001    package org.gwtbootstrap3.client.ui;
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    
023    import org.gwtbootstrap3.client.ui.base.HasSubText;
024    import org.gwtbootstrap3.client.ui.constants.Styles;
025    import org.gwtbootstrap3.client.ui.html.Div;
026    
027    import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
028    import com.google.gwt.user.client.ui.HasText;
029    
030    /**
031     * Page header with optional subtext
032     * <p/>
033     * <h3>UiBinder example</h3>
034     * <p/>
035     * <pre>
036     * {@code
037     *     <b:PageHeader subText="Some subtext">Page header title</b:PageHeader>
038     * }
039     * </pre>
040     *
041     * @author Sven Jacobs
042     * @author Joshua Godi
043     */
044    public class PageHeader extends Div implements HasText, HasSubText {
045    
046        private String heading;
047        private String subText;
048    
049        public PageHeader() {
050            setStyleName(Styles.PAGE_HEADER);
051        }
052    
053        @Override
054        public void setText(final String text) {
055            heading = text;
056            render();
057        }
058    
059        @Override
060        public String getText() {
061            return heading;
062        }
063    
064        @Override
065        public void setSubText(final String subText) {
066            this.subText = subText;
067            render();
068        }
069    
070        @Override
071        public String getSubText() {
072            return subText;
073        }
074    
075        private void render() {
076            final SafeHtmlBuilder builder = new SafeHtmlBuilder();
077    
078            builder.appendHtmlConstant("<h1>");
079            builder.appendEscaped(heading == null ? "" : heading);
080    
081            if (subText != null && !subText.isEmpty()) {
082                builder.appendEscaped(" ");
083                builder.appendHtmlConstant("<small>");
084                builder.appendEscaped(subText);
085                builder.appendHtmlConstant("</small>");
086            }
087    
088            builder.appendHtmlConstant("</h1>");
089    
090            getElement().setInnerSafeHtml(builder.toSafeHtml());
091        }
092    }