1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21 package org.apache.struts.taglib.html;
22
23 import org.apache.struts.taglib.TagUtils;
24 import org.apache.struts.util.MessageResources;
25
26 import javax.servlet.jsp.JspException;
27
28 /**
29 * Tag for input fields of type "submit".
30 *
31 * @version $Rev: 471754 $ $Date: 2005-04-06 02:22:39 -0400 (Wed, 06 Apr 2005)
32 * $
33 */
34 public class SubmitTag extends BaseHandlerTag {
35
36
37 /**
38 * The message resources for this package.
39 */
40 protected static MessageResources messages =
41 MessageResources.getMessageResources(Constants.Package
42 + ".LocalStrings");
43
44 /**
45 * The name of the generated input field.
46 */
47 protected String property = null;
48
49 /**
50 * The body content of this tag (if any).
51 */
52 protected String text = null;
53
54 /**
55 * The value of the button label.
56 */
57 protected String value = null;
58
59
60
61 /**
62 * Return the property.
63 */
64 public String getProperty() {
65 return (this.property);
66 }
67
68 /**
69 * Set the property name.
70 *
71 * @param property The property name
72 */
73 public void setProperty(String property) {
74 this.property = property;
75 }
76
77 /**
78 * Return the label value.
79 */
80 public String getValue() {
81 return (this.value);
82 }
83
84 /**
85 * Set the label value.
86 *
87 * @param value The label value
88 */
89 public void setValue(String value) {
90 this.value = value;
91 }
92
93
94
95 /**
96 * Process the start of this tag.
97 *
98 * @throws JspException if a JSP exception has occurred
99 */
100 public int doStartTag() throws JspException {
101
102 this.text = null;
103
104 return (EVAL_BODY_TAG);
105 }
106
107 /**
108 * Save the associated label from the body content.
109 *
110 * @throws JspException if a JSP exception has occurred
111 */
112 public int doAfterBody() throws JspException {
113 if (bodyContent != null) {
114 String value = bodyContent.getString().trim();
115
116 if (value.length() > 0) {
117 text = value;
118 }
119 }
120
121 return (SKIP_BODY);
122 }
123
124 /**
125 * Process the end of this tag. <p> Support for Indexed property since
126 * Struts 1.1
127 *
128 * @throws JspException if a JSP exception has occurred
129 */
130 public int doEndTag() throws JspException {
131
132 StringBuffer results = new StringBuffer();
133
134 results.append(getElementOpen());
135 prepareAttribute(results, "name", prepareName());
136 prepareButtonAttributes(results);
137 results.append(prepareEventHandlers());
138 results.append(prepareStyles());
139 prepareOtherAttributes(results);
140 results.append(getElementClose());
141
142 TagUtils.getInstance().write(pageContext, results.toString());
143
144 return (EVAL_PAGE);
145 }
146
147 /**
148 * Render the opening element.
149 *
150 * @return The opening part of the element.
151 */
152 protected String getElementOpen() {
153 return "<input type=\"submit\"";
154 }
155
156 /**
157 * Prepare the name element
158 *
159 * @return The element name.
160 */
161 protected String prepareName()
162 throws JspException {
163 if (property == null) {
164 return null;
165 }
166
167
168 if (indexed) {
169 StringBuffer results = new StringBuffer();
170
171 results.append(property);
172 prepareIndex(results, null);
173
174 return results.toString();
175 }
176
177 return property;
178 }
179
180 /**
181 * Render the button attributes
182 *
183 * @param results The StringBuffer that output will be appended to.
184 */
185 protected void prepareButtonAttributes(StringBuffer results)
186 throws JspException {
187 prepareAttribute(results, "accesskey", getAccesskey());
188 prepareAttribute(results, "tabindex", getTabindex());
189 prepareValue(results);
190 }
191
192 /**
193 * Render the value element
194 *
195 * @param results The StringBuffer that output will be appended to.
196 */
197 protected void prepareValue(StringBuffer results) {
198
199 String label = value;
200
201 if ((label == null) && (text != null)) {
202 label = text;
203 }
204
205 if ((label == null) || (label.length() < 1)) {
206 label = getDefaultValue();
207 }
208
209 prepareAttribute(results, "value", label);
210 }
211
212 /**
213 * Return the default value.
214 *
215 * @return The default value if none supplied.
216 */
217 protected String getDefaultValue() {
218 return "Submit";
219 }
220
221 /**
222 * Release any acquired resources.
223 */
224 public void release() {
225 super.release();
226 property = null;
227 text = null;
228 value = null;
229 }
230 }