org.eclipse.swt.events.DisposeEvent Java Examples

public void add(Composite composite) {
	composite.setParent(this);
	composite.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));
	
	composite.addDisposeListener(new DisposeListener() {
		
		@Override
		public void widgetDisposed(DisposeEvent e) {
			if( composite.getParent() == VerticalList.this ) {
				remove(composite);
			}
		}
	});
	
	notifyParentScrolledComposite();
}
 

/**
 * Change the height of the installed <code>Font</code> and takes care of disposing
 * the new font when the control is disposed
 * @param control
 * @param height
 * @param style one or both of SWT.BOLD, SWT.ITALIC, or SWT.NORMAL
 */
public static void setFontHeight(Control control, int height, int style) {
	FontData[] fDatas = control.getFont().getFontData();
	for (FontData fData : fDatas) {
		fData.height = height;
		fData.setStyle(style);
	}
	final Font newFont = new Font(control.getDisplay(), fDatas);
	control.setFont(newFont);
	control.addDisposeListener(new DisposeListener() {

		@Override
		public void widgetDisposed(DisposeEvent e) {
			if (!newFont.isDisposed()) {
				newFont.dispose();
			}
		}
	});
}
 

/**
 * Setup the Disk window and display (open) it.
 */
public void open() {
	shell = new Shell(parentShell, SWT.SHELL_TRIM);
	shell.setLayout(new FillLayout());
	shell.setImage(imageManager.get(ImageManager.ICON_DISK));
	setStandardWindowTitle();
	shell.addDisposeListener(new DisposeListener() {
			public void widgetDisposed(DisposeEvent event) {
				dispose(event);
			}
		});
		
	CTabFolder tabFolder = new CTabFolder(shell, SWT.BOTTOM);
	new DiskExplorerTab(tabFolder, disks, imageManager, this);
	diskMapTabs = new DiskMapTab[disks.length];
	for (int i=0; i<disks.length; i++) {
		if (disks[i].supportsDiskMap()) {
			diskMapTabs[i] = new DiskMapTab(tabFolder, disks[i]);
		}
	}
	diskInfoTab = new DiskInfoTab(tabFolder, disks);
	tabFolder.setSelection(tabFolder.getItems()[0]);
	
	
	shell.open();
}
 

/**
 * @param agrid
 *
 */
private Win7RendererSupport(Grid agrid) {
	this.grid = agrid;
	this.palette = new Win7PaletteProvider();
	grid.addDisposeListener(new DisposeListener() {
		public void widgetDisposed(DisposeEvent e) {
			grid.removeDisposeListener(this);
			if (palette != null) {
				palette.dispose();
			}
			headerRenderer = null;
			emptyHeaderRenderer = null;
			groupHeaderRenderer = null;
		}
	});
}
 

public static final void addDoubleClick( final TreeItem treeItem, final IDoubleClick doubleClick ) {
  final String[] path1 = ConstUi.getTreeStrings( treeItem );
  final Tree tree = treeItem.getParent();

  if ( doubleClick != null ) {
    final SelectionAdapter selectionAdapter = new SelectionAdapter() {
      public void widgetDefaultSelected( SelectionEvent selectionEvent ) {
        TreeItem[] items = tree.getSelection();
        for ( int i = 0; i < items.length; i++ ) {
          String[] path2 = ConstUi.getTreeStrings( items[ i ] );
          if ( equalPaths( path1, path2 ) ) {
            doubleClick.action( treeItem );
          }
        }
      }
    };
    tree.addSelectionListener( selectionAdapter );

    // Clean up when we do a refresh too.
    treeItem.addDisposeListener( new DisposeListener() {
      public void widgetDisposed( DisposeEvent disposeEvent ) {
        tree.removeSelectionListener( selectionAdapter );
      }
    } );
  }
}
 

public void showPreview(CodeRecommendationPreviewView view) {
	view.getComposite().setParent(previewComposite);

	StackLayout layout = (StackLayout) previewComposite.getLayout();
	layout.topControl = view.getComposite();

	view.getComposite().addDisposeListener(new DisposeListener() {

		@Override
		public void widgetDisposed(DisposeEvent e) {
			layout.topControl = lblSelectAPattern;
		}
	});

	Display.getDefault().syncExec(() -> {
		previewComposite.pack();
		previewComposite.requestLayout();
	});
}
 

public ServersViewer ( final Composite parent )
{
    parent.setLayout ( new FillLayout () );
    this.viewer = new TreeViewer ( parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL );

    this.contentProvider = new ObservableSetTreeContentProvider ( new ObservableFactoryImpl (), null );
    this.viewer.setContentProvider ( this.contentProvider );
    this.labelProvider = new ServerLabelProvider ( this.contentProvider.getKnownElements () );
    this.viewer.setLabelProvider ( this.labelProvider );

    this.viewer.setInput ( HivesPlugin.getDefault ().getServerManager () );
    this.viewer.getControl ().addDisposeListener ( new DisposeListener () {

        @Override
        public void widgetDisposed ( final DisposeEvent e )
        {
            handleDispose ();
        }
    } );

    ColumnViewerToolTipSupport.enableFor ( this.viewer );
}
 

public static void
show(
		Core _core,
Display 		display,
String 			ipsBlocked,
String 			ipsBanned)
{
    if(instance == null || instance.isDisposed())
    {
        instance = create(_core, display, ipsBlocked, ipsBanned);
        instance.addDisposeListener(new DisposeListener() {
            @Override
            public void widgetDisposed(DisposeEvent event) {
                instance = null;
            }
        });
    }
    else
    {
        instance.open();
    }
}
 

private Composite createComposite ( final Composite wrapper )
{
    this.dbc = new DataBindingContext ( DisplayRealm.getRealm ( wrapper.getDisplay () ) );

    wrapper.addDisposeListener ( new DisposeListener () {

        @Override
        public void widgetDisposed ( final DisposeEvent e )
        {
            CallbackDialog.this.dbc.dispose ();
        }
    } );

    final Composite composite = new Composite ( wrapper, SWT.NONE );
    composite.setLayout ( new GridLayout ( 2, false ) );

    for ( final CallbackWidgetFactory factory : this.factories )
    {
        factory.createGridWidgets ( this.dbc, composite );
    }

    return composite;
}
 

private void checkCreateDialog ()
{
    if ( this.dialog != null )
    {
        return;
    }

    this.dialog = new Shell ();
    this.dialog.setText ( "Visibility Tester" );
    this.dialog.open ();
    this.dialog.setLayout ( new GridLayout ( 1, false ) );
    this.dialog.addDisposeListener ( new DisposeListener () {

        @Override
        public void widgetDisposed ( final DisposeEvent e )
        {
            VisibilityTester.this.dialog = null;
        }
    } );
}
 

public void addSearchTab(String title, ITab<?> view) {
	CTabItem tab = new CTabItem(searchTabs, SWT.NONE);
	tab.setText(title);

	Composite composite = view.getComposite();
	composite.setParent(searchTabs);

	tab.setControl(composite);

	searchTabs.setSelection(tab);

	// this part is a bit hacky, but there is no other way to notify the view about
	// the dispose
	tab.addDisposeListener(new DisposeListener() {
		public void widgetDisposed(DisposeEvent e) {
			view.closed();
		}
	});
}
 

public DataItemLabel ( final Composite composite, final String connectionId, final String itemId )
{
    this.label = new CLabel ( composite, SWT.NONE );
    this.dataItem = new DataItemObservableValue ( Activator.getDefault ().getBundle ().getBundleContext (), connectionId, itemId );
    this.label.addDisposeListener ( new DisposeListener () {

        @Override
        public void widgetDisposed ( final DisposeEvent e )
        {
            handleDispose ();
        }
    } );
    this.model = PojoObservables.observeDetailValue ( this.dataItem, "value", Variant.class ); //$NON-NLS-1$
    this.dbc = new DataBindingContext ();

    bind ();
}
 

private void create(Composite parent) {
  displayExecutor = DisplayExecutor.create(parent.getDisplay());
  comboViewer = new ComboViewer(parent, SWT.READ_ONLY | SWT.DROP_DOWN);
  comboViewer.setComparator(new ViewerComparator());
  comboViewer.setLabelProvider(new LabelProvider() {
    @Override
    public String getText(Object element) {
      if (element instanceof GcpProject) {
        GcpProject project = (GcpProject) element;
        return project.getName() + " (" + project.getId() + ")";
      }
      return super.getText(element);
    }
  });
  comboViewer.setContentProvider(ArrayContentProvider.getInstance());
  comboViewer.setInput(EMPTY_PROJECTS);
  parent.addDisposeListener(new DisposeListener() {
    @Override
    public void widgetDisposed(DisposeEvent event) {
      cancelFetch();
    }
  });

  fetch();
}
 

/**
 * Converts the font of the control by adding a single style bit, unless the font already have
 * that style.
 * <p>
 * If the font is converted, it will attach a {@link DisposeListener}
 * to the <code>control</code> to dispose the font when it's not needed anymore.
 * <p>
 * <em>If converting fonts is a frequent operation, this method will create
 * several {@link DisposeListener}s that can lead to high resource allocation</em>
 *
 * @param control whose font will be changed
 * @param style e.g. SWT.BOLD or SWT.ITALIC
 */
public static void convertFont(Control control, int style) {
  for (FontData fontData : control.getFont().getFontData()) {
    if (hasStyle(fontData, style)) {
      return;
    }
  }
  FontDescriptor fontDescriptor = FontDescriptor.createFrom(control.getFont()).setStyle(style);
  final Font newFont = fontDescriptor.createFont(control.getDisplay());
  control.setFont(newFont);
  control.addDisposeListener(new DisposeListener() {
    @Override
    public void widgetDisposed(DisposeEvent event) {
      newFont.dispose();
    }
  });
}
 

public ToolBarNavigator ( final Composite parent, final int style, final ViewManager viewManager )
{
    this.viewManager = viewManager;
    this.toolbar = new ToolBar ( parent, style );
    this.resourceManager = new LocalResourceManager ( JFaceResources.getResources ( parent.getDisplay () ) );

    this.toolbar.addDisposeListener ( new DisposeListener () {

        @Override
        public void widgetDisposed ( final DisposeEvent e )
        {
            handleDispose ();
        }
    } );

    viewManager.addViewManagerListener ( this );
}
 

/** 
 * @see org.eclipse.jface.viewers.StructuredViewer#mapElement(java.lang.Object, org.eclipse.swt.widgets.Widget)
 */
protected void mapElement(Object element, final Widget item) {
	super.mapElement(element, item);
	// make sure to unmap elements if the tree is virtual
	if ((getTree().getStyle() & SWT.VIRTUAL) != 0) {
		// only add a dispose listener if item hasn't already on assigned
		// because it is reused
		if (item.getData(VIRTUAL_DISPOSE_KEY) == null) {
			item.setData(VIRTUAL_DISPOSE_KEY, Boolean.TRUE);
			item.addDisposeListener(new DisposeListener() {
				public void widgetDisposed(DisposeEvent e) {
					if (!treeIsDisposed) {
						Object data = item.getData();
						if (usingElementMap() && data != null) {
							unmapElement(data, item);
						}
					}
				}
			});
		}
	}
}
 

public void widgetDisposed(DisposeEvent e) {
	VTracker tracker = instance();
	if(tracker.panels != null && tracker.panels.containsKey(e.widget)) {
		tracker.panels.remove(e.widget);
		if(tracker.panels.isEmpty()) {
			Display.getDefault().removeFilter(SWT.FocusIn, tracker.filter);
			Display.getDefault().removeFilter(SWT.MouseMove, tracker.filter);
			Display.getDefault().removeFilter(SWT.MouseDown, tracker.filter);
			Display.getDefault().removeFilter(SWT.MouseUp, tracker.filter);
			Display.getDefault().removeFilter(SWT.Traverse, tracker.filter);
			tracker.listening = false;
			if(activeControl != null) {
				Control control = activeControl.getControl();
				if(control != null && !control.isDisposed()) {
					control.dispose();
				}
			}
			tracker.panels = null;
		}
	}
}
 

public void createControl ( final Composite parent )
{
    this.wrapper = new Composite ( parent, SWT.NONE );
    this.wrapper.setLayout ( GridLayoutFactory.slimStack () );

    final Composite extensionSpace = new Composite ( this.wrapper, SWT.NONE );
    extensionSpace.setLayoutData ( new GridData ( SWT.FILL, SWT.FILL, true, false ) );
    extensionSpace.setLayout ( new RowLayout ( SWT.HORIZONTAL ) );
    this.chartArea = new ChartArea ( this.wrapper, SWT.NONE );
    this.chartArea.setLayoutData ( new GridData ( SWT.FILL, SWT.FILL, true, true ) );
    this.viewer = new ChartViewer ( this.chartArea.getDisplay (), this.chartArea.getChartRenderer (), this.configuration, new CompositeExtensionSpace ( extensionSpace ), null );

    parent.addDisposeListener ( new DisposeListener () {

        @Override
        public void widgetDisposed ( final DisposeEvent e )
        {
            handleDispose ();
        }
    } );
}
 

public void showResult(ApiDocumentationResultView view) {
	Composite composite = view.getComposite();

	resultsVerticalList.add(composite);

	StackLayout layout = (StackLayout) getComposite().getLayout();
	layout.topControl = resultsScrolledComposite;

	view.getComposite().addDisposeListener(new DisposeListener() {

		@Override
		public void widgetDisposed(DisposeEvent e) {
			if (resultsVerticalList.getChildren().length == 0)
				layout.topControl = defaultMessageComposite;
		}
	});
}
 

private Control createPreviewer(Composite parent) {
	final CompareConfiguration compareConfiguration = new CompareConfiguration();
	compareConfiguration.setLeftLabel("Original " + docTypeName);
	compareConfiguration.setLeftEditable(false);
	compareConfiguration.setRightLabel("Updated " + docTypeName);
	compareConfiguration.setRightEditable(false);
	compareConfiguration.setProperty(CompareConfiguration.IGNORE_WHITESPACE, Boolean.FALSE);
	compareConfiguration.setProperty(PREFIX_SUFFIX_PROPERTY, fPrefixSuffix);

	fViewer = new TextMergeViewer(parent, SWT.NONE, compareConfiguration);
	// add initial input in order to avoid problems when disposing the viewer later:
	fViewer.setInput(new DiffNode(new TargetElementFromString(""), new TargetElementFromString("")));

	Control control = fViewer.getControl();
	control.addDisposeListener(new DisposeListener() {
		@Override
		public void widgetDisposed(DisposeEvent e) {
			compareConfiguration.dispose();
		}
	});
	return control;
}
 

public ChartManager ( final Composite parent, final int style )
{
    super ( parent, style );

    setLayout ( makeLayout () );

    // title row

    this.title = new Label ( this, SWT.NONE );
    this.title.setLayoutData ( new GridData ( GridData.CENTER, GridData.FILL, true, false, 1, 1 ) );

    // row 2

    this.chartArea = new ChartArea ( this, SWT.NONE );
    this.chartArea.setLayoutData ( makeMainLayoutData () );

    addDisposeListener ( new DisposeListener () {

        @Override
        public void widgetDisposed ( final DisposeEvent e )
        {
            onDispose ();
        }
    } );
}
 

/**
 * Dispose of all shared resources.
 */
protected void dispose(DisposeEvent event) {
	imageCanvas.dispose();
	toolBar.dispose();
	imageManager.dispose();
       if (System.getProperty("os.name").startsWith("Mac OS X")) {
   		System.exit(0);
       }
}
 

public GenericComposite ( final Composite parent, final int style, final Collection<Registration> registrations, final Map<String, String> properties )
{
    super ( parent, style );

    this.callbackHandler = new DisplayCallbackHandler ( parent.getShell (), "Operation", "Confirmation required" );

    this.registrationManager = new RegistrationManager ( Activator.getDefault ().getBundle ().getBundleContext () );
    this.registrationManager.addListener ( this );

    this.summaryProvider = new RegistrationManagerSummaryProvider ( this.registrationManager );

    if ( registrations != null )
    {
        for ( final Registration reg : registrations )
        {
            final DataItemDescriptor descriptor = DataItemDescriptor.create ( DetailComponentImpl.resolve ( reg.getDescriptor (), properties ) );
            this.registrationManager.registerItem ( reg.getKey (), descriptor.getItemId (), descriptor.getConnectionInformation (), reg.isAggregateState (), true );
        }
    }

    addDisposeListener ( new DisposeListener () {

        @Override
        public void widgetDisposed ( final DisposeEvent e )
        {
            handleDispose ();
        }
    } );
}
 

/**
 * Dispose of all shared resources.
 */
protected void dispose(DisposeEvent event) {
	courier.dispose();
	black.dispose();
	blue.dispose();
	green.dispose();
	if (nativeFilterAdapter != null) nativeFilterAdapter.dispose();
	hexFilterAdapter.dispose();
	rawDumpFilterAdapter.dispose();
	System.gc();
}
 

public static Sash
createSash(
	Composite	form,
	int			SASH_WIDTH,
	int			style )
{
    final Sash sash = new Sash(form, style );
    Image image = new Image(sash.getDisplay(), 9, SASH_WIDTH);
    ImageData imageData = image.getImageData();
    int[] row = new int[imageData.width];
    for (int i = 0; i < row.length; i++) {
    	if (imageData.depth == 16) {
    		row[i] = (i % 3) != 0 ? 0x7BDEF7BD : 0xDEF7BDEB;
    	} else {
    		row[i] = (i % 3) != 0 ? 0xE0E0E0 : 0x808080;
    		if (imageData.depth == 32) {
    			row[i] = (row[i] & 255) + (row[i] << 8);
    		}
    	}
		}
    for (int y = 1; y < imageData.height - 1; y++) {
    	imageData.setPixels(0, y, row.length, row, 0);
    }
    Arrays.fill(row, imageData.depth == 16 ? 0x7BDEF7BD : 0xE0E0E0E0);
  	imageData.setPixels(0, 0, row.length, row, 0);
  	imageData.setPixels(0, imageData.height - 1, row.length, row, 0);
    image.dispose();
    image = new Image(sash.getDisplay(), imageData);
    sash.setBackgroundImage(image);
    sash.addDisposeListener(new DisposeListener() {
			@Override
			public void widgetDisposed(DisposeEvent e) {
				sash.getBackgroundImage().dispose();
			}
		});

    return( sash );
}
 

public Image setButtonImage(Button btn, final String key) {
	Image bg = getImage(key);
	btn.setImage(bg);
	btn.addDisposeListener(new DisposeListener() {
		@Override
		public void widgetDisposed(DisposeEvent e) {
			releaseImage(key);
		}
	});

	return( bg );
}
 

public BreadcrumbBar ( final Composite parent, final int style )
{
    this.composite = new Composite ( parent, SWT.NONE );
    this.composite.addDisposeListener ( new DisposeListener () {

        @Override
        public void widgetDisposed ( final DisposeEvent e )
        {
            handleDispose ();
        }
    } );
    this.horizontal = ( style & SWT.HORIZONTAL ) != 0;

    final GridLayout layout = new GridLayout ( 1, false );
    layout.marginHeight = layout.marginWidth = 0;
    layout.horizontalSpacing = layout.verticalSpacing = 0;

    if ( this.horizontal )
    {
        layout.marginWidth = 5;
        layout.horizontalSpacing = 5;
    }
    else
    {
        layout.marginHeight = 5;
        layout.verticalSpacing = 5;
    }

    this.composite.setLayout ( layout );
}
 

public void setBackgroundImage(Control control, final String key) {
	Image bg = getImage(key);
	control.setBackgroundImage(bg);
	control.addDisposeListener(new DisposeListener() {
		@Override
		public void widgetDisposed(DisposeEvent e) {
			releaseImage(key);
		}
	});
}
 

public DataItemHeaderLabel ( final Composite parent )
{
    super ( parent, SWT.NONE );
    setLayout ( new RowLayout ( SWT.HORIZONTAL ) );

    this.headerIcon = new Label ( this, SWT.NONE );
    this.headerLabel = new Label ( this, SWT.NONE );
    this.headerLabel.setText ( Messages.DataItemHeaderLabel_EmptyDataItem );

    this.headerValueLabel = new Label ( this, SWT.NONE );

    this.blinker = new StyleBlinker () {

        @Override
        public void update ( final CurrentStyle style )
        {
            handleStyleUpdate ( style );
        }
    };

    this.styler = new StateStyler ( this.blinker );

    addDisposeListener ( new DisposeListener () {

        @Override
        public void widgetDisposed ( final DisposeEvent e )
        {
            handleDispose ();
        }
    } );

    handleUpdateData ( null );
}
 

private VNative(VPanel panel, int style) {
	super(panel, style);
	disposeListener = new DisposeListener() {
		public void widgetDisposed(DisposeEvent e) {
			dispose();
		}
	};
}