我正在更新现有的RCP 3应用程序 开普勒到火星。它是由另一个人写的,因此我必须学习很多关于RCP的知识。
在开普勒有效的是:
public class ShowSelectViewDialogHandler extends DialogHandler {
/**
* The name of the parameter providing the view identifier.
*/
private static final String VIEW_ID_COMMAND_PARAMETER_NAME = "org.eclipse.ui.views.showView.viewId"; //$NON-NLS-1$
private static final String MAKE_FAST_COMMAND_PARAMETER_NAME = "org.eclipse.ui.views.showView.makeFast"; //$NON-NLS-1$
private final IHandler handler;
/**
* Creates a new ShowViewHandler that will open the view in its default location.
*/
public ShowSelectViewDialogHandler (final IHandler handler) {
this.handler = handler;
}
@Override
public final Object execute(final ExecutionEvent event) throws ExecutionException {
Object result = null;
IWorkbenchWindow window = EDMUIApplication.instance().getWorkbenchAdvisor().getWorkbenchWindowAdvisor().getWindow();
Map<String, String> parameters = event.getParameters();
String viewId = parameters.get(ShowSelectViewDialogHandler.VIEW_ID_COMMAND_PARAMETER_NAME);
String makeFast = parameters.get(ShowSelectViewDialogHandler.MAKE_FAST_COMMAND_PARAMETER_NAME);
if (viewId == null) {
ShowViewDialog dialog = new ShowViewDialog(window, new EDMUIViewRegistry(EDMUIConstants.CATEGORY_IDS));
if (dialog.open() == Window.OK) {
for (IViewDescriptor viewDescriptor : dialog.getSelection()) {
result = this.openView(window, viewDescriptor.getId(), makeFast);
}
}
} else {
result = this.openView(window, viewId, makeFast);
}
return result;
}
/**
* Opens the view with the given ID.
*
* @param window - workbench window of the view.
* @param viewId - id of the view to open.
* @param makeFast - command parameter.
* @return result of the handler execution.
* @throws ExecutionException - if default handler execution fails.
*/
private Object openView(final IWorkbenchWindow window, final String viewId, final String makeFast) throws ExecutionException {
Object result = null;
try {
Parameterization[] parameterization = this.createParameterization(viewId, makeFast, IWorkbenchCommandConstants.VIEWS_SHOW_VIEW);
result = this.executeDefaultHandler(this.handler, window, parameterization, IWorkbenchCommandConstants.VIEWS_SHOW_VIEW);
} catch (NotDefinedException ex) {
throw new ExecutionException(ex.getMessage(), ex);
}
return result;
}
/**
* Creates parameterization for the command.
*
* @param viewId - view id parameter value.
* @param makeFast - make fast parameter value.
* @param commandId - id of the command.
* @return created parameterization.
* @throws NotDefinedException - if there is no such parameter.
*/
private Parameterization[] createParameterization(final String viewId, final String makeFast, final String commandId) throws NotDefinedException {
ICommandService commandService = (ICommandService) PlatformUI.getWorkbench().getService(ICommandService.class);
Command command = commandService.getCommand(IWorkbenchCommandConstants.VIEWS_SHOW_VIEW);
IParameter viewIdParameter = command.getParameter(ShowSelectViewDialogHandler.VIEW_ID_COMMAND_PARAMETER_NAME);
IParameter makeFastParameter = command.getParameter(ShowSelectViewDialogHandler.MAKE_FAST_COMMAND_PARAMETER_NAME);
return new Parameterization[] { new Parameterization(viewIdParameter, viewId), new Parameterization(makeFastParameter, makeFast) };
}
但是现在ShowViewDialog签名已经改变了。原作者也声明他的方法基于ShowViewHandler,并且必须有更好的更标准的方法来实现相同的效果,即控制我们缩小的视图集的显示。
关于如何实现这一目标的任何想法?可能在某个地方有一个教程,我发现了一个Vogella,但它相当普遍。
答案 0 :(得分:0)
ShowViewDialog
是内部对话框,因此不应该首先使用它。正如您所发现的,可以在不发出警告的情况下更改内部对话框。
您的代码似乎正在使用您自己的IViewRegistry
实现。要坚持只使用官方API,您必须编写自己的show view对话框版本。这是一个使用FilteredTree
和IViewRegistry
getCategories
和getViews
方法的相当简单的对话框。
没有更标准的方法可以做到这一点。