Java tutorial
/******************************************************************************* * Copyright (c) 2011 Wind River Systems, Inc. and others. 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: * Wind River Systems - initial API and implementation *******************************************************************************/ package org.eclipse.tm.te.ui.views.internal; import java.util.Collections; import org.eclipse.core.commands.Command; import org.eclipse.core.commands.ExecutionEvent; import org.eclipse.core.expressions.EvaluationContext; import org.eclipse.core.runtime.IAdaptable; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.Platform; import org.eclipse.core.runtime.Status; import org.eclipse.jface.action.GroupMarker; import org.eclipse.jface.action.IToolBarManager; import org.eclipse.jface.action.Separator; import org.eclipse.jface.viewers.DoubleClickEvent; import org.eclipse.jface.viewers.ISelection; import org.eclipse.osgi.util.NLS; import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.Composite; import org.eclipse.tm.te.ui.views.activator.UIPlugin; import org.eclipse.tm.te.ui.views.interfaces.IRoot; import org.eclipse.tm.te.ui.views.interfaces.IUIConstants; import org.eclipse.tm.te.ui.views.nls.Messages; import org.eclipse.ui.IAggregateWorkingSet; import org.eclipse.ui.ILocalWorkingSetManager; import org.eclipse.ui.ISources; import org.eclipse.ui.IWorkbenchActionConstants; import org.eclipse.ui.IWorkingSet; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.commands.ICommandService; import org.eclipse.ui.internal.navigator.framelist.Frame; import org.eclipse.ui.internal.navigator.framelist.FrameList; import org.eclipse.ui.internal.navigator.framelist.TreeFrame; import org.eclipse.ui.model.IWorkbenchAdapter; import org.eclipse.ui.navigator.CommonNavigator; import org.eclipse.ui.navigator.CommonViewer; import org.eclipse.ui.navigator.ICommonActionConstants; /** * Target Explorer View implementation. * <p> * The view is based on the Eclipse Common Navigator framework. */ @SuppressWarnings("restriction") public class View extends CommonNavigator { // The view root mode private int rootMode = IUIConstants.MODE_NORMAL; /** * Used only in the case of top level = MODE_NORMAL and only when some * working sets are selected. */ private String workingSetLabel; /** * The local working set manager instance. */ private final ILocalWorkingSetManager localWorkingSetManager = PlatformUI.getWorkbench() .createLocalWorkingSetManager(); /** * Constructor. */ public View() { } /* (non-Javadoc) * @see org.eclipse.ui.navigator.CommonNavigator#getInitialInput() */ @Override protected Object getInitialInput() { return ViewRoot.getInstance(); } /** * Sets the view's root mode. * * @param mode The root mode. * @see IUIConstants */ @Override public void setRootMode(int mode) { rootMode = mode; } /** * Returns the view's root mode. * * @return The root mode * @see IUIConstants */ @Override public int getRootMode() { return rootMode; } /** * Sets the working set label. * * @param label The working set label or <code>null</code>. */ @Override public void setWorkingSetLabel(String label) { workingSetLabel = label; } /** * Returns the working set label. * * @return The working set label or <code>null</code>. */ @Override public String getWorkingSetLabel() { return workingSetLabel; } /** * Returns the local working set manager instance. * * @return The local working set manager instance. */ public final ILocalWorkingSetManager getLocalWorkingSetManager() { return localWorkingSetManager; } /* (non-Javadoc) * @see org.eclipse.ui.navigator.CommonNavigator#dispose() */ @Override public void dispose() { localWorkingSetManager.dispose(); super.dispose(); } /* (non-Javadoc) * @see org.eclipse.ui.navigator.CommonNavigator#createCommonViewerObject(org.eclipse.swt.widgets.Composite) */ @Override protected CommonViewer createCommonViewerObject(Composite parent) { return new ViewViewer(getViewSite().getId(), parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL); } /* (non-Javadoc) * @see org.eclipse.ui.navigator.CommonNavigator#createPartControl(org.eclipse.swt.widgets.Composite) */ @Override public void createPartControl(Composite parent) { super.createPartControl(parent); // Add the additional custom Target Explorer toolbar groups addCustomToolbarGroups(); } /** * Adds the custom Target Explorer toolbar groups to the view toolbar. */ protected void addCustomToolbarGroups() { if (getViewSite() != null && getViewSite().getActionBars() != null) { IToolBarManager tbManager = getViewSite().getActionBars().getToolBarManager(); if (tbManager != null) { tbManager.insertBefore("FRAME_ACTION_GROUP_ID", new GroupMarker("group.new")); //$NON-NLS-1$ //$NON-NLS-2$ tbManager.appendToGroup("group.new", new Separator("group.configure")); //$NON-NLS-1$ //$NON-NLS-2$ tbManager.appendToGroup("group.configure", new Separator("group.connect")); //$NON-NLS-1$ //$NON-NLS-2$ tbManager.appendToGroup("group.connect", new Separator("group.symbols.rd")); //$NON-NLS-1$ //$NON-NLS-2$ tbManager.appendToGroup("group.symbols.rd", new GroupMarker("group.symbols")); //$NON-NLS-1$ //$NON-NLS-2$ tbManager.appendToGroup("group.symbols", new Separator("group.refresh")); //$NON-NLS-1$ //$NON-NLS-2$ tbManager.appendToGroup("group.refresh", new Separator(IWorkbenchActionConstants.MB_ADDITIONS)); //$NON-NLS-1$ } } } /* (non-Javadoc) * @see org.eclipse.ui.navigator.CommonNavigator#handleDoubleClick(org.eclipse.jface.viewers.DoubleClickEvent) */ @Override protected void handleDoubleClick(DoubleClickEvent dblClickEvent) { // If an handled and enabled command is registered for the ICommonActionConstants.OPEN // retargetable action id, redirect the double click handling to the command handler. // // Note: The default tree node expansion must be re-implemented in the active handler! ICommandService service = (ICommandService) PlatformUI.getWorkbench().getService(ICommandService.class); Command command = service != null ? service.getCommand(ICommonActionConstants.OPEN) : null; if (command != null && command.isDefined() && command.isEnabled()) { try { ISelection selection = dblClickEvent.getSelection(); EvaluationContext ctx = new EvaluationContext(null, selection); ctx.addVariable(ISources.ACTIVE_CURRENT_SELECTION_NAME, selection); ctx.addVariable(ISources.ACTIVE_MENU_SELECTION_NAME, selection); ctx.addVariable(ISources.ACTIVE_WORKBENCH_WINDOW_NAME, PlatformUI.getWorkbench().getActiveWorkbenchWindow()); ctx.addVariable(ISources.ACTIVE_PART_ID_NAME, getViewSite().getId()); ctx.addVariable(ISources.ACTIVE_PART_NAME, this); ctx.addVariable(ISources.ACTIVE_SITE_NAME, getViewSite()); ctx.addVariable(ISources.ACTIVE_SHELL_NAME, getViewSite().getShell()); ExecutionEvent event = new ExecutionEvent(command, Collections.EMPTY_MAP, this, ctx); command.executeWithChecks(event); } catch (Exception e) { // If the platform is in debug mode, we print the exception to the log view if (Platform.inDebugMode()) { IStatus status = new Status(IStatus.ERROR, UIPlugin.getUniqueIdentifier(), e.getLocalizedMessage(), e); UIPlugin.getDefault().getLog().log(status); } } } else { // Fallback to the default implementation super.handleDoubleClick(dblClickEvent); } } /** * The superclass does not deal with the content description, handle it here. * * @noreference */ @Override public void updateTitle() { super.updateTitle(); // Get the input from the common viewer Object input = getCommonViewer().getInput(); // The content description to set String contentDescription = null; if (input instanceof IAdaptable) { IWorkbenchAdapter adapter = (IWorkbenchAdapter) ((IAdaptable) input) .getAdapter(IWorkbenchAdapter.class); if (adapter != null) contentDescription = adapter.getLabel(input); } else if (input instanceof IRoot) { // The root node does not have a content description } else if (input != null && !(input instanceof IAggregateWorkingSet)) { contentDescription = input.toString(); } setContentDescription(contentDescription != null ? contentDescription : ""); //$NON-NLS-1$ } /** * Returns the tool tip text for the given element. * * @param element The element or <code>null</code>. * @return The tooltip or <code>null</code>. */ @Override public String getFrameToolTipText(Object element) { String result; if (element instanceof IAggregateWorkingSet) { result = Messages.View_workingSetModel; } else if (element instanceof IWorkingSet) { result = ((IWorkingSet) element).getLabel(); } else { result = super.getFrameToolTipText(element); } if (rootMode == IUIConstants.MODE_NORMAL) { if (workingSetLabel == null) return result; if (result.length() == 0) return NLS.bind(Messages.View_toolTip, workingSetLabel); return NLS.bind(Messages.View_toolTip2, result, workingSetLabel); } // Working set mode. During initialization element and viewer can be null. if (element != null && !(element instanceof IWorkingSet) && getCommonViewer() != null) { FrameList frameList = getCommonViewer().getFrameList(); // Happens during initialization if (frameList == null) return result; int index = frameList.getCurrentIndex(); IWorkingSet ws = null; while (index >= 0) { Frame frame = frameList.getFrame(index); if (frame instanceof TreeFrame) { Object input = ((TreeFrame) frame).getInput(); if (input instanceof IWorkingSet && !(input instanceof IAggregateWorkingSet)) { ws = (IWorkingSet) input; break; } } index--; } if (ws != null) { return NLS.bind(Messages.View_toolTip3, ws.getLabel(), result); } return result; } return result; } }