even more lazy: defer template lookup and style collection until fini…

…sh register time.

polymer.html

@@ -30,13 +30,14 @@
       this._prepIs();
       // factory
       this._prepConstructor();
-      // template
-      this._prepTemplate();
       // styles
       this._prepStyles();
     },
 
     _finishRegisterFeatures: function() {
+      // template
+      this._prepTemplate();
+      // style shimming
       this._prepShimStyles();
       // template markup
       this._prepAnnotations();

src/standard/styling.html

@@ -36,24 +36,21 @@
       },
 
       _prepStyles: function() {
-        if (this._encapsulateStyle === undefined) {
-          this._encapsulateStyle = !nativeShadow &&
-            Boolean(this._template);
-        }
-        if (this._template) {
-          this._styles = this._collectStyles();
-          // under shady dom we always output a shimmed style (which may be 
-          // empty) so that other dynamic stylesheets can always be placed 
-          // after the element's main stylesheet. 
-          // This helps ensure element styles are always in registration order.
-          if (this._styles.length && !nativeShadow) {
-            this._scopeStyle = styleUtil.applyStylePlaceHolder(this.is);
-          }
+        // under shady dom we always output a shimmed style (which may be 
+        // empty) so that other dynamic stylesheets can always be placed 
+        // after the element's main stylesheet. 
+        // This helps ensure element styles are always in registration order.
+        if (!nativeShadow) {
+          this._scopeStyle = styleUtil.applyStylePlaceHolder(this.is);
         }
       },
 
       _prepShimStyles: function() {
         if (this._template) {
+          if (this._encapsulateStyle === undefined) {
+            this._encapsulateStyle = !nativeShadow;
+          }
+          this._styles = this._collectStyles();
           // calculate shimmed styles (we must always do this as it
           // stores shimmed style data in the css rules for later use)
           var cssText = styleTransformer.elementStyles(this);