Source Code Cross Referenced for DoubleSelect.java in  » Web-Framework » struts-2.0.11 » org » apache » struts2 » components » Java Source Code / Java DocumentationJava Source Code and Java Documentation

01:        /*
02:         * $Id: DoubleSelect.java 501758 2007-01-31 07:56:28Z mrdon $
03:         *
04:         * Licensed to the Apache Software Foundation (ASF) under one
05:         * or more contributor license agreements.  See the NOTICE file
06:         * distributed with this work for additional information
07:         * regarding copyright ownership.  The ASF licenses this file
08:         * to you under the Apache License, Version 2.0 (the
09:         * "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:        package org.apache.struts2.components;
22:
23:        import javax.servlet.http.HttpServletRequest;
24:        import javax.servlet.http.HttpServletResponse;
25:
26:        import org.apache.struts2.views.annotations.StrutsTag;
27:
28:        import com.opensymphony.xwork2.util.ValueStack;
29:
30:        /**
31:         * <!-- START SNIPPET: javadoc -->
32:         * Renders two HTML select elements with second one changing displayed values depending on selected entry of first one.
33:         * <!-- END SNIPPET: javadoc -->
34:         *
35:         * <p/> <b>Examples</b>
36:         *
37:         * <pre>
38:         * <!-- START SNIPPET: example -->
39:         * &lt;s:doubleselect label="doubleselect test1" name="menu" list="{'fruit','other'}" doubleName="dishes" doubleList="top == 'fruit' ? {'apple', 'orange'} : {'monkey', 'chicken'}" /&gt;
40:         * &lt;s:doubleselect label="doubleselect test2" name="menu" list="#{'fruit':'Nice Fruits', 'other':'Other Dishes'}" doubleName="dishes" doubleList="top == 'fruit' ? {'apple', 'orange'} : {'monkey', 'chicken'}" /&gt;
41:         * <!-- END SNIPPET: example -->
42:         * </pre>
43:         *
44:         */
45:        @StrutsTag(name="doubleselect",tldTagClass="org.apache.struts2.views.jsp.ui.DoubleSelectTag",description="Renders two HTML select elements with second one changing displayed values depending on " + "selected entry of first one.")
46:        public class DoubleSelect extends DoubleListUIBean {
47:            final public static String TEMPLATE = "doubleselect";
48:
49:            public DoubleSelect(ValueStack stack, HttpServletRequest request,
50:                    HttpServletResponse response) {
51:                super (stack, request, response);
52:            }
53:
54:            protected String getDefaultTemplate() {
55:                return TEMPLATE;
56:            }
57:
58:            public void evaluateExtraParams() {
59:                super .evaluateExtraParams();
60:
61:                // force the onchange parameter
62:                addParameter("onchange", getParameters().get("id")
63:                        + "Redirect(this.options.selectedIndex)");
64:            }
65:        }