Pull request #3147: KERNEL-13158: 优化useContext

Merge in VISUAL/fineui from ~GUY/fineui:master to master

* commit 'b7cce8557606cbe143978621d2e7b9023126bb95':
  KERNEL-13158: 优化useContext

src/base/combination/navigation.js

@@ -43,9 +43,10 @@ BI.Navigation = BI.inherit(BI.Widget, {
                 return self.showIndex + v;
             },
             cardCreator: function (v) {
+                BI.Widget.pushContext(self);
                 var card = o.cardCreator(v);
+                BI.Widget.popContext();
                 self.cardMap[v] = card;
-
                 return card;
             },
             afterCardCreated: BI.bind(this.afterCardCreated, this),

src/core/4.widget.js

@@ -903,7 +903,7 @@
 
     BI.useContext = function (inject) {
         // 通过组件找最近的store
-        var vm = BI.Widget.findStore(BI.Widget.current);
+        var vm = BI.Widget.findStore(BI.Widget.current || BI.Widget.context);
         if (vm) {
             if (inject) {
                 if (vm.$$computed && inject in vm.$$computed) {