Java tutorial
/* * Boo Development Tools for the Eclipse IDE * Copyright (C) 2005 Rodrigo B. de Oliveira (rbo@acm.org) * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ package monolipse.ui.views; import java.util.*; import org.eclipse.core.resources.*; import org.eclipse.core.runtime.*; import org.eclipse.jdt.ui.IContextMenuConstants; import org.eclipse.jface.action.*; import org.eclipse.jface.preference.PreferenceDialog; import org.eclipse.jface.viewers.*; import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.*; import org.eclipse.ui.*; import org.eclipse.ui.actions.*; import org.eclipse.ui.dialogs.PreferencesUtil; import org.eclipse.ui.ide.IDE; import org.eclipse.ui.part.*; import org.eclipse.ui.views.navigator.ResourcePatternFilter; public class BooExplorerView extends ViewPart implements ISetSelectionTarget { public final static String ID_VIEW = "monolipse.ui.views.BooExplorerView"; private TreeViewer _viewer; private DrillDownAdapter _drillDownAdapter; BooExplorerActionGroup _actionGroup; /** * The constructor. */ public BooExplorerView() { } class RefreshOnProjectChange implements IResourceChangeListener { public void resourceChanged(IResourceChangeEvent event) { IResource resource = event.getResource(); if (null == resource || IResource.PROJECT == resource.getType()) { getDisplay().asyncExec(new Runnable() { public void run() { refresh(); } }); } } }; class RefreshOnBuild implements IResourceChangeListener { public void resourceChanged(IResourceChangeEvent event) { try { final Set<IProject> projects = new HashSet<IProject>(); event.getDelta().accept(new IResourceDeltaVisitor() { public boolean visit(IResourceDelta delta) throws CoreException { projects.add(delta.getResource().getProject()); return false; } }); for (Iterator<IProject> i = projects.iterator(); i.hasNext();) { final Object project = i.next(); getDisplay().asyncExec(new Runnable() { public void run() { if (!isDisposed()) { _viewer.refresh(project, true); } } }); } } catch (CoreException e) { e.printStackTrace(); } } } /** * This is a callback that will allow us to create the _viewer and * initialize it. */ public void createPartControl(Composite parent) { _viewer = new TreeViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL); _drillDownAdapter = new DrillDownAdapter(_viewer); _viewer.setUseHashlookup(true); _viewer.setSorter(new ViewerSorter() { public int category(Object element) { if (element instanceof IResource) { return 10 - ((IResource) element).getType(); } return 0; } }); configureViewFilters(); _viewer.setContentProvider(new BooExplorerContentProvider()); _viewer.setLabelProvider(new BooExplorerLabelProvider()); IWorkspace workspace = ResourcesPlugin.getWorkspace(); _viewer.setInput(workspace); getSite().setSelectionProvider(_viewer); workspace.addResourceChangeListener(new RefreshOnProjectChange(), IResourceChangeEvent.POST_CHANGE); workspace.addResourceChangeListener(new RefreshOnBuild(), IResourceChangeEvent.POST_BUILD); createActionGroups(); hookContextMenu(); hookDoubleClickAction(); contributeToActionBars(); } private void configureViewFilters() { ResourcePatternFilter resourcePatternFilter = new ResourcePatternFilter(); resourcePatternFilter.setPatterns(new String[] { ".*" }); _viewer.addFilter(resourcePatternFilter); _viewer.addFilter(DerivedResourceFilter.DEFAULT); } private void createActionGroups() { _actionGroup = new BooExplorerActionGroup(this); } private void hookContextMenu() { MenuManager menuMgr = new MenuManager("#PopupMenu"); menuMgr.setRemoveAllWhenShown(true); menuMgr.addMenuListener(new IMenuListener() { public void menuAboutToShow(IMenuManager manager) { BooExplorerView.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) { } private void fillContextMenu(IMenuManager menu) { createStandardMenuGroups(menu); _drillDownAdapter.addNavigationActions(menu); menu.add(new Separator()); _actionGroup.setContext(new ActionContext(getSelection())); _actionGroup.fillContextMenu(menu); _actionGroup.setContext(null); } private void createStandardMenuGroups(IMenuManager menu) { menu.add(new Separator(IContextMenuConstants.GROUP_NEW)); menu.add(new GroupMarker(IContextMenuConstants.GROUP_GOTO)); menu.add(new Separator(IContextMenuConstants.GROUP_OPEN)); menu.add(new GroupMarker(IContextMenuConstants.GROUP_SHOW)); menu.add(new Separator(IContextMenuConstants.GROUP_REORGANIZE)); menu.add(new Separator(IContextMenuConstants.GROUP_GENERATE)); menu.add(new Separator(IContextMenuConstants.GROUP_SEARCH)); menu.add(new Separator(IContextMenuConstants.GROUP_BUILD)); menu.add(new Separator(IContextMenuConstants.GROUP_ADDITIONS)); menu.add(new Separator(IContextMenuConstants.GROUP_VIEWER_SETUP)); menu.add(new Separator(IContextMenuConstants.GROUP_PROPERTIES)); } private IStructuredSelection getSelection() { return (IStructuredSelection) _viewer.getSelection(); } private void fillLocalToolBar(IToolBarManager manager) { _drillDownAdapter.addNavigationActions(manager); } private void hookDoubleClickAction() { _viewer.addDoubleClickListener(new IDoubleClickListener() { public void doubleClick(DoubleClickEvent event) { try { Object selectedElement = ((IStructuredSelection) event.getSelection()).getFirstElement(); if (selectedElement instanceof IResource) { openResource((IResource) selectedElement); } else if (selectedElement instanceof IAdaptable) { PreferenceDialog dialog = PreferencesUtil.createPropertyDialogOn(getSite().getShell(), (IAdaptable) selectedElement, null, null, null); dialog.setBlockOnOpen(true); dialog.open(); } } catch (PartInitException e) { e.printStackTrace(); } } private void openResource(IResource resource) throws PartInitException { if (IResource.FILE == resource.getType()) { // TODO: use openAction here IDE.openEditor(getWorkbench().getActiveWorkbenchWindow().getActivePage(), (IFile) resource); } else if (IResource.FOLDER == resource.getType()) { _drillDownAdapter.goInto(resource); } } }); } /** * Passing the focus request to the _viewer's control. */ public void setFocus() { _viewer.getControl().setFocus(); } IWorkbench getWorkbench() { return PlatformUI.getWorkbench(); } public void selectReveal(ISelection selection) { _viewer.setSelection(selection, true); } private Display getDisplay() { return _viewer.getControl().getDisplay(); } private void refresh() { if (!isDisposed()) { Object[] elements = _viewer.getExpandedElements(); _viewer.refresh(); _viewer.setExpandedElements(elements); } } private boolean isDisposed() { return _viewer.getControl().isDisposed(); } }