Examples of ListenerList

org.apache.commons.net.util.ListenerList
@author Daniel F. Savarese
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

org.eclipse.jface.util.ListenerList
This class is used to maintain a list of listeners, and is used in the implementations of several classes within JFace which allow you to register listeners of various kinds. It is a fairly lightweight object, occupying minimal space when no listeners are registered.
Note that the add method checks for and eliminates duplicates based on identity (not equality). Likewise, the remove method compares based on identity.

Use the getListeners method when notifying listeners. Note that no garbage is created if no listeners are registered. 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); } 
```
@deprecated Please use {@link org.eclipse.core.runtime.ListenerList} instead.Please note that the {@link #ListenerList(int)} and{@link org.eclipse.core.runtime.ListenerList#ListenerList(int)}constructors have different semantics. Please read the javadoc carefully. Also note that the equivalent of {@link #ListenerList()} is actually{@link org.eclipse.core.runtime.ListenerList#ListenerList(int)}with {@link org.eclipse.core.runtime.ListenerList#IDENTITY} asthe argument.
org.eclipse.jgit.events.ListenerList
Manages a thread-safe list of {@link RepositoryListener}s.

Examples of org.eclipse.jface.util.ListenerList

            throw new IllegalArgumentException("Cannot be null: factory."); //$NON-NLS-1$
        }
        this.duplicatesAllowed = duplicatesAllowed;
        this.factory = factory;
        this.listValidator = listValidator;
        listeners = new ListenerList();
        createControl(style, title, items);


        validatorTask = new ValidatorTaskExecutor();
        validatorTask.start();
    }

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Examples of org.eclipse.jface.util.ListenerList

    public ListValueBuilder(Composite parent, boolean ordered,
                            SelectionDialog selectionDialog) {
        super(parent, SWT.NONE);
        this.ordered = ordered;
        this.selectionDialog = selectionDialog;
        this.listeners = new ListenerList();
        createControl();
        // create the list that will contain the items
        itemsList = new ItemsList();
        itemsList.addModifyListener(itemsListModifyListener);
        tableViewer.setInput(itemsList);

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Examples of org.eclipse.jface.util.ListenerList

     * is associated with
     */
    public synchronized void addProjectDeviceRepositoryChangeListener(
            ProjectDeviceRepositoryChangeListener listener,
            IProject project) {
        ListenerList list = (ListenerList) listenerMap.get(project);
        if (list == null) {
            list = new ListenerList();
        }
        list.add(listener);
        listenerMap.put(project, list);
    }

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Examples of org.eclipse.jface.util.ListenerList

     */
    public synchronized void removeProjectDeviceRepositoryChangeListener(
            ProjectDeviceRepositoryChangeListener listener,
            IProject project) {


        ListenerList listeners = (ListenerList) listenerMap.get(project);
        if (listeners != null) {
            listeners.remove(listener);
            if (listeners.size() == 0) {
                listenerMap.remove(project);
            }
        }
    }

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Examples of org.eclipse.jface.util.ListenerList

     * Notify ProjectDeviceRepositoryChangeListeners that there has been
     * a change to a project device repository.
     * @param project the IProject whose device repository has changed
     */
    private synchronized void notifyChangeListeners(IProject project) {
        ListenerList list = (ListenerList) listenerMap.get(project);
        if (list != null) {
            Object listeners [] = list.getListeners();
            for (int i = 0; i < listeners.length; i++) {
                ((ProjectDeviceRepositoryChangeListener) listeners[i]).
                        changed();
            }
        }

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Examples of org.eclipse.jface.util.ListenerList

        if (items == null || items.length == 0) {
            throw new IllegalArgumentException("Cannot be null nor empty: items.");
        }
        this.items = items;
        imageCache = new HashMap(items.length, 1);
        listeners = new ListenerList();
        // A load factor of 1 is specified to allow the HashMap to be filled to
        // its specified capacity, without having to resize. The default load
        // factor of 0.75 means that when the HashMap is 3/4 full, it will be
        // resized by rehashing to roughly double its size.
        dropDownItemHash = new HashMap(items.length, 1);

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Examples of org.eclipse.jface.util.ListenerList

     * Test that the adding of selection changed listeners works as expected.
     */
    public void testAddSelectionChangedListener() throws Exception {
        // Add a null listener.
        manager.addSelectionChangedListener(null);
        ListenerList listeners = getSelectionChangedListenersList();
        assertNotNull(listeners);
        assertTrue("List should be empty", listeners.isEmpty());


        // Add a non-null listener.
        final ISelectionChangedListener listener =
                new ISelectionChangedListener() {
                    public void selectionChanged(SelectionChangedEvent event) {
                    }
                };


        manager.addSelectionChangedListener(listener);
        listeners = getSelectionChangedListenersList();
        assertNotNull(listeners);
        assertEquals("List size should match", 1, listeners.size());


        // Adding the same listener again shouldn't change the size.
        manager.addSelectionChangedListener(listener);
        listeners = getSelectionChangedListenersList();
        assertNotNull(listeners);
        assertEquals("List size should match", 1, listeners.size());
    }

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Examples of org.eclipse.jface.util.ListenerList

                    public void selectionChanged(SelectionChangedEvent event) {
                    }
                };


        manager.addSelectionChangedListener(listener);
        ListenerList listeners = getSelectionChangedListenersList();
        assertNotNull(listeners);
        assertEquals("List size should match", 1, listeners.size());




        manager.removeSelectionChangedListener(listener);
        listeners = getSelectionChangedListenersList();
        assertNotNull(listeners);
        assertTrue("List should be empty", listeners.isEmpty());


        // Removing the same listener again shouldn't change the size or
        // cause any exceptions.
        manager.removeSelectionChangedListener(listener);
        listeners = getSelectionChangedListenersList();
        assertNotNull(listeners);
        assertTrue("List should be empty", listeners.isEmpty());
    }

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Examples of org.eclipse.jface.util.ListenerList

        super(parent, SWT.NONE);
        this.duplicatesAllowed = duplicatesAllowed;
        this.parser = (parser == null) ? DEFAULT_PARSER : parser;
        createControl(style, title, items, editable, factory);


        listeners = new ListenerList();


        validatorTask = new ValidatorTaskExecutor();
        validatorTask.start();


        updateButtons();

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Examples of org.eclipse.jface.util.ListenerList

     * @param parent the parent Composite
     * @param style the style for the parent
     */
    public FontSelector(Composite parent, int style) {
        super(parent, style);
        listeners = new ListenerList();
        createSelector();
        initAccessible();
    }

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