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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.HashMap;
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import java.util.Map;
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import java.util.UUID;
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import org.eclipse.core.commands.Command;
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import org.eclipse.core.commands.ParameterizedCommand;
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import org.eclipse.core.commands.common.NotDefinedException;
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import org.eclipse.jface.dialogs.PopupDialog;
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import org.eclipse.jface.viewers.ArrayContentProvider;
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import org.eclipse.jface.viewers.ILabelProvider;
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import org.eclipse.jface.viewers.ILabelProviderListener;
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import org.eclipse.jface.viewers.ISelection;
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import org.eclipse.jface.viewers.ISelectionChangedListener;
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import org.eclipse.jface.viewers.IStructuredSelection;
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import org.eclipse.jface.viewers.SelectionChangedEvent;
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import org.eclipse.jface.viewers.TableViewer;
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import org.eclipse.swt.SWT;
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import org.eclipse.swt.graphics.Image;
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import org.eclipse.swt.widgets.Composite;
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import org.eclipse.swt.widgets.Control;
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import org.eclipse.swt.widgets.Shell;
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import org.eclipse.swt.widgets.Table;
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import org.eclipse.ui.PlatformUI;
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import org.eclipse.ui.handlers.IHandlerService;
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import eu.etaxonomy.cdm.api.service.IOccurrenceService;
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import eu.etaxonomy.cdm.api.service.ITaxonService;
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import eu.etaxonomy.cdm.model.common.ICdmBase;
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import eu.etaxonomy.cdm.model.occurrence.SpecimenOrObservationBase;
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import eu.etaxonomy.cdm.model.taxon.Synonym;
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import eu.etaxonomy.cdm.model.taxon.Taxon;
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import eu.etaxonomy.cdm.persistence.dto.UuidAndTitleCache;
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import eu.etaxonomy.taxeditor.model.MessagingUtils;
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import eu.etaxonomy.taxeditor.store.CdmStore;
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/**
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* This class opens a popup dialog and provides the possibility to choose from a
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* list of possible viewers which can be opened for a given input.
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*
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* @author pplitzner
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* @date Feb 23, 2015
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*
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*/
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public class CdmViewerChooser extends PopupDialog implements ISelectionChangedListener, ILabelProvider{
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private Map<Command, String> nameViewerMap;
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private Object input;
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public CdmViewerChooser(Shell parentShell) {
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this(parentShell, SWT.RESIZE | SWT.ON_TOP, true, false, false, false, false, "Open in ...",
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"Clicking will open the selected viewer");
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}
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public CdmViewerChooser(Shell parent, int shellStyle, boolean takeFocusOnOpen, boolean persistSize,
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boolean persistLocation, boolean showDialogMenu, boolean showPersistActions, String titleText,
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String infoText) {
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super(parent, shellStyle, takeFocusOnOpen, persistSize, persistLocation, showDialogMenu, showPersistActions,
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titleText, infoText);
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}
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/**
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* Opens a popup dialog with all possible viewers for the given input.
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* @param input the input for which the viewers are listed
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*/
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public void chooseViewer(Object input){
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this.input = input;
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this.nameViewerMap = CdmViewerUtil.getAvailableViewers(input);
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//if only one editor is available then open it
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if(nameViewerMap.size()==1){
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Command command = nameViewerMap.keySet().iterator().next();
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executeCommand(command, input);
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}
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else{
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if(nameViewerMap.isEmpty()){
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this.setInfoText("No viewers registered for this input");
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}
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this.open();
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}
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}
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private void executeCommand(Command command, Object input) {
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//for generic UuidAndTitleCache objects try to load the object
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if (input instanceof UuidAndTitleCache){
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UuidAndTitleCache uuidAndTitleCache = (UuidAndTitleCache)input;
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Class type = uuidAndTitleCache.getType();
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if(type == Taxon.class || type == Synonym.class){
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input = CdmStore.getService(ITaxonService.class).load(uuidAndTitleCache.getUuid());
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}
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else if(SpecimenOrObservationBase.class.isAssignableFrom(type)){
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input = CdmStore.getService(IOccurrenceService.class).load(uuidAndTitleCache.getUuid());
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}
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}
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//set uuid parameter
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if(input instanceof ICdmBase){
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Map<String, UUID> params = new HashMap<String, UUID>();
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String commandId = command.getId();
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params.put(commandId+".uuid", ((ICdmBase) input).getUuid());
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if(command.isEnabled()) {
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//build the parameterized command
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ParameterizedCommand pc = ParameterizedCommand.generateCommand(command, params);
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IHandlerService handlerService = (IHandlerService)PlatformUI.getWorkbench().getService(IHandlerService.class);
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try {
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if(pc!=null){
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handlerService.executeCommand(pc, null);
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}
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else{
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handlerService.executeCommand(commandId, null);
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}
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} catch (NotDefinedException nde) {
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throw new RuntimeException("Could not find open command: " + commandId);
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} catch (Exception exception) {
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MessagingUtils.error(getClass(), "An exception occured while trying execute "+commandId, exception);
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}
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}
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}
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}
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@Override
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protected Control createDialogArea(Composite parent) {
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TableViewer viewer = new TableViewer(new Table(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL | SWT.FULL_SELECTION));
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viewer.setContentProvider(new ArrayContentProvider());
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viewer.setLabelProvider(this);
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viewer.addSelectionChangedListener(this);
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viewer.setInput(nameViewerMap.keySet());
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return parent;
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}
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@Override
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public void selectionChanged(SelectionChangedEvent event) {
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ISelection selection = event.getSelection();
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if(selection instanceof IStructuredSelection){
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Object firstElement = ((IStructuredSelection) selection).getFirstElement();
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if(firstElement instanceof Command && nameViewerMap.containsKey(firstElement)){
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executeCommand((Command) firstElement, this.input);
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this.close();
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}
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}
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}
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@Override
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public String getText(Object element) {
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return nameViewerMap.get(element);
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}
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@Override
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public void addListener(ILabelProviderListener listener) {
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// TODO Auto-generated method stub
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}
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@Override
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public void dispose() {
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// TODO Auto-generated method stub
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}
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@Override
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public boolean isLabelProperty(Object element, String property) {
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// TODO Auto-generated method stub
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return false;
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}
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@Override
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public void removeListener(ILabelProviderListener listener) {
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// TODO Auto-generated method stub
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}
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@Override
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public Image getImage(Object element) {
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// TODO Auto-generated method stub
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return null;
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}
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}
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