add doc comments to separate shortcut detection

Author: stoecker

src/main/java/org/openstreetmap/josm/plugins/mapillary/gui/dialog/ImageNavigationDialog.java

@@ -37,20 +37,28 @@
  */
 public class ImageNavigationDialog extends ToggleDialog
     implements LayerManager.LayerChangeListener, IGeoImageLayer.ImageChangeListener {
+    /* Shortcut for image navigation: forward */
     private static final Shortcut FORWARD = Shortcut.registerShortcut("mapillary:image_navigation:forward",
         tr("Mapillary: Image Navigation: Forward"), Shortcut.NONE, KeyEvent.CHAR_UNDEFINED);
+    /* Shortcut for image navigation: left */
     private static final Shortcut LEFT = Shortcut.registerShortcut("mapillary:image_navigation:left",
         tr("Mapillary: Image Navigation: Left"), Shortcut.NONE, KeyEvent.CHAR_UNDEFINED);
+    /* Shortcut for image navigation: right */
     private static final Shortcut RIGHT = Shortcut.registerShortcut("mapillary:image_navigation:right",
         tr("Mapillary: Image Navigation: Right"), Shortcut.NONE, KeyEvent.CHAR_UNDEFINED);
+    /* Shortcut for image navigation: turn left */
     private static final Shortcut TURN_LEFT = Shortcut.registerShortcut("mapillary:image_navigation:turn_left",
         tr("Mapillary: Image Navigation: Turn Left"), Shortcut.NONE, KeyEvent.CHAR_UNDEFINED);
+    /* Shortcut for image navigation: turn right */
     private static final Shortcut TURN_RIGHT = Shortcut.registerShortcut("mapillary:image_navigation:turn_right",
         tr("Mapillary: Image Navigation: Turn Right"), Shortcut.NONE, KeyEvent.CHAR_UNDEFINED);
+    /* Shortcut for image navigation: reverse */
     private static final Shortcut U_TURN = Shortcut.registerShortcut("mapillary:image_navigation:reverse",
         tr("Mapillary: Image Navigation: Reverse"), Shortcut.NONE, KeyEvent.CHAR_UNDEFINED);
+    /* Shortcut for image navigation: back */
     private static final Shortcut BACK = Shortcut.registerShortcut("mapillary:image_navigation:back",
         tr("Mapillary: Image Navigation: Back"), Shortcut.NONE, KeyEvent.CHAR_UNDEFINED);
+    /* Shortcut for image navigation: 360deg panoramic */
     private static final Shortcut PANO = Shortcut.registerShortcut("mapillary:image_navigation:pano",
         tr("Mapillary: Image Navigation: 360 panoramic"), Shortcut.NONE, KeyEvent.CHAR_UNDEFINED);
     private ImageNavigation imageNavigation;