Update more-routing for md-settings

third_party/polymer/v0_8/components/more-routing/route.html

Index: third_party/polymer/v0_8/components/more-routing/route.html
diff --git a/third_party/polymer/v0_8/components/more-routing/route.html b/third_party/polymer/v0_8/components/more-routing/route.html
index ea9f344bbf11534b0abef09a1f05e665fe7dc9bc..e53ccbcc50f0ef2e31c6623e5dbe51492fd700a1 100644
--- a/third_party/polymer/v0_8/components/more-routing/route.html
+++ b/third_party/polymer/v0_8/components/more-routing/route.html
@@ -6,7 +6,8 @@ The complete set of contributors may be found at http://polymer.github.io/CONTRI
 Code distributed by Google as part of the polymer project is also
 subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
 -->
-<link rel="import" href="../observe-js/observe-js.html">
+<link rel="import" href="emitter.html">
+<link rel="import" href="params.html">
 
 <script>
 (function(scope) {
@@ -24,6 +25,9 @@ var SEPARATOR_CLEANER = /\/\/+/g;
  * TODO(nevir): Docs.
  */
 function Route(path, parent) {
+  // For `MoreRouting.Emitter`; Emits changes for `active`.
+  this.__listeners = [];
+
   this.path     = path;
   this.parent   = parent;
   this.fullPath = path;
@@ -31,6 +35,13 @@ function Route(path, parent) {
   this.active   = false;
   this.driver   = null;
 
+  var params = MoreRouting.Params(namedParams(this.compiled), this.parent && this.parent.params);
+  params.__subscribe(this._navigateToParams.bind(this));
+  Object.defineProperty(this, 'params', {
+    get: function() { return params; },
+    set: function() { throw new Error('Route#params cannot be overwritten'); },
+  });
+
   this.parts    = [];
   this.children = [];
 
@@ -39,20 +50,27 @@ function Route(path, parent) {
   // To make data "binding" easy, `Route` guarantees that `params` will always
   // be the same object; just make a reference to it.
   if (this.parent) {
-    this.params = Object.create(this.parent.params);
     this.parent.children.push(this);
     this.fullPath  = this.parent.fullPath + this.fullPath;
     this.depth     = this.parent.depth + this.compiled.length;
     this.numParams = this.parent.numParams + countParams(this.compiled);
   } else {
-    this.params    = {};
     this.depth     = this.compiled.length;
     this.numParams = countParams(this.compiled);
   }
-
-  this._paramObserver = new ObjectObserver(this.params);
-  this._paramObserver.open(this._navigateToParams.bind(this));
 }
+Route.prototype = Object.create(MoreRouting.Emitter);
+
+Object.defineProperty(Route.prototype, 'active', {
+  get: function() {
+    return this._active;
+  },
+  set: function(value) {
+    if (value !== this._active);
+    this._active = value;
+    this.__notify('active', value);
+  },
+});
 
 Route.isPath = function isPath(pathOrName) {
   return pathOrName.indexOf(PART_SEPARATOR) === 0;
@@ -125,6 +143,10 @@ Route.prototype.partsForParams = function partsForParams(params, silent) {
 Route.prototype.processPathParts = function processPathParts(parts) {
   this.parts  = parts;
   this.active = this.matchesPathParts(parts);
+
+  // We don't want to notify of these changes; they'd be no-op noise.
+  this.params.__silent = true;
+
   if (this.active) {
     var keys = Object.keys(this.params);
     for (var i = 0; i < keys.length; i++) {
@@ -140,7 +162,8 @@ Route.prototype.processPathParts = function processPathParts(parts) {
       this.params[key] = undefined;
     }
   }
-  this._paramObserver.discardChanges();
+
+  delete this.params.__silent;
 };
 
 Route.prototype.matchesPathParts = function matchesPathParts(parts) {
@@ -190,5 +213,14 @@ function countParams(compiled) {
   }, 0);
 }
 
+function namedParams(compiled) {
+  var result = [];
+  compiled.forEach(function(part) {
+    if (part.type === 'static') return;
+    result.push(part.name);
+  });
+  return result;
+}
+
 })(window);
 </script>