org.eclipse.emf.emfstore.server.model.edit/src/org/eclipse/emf/emfstore/server/model/versioning/operations/provider/AttributeOperationItemProvider.java

/*******************************************************************************
 * Copyright 2011 Chair for Applied Software Engineering,
 * Technische Universitaet Muenchen.
 * All rights reserved. This program and the accompanying materials
 * are made available under the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 ******************************************************************************/
package org.eclipse.emf.emfstore.server.model.versioning.operations.provider;

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.edit.provider.ComposeableAdapterFactory;
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.emf.edit.provider.ItemPropertyDescriptor;
import org.eclipse.emf.edit.provider.ViewerNotification;
import org.eclipse.emf.emfstore.server.model.versioning.operations.AttributeOperation;
import org.eclipse.emf.emfstore.server.model.versioning.operations.OperationsPackage;

/**
 * This is the item provider adapter for a
 * {@link org.eclipse.emf.emfstore.server.model.versioning.operations.AttributeOperation}
 * object. <!-- begin-user-doc --> <!-- end-user-doc -->
 * 
 * @generated
 */
public class AttributeOperationItemProvider extends
		FeatureOperationItemProvider implements IEditingDomainItemProvider,
		IStructuredItemContentProvider, ITreeItemContentProvider,
		IItemLabelProvider, IItemPropertySource {
	/**
	 * This constructs an instance from a factory and a notifier. <!--
	 * begin-user-doc --> <!-- end-user-doc -->
	 * 
	 * @generated
	 */
	public AttributeOperationItemProvider(AdapterFactory adapterFactory) {
		super(adapterFactory);
	}

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

			addOldValuePropertyDescriptor(object);
			addNewValuePropertyDescriptor(object);
		}
		return itemPropertyDescriptors;
	}

	/**
	 * This adds a property descriptor for the Old Value feature. <!--
	 * begin-user-doc --> <!-- end-user-doc -->
	 * 
	 * @generated
	 */
	protected void addOldValuePropertyDescriptor(Object object) {
		itemPropertyDescriptors.add(createItemPropertyDescriptor(
				((ComposeableAdapterFactory) adapterFactory)
						.getRootAdapterFactory(),
				getResourceLocator(),
				getString("_UI_AttributeOperation_oldValue_feature"),
				getString("_UI_PropertyDescriptor_description",
						"_UI_AttributeOperation_oldValue_feature",
						"_UI_AttributeOperation_type"),
				OperationsPackage.Literals.ATTRIBUTE_OPERATION__OLD_VALUE,
				true, false, false, ItemPropertyDescriptor.GENERIC_VALUE_IMAGE,
				null, null));
	}

	/**
	 * This adds a property descriptor for the New Value feature. <!--
	 * begin-user-doc --> <!-- end-user-doc -->
	 * 
	 * @generated
	 */
	protected void addNewValuePropertyDescriptor(Object object) {
		itemPropertyDescriptors.add(createItemPropertyDescriptor(
				((ComposeableAdapterFactory) adapterFactory)
						.getRootAdapterFactory(),
				getResourceLocator(),
				getString("_UI_AttributeOperation_newValue_feature"),
				getString("_UI_PropertyDescriptor_description",
						"_UI_AttributeOperation_newValue_feature",
						"_UI_AttributeOperation_type"),
				OperationsPackage.Literals.ATTRIBUTE_OPERATION__NEW_VALUE,
				true, false, false, ItemPropertyDescriptor.GENERIC_VALUE_IMAGE,
				null, null));
	}

	// begin of custom code
	/**
	 * @param object
	 *            the object
	 * @return This returns the image.
	 * @generated NOT
	 */
	@Override
	public Object getImage(Object object) {
		return overlayImage(
				object,
				getResourceLocator().getImage(
						"full/obj16/AttributeOperation.png"));
	}

	// end of custom code

	/**
	 * {@inheritDoc} This returns the label text for the adapted class. <!--
	 * begin-user-doc --> <!-- end-user-doc -->
	 * 
	 * @generated NOT
	 */
	@Override
	public String getText(Object object) {
		if (object instanceof AttributeOperation) {
			AttributeOperation op = (AttributeOperation) object;

			String oldValue;
			String newValue;
			if (op.getFeatureName().equals("description")) {
				oldValue = (op.getOldValue() == null) ? null : ((String) op
						.getOldValue());
				newValue = (op.getNewValue() == null) ? null : ((String) op
						.getNewValue());
			} else {
				oldValue = (op.getOldValue() == null) ? null : op.getOldValue()
						.toString();
				newValue = (op.getNewValue() == null) ? null : op.getNewValue()
						.toString();
			}
			String elemNameAndClass = getModelElementClassAndName(op
					.getModelElementId());
			if (oldValue == null && newValue == null) {
				return "Unset " + op.getFeatureName() + " in "
						+ elemNameAndClass;
			} else if (oldValue == null && newValue != null) {
				return "Set " + op.getFeatureName() + " in " + elemNameAndClass
						+ " to \"" + trim(newValue) + "\"";
			} else if (oldValue != null && newValue == null) {
				return "Unset " + op.getFeatureName() + " in "
						+ elemNameAndClass + " from previous value \""
						+ trim(oldValue) + "\"";
			} else {
				return "Set " + op.getFeatureName() + " in " + elemNameAndClass
						+ " from \"" + trim(oldValue) + "\" to \""
						+ trim(newValue) + "\"";
			}
		}
		return super.getText(object);
	}

	/**
	 * 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 --> <!--
	 * end-user-doc -->
	 * 
	 * @generated
	 */
	@Override
	public void notifyChanged(Notification notification) {
		updateChildren(notification);

		switch (notification.getFeatureID(AttributeOperation.class)) {
		case OperationsPackage.ATTRIBUTE_OPERATION__OLD_VALUE:
		case OperationsPackage.ATTRIBUTE_OPERATION__NEW_VALUE:
			fireNotifyChanged(new ViewerNotification(notification,
					notification.getNotifier(), false, true));
			return;
		}
		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);
	}

}