如何在eclipse插件中更新/刷新视图？

问题描述

我有一个 eclipse插件，使用单个视图（如eclipse helloworld-view-plugin-project）。在视图文件中，当我想要更新视图时，我会收到一个事件。

I have an eclipse plug-in with a single view (like the eclipse helloworld-view-plugin-project). In the view-file I get an event when I want to update the view.

在此视图中，我有一个具有多个标签的组中的GridData。我有几个服务注册到程序，其状态应该在此GridData中显示。

In this view I have a GridData in a Group with multiple labels. I have several services which register to the programe and whose status should be shown in this GridData.

编辑：为了更好地显示我的问题我更新了这篇文章，并添加了整个代码：

In order to better show my problem I updated this post and added the whole code:

CreatePartControl（）：

public void createPartControl(Composite _parent) {
  parent = _parent;
  createContents();
  addBindings();
  makeActions();
  contributeToActionBars();
}

CreateContents（）：

protected void createContents() {

  // fixed
  checkIcon = //...
  errorIcon = //...
  smallFont = SWTResourceManager.getFont("Segoe UI", 7, SWT.NORMAL);

  // content
  gl_shell = new GridLayout(1, false);
  //margins, etc. for gl_shell
  parent.setLayout(gl_shell);

  final Label lblGreeting = new Label(parent, SWT.NONE);
  lblGreeting.setLayoutData(new GridData(SWT.FILL, SWT.TOP, false, false, 1, 1));
  lblGreeting.setText("Hi " + Preferences.getPreName());

  // -- GROUP YOUR STATS (show all services)
  createStatusGroupBox();
}

createStatusGroupBox（）：

private Group grpYourStatus = null; // outside the method for access in listener (below)

private void createStatusGroupBox() {
  grpYourStatus = new Group(parent, SWT.NONE);
  grpYourStatus.setLayoutData(new GridData(SWT.FILL, SWT.TOP, true, false, 1, 1));
  grpYourStatus.setText("Your upload status");
  grpYourStatus.setLayout(new GridLayout(3, false));

  // add message if no service is registered
  if ( r.getServiceList().size() == 0 ) {
     Label status = new Label(grpYourStatus, SWT.NONE);
     status.setText("No service registered.");
     new Label(grpYourStatus, SWT.NONE); //empty
     new Label(grpYourStatus, SWT.NONE); //empty
  }

  // add labels (status, message, name) for each registered service
  for ( IRecorderObject service : r.getServiceList() ) {
     Label name = new Label(grpYourStatus, SWT.NONE);
     Label status = new Label(grpYourStatus, SWT.NONE);
     Label message = new Label(grpYourStatus, SWT.NONE);
     message.setFont(smallFont);
     message.setLayoutData(new GridData(SWT.LEFT, SWT.CENTER, true, false, 1, 1));

     service.getServiceViewItem().setLabelsAndIcons(name, status, message, checkIcon, errorIcon); //this also sets the values of the labels (label.setText(...) via data binding)
}

---

不幸的是，我不知道正确的方式是更新/重置它。我尝试了以下内容：

---

Unfortunately, I don't know what the right way is to update/reset it. I tried the following:

监听器（应更新视图/服务列表）：

r.addPropertyChangeListener(BindingNames.SERVICE_ADDED, new PropertyChangeListener() {
  public void propertyChange(final PropertyChangeEvent evt) {
    Display.getDefault().asyncExec(new Runnable() {
      public void run() {
        // This "redraws" the view, but just places the whole content (generated in createStatusGroupBox()) above the other parts.
        //Display.getCurrent().update();
        //createStatusGroupBox();
        //parent.layout(true);
        //parent.redraw();

        // disposes grpYourStatus-Group but doesn't show anything then
        grpYourStatus.dispose();
        createStatusGroupBox();
        grpYourStatus.layout();
        grpYourStatus.redraw();
      }
    });
  }
});

我还尝试了以下语句（单独）;所有没有成功：

I also tried the following statements (individually); all without success:

parent.redraw();
parent.update();
parent.layout();
parent.layout(true);
parent.refresh();

---

在这个我阅读了以下内容：

Eclipse部件通常更新其内容作为对工作台内
更改选择的反应（例如，用户可能在调试视图中的另一个堆栈框架上单击
）。

Eclipse parts typically update their content as a reaction to a changed selection inside of the workbench (e.g. the user might click on another stack frame in the debug view).

不幸的是，我不知道还有什么可以尝试，我没有找到任何有用的搜索... 感谢您的帮助和建议

Unfortunately, I don't know what to else I could try and I didn't find anything helpful with searches... thank's for your help and suggestions!

推荐答案

我终于找到答案（和AndreiC的帮助一起）：

I finally found the answer (together with AndreiC's help!):

我的监听器现在看起来像这样：

my listener now looks like this:

r.addPropertyChangeListener(BindingNames.SERVICE_ADDED, new PropertyChangeListener() {
  public void propertyChange(final PropertyChangeEvent evt) {
    Display.getDefault().asyncExec(new Runnable() {
      public void run() {
         // remove grpYourStatus from parent
         grpYourStatus.dispose();

         // add grpYourStatus (with updated values) to parent
         createStatusGroupBox();

         // refresh view
         parent.pack();
         parent.layout(true);
      }
    });
  }
});

其余的与上面的代码一样。

The rest is the same like the code above.

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