Java tutorial
/******************************************************************************* * Copyright (c) 2004, 2009 Tasktop Technologies 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: * Xiaoyang Guan - initial API and implementation *******************************************************************************/ package org.eclipse.mylyn.internal.trac.wiki; import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.Status; import org.eclipse.core.runtime.jobs.Job; import org.eclipse.jface.viewers.ColumnLabelProvider; import org.eclipse.jface.viewers.IStructuredContentProvider; import org.eclipse.jface.viewers.TableViewer; import org.eclipse.jface.viewers.TableViewerColumn; import org.eclipse.jface.viewers.Viewer; import org.eclipse.jface.viewers.ViewerComparator; import org.eclipse.mylyn.internal.trac.core.TracCorePlugin; import org.eclipse.mylyn.internal.trac.core.client.AbstractWikiHandler; import org.eclipse.mylyn.internal.trac.core.model.TracWikiPage; import org.eclipse.mylyn.internal.trac.core.model.TracWikiPageInfo; import org.eclipse.mylyn.internal.trac.wiki.editor.TracWikiPageEditorInput; import org.eclipse.mylyn.tasks.core.TaskRepository; import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.team.ui.history.HistoryPage; import org.eclipse.ui.PlatformUI; /** * @author Xiaoyang Guan */ public class TracWikiPageHistoryPage extends HistoryPage { private TableViewer viewer; class DownloadPageHistoryJob extends Job { private final TaskRepository repository; private final TracWikiPage page; public DownloadPageHistoryJob(TaskRepository repository, TracWikiPage page) { super("Download Page History"); this.repository = repository; this.page = page; } @Override protected IStatus run(IProgressMonitor monitor) { AbstractWikiHandler wikiHandler = TracCorePlugin.getDefault().getConnector().getWikiHandler(); try { monitor.beginTask("Retrieving wiki page history", IProgressMonitor.UNKNOWN); final TracWikiPageInfo[] pageVersions = wikiHandler.getPageHistory(repository, page.getPageInfo().getPageName(), monitor); PlatformUI.getWorkbench().getDisplay().asyncExec(new Runnable() { public void run() { viewer.setInput(pageVersions); } }); } catch (CoreException e) { PlatformUI.getWorkbench().getDisplay().asyncExec(new Runnable() { public void run() { viewer.setInput(null); } }); } finally { monitor.done(); } return Status.OK_STATUS; } } @Override public boolean inputSet() { if (getInput() instanceof TracWikiPageEditorInput) { refresh(); return true; } return false; } class PageHistoryContentProvider implements IStructuredContentProvider { public Object[] getElements(Object inputElement) { return (TracWikiPageInfo[]) inputElement; } public void dispose() { } public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { } } @Override public void createControl(Composite parent) { viewer = new TableViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL | SWT.FULL_SELECTION); viewer.setContentProvider(new PageHistoryContentProvider()); TableViewerColumn column = new TableViewerColumn(viewer, SWT.NONE); column.getColumn().setWidth(80); column.getColumn().setText("Version"); column.getColumn().setMoveable(true); column.setLabelProvider(new ColumnLabelProvider() { @Override public String getText(Object element) { return ((TracWikiPageInfo) element).getVersion() + ""; } }); column = new TableViewerColumn(viewer, SWT.NONE); column.getColumn().setWidth(250); column.getColumn().setText("Date"); column.getColumn().setMoveable(true); column.setLabelProvider(new ColumnLabelProvider() { @Override public String getText(Object element) { return ((TracWikiPageInfo) element).getLastModified().toString(); } }); column = new TableViewerColumn(viewer, SWT.NONE); column.getColumn().setWidth(200); column.getColumn().setText("Author"); column.getColumn().setMoveable(true); column.setLabelProvider(new ColumnLabelProvider() { @Override public String getText(Object element) { return ((TracWikiPageInfo) element).getAuthor(); } }); column = new TableViewerColumn(viewer, SWT.NONE); column.getColumn().setWidth(200); column.getColumn().setText("Comment"); column.getColumn().setMoveable(true); column.setLabelProvider(new ColumnLabelProvider() { @Override public String getText(Object element) { return ((TracWikiPageInfo) element).getComment(); } }); viewer.getTable().setLinesVisible(true); viewer.getTable().setHeaderVisible(true); viewer.setComparator(new ViewerComparator() { @Override public int compare(Viewer viewer, Object e1, Object e2) { if (e1 instanceof TracWikiPageInfo && e2 instanceof TracWikiPageInfo) { // sort from the latest version to the earliest version return ((TracWikiPageInfo) e2).getVersion() - ((TracWikiPageInfo) e1).getVersion(); } return super.compare(viewer, e1, e2); } }); } @Override public Control getControl() { return viewer.getControl(); } @Override public void setFocus() { getControl().setFocus(); } public String getDescription() { return "Change History for " + getName(); } public String getName() { TracWikiPageEditorInput input = (TracWikiPageEditorInput) getInput(); return input.getPage().getPageInfo().getPageName() + " [" + input.getRepository().getRepositoryLabel() + "]"; } public boolean isValidInput(Object object) { if (object instanceof TracWikiPageEditorInput) { TracWikiPageEditorInput input = (TracWikiPageEditorInput) object; return input.getRepository() != null && input.getPage() != null; } return false; } public void refresh() { TracWikiPageEditorInput input = (TracWikiPageEditorInput) getInput(); (new DownloadPageHistoryJob(input.getRepository(), input.getPage())).schedule(); } @SuppressWarnings("rawtypes") public Object getAdapter(Class adapter) { return null; } }