Пример #1
0
  /**
   * Called on the viewer disposal. Unregisters from the compare configuration. Clients may extend
   * if they have to do additional cleanup.
   *
   * @see org.eclipse.jface.viewers.ContentViewer#handleDispose(org.eclipse.swt.events.DisposeEvent)
   */
  protected void handleDispose(DisposeEvent event) {

    if (fHandlerService != null) fHandlerService.dispose();

    Object input = getInput();
    if (input instanceof ICompareInput) {
      ICompareContainer container = getCompareConfiguration().getContainer();
      container.removeCompareInputChangeListener(
          (ICompareInput) input, fCompareInputChangeListener);
    }
    if (input != null) {
      ICompareInputLabelProvider lp = getCompareConfiguration().getLabelProvider();
      if (lp != null) lp.removeListener(labelChangeListener);
    }

    if (fPropertyChangeListener != null) {
      fCompareConfiguration.removePropertyChangeListener(fPropertyChangeListener);
      fPropertyChangeListener = null;
    }

    fAncestorLabel = null;
    fLeftLabel = null;
    fDirectionLabel = null;
    fRightLabel = null;
    fCenter = null;

    if (fRightArrow != null) {
      fRightArrow.dispose();
      fRightArrow = null;
    }
    if (fLeftArrow != null) {
      fLeftArrow.dispose();
      fLeftArrow = null;
    }
    if (fBothArrow != null) {
      fBothArrow.dispose();
      fBothArrow = null;
    }

    if (fNormalCursor != null) {
      fNormalCursor.dispose();
      fNormalCursor = null;
    }
    if (fHSashCursor != null) {
      fHSashCursor.dispose();
      fHSashCursor = null;
    }
    if (fVSashCursor != null) {
      fVSashCursor.dispose();
      fVSashCursor = null;
    }
    if (fHVSashCursor != null) {
      fHVSashCursor.dispose();
      fHVSashCursor = null;
    }

    super.handleDispose(event);
  }
  private void updateItem(Item item) {
    if (!item.isDisposed()) { // defensive code
      ILabelProvider lprovider = (ILabelProvider) fContentViewer.getLabelProvider();

      Object data = item.getData();

      String oldText = item.getText();
      String text = lprovider.getText(data);
      if (text != null && !text.equals(oldText)) {
        item.setText(text);
      }

      Image oldImage = item.getImage();
      Image image = lprovider.getImage(data);
      if (image != null && !image.equals(oldImage)) {
        item.setImage(image);
      }
    }
  }
Пример #3
0
 /**
  * The <code>ContentMergeViewer</code> implementation of this <code>ContentViewer</code> method
  * checks to ensure that the content provider is an <code>IMergeViewerContentProvider</code>.
  *
  * @param contentProvider the content provider to set. Must implement IMergeViewerContentProvider.
  */
 public void setContentProvider(IContentProvider contentProvider) {
   Assert.isTrue(contentProvider instanceof IMergeViewerContentProvider);
   super.setContentProvider(contentProvider);
 }
Пример #4
0
  protected void hookControl(final Control control) {
    super.hookControl(control);
    if (control instanceof Scale) {
      Listener listener =
          new Listener() {

            private boolean mouseDown = false;
            private boolean mouseDrag = false;
            private boolean selectionChangedDuringDragging = false;

            public void handleEvent(Event event) {
              switch (event.type) {
                case SWT.Selection:
                  boolean selectionChanged = handleScaleSelection((Scale) event.widget);
                  if (selectionChanged
                      && !selectionChangedDuringDragging
                      && (mouseDrag || mouseDown)) {
                    selectionChangedDuringDragging = true;
                  }
                  if (!selectionChangedDuringDragging) {
                    firePostSelectionChanged();
                  }
                  break;
                case SWT.MouseDoubleClick:
                  mouseDown = false;
                  mouseDrag = false;
                  selectionChangedDuringDragging = false;
                  fireOpen(new OpenEvent(SliderViewer.this, getSelection()));
                  break;
                case SWT.MouseDown:
                  mouseDown = true;
                  mouseDrag = false;
                  selectionChangedDuringDragging = false;
                  break;
                case SWT.MouseMove:
                  if (!mouseDrag && mouseDown) {
                    mouseDrag = true;
                  }
                  break;
                case SWT.MouseUp:
                  boolean postSelected = selectionChangedDuringDragging;
                  mouseDown = false;
                  mouseDrag = false;
                  selectionChangedDuringDragging = false;
                  if (postSelected) {
                    firePostSelectionChanged();
                  }
              }
            }
          };
      control.addListener(SWT.Selection, listener);
      control.addListener(SWT.MouseDoubleClick, listener);
      control.addListener(SWT.MouseDown, listener);
      control.addListener(SWT.MouseMove, listener);
      control.addListener(SWT.MouseUp, listener);
      return;
    } else if (control instanceof FigureCanvas) {
      Listener listener =
          new Listener() {

            private boolean mouseDown = false;
            private boolean mouseDrag = false;
            private boolean selectionChangedDuringDragging = false;

            public void handleEvent(Event event) {
              switch (event.type) {
                case SWT.Resize:
                  handleResize();
                  break;
                case SWT.MouseMove:
                  if (!mouseDrag && mouseDown) {
                    mouseDrag = true;
                  }
                  if (mouseDrag && (event.stateMask & SWT.BUTTON1) != 0) {
                    if (handleCanvasSelection(event.x, event.y)) {
                      selectionChangedDuringDragging = true;
                    }
                  }
                  break;
                case SWT.MouseDown:
                  if (receives(event.x, event.y)) {
                    mouseDown = true;
                    mouseDrag = false;
                    if (event.button == 1) {
                      if (handleCanvasSelection(event.x, event.y)) {
                        selectionChangedDuringDragging = true;
                      }
                    }
                  }
                  break;
                case SWT.MouseUp:
                  boolean postSelected = selectionChangedDuringDragging;
                  mouseDown = false;
                  mouseDrag = false;
                  selectionChangedDuringDragging = false;
                  if (postSelected) {
                    firePostSelectionChanged();
                  }
                  break;
                case SWT.MouseDoubleClick:
                  mouseDown = false;
                  mouseDrag = false;
                  fireOpen(new OpenEvent(SliderViewer.this, getSelection()));
                  break;
              }
            }
          };
      control.addListener(SWT.MouseMove, listener);
      control.addListener(SWT.MouseDown, listener);
      control.addListener(SWT.MouseUp, listener);
      control.addListener(SWT.Resize, listener);
      control.addListener(SWT.MouseDoubleClick, listener);
    }
  }
Пример #5
0
 /** 刷新数据列表。 */
 public void refresh() {
   for (ContentViewer viewer : dataTreeViewers) {
     viewer.refresh();
   }
 }