core/org.eclipse.stem.definitions/src/org/eclipse/stem/definitions/labels/provider/AreaLabelItemProvider.java

package org.eclipse.stem.definitions.labels.provider;

/*******************************************************************************
 * Copyright (c) 2006 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/

import java.util.Collection;
import java.util.List;

import org.eclipse.emf.common.notify.AdapterFactory;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.common.util.ResourceLocator;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.edit.provider.ComposeableAdapterFactory;
import org.eclipse.emf.edit.provider.ComposedAdapterFactory;
import org.eclipse.emf.edit.provider.IEditingDomainItemProvider;
import org.eclipse.emf.edit.provider.IItemLabelProvider;
import org.eclipse.emf.edit.provider.IItemPropertyDescriptor;
import org.eclipse.emf.edit.provider.IItemPropertySource;
import org.eclipse.emf.edit.provider.IStructuredItemContentProvider;
import org.eclipse.emf.edit.provider.ITreeItemContentProvider;
import org.eclipse.stem.core.graph.provider.StaticNodeLabelItemProvider;
import org.eclipse.stem.definitions.edges.provider.DefinitionsEditPlugin;
import org.eclipse.stem.data.geography.GeographicNames;
import org.eclipse.stem.definitions.labels.AreaLabel;
import org.eclipse.stem.definitions.labels.LabelsPackage;

/**
 * This is the item provider adapter for a
 * {@link org.eclipse.stem.definitions.labels.AreaLabel} object. <!--
 * begin-user-doc --> <!-- end-user-doc -->
 * 
 * @generated
 */
public class AreaLabelItemProvider extends StaticNodeLabelItemProvider
		implements IEditingDomainItemProvider, IStructuredItemContentProvider,
		ITreeItemContentProvider, IItemLabelProvider, IItemPropertySource {
	/**
	 * This constructs an instance from a factory and a notifier. <!--
	 * begin-user-doc -->
	 * 
	 * @param adapterFactory
	 * 
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public AreaLabelItemProvider(AdapterFactory adapterFactory) {
		super(adapterFactory);
	}

	/**
	 * This returns the property descriptors for the adapted class.
	 * <!-- begin-user-doc -->
	 * 
	 * @param object
	 * @return
	 * 
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public List<IItemPropertyDescriptor> getPropertyDescriptors(Object object) {
		if (itemPropertyDescriptors == null) {
			super.getPropertyDescriptors(object);

			addCurrentAreaValuePropertyDescriptor(object);
		}
		return itemPropertyDescriptors;
	}

	/**
	 * This adds a property descriptor for the Current Area Value feature.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	protected void addCurrentAreaValuePropertyDescriptor(Object object) {
		itemPropertyDescriptors.add
			(createItemPropertyDescriptor
				(((ComposeableAdapterFactory)adapterFactory).getRootAdapterFactory(),
				 getResourceLocator(),
				 getString("_UI_AreaLabel_currentAreaValue_feature"), //$NON-NLS-1$
				 getString("_UI_PropertyDescriptor_description", "_UI_AreaLabel_currentAreaValue_feature", "_UI_AreaLabel_type"), //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
				 LabelsPackage.Literals.AREA_LABEL__CURRENT_AREA_VALUE,
				 false,
				 false,
				 false,
				 null,
				 null,
				 null));
	}

	/**
	 * This returns the label text for the adapted class.
	 * <!-- begin-user-doc -->
	 * 
	 * @param object
	 * @return
	 * 
	 * <!-- end-user-doc -->
	 * @generated NOT
	 */
	@Override
	public String getText(Object object) {
		final ComposedAdapterFactory itemProviderFactory = new ComposedAdapterFactory(
				ComposedAdapterFactory.Descriptor.Registry.INSTANCE);
		final AreaLabel areaLabel = (AreaLabel) object;
		final IItemLabelProvider alvip = (AreaLabelValueItemProvider) itemProviderFactory
				.adapt(areaLabel.getCurrentAreaValue(),
						IItemLabelProvider.class);

		final String geoName = GeographicNames.getName(areaLabel.getURI());
		final StringBuilder sb = new StringBuilder(
				geoName.startsWith("!") ? getTextGen(object) : geoName);
		sb.append(" (");
		sb.append(alvip.getText(areaLabel.getCurrentAreaValue()));
		sb.append(")");
		return sb.toString();
	} // getText

	/**
	 * This returns the label text for the adapted class.
	 * <!-- begin-user-doc -->
	 * 
	 * @param object
	 * @return
	 * 
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public String getTextGen(Object object) {
		URI labelValue = ((AreaLabel)object).getURI();
		String label = labelValue == null ? null : labelValue.toString();
		return label == null || label.length() == 0 ?
			getString("_UI_AreaLabel_type") : //$NON-NLS-1$
			getString("_UI_AreaLabel_type") + " " + label; //$NON-NLS-1$ //$NON-NLS-2$
	}
	
	/**
	 * This handles model notifications by calling {@link #updateChildren} to update any cached
	 * children and by creating a viewer notification, which it passes to {@link #fireNotifyChanged}.
	 * <!-- begin-user-doc -->
	 * 
	 * @param notification
	 * 
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public void notifyChanged(Notification notification) {
		updateChildren(notification);
		super.notifyChanged(notification);
	}

	/**
	 * This adds {@link org.eclipse.emf.edit.command.CommandParameter}s describing the children
	 * that can be created under this object.
	 * <!-- begin-user-doc
	 * --> <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	protected void collectNewChildDescriptors(Collection<Object> newChildDescriptors, Object object) {
		super.collectNewChildDescriptors(newChildDescriptors, object);
	}

	/**
	 * Return the resource locator for this item provider's resources.
	 * <!-- begin-user-doc -->
	 * 
	 * @return
	 * 
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public ResourceLocator getResourceLocator() {
		return DefinitionsEditPlugin.INSTANCE;
	}

}