ONOS-3738: implemented F1..F5 key bindings to topology overlay selection.

- added size() function to radio button sets
- removed noisy warning (panel resize when contents not defined)

Change-Id: Id39cffe5c6c9f608b9d9af672b1535610a97f0fc

@@ -240,7 +240,8 @@
         return {
             width: rsetWidth,
             selected: selected,
-            selectedIndex: selectedIndex
+            selectedIndex: selectedIndex,
+            size: function () { return rads.length; }
         }
     }
 

@@ -65,6 +65,13 @@
 
             E: [equalizeMasters, 'Equalize mastership roles'],
 
+            // topology overlay selections
+            F1: function () { ttbs.fnkey(0); },
+            F2: function () { ttbs.fnkey(1); },
+            F3: function () { ttbs.fnkey(2); },
+            F4: function () { ttbs.fnkey(3); },
+            F5: function () { ttbs.fnkey(4); },
+
             esc: handleEscape,
 
             _keyListener: ttbs.keyListener,

@@ -97,7 +97,9 @@
                 $log.warn('adjustHeight: height from top of page not given');
                 return null;
             } else if (!body || !p) {
-                $log.warn('adjustHeight: panel contents are not defined');
+                // panel contents are not defined
+                // this may happen when window is resizing but panel has
+                //   been cleared or removed
                 return null;
             }
 

@@ -270,6 +270,13 @@
         ovRset.selectedIndex(idx);
     }
 
+    // an overlay was selected via Function-Key press
+    function fnkey(idx) {
+        if (idx < ovRset.size() && idx !== ovRset.selectedIndex()) {
+            ovRset.selectedIndex(idx);
+        }
+    }
+
     angular.module('ovTopo')
         .factory('TopoToolbarService',
         ['$log', 'FnService', 'ToolbarService', 'PrefsService',
@@ -289,7 +296,8 @@
                 destroyToolbar: destroyToolbar,
                 keyListener: keyListener,
                 toggleToolbar: toggleToolbar,
-                setDefaultOverlay: setDefaultOverlay
+                setDefaultOverlay: setDefaultOverlay,
+                fnkey: fnkey
             };
         }]);
 }());
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