Java tutorial
/******************************************************************************* * Copyright (c) 2006, 2014 Mountainminds GmbH & Co. KG and Contributors * 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: * Marc R. Hoffmann - initial API and implementation * Brock Janiczak - link with selection option (SF #1774547) * ******************************************************************************/ package com.mountainminds.eclemma.internal.ui.coverageview; import java.util.ArrayList; import java.util.List; import org.eclipse.core.commands.IHandler; import org.eclipse.jdt.ui.actions.IJavaEditorActionDefinitionIds; import org.eclipse.jdt.ui.actions.JdtActionConstants; import org.eclipse.jdt.ui.actions.OpenAction; import org.eclipse.jface.action.MenuManager; import org.eclipse.jface.viewers.CellLabelProvider; import org.eclipse.jface.viewers.ILabelProvider; import org.eclipse.jface.viewers.IOpenListener; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.OpenEvent; import org.eclipse.jface.viewers.OwnerDrawLabelProvider; import org.eclipse.jface.viewers.TreeViewer; import org.eclipse.jface.viewers.TreeViewerColumn; import org.eclipse.jface.viewers.Viewer; import org.eclipse.jface.viewers.ViewerCell; import org.eclipse.jface.viewers.ViewerFilter; import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Tree; import org.eclipse.ui.IActionBars; import org.eclipse.ui.IMemento; import org.eclipse.ui.IViewSite; import org.eclipse.ui.IWorkbenchCommandConstants; import org.eclipse.ui.PartInitException; import org.eclipse.ui.actions.ActionFactory; import org.eclipse.ui.dialogs.PropertyDialogAction; import org.eclipse.ui.handlers.CollapseAllHandler; import org.eclipse.ui.handlers.IHandlerService; import org.eclipse.ui.model.WorkbenchLabelProvider; import org.eclipse.ui.part.IShowInTarget; import org.eclipse.ui.part.ShowInContext; import org.eclipse.ui.part.ViewPart; import org.jacoco.core.analysis.ICounter; import org.jacoco.core.analysis.ICoverageNode; import com.mountainminds.eclemma.core.CoverageTools; import com.mountainminds.eclemma.core.ICoverageSession; import com.mountainminds.eclemma.core.ISessionListener; import com.mountainminds.eclemma.core.analysis.IJavaCoverageListener; import com.mountainminds.eclemma.internal.ui.ContextHelp; import com.mountainminds.eclemma.internal.ui.RedGreenBar; import com.mountainminds.eclemma.internal.ui.UIMessages; /** * Implementation of the coverage view. */ public class CoverageView extends ViewPart implements IShowInTarget { public static final String ID = "com.mountainminds.eclemma.ui.CoverageView"; //$NON-NLS-1$ /** * Placeholder element for displaying "Loading..." in the coverage view. */ public static final Object LOADING_ELEMENT = new Object(); private final ViewSettings settings = new ViewSettings(); private final CellTextConverter cellTextConverter = new CellTextConverter(settings); private final MaxTotalCache maxTotalCache = new MaxTotalCache(settings); protected static final int COLUMN_ELEMENT = 0; protected static final int COLUMN_RATIO = 1; protected static final int COLUMN_COVERED = 2; protected static final int COLUMN_MISSED = 3; protected static final int COLUMN_TOTAL = 4; private TreeViewer viewer; // Actions private OpenAction openAction; private final List<IHandler> handlers = new ArrayList<IHandler>(); private SelectionTracker selectiontracker; private CoverageViewSorter sorter = new CoverageViewSorter(settings, this); private final ISessionListener descriptionUpdater = new ISessionListener() { public void sessionActivated(ICoverageSession session) { getViewSite().getShell().getDisplay().asyncExec(new Runnable() { public void run() { final ICoverageSession active = CoverageTools.getSessionManager().getActiveSession(); setContentDescription(active == null ? "" : active.getDescription()); //$NON-NLS-1$ } }); } public void sessionAdded(ICoverageSession addedSession) { // Nothing to do } public void sessionRemoved(ICoverageSession removedSession) { // Nothing to do } }; private final IJavaCoverageListener coverageListener = new IJavaCoverageListener() { public void coverageChanged() { getSite().getShell().getDisplay().asyncExec(new Runnable() { public void run() { maxTotalCache.reset(); viewer.setInput(CoverageTools.getJavaModelCoverage()); } }); } }; public void init(IViewSite site, IMemento memento) throws PartInitException { super.init(site, memento); settings.init(memento); } public void saveState(IMemento memento) { settings.storeColumnWidth(viewer); settings.save(memento); super.saveState(memento); } public void createPartControl(Composite parent) { ContextHelp.setHelp(parent, ContextHelp.COVERAGE_VIEW); Tree tree = new Tree(parent, SWT.MULTI); tree.setHeaderVisible(true); tree.setLinesVisible(true); viewer = new TreeViewer(tree); final TreeViewerColumn column0 = new TreeViewerColumn(viewer, SWT.LEFT); column0.setLabelProvider(new CellLabelProvider() { private final ILabelProvider delegate = new WorkbenchLabelProvider(); @Override public void update(ViewerCell cell) { if (cell.getElement() == LOADING_ELEMENT) { cell.setText(UIMessages.CoverageView_loadingMessage); cell.setImage(null); } else { cell.setText(cellTextConverter.getElementName(cell.getElement())); cell.setImage(delegate.getImage(cell.getElement())); } } }); sorter.addColumn(column0, COLUMN_ELEMENT); final TreeViewerColumn column1 = new TreeViewerColumn(viewer, SWT.RIGHT); column1.setLabelProvider(new OwnerDrawLabelProvider() { @Override public void update(ViewerCell cell) { if (cell.getElement() == LOADING_ELEMENT) { cell.setText(""); //$NON-NLS-1$ } else { cell.setText(cellTextConverter.getRatio(cell.getElement())); } } @Override protected void erase(Event event, Object element) { } @Override protected void measure(Event event, Object element) { } @Override protected void paint(Event event, Object element) { if (element != LOADING_ELEMENT) { ICounter counter = CoverageTools.getCoverageInfo(element).getCounter(settings.getCounters()); RedGreenBar.draw(event, column1.getColumn().getWidth(), counter, maxTotalCache.getMaxTotal(element)); } } }); sorter.addColumn(column1, COLUMN_RATIO); final TreeViewerColumn column2 = new TreeViewerColumn(viewer, SWT.RIGHT); column2.setLabelProvider(new CellLabelProvider() { @Override public void update(ViewerCell cell) { if (cell.getElement() == LOADING_ELEMENT) { cell.setText(""); //$NON-NLS-1$ } else { cell.setText(cellTextConverter.getCovered(cell.getElement())); } } }); sorter.addColumn(column2, COLUMN_COVERED); final TreeViewerColumn column3 = new TreeViewerColumn(viewer, SWT.RIGHT); column3.setLabelProvider(new CellLabelProvider() { @Override public void update(ViewerCell cell) { if (cell.getElement() == LOADING_ELEMENT) { cell.setText(""); //$NON-NLS-1$ } else { cell.setText(cellTextConverter.getMissed(cell.getElement())); } } }); sorter.addColumn(column3, COLUMN_MISSED); final TreeViewerColumn column4 = new TreeViewerColumn(viewer, SWT.RIGHT); column4.setLabelProvider(new CellLabelProvider() { @Override public void update(ViewerCell cell) { if (cell.getElement() == LOADING_ELEMENT) { cell.setText(""); //$NON-NLS-1$ } else { cell.setText(cellTextConverter.getTotal(cell.getElement())); } } }); sorter.addColumn(column4, COLUMN_TOTAL); viewer.addFilter(new ViewerFilter() { public boolean select(Viewer viewer, Object parentElement, Object element) { if (element == LOADING_ELEMENT) { return true; } else { final ICoverageNode c = CoverageTools.getCoverageInfo(element); if (c == null) { return false; } final ICounter instructions = c.getInstructionCounter(); if (instructions.getTotalCount() == 0) { return false; } if (settings.getHideUnusedElements() && instructions.getCoveredCount() == 0) { return false; } return true; } } }); settings.updateColumnHeaders(viewer); settings.restoreColumnWidth(viewer); viewer.setComparator(sorter); viewer.setContentProvider(new CoveredElementsContentProvider(settings)); viewer.setInput(CoverageTools.getJavaModelCoverage()); getSite().setSelectionProvider(viewer); selectiontracker = new SelectionTracker(this, viewer); createHandlers(); createActions(); viewer.addOpenListener(new IOpenListener() { public void open(OpenEvent event) { openAction.run((IStructuredSelection) event.getSelection()); } }); MenuManager menuMgr = new MenuManager("#PopupMenu"); //$NON-NLS-1$ menuMgr.setRemoveAllWhenShown(true); tree.setMenu(menuMgr.createContextMenu(tree)); getSite().registerContextMenu(menuMgr, viewer); CoverageTools.getSessionManager().addSessionListener(descriptionUpdater); CoverageTools.addJavaCoverageListener(coverageListener); } /** * Create local handlers. */ private void createHandlers() { activateHandler(SelectRootElementsHandler.ID, new SelectRootElementsHandler(settings, this)); activateHandler(SelectCountersHandler.ID, new SelectCountersHandler(settings, this)); activateHandler(HideUnusedElementsHandler.ID, new HideUnusedElementsHandler(settings, this)); activateHandler(IWorkbenchCommandConstants.EDIT_COPY, new CopyHandler(settings, getSite().getShell().getDisplay(), viewer)); activateHandler(IWorkbenchCommandConstants.FILE_REFRESH, new RefreshSessionHandler(CoverageTools.getSessionManager())); activateHandler(IWorkbenchCommandConstants.NAVIGATE_COLLAPSE_ALL, new CollapseAllHandler(viewer)); activateHandler(LinkWithSelectionHandler.ID, new LinkWithSelectionHandler(settings, selectiontracker)); } private void activateHandler(String id, IHandler handler) { final IHandlerService hs = (IHandlerService) getSite().getService(IHandlerService.class); hs.activateHandler(id, handler); handlers.add(handler); } private void createActions() { // For the following commands we use actions, as they are already available final IActionBars ab = getViewSite().getActionBars(); openAction = new OpenAction(getSite()); openAction.setActionDefinitionId(IJavaEditorActionDefinitionIds.OPEN_EDITOR); ab.setGlobalActionHandler(JdtActionConstants.OPEN, openAction); openAction.setEnabled(false); viewer.addSelectionChangedListener(openAction); PropertyDialogAction propertiesAction = new PropertyDialogAction(getSite(), viewer); propertiesAction.setActionDefinitionId(IWorkbenchCommandConstants.FILE_PROPERTIES); ab.setGlobalActionHandler(ActionFactory.PROPERTIES.getId(), propertiesAction); propertiesAction.setEnabled(false); viewer.addSelectionChangedListener(propertiesAction); } public void setFocus() { viewer.getTree().setFocus(); } public void dispose() { for (IHandler h : handlers) { h.dispose(); } handlers.clear(); CoverageTools.removeJavaCoverageListener(coverageListener); CoverageTools.getSessionManager().removeSessionListener(descriptionUpdater); selectiontracker.dispose(); super.dispose(); } protected void refreshViewer() { maxTotalCache.reset(); settings.updateColumnHeaders(viewer); viewer.refresh(); } public boolean show(ShowInContext context) { final ISelection selection = context.getSelection(); if (selection instanceof IStructuredSelection) { viewer.setSelection(selection); return true; } return false; } }