bundles/org.eclipse.ui.workbench/Eclipse UI/org/eclipse/ui/internal/progress/ProgressView.java

/*******************************************************************************
 * Copyright (c) 2003 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.ui.internal.progress;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.action.IMenuListener;
import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.action.MenuManager;
import org.eclipse.jface.action.Separator;
import org.eclipse.jface.viewers.IContentProvider;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionProvider;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.ui.IViewPart;
import org.eclipse.ui.IWorkbenchActionConstants;
import org.eclipse.ui.part.ViewPart;
/**
 * The ProgressView is the class that shows the details of the current
 * workbench progress.
 */
public class ProgressView extends ViewPart implements IViewPart {
	ProgressTreeViewer viewer;
	Action cancelAction;
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.IWorkbenchPart#createPartControl(org.eclipse.swt.widgets.Composite)
	 */
	public void createPartControl(Composite parent) {
		viewer = new ProgressTreeViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL);
		viewer.setUseHashlookup(true);
		viewer.setSorter(ProgressManagerUtil.getProgressViewerSorter());
		initContentProvider();
		ProgressManagerUtil.initLabelProvider(viewer);
		initContextMenu();
		initPulldownMenu();
		getSite().setSelectionProvider(viewer);
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.IWorkbenchPart#setFocus()
	 */
	public void setFocus() {
	    if (viewer != null) {
	        viewer.getControl().setFocus();
	    }
	}
	/**
	 * Sets the content provider for the viewer.
	 */
	protected void initContentProvider() {
		IContentProvider provider = new ProgressTreeContentProvider(viewer);
		viewer.setContentProvider(provider);
		viewer.setInput(provider);
	}
	/**
	 * Initialize the context menu for the receiver.
	 */
	private void initContextMenu() {
		MenuManager menuMgr = new MenuManager("#PopupMenu"); //$NON-NLS-1$
		Menu menu = menuMgr.createContextMenu(viewer.getTree());
		createCancelAction();
		menuMgr.add(cancelAction);
		menuMgr.addMenuListener(new IMenuListener() {
			public void menuAboutToShow(IMenuManager manager) {
				JobInfo info = getSelectedInfo();
				if (info == null)
					return;
			}
		});
		menuMgr.add(new Separator(IWorkbenchActionConstants.MB_ADDITIONS));
		getSite().registerContextMenu(menuMgr, viewer);
		viewer.getTree().setMenu(menu);
	}
	private void initPulldownMenu() {
		IMenuManager menuMgr = getViewSite().getActionBars().getMenuManager();
		menuMgr.add(new Action(ProgressMessages.getString("ProgressView.VerboseAction"), //$NON-NLS-1$
				IAction.AS_CHECK_BOX) {
					/*
					 * (non-Javadoc)
					 * 
					 * @see org.eclipse.jface.action.Action#run()
					 */
					public void run() {
						ProgressViewUpdater updater = ProgressViewUpdater.getSingleton();
						updater.debug = !updater.debug;
						setChecked(updater.debug);
						updater.refreshAll();
					}
				});
	}
	/**
	 * Return the selected objects. If any of the selections are not JobInfos
	 * or there is no selection then return null.
	 * 
	 * @return JobInfo[] or <code>null</code>.
	 */
	private IStructuredSelection getSelection() {
		//If the provider has not been set yet move on.
		ISelectionProvider provider = getSite().getSelectionProvider();
		if (provider == null)
			return null;
		ISelection currentSelection = provider.getSelection();
		if (currentSelection instanceof IStructuredSelection) {
			return (IStructuredSelection) currentSelection;
		}
		return null;
	}
	/**
	 * Get the currently selected job info. Only return it if it is the only
	 * item selected and it is a JobInfo.
	 * 
	 * @return
	 */
	JobInfo getSelectedInfo() {
		IStructuredSelection selection = getSelection();
		if (selection != null && selection.size() == 1) {
			JobTreeElement element = (JobTreeElement) selection.getFirstElement();
			if (element.isJobInfo())
				return (JobInfo) element;
		}
		return null;
	}
	/**
	 * Create the cancel action for the receiver.
	 * 
	 * @return Action
	 */
	private void createCancelAction() {
		cancelAction = new Action(ProgressMessages.getString("ProgressView.CancelAction")) {//$NON-NLS-1$
			/*
			 * (non-Javadoc)
			 * 
			 * @see org.eclipse.jface.action.Action#run()
			 */
			public void run() {
				viewer.cancelSelection();
			}
		};
		
	}
}