001package gwt.material.design.client.ui.html;
002
003/*
004 * #%L
005 * GwtBootstrap3
006 * %%
007 * Copyright (C) 2013 GwtBootstrap3
008 * %%
009 * Licensed under the Apache License, Version 2.0 (the "License");
010 * you may not use this file except in compliance with the License.
011 * You may obtain a copy of the License at
012 * 
013 *      http://www.apache.org/licenses/LICENSE-2.0
014 * 
015 * Unless required by applicable law or agreed to in writing, software
016 * distributed under the License is distributed on an "AS IS" BASIS,
017 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
018 * See the License for the specific language governing permissions and
019 * limitations under the License.
020 * #L%
021 */
022
023import com.google.gwt.dom.client.Document;
024import com.google.gwt.dom.client.Element;
025import com.google.gwt.event.logical.shared.AttachEvent;
026import com.google.gwt.user.client.ui.HasText;
027import com.google.gwt.user.client.ui.Widget;
028
029/**
030 * Simple text node.
031 * <p/>
032 * <h3>UiBinder example</h3>
033 * <p/>
034 * <pre>
035 * {@code
036 * <b:Text>
037 *    ...
038 * </b:Text>
039 * }
040 * </pre>
041 *
042 * @author Sven Jacobs
043 */
044public class Text extends Widget implements HasText {
045
046    private final com.google.gwt.dom.client.Text text;
047    private boolean isAttached;
048
049    /**
050     * Creates the default text node with empty text
051     */
052    public Text() {
053        this("");
054    }
055
056    /**
057     * Creates a text node with the desired text
058     *
059     * @param txt String text to display
060     */
061    public Text(final String txt) {
062        text = Document.get().createTextNode(txt);
063        setElement(text.<Element>cast());
064    }
065
066    /**
067     * {@inheritDoc}
068     */
069    @Override
070    public void setText(final String txt) {
071        text.setData(txt);
072    }
073
074    /**
075     * {@inheritDoc}
076     */
077    @Override
078    public String getText() {
079        return text.getData();
080    }
081
082    @Override
083    public boolean isAttached() {
084        return isAttached;
085    }
086
087    @Override
088    protected void onAttach() {
089        if (isAttached()) {
090            throw new IllegalStateException("Text is already attached!");
091        }
092        isAttached = true;
093        onLoad();
094        AttachEvent.fire(this, isAttached);
095    }
096
097    @Override
098    protected void onDetach() {
099        if (!isAttached()) {
100            throw new IllegalStateException("Text is not attached!");
101        }
102        isAttached = false;
103        AttachEvent.fire(this, false);
104    }
105}