AggregateValidationStatus的ChangeListener中的JFace/Eclipse数据绑定触发器多值器

问题描述：

我有一个AggregateValidationStatus与IChangeListener。每次我选择/更改时都会调用监听器，而这正是我需要的组件。我唯一的问题是我必须在ChangeListener的开头触发我的MultiValidator的validate()方法。可悲的是有很低的文件，我发现没有帮助我。AggregateValidationStatus的ChangeListener中的JFace/Eclipse数据绑定触发器多值器

我ChangeListener

final AggregateValidationStatus aggregateValidationStatus = new AggregateValidationStatus(
     dataBindingContext.getBindings(), AggregateValidationStatus.MAX_SEVERITY); 
aggregateValidationStatus.addChangeListener(new IChangeListener() { 
    public void handleChange(ChangeEvent event) { 
     //Here I have to trigger the MultiValidator to return either OK or ERROR 
     boolean formIsValid = true; 
     aggregateValidationStatus.getValue(); 
     for (Object o : dataBindingContext.getBindings()) { 
      Binding binding = (Binding) o; 
      IStatus status = (IStatus) binding.getValidationStatus().getValue(); 
      if (!status.isOK()) { 
       formIsValid = false; 
      } 

      Control control = null; 
      if (binding.getTarget() instanceof ISWTObservable) { 
       ISWTObservable swtObservable = (ISWTObservable) binding.getTarget(); 
       control = (Control) swtObservable.getWidget(); 
      } 
      if (binding.getTarget() instanceof CalendarComboObservableValue) { 
       CalendarComboObservableValue observable = (CalendarComboObservableValue) binding.getTarget(); 
       control = (Control) observable.getControl(); 
      } 

      if (binding.getTarget() instanceof IViewerObservable) { 
       IViewerObservable observable = (IViewerObservable) binding.getTarget(); 
       control = observable.getViewer().getControl(); 
      } 

      ControlDecoration decoration = decoratorMap.get(control); 
      if (decoration != null) { 
       if (status.isOK() || status.matches(Status.WARNING)) { 
        decoration.hide(); 
       } else { 
        decoration.setDescriptionText(status.getMessage()); 
        decoration.show(); 
       } 
      } 
     } 
     if (saveBtn != null) 
      saveBtn.setEnabled(formIsValid); 
    } 
});

您可以添加代码如何创建aggregateValidationStatus？ –

@TillmannSeidel更新了代码 – XtremeBaumer

答

你AggregateValidationStatus只聚集在datBindingContext的绑定：

final AggregateValidationStatus aggregateValidationStatus = new AggregateValidationStatus(
    dataBindingContext.getBindings(), AggregateValidationStatus.MAX_SEVERITY);

的MultiValidator没有连接到一个单一的结合，但是整个环境。所以，如果你希望你的AggregateValidationStatus监控MultiValidator S以及，你应该使用不同的构造函数：

final AggregateValidationStatus aggregateValidationStatus = new AggregateValidationStatus(
    dataBindingContext, AggregateValidationStatus.MAX_SEVERITY);

这应该使MultiValidator的手动触发在handleChanged superfluent。

感谢您的答复，一旦我达到它将尝试它。如果它有效，我会接受答案 – XtremeBaumer

AggregateValidationStatus的ChangeListener中的JFace/Eclipse数据绑定触发器多值器

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