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package eu.etaxonomy.taxeditor.view;
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import java.util.List;
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import java.util.Map;
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import java.util.Map.Entry;
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import java.util.UUID;
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import javax.inject.Inject;
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import javax.inject.Named;
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import org.eclipse.core.commands.Command;
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import org.eclipse.core.commands.common.NotDefinedException;
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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.e4.ui.di.AboutToShow;
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import org.eclipse.e4.ui.model.application.commands.MCommand;
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import org.eclipse.e4.ui.model.application.commands.MCommandsFactory;
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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.MMenu;
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import org.eclipse.e4.ui.model.application.ui.menu.MMenuElement;
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import org.eclipse.e4.ui.model.application.ui.menu.MMenuFactory;
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import org.eclipse.e4.ui.services.IServiceConstants;
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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.ICdmBase;
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import eu.etaxonomy.cdm.persistence.dto.UuidAndTitleCache;
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import eu.etaxonomy.taxeditor.l10n.Messages;
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/**
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* Generic context menu for opening elements in the taxeditor.
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*
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*/
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public class CdmViewerContextMenuE4 {
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@Inject
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private EHandlerService handlerService;
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@Inject
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private ECommandService commandService;
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@AboutToShow
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public void aboutToShow(List<MMenuElement> items, @Named(IServiceConstants.ACTIVE_SELECTION) Object selectedObject) {
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if(selectedObject instanceof IStructuredSelection){
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selectedObject = ((IStructuredSelection) selectedObject).getFirstElement();
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}
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if(selectedObject instanceof TreeNode){
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selectedObject = ((TreeNode) selectedObject).getValue();
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}
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Map<Command, String> enabledCommands = CdmViewerUtilE4.getAvailableViewers(selectedObject, commandService, handlerService);
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//get UUID
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UUID uuid = null;
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//for generic UuidAndTitleCache objects try to load the object
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if (selectedObject instanceof UuidAndTitleCache){
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uuid = ((UuidAndTitleCache)selectedObject).getUuid();
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}
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if(selectedObject instanceof ICdmBase){
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uuid = ((ICdmBase) selectedObject).getUuid();
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}
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//check if only one or multiple viewers/commands are available
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if(enabledCommands.size()==1){
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Entry<Command, String> entry = enabledCommands.entrySet().iterator().next();
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final Command command = entry.getKey();
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String viewerName = entry.getValue();
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addCommand(uuid, command, String.format(Messages.CdmViewerContextMenu_OPEN, viewerName));
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}
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else if(enabledCommands.size()>1){
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MMenu menu = MMenuFactory.INSTANCE.createMenu();
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menu.setLabel(Messages.CdmViewerContextMenu_OPEN_IN);
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items.add(menu);
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for(Entry<Command, String> entry:enabledCommands.entrySet()){
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String viewerName = entry.getValue();
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Command command = entry.getKey();
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menu.getChildren().add(addCommand(uuid, command, viewerName));
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}
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}
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}
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public MHandledMenuItem addCommand(UUID uuid, Command command, String commandLabel) {
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MHandledMenuItem menuItem = MMenuFactory.INSTANCE.createHandledMenuItem();
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menuItem.setLabel(commandLabel);
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MCommand mCommand = MCommandsFactory.INSTANCE.createCommand();
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mCommand.setElementId(command.getId());
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mCommand.setCommandName(commandLabel);
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try {
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mCommand.setCommandName(command.getName());
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} catch (NotDefinedException e) {
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e.printStackTrace();
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}
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//set params
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menuItem.getTransientData().put(command.getId()+".uuid", uuid);
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// MParameter parameter = MCommandsFactory.INSTANCE.createParameter();
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// parameter.setElementId(command.getId()+".uuid");
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// parameter.setValue(uuid.toString());
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// menuItem.getParameters().add(parameter);
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menuItem.setCommand(mCommand);
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return menuItem;
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}
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}
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