View Javadoc

1   /*
2    * $Id: TextArea.java 651946 2008-04-27 13:41:38Z apetrelli $
3    *
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *  http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  package org.apache.struts2.dojo.components;
23  
24  import java.util.Random;
25  
26  import javax.servlet.http.HttpServletRequest;
27  import javax.servlet.http.HttpServletResponse;
28  
29  import org.apache.struts2.views.annotations.StrutsTag;
30  
31  import com.opensymphony.xwork2.util.ValueStack;
32  
33  /***
34   * <!-- START SNIPPET: javadoc -->
35   * Render Dojo Editor2 widget
36   * <!-- END SNIPPET: javadoc -->
37   *
38   */
39  @StrutsTag(name="textarea", tldTagClass="org.apache.struts2.dojo.views.jsp.ui.TextareaTag", description="Renders Dojo Editor2 widget")
40  public class TextArea extends org.apache.struts2.components.TextArea {
41      private final static transient Random RANDOM = new Random();
42  
43      public TextArea(ValueStack stack, HttpServletRequest request,
44          HttpServletResponse response) {
45          super(stack, request, response);
46      }
47      
48      public void evaluateExtraParams() {
49          super.evaluateExtraParams();
50  
51          // generate a random ID if not explicitly set and not parsing the content
52          Boolean parseContent = (Boolean)stack.getContext().get(Head.PARSE_CONTENT);
53          boolean generateId = (parseContent != null ? !parseContent : true);
54          
55          addParameter("pushId", generateId);
56          if ((this.id == null || this.id.length() == 0) && generateId) {
57              // resolves Math.abs(Integer.MIN_VALUE) issue reported by FindBugs 
58              // http://findbugs.sourceforge.net/bugDescriptions.html#RV_ABSOLUTE_VALUE_OF_RANDOM_INT
59              int nextInt = RANDOM.nextInt();
60              nextInt = nextInt == Integer.MIN_VALUE ? Integer.MAX_VALUE : Math.abs(nextInt);  
61              this.id = "widget_" + String.valueOf(nextInt);
62              addParameter("id", this.id);
63          }
64      }
65  
66      @Override
67      public String getTheme() {
68          return "ajax";
69      }
70  }