001    package ezvcard.util;
002    
003    import org.jsoup.Jsoup;
004    import org.jsoup.nodes.Document;
005    import org.jsoup.nodes.Element;
006    import org.jsoup.select.Elements;
007    
008    /*
009     Copyright (c) 2013, Michael Angstadt
010     All rights reserved.
011    
012     Redistribution and use in source and binary forms, with or without
013     modification, are permitted provided that the following conditions are met: 
014    
015     1. Redistributions of source code must retain the above copyright notice, this
016     list of conditions and the following disclaimer. 
017     2. Redistributions in binary form must reproduce the above copyright notice,
018     this list of conditions and the following disclaimer in the documentation
019     and/or other materials provided with the distribution. 
020    
021     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
022     ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
023     WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
024     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
025     ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
026     (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
027     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
028     ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
029     (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
030     SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
031    
032     The views and conclusions contained in the software and documentation are those
033     of the authors and should not be interpreted as representing official policies, 
034     either expressed or implied, of the FreeBSD Project.
035     */
036    
037    /**
038     * Generic HTML utility methods.
039     * @author Michael Angstadt
040     */
041    public class HtmlUtils {
042            /**
043             * Determines whether the given element is a child of one of the given
044             * parent elements.
045             * @param child the child element
046             * @param possibleParents the possible parents
047             * @return true if it is a child, false if not
048             */
049            public static boolean isChildOf(Element child, Elements possibleParents) {
050                    for (Element parent : child.parents()) {
051                            if (possibleParents.contains(parent)) {
052                                    return true;
053                            }
054                    }
055                    return false;
056            }
057    
058            /**
059             * Converts an HTML string to an HTML element.
060             * @param html the HTML
061             * @return the HTML element
062             */
063            public static Element toElement(String html) {
064                    return toElement(html, null);
065            }
066    
067            /**
068             * Converts an HTML string to an HTML element.
069             * @param html the HTML
070             * @param baseUrl the base URL
071             * @return the HTML element
072             */
073            public static Element toElement(String html, String baseUrl) {
074                    Document d = (baseUrl == null) ? Jsoup.parse(html) : Jsoup.parse(html, baseUrl);
075                    return d.getElementsByTag("body").first().children().first();
076            }
077    
078            private HtmlUtils() {
079                    //hide
080            }
081    }