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 import org.eclipse.swt.SWT;
  19 import org.eclipse.swt.widgets.Label;
  20
  21 import eu.etaxonomy.cdm.common.media.ImageInfo;
  22 import eu.etaxonomy.cdm.model.media.Media;
  23 import eu.etaxonomy.cdm.model.media.MediaRepresentation;
  24 import eu.etaxonomy.cdm.model.media.MediaRepresentationPart;
  25 import eu.etaxonomy.cdm.model.media.MediaUtils;
  26 import eu.etaxonomy.taxeditor.model.MessagingUtils;
  27 import eu.etaxonomy.taxeditor.preference.IPreferenceKeys;
  28 import eu.etaxonomy.taxeditor.preference.PreferencesUtil;
  29 import eu.etaxonomy.taxeditor.ui.element.CdmFormFactory;
  30 import eu.etaxonomy.taxeditor.ui.element.ICdmFormElement;
  31 import eu.etaxonomy.taxeditor.ui.element.ImageElement;
  32 import eu.etaxonomy.taxeditor.ui.element.LayoutConstants;
  33 import eu.etaxonomy.taxeditor.ui.element.UriWithLabelElement;
  34 import eu.etaxonomy.taxeditor.ui.section.AbstractCdmDetailElement;
  35
  36 /**
  37  * @author pplitzner
  38  * @date 25.08.2014
  39  *
  40  */
  41 public class MediaDetailElement extends AbstractCdmDetailElement<Media>{
  42
  43     private UriWithLabelElement textUri;
  44     private MediaRepresentationSection section_mediaRepresentation;
  45
  46     private boolean isAdvancedMediaView;
  47     private MediaRepresentationPart singleMediaRepresentationPart;
  48     private ICdmFormElement parentFormElement;
  49     private int style;
  50
  51     /**
  52      * Used to store the URI even if it is invalid and thus cannot be stored in CDM
  53      */
  54     private String uriBuffer;
  55     private ImageElement element_image;
  56     private Label lblNoImage;
  57
  58     public MediaDetailElement(CdmFormFactory formFactory, ICdmFormElement formElement) {
  59         super(formFactory, formElement);
  60     }
  61
  62     @Override
  63     protected void createControls(ICdmFormElement formElement, Media entity, int style) {
  64         this.parentFormElement = formElement;
  65         this.style = style;
  66     }
  67
  68     @Override
  69     public void setEntity(Media entity) {
  70         super.setEntity(entity);
  71         if(singleMediaRepresentationPart==null){
  72             singleMediaRepresentationPart = MediaUtils.initFirstMediaRepresentationPart(entity, true);
  73         }
  74         initIsAdvancedMediaView();
  75         showAdvancedView();
  76     }
  77
  78     @Override
  79     public void handleEvent(Object eventSource){
  80         if(eventSource==textUri){
  81             textUri.setBackground(getPersistentBackground());
  82             URI uri = textUri.parseText();
  83             singleMediaRepresentationPart.setUri(uri);
  84             if(uri==null){
  85                 uriBuffer=textUri.getText();
  86             }
  87             else{
  88
  89                 ImageInfo imageInfo;
  90                 try {
  91                     imageInfo = ImageInfo.NewInstance(uri, 10000);
  92                     singleMediaRepresentationPart.getMediaRepresentation().setMimeType(imageInfo.getMimeType());
  93                     singleMediaRepresentationPart.getMediaRepresentation().setSuffix(imageInfo.getSuffix());
  94                     element_image = formFactory.createImageElement(parentFormElement, uri, style);
  95                     loadImage(singleMediaRepresentationPart.getUri());
  96                 } catch (Exception e) {
  97                     handleException();
  98                 }
  99             }
 100         }
 101     }
 102
 103     public void toggleAdvancedMediaView() {
 104         if (getEntity().getRepresentations() != null
 105                 && (getEntity().getRepresentations().size() > 1 ||
 106                         (getEntity().getRepresentations().size() == 1
 107                         && getEntity().getRepresentations().iterator().next().getParts().size() > 1))) {
 108             MessagingUtils.informationDialog("Toggling not possible",
 109                     "Media has consists of multiple representations or representatio parts");
 110             // toggling is only possible if there are no more than one
 111             // MediaRepresentation resp. MediaRepresentationParts
 112             return;
 113         }
 114         isAdvancedMediaView = !isAdvancedMediaView;
 115         showAdvancedView();
 116         reflowParentScrolledForm(true);
 117     }
 118
 119     private void showAdvancedView() {
 120         if(isAdvancedMediaView){
 121             if(textUri!=null){
 122                 removeElementsAndControls(textUri);
 123             }
 124             if(element_image!=null){
 125                 element_image.dispose();
 126                 element_image = null;
 127             }
 128             section_mediaRepresentation = formFactory.createMediaRepresentationSection(getConversationHolder(), parentFormElement, style);
 129             section_mediaRepresentation.setLayoutData(LayoutConstants.FILL_HORIZONTALLY(2, 1));
 130             section_mediaRepresentation.setEntity(getEntity());
 131             //set buffered uri as text if uri had parsing problems in simple view
 132             if(uriBuffer!=null){
 133                 section_mediaRepresentation.getLayoutComposite().getChildren();
 134             }
 135         }
 136         else{
 137             if(section_mediaRepresentation!=null){
 138                 removeElementsAndControls(section_mediaRepresentation);
 139             }
 140             textUri = formFactory.createUriWithLabelElement(parentFormElement, "Media URI", null, style);
 141             URI uri = singleMediaRepresentationPart.getUri();
 142             textUri.setParsedText(uri);
 143             //set buffered uri as text if uri had parsing problems in advanced view
 144             if(uri==null && uriBuffer!=null){
 145                 textUri.setText(uriBuffer);
 146                 textUri.parseText();
 147             }
 148             textUri.getLayoutComposite().layout();
 149
 150             element_image = formFactory.createImageElement(parentFormElement, null, style);
 151             try {
 152                 loadImage(singleMediaRepresentationPart.getUri());
 153             } catch (Exception e) {
 154                 handleException();
 155             }
 156         }
 157     }
 158
 159     private void initIsAdvancedMediaView(){
 160         if(PreferencesUtil.getPreferenceStore().getBoolean(IPreferenceKeys.SHOW_ADVANCED_MEDIA_SECTION)){
 161             isAdvancedMediaView = true;
 162             return;
 163         }
 164         Set<MediaRepresentation> representations = getEntity().getRepresentations();
 165         if(representations.size()>1){
 166             isAdvancedMediaView = true;
 167             return;
 168         }
 169         if(representations.size()==1){
 170             List<MediaRepresentationPart> parts = representations.iterator().next().getParts();
 171             if(parts.size()>1){
 172                 isAdvancedMediaView =  true;
 173                 return;
 174             }
 175         }
 176         isAdvancedMediaView =  false;
 177     }
 178
 179     private void loadImage(URI uri) throws IOException, HttpException{
 180         element_image.initImageUri(uri);
 181         element_image.loadImage();
 182         if(uri == null){
 183             return;
 184         }
 185         lblNoImage.dispose();
 186         lblNoImage = null;
 187     }
 188
 189     private void handleException() {
 190         element_image.unloadImage();
 191         element_image.loadImage();
 192         element_image.dispose();
 193         if(lblNoImage==null){
 194             lblNoImage = formFactory.createLabel(getLayoutComposite(), "No Image found");
 195             lblNoImage.setLayoutData(LayoutConstants.FILL_HORIZONTALLY(2, 1));
 196             lblNoImage.setAlignment(SWT.CENTER);
 197         }
 198     }
 199
 200     public boolean isAdvancedMediaView() {
 201         return isAdvancedMediaView;
 202     }
 203
 204     public void setUriBuffer(String uriBuffer) {
 205         this.uriBuffer = uriBuffer;
 206     }
 207
 208     public String getUriBuffer() {
 209         return uriBuffer;
 210     }
 211
 212 }