java - 在 Eclipse RCP 中使用导航历史记录

Question

我喜欢在我的 RCP 应用程序中使用 Eclipse 提供的导航历史记录。不幸的是，此功能没有得到很好的记录。事实上，我只找到了这个 Wiki 条目:http://wiki.eclipse.org/FAQ_How_do_I_hook_my_editor_to_the_Back_and_Forward_buttons%3F

它提到可以在导航历史记录中标记每个编辑器，而不必指定位置。这正是我想要的。

Regardless of whether the specific editor has any support for navigation history, markLocation will work. If the editor doesn’t implement INavigationLocationProvider, a history entry will be added, allowing the user to jump back to that editor but without returning to any particular location.

我在我的应用程序中添加了以下代码行，以便在每次打开新编辑器时添加一个导航条目。

IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
IEditorPart editor = page.openEditor( input, MyEditor.ID );
page.getNavigationHistory().markLocation( editor );

我的问题是代码不起作用。命令 org.eclipse.ui.navigate.backwardHistory 和 org.eclipse.ui.navigate.forwardHistory 的工具栏图标保持灰色。

Answer 1

我找到了解决方案。为了在您的 Eclipse RCP 应用程序中使用 Navigation History，您必须将以下代码行添加到您的 ApplicationActionBarAdvisor。

/**
 * Fills the cool bar with the main toolbars for the window.
 * <p>
 * The default implementation does nothing. Subclasses may override.
 * </p>
 * 
 * @param coolBar
 *            the cool bar manager
 */
protected void fillCoolBar( ICoolBarManager coolBar ) {
    IToolBarManager navigation = new ToolBarManager( SWT.FLAT );

    IAction backward = getAction( IWorkbenchCommandConstants.NAVIGATE_BACKWARD_HISTORY );
    IAction forward = getAction( IWorkbenchCommandConstants.NAVIGATE_FORWARD_HISTORY );

    navigation.add( backward );
    navigation.add( forward );

    coolBar.add( navigation );
}

/**
 * Instantiates the actions used in the fill methods. Use
 * {@link #register(IAction)} to register the action with the key binding
 * service and add it to the list of actions to be disposed when the window
 * is closed.
 * 
 * @param window
 *            the window containing the action bars
 */
protected void makeActions( IWorkbenchWindow window ) {
    IAction backward = ActionFactory.BACKWARD_HISTORY.create( window );
    backward.setId( IWorkbenchCommandConstants.NAVIGATE_BACKWARD_HISTORY );
    IAction forward = ActionFactory.FORWARD_HISTORY.create( window );
    forward.setId( IWorkbenchCommandConstants.NAVIGATE_FORWARD_HISTORY );

    register( backward );
    register( forward );
}