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