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Implementation of Renes suggestion for an improved ToolControl for
monitoring the Jobs progress
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144 changes: 83 additions & 61 deletions
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com.example.e4.rcp.todo/src/com/example/e4/rcp/todo/addons/WindowCloseListenerAddon.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,90 +1,112 @@ | ||
| package com.example.e4.rcp.todo.addons; | ||
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| import java.util.ArrayList; | ||
| import java.util.Collection; | ||
| import java.util.List; | ||
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| import javax.inject.Inject; | ||
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| import org.eclipse.e4.core.di.annotations.Optional; | ||
| import org.eclipse.e4.core.services.events.IEventBroker; | ||
| import org.eclipse.e4.ui.di.UIEventTopic; | ||
| import org.eclipse.e4.ui.model.application.MApplication; | ||
| import org.eclipse.e4.ui.model.application.ui.basic.MWindow; | ||
| import org.eclipse.e4.ui.workbench.IWorkbench; | ||
| import org.eclipse.e4.ui.workbench.UIEvents; | ||
| import org.eclipse.e4.ui.workbench.modeling.EModelService; | ||
| import org.eclipse.e4.ui.workbench.modeling.EPartService; | ||
| import org.eclipse.e4.ui.workbench.modeling.ElementMatcher; | ||
| import org.eclipse.e4.ui.workbench.modeling.IWindowCloseHandler; | ||
| import org.eclipse.jface.dialogs.IDialogConstants; | ||
| import org.eclipse.jface.dialogs.MessageDialog; | ||
| import org.eclipse.swt.widgets.Shell; | ||
| import org.osgi.service.event.Event; | ||
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| // @PostConstruct will not work as workbench gets instantiated after the processing of the add-ons | ||
| // @PostConstruct does not work as the workbench gets | ||
| // instantiated after the processing of the add-ons | ||
| // hence this approach uses method injection | ||
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| public class WindowCloseListenerAddon { | ||
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| @Inject | ||
| @Optional | ||
| MApplication application; | ||
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| @Inject | ||
| @Optional | ||
| EPartService partService; | ||
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| @Inject | ||
| @Optional | ||
| IWorkbench workbench; | ||
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| @Inject | ||
| @Optional | ||
| private void subscribeApplicationCompleted(@UIEventTopic(UIEvents.UILifeCycle.APP_STARTUP_COMPLETE) Event event) { | ||
| if (application!=null && partService != null &&workbench !=null ){ | ||
| registerCloseHandler(partService, workbench, application); | ||
| } | ||
| private void subscribeApplicationCompleted( | ||
| @UIEventTopic(UIEvents.UILifeCycle.APP_STARTUP_COMPLETE) final MApplication application, | ||
| final IWorkbench workbench) { | ||
| // only if a close of the main window is requested | ||
| MWindow mainWindow = findMainWindow(application); | ||
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| mainWindow.getContext().set(IWindowCloseHandler.class, new IWindowCloseHandler() { | ||
| @Override | ||
| public boolean close(MWindow window) { | ||
| Collection<EPartService> allPartServices = getAllPartServices(application); | ||
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| if (containsDirtyParts(allPartServices)) { | ||
| Shell shell = (Shell) window.getWidget(); | ||
| MessageDialog msgDialog = new MessageDialog(shell, "Close Application", null, | ||
| "Do you want to save the changes before you close the entire application?", | ||
| MessageDialog.QUESTION_WITH_CANCEL, new String[] { IDialogConstants.YES_LABEL, | ||
| IDialogConstants.NO_LABEL, IDialogConstants.CANCEL_LABEL }, | ||
| 0); | ||
| switch (msgDialog.open()) { | ||
| case 0: // YES: save all and close | ||
| saveAll(allPartServices); | ||
| return workbench.close(); | ||
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| case 1: // NO: save nothing and close | ||
| return workbench.close(); | ||
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| case 2: // CANCEL: prevent close | ||
| default: | ||
| return false; | ||
| } | ||
| } else { | ||
| Shell shell = (Shell) window.getWidget(); | ||
| if (MessageDialog.openConfirm(shell, "Close Application", | ||
| "Do you really want to close the entire application?")) { | ||
| return workbench.close(); | ||
| } | ||
| } | ||
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| return false; | ||
| } | ||
| }); | ||
| } | ||
| @Inject | ||
| @Optional | ||
| private void subscribeTopicChildrenChanged(@UIEventTopic(UIEvents.ElementContainer.TOPIC_CHILDREN) Event event) { | ||
| Object changedObj = event.getProperty(UIEvents.EventTags.ELEMENT); | ||
| System.out.println(changedObj); | ||
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| if (!(changedObj instanceof MApplication)) { | ||
| return; | ||
| } | ||
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| MApplication application = (MApplication) changedObj; | ||
| if (application!=null && partService != null && workbench !=null ){ | ||
| registerCloseHandler(partService, workbench, application); | ||
| } | ||
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| // only interested in changes to application | ||
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| private static MWindow findMainWindow(MApplication application) { | ||
| // instead of using the index you could also use a tag on the MWindow to | ||
| // mark the main window | ||
| return application.getChildren().get(0); | ||
| } | ||
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| private void registerCloseHandler(final EPartService partService, final IWorkbench workbench, | ||
| MApplication application) { | ||
| // each window gets its own close handler | ||
| for (MWindow window : application.getChildren()) { | ||
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| final Shell shell = (Shell) window.getWidget(); | ||
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| IWindowCloseHandler closeHandler = new IWindowCloseHandler() { | ||
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| @Override | ||
| public boolean close(MWindow window) { | ||
| if (partService.getDirtyParts().size() > 0) { | ||
| boolean close = MessageDialog.openConfirm(shell, "Unsaved data", "Really close?"); | ||
| if (close) { | ||
| workbench.close(); | ||
| } | ||
| return close; | ||
| } | ||
| return true; | ||
| private static Collection<EPartService> getAllPartServices(MApplication application) { | ||
| List<EPartService> partServices = new ArrayList<EPartService>(); | ||
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| EModelService modelService = application.getContext().get(EModelService.class); | ||
| List<MWindow> elements = modelService.findElements(application, MWindow.class, EModelService.IN_ACTIVE_PERSPECTIVE, | ||
| new ElementMatcher(null, MWindow.class, (List<String>) null)); | ||
| for (MWindow w : elements) { | ||
| if (w.isVisible() && w.isToBeRendered()) { | ||
| EPartService partService = w.getContext().get(EPartService.class); | ||
| if (partService != null) { | ||
| partServices.add(partService); | ||
| } | ||
| }; | ||
| window.getContext().set(IWindowCloseHandler.class, closeHandler); | ||
| } | ||
| } | ||
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| return partServices; | ||
| } | ||
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| private static boolean containsDirtyParts(Collection<EPartService> partServices) { | ||
| for (EPartService partService : partServices) { | ||
| if (!partService.getDirtyParts().isEmpty()) | ||
| return true; | ||
| } | ||
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| return false; | ||
| } | ||
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| private static void saveAll(Collection<EPartService> partServices) { | ||
| for (EPartService partService : partServices) { | ||
| partService.saveAll(false); // false: save without prompt | ||
| } | ||
| } | ||
| } | ||
| } |
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