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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.supplemental;
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import org.eclipse.swt.widgets.Label;
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import org.joda.time.DateTime;
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import eu.etaxonomy.cdm.common.CdmUtils;
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import eu.etaxonomy.cdm.model.common.User;
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import eu.etaxonomy.cdm.model.common.VersionableEntity;
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import eu.etaxonomy.taxeditor.preference.PreferencesUtil;
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import eu.etaxonomy.taxeditor.ui.forms.AbstractCdmFormElement;
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import eu.etaxonomy.taxeditor.ui.forms.CdmFormFactory;
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import eu.etaxonomy.taxeditor.ui.forms.ICdmFormElement;
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import eu.etaxonomy.taxeditor.ui.forms.IEntityElement;
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import eu.etaxonomy.taxeditor.ui.forms.TextWithLabelElement;
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/**
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 * <p>VersionElement class.</p>
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 *
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 * @author n.hoffmann
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 * @created Nov 5, 2009
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 * @version 1.0
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 */
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public class VersionElement extends AbstractCdmFormElement implements IEntityElement<VersionableEntity> {
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	private Label label_created;
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	private Label label_updated;
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	private TextWithLabelElement text_uuid;
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	private TextWithLabelElement text_objectId;
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	private VersionableEntity entity;
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	private boolean showDebug;
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	/**
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	 * <p>Constructor for VersionElement.</p>
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	 *
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	 * @param style a int.
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	 * @param toolkit a {@link eu.etaxonomy.taxeditor.ui.forms.CdmFormFactory} object.
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	 * @param parentElement a {@link eu.etaxonomy.taxeditor.ui.forms.ICdmFormElement} object.
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	 * @param entity a {@link eu.etaxonomy.cdm.model.common.VersionableEntity} object.
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	 */
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	public VersionElement(CdmFormFactory toolkit, ICdmFormElement parentElement, VersionableEntity entity, int style) {
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		super(toolkit, parentElement);
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		showDebug = PreferencesUtil.getPreferenceStore().getBoolean(PreferencesUtil.SHOW_DEBUG_INFORMATION);
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		label_created = toolkit.createLabel(getLayoutComposite(), null);
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		label_created.setLayoutData(CdmFormFactory.FILL_HORIZONTALLY());
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		label_updated = toolkit.createLabel(getLayoutComposite(), null);
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		label_updated.setLayoutData(CdmFormFactory.FILL_HORIZONTALLY());
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		if(showDebug){
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			text_uuid = toolkit.createTextWithLabelElement(parentElement, "UUID", null, style);
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			text_objectId = toolkit.createTextWithLabelElement(parentElement, "Object ID", null, style);
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		}
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	}
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	/**
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	 * <p>Setter for the field <code>entity</code>.</p>
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	 *
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	 * @param entity a {@link eu.etaxonomy.cdm.model.common.VersionableEntity} object.
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	 */
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	public void setEntity(VersionableEntity entity){
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		this.entity = entity;
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		String createdString = "Created "
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				+ dateFormat(entity.getCreated())
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				+ " by " + userFormat(entity.getCreatedBy());			
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		label_created.setText(createdString);
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		String updatedString = "Updated "
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				+ dateFormat(entity.getUpdated())
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				+ " by " + userFormat(entity.getUpdatedBy());
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		label_updated.setText(updatedString);
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		if(showDebug){
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			text_uuid.setText(entity.getUuid().toString());
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			text_objectId.setText(entity.getId()+"");
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		}
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	}
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	private String dateFormat(DateTime dateTime){
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		if(dateTime == null){
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			return "";
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		}
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		return CdmUtils.Nz(dateTime.toString(PreferencesUtil.getDateFormatPattern()));
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	}
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	private String userFormat(User user){
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		if(user == null){
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			return "";
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		}
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		// TODO agree on what to display username or real name or even more from shibboleth
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		return CdmUtils.Nz(user.getUsername());
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	}
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	/**
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	 * <p>Getter for the field <code>entity</code>.</p>
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	 *
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	 * @return a {@link eu.etaxonomy.cdm.model.common.VersionableEntity} object.
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	 */
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	public VersionableEntity getEntity() {
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		return entity;
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	}
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	/** {@inheritDoc} */
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	public void setSelected(boolean selected) {
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		// will not likely be selected
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	}
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}
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