org.apache.wicket.markup.html.form.TextArea.java Source code

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Here is the source code for org.apache.wicket.markup.html.form.TextArea.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.wicket.markup.html.form;

import org.apache.wicket.markup.ComponentTag;
import org.apache.wicket.markup.MarkupStream;
import org.apache.wicket.model.IModel;

/**
 * Multi-row text editing component.
 * 
 * @author Jonathan Locke
 * 
 * @param <T>
 *            The model object type
 */
public class TextArea<T> extends AbstractTextComponent<T> {
    private static final long serialVersionUID = 1L;

    /**
     * @see org.apache.wicket.Component#Component(String)
     */
    public TextArea(final String id) {
        super(id);
    }

    /**
     * @param id
     * @param model
     * @see org.apache.wicket.Component#Component(String, IModel)
     */
    public TextArea(final String id, final IModel<T> model) {
        super(id, model);
    }

    /**
     * Handle the container's body.
     * 
     * @param markupStream
     *            The markup stream
     * @param openTag
     *            The open tag for the body
     * @see org.apache.wicket.Component#onComponentTagBody(MarkupStream, ComponentTag)
     */
    @Override
    public void onComponentTagBody(final MarkupStream markupStream, final ComponentTag openTag) {
        checkComponentTag(openTag, "textarea");

        String value = getValue();
        if (value != null) {
            if (value.startsWith("\n")) {
                value = "\n" + value;
            } else if (value.startsWith("\r\n")) {
                value = "\r\n" + value;
            } else if (value.startsWith("\r")) {
                value = "\r" + value;
            }
        }
        replaceComponentTagBody(markupStream, openTag, value);
    }
}