| // Copyright 2004 The Apache Software Foundation |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package org.apache.tapestry.vlib; |
| |
| import org.apache.tapestry.PageRedirectException; |
| import org.apache.tapestry.callback.PageCallback; |
| import org.apache.tapestry.event.PageEvent; |
| import org.apache.tapestry.event.PageValidateListener; |
| import org.apache.tapestry.form.IFormComponent; |
| import org.apache.tapestry.html.BasePage; |
| import org.apache.tapestry.valid.IValidationDelegate; |
| import org.apache.tapestry.vlib.pages.Login; |
| |
| /** |
| * Base page used for pages that should be protected by the {@link Login} page. |
| * If the user is not logged in, they are redirected to the Login page first. |
| * Also, implements an error property and a validationDelegate. |
| * |
| * @author Howard Lewis Ship |
| * @version $Id$ |
| * |
| **/ |
| |
| public abstract class Protected extends BasePage implements IErrorProperty, PageValidateListener |
| { |
| private IValidationDelegate _validationDelegate; |
| |
| public void initialize() |
| { |
| _validationDelegate = null; |
| } |
| |
| public IValidationDelegate getValidationDelegate() |
| { |
| if (_validationDelegate == null) |
| _validationDelegate = new VirtualLibraryDelegate(); |
| |
| return _validationDelegate; |
| } |
| |
| protected void setErrorField(String componentId, String message) |
| { |
| IFormComponent component = (IFormComponent) getComponent(componentId); |
| |
| IValidationDelegate delegate = getValidationDelegate(); |
| |
| delegate.setFormComponent(component); |
| delegate.record(message, null); |
| } |
| |
| /** |
| * Returns true if the delegate indicates an error, or the error property is not null. |
| * |
| **/ |
| |
| protected boolean isInError() |
| { |
| return getError() != null || getValidationDelegate().getHasErrors(); |
| } |
| |
| /** |
| * Checks if the user is logged in. If not, they are sent |
| * to the {@link Login} page before coming back to whatever this |
| * page is. |
| * |
| **/ |
| |
| public void pageValidate(PageEvent event) |
| { |
| Visit visit = (Visit) getVisit(); |
| |
| if (visit != null && visit.isUserLoggedIn()) |
| return; |
| |
| // User not logged in ... redirect through the Login page. |
| |
| Login login = (Login) getRequestCycle().getPage("Login"); |
| |
| login.setCallback(new PageCallback(this)); |
| |
| throw new PageRedirectException(login); |
| } |
| } |