    001    // Copyright 2006, 2007, 2008, 2011 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 &lt;textarea&gt; element. The value parameter is almost always bound to a string,
    022     * but this is not an absolute requirement.  Since the component accepts informal parameters, the rows and cols attribute may
    023     * be set that way (there is not a formal parameter).
    024     * <p/>
    025     * Includes the <code>cols</code> attribute, if a {@link org.apache.tapestry5.beaneditor.Width} annotation is present on
    026     * the property bound to the value parameter.
    027     *
    028     * @see org.apache.tapestry5.corelib.components.TextOutput
    029     * @tapestrydoc
    030     * @see TextField
    031     * @see Form
    032     */
    033    public class TextArea extends AbstractTextField
    034    {
    035        private String value;
    036
    037        @Override
    038        protected final void writeFieldTag(MarkupWriter writer, String value)
    039        {
    040            writer.element("textarea",
    041
    042            "name", getControlName(),
    043
    044            "id", getClientId(),
    045
    046            "cols", getWidth());
    047
    048            // Save until needed in after()
    049
    050            this.value = value;
    051        }
    052
    053        final void afterRender(MarkupWriter writer)
    054        {
    055            // TextArea will not have a template.
    056
    057            if (value != null)
    058                writer.write(value);
    059
    060            writer.end(); // textarea
    061        }
    062
    063    }