| /******************************************************************************* |
| * Copyright (c) 2009, 2014 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| ******************************************************************************/ |
| |
| 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.IStructuredSelection; |
| 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; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see |
| * org.eclipse.ui.progress.UIJob#runInUIThread(org.eclipse.core.runtime. |
| * IProgressMonitor) |
| */ |
| @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; |
| } |
| |
| //view.indicateUpdating(MarkerMessages.MarkerView_19, |
| // true); |
| |
| // 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(); |
| } |
| if (view.getBuilder().readChangeFlags()[0]) { |
| // indicate changes |
| } |
| } |
| |
| // show new counts |
| view.updateTitle(); |
| |
| lastUpdateTime = System.currentTimeMillis(); |
| } finally { |
| if (view.isVisible()) { |
| viewer.getTree().setRedraw(true); |
| view.updateStatusLine((IStructuredSelection)viewer.getSelection()); |
| // view.updateCategoryLabels(); |
| } |
| updating = false; |
| } |
| monitor.done(); |
| return Status.OK_STATUS; |
| } |
| |
| /** |
| * @return Returns true if updating. |
| */ |
| boolean isUpdating() { |
| return updating; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.core.runtime.jobs.Job#shouldRun() |
| */ |
| @Override |
| public boolean shouldRun() { |
| if (!PlatformUI.isWorkbenchRunning()) { |
| return false; |
| } |
| return true; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.core.runtime.jobs.Job#belongsTo(java.lang.Object) |
| */ |
| @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; |
| } |
| } |