ResultView.java

package org.consea.gui;


import java.util.ArrayList;

import org.consea.Activator;
import org.consea.backend.ConseaSearchResonse;
import org.consea.backend.DoubleClickInView;
import org.eclipse.jface.action.Action;
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.action.Separator;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.ColumnLabelProvider;
import org.eclipse.jface.viewers.DoubleClickEvent;
import org.eclipse.jface.viewers.IDoubleClickListener;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.TableViewerColumn;
import org.eclipse.jface.viewers.ViewerSorter;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.TableColumn;
import org.eclipse.ui.IActionBars;
import org.eclipse.ui.ISharedImages;
import org.eclipse.ui.IWorkbenchActionConstants;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.part.ViewPart;
import org.osgi.framework.BundleContext;
import org.osgi.framework.FrameworkUtil;
import org.osgi.framework.ServiceReference;


/**
 * This sample class demonstrates how to plug-in a new
 * workbench view. The view shows data obtained from the
 * model. The sample creates a dummy model on the fly,
 * but a real implementation would connect to the model
 * available either in this or another plug-in (e.g. the workspace).
 * The view is connected to the model using a content provider.
 * <p>
 * The view uses a label provider to define how model
 * objects should be presented in the view. Each
 * view can present the same model objects using
 * different labels and icons, if needed. Alternatively,
 * a single label provider can be shared between views
 * in order to ensure that objects of the same type are
 * presented in the same way everywhere.
 * <p>
 */
public class ResultView extends ViewPart {

	/**
	 * The ID of the view as specified by the extension.
	 */
	public static final String ID = ResultView.class.getName();

	private TableViewer viewer;
	private Action action1;
	private Action action2;
	private Action doubleClickAction;

	private ResultViewContent contentProvider;
	
	class NameSorter extends ViewerSorter {
	}

	/**
	 * The constructor.
	 */
	public ResultView() {
	}

	/**
	 * This is a callback that will allow us
	 * to create the viewer and initialize it.
	 */
	public void createPartControl(Composite parent) {
		BundleContext ctx = FrameworkUtil.getBundle(Activator.class).getBundleContext();
		ServiceReference<ResultViewContent> sr = ctx.getServiceReference(ResultViewContent.class);
		contentProvider = ctx.getService(sr);
		
		viewer = new TableViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL | SWT.FULL_SELECTION | SWT.BORDER);
		contentProvider.setComposite(parent);
		contentProvider.setParent(viewer);
		createColumns();
		
		viewer.getTable().setHeaderVisible(true);
		viewer.setContentProvider(contentProvider);
		viewer.setLabelProvider(contentProvider);
		viewer.setSorter(new NameSorter());
		viewer.setInput(getViewSite());
		
		// Create the help context id for the viewer's control
		PlatformUI.getWorkbench().getHelpSystem().setHelp(viewer.getControl(), "pluginView.viewer");
		makeActions();
		hookContextMenu();
		hookDoubleClickAction();
		contributeToActionBars();
	}

	private void createColumns() {
		String[] titles = { "Class/Interface", "Component", "Value", "Type" };
		TableViewerColumn col;
		ColumnLabelProvider emptyLabelProvider = new ColumnLabelProvider() {
			public Image getImage(Object element) {
	    	  return null;  
			}};

	    // first column is for the first name
	    for (int i = 0; i < titles.length; i++) {
	    	col = createTableViewerColumn(titles[i], 100, i);
	    	col.setLabelProvider(emptyLabelProvider);
	    	col.getColumn().setImage(null);
		}
	    
	}
	
	private TableViewerColumn createTableViewerColumn(String title, int bound, final int colNumber) {
		final TableViewerColumn viewerColumn = new TableViewerColumn(viewer, SWT.NONE);
		final TableColumn column = viewerColumn.getColumn();
		column.setText(title);
		column.setWidth(bound);
		column.setResizable(true);
		column.setMoveable(true);
		viewerColumn.setLabelProvider(new ColumnLabelProvider(){
			
			@Override
			public String getToolTipText(Object element){
				if( ! (element instanceof ConseaSearchResonse) ){
					return "No Instance";
				}
				
				ConseaSearchResonse searchResponse = (ConseaSearchResonse)element;
				return searchResponse.getDescript().isEmpty() ? "No Description available" : searchResponse.getDescript();
			}
			
		});
		
		
		return viewerColumn;
	}

	private void hookContextMenu() {
		MenuManager menuMgr = new MenuManager("#PopupMenu");
		menuMgr.setRemoveAllWhenShown(true);
		menuMgr.addMenuListener(new IMenuListener() {
			public void menuAboutToShow(IMenuManager manager) {
				ResultView.this.fillContextMenu(manager);
			}
		});
		Menu menu = menuMgr.createContextMenu(viewer.getControl());
		viewer.getControl().setMenu(menu);
		getSite().registerContextMenu(menuMgr, viewer);
	}

	private void contributeToActionBars() {
		IActionBars bars = getViewSite().getActionBars();
		fillLocalPullDown(bars.getMenuManager());
		fillLocalToolBar(bars.getToolBarManager());
	}

	private void fillLocalPullDown(IMenuManager manager) {
		manager.add(action1);
		manager.add(new Separator());
		manager.add(action2);
	}

	private void fillContextMenu(IMenuManager manager) {
		manager.add(action1);
		manager.add(action2);
		manager.add(new Separator(IWorkbenchActionConstants.MB_ADDITIONS));
	}
	
	private void fillLocalToolBar(IToolBarManager manager) {
		manager.add(action1);
		manager.add(action2);
	}

	private void makeActions() {
		action1 = new Action() {
			public void run() {
				contentProvider.setEntries(new ArrayList<ConseaSearchResonse>());
				viewer.refresh();
				showMessage("Content cleared and refreshed");
			}
		};
		action1.setText("Action 1");
		action1.setToolTipText("Action 1 tooltip");
		action1.setImageDescriptor(PlatformUI.getWorkbench().getSharedImages().
			getImageDescriptor(ISharedImages.IMG_OBJS_INFO_TSK));
		
		action2 = new Action() {
			public void run() {
				viewer.refresh();
				showMessage("View refreshed");
			}
		};
		action2.setText("Action 2");
		action2.setToolTipText("Action 2 tooltip");
		action2.setImageDescriptor(PlatformUI.getWorkbench().getSharedImages().
				getImageDescriptor(ISharedImages.IMG_OBJS_INFO_TSK));
		
		doubleClickAction = new DoubleClickInView(viewer);
	}

	private void hookDoubleClickAction() {
		viewer.addDoubleClickListener(new IDoubleClickListener() {
			public void doubleClick(DoubleClickEvent event) {
				doubleClickAction.run();
			}
		});
	}
	
	private void showMessage(String message) {
		MessageDialog.openInformation(
			viewer.getControl().getShell(),
			"Sample View",
			message);
	}

	/**
	 * Passing the focus request to the viewer's control.
	 */
	public void setFocus() {
		viewer.getControl().setFocus();
	}
}