Java tutorial
/******************************************************************************* * Copyright (c) 2011, 2013 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.tcf.te.ui.views.internal; import org.eclipse.core.commands.Command; import org.eclipse.core.commands.ParameterizedCommand; import org.eclipse.core.expressions.EvaluationContext; import org.eclipse.core.runtime.Assert; 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.ColumnViewerEditor; import org.eclipse.jface.viewers.ColumnViewerEditorActivationStrategy; import org.eclipse.jface.viewers.DoubleClickEvent; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.TreeViewerEditor; import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.Composite; import org.eclipse.tcf.te.ui.trees.TreeViewerEditorActivationStrategy; import org.eclipse.tcf.te.ui.views.activator.UIPlugin; import org.eclipse.tcf.te.ui.views.interfaces.IUIConstants; import org.eclipse.ui.IMemento; import org.eclipse.ui.ISources; import org.eclipse.ui.IWorkbenchActionConstants; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.commands.ICommandService; import org.eclipse.ui.handlers.IHandlerService; import org.eclipse.ui.navigator.CommonNavigator; import org.eclipse.ui.navigator.CommonViewer; import org.eclipse.ui.navigator.ICommonActionConstants; import org.eclipse.ui.navigator.IMementoAware; import org.eclipse.ui.views.properties.IPropertySheetPage; import org.eclipse.ui.views.properties.tabbed.ITabbedPropertySheetPageContributor; import org.eclipse.ui.views.properties.tabbed.TabbedPropertySheetPage; /** * View implementation. * <p> * The view is based on the Eclipse Common Navigator framework. */ public class View extends CommonNavigator implements ITabbedPropertySheetPageContributor { // 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 state used to persisted the expanded nodes of the navigator tree. IMementoAware expandingState; /** * Constructor. */ public View() { super(); } /* (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; } /* (non-Javadoc) * @see org.eclipse.ui.navigator.CommonNavigator#dispose() */ @Override public void dispose() { super.dispose(); } /* (non-Javadoc) * @see org.eclipse.ui.navigator.CommonNavigator#createCommonViewerObject(org.eclipse.swt.widgets.Composite) */ @Override protected CommonViewer createCommonViewerObject(Composite parent) { ViewViewer viewer = new ViewViewer(getViewSite().getId(), parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL); viewer.setComparer(new ViewViewerComparer()); // Define an editor activation strategy for the common viewer so as to be invoked only programmatically. ColumnViewerEditorActivationStrategy activationStrategy = new TreeViewerEditorActivationStrategy( getSite().getId(), viewer); TreeViewerEditor.create(viewer, null, activationStrategy, ColumnViewerEditor.DEFAULT); return viewer; } /* (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 toolbar groups addCustomToolbarGroups(); // Restore expanding state of the common viewer. expandingState = new ViewExpandingState(getCommonViewer()); if (getMemento() != null) { expandingState.restoreState(getMemento()); } } /** * Adds the custom 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.launch")); //$NON-NLS-1$ //$NON-NLS-2$ tbManager.appendToGroup("group.launch", new GroupMarker("group.launch.rundebug")); //$NON-NLS-1$ //$NON-NLS-2$ tbManager.appendToGroup("group.launch.rundebug", new GroupMarker("group.launch.modes")); //$NON-NLS-1$ //$NON-NLS-2$ tbManager.appendToGroup("group.launch.modes", new GroupMarker("group.launch.additions")); //$NON-NLS-1$ //$NON-NLS-2$ tbManager.appendToGroup("group.launch.additions", 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#saveState(org.eclipse.ui.IMemento) */ @Override public void saveState(IMemento aMemento) { super.saveState(aMemento); // Save expanding state of the common viewer. if (expandingState != null && aMemento != null) { expandingState.saveState(aMemento); } } /* (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 { IHandlerService handlerSvc = (IHandlerService) PlatformUI.getWorkbench() .getService(IHandlerService.class); Assert.isNotNull(handlerSvc); ISelection selection = dblClickEvent.getSelection(); EvaluationContext ctx = new EvaluationContext(handlerSvc.getCurrentState(), selection); ctx.addVariable(ISources.ACTIVE_CURRENT_SELECTION_NAME, selection); ctx.addVariable(ISources.ACTIVE_MENU_SELECTION_NAME, selection); ctx.addVariable("altPressed", Boolean.valueOf(dblClickEvent instanceof AltDoubleClickEvent)); //$NON-NLS-1$ ctx.setAllowPluginActivation(true); ParameterizedCommand pCmd = ParameterizedCommand.generateCommand(command, null); Assert.isNotNull(pCmd); handlerSvc.executeCommandInContext(pCmd, null, ctx); } 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); } } /* (non-Javadoc) * @see org.eclipse.ui.navigator.CommonNavigator#getAdapter(java.lang.Class) */ @Override public Object getAdapter(Class adapter) { if (adapter == IPropertySheetPage.class) { return new TabbedPropertySheetPage(this); } return super.getAdapter(adapter); } /* * (non-Javadoc) * @see org.eclipse.ui.views.properties.tabbed.ITabbedPropertySheetPageContributor#getContributorId() */ @Override public String getContributorId() { return IUIConstants.TABBED_PROPERTIES_CONTRIBUTOR_ID; } }