/*******************************************************************************
 * Copyright (c) 2007, 2010 BMW Car IT, Technische Universitaet Muenchen, 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:
 * BMW Car IT - Initial API and implementation
 * Technische Universitaet Muenchen - Major refactoring and extension
 *******************************************************************************/
package org.eclipse.emf.edapt.spi.history.provider;

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

import org.eclipse.emf.common.command.Command;
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.edapt.history.provider.util.RestrictingDragAndDropCommand;
import org.eclipse.emf.edapt.spi.history.Change;
import org.eclipse.emf.edapt.spi.history.HistoryPackage;
import org.eclipse.emf.edit.domain.EditingDomain;
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;

/**
 * This is the item provider adapter for a {@link org.eclipse.emf.edapt.spi.history.Change} object.
 * <!-- begin-user-doc -->
 * <!-- end-user-doc -->
 *
 * @generated
 */
public class ChangeItemProvider
	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 ChangeItemProvider(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);

			addBreakingPropertyDescriptor(object);
			addDescriptionPropertyDescriptor(object);
		}
		return itemPropertyDescriptors;
	}

	/**
	 * This adds a property descriptor for the Breaking feature.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 *
	 * @generated
	 */
	protected void addBreakingPropertyDescriptor(Object object) {
		itemPropertyDescriptors.add
			(createItemPropertyDescriptor
			(((ComposeableAdapterFactory) adapterFactory).getRootAdapterFactory(),
				getResourceLocator(),
				getString("_UI_Change_breaking_feature"), //$NON-NLS-1$
				getString("_UI_PropertyDescriptor_description", "_UI_Change_breaking_feature", "_UI_Change_type"), //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
				HistoryPackage.Literals.CHANGE__BREAKING,
				true,
				false,
				false,
				ItemPropertyDescriptor.BOOLEAN_VALUE_IMAGE,
				null,
				null));
	}

	/**
	 * This adds a property descriptor for the Description feature.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 *
	 * @generated
	 */
	protected void addDescriptionPropertyDescriptor(Object object) {
		itemPropertyDescriptors.add
			(createItemPropertyDescriptor
			(((ComposeableAdapterFactory) adapterFactory).getRootAdapterFactory(),
				getResourceLocator(),
				getString("_UI_Change_description_feature"), //$NON-NLS-1$
				getString("_UI_PropertyDescriptor_description", "_UI_Change_description_feature", "_UI_Change_type"), //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
				HistoryPackage.Literals.CHANGE__DESCRIPTION,
				true,
				true,
				false,
				ItemPropertyDescriptor.GENERIC_VALUE_IMAGE,
				null,
				null));
	}

	/**
	 * This returns the label text for the adapted class.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 *
	 * @generated
	 */
	@Override
	public String getText(Object object) {
		final String label = crop(((Change) object).getDescription());
		return label == null || label.length() == 0 ?
			getString("_UI_Change_type") : //$NON-NLS-1$
			getString("_UI_Change_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 -->
	 * <!-- end-user-doc -->
	 *
	 * @generated
	 */
	@Override
	public void notifyChanged(Notification notification) {
		updateChildren(notification);

		switch (notification.getFeatureID(Change.class)) {
		case HistoryPackage.CHANGE__BREAKING:
		case HistoryPackage.CHANGE__DESCRIPTION:
			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 HistoryEditPlugin.INSTANCE;
	}

	@Override
	protected Command createDragAndDropCommand(EditingDomain domain,
		Object owner, float location, int operations, int operation,
		Collection<?> collection) {
		return new RestrictingDragAndDropCommand(domain, owner, location,
			operations, operation, collection);
	}

}