EDIT

// $Id$

/**

* Copyright (C) 2007 EDIT

* European Distributed Institute of Taxonomy

* http://www.e-taxonomy.eu

*

* The contents of this file are subject to the Mozilla Public License Version 1.1

* See LICENSE.TXT at the top of this package for the full license terms.

*/

package eu.etaxonomy.taxeditor.ui.dialog.selection;

import java.util.ArrayList;

import java.util.Collection;

import java.util.HashSet;

import java.util.List;

import java.util.Set;

import java.util.UUID;

import org.eclipse.jface.action.Action;

import org.eclipse.jface.action.IAction;

import org.eclipse.jface.action.IMenuManager;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.Control;

import org.eclipse.swt.widgets.Shell;

import eu.etaxonomy.cdm.api.conversation.ConversationHolder;

import eu.etaxonomy.cdm.api.service.IVocabularyService;

import eu.etaxonomy.cdm.hibernate.HibernateProxyHelper;

import eu.etaxonomy.cdm.model.common.CdmBase;

import eu.etaxonomy.cdm.model.common.TermType;

import eu.etaxonomy.cdm.model.common.TermVocabulary;

import eu.etaxonomy.cdm.model.location.NamedArea;

import eu.etaxonomy.cdm.persistence.dto.UuidAndTitleCache;

import eu.etaxonomy.taxeditor.model.MessagingUtils;

import eu.etaxonomy.taxeditor.newWizard.AbstractNewEntityWizard;

import eu.etaxonomy.taxeditor.preference.PreferencesUtil;

import eu.etaxonomy.taxeditor.store.CdmStore;

/**

 * @author n.hoffmann

 * @created May 11, 2010

 * @version 1.0

 */

public class NamedAreaSelectionDialog extends

		AbstractFilteredCdmResourceSelectionDialog<NamedArea> {

	private class IncludeNamedAreaVocabulary extends Action {

		private final TermVocabulary<NamedArea> vocabulary;

		/**

		 * Creates a new instance of the class.

		 */

		public IncludeNamedAreaVocabulary(TermVocabulary<NamedArea> vocabulary) {

			super(vocabulary.getTitleCache(), IAction.AS_CHECK_BOX);

			this.vocabulary = vocabulary;

		}

		@Override

        public void run(){

			if(isChecked()){

				selectedVocabularies.add(vocabulary);

			}else{

				selectedVocabularies.remove(vocabulary);

			}

			PreferencesUtil.getPreferenceStore().setValue(getPrefKey(vocabulary), !isChecked());

			initModel();

		}

	}

	protected Collection<TermVocabulary> selectedVocabularies;

    protected ArrayList<TermVocabulary> preselectedVocabularies;

    private Object preferenceID;

	/**

	 * Creates a filtered selection dialog to select a named area.

	 *

	 * @param shell

	 * 				The shell for displaying this widget

	 * @param namedArea

	 * 				A namedArea that should be selected when the dialog opens

	 * @param conversation a {@link eu.etaxonomy.cdm.api.conversation.ConversationHolder} object.

	 * @param preferenceId a class which is used for generating the preference key so that every 

	 * dialogs can be grouped to have their own preferences depending on this id

	 * @param preselectedVocabularyUuids the {@link UUID}s of the pre-selected vocabularies

	 * @return a {@link eu.etaxonomy.cdm.model.location.NamedArea} object.

	 */

	public static NamedArea select(Shell shell, ConversationHolder conversation, NamedArea namedArea, String preferenceId, UUID... preselectedVocabularyUuids) {

		NamedAreaSelectionDialog dialog = new NamedAreaSelectionDialog(shell, conversation,

				"Choose an area", false, namedArea, preferenceId, preselectedVocabularyUuids);

		return getSelectionFromDialog(dialog);

	}

	protected NamedAreaSelectionDialog(Shell shell, ConversationHolder conversation, String title, boolean multi, NamedArea namedArea, Object preferenceId, UUID... preselectedVocabularyUuids) {

		super(shell, conversation, title, multi, NamedAreaSelectionDialog.class.getCanonicalName(), namedArea);

		this.preferenceID = preferenceId;

		preselectedVocabularies = new ArrayList<TermVocabulary>();

		for(int i=0;i<preselectedVocabularyUuids.length;i++){

			TermVocabulary preselectedVocabulary = CdmStore.getService(IVocabularyService.class).find(preselectedVocabularyUuids[i]);

			preselectedVocabularies.add(preselectedVocabulary);

		}

		Collection<TermVocabulary> tempSelectedVocabularies = new HashSet<>();

		for(TermVocabulary vocabulary:selectedVocabularies){

			if(preselectedVocabularies.contains(vocabulary)

					|| !PreferencesUtil.getPreferenceStore().getBoolean(getPrefKey(vocabulary))){

				tempSelectedVocabularies.add(vocabulary);

			}

		}

		selectedVocabularies = tempSelectedVocabularies;

		initModel();//re-init to consider pre-selected vocabularies

	}

	/** {@inheritDoc} */

	@Override

	protected void fillViewMenu(IMenuManager menuManager) {

		super.fillViewMenu(menuManager);

		for(TermVocabulary<NamedArea> vocabulary : getAvailableVocabularies()){

			IncludeNamedAreaVocabulary action = new IncludeNamedAreaVocabulary(vocabulary);

			menuManager.add(action);

			if(preselectedVocabularies.contains(vocabulary)) {

			    action.setChecked(true);

			}

			else{

				action.setChecked(!PreferencesUtil.getPreferenceStore().getBoolean(getPrefKey(vocabulary)));

			}

		}

	}

	private String getPrefKey(TermVocabulary vocabulary){

		return "hide_"+NamedAreaSelectionDialog.class.getCanonicalName()+vocabulary.getUuid()+preferenceID;

	}

	/** {@inheritDoc} */

	@Override

	protected NamedArea getPersistentObject(UUID uuid) {

		for(TermVocabulary<NamedArea> vocabulary : selectedVocabularies){

			for(Object object : vocabulary.getTerms()){

				CdmBase cdmBaseObject = (CdmBase) object;

				if(uuid.equals(cdmBaseObject.getUuid())){

					return CdmBase.deproxy(cdmBaseObject, NamedArea.class);

				}

			}

		}

		return null;

	}

	/** {@inheritDoc} */

	@Override

	protected void init() {

		selectedVocabularies = getAvailableVocabularies();

	}

	private List<TermVocabulary> getAvailableVocabularies(){

		List<TermVocabulary> vocabularies = CdmStore.getService(IVocabularyService.class).listByTermType(TermType.NamedArea, true, null, null, null, null);

		return vocabularies;

	}

	/** {@inheritDoc} */

	@Override

	protected void initModel() {

		Set<NamedArea> terms = new HashSet<NamedArea>();

		for(TermVocabulary<NamedArea> vocabulary : selectedVocabularies){

			terms.addAll(vocabulary.getTermsOrderedByLabels(CdmStore.getDefaultLanguage()));

		}

		if(model == null){

			model = new ArrayList<UuidAndTitleCache<NamedArea>>();

		}

		model.clear();

		for(Object areaObject : terms){

			NamedArea area = (NamedArea) HibernateProxyHelper.deproxy(areaObject);

			UuidAndTitleCache<NamedArea> element = new UuidAndTitleCache<NamedArea>(NamedArea.class, area.getUuid(), area.getId(), getTitle(area));

			model.add(element);

		}

	}

	/** {@inheritDoc} */

	@Override

	protected Control createExtendedContentArea(Composite parent) {

		return null;

	}

	/** {@inheritDoc} */

	@Override

	protected String getTitle(NamedArea namedArea) {

		try {

			String result = NamedArea.labelWithLevel(namedArea, CdmStore.getDefaultLanguage());

			return result;

		} catch (Exception e) {

			MessagingUtils.error(NamedAreaSelectionDialog.class, "Error occurred when trying retrieve title for Named Area: " + namedArea.getUuid(), e);

			return namedArea.getTitleCache();

		}

	}

	/** {@inheritDoc} */

	@Override

	protected AbstractNewEntityWizard getNewEntityWizard(String parameter) {

		return null;

	}

	/** {@inheritDoc} */

	@Override

	protected String getNewWizardLinkText() {

		return null;

	}

}