| /******************************************************************************* |
| * Copyright (c) 2004, 2012, 2015 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| * Dirk Fauth <dirk.fauth@googlemail.com> - Bug 463043 |
| *******************************************************************************/ |
| package org.eclipse.ui.internal; |
| |
| import org.eclipse.core.runtime.Adapters; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Status; |
| import org.eclipse.e4.core.services.events.IEventBroker; |
| import org.eclipse.e4.ui.model.application.ui.MUIElement; |
| import org.eclipse.e4.ui.model.application.ui.basic.MPart; |
| import org.eclipse.e4.ui.model.application.ui.basic.MPartStack; |
| import org.eclipse.e4.ui.workbench.IPresentationEngine; |
| import org.eclipse.e4.ui.workbench.UIEvents; |
| import org.eclipse.e4.ui.workbench.UIEvents.EventTags; |
| import org.eclipse.swt.custom.BusyIndicator; |
| import org.eclipse.swt.graphics.Image; |
| import org.eclipse.swt.widgets.Composite; |
| import org.eclipse.swt.widgets.Control; |
| import org.eclipse.ui.IMemento; |
| import org.eclipse.ui.IViewSite; |
| import org.eclipse.ui.PartInitException; |
| import org.eclipse.ui.internal.intro.IntroMessages; |
| import org.eclipse.ui.intro.IIntroPart; |
| import org.eclipse.ui.intro.IIntroSite; |
| import org.eclipse.ui.part.ViewPart; |
| import org.osgi.service.event.EventHandler; |
| |
| /** |
| * Simple view that will wrap an <code>IIntroPart</code>. |
| * |
| * @since 3.0 |
| */ |
| public final class ViewIntroAdapterPart extends ViewPart { |
| |
| private IIntroPart introPart; |
| |
| private IIntroSite introSite; |
| |
| private boolean handleZoomEvents = true; |
| |
| private IEventBroker eventBroker; |
| |
| private EventHandler zoomChangeListener = event -> { |
| if (!handleZoomEvents) |
| return; |
| |
| Object changedObj = event.getProperty(EventTags.ELEMENT); |
| if (!(changedObj instanceof MPartStack)) |
| return; |
| |
| if (changedObj != getIntroStack()) |
| return; |
| |
| if (UIEvents.isADD(event) |
| && UIEvents.contains(event, UIEvents.EventTags.NEW_VALUE, IPresentationEngine.MAXIMIZED)) { |
| setStandby(false); |
| } else if (UIEvents.isREMOVE(event) |
| && UIEvents.contains(event, UIEvents.EventTags.OLD_VALUE, IPresentationEngine.MAXIMIZED)) { |
| setStandby(true); |
| } |
| }; |
| |
| /** |
| * Adds a listener that toggles standby state if the view pane is zoomed. |
| */ |
| private void addZoomListener() { |
| ViewSite site = (ViewSite) getViewSite(); |
| MPart introModelPart = site.getModel(); |
| if (introModelPart == null || introModelPart.getContext() == null) |
| return; |
| |
| eventBroker = introModelPart.getContext().get(IEventBroker.class); |
| eventBroker.subscribe(UIEvents.ApplicationElement.TOPIC_TAGS, zoomChangeListener); |
| } |
| |
| private MPartStack getIntroStack() { |
| ViewSite site = (ViewSite) getViewSite(); |
| |
| MPart introModelPart = site.getModel(); |
| if (introModelPart.getCurSharedRef() != null) { |
| MUIElement introPartParent = introModelPart.getCurSharedRef().getParent(); |
| if (introPartParent instanceof MPartStack) { |
| return (MPartStack) introPartParent; |
| } |
| } |
| |
| return null; |
| } |
| |
| /** |
| * Forces the standby state of the intro part. |
| * |
| * @param standby update the standby state |
| */ |
| public void setStandby(final boolean standby) { |
| final Control control = (Control) ((PartSite) getSite()).getModel().getWidget(); |
| BusyIndicator.showWhile(control.getDisplay(), () -> { |
| try { |
| control.setRedraw(false); |
| introPart.standbyStateChanged(standby); |
| } finally { |
| control.setRedraw(true); |
| } |
| |
| }); |
| } |
| |
| /** |
| * Toggles handling of zoom events. |
| * |
| * @param handle whether to handle zoom events |
| */ |
| public void setHandleZoomEvents(boolean handle) { |
| handleZoomEvents = handle; |
| } |
| |
| @Override |
| public void createPartControl(Composite parent) { |
| addZoomListener(); |
| introPart.createPartControl(parent); |
| |
| ViewSite site = (ViewSite) getViewSite(); |
| MPart introModelPart = site.getModel(); |
| if (introModelPart.getCurSharedRef() != null) { |
| MUIElement parentElement = introModelPart.getCurSharedRef().getParent(); |
| if (parentElement instanceof MPartStack) { |
| setStandby(!parentElement.getTags().contains(IPresentationEngine.MAXIMIZED)); |
| } |
| } |
| } |
| |
| @Override |
| public void dispose() { |
| eventBroker.unsubscribe(zoomChangeListener); |
| |
| getSite().getWorkbenchWindow().getWorkbench().getIntroManager().closeIntro(introPart); |
| introPart.dispose(); |
| super.dispose(); |
| } |
| |
| @Override |
| public <T> T getAdapter(Class<T> adapter) { |
| return Adapters.adapt(introPart, adapter); |
| } |
| |
| @Override |
| public Image getTitleImage() { |
| return introPart.getTitleImage(); |
| } |
| |
| @Override |
| public String getTitle() { |
| // this method is called eagerly before our init method is called (and |
| // therefore before our intropart is created). By default return |
| // the view title from the view declaration. We will fire a property |
| // change to set the title to the proper value in the init method. |
| return introPart == null ? super.getTitle() : introPart.getTitle(); |
| } |
| |
| @Override |
| public void init(IViewSite site, IMemento memento) throws PartInitException { |
| super.init(site); |
| Workbench workbench = (Workbench) site.getWorkbenchWindow().getWorkbench(); |
| try { |
| introPart = workbench.getWorkbenchIntroManager().createNewIntroPart(); |
| // reset the part name of this view to be that of the intro title |
| setPartName(introPart.getTitle()); |
| introPart.addPropertyListener((source, propId) -> firePropertyChange(propId)); |
| introSite = new ViewIntroAdapterSite(site, workbench.getIntroDescriptor()); |
| introPart.init(introSite, memento); |
| |
| } catch (CoreException e) { |
| WorkbenchPlugin.log(IntroMessages.Intro_could_not_create_proxy, new Status(IStatus.ERROR, |
| WorkbenchPlugin.PI_WORKBENCH, IStatus.ERROR, IntroMessages.Intro_could_not_create_proxy, e)); |
| } |
| } |
| |
| @Override |
| public void setFocus() { |
| introPart.setFocus(); |
| } |
| |
| @Override |
| public void saveState(IMemento memento) { |
| introPart.saveState(memento); |
| } |
| } |