Class: KeyPathMonitor

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

Defined Under Namespace

Classes: ChangeListenerImpl, ListChangeImpl, MapChangeImpl

Instance Method Summary collapse

Constructor Details

#initialize(this, keyPathIterator) ⇒ KeyPathMonitor

Returns a new instance of KeyPathMonitor.



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# File 'lib/fxmlloader/j8_expression_value.rb', line 146

def initialize(this, keyPathIterator)
  @key = keyPathIterator.next();
  @this = this


  @listChangeListener = ListChangeImpl.new(self)


  @mapChangeListener = MapChangeImpl.new(self)


  @propertyChangeListener = ChangeListenerImpl.new(self)

  if (keyPathIterator.hasNext())
    @next = KeyPathMonitor.new(this, keyPathIterator);
  else
    @next = nil;
  end
end

Instance Method Details

#list_changed(change) ⇒ Object 



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# File 'lib/fxmlloader/j8_expression_value.rb', line 166

def list_changed(change)
  while (change.next())
    index = @key.to_i

    if (index >= change.getFrom() && index < change.getTo())
      @this.fireValueChangedEvent();
      remonitor();
    end
  end
end

#map_changed(change) ⇒ Object 



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# File 'lib/fxmlloader/j8_expression_value.rb', line 177

def map_changed(change)
  if (@key == (change.getKey()))
    @this.fireValueChangedEvent();
    remonitor();
  end
end

#monitor(namespace) ⇒ Object 



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# File 'lib/fxmlloader/j8_expression_value.rb', line 192

def monitor(namespace)
  if (namespace.is_a? ObservableList)
    old_verbose = $VERBOSE
    begin
      $VERBOSE = nil
      namespace.addListener @listChangeListener
    ensure
      # always re-set to old value, even if block raises an exception
      $VERBOSE = old_verbose
    end
  elsif (namespace.is_a? ObservableMap)
    old_verbose = $VERBOSE
    begin
      $VERBOSE = nil
      namespace.addListener @mapChangeListener
    ensure
      # always re-set to old value, even if block raises an exception
      $VERBOSE = old_verbose
    end
  else
    namespaceAdapter = RubyWrapperBeanAdapter.for(namespace);
    propertyModel = namespaceAdapter.getPropertyModel(@key).to_java
    if (propertyModel != nil)
      old_verbose = $VERBOSE
      begin
        $VERBOSE = nil
        propertyModel.addListener @propertyChangeListener
      ensure
        # always re-set to old value, even if block raises an exception
        $VERBOSE = old_verbose
      end
    end

    @namespace = namespaceAdapter;
  end

  @namespace = namespace;

  if (@next != nil)
    value = Expression.get(@namespace, @key)
    if (value != nil)
      @next.monitor(value);
    end
  end
end

#normal_changed(observable, oldValue, newValue) ⇒ Object 



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# File 'lib/fxmlloader/j8_expression_value.rb', line 184

def normal_changed(observable, oldValue, newValue)
  if (@key == (observable.getName()))

    @this.fireValueChangedEvent();
    remonitor();
  end
end

#remonitor ⇒ Object 



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# File 'lib/fxmlloader/j8_expression_value.rb', line 280

def remonitor()
  if (@next != nil)
    @next.unmonitor();
    value = Expression.get(@namespace, @key);
    if (value != nil)
      @next.monitor(value);
    end
  end
end

#unmonitor ⇒ Object 



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# File 'lib/fxmlloader/j8_expression_value.rb', line 238

def unmonitor()
  if (@namespace.is_a? ObservableList)
    old_verbose = $VERBOSE
    begin
      $VERBOSE = nil
      @namespace.removeListener @listChangeListener
    ensure
      # always re-set to old value, even if block raises an exception
      $VERBOSE = old_verbose
    end
  elsif (@namespace.is_a? ObservableMap)
    old_verbose = $VERBOSE
    begin
      $VERBOSE = nil
      @namespace.removeListener @mapChangeListener
    ensure
      # always re-set to old value, even if block raises an exception
      $VERBOSE = old_verbose
    end
  elsif (@namespace != nil)
    namespaceAdapter = @namespace;
    propertyModel = namespaceAdapter.getPropertyModel(@key);

    if (propertyModel != nil)
      old_verbose = $VERBOSE
      begin
        $VERBOSE = nil
        propertyModel.removeListener @propertyChangeListener
      ensure
        # always re-set to old value, even if block raises an exception
        $VERBOSE = old_verbose
      end
    end
  end

  @namespace = nil;

  if (@next != nil)
    @next.unmonitor();
  end
end