bundles/org.simantics.fileimport.ui/src/org/simantics/fileimport/ui/ImportFileHandler.java

   1 package org.simantics.fileimport.ui;
   2
   3 import java.nio.file.Paths;
   4 import java.util.Map;
   5 import java.util.Optional;
   6 import java.util.function.Consumer;
   7
   8 import javax.inject.Named;
   9
  10 import org.eclipse.core.runtime.IAdaptable;
  11 import org.eclipse.e4.core.di.annotations.CanExecute;
  12 import org.eclipse.e4.core.di.annotations.Execute;
  13 import org.eclipse.e4.ui.services.IServiceConstants;
  14 import org.eclipse.jface.viewers.ISelection;
  15 import org.eclipse.jface.viewers.StructuredSelection;
  16 import org.eclipse.swt.SWT;
  17 import org.eclipse.swt.widgets.FileDialog;
  18 import org.eclipse.swt.widgets.Shell;
  19 import org.simantics.db.Resource;
  20 import org.simantics.fileimport.FileImportService;
  21 import org.slf4j.Logger;
  22 import org.slf4j.LoggerFactory;
  23
  24 public class ImportFileHandler {
  25
  26     private static final Logger LOGGER = LoggerFactory.getLogger(ImportFileHandler.class);
  27
  28     @CanExecute
  29     public boolean canExecute() {
  30         return !FileImportService.supportedExtensionsWithFilters().isEmpty();
  31     }
  32
  33     @Execute
  34     public void execute(@Named(IServiceConstants.ACTIVE_SELECTION) ISelection selection,
  35                 @Named(IServiceConstants.ACTIVE_SHELL) Shell shell) {
  36         Map<String, String> extensions = FileImportService.supportedExtensionsWithFilters();
  37         String[] filterExtensions = (String[]) extensions.keySet().toArray(new String[extensions.keySet().size()]);
  38         String[] filterNames = (String[]) extensions.values().toArray(new String[extensions.values().size()]);
  39
  40         // Sanity check
  41         for (int i = 0; i < filterExtensions.length; i++) {
  42             String extension = filterExtensions[i];
  43             if (!extension.startsWith("*.")) { //$NON-NLS-1$
  44                 System.err.println("Invalid extension filter provied: " + extension); //$NON-NLS-1$
  45             }
  46         }
  47
  48         FileDialog dialog = new FileDialog(shell, SWT.OPEN);
  49         dialog.setText(Messages.ImportFileHandler_ChooseFile);
  50         dialog.setFilterExtensions(filterExtensions);
  51         dialog.setFilterNames(filterNames);
  52         final String fileName = dialog.open();
  53         if (fileName == null)
  54             return;
  55
  56         Resource selectedResource = null;
  57         try {
  58                 if(selection instanceof StructuredSelection) {
  59                         StructuredSelection structuredSelection = (StructuredSelection)selection;
  60                         Object elem = structuredSelection.getFirstElement();
  61                         IAdaptable a = (IAdaptable)elem;
  62                         selectedResource = a.getAdapter(Resource.class);
  63                 }
  64         } catch(NullPointerException | ClassCastException npe) {
  65                 LOGGER.warn("Failed to find selection, passing null to file importer", npe); //$NON-NLS-1$
  66         }
  67
  68         FileImportService.performFileImport(Paths.get(fileName), Optional.of(selectedResource), Optional.of((Consumer<Throwable>) t -> {
  69             LOGGER.error("Could not import file " + fileName, t); //$NON-NLS-1$
  70         }));
  71     }
  72 }