Source Code Cross Referenced for TextAreaBase.java in  » IDE-Netbeans » visualweb.api.designer » com » sun » rave » web » ui » component » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » IDE Netbeans » visualweb.api.designer » com.sun.rave.web.ui.component 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003:         *
004:         * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005:         *
006:         * The contents of this file are subject to the terms of either the GNU
007:         * General Public License Version 2 only ("GPL") or the Common
008:         * Development and Distribution License("CDDL") (collectively, the
009:         * "License"). You may not use this file except in compliance with the
010:         * License. You can obtain a copy of the License at
011:         * http://www.netbeans.org/cddl-gplv2.html
012:         * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
013:         * specific language governing permissions and limitations under the
014:         * License.  When distributing the software, include this License Header
015:         * Notice in each file and include the License file at
016:         * nbbuild/licenses/CDDL-GPL-2-CP.  Sun designates this
017:         * particular file as subject to the "Classpath" exception as provided
018:         * by Sun in the GPL Version 2 section of the License file that
019:         * accompanied this code. If applicable, add the following below the
020:         * License Header, with the fields enclosed by brackets [] replaced by
021:         * your own identifying information:
022:         * "Portions Copyrighted [year] [name of copyright owner]"
023:         *
024:         * Contributor(s):
025:         *
026:         * The Original Software is NetBeans. The Initial Developer of the Original
027:         * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun
028:         * Microsystems, Inc. All Rights Reserved.
029:         *
030:         * If you wish your version of this file to be governed by only the CDDL
031:         * or only the GPL Version 2, indicate your decision by adding
032:         * "[Contributor] elects to include this software in this distribution
033:         * under the [CDDL or GPL Version 2] license." If you do not indicate a
034:         * single choice of license, a recipient has the option to distribute
035:         * your version of this file under either the CDDL, the GPL Version 2 or
036:         * to extend the choice of license to its licensees as provided above.
037:         * However, if you add GPL Version 2 code and therefore, elected the GPL
038:         * Version 2 license, then the option applies only if the new code is
039:         * made subject to such option by the copyright holder.
040:         */
041:        package com.sun.rave.web.ui.component;
042:
043:        import java.io.IOException;
044:        import javax.faces.component.UIComponent;
045:        import javax.faces.context.FacesContext;
046:        import javax.faces.el.MethodBinding;
047:        import javax.faces.el.ValueBinding;
048:
049:        /**
050:         * <p>Use the <code>ui:textArea</code> tag to create a multiple-line
051:         *     input field for text.</p>    
052:         * 
053:         * <h3>HTML Elements and Layout</h3>
054:         * 
055:         * <p>The textArea component renders an HTML &lt;textarea&gt; element.</p> 
056:         * 
057:         *     <h3>Configuring the <code>ui:textArea</code> Tag</h3>
058:         * 
059:         * <p>Use the <code>text</code> attribute to associate
060:         * the component with a model object that represents the current value,
061:         * by setting the attribute's value to a JavaServer Faces EL expression
062:         *     that evaluates to a backing bean or a backing bean property.</p>
063:         * 
064:         *     <p>To optionally specify a label for the component, use the
065:         *     <code>label</code> attribute, or specify a label facet.</p>
066:         * 
067:         *     <h3>Facets</h3>
068:         * 
069:         *     <ul>
070:         *     <li><code>label</code>: use this facet to specify a custom 
071:         *     component for the label.</li>
072:         *     <li><code>readOnly</code>: use this facet to specify a custom 
073:         *     component for displaying the readOnly value of this component.</li>
074:         *     </ul>
075:         * 
076:         *     <h3>Theme Identifiers</h3> 
077:         * 
078:         *     <p>The input element has a style class "TxtAra", or "TxtAraDis"
079:         *     when the field is disabled. If a label attribute is specified, the
080:         *     label element's class attribute is set to "LstAln" followed by
081:         *     "LblLvl1Txt", "LblLvl2Txt" or "LblLvl3Txt" depending on the label
082:         *     level.</p>  
083:         * 
084:         * 
085:         *     <h3>Client-side JavaScript functions</h3>
086:         * 
087:         *     <p>In all the functions below, <code>&lt;id&gt;</code> should be
088:         *     the generated id of the TextArea component. 
089:         * 
090:         *     <table cellpadding="2" cellspacing="2" border="1" 
091:         *            style="text-align: left; width: 100%;">
092:         *     <tbody>
093:         *     <tr>
094:         *     <td style="vertical-align">
095:         *     <code>field_setDisabled(&lt;id&gt;, &lt;disabled&gt;)</code>
096:         *     </td>
097:         *     <td style="vertical-align: top">
098:         *     Enable/disable the field. Set <code>&lt;disabled&gt;</code>
099:         *     to true to disable the component, or false to enable it.
100:         *     </td>
101:         *     </tr>
102:         *     <tr>
103:         *     <td style="vertical-align: top">
104:         *     <code>field_setValue(&lt;id&gt;, &lt;newValue&gt;)</code>
105:         *     </td>
106:         *     <td style="vertical-align: top">
107:         *     Set the value of the field to <code>&lt;newValue&gt;</code>.
108:         *     </td>
109:         *     </tr>
110:         *     <tr>
111:         *       <td style="vertical-align: top">
112:         *     <code>field_getValue(&lt;id&gt;)</code>
113:         *   </td>
114:         *     <td style="vertical-align: top">Get the value of the field.</td>
115:         *     </tr>
116:         *     <tr>
117:         *       <td style="vertical-align: top">
118:         *     <code>field_getInputElement(&lt;id&gt;)</code></td>
119:         *     <td style="vertical-align: top">
120:         *     Get hold of a reference to the textArea element rendered by this
121:         *     component.
122:         *     </td>
123:         *     </tr>
124:         *     <tr>
125:         *       <td style="vertical-align: top">
126:         *     <code>component_setVisible(&lt;id&gt;)</code>
127:         *   </td>
128:         *       <td style="vertical-align: top">Hide or show this component.
129:         *       </td>
130:         *     </tr>
131:         *   </tbody>
132:         * </table>
133:         * 
134:         * 
135:         *     <h3>Examples</h3>
136:         * 
137:         * <p> This example uses a backing bean <code>FieldTest</code> with a property
138:         *     string. The tag generates a textarea with a label "Comment:". The
139:         *     rows and columns attributes have been set, to ensure that the
140:         *     component has the same size on all browsers. </p> 
141:         * <pre>
142:         *      &lt;ui:textArea id="textarea" type="textarea"
143:         *                label="Comment:" 
144:         *                text="#{FieldTest.string}"
145:         *                rows="5" columns="50"/&gt;
146:         * </pre>
147:         * <p>Auto-generated component class.
148:         * Do <strong>NOT</strong> modify; all changes
149:         * <strong>will</strong> be lost!</p>
150:         */
151:
152:        public abstract class TextAreaBase extends
153:                com.sun.rave.web.ui.component.Field {
154:
155:            /**
156:             * <p>Construct a new <code>TextAreaBase</code>.</p>
157:             */
158:            public TextAreaBase() {
159:                super ();
160:                setRendererType("com.sun.rave.web.ui.TextArea");
161:            }
162:
163:            /**
164:             * <p>Return the identifier of the component family to which this
165:             * component belongs.  This identifier, in conjunction with the value
166:             * of the <code>rendererType</code> property, may be used to select
167:             * the appropriate {@link Renderer} for this component instance.</p>
168:             */
169:            public String getFamily() {
170:                return "com.sun.rave.web.ui.TextArea";
171:            }
172:
173:            // rows
174:            private int rows = Integer.MIN_VALUE;
175:            private boolean rows_set = false;
176:
177:            /**
178:             * <p>Number of rows used to render the textarea. You should set a value
179:             *     for this attribute to ensure that it is rendered correctly in all
180:             *     browsers.  Browsers vary in the default number of rows used for
181:             *     textarea fields.</p>
182:             */
183:            public int getRows() {
184:                if (this .rows_set) {
185:                    return this .rows;
186:                }
187:                ValueBinding _vb = getValueBinding("rows");
188:                if (_vb != null) {
189:                    Object _result = _vb.getValue(getFacesContext());
190:                    if (_result == null) {
191:                        return Integer.MIN_VALUE;
192:                    } else {
193:                        return ((Integer) _result).intValue();
194:                    }
195:                }
196:                return 2;
197:            }
198:
199:            /**
200:             * <p>Number of rows used to render the textarea. You should set a value
201:             *     for this attribute to ensure that it is rendered correctly in all
202:             *     browsers.  Browsers vary in the default number of rows used for
203:             *     textarea fields.</p>
204:             * @see #getRows()
205:             */
206:            public void setRows(int rows) {
207:                this .rows = rows;
208:                this .rows_set = true;
209:            }
210:
211:            /**
212:             * <p>Restore the state of this component.</p>
213:             */
214:            public void restoreState(FacesContext _context, Object _state) {
215:                Object _values[] = (Object[]) _state;
216:                super .restoreState(_context, _values[0]);
217:                this .rows = ((Integer) _values[1]).intValue();
218:                this .rows_set = ((Boolean) _values[2]).booleanValue();
219:            }
220:
221:            /**
222:             * <p>Save the state of this component.</p>
223:             */
224:            public Object saveState(FacesContext _context) {
225:                Object _values[] = new Object[3];
226:                _values[0] = super .saveState(_context);
227:                _values[1] = new Integer(this .rows);
228:                _values[2] = this.rows_set ? Boolean.TRUE : Boolean.FALSE;
229:                return _values;
230:            }
231:
232:        }
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