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.io.IOException;
  13 import java.net.URI;
  14 import java.util.List;
  15 import java.util.Set;
  16
  17 import org.apache.http.HttpException;
  18
  19 import eu.etaxonomy.cdm.model.media.Media;
  20 import eu.etaxonomy.cdm.model.media.MediaRepresentation;
  21 import eu.etaxonomy.cdm.model.media.MediaRepresentationPart;
  22 import eu.etaxonomy.cdm.model.media.MediaUtils;
  23 import eu.etaxonomy.taxeditor.model.AbstractUtility;
  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
  55     private final Runnable postRunnable = new Runnable(){
  56         @Override
  57         public void run() {
  58             AbstractUtility.reflowDetailsViewer();
  59             AbstractUtility.reflowSupplementalViewer();
  60         }
  61     };
  62
  63     public MediaDetailElement(CdmFormFactory formFactory, ICdmFormElement formElement) {
  64         super(formFactory, formElement);
  65     }
  66
  67     @Override
  68     protected void createControls(ICdmFormElement formElement, Media entity, int style) {
  69         this.parentFormElement = formElement;
  70         this.style = style;
  71     }
  72
  73     @Override
  74     public void setEntity(Media entity) {
  75         super.setEntity(entity);
  76         if(singleMediaRepresentationPart==null){
  77             singleMediaRepresentationPart = MediaUtils.initFirstMediaRepresentationPart(entity, true);
  78         }
  79         initIsAdvancedMediaView();
  80         showAdvancedView();
  81     }
  82
  83     @Override
  84     public void handleEvent(Object eventSource){
  85         if(eventSource==textUri){
  86             textUri.setBackground(getPersistentBackground());
  87             URI uri = textUri.parseText();
  88             singleMediaRepresentationPart.setUri(uri);
  89             if(uri==null){
  90                 uriBuffer=textUri.getText();
  91             }
  92             try {
  93                 loadImage(singleMediaRepresentationPart.getUri(), true);
  94             } catch (Exception e) {
  95                 handleException(e);
  96             }
  97         }
  98     }
  99
 100     public void toggleAdvancedMediaView() {
 101         if (getEntity().getRepresentations() != null
 102                 && (getEntity().getRepresentations().size() > 1 ||
 103                         (getEntity().getRepresentations().size() == 1
 104                         && getEntity().getRepresentations().iterator().next().getParts().size() > 1))) {
 105             MessagingUtils.informationDialog("Toggling not possible",
 106                     "Media has consists of multiple representations or representatio parts");
 107             // toggling is only possible if there are no more than one
 108             // MediaRepresentation resp. MediaRepresentationParts
 109             return;
 110         }
 111         isAdvancedMediaView = !isAdvancedMediaView;
 112         showAdvancedView();
 113         reflowParentScrolledForm(true);
 114     }
 115
 116     private void showAdvancedView() {
 117         if(isAdvancedMediaView){
 118             if(textUri!=null){
 119                 removeElementsAndControls(textUri);
 120             }
 121             if(element_image!=null){
 122                 element_image.dispose();
 123                 element_image = null;
 124             }
 125             section_mediaRepresentation = formFactory.createMediaRepresentationSection(getConversationHolder(), parentFormElement, style);
 126             section_mediaRepresentation.setLayoutData(LayoutConstants.FILL_HORIZONTALLY(2, 1));
 127             section_mediaRepresentation.setEntity(getEntity());
 128             //set buffered uri as text if uri had parsing problems in simple view
 129             if(uriBuffer!=null){
 130                 section_mediaRepresentation.getLayoutComposite().getChildren();
 131             }
 132         }
 133         else{
 134             if(section_mediaRepresentation!=null){
 135                 removeElementsAndControls(section_mediaRepresentation);
 136             }
 137             textUri = formFactory.createUriWithLabelElement(parentFormElement, "Media URI", null, style);
 138             URI uri = singleMediaRepresentationPart.getUri();
 139             textUri.setParsedText(uri);
 140             //set buffered uri as text if uri had parsing problems in advanced view
 141             if(uri==null && uriBuffer!=null){
 142                 textUri.setText(uriBuffer);
 143                 textUri.parseText();
 144             }
 145             textUri.getLayoutComposite().layout();
 146
 147             element_image = formFactory.createImageElement(parentFormElement, null, style);
 148             try {
 149                 loadImage(singleMediaRepresentationPart.getUri(), false);
 150             } catch (Exception e) {
 151                 handleException(e);
 152             }
 153         }
 154     }
 155
 156     private void initIsAdvancedMediaView(){
 157         if(PreferencesUtil.getPreferenceStore().getBoolean(IPreferenceKeys.SHOW_ADVANCED_MEDIA_SECTION)){
 158             isAdvancedMediaView = true;
 159             return;
 160         }
 161         Set<MediaRepresentation> representations = getEntity().getRepresentations();
 162         if(representations.size()>1){
 163             isAdvancedMediaView = true;
 164             return;
 165         }
 166         if(representations.size()==1){
 167             List<MediaRepresentationPart> parts = representations.iterator().next().getParts();
 168             if(parts.size()>1){
 169                 isAdvancedMediaView =  true;
 170                 return;
 171             }
 172         }
 173         isAdvancedMediaView =  false;
 174     }
 175
 176     private void loadImage(URI uri, boolean updateDimensions) throws IOException, HttpException{
 177         element_image.initImageUri(uri);
 178         element_image.loadImage(postRunnable);
 179         if(uri == null){
 180             return;
 181         }
 182     }
 183
 184     private void handleException(Exception e) {
 185         element_image.unloadImage(postRunnable);
 186         element_image.loadImage(new Runnable(){
 187             @Override
 188             public void run() {
 189                 AbstractUtility.reflowDetailsViewer();
 190                 AbstractUtility.reflowSupplementalViewer();
 191             }
 192         });
 193     }
 194     public boolean isAdvancedMediaView() {
 195         return isAdvancedMediaView;
 196     }
 197
 198     public void setUriBuffer(String uriBuffer) {
 199         this.uriBuffer = uriBuffer;
 200     }
 201
 202     public String getUriBuffer() {
 203         return uriBuffer;
 204     }
 205
 206 }