/*******************************************************************************
 * Copyright (c) 2009, 2018 Willink Transformations and others.
 * All rights reserved.   This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v2.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v20.html
 *
 * Contributors:
 *   IBM - Initial API and implementation
 *******************************************************************************/
package org.eclipse.ocl.expressions.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.common.util.ResourceLocator;

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.ItemProviderAdapter;
import org.eclipse.emf.edit.provider.ViewerNotification;

import org.eclipse.ocl.edit.OCLEditPlugin;

import org.eclipse.ocl.expressions.ExpressionsPackage;
import org.eclipse.ocl.expressions.OCLExpression;

import org.eclipse.ocl.utilities.UtilitiesPackage;

/**
 * This is the item provider adapter for a {@link org.eclipse.ocl.expressions.OCLExpression} object.
 * <!-- begin-user-doc -->
 * <!-- end-user-doc -->
 * @generated
 */
public class OCLExpressionItemProvider
		extends ItemProviderAdapter
		implements IEditingDomainItemProvider, IStructuredItemContentProvider,
		ITreeItemContentProvider, IItemLabelProvider, IItemPropertySource {

	/**
	 * This constructs an instance from a factory and a notifier.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public OCLExpressionItemProvider(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);

			addStartPositionPropertyDescriptor(object);
			addEndPositionPropertyDescriptor(object);
		}
		return itemPropertyDescriptors;
	}

	/**
	 * This adds a property descriptor for the Start Position feature.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	protected void addStartPositionPropertyDescriptor(Object object) {
		itemPropertyDescriptors.add(createItemPropertyDescriptor(
			((ComposeableAdapterFactory) adapterFactory)
				.getRootAdapterFactory(),
			getResourceLocator(),
			getString("_UI_ASTNode_startPosition_feature"), //$NON-NLS-1$
			getString("_UI_PropertyDescriptor_description", //$NON-NLS-1$
				"_UI_ASTNode_startPosition_feature", "_UI_ASTNode_type"), //$NON-NLS-1$ //$NON-NLS-2$
			UtilitiesPackage.Literals.AST_NODE__START_POSITION, true, false,
			false, ItemPropertyDescriptor.INTEGRAL_VALUE_IMAGE, null, null));
	}

	/**
	 * This adds a property descriptor for the End Position feature.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	protected void addEndPositionPropertyDescriptor(Object object) {
		itemPropertyDescriptors.add(createItemPropertyDescriptor(
			((ComposeableAdapterFactory) adapterFactory)
				.getRootAdapterFactory(),
			getResourceLocator(), getString("_UI_ASTNode_endPosition_feature"), //$NON-NLS-1$
			getString("_UI_PropertyDescriptor_description", //$NON-NLS-1$
				"_UI_ASTNode_endPosition_feature", "_UI_ASTNode_type"), //$NON-NLS-1$ //$NON-NLS-2$
			UtilitiesPackage.Literals.AST_NODE__END_POSITION, true, false,
			false, ItemPropertyDescriptor.INTEGRAL_VALUE_IMAGE, null, null));
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	protected boolean shouldComposeCreationImage() {
		return true;
	}

	/**
	 * This returns the label text for the adapted class.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public String getText(Object object) {
		OCLExpression<?> oclExpression = (OCLExpression<?>) object;
		return getString("_UI_OCLExpression_type") + " " //$NON-NLS-1$//$NON-NLS-2$
			+ oclExpression.getStartPosition();
	}

	/**
	 * 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(OCLExpression.class)) {
			case ExpressionsPackage.OCL_EXPRESSION__START_POSITION :
			case ExpressionsPackage.OCL_EXPRESSION__END_POSITION :
				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);
	}

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

}