[英]How to get the active part in a particular partstack in eclipse e4?
I have a button which creates parts. 我有一个创建零件的按钮。 I need to get the active part that is currently visible in he part stack and I am storing it as a key for some value. 我需要获取当前在零件堆栈中可见的活动零件,并将其存储为某个值的键。 How should I get the active part? 我应该如何获得积极参与? I have used the following code but it is getting all the parts in the partstack. 我使用了以下代码,但它获取了部分堆栈中的所有部分。
MPart graphpart = partService
.createPart("com.abc.xyz.project.partDescriptor.1");
MPartStack stack = (MPartStack) modelService.find(
"com.abc.xyz.project.partstack.2", application);
for (int i = 0; i < stack.getChildren().size(); i++) {
if (stack.getChildren().get(i).isVisible()) {
System.out.println("values"
+ ((MPart) stack.getChildren().get(i)).getLabel());
application.getTransientData().put(
((MPart) stack.getChildren().get(i)).getLabel(),
selectedFiles);
}
}
From a MPart
you can get its container directly with: 从MPart
可以直接通过以下方式获取其容器:
final MElementContainer<MUIElement> container = part.getParent();
(this will be the MPartStack
) (这将是MPartStack
)
You can then get the stacks currently selected child with: 然后,您可以使用以下命令获取当前选择的子堆栈:
MUIElement selected = container.getSelectedElement();
Using the parent of the part and its selected element also worked for me. 使用零件的父级及其选定的元素也对我有用。 partService.getActivePart() did not work because in our application we have several part stacks and I needed a part from a part stack which was not in focus at that moment. partService.getActivePart()无法正常工作,因为在我们的应用程序中,我们有几个零件栈,而我需要当时未重点关注的零件栈中的零件。 I also had to cast the MUIElement to a MPart because I needed to return an MPart, that was not a problem, since MPart extends from MUIElement. 我还必须将MUIElement强制转换为MPart,因为我需要返回MPart,这不是问题,因为MPart是从MUIElement扩展的。 Here's my code: 这是我的代码:
I have found the answer. 我找到了答案。 Its working now. 现在正在工作。
for (int i = 0; i < stack.getChildren().size(); i++) {
if (partService.isPartVisible((MPart) stack.getChildren().get(i))) {
System.out.println("Storage of values"
+ ((MPart) stack.getChildren().get(i)).getLabel());
application.getTransientData().put(
((MPart) stack.getChildren().get(i)).getLabel(),
selectedFiles);
}
}
We should make use of partservice to check particular stack is visible or not. 我们应该利用partservice来检查特定堆栈是否可见。
This is pretty simple with Eclipse E4: 使用Eclipse E4,这非常简单:
Inject the EPartService 注入EPartService
Then get from partService the active part. 然后从partService获得活动零件。
Hier is a sample of my RefreshHandler. Hier是我的RefreshHandler的示例。
public class RefreshHandler {
@Inject
EModelService modelService;
@Inject
MWindow window;
@Inject
IEventBroker broker;
@Inject
EPartService partService;
@Execute
public void execute() {
System.out.println(this.getClass().getSimpleName() + " called");
MPart activePart = partService.getActivePart();
if(activePart != null) {
System.out.println("--->" + activePart.getElementId());
}
}
@CanExecute
public boolean canExecute() {
MPerspective activePerspective = modelService.getActivePerspective(window);
if (activePerspective != null && activePerspective.getElementId()
.equals(IApplicationUIElementID.PERSPECTIVE_WORKINGSTORE_ID)) {
return true;
}
return false;
}
}
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