Java tutorial
/******************************************************************************* * Copyright (c) 2010 Jens Cornelis. * All rights reserved. This program and the accompanying materials * are made available under the terms of the BSD License * which accompanies this distribution, and is available at * http://www.opensource.org/licenses/bsd-license.php * Contributor: Jens Cornelis - initial API and implementation *******************************************************************************/ package de.plugins.eclipse.depclipse.views; import java.beans.PropertyChangeEvent; import java.beans.PropertyChangeListener; import java.util.ArrayList; import java.util.List; import java.util.Map; import java.util.Map.Entry; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Table; import org.eclipse.ui.part.*; import org.eclipse.jdt.ui.JavaUI; import org.eclipse.jface.viewers.*; import org.eclipse.swt.custom.SashForm; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.layout.GridData; import org.eclipse.jface.action.*; import org.eclipse.ui.*; import org.eclipse.swt.widgets.Menu; import org.eclipse.swt.SWT; import de.plugins.eclipse.depclipse.DepclipsePlugin; /** * View showing the selected ProhibitedDependencies. * Observer of JDependData. * * @author Jens Cornelis */ public class ProhibitedDependencyView extends ViewPart implements PropertyChangeListener { /** * The ID of the view as specified by the extension. */ public static final String ID = "de.plugins.eclipse.depclipse.views.ProhibitedDependencyView"; //$NON-NLS-1$ private Table table; private TableViewer viewer; private SashForm sashForm; static final class ArrayContentProvider implements IStructuredContentProvider { String[] data; public void inputChanged(Viewer v, Object oldInput, Object newInput) { if (newInput != null && newInput instanceof String[]) { data = (String[]) newInput; } } public void dispose() { } public Object[] getElements(Object parent) { if (data == null) { return new Object[0]; } else return data; } } static final class ViewLabelProvider extends LabelProvider implements ITableLabelProvider { public String getColumnText(Object obj, int index) { if (obj instanceof String[]) { String[] arr = (String[]) obj; if (arr.length <= index) { return ""; //$NON-NLS-1$ } return arr[index]; } return getText(obj); } public Image getColumnImage(Object obj, int index) { String imageKey = org.eclipse.jdt.ui.ISharedImages.IMG_OBJS_PACKAGE; return JavaUI.getSharedImages().getImage(imageKey); } public Image getImage(Object obj) { return PlatformUI.getWorkbench().getSharedImages().getImage(ISharedImages.IMG_OBJ_ELEMENT); } } static final class NameSorter extends ViewerSorter { public int compare(Viewer viewer, Object e1, Object e2) { String strings1 = (String) e1; String strings2 = (String) e2; int result = strings1.compareTo(strings2); return result; } } /** * The constructor. */ public ProhibitedDependencyView() { super(); } /** * This is a callback that will allow us * to create the viewer and initialize it. */ public void createPartControl(Composite parent) { sashForm = new SashForm(parent, SWT.VERTICAL); sashForm.setLayoutData(new GridData(GridData.FILL_BOTH)); PlatformUI.getWorkbench().getHelpSystem().setHelp(sashForm, "de.plugins.eclipse.depclipse.jdepend"); //$NON-NLS-1$ table = createTable(sashForm); viewer = new TableViewer(table); viewer.setContentProvider(new ArrayContentProvider()); TableViewerColumn viewerNameColumn = new TableViewerColumn(viewer, SWT.NONE); viewerNameColumn.getColumn().setText("Prohibited Dependency"); //$NON-NLS-1$ viewerNameColumn.getColumn().setWidth(250); viewer.setLabelProvider(new ViewLabelProvider()); viewer.setSorter(new NameSorter()); viewer.setInput(getViewSite()); hookContextMenu(); hookDoubleClickAction(); contributeToActionBars(); // get initial data - subscribe as observer Map<String, List<String>> initialData = DepclipsePlugin.getJDependData().getSelectedBrokenDependencyRules(); updateUI(initialData); DepclipsePlugin.getJDependData().addPropertyChangeListener(this); } public void dispose() { DepclipsePlugin.getJDependData().removePropertyChangeListener(this); } protected Table createTable(Composite mySashForm) { Table table = new Table(mySashForm, SWT.H_SCROLL | SWT.V_SCROLL | SWT.SINGLE | SWT.FULL_SELECTION | SWT.BORDER); table.setHeaderVisible(true); table.setLinesVisible(true); table.setLayoutData(new GridData(GridData.FILL_BOTH)); TableLayout layout = new TableLayout(); table.setLayout(layout); return table; } private void hookContextMenu() { MenuManager menuMgr = new MenuManager("#PopupMenu"); //$NON-NLS-1$ menuMgr.setRemoveAllWhenShown(true); menuMgr.addMenuListener(new IMenuListener() { public void menuAboutToShow(IMenuManager manager) { ProhibitedDependencyView.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(new Separator()); } private void fillContextMenu(IMenuManager manager) { // Other plug-ins can contribute there actions here manager.add(new Separator(IWorkbenchActionConstants.MB_ADDITIONS)); } private void fillLocalToolBar(IToolBarManager manager) { } private void hookDoubleClickAction() { viewer.addDoubleClickListener(new IDoubleClickListener() { public void doubleClick(DoubleClickEvent event) { } }); } /** * Passing the focus request to the viewer's control. */ public void setFocus() { viewer.getControl().setFocus(); } protected void updateUI(Map<String, List<String>> brokenDependencies) { ArrayList<String> data = new ArrayList<String>(); for (Entry<String, List<String>> rootPackage : brokenDependencies.entrySet()) { for (String depPackage : brokenDependencies.get(rootPackage.getKey())) { if (!data.contains(depPackage)) { data.add(depPackage); } } } viewer.setInput(data.toArray(new String[0])); } @Override public void propertyChange(PropertyChangeEvent evt) { if (evt.getPropertyName().equals("SELECTION_CHANGED")) { //$NON-NLS-1$ PlatformUI.getWorkbench().getDisplay().syncExec(new Runnable() { public void run() { updateUI(DepclipsePlugin.getJDependData().getSelectedBrokenDependencyRules()); } }); } } }