    001// Copyright 2006, 2008, 2009 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
    015package org.apache.tapestry5.dom;
    016
    017import java.io.PrintWriter;
    018import java.util.Map;
    019
    020/**
    021 * A type of node that contains text.
    022 */
    023public final class Text extends Node
    024{
    025    private final StringBuilder buffer;
    026
    027    Text(Element container, String text)
    028    {
    029        super(container);
    030
    031        buffer = new StringBuilder(text.length());
    032
    033        write(text);
    034    }
    035
    036    boolean isEmpty()
    037    {
    038        return buffer.length() == 0 || buffer.toString().trim().length() == 0;
    039    }
    040
    041    /**
    042     * Writes additional text into the node, appending it to any existing text.
    043     */
    044    public void write(String text)
    045    {
    046        buffer.append(text);
    047    }
    048
    049    public void writef(String format, Object... args)
    050    {
    051        write(String.format(format, args));
    052    }
    053
    054    @Override
    055    void toMarkup(Document document, PrintWriter writer, Map<String, String> namespaceURIToPrefix)
    056    {
    057        String encoded = document.getMarkupModel().encode(buffer.toString());
    058
    059        writer.print(encoded);
    060    }
    061}