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  1. JDK
  2. JDK-8123142

TableView makes multiple selection drags difficult

    Details

    • Type: Bug
    • Status: Closed
    • Priority: P3
    • Resolution: Fixed
    • Affects Version/s: 8
    • Fix Version/s: 8
    • Component/s: javafx
    • Environment:

      Java 1.8.0ea b92 Linux and Windows

      Description

      When I try to initiate a multiple selection drag gesture on a ListView it works as expected. I can use Shift or Ctrl to multiselect and then click and drag. The drag gesture starts with all my items still selected.

      When I try the same thing with a TableView my multiple selection is lost as soon as I click to start my drag gesture. The only way I can make it work is to start the drag gesture at the same time as I Shift select my multiple items.

      Run the following test code and try to initiate a drag with multiple rows selected:

      ************************************************************
      import java.util.Iterator;
      import java.util.List;

      import javafx.application.Application;
      import javafx.beans.property.ReadOnlyStringWrapper;
      import javafx.beans.value.ObservableValue;
      import javafx.event.EventHandler;
      import javafx.scene.Scene;
      import javafx.scene.control.SelectionMode;
      import javafx.scene.control.TableColumn;
      import javafx.scene.control.TableColumn.CellDataFeatures;
      import javafx.scene.control.TableView;
      import javafx.scene.input.ClipboardContent;
      import javafx.scene.input.DataFormat;
      import javafx.scene.input.Dragboard;
      import javafx.scene.input.MouseEvent;
      import javafx.scene.input.TransferMode;
      import javafx.scene.layout.StackPane;
      import javafx.stage.Stage;
      import javafx.util.Callback;

      public class TableBlankCells extends Application {

         @Override public void start(Stage primaryStage) {
         
            final TableView<String> table = new TableView<>();
            final TableColumn<String, String> column1 = new TableColumn<>("Column 1");
            column1.setCellValueFactory(new Callback<CellDataFeatures<String,String>,
             ObservableValue<String>>() {
             public ObservableValue<String> call(CellDataFeatures<String, String> p){
             return new ReadOnlyStringWrapper(p.getValue());
             }
      });
            
            column1.setPrefWidth( 200 );
            table.getColumns().add( column1 );
            table.getItems().addAll("one", "two", "three", "four");
            table.getSelectionModel().setSelectionMode(SelectionMode.MULTIPLE);
            
            table.setOnDragDetected(new EventHandler<MouseEvent>() {
             @Override public void handle(MouseEvent event) {
             List<String> strings = table.getSelectionModel().getSelectedItems();
             if ( !strings.isEmpty() ) {
             Dragboard db = table.startDragAndDrop(TransferMode.COPY);
             ClipboardContent content = new ClipboardContent();
             StringBuilder sb = new StringBuilder();
             for ( Iterator<String> it = strings.iterator(); it.hasNext(); ){
             sb.append( it.next() );
             if ( it.hasNext() ) {
             sb.append(", ");
             }
             }
             content.put(DataFormat.PLAIN_TEXT, sb.toString());
             db.setContent(content);
             event.consume();
             }
             }
      });
             
            primaryStage.setScene( new Scene(new StackPane(table)) );
            primaryStage.show();
         }
          
         public static void main(String[] args) {
          launch(args);
         }
         
          
      }

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            • Assignee:
              jgiles Jonathan Giles
              Reporter:
              csmithjfx Charles Smith (Inactive)
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              • Due:
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                Updated:
                Resolved:
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