third_party/polymer/components-chromium/core-focusable/polymer-mixin.js

   1 Polymer.mixin2 = function(prototype, mixin) {
   2
   3   // adds a single mixin to prototype
   4
   5   if (mixin.mixinPublish) {
   6     prototype.publish = prototype.publish || {};
   7     Polymer.mixin(prototype.publish, mixin.mixinPublish);
   8   }
   9
  10   if (mixin.mixinDelegates) {
  11     prototype.eventDelegates = prototype.eventDelegates || {};
  12     for (var e in mixin.mixinDelegates) {
  13       if (!prototype.eventDelegates[e]) {
  14         prototype.eventDelegates[e] = mixin.mixinDelegates[e];
  15       }
  16     }
  17   }
  18
  19   if (mixin.mixinObserve) {
  20     prototype.observe = prototype.observe || {};
  21     for (var o in mixin.mixinObserve) {
  22       if (!prototype.observe[o] && !prototype[o + 'Changed']) {
  23         prototype.observe[o] = mixin.mixinObserve[o];
  24       }
  25     }
  26   }
  27
  28   Polymer.mixin(prototype, mixin);
  29
  30   delete prototype.mixinPublish;
  31   delete prototype.mixinDelegates;
  32   delete prototype.mixinObserve;
  33
  34   return prototype;
  35 };