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.ImageFile;
  21 import eu.etaxonomy.cdm.model.media.Media;
  22 import eu.etaxonomy.cdm.model.media.MediaRepresentation;
  23 import eu.etaxonomy.cdm.model.media.MediaRepresentationPart;
  24 import eu.etaxonomy.cdm.model.media.MediaUtils;
  25 import eu.etaxonomy.taxeditor.model.MessagingUtils;
  26 import eu.etaxonomy.taxeditor.preference.IPreferenceKeys;
  27 import eu.etaxonomy.taxeditor.preference.PreferencesUtil;
  28 import eu.etaxonomy.taxeditor.ui.element.CdmFormFactory;
  29 import eu.etaxonomy.taxeditor.ui.element.ICdmFormElement;
  30 import eu.etaxonomy.taxeditor.ui.element.ImageElement;
  31 import eu.etaxonomy.taxeditor.ui.element.LayoutConstants;
  32 import eu.etaxonomy.taxeditor.ui.element.UriWithLabelElement;
  33 import eu.etaxonomy.taxeditor.ui.section.AbstractCdmDetailElement;
  34
  35 /**
  36  * @author pplitzner
  37  * @date 25.08.2014
  38  *
  39  */
  40 public class MediaDetailElement extends AbstractCdmDetailElement<Media>{
  41
  42     private UriWithLabelElement textUri;
  43     private MediaRepresentationSection section_mediaRepresentation;
  44
  45     private boolean isAdvancedMediaView;
  46     private MediaRepresentationPart singleMediaRepresentationPart;
  47     private ICdmFormElement parentFormElement;
  48     private int style;
  49
  50     /**
  51      * Used to store the URI even if it is invalid and thus cannot be stored in CDM
  52      */
  53     private String uriBuffer;
  54     private ImageElement element_image;
  55     private Label lblNoImage;
  56
  57     public MediaDetailElement(CdmFormFactory formFactory, ICdmFormElement formElement) {
  58         super(formFactory, formElement);
  59     }
  60
  61     @Override
  62     protected void createControls(ICdmFormElement formElement, Media entity, int style) {
  63         this.parentFormElement = formElement;
  64         this.style = style;
  65     }
  66
  67     @Override
  68     public void setEntity(Media entity) {
  69         super.setEntity(entity);
  70         if(singleMediaRepresentationPart==null){
  71             singleMediaRepresentationPart = MediaUtils.initFirstMediaRepresentationPart(entity, true);
  72         }
  73         initIsAdvancedMediaView();
  74         showAdvancedView();
  75     }
  76
  77     @Override
  78     public void handleEvent(Object eventSource){
  79         if(eventSource==textUri){
  80             textUri.setBackground(getPersistentBackground());
  81             URI uri = textUri.parseText();
  82             singleMediaRepresentationPart.setUri(uri);
  83             if(uri==null){
  84                 uriBuffer=textUri.getText();
  85             }
  86             else{
  87                 createImageElement(uri);
  88             }
  89         }
  90     }
  91
  92     private void createImageElement(URI uri) {
  93         ImageInfo imageInfo;
  94         try {
  95             if(uri == null){
  96                 return;
  97             }
  98             imageInfo = ImageInfo.NewInstance(uri, 10000);
  99             singleMediaRepresentationPart.setSize((int) imageInfo.getLength());
 100             if(singleMediaRepresentationPart instanceof ImageFile){
 101                 ((ImageFile) singleMediaRepresentationPart).setHeight(imageInfo.getHeight());
 102                 ((ImageFile) singleMediaRepresentationPart).setWidth(imageInfo.getWidth());
 103             }
 104             singleMediaRepresentationPart.getMediaRepresentation().setMimeType(imageInfo.getMimeType());
 105             singleMediaRepresentationPart.getMediaRepresentation().setSuffix(imageInfo.getSuffix());
 106             element_image = formFactory.createImageElement(parentFormElement, uri, style);
 107             element_image.initImageUri(uri);
 108             element_image.loadImage();
 109             if(lblNoImage!=null){
 110                 lblNoImage.dispose();
 111             }
 112             lblNoImage = null;
 113         } catch (Exception e) {
 114             handleException();
 115         }
 116     }
 117
 118     public void toggleAdvancedMediaView() {
 119         if (getEntity().getRepresentations() != null
 120                 && (getEntity().getRepresentations().size() > 1 ||
 121                         (getEntity().getRepresentations().size() == 1
 122                         && getEntity().getRepresentations().iterator().next().getParts().size() > 1))) {
 123             MessagingUtils.informationDialog("Toggling not possible",
 124                     "Media has consists of multiple representations or representatio parts");
 125             // toggling is only possible if there are no more than one
 126             // MediaRepresentation resp. MediaRepresentationParts
 127             return;
 128         }
 129         isAdvancedMediaView = !isAdvancedMediaView;
 130         showAdvancedView();
 131         reflowParentScrolledForm(true);
 132     }
 133
 134     private void showAdvancedView() {
 135         if(isAdvancedMediaView){
 136             if(textUri!=null){
 137                 removeElementsAndControls(textUri);
 138             }
 139             if(element_image!=null){
 140                 element_image.dispose();
 141                 element_image = null;
 142             }
 143             section_mediaRepresentation = formFactory.createMediaRepresentationSection(getConversationHolder(), parentFormElement, style);
 144             section_mediaRepresentation.setLayoutData(LayoutConstants.FILL_HORIZONTALLY(2, 1));
 145             section_mediaRepresentation.setEntity(getEntity());
 146             //set buffered uri as text if uri had parsing problems in simple view
 147             if(uriBuffer!=null){
 148                 section_mediaRepresentation.getLayoutComposite().getChildren();
 149             }
 150         }
 151         else{
 152             if(section_mediaRepresentation!=null){
 153                 removeElementsAndControls(section_mediaRepresentation);
 154             }
 155             textUri = formFactory.createUriWithLabelElement(parentFormElement, "Media URI", null, style);
 156             URI uri = singleMediaRepresentationPart.getUri();
 157             textUri.setParsedText(uri);
 158             //set buffered uri as text if uri had parsing problems in advanced view
 159             if(uri==null && uriBuffer!=null){
 160                 textUri.setText(uriBuffer);
 161                 textUri.parseText();
 162             }
 163             textUri.getLayoutComposite().layout();
 164
 165             createImageElement(singleMediaRepresentationPart.getUri());
 166         }
 167     }
 168
 169     private void initIsAdvancedMediaView(){
 170         if(PreferencesUtil.getPreferenceStore().getBoolean(IPreferenceKeys.SHOW_ADVANCED_MEDIA_SECTION)){
 171             isAdvancedMediaView = true;
 172             return;
 173         }
 174         Set<MediaRepresentation> representations = getEntity().getRepresentations();
 175         if(representations.size()>1){
 176             isAdvancedMediaView = true;
 177             return;
 178         }
 179         if(representations.size()==1){
 180             List<MediaRepresentationPart> parts = representations.iterator().next().getParts();
 181             if(parts.size()>1){
 182                 isAdvancedMediaView =  true;
 183                 return;
 184             }
 185         }
 186         isAdvancedMediaView =  false;
 187     }
 188
 189     private void handleException() {
 190         if(element_image!=null){
 191             element_image.unloadImage();
 192             element_image.loadImage();
 193             element_image.dispose();
 194         }
 195         if(lblNoImage==null){
 196             lblNoImage = formFactory.createLabel(getLayoutComposite(), "No Image found");
 197             lblNoImage.setLayoutData(LayoutConstants.FILL_HORIZONTALLY(2, 1));
 198             lblNoImage.setAlignment(SWT.CENTER);
 199         }
 200     }
 201
 202     public boolean isAdvancedMediaView() {
 203         return isAdvancedMediaView;
 204     }
 205
 206     public void setUriBuffer(String uriBuffer) {
 207         this.uriBuffer = uriBuffer;
 208     }
 209
 210     public String getUriBuffer() {
 211         return uriBuffer;
 212     }
 213
 214 }