Canvas: listen for command/control in selection.

Author: PhaserEditor2D

source/phasereditor/phasereditor.canvas.ui/src/phasereditor/canvas/ui/editors/behaviors/MouseBehavior.java

@@ -169,7 +169,7 @@ private void handleMouseDragged(MouseEvent e) {
 			_zoomPan.handleMouseDragged(e);
 			return;
 		}
-
+		
 		if (e.isPrimaryButtonDown()) {
 
 			if (_dragHandler != null) {

source/phasereditor/phasereditor.canvas.ui/src/phasereditor/canvas/ui/editors/behaviors/SelectionBehavior.java

@@ -143,13 +143,13 @@ void handleMouseReleased(MouseEvent e) {
 		}
 
 		if (isSelected(picked)) {
-			if (e.isControlDown()) {
+			if (e.isShortcutDown()) {
 				removeNodeFromSelection(picked);
 			}
 			return;
 		}
 
-		if (_selection != null && !_selection.isEmpty() && e.isControlDown()) {
+		if (_selection != null && !_selection.isEmpty() && e.isShortcutDown()) {
 			HashSet<Object> selection = new HashSet<>(Arrays.asList(_selection.toArray()));
 			selection.add(picked);
 			setSelection(new StructuredSelection(selection.toArray()));