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/**
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* Copyright (C) 2015 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.view;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Map;
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import java.util.Set;
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import org.eclipse.core.commands.Command;
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import org.eclipse.core.runtime.IConfigurationElement;
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import org.eclipse.core.runtime.IExtensionRegistry;
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import org.eclipse.core.runtime.Platform;
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import org.eclipse.e4.core.commands.ECommandService;
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import org.eclipse.e4.core.commands.EHandlerService;
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import org.eclipse.jface.viewers.IStructuredSelection;
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import org.eclipse.jface.viewers.TreeNode;
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import eu.etaxonomy.cdm.model.common.CdmBase;
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import eu.etaxonomy.cdm.model.common.ICdmBase;
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import eu.etaxonomy.cdm.persistence.dto.ReferencingObjectDto;
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import eu.etaxonomy.cdm.persistence.dto.UuidAndTitleCache;
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import eu.etaxonomy.taxeditor.model.FeatureNodeContainer;
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import eu.etaxonomy.taxeditor.model.MessagingUtils;
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/**
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* Scans eu.etaxonomy.taxeditor.store.cdmViewer extension point.
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* @author pplitzner
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* @date Jul 7, 2015
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*/
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public class CdmViewerUtilE4 {
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/**
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* Returns a map of available commands to open the given input. Keys are the
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* command IDs and values are their string representations.
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*
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* @param input
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* the object which should be handled by the available commands
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* @return a key-value map of available commands and their string
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* representation
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*/
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public static Map<Command, String> getAvailableViewers(List<UuidAndTitleCache<? extends ICdmBase>> input, ECommandService commandService,
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EHandlerService handlerService){
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Map<Command, String> commandViewerNameMap = new HashMap<>();
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Set<Class<?>> inputClasses = new HashSet<>();
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if(input!=null){
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input.stream()
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.filter(uuid->uuid.getType()!= null)
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.forEach(uuid->inputClasses.add(uuid.getType()));
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inputClasses.forEach(ic->{
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IExtensionRegistry reg = Platform.getExtensionRegistry();
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IConfigurationElement[] extensions = reg
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.getConfigurationElementsFor("eu.etaxonomy.taxeditor.store.cdmViewer"); //$NON-NLS-1$
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for (IConfigurationElement configElement : extensions) {
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try {
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if(configElement.getName().equals("viewCommandMapping")){ //$NON-NLS-1$
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String commandId = configElement.getAttribute("commandId"); //$NON-NLS-1$
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String viewerName = configElement.getAttribute("viewerName"); //$NON-NLS-1$
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Class<?> selectionClass = Class.forName(configElement.getAttribute("selection")); //$NON-NLS-1$
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if(selectionClass!=null
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&& commandId!=null
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&& viewerName!=null
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&& selectionClass.isAssignableFrom(ic)){
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Command command = commandService.getCommand(commandId);
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commandViewerNameMap.put(command, viewerName);
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}
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}
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} catch (ClassNotFoundException e) {
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MessagingUtils.error(CdmViewerChooser.class, "Could not initalize selection class element of cdmViewer extension", e); //$NON-NLS-1$
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}
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}
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});
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}
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return commandViewerNameMap;
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}
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/**
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* Trys to create a List of {@link UuidAndTitleCache} from the selection.<BR>
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* Selections which are not recognized are not included in the list.<BR>
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* As a minimum each returned element contains the type and the uuid.
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* If available also the label and the CdmBase entity is added (later by using the subclass {@link DtoWithEntity}.
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* Label creation is not forced (TODO maybe in future we should have a parameter forceLabelCreation)
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* @param
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* @return list of {@link UuidAndTitleCache}
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*/
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public static List<UuidAndTitleCache<? extends ICdmBase>> transformSelectionToUuidAndTitleCacheList(Object selection) {
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//make it all a list
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List<Object> multipleSelection = new ArrayList<>();
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if(selection instanceof IStructuredSelection){
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IStructuredSelection structuredSelection = ((IStructuredSelection) selection);
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((List<?>)structuredSelection.toList()).forEach(o->multipleSelection.add(o));
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}else if(selection.getClass().isArray()){
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for (Object o : ((Object[])selection)){
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multipleSelection.add(o);
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}
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}else if(selection instanceof List){
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multipleSelection.addAll((List<?>)selection);
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}else{
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multipleSelection.add(selection);
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}
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//filter all as uuidIdAndTitleCache
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List<UuidAndTitleCache<? extends ICdmBase>> uuidTypes = new ArrayList<>();
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for (Object o : multipleSelection){
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if (o instanceof FeatureNodeContainer){
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continue ;
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}
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if(o instanceof TreeNode){
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o = ((TreeNode)o).getValue();
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}
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o = CdmBase.deproxy(o);
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UuidAndTitleCache<? extends ICdmBase> uuidAndTitleCache;
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if (o instanceof CdmBase){
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CdmBase cdmBase = (CdmBase)o;
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uuidAndTitleCache = new DtoWithEntity<>(cdmBase);
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}else if (o instanceof ReferencingObjectDto){
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ReferencingObjectDto dto = (ReferencingObjectDto)o;
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uuidAndTitleCache = dto.getOpenInTarget() != null ? dto.getOpenInTarget() : dto;
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}else if (o instanceof UuidAndTitleCache){
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uuidAndTitleCache = (UuidAndTitleCache<CdmBase>)o;
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}else{
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continue;
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}
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uuidTypes.add(uuidAndTitleCache);
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}
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return uuidTypes;
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}
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}
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