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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;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.EnumSet;
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import java.util.Observable;
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import java.util.Observer;
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import org.eclipse.jface.util.PropertyChangeEvent;
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import org.eclipse.swt.SWT;
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import org.eclipse.swt.events.DisposeEvent;
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import org.eclipse.swt.events.DisposeListener;
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import org.eclipse.swt.widgets.Composite;
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import org.eclipse.swt.widgets.Display;
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import eu.etaxonomy.cdm.api.conversation.ConversationHolder;
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import eu.etaxonomy.cdm.api.conversation.IConversationEnabled;
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import eu.etaxonomy.cdm.common.CdmUtils;
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import eu.etaxonomy.cdm.model.common.CdmBase;
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import eu.etaxonomy.cdm.model.name.TaxonName;
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import eu.etaxonomy.cdm.model.taxon.TaxonBase;
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import eu.etaxonomy.cdm.persistence.hibernate.CdmDataChangeMap;
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import eu.etaxonomy.cdm.persistence.hibernate.permission.CRUD;
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import eu.etaxonomy.taxeditor.model.MessagingUtils;
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import eu.etaxonomy.taxeditor.store.CdmStore;
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import eu.etaxonomy.taxeditor.store.LoginManager;
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import eu.etaxonomy.taxeditor.store.StoreUtil;
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import eu.etaxonomy.taxeditor.ui.element.AbstractCdmFormElement;
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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.IEnableableFormElement;
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import eu.etaxonomy.taxeditor.ui.element.LabelElement;
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import eu.etaxonomy.taxeditor.ui.element.LayoutConstants;
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/**
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*
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* @author n.hoffmann
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* @created Feb 26, 2010
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*/
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public abstract class AbstractCdmDetailElement<T> extends AbstractCdmFormElement implements ICdmDetailElement<T>, Observer{
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private T entity;
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private boolean irrelevant;
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private boolean enabled = true;
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private LabelElement warnForReferencedObjects;
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private EnumSet<CRUD> requiredCrud = null;
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public AbstractCdmDetailElement(CdmFormFactory formFactory,
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ICdmFormElement formElement) {
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super(formFactory, formElement);
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// register as property change listener
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formFactory.addPropertyChangeListener(this);
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CdmStore.getLoginManager().addObserver(this);
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getLayoutComposite().getParent().addDisposeListener(new DisposeListener() {
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@Override
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public void widgetDisposed(DisposeEvent e) {
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CdmStore.getLoginManager().deleteObserver(AbstractCdmDetailElement.this);
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}
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});
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}
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/**
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* Sets the entity and updates controls
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*
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* @param entity
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* a T object.
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*/
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@Override
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public void setEntity(T entity) {
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this.entity = entity;
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// the id is always 0 if the entity was not yet saved, so it is new in this case
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if(getEntity() == null || StoreUtil.getCdmEntity(getEntity()).getId() == 0) {
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// new entity, not yet saved
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requiredCrud = EnumSet.of(CRUD.CREATE);
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} else {
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requiredCrud = EnumSet.of(CRUD.UPDATE);
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}
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updateContent();
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}
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@Override
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public T getEntity() {
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return entity;
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}
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/**
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* Updates all widgets to display the latest data
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*/
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protected void updateContent() {
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removeElements();
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createControls(this, entity, SWT.NONE);
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updateControlStates();
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}
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@Override
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public void setSelected(boolean selected) {
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Composite section = getLayoutComposite().getParent();
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section.setBackground(selected ? SELECTED : getPersistentBackground());
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}
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/**
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* Sets all field to the given enablement state except the objects in
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* collection except
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*
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* @see eu.etaxonomy.taxeditor.ui.element.IEnableableFormElement#setEnabled(boolean)
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* @param enabled
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* a boolean.
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* @param except
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* a {@link java.util.Collection} object.
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*/
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public void setEnabled(boolean enabled, Collection<Object> except) {
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this.enabled = enabled;
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for (ICdmFormElement element : getElements()) {
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if (element instanceof IEnableableFormElement) {
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IEnableableFormElement enableableElement = (IEnableableFormElement) element;
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if (except != null && except.contains(enableableElement)) {
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// enableableElement.setEnabled(enabled);
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} else {
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enableableElement.setEnabled(enabled);
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}
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}
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}
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}
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@Override
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public boolean isEnabled() {
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return enabled;
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}
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/**
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* <p>
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* Setter for the field <code>irrelevant</code>.
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* </p>
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*
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* @param irrelevant
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* a boolean.
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* @param except
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* a {@link java.util.Collection} object.
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*/
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public void setIrrelevant(boolean irrelevant, Collection<Object> except) {
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// logger.warn("Setting " + this.getClass().getSimpleName() +
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// " to irrelevant state: " + irrelevant);
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for (ICdmFormElement element : getElements()) {
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if (element instanceof IEnableableFormElement) {
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IEnableableFormElement relevantElement = (IEnableableFormElement) element;
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if (except != null && except.contains(relevantElement)) {
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// do nothing
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// logger.warn("not setting elements irrelevance: " +
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// relevantElement.getClass().getSimpleName() + " in :" +
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// this.getClass().getSimpleName());
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} else {
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relevantElement.setIrrelevant(irrelevant);
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}
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}
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}
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}
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/** {@inheritDoc} */
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@Override
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public void setEnabled(boolean enabled) {
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setEnabled(enabled, null);
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}
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/** {@inheritDoc} */
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@Override
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public void setIrrelevant(boolean irrelevant) {
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this.irrelevant = irrelevant;
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setIrrelevant(irrelevant, null);
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}
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/**
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* Create all content elements
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*
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* @param formElement
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* a {@link eu.etaxonomy.taxeditor.ui.element.ICdmFormElement}
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* object.
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* @param entity
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* a T object.
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* @param style
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* a int.
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*/
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protected abstract void createControls(ICdmFormElement formElement,
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T entity, int style);
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/** {@inheritDoc} */
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@Override
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public void propertyChange(PropertyChangeEvent event) {
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if (event == null) {
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return;
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}
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handleTitleCacheRelevantChange(event);
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Object eventSource = event.getSource();
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if (eventSource instanceof ICdmFormElement) {
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ICdmFormElement eventElement = (ICdmFormElement) eventSource;
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ICdmFormElement eventElementContainer = eventElement
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.getParentElement();
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ICdmFormElement parent = this.getParentElement();
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if (eventElementContainer == this) {
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if (event instanceof CdmPropertyChangeEvent) {
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if (((CdmPropertyChangeEvent) event).hasException()) {
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handleException((CdmPropertyChangeEvent) event);
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return;
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}
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}
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// call specific handler implementation
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handleEvent(eventSource);
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// refire the event
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firePropertyChangeEvent(this, event);
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// update possible parents
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updateParentSection();
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}
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}
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}
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protected void handleTitleCacheRelevantChange(PropertyChangeEvent event) {
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boolean isRelevant = getEntity() instanceof TaxonName
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|| getEntity() instanceof TaxonBase;
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isRelevant &= this instanceof AbstractIdentifiableEntityDetailElement;
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if (isRelevant) {
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((AbstractIdentifiableEntityDetailElement) this)
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.updateToggleableCacheField();
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}
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}
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private void updateParentSection() {
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if (getParentElement() instanceof AbstractCdmDetailSection) {
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((AbstractCdmDetailSection) getParentElement()).updateTitle();
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}
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//NOTE: This slows down the rendering of the details view
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// StoreUtil.reflowParentScrolledForm(getLayoutComposite(), true);
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}
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/**
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* Gets called when the source of the event is a child widget of this
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* widget.
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*
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* @param eventSource
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* a {@link java.lang.Object} object.
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*/
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public abstract void handleEvent(Object eventSource);
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public void handleException(CdmPropertyChangeEvent event) {
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// override this in subclasses if you want to deal with the error
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MessagingUtils.error(event.getSource().getClass(), event.getException());
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}
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public boolean isIrrelevant() {
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return irrelevant;
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}
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@Override
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public ConversationHolder getConversationHolder() {
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if (getParentElement() instanceof IConversationEnabled) {
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return ((IConversationEnabled) getParentElement())
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.getConversationHolder();
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}
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throw new IllegalArgumentException(
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"Parent element should be IConversationEnabled");
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}
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/** {@inheritDoc} */
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@Override
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public void update(CdmDataChangeMap changeEvents) {
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}
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@Override
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public void update(Observable o, Object arg){
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if(o instanceof LoginManager){
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updateControlStates();
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}
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}
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protected void updateControlStates(){
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Collection<Object> except = new ArrayList<Object>();
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for(ICdmFormElement formElement:getElements()){
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if(formElement instanceof IEnableableFormElement && !((IEnableableFormElement) formElement).isEnabled()){
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except.add(formElement);
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}
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}
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setEnabled(getEntity() != null && CdmStore.currentAuthentiationHasPermission(StoreUtil.getCdmEntity(getEntity()), requiredCrud), except);
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}
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public LabelElement getWarnForReferencedObjects() {
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return warnForReferencedObjects;
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}
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public void setWarnForReferencedObjects(LabelElement warnForReferencedObjects) {
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this.warnForReferencedObjects = warnForReferencedObjects;
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}
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public void setWarnForReferencingObjects(ICdmFormElement formElement, int defaultReferencingObjects){
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if (getEntity() instanceof CdmBase){
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CdmBase cdmBase = (CdmBase) getEntity();
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if (cdmBase.getId() != 0){
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long referencingObjectsCount = CdmStore.getCommonService().getReferencingObjectsCount(cdmBase);
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if (referencingObjectsCount > defaultReferencingObjects){
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setWarnForReferencedObjects(formFactory.createLabel(formElement, CdmUtils.Nz("The "+ cdmBase.getUserFriendlyTypeName()+" is referenced by " + referencingObjectsCount+ " objects, if you change it, it is changed for all these objects")));
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getWarnForReferencedObjects().setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_RED));
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getWarnForReferencedObjects().setLayout(LayoutConstants.FILL(2, 3));
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getWarnForReferencedObjects().setForeground(Display.getCurrent().getSystemColor(SWT.COLOR_RED));
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formFactory.createLabel(formElement, "");
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}
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}
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}
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}
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public void setWarnForReferencingObjects(ICdmFormElement formElement){
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setWarnForReferencingObjects(formElement, 1);
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}
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public void setWarnForReferencingObjectsVisible(boolean isVisible){
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if (getWarnForReferencedObjects() != null){
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getWarnForReferencedObjects().setVisible(isVisible);
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}
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}
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}
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