| /******************************************************************************* |
| * 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 |
| * Boris Bokowski - bug 218269 |
| * Matthew Hall - bug 218269, 240444, 239900 |
| * Ashley Cambrell - bug 199179 |
| * Ovidio Mallo - bug 235195, 237856 |
| *******************************************************************************/ |
| package org.eclipse.jface.databinding.wizard; |
| |
| import org.eclipse.core.databinding.DataBindingContext; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.jface.databinding.dialog.DialogPageSupport; |
| import org.eclipse.jface.wizard.WizardPage; |
| |
| /** |
| * Connects the validation result from the given data binding context to the |
| * given wizard page, updating the wizard page's completion state and its error |
| * message accordingly. |
| * |
| * <p> |
| * The completion state of the wizard page will only be set to <code>true</code> |
| * if <i>all</i> of the following conditions are met: |
| * <ul> |
| * <li>The validation result from the data binding context has none of the |
| * severities {@link IStatus#ERROR} or {@link IStatus#CANCEL}.</li> |
| * <li>None of the validation status observables of the data binding context is |
| * stale.</li> |
| * </ul> |
| * </p> |
| * |
| * @noextend This class is not intended to be subclassed by clients. |
| * |
| * @since 1.1 |
| */ |
| public class WizardPageSupport extends DialogPageSupport { |
| private WizardPageSupport(WizardPage wizardPage, DataBindingContext dbc) { |
| super(wizardPage, dbc); |
| } |
| |
| /** |
| * Connect the validation result from the given data binding context to the |
| * given wizard page. Upon creation, the wizard page support will use the |
| * context's validation result to determine whether the page is complete. |
| * The page's error message will not be set at this time ensuring that the |
| * wizard page does not show an error right away. Upon any validation result |
| * change, {@link WizardPage#setPageComplete(boolean)} will be called |
| * reflecting the new validation result, and the wizard page's error message |
| * will be updated according to the current validation result. |
| * |
| * @param wizardPage |
| * @param dbc |
| * @return an instance of WizardPageSupport |
| */ |
| public static WizardPageSupport create(WizardPage wizardPage, |
| DataBindingContext dbc) { |
| return new WizardPageSupport(wizardPage, dbc); |
| } |
| |
| protected void handleStatusChanged() { |
| super.handleStatusChanged(); |
| boolean pageComplete = true; |
| if (currentStatusStale) { |
| pageComplete = false; |
| } else if (currentStatus != null) { |
| pageComplete = !currentStatus.matches(IStatus.ERROR |
| | IStatus.CANCEL); |
| } |
| ((WizardPage) getDialogPage()).setPageComplete(pageComplete); |
| } |
| } |