Source Code Cross Referenced for DoubleSelect.java in  » J2EE » webwork-2.2.6 » com » opensymphony » webwork » components » Java Source Code / Java DocumentationJava Source Code and Java Documentation

01:        package com.opensymphony.webwork.components;
02:
03:        import com.opensymphony.xwork.util.OgnlValueStack;
04:
05:        import javax.servlet.http.HttpServletRequest;
06:        import javax.servlet.http.HttpServletResponse;
07:
08:        /**
09:         * <!-- START SNIPPET: javadoc -->
10:         * Renders two HTML select elements with second one changing displayed values depending on selected entry of first one.
11:         * <!-- END SNIPPET: javadoc -->
12:         *
13:         * <p/> <b>Examples</b>
14:         *
15:         * <pre>
16:         * <!-- START SNIPPET: example -->
17:         * &lt;ww:doubleselect label="doubleselect test1" name="menu" list="{'fruit','other'}" doubleName="dishes" doubleList="top == 'fruit' ? {'apple', 'orange'} : {'monkey', 'chicken'}" /&gt;
18:         * &lt;ww:doubleselect label="doubleselect test2" name="menu" list="#{'fruit':'Nice Fruits', 'other':'Other Dishes'}" doubleName="dishes" doubleList="top == 'fruit' ? {'apple', 'orange'} : {'monkey', 'chicken'}" /&gt;
19:         * <!-- END SNIPPET: example -->
20:         * </pre>
21:         *
22:         * @author Patrick Lightbody
23:         * @author Rene Gielen
24:         * @version $Revision: 2842 $
25:         * @since 2.2
26:         *
27:         * @ww.tag name="doubleselect" tld-body-content="JSP" tld-tag-class="com.opensymphony.webwork.views.jsp.ui.DoubleSelectTag"
28:         * description="Renders two HTML select elements with second one changing displayed values depending on selected entry of first one."
29:         */
30:        public class DoubleSelect extends DoubleListUIBean {
31:            final public static String TEMPLATE = "doubleselect";
32:
33:            public DoubleSelect(OgnlValueStack stack,
34:                    HttpServletRequest request, HttpServletResponse response) {
35:                super (stack, request, response);
36:            }
37:
38:            protected String getDefaultTemplate() {
39:                return TEMPLATE;
40:            }
41:
42:            public void evaluateExtraParams() {
43:                super .evaluateExtraParams();
44:
45:                // force the onchange parameter
46:                addParameter("onchange", getParameters().get("id")
47:                        + "Redirect(this.options.selectedIndex)");
48:            }
49:        }