| /******************************************************************************* |
| * Copyright (c) 2007, 2008 IBM Corporation 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.pde.internal.ua.ui.editor.toc.actions; |
| |
| import org.eclipse.jface.action.Action; |
| import org.eclipse.pde.internal.ua.core.toc.text.TocObject; |
| import org.eclipse.pde.internal.ua.core.toc.text.TocTopic; |
| |
| public class TocRemoveObjectAction extends Action { |
| |
| //The object designated for removal |
| private TocObject[] fTocObjects; |
| |
| //The next object to be selected after the |
| //selected object is removed |
| private TocObject fObjectToSelect; |
| |
| public TocRemoveObjectAction() { |
| // Adds the 'Delete' keybinding to the action when displayed |
| // in a context menu |
| setActionDefinitionId("org.eclipse.ui.edit.delete"); //$NON-NLS-1$ |
| |
| setText(TocActionMessages.TocRemoveObjectAction_remove); |
| fTocObjects = null; |
| fObjectToSelect = null; |
| } |
| |
| /** |
| * @param tocObjects the objects to remove |
| */ |
| public void setToRemove(TocObject[] tocObjects) { |
| fTocObjects = tocObjects; |
| } |
| |
| /** |
| * @param tocObject the object to remove |
| */ |
| public void setToRemove(TocObject tocObject) { |
| fTocObjects = new TocObject[] {tocObject}; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.action.Action#run() |
| */ |
| public void run() { |
| if (fTocObjects == null) |
| return; |
| |
| for (int i = 0; i < fTocObjects.length; ++i) { |
| if (fTocObjects[i] != null && fTocObjects[i].canBeRemoved()) { |
| TocObject parent = fTocObjects[i].getParent(); |
| if (parent != null && parent.canBeParent()) { |
| // Determine the object to select after the deletion |
| // takes place |
| determineNextSelection(parent, i); |
| // Remove the TOC object |
| ((TocTopic) parent).removeChild(fTocObjects[i]); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Determine the next object that should be selected |
| * after the designated object has been removed |
| * |
| * @param parent The parent of the deleted object |
| */ |
| private void determineNextSelection(TocObject parent, int index) { |
| // Select the next sibling |
| fObjectToSelect = parent.getNextSibling(fTocObjects[index]); |
| if (fObjectToSelect == null) { |
| // No next sibling |
| // Select the previous sibling |
| fObjectToSelect = parent.getPreviousSibling(fTocObjects[index]); |
| if (fObjectToSelect == null) { |
| // No previous sibling |
| // Select the parent |
| fObjectToSelect = parent; |
| } |
| } |
| } |
| |
| /** |
| * @return the object that should be selected |
| * after the current one is removed |
| */ |
| public TocObject getNextSelection() { |
| return fObjectToSelect; |
| } |
| } |