001    package ezvcard.io.scribe;
002    
003    import java.util.List;
004    
005    import ezvcard.io.CannotParseException;
006    import ezvcard.io.html.HCardElement;
007    import ezvcard.parameter.ImageType;
008    import ezvcard.property.ImageProperty;
009    import ezvcard.util.DataUri;
010    
011    /*
012     Copyright (c) 2013, Michael Angstadt
013     All rights reserved.
014    
015     Redistribution and use in source and binary forms, with or without
016     modification, are permitted provided that the following conditions are met: 
017    
018     1. Redistributions of source code must retain the above copyright notice, this
019     list of conditions and the following disclaimer. 
020     2. Redistributions in binary form must reproduce the above copyright notice,
021     this list of conditions and the following disclaimer in the documentation
022     and/or other materials provided with the distribution. 
023    
024     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
025     ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
026     WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
027     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
028     ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
029     (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
030     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
031     ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
032     (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
033     SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
034     */
035    
036    /**
037     * Marshals properties that contain images.
038     * @param <T> the property class
039     * @author Michael Angstadt
040     */
041    public abstract class ImagePropertyScribe<T extends ImageProperty> extends BinaryPropertyScribe<T, ImageType> {
042            public ImagePropertyScribe(Class<T> clazz, String propertyName) {
043                    super(clazz, propertyName);
044            }
045    
046            @Override
047            protected ImageType _buildTypeObj(String type) {
048                    return ImageType.get(type, null, null);
049            }
050    
051            @Override
052            protected ImageType _buildMediaTypeObj(String mediaType) {
053                    return ImageType.get(null, mediaType, null);
054            }
055    
056            @Override
057            protected T _parseHtml(HCardElement element, List<String> warnings) {
058                    String elementName = element.tagName();
059                    if (!"img".equals(elementName)) {
060                            return super._parseHtml(element, warnings);
061                    }
062    
063                    String src = element.absUrl("src");
064                    if (src.length() == 0) {
065                            throw new CannotParseException(13);
066                    }
067    
068                    try {
069                            DataUri uri = new DataUri(src);
070                            ImageType mediaType = _buildMediaTypeObj(uri.getContentType());
071                            return _newInstance(uri.getData(), mediaType);
072                    } catch (IllegalArgumentException e) {
073                            //not a data URI
074                            //TODO create buildTypeObjFromExtension() method
075                            return _newInstance(src, null);
076                    }
077            }
078    }