Source Code Cross Referenced for Checkbox.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 an HTML input element of type checkbox, populated by the specified property from the OgnlValueStack.
11:         * <!-- END SNIPPET: javadoc -->
12:         *
13:         * <p/> <b>Examples</b>
14:         *
15:         * <pre>
16:         * <!-- START SNIPPET: example -->
17:         * JSP:
18:         * &lt;ww:checkbox label="checkbox test" name="checkboxField1" value="aBoolean" fieldValue="true"/&gt;
19:         *
20:         * Velocity:
21:         * #tag( Checkbox "label=checkbox test" "name=checkboxField1" "value=aBoolean" )
22:         *
23:         * Resulting HTML (simple template, aBoolean == true):
24:         * &lt;input type="checkbox" name="checkboxField1" value="true" checked="checked" /&gt;
25:         *
26:         * <!-- END SNIPPET: example -->
27:         * </pre>
28:         *
29:         * @author Patrick Lightbody
30:         * @author Rene Gielen
31:         * @version $Revision: 2468 $
32:         * @since 2.2
33:         *
34:         * @ww.tag name="checkbox" tld-body-content="JSP" tld-tag-class="com.opensymphony.webwork.views.jsp.ui.CheckboxTag"
35:         * description="Render a checkbox input field"
36:         */
37:        public class Checkbox extends UIBean {
38:            final public static String TEMPLATE = "checkbox";
39:
40:            protected String fieldValue;
41:
42:            public Checkbox(OgnlValueStack stack, HttpServletRequest request,
43:                    HttpServletResponse response) {
44:                super (stack, request, response);
45:            }
46:
47:            protected String getDefaultTemplate() {
48:                return TEMPLATE;
49:            }
50:
51:            protected void evaluateExtraParams() {
52:                if (fieldValue != null) {
53:                    addParameter("fieldValue", findString(fieldValue));
54:                } else {
55:                    addParameter("fieldValue", "true");
56:                }
57:            }
58:
59:            protected Class getValueClassType() {
60:                return Boolean.class; // for checkboxes, everything needs to end up as a Boolean
61:            }
62:
63:            /**
64:             * The actual HTML value attribute of the checkbox.
65:             * @ww.tagattribute required="false" default="'true'"
66:             */
67:            public void setFieldValue(String fieldValue) {
68:                this.fieldValue = fieldValue;
69:            }
70:
71:        }