Function getTrustedAttrContext

test/angular/1.7/angular.js:11029–11059

(nodeName, attrNormalizedName)

    function getTrustedAttrContext(nodeName, attrNormalizedName) {
      if (attrNormalizedName === 'srcdoc') {
        return $sce.HTML;
      }
      // All nodes with src attributes require a RESOURCE_URL value, except for
      // img and various html5 media nodes, which require the MEDIA_URL context.
      if (attrNormalizedName === 'src' || attrNormalizedName === 'ngSrc') {
        if (['img', 'video', 'audio', 'source', 'track'].indexOf(nodeName) === -1) {
          return $sce.RESOURCE_URL;
        }
        return $sce.MEDIA_URL;
      } else if (attrNormalizedName === 'xlinkHref') {
        // Some xlink:href are okay, most aren't
        if (nodeName === 'image') return $sce.MEDIA_URL;
        if (nodeName === 'a') return $sce.URL;
        return $sce.RESOURCE_URL;
      } else if (
          // Formaction
          (nodeName === 'form' && attrNormalizedName === 'action') ||
          // If relative URLs can go where they are not expected to, then
          // all sorts of trust issues can arise.
          (nodeName === 'base' && attrNormalizedName === 'href') ||
          // links can be stylesheets or imports, which can run script in the current origin
          (nodeName === 'link' && attrNormalizedName === 'href')
      ) {
        return $sce.RESOURCE_URL;
      } else if (nodeName === 'a' && (attrNormalizedName === 'href' ||
                                 attrNormalizedName === 'ngHref')) {
        return $sce.URL;
      }
    }

    function getTrustedPropContext(nodeName, propNormalizedName) {
      var prop = propNormalizedName.toLowerCase();