Bug 147530 [DataBinding] Provide event objects for change listeners
Before data binding goes 1.0 it would be wise to provide EventObjects for the following listeners to ensure that the API doesn't preclude future expansion of the values supplied to listeners. Interfaces that would be affected: * IValueChangeListener * IValueChangingListener * IListChangeListener * ISetChangeListener * IMappingChangeListener
examples/org.eclipse.jface.examples.databinding/src/org/eclipse/jface/examples/databinding/contentprovider/test/LabelProviderTest.java
removeButton.setText("Remove"); 
				renameButton = new Button(buttonBar, SWT.PUSH);
				renameButton.addSelectionListener(buttonSelectionListener);
				renameButton.setText("Rename"); 
				selectedRenamable
						.addValueChangeListener(new IValueChangeListener() {
							public void handleValueChange(
									IObservableValue source, ValueDiff diff) {
								boolean shouldEnable = selectedRenamable
										.getValue() != null;
								removeButton.setEnabled(shouldEnable);
								renameButton.setEnabled(shouldEnable);
							}
						});
				removeButton.setEnabled(false);
				renameButton.setEnabled(false);
				GridLayoutFactory.fillDefaults().generateLayout(buttonBar);
			}
		}
		GridLayoutFactory.fillDefaults().numColumns(2).margins(
				LayoutConstants.getMargins()).generateLayout(shell);
	}
	/**
	 * @param currentSelection
	 */
	protected void rename(final RenamableItem currentSelection) {
		InputDialog inputDialog = new InputDialog(
				shell,
				"Edit name", "Enter the new item name", currentSelection.getName(), null); 
		if (Window.OK == inputDialog.open()) {