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.forms.AbstractFormSection;
  25 import eu.etaxonomy.taxeditor.ui.forms.CdmFormFactory;
  26 import eu.etaxonomy.taxeditor.ui.forms.CdmPropertyChangeEvent;
  27 import eu.etaxonomy.taxeditor.ui.forms.ICdmFormElement;
  28 import eu.etaxonomy.taxeditor.ui.forms.ImageElement;
  29 import eu.etaxonomy.taxeditor.ui.forms.KeyValueViewerElement;
  30 import eu.etaxonomy.taxeditor.ui.forms.LabelElement;
  31 import eu.etaxonomy.taxeditor.ui.forms.NumberWithLabelElement;
  32 import eu.etaxonomy.taxeditor.ui.section.supplemental.AbstractMediaRepresentationPartElement;
  33
  34 /**
  35  * <p>ImageFileElement class.</p>
  36  *
  37  * @author n.hoffmann
  38  * @created Mar 26, 2010
  39  * @version 1.0
  40  */
  41 public class ImageFileElement extends AbstractMediaRepresentationPartElement<ImageFile> {
  42
  43         private NumberWithLabelElement text_height;
  44         private NumberWithLabelElement text_width;
  45         private KeyValueViewerElement element_keyValue;
  46         private ImageElement element_image;
  47
  48         private LabelElement element_messages;
  49         private Runnable postRunnable = new Runnable(){
  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.forms.CdmFormFactory} object.
  61          * @param section a {@link eu.etaxonomy.taxeditor.ui.forms.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.createIntegerTextWithLabelElement(formElement, "Height", null, style);
  78                 text_height.setEnabled(false);
  79                 text_width = formFactory.createIntegerTextWithLabelElement(formElement, "Width", null, style);
  80                 text_width.setEnabled(false);
  81                 element_image = formFactory.createImageElement(formElement, null, style);
  82                 element_messages = formFactory.createLabel(formElement, "");
  83                 element_keyValue = formFactory.createKeyValueViewerElement(formElement, "Key", "Value", null);
  84         }
  85
  86         /** {@inheritDoc} */
  87         @Override
  88         public void setEntity(ImageFile entity) {
  89                 this.entity = entity;
  90                 if(entity.getSize() != null){
  91                         text_size.setText(FileUtils.byteCountToDisplaySize(entity.getSize()));
  92                 }
  93                 text_height.setInteger(entity.getHeight());
  94                 text_width.setInteger(entity.getWidth());
  95                 if(entity.getUri() != null){
  96                         text_uri.setText(entity.getUri().toString());
  97                 }
  98                 try {
  99                         showImage(entity.getUri());
 100                         element_messages.setText("");
 101                 } catch (Exception e) {
 102                         handleException(e);
 103                 }
 104         }
 105
 106         private void showImage(URI uri) throws IOException, HttpException{
 107                 element_image.initImageUri(uri);
 108
 109                 element_image.loadImage(postRunnable );
 110
 111
 112                 if(uri == null){
 113                         return;
 114                 }
 115
 116                 ImageInfo imageInfo = ImageInfo.NewInstanceWithMetaData(uri, 10000);
 117
 118                 text_size.setText(FileUtils.byteCountToDisplaySize(imageInfo.getLength()));
 119                 // KLUDGE this is not save for very large files, because of the int cast. But then, I don't think we will handle such large files in the near future
 120                 getEntity().setSize((int) imageInfo.getLength());
 121
 122                 text_height.setInteger(imageInfo.getHeight());
 123                 getEntity().setHeight(imageInfo.getHeight());
 124
 125                 text_width.setInteger(imageInfo.getWidth());
 126                 getEntity().setWidth(imageInfo.getWidth());
 127                 element_keyValue.setInput(imageInfo.getMetaData());
 128
 129                 element_messages.setText("");
 130         }
 131
 132         /*
 133          * (non-Javadoc)
 134          * @see eu.etaxonomy.taxeditor.section.AbstractEntityCollectionElement#handleEvent(java.lang.Object)
 135          */
 136         /** {@inheritDoc} */
 137         @Override
 138         public void handleEvent(Object eventSource) {
 139                 if(eventSource == text_uri){
 140                         try {
 141                                 String uriString = text_uri.getText();
 142                                 URI uri = StringUtils.isNotEmpty(uriString) ? new URI(uriString) : null;
 143                                 getEntity().setUri(uri);
 144
 145
 146                                 showImage(getEntity().getUri());
 147
 148                                 firePropertyChangeEvent(new CdmPropertyChangeEvent(this, null));
 149                         } catch (Exception e) {
 150                                 handleException(e);
 151                         }
 152                 }
 153
 154         }
 155
 156         private void handleException(Exception e) {
 157                 element_messages.setText(e.getMessage());
 158                 element_image.unloadImage(postRunnable);
 159                 text_size.setText("");
 160                 text_height.setInteger(0);
 161                 text_width.setInteger(0);
 162
 163                 element_image.loadImage(new Runnable(){
 164                         public void run() {
 165                                 StoreUtil.reflowDetailsViewer();
 166                                 StoreUtil.reflowSupplementalViewer();
 167                         }
 168                 });
 169         }
 170 }