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

01:        /*
02:         * Copyright (c) 2002-2006 by OpenSymphony
03:         * All rights reserved.
04:         */
05:        package com.opensymphony.webwork.components;
06:
07:        import com.opensymphony.xwork.util.OgnlValueStack;
08:
09:        import javax.servlet.http.HttpServletRequest;
10:        import javax.servlet.http.HttpServletResponse;
11:
12:        /**
13:         * <!-- START SNIPPET: javadoc -->
14:         * Render a reset button. The reset tag is used together with the form tag to provide form resetting.
15:         * The reset can have two different types of rendering:
16:         * <ul>
17:         * <li>input: renders as html &lt;input type="reset"...&gt;</li>
18:         * <li>button: renders as html &lt;button type="reset"...&gt;</li>
19:         * </ul>
20:         * Please note that the button type has advantages by adding the possibility to seperate the submitted value from the
21:         * text shown on the button face, but has issues with Microsoft Internet Explorer at least up to 6.0
22:         * <!-- END SNIPPET: javadoc -->
23:         *
24:         * <p/> <b>Examples</b>
25:         *
26:         * <pre>
27:         * <!-- START SNIPPET: example -->
28:         * &lt;ww:reset value="%{'Reset'}" /&gt;
29:         * <!-- END SNIPPET: example -->
30:         * </pre>
31:         *
32:         * <pre>
33:         * <!-- START SNIPPET: example2 -->
34:         * Render an button reset:
35:         * &lt;ww:reset type="button" value="%{'Reset'}" label="Reset the form"/&gt;
36:         * <!-- END SNIPPET: example2 -->
37:         * </pre>
38:         *
39:         * @author Rene Gielen
40:         * @version $Revision: 2511 $
41:         * @since 2.2.2
42:         *
43:         * @ww.tag name="reset" tld-body-content="JSP" tld-tag-class="com.opensymphony.webwork.views.jsp.ui.ResetTag"
44:         * description="Render a reset button"
45:         */
46:        public class Reset extends FormButton {
47:            final public static String TEMPLATE = "reset";
48:
49:            protected String action;
50:            protected String method;
51:            protected String align;
52:            protected String type;
53:
54:            public Reset(OgnlValueStack stack, HttpServletRequest request,
55:                    HttpServletResponse response) {
56:                super (stack, request, response);
57:            }
58:
59:            protected String getDefaultTemplate() {
60:                return Reset.TEMPLATE;
61:            }
62:
63:            public void evaluateParams() {
64:
65:                if (value == null) {
66:                    value = "Reset";
67:                }
68:
69:                super .evaluateParams();
70:            }
71:
72:            /**
73:             * Indicate whether the concrete button supports the type "image".
74:             *
75:             * @return <tt>false</tt> to indicate type image is supported.
76:             */
77:            protected boolean supportsImageType() {
78:                return false;
79:            }
80:
81:            /**
82:             * Supply a reset button text apart from reset value. Will have no effect for <i>input</i> type reset, since button
83:             * text will always be the value parameter.
84:             *
85:             * @ww.tagattribute required="false"
86:             */
87:            public void setLabel(String label) {
88:                super.setLabel(label);
89:            }
90:
91:        }