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

   1 // $Id$
   2 /**
   3 * Copyright (C) 2007 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
  11 package eu.etaxonomy.taxeditor.ui.section.media;
  12
  13 import java.io.IOException;
  14 import java.net.URI;
  15
  16 import org.apache.commons.io.FileUtils;
  17 import org.apache.http.HttpException;
  18 import org.eclipse.swt.events.SelectionListener;
  19
  20 import eu.etaxonomy.cdm.common.media.ImageInfo;
  21 import eu.etaxonomy.cdm.model.media.ImageFile;
  22 import eu.etaxonomy.taxeditor.model.AbstractUtility;
  23 import eu.etaxonomy.taxeditor.ui.element.AbstractFormSection;
  24 import eu.etaxonomy.taxeditor.ui.element.CdmFormFactory;
  25 import eu.etaxonomy.taxeditor.ui.element.CdmPropertyChangeEvent;
  26 import eu.etaxonomy.taxeditor.ui.element.ICdmFormElement;
  27 import eu.etaxonomy.taxeditor.ui.element.ImageElement;
  28 import eu.etaxonomy.taxeditor.ui.element.KeyValueViewerElement;
  29 import eu.etaxonomy.taxeditor.ui.element.NumberWithLabelElement;
  30
  31 /**
  32  * @author n.hoffmann
  33  * @created Mar 26, 2010
  34  * @version 1.0
  35  */
  36 public class ImageFileElement extends MediaRepresentationPartElement<ImageFile> {
  37
  38         private NumberWithLabelElement text_height;
  39         private NumberWithLabelElement text_width;
  40         private KeyValueViewerElement element_keyValue;
  41         private ImageElement element_image;
  42
  43
  44         private final Runnable postRunnable = new Runnable(){
  45                 @Override
  46         public void run() {
  47                         AbstractUtility.reflowDetailsViewer();
  48                         AbstractUtility.reflowSupplementalViewer();
  49                 }
  50         };
  51
  52
  53         public ImageFileElement(CdmFormFactory cdmFormFactory,
  54                         AbstractFormSection section, ImageFile element,
  55                         SelectionListener removeListener, int style) {
  56                 super(cdmFormFactory, section, element, removeListener, style);
  57         }
  58
  59         /** {@inheritDoc} */
  60         @Override
  61         public void createControls(ICdmFormElement formElement, int style) {
  62                 super.createControls(formElement, style);
  63
  64                 text_height = formFactory.createNumberTextWithLabelElement(formElement, "Height", null, style);
  65                 text_height.setEnabled(false);
  66                 text_width = formFactory.createNumberTextWithLabelElement(formElement, "Width", null, style);
  67                 text_width.setEnabled(false);
  68                 element_image = formFactory.createImageElement(formElement, null, style);
  69                 element_keyValue = formFactory.createKeyValueViewerElement(formElement, "Key", "Value", null);
  70         }
  71
  72         /** {@inheritDoc} */
  73         @Override
  74         public void setEntity(ImageFile entity) {
  75                 super.setEntity(entity);
  76                 text_height.setNumber(entity.getHeight());
  77                 text_width.setNumber(entity.getWidth());
  78                 try {
  79                         loadImage(entity.getUri(), false);
  80                 } catch (Exception e) {
  81                         handleException(e);
  82                 }
  83         }
  84
  85         private void loadImage(URI uri, boolean updateDimensions) throws IOException, HttpException{
  86                 element_image.initImageUri(uri);
  87
  88                 element_image.loadImage(postRunnable );
  89
  90
  91                 if(uri == null){
  92                         return;
  93                 }
  94
  95                 ImageInfo imageInfo = ImageInfo.NewInstanceWithMetaData(uri, 10000);
  96
  97                 element_keyValue.setInput(imageInfo.getMetaData());
  98
  99                 if(updateDimensions){
 100                         text_size.setText(FileUtils.byteCountToDisplaySize(imageInfo.getLength()));
 101                         // KLUDGE this is not save for very large files, because of the int cast.
 102                         // But then, I don't think we will handle such large files in the near future
 103                         getEntity().setSize((int) imageInfo.getLength());
 104
 105                         text_height.setNumber(imageInfo.getHeight());
 106                         getEntity().setHeight(imageInfo.getHeight());
 107
 108                         text_width.setNumber(imageInfo.getWidth());
 109                         getEntity().setWidth(imageInfo.getWidth());
 110                 }
 111
 112
 113         }
 114
 115         /** {@inheritDoc} */
 116         @Override
 117         public void handleEvent(Object eventSource) {
 118                 if(eventSource == text_uri){
 119                         try {
 120                             URI uri = text_uri.parseText();
 121                                 getEntity().setUri(uri);
 122                                 if(uri==null){
 123                                     //buffer URI if parsing error occurred
 124                                     MediaDetailElement parentMediaDetailElement = getParentMediaDetailElement();
 125                                     if(parentMediaDetailElement!=null){
 126                                         parentMediaDetailElement.setUriBuffer(text_uri.getText());
 127                                     }
 128                                 }
 129
 130                                 loadImage(getEntity().getUri(), true);
 131
 132                                 firePropertyChangeEvent(new CdmPropertyChangeEvent(this, null));
 133                         } catch (Exception e) {
 134                                 handleException(e);
 135                         } finally {
 136                                 firePropertyChangeEvent(this);
 137                         }
 138                 }
 139         }
 140
 141         protected void handleException(Exception e) {
 142                 element_image.unloadImage(postRunnable);
 143                 text_height.setNumber(0);
 144                 text_width.setNumber(0);
 145
 146                 element_image.loadImage(new Runnable(){
 147                         @Override
 148             public void run() {
 149                                 AbstractUtility.reflowDetailsViewer();
 150                                 AbstractUtility.reflowSupplementalViewer();
 151                         }
 152                 });
 153         }
 154 }