如何在eclipse插件中更新/刷新视图？ [英] How to update/refresh a view in an eclipse plug-in?
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();
在这个帖子我阅读了以下内容：
$ b $ createPartControls是一个视图的生命周期的时间，它的
包含的小部件被创建（当视图最初变得可见时，
）。这段代码只在视图生活
循环期间执行一次，因此您无法在此处直接添加任何内容以刷新
视图。
createPartControls is that time of the life cycle of a view, where its contained widgets are created (when the view becomes visible initially). This code is only executed once during the view life cycle, therefore you cannot add anything here directly to refresh your view.
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.
这篇关于如何在eclipse插件中更新/刷新视图？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
