| /******************************************************************************* |
| * Copyright (c) 2000, 2004 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.jface.wizard; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * An abstract implementation of a wizard page that manages a |
| * set of embedded wizards. |
| * <p> |
| * A wizard selection page should present a list of wizard nodes |
| * corresponding to other wizards. When the end user selects one of |
| * them from the list, the first page of the selected wizard becomes |
| * the next page. The only new methods introduced by this class are |
| * <code>getSelectedNode</code> and <code>setSelectedNode</code>. |
| * Otherwise, the subclass contract is the same as <code>WizardPage</code>. |
| * </p> |
| */ |
| public abstract class WizardSelectionPage extends WizardPage { |
| |
| /** |
| * The selected node; <code>null</code> if none. |
| */ |
| private IWizardNode selectedNode = null; |
| |
| /** |
| * List of wizard nodes that have cropped up in the past |
| * (element type: <code>IWizardNode</code>). |
| */ |
| private List selectedWizardNodes = new ArrayList(); |
| |
| /** |
| * Creates a new wizard selection page with the given name, and |
| * with no title or image. |
| * |
| * @param pageName the name of the page |
| */ |
| protected WizardSelectionPage(String pageName) { |
| super(pageName); |
| // Cannot finish from this page |
| setPageComplete(false); |
| } |
| |
| /** |
| * Adds the given wizard node to the list of selected nodes if |
| * it is not already in the list. |
| * |
| * @param node the wizard node, or <code>null</code> |
| */ |
| private void addSelectedNode(IWizardNode node) { |
| if (node == null) |
| return; |
| |
| if (selectedWizardNodes.contains(node)) |
| return; |
| |
| selectedWizardNodes.add(node); |
| } |
| |
| /** |
| * The <code>WizardSelectionPage</code> implementation of |
| * this <code>IWizardPage</code> method returns <code>true</code> |
| * if there is a selected node. |
| */ |
| public boolean canFlipToNextPage() { |
| return selectedNode != null; |
| } |
| |
| /** |
| * The <code>WizardSelectionPage</code> implementation of an <code>IDialogPage</code> |
| * method disposes of all nested wizards. Subclasses may extend. |
| */ |
| public void dispose() { |
| super.dispose(); |
| // notify nested wizards |
| for (int i = 0; i < selectedWizardNodes.size(); i++) { |
| ((IWizardNode) selectedWizardNodes.get(i)).dispose(); |
| } |
| } |
| |
| /** |
| * The <code>WizardSelectionPage</code> implementation of |
| * this <code>IWizardPage</code> method returns the first page |
| * of the currently selected wizard if there is one. |
| */ |
| public IWizardPage getNextPage() { |
| if (selectedNode == null) |
| return null; |
| |
| boolean isCreated = selectedNode.isContentCreated(); |
| |
| IWizard wizard = selectedNode.getWizard(); |
| |
| if (wizard == null) { |
| setSelectedNode(null); |
| return null; |
| } |
| |
| if (!isCreated) |
| // Allow the wizard to create its pages |
| wizard.addPages(); |
| |
| return wizard.getStartingPage(); |
| } |
| |
| /** |
| * Returns the currently selected wizard node within this page. |
| * |
| * @return the wizard node, or <code>null</code> if no node is selected |
| */ |
| public IWizardNode getSelectedNode() { |
| return selectedNode; |
| } |
| |
| /** |
| * Sets or clears the currently selected wizard node within this page. |
| * |
| * @param node the wizard node, or <code>null</code> to clear |
| */ |
| protected void setSelectedNode(IWizardNode node) { |
| addSelectedNode(node); |
| selectedNode = node; |
| if (isCurrentPage()) |
| getContainer().updateButtons(); |
| } |
| } |