Roll Polymer elements

third_party/polymer/v1_0/components-chromium/iron-location/iron-location-extracted.js

 'use strict';
 
   Polymer({
     is: 'iron-location',
     properties: {
       /**
        * The pathname component of the URL.
        */
       path: {
         type: String,
@@ skipping 173 matching lines @@
       }
       window.history.pushState({}, '', href);
       this.fire('location-changed', {}, {node: window});
       event.preventDefault();
     },
     /**
      * Returns the absolute URL of the link (if any) that this click event
      * is clicking on, if we can and should override the resulting full
      * page navigation. Returns null otherwise.
      *
-     * This method is separated away from _globalOnClick for testability,
-     * as we can't test that a clicked link should have resulted in navigating
-     * away from the test page.
-     *
      * @param {MouseEvent} event .
      * @return {string?} .
      */
     _getSameOriginLinkHref: function(event) {
       // We only care about left-clicks.
       if (event.button !== 0) {
         return null;
       }
       // We don't want modified clicks, where the intent is to open the page
       // in a new tab.
       if (event.metaKey || event.ctrlKey) {
         return null;
       }
       var eventPath = Polymer.dom(event).path;
-      var href = null;
+      var anchor = null;
       for (var i = 0; i < eventPath.length; i++) {
         var element = eventPath[i];
         if (element.tagName === 'A' && element.href) {
-          href = element.href;
+          anchor = element;
           break;
         }
       }
+
       // If there's no link there's nothing to do.
-      if (!href) {
-        return null;
+      if (!anchor) {
+        return;
       }
 
+      // Target blank is a new tab, don't intercept.
+      if (anchor.target === '_blank') {
+        return;
+      }
+      // If the link is for an existing parent frame, don't intercept.
+      if ((anchor.target === '_top' ||
+           anchor.target === '_parent') &&
+          window.top !== window) {
+        return;
+      }
+
+      var href = anchor.href;
+
       // It only makes sense for us to intercept same-origin navigations.
       // pushState/replaceState don't work with cross-origin links.
       var url;
       if (document.baseURI != null) {
         url = new URL(href, /** @type {string} */(document.baseURI));
       } else {
         url = new URL(href);
       }
 
       var origin;
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       }
       // Need to use a full URL in case the containing page has a base URI.
       var fullNormalizedHref = new URL(
           normalizedHref, window.location.href).href;
       return fullNormalizedHref;
     },
     _makeRegExp: function(urlSpaceRegex) {
       return RegExp(urlSpaceRegex);
     }
   });