1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * The contents of this file are subject to the terms of the Liferay Enterprise
5    * Subscription License ("License"). You may not use this file except in
6    * compliance with the License. You can obtain a copy of the License by
7    * contacting Liferay, Inc. See the License for the specific language governing
8    * permissions and limitations under the License, including but not limited to
9    * distribution rights of the Software.
10   *
11   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
12   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
14   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
15   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
16   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
17   * SOFTWARE.
18   */
19  
20  package com.liferay.portlet.wiki.action;
21  
22  import com.liferay.portal.kernel.servlet.SessionErrors;
23  import com.liferay.portal.security.auth.PrincipalException;
24  import com.liferay.portal.struts.PortletAction;
25  import com.liferay.portlet.wiki.NoSuchNodeException;
26  import com.liferay.portlet.wiki.model.WikiNode;
27  
28  import javax.portlet.PortletConfig;
29  import javax.portlet.RenderRequest;
30  import javax.portlet.RenderResponse;
31  
32  import org.apache.struts.action.ActionForm;
33  import org.apache.struts.action.ActionForward;
34  import org.apache.struts.action.ActionMapping;
35  
36  /**
37   * <a href="ViewNodeAction.java.html"><b><i>View Source</i></b></a>
38   *
39   * @author Jorge Ferrer
40   *
41   */
42  public class ViewNodeAction extends PortletAction {
43  
44      public ActionForward render(
45              ActionMapping mapping, ActionForm form, PortletConfig portletConfig,
46              RenderRequest renderRequest, RenderResponse renderResponse)
47          throws Exception {
48  
49          try {
50              WikiNode node = ActionUtil.getNode(renderRequest);
51  
52              if (node == null) {
53                  ActionUtil.getFirstVisibleNode(renderRequest);
54              }
55          }
56          catch (Exception e) {
57              if (e instanceof NoSuchNodeException ||
58                  e instanceof PrincipalException) {
59  
60                  SessionErrors.add(renderRequest, e.getClass().getName());
61  
62                  return mapping.findForward("portlet.wiki.error");
63              }
64              else {
65                  throw e;
66              }
67          }
68  
69          return mapping.findForward(
70              getForward(renderRequest, "portlet.wiki.view_node"));
71      }
72  
73  }