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package eu.etaxonomy.taxeditor.workbench;
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import java.util.Collections;
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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.ParameterizedCommand;
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import org.eclipse.core.runtime.NullProgressMonitor;
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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.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.model.application.ui.basic.MPart;
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import org.eclipse.e4.ui.services.IServiceConstants;
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import org.eclipse.e4.ui.workbench.modeling.EPartService;
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import org.eclipse.ui.ISaveablePart;
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import org.eclipse.ui.internal.e4.compatibility.CompatibilityPart;
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import eu.etaxonomy.taxeditor.workbench.part.IE4SavablePart;
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import eu.etaxonomy.taxeditor.workbench.part.ISelectionElementEditingPart;
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public class SaveHandler {
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@Execute
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public void execute(EPartService partService, ECommandService commandService, EHandlerService handlerService
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, @Named(IServiceConstants.ACTIVE_PART)MPart activePart) {
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if(activePart.isDirty()){
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savePart(partService, commandService, handlerService, activePart);
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} else {
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Object e4WrappedPart = WorkbenchUtility.getE4WrappedPart(activePart.getObject());
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if(e4WrappedPart instanceof ISelectionElementEditingPart){
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ISelectionElementEditingPart editingPart = (ISelectionElementEditingPart)e4WrappedPart;
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Object savablePart = findSavablePart(editingPart);
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if(savablePart instanceof ISaveablePart){
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((ISaveablePart) savablePart).doSave(new NullProgressMonitor());
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}
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else if(savablePart instanceof IE4SavablePart){
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((IE4SavablePart) savablePart).save(new NullProgressMonitor());
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}
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else if(savablePart instanceof MPart){
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savePart(partService, commandService, handlerService, (MPart) savablePart);
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}
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}
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}
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}
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private Object findSavablePart(ISelectionElementEditingPart part){
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Object selectionProvidingPart = part.getSelectionProvidingPart();
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if(selectionProvidingPart instanceof ISaveablePart || selectionProvidingPart instanceof IE4SavablePart || selectionProvidingPart instanceof MPart){
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return selectionProvidingPart;
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}
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else if(selectionProvidingPart instanceof ISelectionElementEditingPart){
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return findSavablePart((ISelectionElementEditingPart) selectionProvidingPart);
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}
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return null;
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}
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private void savePart(EPartService partService, ECommandService commandService, EHandlerService handlerService,
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MPart mPart) {
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if(mPart.getObject() instanceof CompatibilityPart){
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//FIXME E4 remove when fully migrated
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Command command = commandService.getCommand("org.eclipse.ui.file.save");
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ParameterizedCommand parameterizedCommand = ParameterizedCommand.generateCommand(command, Collections.EMPTY_MAP);
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handlerService.executeHandler(parameterizedCommand);
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}
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else{
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partService.savePart(mPart, false);
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}
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}
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@CanExecute
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public boolean canExecute(EPartService partService) {
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return !partService.getDirtyParts().isEmpty();
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}
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}
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