list =  valueAdapter[listPropertyName].to_java
  listType = valueAdapter.getGenericType(listPropertyName);
  itemType =  RubyWrapperBeanAdapter.getGenericListItemType(listType);

  if (itemType.is_a? ParameterizedType)
    itemType = ( itemType).getRawType();
  end

  if (stringValue.length() > 0)
    values = stringValue.split(FXL::ARRAY_COMPONENT_DELIMITER)

    for  aValue in values
      aValue = aValue.strip
      list.add(
        RubyWrapperBeanAdapter.coerce(resolvePrefixedValue(aValue),
          itemType));
    end
  end
end

#processAttribute(prefix, localName, value) ⇒ Object 



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# File 'lib/fxmlloader/elts.rb', line 168

def processAttribute(prefix, localName, value)
  if (prefix == nil)
    # Add the attribute to the appropriate list
    if (localName.start_with?(FXL::EVENT_HANDLER_PREFIX))
      if (@loadListener != nil)
        @loadListener.readEventHandlerAttribute(localName, value);
      end
      dputs callz + "found eventHandler prefix #{prefix}, #{localName}, #{value}"
      eventHandlerAttributes <<(Attribute.new(localName, nil, value));
    else
      i = localName.rindex('.');

      if (i == nil)
        # The attribute represents an instance property
        if (@loadListener != nil)
          @loadListener.readPropertyAttribute(localName, nil, value);
        end

      dputs callz + "found property attrib #{prefix}, #{localName}, #{value}"
        instancePropertyAttributes << (Attribute.new(localName, nil, value));
      else
        # The attribute represents a static property
        name = localName[(i + 1)..-1];
        sourceType = parentLoader.getType(localName[0, i]);

      dputs callz + "found static property #{prefix}, #{localName}, #{value}"
      dputs callz + "and its #{sourceType}, #{staticLoad}"
        if (sourceType != nil)
          if (@loadListener != nil)
            @loadListener.readPropertyAttribute(name, sourceType, value);
          end

          @staticPropertyAttributes << (Attribute.new(name, sourceType, value));
        elsif (staticLoad)
          if (@loadListener != nil)
            @loadListener.readUnknownStaticPropertyAttribute(localName, value);
          end
        else
          raise LoadException.new(localName + " is not a valid attribute.");
        end
      end

    end
  else
    raise LoadException.new(prefix + ":" + localName +
        " is not a valid attribute.");
  end
end

#processCharacters ⇒ Object

Raises:



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# File 'lib/fxmlloader/elts.rb', line 156

def processCharacters()
  raise LoadException.new("Unexpected characters in input stream.");
end

#processEndElement ⇒ Object 



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# File 'lib/fxmlloader/elts.rb', line 152

def processEndElement()
  # No-op
end

#processEventHandlerAttributes ⇒ Object 



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# File 'lib/fxmlloader/elts.rb', line 455

def processEventHandlerAttributes()
  if (@eventHandlerAttributes.length > 0 && !parentLoader.staticLoad)
    for attribute in @eventHandlerAttributes
      eventHandler = nil;
      attrValue = attribute.value;

      if (attrValue.start_with?(FXL::CONTROLLER_METHOD_PREFIX))
        attrValue = attrValue[FXL::CONTROLLER_METHOD_PREFIX.length..-1]
        if (!attrValue.start_with?(FXL::CONTROLLER_METHOD_PREFIX))
          if (attrValue.length() == 0)
            raise LoadException.new("Missing controller method.");
          end
          if (parentLoader.controller == nil)
            dputs "eek"
            raise LoadException.new("No controller specified. ");
          end

          #            method = parentLoader.controller.method(attrValue)
          #
          #            if (method == nil)
          #              raise LoadException.new("Controller method \"" + attrValue + "\" not found.");
          #            end
          eventHandler = EventHandlerWrapper.new(parentLoader.controller, attrValue)
        end

      elsif (attrValue.start_with?(FXL::EXPRESSION_PREFIX))
        attrValue = attrValue[FXL::EXPRESSION_PREFIX.length..-1]
        if (attrValue.length() == 0)
          raise LoadException.new("Missing expression reference.");
        end
        dputs callz + "exprValue!' #{attrValue}'"
        expression = Expression.get(@namespace, KeyPath.parse(attrValue));
        if (expression.is_a? EventHandler)
          eventHandler = expression;
        end

      end
      if (eventHandler == nil)
        if (attrValue.length() == 0 || @scriptEngine == nil)
          raise LoadException.new("Error resolving " + attribute.name + "='" + attribute.value +
              "', either the event handler is not in the Namespace or there is an error in the script.");
        end

        eventHandler = ScriptEventHandler.new(attrValue, @scriptEngine);
      end
      # Add the handler
      if (eventHandler != nil)

        addEventHandler(attribute, eventHandler);
      end
    end
  end
end

#processInstancePropertyAttributes ⇒ Object 



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# File 'lib/fxmlloader/elts.rb', line 160

def processInstancePropertyAttributes()
  if (@instancePropertyAttributes.length > 0)
    for attribute in @instancePropertyAttributes
      processPropertyAttribute(attribute);
    end
  end
end

#processPropertyAttribute(attribute) ⇒ Object 



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# File 'lib/fxmlloader/elts.rb', line 217

def processPropertyAttribute(attribute)
  value = attribute.value;
  if (isBindingExpression(value))
    dputs callz  + "is a binding !"
    # Resolve the expression

    if (attribute.sourceType != nil)
      raise LoadException.new("Cannot bind to static property.");
    end

    if (!isTyped())
      raise LoadException.new("Cannot bind to untyped object.");
    end

    # TODO We may want to identify binding properties in processAttribute()
    # and apply them after build() has been called
    if (@value.is_a? Builder)
      raise LoadException.new("Cannot bind to builder property.");
    end

    value = value[2..-2]    # TODO: BINDING_EXPRESSION_PREFIX == ${
      #value.length() - 1];
    # TODO: this only works for 7, not 8
    dputs "getting expression value of '#{value}' with #{parentLoader.namespace}"
    expression = Expression.valueOf(value);
    dputs callz + "got the expression as '#{expression}'"
    dp expression
    # Create the binding
    targetAdapter = RubyWrapperBeanAdapter.new(@value);
    dputs callz + "target adapter is #{targetAdapter} from #{value}"
    propertyModel = targetAdapter.getPropertyModel(attribute.name).to_java
    type = targetAdapter.getType(attribute.name);
    dputs callz + "prop model is #{propertyModel.inspect} and type is #{type.inspect}"
    if (propertyModel.is_a? Property)
      dputs callz + "checking out value using #{parentLoader.namespace}"
      #expression.value_property.addListener(JRExpressionTargetMapping.new(expression, getProperties(), Expression.split(value)));
      ( propertyModel).bind(RRExpressionValue.new(parentLoader.namespace, expression, type));
      dputs callz + "bound!"
    end
  elsif (isBidirectionalBindingExpression(value))
    raise UnsupportedOperationException.new("This feature is not currently enabled.");
  else
    dputs callz + "processing 3 for #{attribute.sourceType}, #{attribute.name}, #{value}"
    processValue3(attribute.sourceType, attribute.name, value);
  end
end

#processStartElement ⇒ Object 



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# File 'lib/fxmlloader/elts.rb', line 137

def processStartElement()
  n = @xmlStreamReader.getAttributeCount()
  n.times do |i|
    prefix = @xmlStreamReader.getAttributePrefix(i);
    localName = @xmlStreamReader.getAttributeLocalName(i);
    value = @xmlStreamReader.getAttributeValue(i);

    if (@loadListener && prefix && prefix == (FXL::FX_NAMESPACE_PREFIX))
      @loadListener.readInternalAttribute(prefix + ":" + localName, value);
    end

    processAttribute(prefix, localName, value);
  end
end

#processValue3(sourceType, propertyName, aValue) ⇒ Object 



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# File 'lib/fxmlloader/elts.rb', line 276

def processValue3( sourceType,  propertyName,  aValue)


  processed = false;
  #process list or array first
  if (sourceType == nil && isTyped())
    dputs callz + "getting value adptr"
    lvalueAdapter = getValueAdapter();
    type = lvalueAdapter.getType(propertyName);

    if (type == nil)
      dputs "Processing values3 fails on: "
      dp sourceType, propertyName, aValue
      dp lvalueAdapter
      dp caller
      raise PropertyNotFoundException.new("Property \"" + propertyName          + "\" does not exist" + " or is read-only.");
    end
    dputs "checking assignable"
    if (List.java_class.assignable_from?(type) && lvalueAdapter.read_only?(propertyName))
      populateListFromString(lvalueAdapter, propertyName, aValue);
      processed = true;
    elsif false #TODO: fix type.ruby_class.ancestors.include? Enumerable
      applyProperty(propertyName, sourceType, populateArrayFromString(type, aValue));
      processed = true;
    end
  end
  dputs callz + "276"
  if (!processed)
    dputs callz + "Must appky it"
    applyProperty(propertyName, sourceType, resolvePrefixedValue(aValue));
    dputs callz + "280"
    processed = true;
  end
  return processed;
end

#resolvePrefixedValue(aValue) ⇒ Object

Resolves value prefixed with RELATIVE_PATH_PREFIX and RESOURCE_KEY_PREFIX.



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# File 'lib/fxmlloader/elts.rb', line 316

def resolvePrefixedValue(aValue)
  if (aValue.start_with?(FXL::ESCAPE_PREFIX))
    aValue = aValue[FXL::ESCAPE_PREFIX.length..-1]

    if (aValue.length == 0 || !(aValue.start_with?(FXL::ESCAPE_PREFIX) ||
            aValue.start_with?(FXL::RELATIVE_PATH_PREFIX) ||
            aValue.start_with?(FXL::RESOURCE_KEY_PREFIX) ||
            aValue.start_with?(FXL::EXPRESSION_PREFIX) ||
            aValue.start_with?(FXL::BI_DIRECTIONAL_BINDING_PREFIX)))
      raise LoadException.new("Invalid escape sequence.");
    end
    return aValue;
  elsif (aValue.start_with?(FXL::RELATIVE_PATH_PREFIX))
    aValue = aValue[FXL::RELATIVE_PATH_PREFIX.length..-1]
    if (aValue.length == 0)
      raise LoadException.new("Missing relative path.");
    end
    if (aValue.start_with?(FXL::RELATIVE_PATH_PREFIX))
      # The prefix was escaped
      warnDeprecatedEscapeSequence(RELATIVE_PATH_PREFIX);
      return aValue;
    else
      begin
        return (aValue[0] == '/') ? classLoader.getResource(aValue[1..-1]).to_s : URL.new(parentLoader.location, aValue).to_s
      rescue MalformedURLException => e
        dp e
        dputs "#{parentLoader.location} + /+ #{aValue}"
        raise "whoops"
      end
    end
  elsif (aValue.start_with?(FXL::RESOURCE_KEY_PREFIX))
    aValue = aValue[FXL::RESOURCE_KEY_PREFIX.length..-1]
    if (aValue.length() == 0)
      raise LoadException.new("Missing resource key.");
    end
    if (aValue.start_with?(FXL::RESOURCE_KEY_PREFIX))
      # The prefix was escaped
      warnDeprecatedEscapeSequence(FXL::RESOURCE_KEY_PREFIX);
      return aValue;
    else
      # Resolve the resource value
      if (@resources == nil)
        raise LoadException.new("No resources specified.");
      end
      if (!@resources.has_key?(aValue))
        raise LoadException.new("Resource \"" + aValue + "\" not found.");
      end
      return @resources.getString(aValue);
    end
  elsif (aValue.start_with?(FXL::EXPRESSION_PREFIX))
    aValue = aValue[FXL::EXPRESSION_PREFIX.length..-1]
    if (aValue.length() == 0)
      raise LoadException.new("Missing expression.");
    end
    if (aValue.start_with?(FXL::EXPRESSION_PREFIX))
      # The prefix was escaped
      warnDeprecatedEscapeSequence(FXL::EXPRESSION_PREFIX);
      return aValue;
    elsif (aValue == (FXL::NULL_KEYWORD))
      # The attribute value is nil
      return nil;
    end
    dputs callz + "Getting expression '#{aValue}'"
    # remove all nils, them add one in at the end so [0] returns nil if empty
    q = (KeyPath.parse(aValue).map{|i|parentLoader.namespace[i]} - [nil] + [nil])[0]
    dputs callz + "Parsed Expression! #{q};;;;#{q.inspect}"
    return q
  end
  return aValue;
end

#set(value) ⇒ Object 



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# File 'lib/fxmlloader/elts.rb', line 81

def set(value)
  unless @value
    raise LoadException.new("Cannot set value on this element.");
  end

  # Apply value to this element's properties
  type = @value.java_class;
  defaultProperty = type.getAnnotation(DefaultProperty.java_class);
  if (defaultProperty == nil)
    raise LoadException.new("Element does not define a default property.");
  end

  getProperties[defaultProperty.value] = value
end

#staticLoad ⇒ Object 



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# File 'lib/fxmlloader/elts.rb', line 24

def staticLoad
  @parentLoader.staticLoad
end

#updateValue(value) ⇒ Object 



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

def updateValue(value)
  dputs callz + "Updating value from #{@value} to #{value.class}"
  @value = value;
  @valueAdapter = nil;
end

#warnDeprecatedEscapeSequence(prefix) ⇒ Object 



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# File 'lib/fxmlloader/elts.rb', line 443

def warnDeprecatedEscapeSequence(prefix)
  puts(prefix + prefix + " is a deprecated escape sequence. "       + "Please use \\" + prefix + " instead.");
end