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// $Id$
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/**
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* Copyright (C) 2007 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.taxeditor.ui.section.media;
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import java.io.IOException;
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import java.net.URI;
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import org.apache.commons.io.FileUtils;
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import org.apache.http.HttpException;
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import org.eclipse.swt.events.SelectionListener;
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import eu.etaxonomy.cdm.common.media.ImageInfo;
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import eu.etaxonomy.cdm.model.media.ImageFile;
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import eu.etaxonomy.taxeditor.ui.element.AbstractFormSection;
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import eu.etaxonomy.taxeditor.ui.element.CdmFormFactory;
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import eu.etaxonomy.taxeditor.ui.element.CdmPropertyChangeEvent;
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import eu.etaxonomy.taxeditor.ui.element.ICdmFormElement;
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import eu.etaxonomy.taxeditor.ui.element.ImageElement;
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import eu.etaxonomy.taxeditor.ui.element.KeyValueViewerElement;
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import eu.etaxonomy.taxeditor.ui.element.NumberWithLabelElement;
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/**
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* @author n.hoffmann
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* @created Mar 26, 2010
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* @version 1.0
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*/
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public class ImageFileElement extends MediaRepresentationPartElement<ImageFile> {
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private NumberWithLabelElement text_height;
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private NumberWithLabelElement text_width;
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private KeyValueViewerElement element_keyValue;
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private ImageElement element_image;
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public ImageFileElement(CdmFormFactory cdmFormFactory,
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AbstractFormSection section, ImageFile element,
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SelectionListener removeListener, int style) {
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super(cdmFormFactory, section, element, removeListener, style);
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}
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/** {@inheritDoc} */
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@Override
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public void createControls(ICdmFormElement formElement, int style) {
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super.createControls(formElement, style);
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text_height = formFactory.createNumberTextWithLabelElement(formElement, "Height", null, style);
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text_height.setEnabled(false);
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text_width = formFactory.createNumberTextWithLabelElement(formElement, "Width", null, style);
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text_width.setEnabled(false);
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element_image = formFactory.createImageElement(formElement, null, style);
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element_keyValue = formFactory.createKeyValueViewerElement(formElement, "Key", "Value", null);
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}
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/** {@inheritDoc} */
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@Override
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public void setEntity(ImageFile entity) {
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super.setEntity(entity);
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text_height.setNumber(entity.getHeight());
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text_width.setNumber(entity.getWidth());
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try {
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loadImage(entity.getUri(), false);
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} catch (Exception e) {
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handleException(e);
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}
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}
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private void loadImage(URI uri, boolean updateDimensions) throws IOException, HttpException{
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element_image.initImageUri(uri);
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element_image.loadImage();
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if(uri == null){
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return;
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}
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ImageInfo imageInfo = ImageInfo.NewInstanceWithMetaData(uri, 10000);
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element_keyValue.setInput(imageInfo.getMetaData());
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if(updateDimensions){
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text_size.setText(FileUtils.byteCountToDisplaySize(imageInfo.getLength()));
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// KLUDGE this is not save for very large files, because of the int cast.
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// But then, I don't think we will handle such large files in the near future
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getEntity().setSize((int) imageInfo.getLength());
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text_height.setNumber(imageInfo.getHeight());
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getEntity().setHeight(imageInfo.getHeight());
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text_width.setNumber(imageInfo.getWidth());
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getEntity().setWidth(imageInfo.getWidth());
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}
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}
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/** {@inheritDoc} */
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@Override
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public void handleEvent(Object eventSource) {
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if(eventSource == text_uri){
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try {
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URI uri = text_uri.parseText();
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getEntity().setUri(uri);
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if(uri==null){
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//buffer URI if parsing error occurred
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MediaDetailElement parentMediaDetailElement = getParentMediaDetailElement();
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if(parentMediaDetailElement!=null){
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parentMediaDetailElement.setUriBuffer(text_uri.getText());
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}
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}
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loadImage(getEntity().getUri(), true);
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firePropertyChangeEvent(new CdmPropertyChangeEvent(this, null));
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} catch (Exception e) {
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handleException(e);
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} finally {
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firePropertyChangeEvent(this);
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}
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}
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}
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protected void handleException(Exception e) {
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element_image.unloadImage();
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text_height.setNumber(0);
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text_width.setNumber(0);
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element_image.loadImage();
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}
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}
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