Examples of org.eclipse.core.runtime.ListenerList

org.eclipse.core.runtime.ListenerList
This class is a thread safe list that is designed for storing lists of listeners. The implementation is optimized for minimal memory footprint, frequent reads and infrequent writes. Modification of the list is synchronized and relatively expensive, while accessing the listeners is very fast. Readers are given access to the underlying array data structure for reading, with the trust that they will not modify the underlying array.
A listener list handles the same listener being added multiple times, and tolerates removal of listeners that are the same as other listeners in the list. For this purpose, listeners can be compared with each other using either equality or identity, as specified in the list constructor.
Use the getListeners method when notifying listeners. The recommended code sequence for notifying all registered listeners of say, FooListener.eventHappened, is:
```
 Object[] listeners = myListenerList.getListeners(); for (int i = 0; i < listeners.length; ++i) { ((FooListener) listeners[i]).eventHappened(event); } 
```
This class can be used without OSGi running.
@since org.eclipse.equinox.common 3.2

    this.outlineStrokeMap = new TreeMap();
    this.outlinePaintMap = new TreeMap();
    this.shapeMap = new TreeMap();
    this.itemLabelPaintMap = new TreeMap();


    this.listenerList = new ListenerList();
  }

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    this.labelAnchor = RectangleAnchor.TOP_LEFT;
    this.labelOffset = new RectangleInsets(3, 3, 3, 3);
    this.labelOffsetType = LengthAdjustmentType.CONTRACT;
    this.labelTextAnchor = TextAnchor.CENTER;


    this.listenerList = new ListenerList();
  }

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    this.tickMarkInsideLength = DEFAULT_TICK_MARK_INSIDE_LENGTH;
    this.tickMarkOutsideLength = DEFAULT_TICK_MARK_OUTSIDE_LENGTH;


    this.plot = null;


    this.listenerList = new ListenerList();
  }

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  /**
   * Create a new SimpleSelectionProvider
   */
  public SimpleSelectionProvider() {
    
    fSelectionChangedListeners= new ListenerList();
  }

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      throw new NullPointerException(
          "Cannot add a null execution listener"); //$NON-NLS-1$
    }


    if (executionListeners == null) {
      executionListeners = new ListenerList(ListenerList.IDENTITY);


      // Add an execution listener to every command.
      executionListener = new ExecutionListener();
      final Iterator commandItr = handleObjectsById.values().iterator();
      while (commandItr.hasNext()) {

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      throw new NullPointerException(
          "Cannot add a null execution listener"); //$NON-NLS-1$
    }


    if (executionListeners == null) {
      executionListeners = new ListenerList(ListenerList.IDENTITY);
    }


    executionListeners.add(executionListener);
  }

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                    handleContendChanged();
                }
            });
        }
        this.control = viewer.getTable();
        listeners = new ListenerList();
        viewer.setContentProvider(this);
    }

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    }
  }


  final void addActionSetsListener(final IActionSetsListener listener) {
    if (actionSetListeners == null) {
      actionSetListeners = new ListenerList();
    }


    actionSetListeners.add(listener);
  }

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  }


  @Override
  public void createPartControl(Composite parent) {


    logEventListeners = new ListenerList();


    Composite top = new Composite(parent, SWT.NONE);
    GridLayout layout = new GridLayout();
    layout.marginHeight = 0;
    layout.marginWidth = 0;

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  private static ExportUtils instance;


  private XStream xstream;


  private ExportUtils() {
    saveListeners = new ListenerList();
    xstream = new XStream();
    xstream.alias("logentry", Entry.class);
    xstream.alias("sequence", SequenceStoreObject.class);
  }

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