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/**
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* Copyright (C) 2018 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.taxeditor.editor.view.media.handler;
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import java.util.ArrayList;
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import java.util.HashSet;
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import java.util.Iterator;
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import java.util.List;
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import java.util.Set;
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import javax.inject.Named;
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import org.eclipse.core.runtime.IStatus;
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import org.eclipse.e4.core.di.annotations.CanExecute;
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import org.eclipse.e4.core.di.annotations.Execute;
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import org.eclipse.e4.ui.di.UISynchronize;
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import org.eclipse.e4.ui.model.application.ui.basic.MPart;
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import org.eclipse.e4.ui.model.application.ui.menu.MHandledMenuItem;
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import org.eclipse.e4.ui.model.application.ui.menu.MMenuItem;
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import org.eclipse.e4.ui.services.IServiceConstants;
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import org.eclipse.jface.dialogs.MessageDialog;
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import org.eclipse.jface.viewers.ISelection;
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import org.eclipse.jface.viewers.TreePath;
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import org.eclipse.jface.viewers.TreeSelection;
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import org.eclipse.swt.widgets.Shell;
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import eu.etaxonomy.cdm.api.service.config.MediaDeletionConfigurator;
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import eu.etaxonomy.cdm.model.description.DescriptionBase;
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import eu.etaxonomy.cdm.model.description.DescriptionElementBase;
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import eu.etaxonomy.cdm.model.description.SpecimenDescription;
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import eu.etaxonomy.cdm.model.description.TaxonDescription;
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import eu.etaxonomy.cdm.model.description.TaxonNameDescription;
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import eu.etaxonomy.cdm.model.media.Media;
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import eu.etaxonomy.taxeditor.editor.EditorUtil;
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import eu.etaxonomy.taxeditor.editor.l10n.Messages;
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import eu.etaxonomy.taxeditor.editor.name.e4.TaxonNameEditor;
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import eu.etaxonomy.taxeditor.editor.view.descriptive.operation.DeleteSpecimenDescriptionOperation;
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import eu.etaxonomy.taxeditor.editor.view.descriptive.operation.DeleteTaxonDescriptionOperation;
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import eu.etaxonomy.taxeditor.editor.view.media.e4.MediaViewPartE4;
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import eu.etaxonomy.taxeditor.editor.view.media.operation.DeleteMediaOperation;
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import eu.etaxonomy.taxeditor.model.AbstractUtility;
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import eu.etaxonomy.taxeditor.operation.AbstractPostOperation;
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import eu.etaxonomy.taxeditor.ui.dialog.configurator.deleteConfigurator.DeleteConfiguratorDialog;
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/**
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* @author pplitzner
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* @since Aug 15, 2017
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*/
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public class DeleteMediaHandler {
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@Execute
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public void execute(@Named(IServiceConstants.ACTIVE_PART) MPart activePart,
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@Named(IServiceConstants.ACTIVE_SHELL)Shell shell,
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MMenuItem menuItem,
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UISynchronize sync) {
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MediaViewPartE4 mediaView = (MediaViewPartE4) activePart.getObject();
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TreeSelection selection = (TreeSelection) mediaView.getViewer().getSelection();
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for(Iterator<?> iter = selection.iterator();iter.hasNext();){
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Object object = iter.next();
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TreePath[] paths = selection.getPaths();
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int count = paths[0].getSegmentCount();
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DescriptionBase<?> description = null;
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for (int i = 0; i < count; i++ ) {
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if (paths[0].getSegment(i) instanceof DescriptionBase) {
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description = (DescriptionBase<?>) paths[0].getSegment(i);
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break;
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}
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}
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if(object instanceof Media){
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// TODO use undo context specific to editor
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if (!((Media)object).isPersited()){
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Set<DescriptionElementBase> elements = description.getElements();
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if (elements.size() == 1){
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DescriptionElementBase element = elements.iterator().next();
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Set<Media> toDelete = new HashSet<>();
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element.removeMedia((Media)object);
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((TaxonNameEditor)mediaView.getSelectionProvidingPart().getObject()).redraw();
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return;
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}
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}
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MediaDeletionConfigurator config = fillDeleteConfigurator(shell, description, Messages.DeleteMediaHandler_CONFIRM_MESSAGE_MEDIA);
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if (config == null){
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return;
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}
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List<Media> mediaList = new ArrayList<>();
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mediaList.add((Media)object);
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createMediaDeleteOperation(menuItem.getLocalizedLabel(), sync, mediaView, mediaList, description, config);
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}
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if(object instanceof DescriptionBase && ((DescriptionBase<?>) object).isImageGallery()){
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if (!((DescriptionBase<?>)object).getElements().isEmpty()){
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Set<DescriptionElementBase> elements = description.getElements();
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boolean containsPersistedMedia = false;
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DescriptionElementBase element = null;
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List<Media> mediaList = new ArrayList<>();
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if (elements.size() == 1){
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element = elements.iterator().next();
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// containsPersistedMedia = element.getMedia().isEmpty();
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if (element.getMedia() != null && !element.getMedia().isEmpty()){
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for (Media media: element.getMedia()){
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containsPersistedMedia |= media.isPersited();
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if (media.isPersited()){
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mediaList.add(media);
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}
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}
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}
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}
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if (containsPersistedMedia){
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MediaDeletionConfigurator config = fillDeleteConfigurator(shell, description, Messages.DeleteMediaHandler_CONFIRM_MESSAGE_DESCRIPTION);
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if (config == null){
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return;
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}
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if (element != null){
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createMediaDeleteOperation(menuItem.getLocalizedLabel(), sync, mediaView, mediaList, description, config);
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}
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}
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}
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if(object instanceof TaxonDescription){
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DeleteTaxonDescriptionOperation deleteTaxonDescriptionOperation = new DeleteTaxonDescriptionOperation(menuItem.getLocalizedLabel(), EditorUtil.getUndoContext(), (TaxonDescription)object, mediaView, null);
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if (mediaView.getSelectionProvidingPart().getObject() instanceof TaxonNameEditor){
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((TaxonNameEditor)mediaView.getSelectionProvidingPart().getObject()).getTaxon().removeDescription((TaxonDescription)description);
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((TaxonNameEditor)mediaView.getSelectionProvidingPart().getObject()).getEditorInput().addOperation(deleteTaxonDescriptionOperation);
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((TaxonNameEditor)mediaView.getSelectionProvidingPart().getObject()).setDirty();
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((TaxonNameEditor)mediaView.getSelectionProvidingPart().getObject()).redraw();
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}else{
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AbstractUtility.executeOperation(deleteTaxonDescriptionOperation, sync);
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}
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}
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else if(object instanceof SpecimenDescription){
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DeleteSpecimenDescriptionOperation deleteTaxonDescriptionOperation = new DeleteSpecimenDescriptionOperation(menuItem.getLocalizedLabel(), EditorUtil.getUndoContext(), (SpecimenDescription)object, mediaView, null);
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if (mediaView.getSelectionProvidingPart().getObject() instanceof TaxonNameEditor){
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((TaxonNameEditor)mediaView.getSelectionProvidingPart().getObject()).getEditorInput().addOperation(deleteTaxonDescriptionOperation);
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((TaxonNameEditor)mediaView.getSelectionProvidingPart().getObject()).setDirty();
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((TaxonNameEditor)mediaView.getSelectionProvidingPart().getObject()).redraw();
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}else{
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AbstractUtility.executeOperation(deleteTaxonDescriptionOperation, sync);
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}
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}
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}
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}
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}
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public void createMediaDeleteOperation(String menuLabel, UISynchronize sync, MediaViewPartE4 mediaView,
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List<Media> media, DescriptionBase<?> description, MediaDeletionConfigurator config) {
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AbstractPostOperation<?> operation = new DeleteMediaOperation(menuLabel, EditorUtil.getUndoContext(), description, media, config, mediaView);
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if (mediaView.getSelectionProvidingPart().getObject() instanceof TaxonNameEditor){
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if (!config.isOnlyRemoveFromGallery()){
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((TaxonNameEditor)mediaView.getSelectionProvidingPart().getObject()).getEditorInput().addOperation(operation);
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}
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if (description.isImageGallery()){
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Set<DescriptionElementBase> elements = description.getElements();
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if (elements.size() == 1){
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DescriptionElementBase element = elements.iterator().next();
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Set<Media> toDelete = new HashSet<>();
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for (Media mediaElement:media){
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toDelete.add(mediaElement);
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}
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for (Media mediaElement:toDelete){
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element.removeMedia(mediaElement);
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}
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}
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}
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((TaxonNameEditor)mediaView.getSelectionProvidingPart().getObject()).setDirty();
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((TaxonNameEditor)mediaView.getSelectionProvidingPart().getObject()).redraw();
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}else{
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AbstractUtility.executeOperation(operation, sync);
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}
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}
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public MediaDeletionConfigurator fillDeleteConfigurator(Shell shell, DescriptionBase<?> description, String message) {
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MediaDeletionConfigurator config = new MediaDeletionConfigurator();
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config.setDeleteFromDescription(true);
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config.setOnlyRemoveFromGallery(false);
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if (description instanceof SpecimenDescription){
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config.setDeleteFrom(((SpecimenDescription)description).getDescribedSpecimenOrObservation());
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} else if (description instanceof TaxonDescription){
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config.setDeleteFrom(((TaxonDescription)description).getTaxon());
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}else if (description instanceof TaxonNameDescription){
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config.setDeleteFrom(((TaxonNameDescription)description).getTaxonName());
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}
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DeleteConfiguratorDialog dialog;
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dialog = new DeleteConfiguratorDialog(config, shell, Messages.DeleteMediaHandler_CONFIRM, null, message, MessageDialog.WARNING, new String[] { Messages.DeleteMediaHandler_DELETE, Messages.DeleteMediaHandler_SKIP }, 0);
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int result_dialog= dialog.open();
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if (result_dialog != IStatus.OK){
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return null;
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}
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return config;
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}
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@CanExecute
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public boolean canExecute(@Named(IServiceConstants.ACTIVE_PART) MPart activePart,
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MHandledMenuItem menuItem){
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MediaViewPartE4 mediaView = (MediaViewPartE4) activePart.getObject();
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ISelection selection = mediaView.getViewer().getSelection();
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boolean canExecute = selection instanceof TreeSelection && !selection.isEmpty();
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for(Iterator<?> iter = ((TreeSelection) selection).iterator();iter.hasNext();){
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Object object = iter.next();
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canExecute &= object instanceof Media
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|| (object instanceof DescriptionBase && ((DescriptionBase<?>) object).isImageGallery());
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}
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menuItem.setVisible(canExecute);
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return canExecute;
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}
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}
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