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.commons.lang.StringUtils;
  18 import org.apache.http.HttpException;
  19 import org.eclipse.swt.events.SelectionListener;
  20
  21 import eu.etaxonomy.cdm.common.media.ImageInfo;
  22 import eu.etaxonomy.cdm.model.media.ImageFile;
  23 import eu.etaxonomy.taxeditor.model.AbstractUtility;
  24 import eu.etaxonomy.taxeditor.store.StoreUtil;
  25 import eu.etaxonomy.taxeditor.ui.element.AbstractFormSection;
  26 import eu.etaxonomy.taxeditor.ui.element.CdmFormFactory;
  27 import eu.etaxonomy.taxeditor.ui.element.CdmPropertyChangeEvent;
  28 import eu.etaxonomy.taxeditor.ui.element.ICdmFormElement;
  29 import eu.etaxonomy.taxeditor.ui.element.ImageElement;
  30 import eu.etaxonomy.taxeditor.ui.element.KeyValueViewerElement;
  31 import eu.etaxonomy.taxeditor.ui.element.NumberWithLabelElement;
  32
  33 /**
  34  * <p>ImageFileElement class.</p>
  35  *
  36  * @author n.hoffmann
  37  * @created Mar 26, 2010
  38  * @version 1.0
  39  */
  40 public class ImageFileElement extends MediaRepresentationPartElement<ImageFile> {
  41
  42         private NumberWithLabelElement text_height;
  43         private NumberWithLabelElement text_width;
  44         private KeyValueViewerElement element_keyValue;
  45         private ImageElement element_image;
  46
  47
  48         private final Runnable postRunnable = new Runnable(){
  49                 @Override
  50         public void run() {
  51                         StoreUtil.reflowDetailsViewer();
  52                         StoreUtil.reflowSupplementalViewer();
  53                 }
  54         };
  55
  56
  57         /**
  58          * <p>Constructor for ImageFileElement.</p>
  59          *
  60          * @param cdmFormFactory a {@link eu.etaxonomy.taxeditor.ui.element.CdmFormFactory} object.
  61          * @param section a {@link eu.etaxonomy.taxeditor.ui.element.AbstractFormSection} object.
  62          * @param element a {@link eu.etaxonomy.cdm.model.media.ImageFile} object.
  63          * @param removeListener a {@link org.eclipse.swt.events.SelectionListener} object.
  64          * @param style a int.
  65          */
  66         public ImageFileElement(CdmFormFactory cdmFormFactory,
  67                         AbstractFormSection section, ImageFile element,
  68                         SelectionListener removeListener, int style) {
  69                 super(cdmFormFactory, section, element, removeListener, style);
  70         }
  71
  72         /** {@inheritDoc} */
  73         @Override
  74         public void createControls(ICdmFormElement formElement, int style) {
  75                 super.createControls(formElement, style);
  76
  77                 text_height = formFactory.createNumberTextWithLabelElement(formElement, "Height", null, style);
  78                 text_height.setEnabled(false);
  79                 text_width = formFactory.createNumberTextWithLabelElement(formElement, "Width", null, style);
  80                 text_width.setEnabled(false);
  81                 element_image = formFactory.createImageElement(formElement, null, style);
  82                 element_keyValue = formFactory.createKeyValueViewerElement(formElement, "Key", "Value", null);
  83         }
  84
  85         /** {@inheritDoc} */
  86         @Override
  87         public void setEntity(ImageFile entity) {
  88                 super.setEntity(entity);
  89                 text_height.setNumber(entity.getHeight());
  90                 text_width.setNumber(entity.getWidth());
  91                 try {
  92                         loadImage(entity.getUri(), false);
  93                 } catch (Exception e) {
  94                         handleException(e);
  95                 }
  96         }
  97
  98         private void loadImage(URI uri, boolean updateDimensions) throws IOException, HttpException{
  99                 element_image.initImageUri(uri);
 100
 101                 element_image.loadImage(postRunnable );
 102
 103
 104                 if(uri == null){
 105                         return;
 106                 }
 107
 108                 ImageInfo imageInfo = ImageInfo.NewInstanceWithMetaData(uri, 10000);
 109
 110                 element_keyValue.setInput(imageInfo.getMetaData());
 111
 112                 if(updateDimensions){
 113                         text_size.setText(FileUtils.byteCountToDisplaySize(imageInfo.getLength()));
 114                         // KLUDGE this is not save for very large files, because of the int cast.
 115                         // But then, I don't think we will handle such large files in the near future
 116                         getEntity().setSize((int) imageInfo.getLength());
 117
 118                         text_height.setNumber(imageInfo.getHeight());
 119                         getEntity().setHeight(imageInfo.getHeight());
 120
 121                         text_width.setNumber(imageInfo.getWidth());
 122                         getEntity().setWidth(imageInfo.getWidth());
 123                 }
 124
 125
 126         }
 127
 128         /*
 129          * (non-Javadoc)
 130          * @see eu.etaxonomy.taxeditor.section.AbstractEntityCollectionElement#handleEvent(java.lang.Object)
 131          */
 132         /** {@inheritDoc} */
 133         @Override
 134         public void handleEvent(Object eventSource) {
 135                 if(eventSource == text_uri){
 136                         try {
 137                                 String uriString = text_uri.getText();
 138                                 URI uri = StringUtils.isNotEmpty(uriString) ? new URI(uriString) : null;
 139                                 getEntity().setUri(uri);
 140
 141
 142                                 loadImage(getEntity().getUri(), true);
 143
 144                                 firePropertyChangeEvent(new CdmPropertyChangeEvent(this, null));
 145                         } catch (Exception e) {
 146                                 handleException(e);
 147                         } finally {
 148                                 firePropertyChangeEvent(this);
 149                         }
 150                 }
 151         }
 152
 153         protected void handleException(Exception e) {
 154                 element_image.unloadImage(postRunnable);
 155                 text_height.setNumber(0);
 156                 text_width.setNumber(0);
 157
 158                 element_image.loadImage(new Runnable(){
 159                         @Override
 160             public void run() {
 161                                 AbstractUtility.reflowDetailsViewer();
 162                                 AbstractUtility.reflowSupplementalViewer();
 163                         }
 164                 });
 165         }
 166 }