* fixed annoying "selection instead of drag" behaviour of sfv table

source/net/sourceforge/filebot/ui/panel/sfv/SfvTable.java

@@ -2,9 +2,14 @@
 package net.sourceforge.filebot.ui.panel.sfv;
 
 
+import java.awt.dnd.DnDConstants;
+import java.awt.event.MouseEvent;
+
 import javax.swing.JTable;
 import javax.swing.ListSelectionModel;
+import javax.swing.event.MouseInputListener;
 import javax.swing.event.TableModelEvent;
+import javax.swing.plaf.basic.BasicTableUI;
 import javax.swing.table.TableColumn;
 import javax.swing.table.TableModel;
 
@@ -40,6 +45,8 @@ class SfvTable extends JTable {
 		setTransferHandler(new DefaultTransferHandler(transferablePolicy, exportHandler));
 		setDragEnabled(true);
 		
+		setUI(new DragDropRowTableUI());
+		
 		setDefaultRenderer(String.class, new FileNameTableCellRenderer());
 		setDefaultRenderer(ChecksumRow.State.class, new StateIconTableCellRenderer());
 		setDefaultRenderer(Checksum.class, new ChecksumTableCellRenderer());
@@ -111,16 +118,46 @@ class SfvTable extends JTable {
 
 	@Override
 	public void tableChanged(TableModelEvent e) {
-		// only request repaint when progress changes, or selection will go haywire
+		// only request repaint when progress changes. Selection will go haywire if you don't.
 		if (e.getType() == ChecksumTableModelEvent.CHECKSUM_PROGRESS) {
 			repaint();
-		} else {
+			return;
-			super.tableChanged(e);
+		}
 		
 		if (e.getType() == TableModelEvent.DELETE) {
-				// remove cancelled task from queue
+			// remove cancelled tasks from queue
 			checksumComputationService.purge();
 		}
+		
+		super.tableChanged(e);
+		
+	}
+	
+	
+	/**
+	 * When trying to drag a row of a multi-select JTable, it will start selecting rows instead
+	 * of initiating a drag. This TableUI will give the JTable proper dnd behaviour.
+	 */
+	private class DragDropRowTableUI extends BasicTableUI {
+		
+		@Override
+		protected MouseInputListener createMouseInputListener() {
+			return new DragDropRowMouseInputHandler();
+		}
+		
+		
+		private class DragDropRowMouseInputHandler extends MouseInputHandler {
+			
+			@Override
+			public void mouseDragged(MouseEvent e) {
+				// Only do special handling if we are drag enabled with multiple selection
+				if (table.getDragEnabled() && table.getSelectionModel().getSelectionMode() == ListSelectionModel.MULTIPLE_INTERVAL_SELECTION) {
+					table.getTransferHandler().exportAsDrag(table, e, DnDConstants.ACTION_COPY);
+				} else {
+					super.mouseDragged(e);
 				}
 			}
+		}
+	}
+	
 }

source/net/sourceforge/filebot/ui/transfer/TransferablePolicy.java

@@ -19,38 +19,9 @@ public abstract class TransferablePolicy implements ImportHandler {
 	public abstract void handleTransferable(Transferable tr, TransferAction action);
 	
 
-	public static enum TransferAction {
-		PUT(TransferHandler.MOVE),
-		ADD(TransferHandler.COPY),
-		LINK(TransferHandler.LINK);
-		
-		private final int dndConstant;
-		
-		
-		private TransferAction(int dndConstant) {
-			this.dndConstant = dndConstant;
-		}
-		
-
-		public int getDnDConstant() {
-			return dndConstant;
-		}
-		
-
-		public static TransferAction fromDnDConstant(int dndConstant) {
-			for (TransferAction action : values()) {
-				if (dndConstant == action.dndConstant)
-					return action;
-			}
-			
-			throw new IllegalArgumentException("Unsupported dndConstant: " + dndConstant);
-		}
-		
-	}
-	
-	
 	@Override
 	public boolean canImport(TransferSupport support) {
+		
 		if (support.isDrop())
 			support.setShowDropLocation(false);
 		
@@ -93,4 +64,34 @@ public abstract class TransferablePolicy implements ImportHandler {
 		return TransferAction.PUT;
 	}
 	
+	
+	public static enum TransferAction {
+		PUT(TransferHandler.MOVE),
+		ADD(TransferHandler.COPY),
+		LINK(TransferHandler.LINK);
+		
+		private final int dndConstant;
+		
+		
+		private TransferAction(int dndConstant) {
+			this.dndConstant = dndConstant;
+		}
+		
+
+		public int getDnDConstant() {
+			return dndConstant;
+		}
+		
+
+		public static TransferAction fromDnDConstant(int dndConstant) {
+			for (TransferAction action : values()) {
+				if (dndConstant == action.dndConstant)
+					return action;
+			}
+			
+			throw new IllegalArgumentException("Unsupported dndConstant: " + dndConstant);
+		}
+		
+	}
+	
 }