From 1a8ace3d8ad1a98609b9156b77f1c6a25dc53760 Mon Sep 17 00:00:00 2001
From: "Scott J. Miles" <sjmiles@google.com>
Date: Wed, 18 Dec 2013 19:28:36 -0800
Subject: [PATCH] support combining names in observe block (e.g. observe { 'foo
 bar baz': 'stuffChanged'})

---
 src/declaration/properties.js | 22 +++++++++++++++++++++-
 src/declaration/prototype.js  |  1 +
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/src/declaration/properties.js b/src/declaration/properties.js
index 4345d88..ac5f50c 100644
--- a/src/declaration/properties.js
+++ b/src/declaration/properties.js
@@ -9,6 +9,7 @@
 
   var properties = {
     inferObservers: function(prototype) {
+      // called before prototype.observe is chained to inherited object
       var observe = prototype.observe, property;
       for (var n in prototype) {
         if (n.slice(-7) === 'Changed') {
@@ -19,13 +20,32 @@
           observe[property] = observe[property] || n;
         }
       }
+      this.explodeObservers(prototype);
+    },
+    explodeObservers: function(prototype) {
+      // called before prototype.observe is chained to inherited object
+      var o = prototype.observe;
+      if (o) {
+        var exploded = {};
+        for (var n in o) {
+          var names = n.split(' ');
+          for (var i=0, ni; ni=names[i]; i++) {
+            exploded[ni] = o[n];
+          }
+        }
+        prototype.observe = exploded;
+      }
     },
     optimizePropertyMaps: function(prototype) {
       if (prototype.observe) {
         // construct name list
         var a = prototype._observeNames = [];
         for (var n in prototype.observe) {
-          a.push(n);
+          var names = n.split(' ');
+          for (var i=0, ni; ni=names[i]; i++) {
+            a.push(ni);
+          }
+          //a.push(n);
         }
       }
       if (prototype.publish) {
diff --git a/src/declaration/prototype.js b/src/declaration/prototype.js
index e638d1d..b4a5cb6 100644
--- a/src/declaration/prototype.js
+++ b/src/declaration/prototype.js
@@ -201,6 +201,7 @@
     }
   };
 
+  // implementation of 'chainObject' depends on support for __proto__
   if (Object.__proto__) {
     prototype.chainObject = function(object, inherited) {
       if (object && inherited && object !== inherited) {