Java tutorial
/******************************************************************************* * Copyright (c) 2013 Cloud Bees, Inc. * All rights reserved. * This program is 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: * Cloud Bees, Inc. - initial API and implementation *******************************************************************************/ package com.cloudbees.eclipse.ui.views; import java.util.ArrayList; import java.util.Arrays; import java.util.Comparator; import java.util.List; import org.eclipse.core.runtime.IConfigurationElement; import org.eclipse.core.runtime.IExtension; import org.eclipse.core.runtime.Platform; import org.eclipse.jface.action.ActionContributionItem; import org.eclipse.jface.action.IContributionItem; import org.eclipse.jface.action.IMenuListener; import org.eclipse.jface.action.IMenuManager; import org.eclipse.jface.action.IToolBarManager; import org.eclipse.jface.action.MenuManager; import org.eclipse.jface.viewers.IOpenListener; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.OpenEvent; import org.eclipse.jface.viewers.TreeSelection; import org.eclipse.jface.viewers.TreeViewer; import org.eclipse.jface.viewers.Viewer; import org.eclipse.jface.viewers.ViewerSorter; import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Menu; import org.eclipse.ui.IActionBars; import org.eclipse.ui.part.ViewPart; import com.cloudbees.eclipse.core.CBRemoteChangeAdapter; import com.cloudbees.eclipse.core.CBRemoteChangeListener; import com.cloudbees.eclipse.core.CloudBeesCorePlugin; import com.cloudbees.eclipse.core.CloudBeesException; import com.cloudbees.eclipse.core.GrandCentralService; import com.cloudbees.eclipse.core.Region; import com.cloudbees.eclipse.core.forge.api.ForgeInstance; import com.cloudbees.eclipse.ui.AuthStatus; import com.cloudbees.eclipse.ui.CloudBeesUIPlugin; import com.cloudbees.eclipse.ui.internal.ActiveAccountAndRegionContributionItem; import com.cloudbees.eclipse.ui.internal.ConfigureSshKeysAction; import com.cloudbees.eclipse.ui.internal.ShowConsoleAction; import com.cloudbees.eclipse.ui.views.CBTreeSeparator.SeparatorLocation; public class CBTreeView extends ViewPart { public static final String ID = "com.cloudbees.eclipse.ui.views.CBTreeView"; private TreeViewer viewer; private ICBTreeProvider[] providers; private CBTreeAction configureSshAction = new ConfigureSshKeysAction(); private CBTreeAction showConsoleAction = new ShowConsoleAction(); //private CBTreeAction configureAccountAction = new ConfigureCloudBeesAction(); private CBRemoteChangeListener changeListener = new CBRemoteChangeAdapter() { public void activeAccountChanged(final String email, final String newAccountName, final Region region) { Display.getDefault().asyncExec(new Runnable() { public void run() { updateCD(email, newAccountName, region); } }); } }; private IMenuListener statusUpdateListener = new IMenuListener() { public void menuAboutToShow(IMenuManager manager) { IActionBars bars = getViewSite().getActionBars(); IMenuManager pullDownMenu = bars.getMenuManager(); IContributionItem[] items = pullDownMenu.getItems(); for (int i = 0; i < items.length; i++) { IContributionItem it = items[i]; if (it instanceof ActionContributionItem) { ActionContributionItem ita = (ActionContributionItem) it; //System.out.println("Action: "+ita.getAction()); ita.update(); } //System.out.println("IT: "+it); } /*pullDownMenu.markDirty(); pullDownMenu.updateAll(true);*/ //System.out.println("About to show a menu!"); } }; class NameSorter extends ViewerSorter { @Override public int compare(final Viewer viewer, final Object e1, final Object e2) { if (e1 instanceof ICBGroup && e2 instanceof ICBGroup) { return ((ICBGroup) e1).getOrder() - ((ICBGroup) e2).getOrder(); } if (e1 instanceof ForgeInstance && e2 instanceof ForgeInstance) { return ((ForgeInstance) e1).compareTo((ForgeInstance) e2); } return super.compare(viewer, e1, e2); } } public CBTreeView() { super(); GrandCentralService gcs; try { gcs = CloudBeesCorePlugin.getDefault().getGrandCentralService(); String accountName = gcs.getActiveAccountName(); String email = gcs.getEmail(); Region region = gcs.getActiveRegion(); updateCD(email, accountName, region); } catch (CloudBeesException e1) { //Ignore for now } IExtension[] extensions = Platform.getExtensionRegistry() .getExtensionPoint(CloudBeesUIPlugin.PLUGIN_ID, "cbTreeProvider").getExtensions(); List<ICBTreeProvider> prs = new ArrayList<ICBTreeProvider>(); for (IExtension extension : extensions) { for (IConfigurationElement element : extension.getConfigurationElements()) { try { Object provider = element.createExecutableExtension("class"); if (provider instanceof ICBTreeProvider) { prs.add((ICBTreeProvider) provider); } } catch (Exception e) { e.printStackTrace(); // FIXME } } } this.providers = prs.toArray(new ICBTreeProvider[prs.size()]); Arrays.sort(this.providers, new Comparator<ICBTreeProvider>() { public int compare(ICBTreeProvider o1, ICBTreeProvider o2) { return o1.getId().compareTo(o2.getId()); } }); CloudBeesUIPlugin.getDefault().addCBRemoteChangeListener(changeListener); } public ICBTreeProvider[] getProviders() { return this.providers; } @Override public void createPartControl(final Composite parent) { this.viewer = new TreeViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL); this.viewer.setContentProvider(new CBContentProvider(this)); this.viewer.setLabelProvider(new CBLabelProvider(this)); this.viewer.setSorter(new NameSorter()); this.viewer.setInput(getViewSite()); for (ICBTreeProvider provider : this.providers) { provider.setViewer(this.viewer); getSite().setSelectionProvider(this.viewer); } this.viewer.addOpenListener(new IOpenListener() { public void open(final OpenEvent event) { ISelection sel = event.getSelection(); if (sel instanceof TreeSelection) { Object el = ((TreeSelection) sel).getFirstElement(); //boolean opened = false; for (ICBTreeProvider provider : CBTreeView.this.providers) { //opened |= ; if (provider.open(el)) { break; } } /* if (!opened) { boolean exp = CBTreeView.this.viewer.getExpandedState(el); if (exp) { CBTreeView.this.viewer.collapseToLevel(el, 1); } else { CBTreeView.this.viewer.expandToLevel(el, 1); } } */ } } }); MenuManager popupMenu = new MenuManager(); popupMenu.setRemoveAllWhenShown(true); popupMenu.addMenuListener(new IMenuListener() { public void menuAboutToShow(final IMenuManager mgr) { } }); IActionBars bars = getViewSite().getActionBars(); IMenuManager pullDownMenu = bars.getMenuManager(); IToolBarManager toolbarMenu = bars.getToolBarManager(); for (ICBTreeProvider provider : this.providers) { for (CBTreeContributor contributor : provider.getContributors()) { if (contributor.isPopup()) { contributor.contributeTo(popupMenu); } if (contributor.isPullDown()) { contributor.contributeTo(pullDownMenu); } if (contributor.isToolbar()) { contributor.contributeTo(toolbarMenu); } } } pullDownMenu.add(new CBTreeSeparator(SeparatorLocation.PULL_DOWN)); pullDownMenu.add(this.showConsoleAction); pullDownMenu.add(new CBTreeSeparator(SeparatorLocation.PULL_DOWN)); pullDownMenu.add(this.configureSshAction); pullDownMenu.add(new CBTreeSeparator(SeparatorLocation.PULL_DOWN)); pullDownMenu.add(new ActiveAccountAndRegionContributionItem(true)); pullDownMenu.addMenuListener(statusUpdateListener); //pullDownMenu.add(this.configureAccountAction); Menu menu = popupMenu.createContextMenu(this.viewer.getTree()); this.viewer.getTree().setMenu(menu); getSite().registerContextMenu(popupMenu, this.viewer); //Not loading here anymore as there is now improved loading workflow //CloudBeesUIPlugin.getDefault().reloadAllJenkins(false); } @Override public void setFocus() { this.viewer.getControl().setFocus(); } @Override public void dispose() { for (ICBTreeProvider provider : this.providers) { provider.dispose(); } this.providers = null; CloudBeesUIPlugin.getDefault().removeCBRemoteChangeListener(changeListener); super.dispose(); } private void updateCD(String email, String newAccountName, Region region) { if (email == null) { CBTreeView.this.setContentDescription("Account not configured!"); return; } if (newAccountName != null && newAccountName.length() > 0) { CBTreeView.this .setContentDescription(" " + email + "; " + newAccountName + "; region: " + region.getLabel()); return; } String post = ""; if (CloudBeesUIPlugin.getDefault().getAuthStatus() != AuthStatus.OK) { post = " (user not authenticated!)"; } CBTreeView.this.setContentDescription(" " + email + post); } }