001    // Copyright 2006, 2007, 2008 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    //     http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    
015    package org.apache.tapestry5.corelib.components;
016    
017    import org.apache.tapestry5.MarkupWriter;
018    import org.apache.tapestry5.corelib.base.AbstractTextField;
019    
020    /**
021     * TextArea component corresponds to a <textarea> element. The value parameter is almost always bound to a string,
022     * but this is not an absolute requirement.
023     * <p/>
024     * Includes the <code>cols</code> attribute, if a {@link org.apache.tapestry5.beaneditor.Width} annotation is present on
025     * the property bound to the value parameter.
026     *
027     * @see org.apache.tapestry5.corelib.components.TextOutput
028     */
029    public class TextArea extends AbstractTextField
030    {
031        private String value;
032    
033        @Override
034        protected final void writeFieldTag(MarkupWriter writer, String value)
035        {
036            writer.element("textarea",
037    
038                           "name", getControlName(),
039    
040                           "id", getClientId(),
041    
042                           "cols", getWidth());
043    
044            // Save until needed in after()
045    
046            this.value = value;
047        }
048    
049        final void afterRender(MarkupWriter writer)
050        {
051            // TextArea will not have a template.
052    
053            if (value != null) writer.write(value);
054    
055            writer.end(); // textarea
056        }
057    
058    }