/*
 * Copyright (c) 2005, 2018 IBM Corporation, Embarcadero Technologies, CEA, 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 - initial API and implementation
 *   Kenn Hussey (Embarcadero Technologies) - 215418, 204200
 *   Kenn Hussey - 323181, 438123
 *   Kenn Hussey (CEA) - 327039, 414970, 370089, 511674
 *
 */
package org.eclipse.uml2.uml.edit.providers;

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.EList;
import org.eclipse.emf.edit.provider.ComposeableAdapterFactory;
import org.eclipse.emf.edit.provider.IItemPropertyDescriptor;
import org.eclipse.emf.edit.provider.ItemPropertyDescriptor;
import org.eclipse.emf.edit.provider.ViewerNotification;

import org.eclipse.uml2.common.util.UML2Util;
import org.eclipse.uml2.uml.Extension;
import org.eclipse.uml2.uml.Property;
import org.eclipse.uml2.uml.Type;
import org.eclipse.uml2.uml.UMLPackage;

/**
 * This is the item provider adapter for a {@link org.eclipse.uml2.uml.Extension} object.
 * <!-- begin-user-doc -->
 * <!-- end-user-doc -->
 * @generated
 */
public class ExtensionItemProvider
		extends AssociationItemProvider {

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

			addIsRequiredPropertyDescriptor(object);
			addMetaclassPropertyDescriptor(object);
		}
		return itemPropertyDescriptors;
	}

	/**
	 * This adds a property descriptor for the Is Required feature.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	protected void addIsRequiredPropertyDescriptor(Object object) {
		itemPropertyDescriptors.add(createItemPropertyDescriptor(
			((ComposeableAdapterFactory) adapterFactory)
				.getRootAdapterFactory(),
			getResourceLocator(), getString("_UI_Extension_isRequired_feature"), //$NON-NLS-1$
			getString("_UI_PropertyDescriptor_description", //$NON-NLS-1$
				"_UI_Extension_isRequired_feature", "_UI_Extension_type"), //$NON-NLS-1$ //$NON-NLS-2$
			UMLPackage.Literals.EXTENSION__IS_REQUIRED, false, false, false,
			ItemPropertyDescriptor.BOOLEAN_VALUE_IMAGE, null,
			new String[]{"org.eclipse.ui.views.properties.expert" //$NON-NLS-1$
			}));
	}

	/**
	 * This adds a property descriptor for the Metaclass feature.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	protected void addMetaclassPropertyDescriptor(Object object) {
		itemPropertyDescriptors.add(createItemPropertyDescriptor(
			((ComposeableAdapterFactory) adapterFactory)
				.getRootAdapterFactory(),
			getResourceLocator(), getString("_UI_Extension_metaclass_feature"), //$NON-NLS-1$
			getString("_UI_PropertyDescriptor_description", //$NON-NLS-1$
				"_UI_Extension_metaclass_feature", "_UI_Extension_type"), //$NON-NLS-1$ //$NON-NLS-2$
			UMLPackage.Literals.EXTENSION__METACLASS, false, false, false, null,
			null, new String[]{"org.eclipse.ui.views.properties.expert" //$NON-NLS-1$
			}));
	}

	/**
	 * This returns Extension.gif.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public Object getImage(Object object) {
		return overlayImage(object,
			getResourceLocator().getImage("full/obj16/Extension")); //$NON-NLS-1$
	}

	/**
	 * <!-- 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 NOT
	 */
	@Override
	public String getText(Object object) {
		StringBuffer text = appendType(
			appendKeywords(new StringBuffer(), object), "_UI_Extension_type"); //$NON-NLS-1$

		Extension extension = (Extension) object;

		if (extension.isDerived()) {
			appendString(text, "/"); //$NON-NLS-1$
		}

		String label = extension.getLabel(shouldTranslate());

		if (!UML2Util.isEmpty(label)) {
			appendString(text, label);
		} else {
			EList<Property> memberEnds = extension.getMemberEnds();

			if (!memberEnds.isEmpty()) {
				appendString(text, "A"); //$NON-NLS-1$

				for (Property memberEnd : memberEnds) {
					String memberEndName = memberEnd.getName();

					text.append('_');

					if (!UML2Util.isEmpty(memberEndName)) {
						text.append(memberEndName);
					} else {
						Type type = memberEnd.getType();

						if (type != null) {
							String typeName = type.getName();

							if (!UML2Util.isEmpty(typeName)) {
								memberEndName = Character.toLowerCase(
									typeName.charAt(0)) + typeName.substring(1);
							}
						}

						if (!UML2Util.isEmpty(memberEndName)) {
							text.append(memberEndName);
						} else {
							text.append('<');
							text.append(getTypeText(memberEnd));
							text.append('>');
						}
					}
				}
			}
		}

		return text.toString();
	}

	/**
	 * 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(Extension.class)) {
			case UMLPackage.EXTENSION__IS_REQUIRED :
				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);
	}

	/**
	 * This returns the label text for {@link org.eclipse.emf.edit.command.CreateChildCommand}.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public String getCreateChildText(Object owner, Object feature, Object child,
			Collection<?> selection) {
		Object childFeature = feature;
		Object childObject = child;

		boolean qualify = childFeature == UMLPackage.Literals.CLASSIFIER__COLLABORATION_USE
			|| childFeature == UMLPackage.Literals.CLASSIFIER__REPRESENTATION
			|| childFeature == UMLPackage.Literals.ASSOCIATION__OWNED_END
			|| childFeature == UMLPackage.Literals.ASSOCIATION__NAVIGABLE_OWNED_END;

		if (qualify) {
			return getString("_UI_CreateChild_text2", //$NON-NLS-1$
				new Object[]{getTypeText(childObject),
					getFeatureText(childFeature), getTypeText(owner)});
		}
		return super.getCreateChildText(owner, feature, child, selection);
	}

}