fix($stickyState): Made equalForKeys compatible with state.ownParams …

…breaking change in UI-Router 0.2.11+

`ownParams` used to be an array, but was changed to an object, then to a ParamSet.  To make ui-router-extras with all 3, check if `keys` is an object and then grab the object's protoKeys

Closes #112

bower.json

@@ -1,6 +1,6 @@
 {
   "name": "ui-router-extras",
-  "version": "0.0.11",
+  "version": "0.0.12-pre1",
   "authors": [
     "Chris Thielen <[email protected]>"
   ],

package.json

@@ -1,7 +1,7 @@
 {
   "author": "Christopher Thielen",
   "name": "ui-router-extras",
-  "version": "0.0.11",
+  "version": "0.0.12-pre1",
   "description": "UI-Router Extras: Sticky states, Future States, Deep State Redirect, Transition promise",
   "homepage": "http://christopherthielen.github.io/ui-router-extras/",
   "dependencies": {},

src/stickyStateProvider.js

@@ -89,6 +89,9 @@ function $StickyStateProvider($stateProvider) {
 
       // Duplicates logic in $state.transitionTo, primarily to find the pivot state (i.e., the "keep" value)
       function equalForKeys(a, b, keys) {
+        if (angular.isObject(keys)) {
+          keys = protoKeys(keys, ["$$keys", "$$values", "$$equals", "$$validates"]);
+        }
         if (!keys) {
           keys = [];
           for (var n in a) keys.push(n); // Used instead of Object.keys() for IE8 compatibility

src/util.js

@@ -66,6 +66,21 @@ function objectKeys(object) {
   return result;
 }
 
+/**
+ * like objectKeys, but includes keys from prototype chain.
+ * @param object the object whose prototypal keys will be returned
+ * @param ignoreKeys an array of keys to ignore
+ */
+// Duplicates code in UI-Router common.js
+function protoKeys(object, ignoreKeys) {
+  var result = [];
+  for (var key in object) {
+    if (!ignoreKeys || ignoreKeys.indexOf(key) === -1)
+      result.push(key);
+  }
+  return result;
+}
+
 // Duplicates code in UI-Router common.js
 function arraySearch(array, value) {
   if (Array.prototype.indexOf) {