eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/ui/section/media/MediaDetailElement.java

   1 // $Id$
   2 /**
   3 * Copyright (C) 2014 EDIT
   4 * European Distributed Institute of Taxonomy
   5 * http://www.e-taxonomy.eu
   6 *
   7 * The contents of this file are subject to the Mozilla Public License Version 1.1
   8 * See LICENSE.TXT at the top of this package for the full license terms.
   9 */
  10 package eu.etaxonomy.taxeditor.ui.section.media;
  11
  12 import java.net.URI;
  13 import java.util.List;
  14 import java.util.Set;
  15
  16 import org.eclipse.swt.SWT;
  17 import org.eclipse.swt.widgets.Label;
  18
  19 import eu.etaxonomy.cdm.common.media.ImageInfo;
  20 import eu.etaxonomy.cdm.model.media.Media;
  21 import eu.etaxonomy.cdm.model.media.MediaRepresentation;
  22 import eu.etaxonomy.cdm.model.media.MediaRepresentationPart;
  23 import eu.etaxonomy.cdm.model.media.MediaUtils;
  24 import eu.etaxonomy.taxeditor.model.MessagingUtils;
  25 import eu.etaxonomy.taxeditor.preference.IPreferenceKeys;
  26 import eu.etaxonomy.taxeditor.preference.PreferencesUtil;
  27 import eu.etaxonomy.taxeditor.ui.element.CdmFormFactory;
  28 import eu.etaxonomy.taxeditor.ui.element.ICdmFormElement;
  29 import eu.etaxonomy.taxeditor.ui.element.ImageElement;
  30 import eu.etaxonomy.taxeditor.ui.element.LayoutConstants;
  31 import eu.etaxonomy.taxeditor.ui.element.UriWithLabelElement;
  32 import eu.etaxonomy.taxeditor.ui.section.AbstractCdmDetailElement;
  33
  34 /**
  35  * @author pplitzner
  36  * @date 25.08.2014
  37  *
  38  */
  39 public class MediaDetailElement extends AbstractCdmDetailElement<Media>{
  40
  41     private UriWithLabelElement textUri;
  42     private MediaRepresentationSection section_mediaRepresentation;
  43
  44     private boolean isAdvancedMediaView;
  45     private MediaRepresentationPart singleMediaRepresentationPart;
  46     private ICdmFormElement parentFormElement;
  47     private int style;
  48
  49     /**
  50      * Used to store the URI even if it is invalid and thus cannot be stored in CDM
  51      */
  52     private String uriBuffer;
  53     private ImageElement element_image;
  54     private Label lblNoImage;
  55
  56     public MediaDetailElement(CdmFormFactory formFactory, ICdmFormElement formElement) {
  57         super(formFactory, formElement);
  58     }
  59
  60     @Override
  61     protected void createControls(ICdmFormElement formElement, Media entity, int style) {
  62         this.parentFormElement = formElement;
  63         this.style = style;
  64     }
  65
  66     @Override
  67     public void setEntity(Media entity) {
  68         super.setEntity(entity);
  69         if(singleMediaRepresentationPart==null){
  70             singleMediaRepresentationPart = MediaUtils.initFirstMediaRepresentationPart(entity, true);
  71         }
  72         initIsAdvancedMediaView();
  73         showAdvancedView();
  74     }
  75
  76     @Override
  77     public void handleEvent(Object eventSource){
  78         if(eventSource==textUri){
  79             textUri.setBackground(getPersistentBackground());
  80             URI uri = textUri.parseText();
  81             singleMediaRepresentationPart.setUri(uri);
  82             if(uri==null){
  83                 uriBuffer=textUri.getText();
  84             }
  85             else{
  86                 createImageElement(uri);
  87             }
  88         }
  89     }
  90
  91     private void createImageElement(URI uri) {
  92         ImageInfo imageInfo;
  93         try {
  94             imageInfo = ImageInfo.NewInstance(uri, 10000);
  95             singleMediaRepresentationPart.getMediaRepresentation().setMimeType(imageInfo.getMimeType());
  96             singleMediaRepresentationPart.getMediaRepresentation().setSuffix(imageInfo.getSuffix());
  97             element_image = formFactory.createImageElement(parentFormElement, uri, style);
  98             element_image.initImageUri(uri);
  99             element_image.loadImage();
 100             if(uri == null){
 101                 return;
 102             }
 103             if(lblNoImage!=null){
 104                 lblNoImage.dispose();
 105             }
 106             lblNoImage = null;
 107         } catch (Exception e) {
 108             handleException();
 109         }
 110     }
 111
 112     public void toggleAdvancedMediaView() {
 113         if (getEntity().getRepresentations() != null
 114                 && (getEntity().getRepresentations().size() > 1 ||
 115                         (getEntity().getRepresentations().size() == 1
 116                         && getEntity().getRepresentations().iterator().next().getParts().size() > 1))) {
 117             MessagingUtils.informationDialog("Toggling not possible",
 118                     "Media has consists of multiple representations or representatio parts");
 119             // toggling is only possible if there are no more than one
 120             // MediaRepresentation resp. MediaRepresentationParts
 121             return;
 122         }
 123         isAdvancedMediaView = !isAdvancedMediaView;
 124         showAdvancedView();
 125         reflowParentScrolledForm(true);
 126     }
 127
 128     private void showAdvancedView() {
 129         if(isAdvancedMediaView){
 130             if(textUri!=null){
 131                 removeElementsAndControls(textUri);
 132             }
 133             if(element_image!=null){
 134                 element_image.dispose();
 135                 element_image = null;
 136             }
 137             section_mediaRepresentation = formFactory.createMediaRepresentationSection(getConversationHolder(), parentFormElement, style);
 138             section_mediaRepresentation.setLayoutData(LayoutConstants.FILL_HORIZONTALLY(2, 1));
 139             section_mediaRepresentation.setEntity(getEntity());
 140             //set buffered uri as text if uri had parsing problems in simple view
 141             if(uriBuffer!=null){
 142                 section_mediaRepresentation.getLayoutComposite().getChildren();
 143             }
 144         }
 145         else{
 146             if(section_mediaRepresentation!=null){
 147                 removeElementsAndControls(section_mediaRepresentation);
 148             }
 149             textUri = formFactory.createUriWithLabelElement(parentFormElement, "Media URI", null, style);
 150             URI uri = singleMediaRepresentationPart.getUri();
 151             textUri.setParsedText(uri);
 152             //set buffered uri as text if uri had parsing problems in advanced view
 153             if(uri==null && uriBuffer!=null){
 154                 textUri.setText(uriBuffer);
 155                 textUri.parseText();
 156             }
 157             textUri.getLayoutComposite().layout();
 158
 159             createImageElement(singleMediaRepresentationPart.getUri());
 160         }
 161     }
 162
 163     private void initIsAdvancedMediaView(){
 164         if(PreferencesUtil.getPreferenceStore().getBoolean(IPreferenceKeys.SHOW_ADVANCED_MEDIA_SECTION)){
 165             isAdvancedMediaView = true;
 166             return;
 167         }
 168         Set<MediaRepresentation> representations = getEntity().getRepresentations();
 169         if(representations.size()>1){
 170             isAdvancedMediaView = true;
 171             return;
 172         }
 173         if(representations.size()==1){
 174             List<MediaRepresentationPart> parts = representations.iterator().next().getParts();
 175             if(parts.size()>1){
 176                 isAdvancedMediaView =  true;
 177                 return;
 178             }
 179         }
 180         isAdvancedMediaView =  false;
 181     }
 182
 183     private void handleException() {
 184         if(element_image!=null){
 185             element_image.unloadImage();
 186             element_image.loadImage();
 187             element_image.dispose();
 188         }
 189         if(lblNoImage==null){
 190             lblNoImage = formFactory.createLabel(getLayoutComposite(), "No Image found");
 191             lblNoImage.setLayoutData(LayoutConstants.FILL_HORIZONTALLY(2, 1));
 192             lblNoImage.setAlignment(SWT.CENTER);
 193         }
 194     }
 195
 196     public boolean isAdvancedMediaView() {
 197         return isAdvancedMediaView;
 198     }
 199
 200     public void setUriBuffer(String uriBuffer) {
 201         this.uriBuffer = uriBuffer;
 202     }
 203
 204     public String getUriBuffer() {
 205         return uriBuffer;
 206     }
 207
 208 }