| /******************************************************************************* |
| * Copyright (c) 2009, 2018 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 |
| * Stefan Winkler <stefan@winklerweb.net> - Bug 537099 |
| ******************************************************************************/ |
| |
| package org.eclipse.ui.internal.views.markers; |
| |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Status; |
| import org.eclipse.jface.viewers.IContentProvider; |
| import org.eclipse.jface.viewers.TreeViewer; |
| import org.eclipse.ui.PlatformUI; |
| import org.eclipse.ui.progress.WorkbenchJob; |
| import org.eclipse.ui.views.markers.internal.MarkerMessages; |
| |
| /** |
| * The UIUpdateJob runs in the UI thread and is responsible updating the Markers |
| * view UI with newly updated markers. |
| * |
| * @since 3.6 |
| * |
| */ |
| class UIUpdateJob extends WorkbenchJob { |
| |
| private ExtendedMarkersView view; |
| |
| private boolean updating; |
| |
| private long lastUpdateTime=-1; |
| |
| /** |
| * @param view |
| * the markers view base class |
| */ |
| public UIUpdateJob(ExtendedMarkersView view) { |
| super(view.getSite().getShell().getDisplay(), MarkerMessages.MarkerView_19); |
| this.view = view; |
| updating = false; |
| } |
| |
| @Override |
| public IStatus runInUIThread(IProgressMonitor monitor) { |
| if(monitor.isCanceled()){ |
| return Status.CANCEL_STATUS; |
| } |
| TreeViewer viewer = view.getViewer(); |
| if (viewer.getControl().isDisposed()) { |
| return Status.CANCEL_STATUS; |
| } |
| |
| Markers clone = view.getActiveViewerInputClone(); |
| try { |
| updating = true; |
| monitor.beginTask(MarkerMessages.MarkerView_19, IProgressMonitor.UNKNOWN); |
| |
| if (monitor.isCanceled()) { |
| return Status.CANCEL_STATUS; |
| } |
| |
| // If there is only one category and the user has no saved state |
| // show it |
| if (view.getBuilder().isShowingHierarchy() |
| && view.getCategoriesToExpand().isEmpty()) { |
| MarkerCategory[] categories = clone.getCategories(); |
| if (categories != null && categories.length == 1) |
| view.getCategoriesToExpand().add( |
| categories[0].getDescription()); |
| } |
| |
| if (monitor.isCanceled()) |
| return Status.CANCEL_STATUS; |
| /* |
| * always use a clone for Thread safety. We avoid setting the clone |
| * as new input as we would offset the benefits of optimization in |
| * TreeViewer. |
| */ |
| clone= view.createViewerInputClone(); |
| if (clone == null) { |
| // do not update yet,we are changing |
| return Status.CANCEL_STATUS; |
| } |
| |
| if (view.isVisible()) { |
| /* |
| * we prefer not to check for cancellation beyond this since we have to show correct |
| * marker counts on UI, not an updating message. |
| */ |
| IContentProvider contentProvider= viewer.getContentProvider(); |
| contentProvider.inputChanged(viewer, view.getViewerInput(), clone); |
| |
| viewer.getTree().setRedraw(false); |
| viewer.refresh(true); |
| if (!monitor.isCanceled()) { |
| //do not expand if canceled |
| view.reexpandCategories(); |
| } |
| // clear the pending change flags |
| view.getBuilder().resetChangeFlags(); |
| } |
| |
| // show new counts |
| view.updateTitle(); |
| |
| lastUpdateTime = System.currentTimeMillis(); |
| } finally { |
| if (view.isVisible()) { |
| viewer.getTree().setRedraw(true); |
| view.updateStatusLine(viewer.getStructuredSelection()); |
| } |
| updating = false; |
| } |
| monitor.done(); |
| return Status.OK_STATUS; |
| } |
| |
| /** |
| * @return Returns true if updating. |
| */ |
| boolean isUpdating() { |
| return updating; |
| } |
| |
| @Override |
| public boolean shouldRun() { |
| if (!PlatformUI.isWorkbenchRunning()) { |
| return false; |
| } |
| return true; |
| } |
| |
| @Override |
| public boolean belongsTo(Object family) { |
| if (family.equals(view.MARKERSVIEW_UPDATE_JOB_FAMILY)) { |
| return true; |
| } |
| return super.belongsTo(family); |
| } |
| |
| /** |
| * @return Returns the lastUpdateTime. |
| */ |
| long getLastUpdateTime() { |
| return lastUpdateTime; |
| } |
| } |