//------------------------------------------------------------------------------
// Copyright (c) 2005, 2007 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 implementation
//------------------------------------------------------------------------------
package org.eclipse.epf.authoring.ui.forms;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.edit.ui.provider.AdapterFactoryContentProvider;
import org.eclipse.epf.authoring.ui.AuthoringUIResources;
import org.eclipse.epf.authoring.ui.AuthoringUIText;
import org.eclipse.epf.authoring.ui.editors.MethodElementEditor;
import org.eclipse.epf.authoring.ui.filters.WorkProductFilter;
import org.eclipse.epf.library.edit.IFilter;
import org.eclipse.epf.library.edit.TngAdapterFactory;
import org.eclipse.epf.library.edit.command.IActionManager;
import org.eclipse.epf.library.edit.itemsfilter.FilterConstants;
import org.eclipse.epf.library.edit.util.CategorySortHelper;
import org.eclipse.epf.library.edit.util.ContentElementOrderList;
import org.eclipse.epf.library.edit.util.ModelStructure;
import org.eclipse.epf.uma.ContentElement;
import org.eclipse.epf.uma.Domain;
import org.eclipse.epf.uma.MethodElement;
import org.eclipse.epf.uma.UmaPackage;
import org.eclipse.epf.uma.WorkProduct;
import org.eclipse.epf.uma.util.AssociationHelper;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IEditorSite;
import org.eclipse.ui.forms.editor.FormEditor;


/**
 * The Work Products page in the Domain editor.
 * 
 * @author Lokanath Jagga
 * @author Bingxue Xu
 * @author Kelvin Low
 * @since 1.0
 * remove the to-one UI restriction on wp-domian (R395390) 2007-08-30
 */
public class DomainWorkProductsPage extends AssociationFormPage {

	private static final String FORM_PAGE_ID = "domainWorkProductsPage"; //$NON-NLS-1$

	private Domain domain;

	private IActionManager actionMgr;
	
	private ContentElementOrderList allSteps;

	/**
	 * Creates a new instance.
	 */
	public DomainWorkProductsPage(FormEditor editor) {
		super(editor, FORM_PAGE_ID, AuthoringUIText.WORK_PRODUCTS_PAGE_TITLE);
	}

	/**
	 * @see org.eclipse.epf.authoring.ui.forms.AssociationFormPage#init(org.eclipse.ui.IEditorSite, org.eclipse.ui.IEditorInput)
	 */
	public void init(IEditorSite site, IEditorInput input) {
		super.init(site, input);
		domain = (Domain) contentElement;
		actionMgr = ((MethodElementEditor) getEditor()).getActionManager();
		setUseCategory2(false);
		setUseCategory3(false);
		setIsUpAndDownButtonsRequired1(true);
	}

	/**
	 * @see org.eclipse.epf.authoring.ui.forms.AssociationFormPage#initContentProviderSelected()
	 */
	protected void initContentProviderSelected() {
		contentProviderSelected = new AdapterFactoryContentProvider(
				TngAdapterFactory.INSTANCE
						.getNavigatorView_ComposedAdapterFactory()) {
			public Object[] getElements(Object object) {
				//return ((Domain) object).getWorkProducts().toArray();
				if (allSteps == null) {
//					allSteps = new ContentElementOrderList(
//							contentElement,
//							ContentElementOrderList.CONTENT_ELEMENTS__FOR_ELEMENT_ONLY,
//							getOrderFeature());
					allSteps = getProviderExtender().newContentElementOrderList(contentElement, 
							ContentElementOrderList.CONTENT_ELEMENTS__FOR_ELEMENT_ONLY,
							getOrderFeature(), 1);					
				}
				if (getProviderExtender().useContentProviderAPIs()) {
					return getProviderExtender().getElements(object, 1);
				}
				List returnList = CategorySortHelper.sortCategoryElements(
						contentElement, allSteps.toArray());
				return returnList.toArray();
			}
		};
		viewer_selected.setContentProvider(contentProviderSelected);
	}

	/**
	 * @see org.eclipse.epf.authoring.ui.forms.AssociationFormPage#addItemsToModel1(ArrayList)
	 */
	protected void addItemsToModel1(ArrayList addItems) {
		// Uupdate the model.
		if (!addItems.isEmpty()) {
				// check to maintain many-to-one rule for domain-workproduct
			for (Iterator iter = addItems.iterator(); iter.hasNext();) {
				MethodElement element = (MethodElement) iter.next();
				List domains = AssociationHelper.getDomains((WorkProduct) element);
				if (domains != null && domains.size() > 0)	{
					Object associatedDomain = domains.get(0);
//					String msg = MessageFormat
//					.format(
//							LibraryEditResources.UserInteractionHelper_errRelationshipExists,
//							new Object[] {
//									element.getName(),
//									TngUtil
//											.getLabelWithPath(associatedDomain),
//									domain.getName() });
//					Messenger.INSTANCE.showWarning(
//							LibraryEditResources.errorDialog_title, msg);
//					return;
				}
				// check if this operation will modify the element in opposite
				// feature value
				//	
//				if (!UserInteractionHelper.checkModifyOpposite(domain,
//						UmaPackage.eINSTANCE.getDomain_WorkProducts(), element)) {
//					return;
//				}
			}

			actionMgr
					.doAction(IActionManager.ADD_MANY, domain,
							UmaPackage.eINSTANCE.getDomain_WorkProducts(),
							addItems, -1);
		}
	}

	/**
	 * @see org.eclipse.epf.authoring.ui.forms.AssociationFormPage#removeItemsFromModel1(ArrayList)
	 */
	protected void removeItemsFromModel1(ArrayList rmItems) {
		// Update the model.
		if (!rmItems.isEmpty()) {
			actionMgr.doAction(IActionManager.REMOVE_MANY, domain,
					UmaPackage.eINSTANCE.getDomain_WorkProducts(), rmItems, -1);
		}
	}
	
	/**
	 * @see org.eclipse.epf.authoring.ui.forms.DescriptionFormPage#getContentElement()
	 */
	protected Object getContentElement() {
		return domain;
	}

	/**
	 * @see org.eclipse.epf.authoring.ui.forms.DescriptionFormPage#getTabString()
	 */
	protected String getTabString() {
		return FilterConstants.WORKPRODUCTS;
	}

	/**
	 * @see org.eclipse.epf.authoring.ui.forms.DescriptionFormPage#getFilter()
	 */
	protected IFilter getFilter() {
		return filter = new WorkProductFilter() {
			protected boolean childAccept(Object obj) {
				if (obj instanceof ContentElement) {
					if (getHelper().isContributor((ContentElement) obj))
						return false;
				}
				return (obj instanceof WorkProduct);
			}
		};
	}

	/**
	 * @see org.eclipse.epf.authoring.ui.forms.AssociationFormPage#getMultipleSelectDescription(int)
	 */
	protected String getMultipleSelectDescription(int count) {
		return super.getMultipleSelectDescription(count, AuthoringUIResources.domainWorkProductsPage_multipleSelectDescription);
	}
	
	/**
	 * @see org.eclipse.epf.authoring.ui.forms.AssociationFormPage#getSectionDescription()
	 */
	protected String getSectionDescription() {
		return AuthoringUIResources.domainWorkProductsPage_sectionDescription;
	}

	/**
	 * @see org.eclipse.epf.authoring.ui.forms.AssociationFormPage#getSectionName()
	 */
	protected String getSectionName() {
		return AuthoringUIResources.domainWorkProductsPage_sectionName;
	}

	/**
	 * @see org.eclipse.epf.authoring.ui.forms.AssociationFormPage#getSelectedLabel()
	 */
	protected String getSelectedLabel() {
		return AuthoringUIResources.domainWorkProductsPage_selectedLabel;
	}
	
	/**
	 * @see org.eclipse.epf.authoring.ui.forms.AssociationFormPage#getSelectedLabel2()
	 */
	protected String getSelectedLabel2() {
		return AuthoringUIResources.domainWorkProductsPage_selectedLabel;
	}
	
	/**
	 * @see org.eclipse.epf.authoring.ui.forms.AssociationFormPage#getSelectedLabel3()
	 */
	protected String getSelectedLabel3() {
		return AuthoringUIResources.domainWorkProductsPage_selectedLabel;
	}
	
	@Override
	protected EStructuralFeature getOrderFeature() {
		return UmaPackage.eINSTANCE.getDomain_WorkProducts();
	}
	
	@Override
	protected String[] getModelStructurePath() {
		return ModelStructure.DEFAULT.domainPath;
	}
	
	@Override
	public ContentElementOrderList getContentElementOrderList() {
		return allSteps;
	}

}