Function nodeLinkFn

tools/ngui/static/js/lib/angular.js:4291–4412

(childLinkFn, scope, linkNode, $rootElement, boundTranscludeFn)

      function nodeLinkFn(childLinkFn, scope, linkNode, $rootElement, boundTranscludeFn) {
        var attrs, $element, i, ii, linkFn, controller;

        if (compileNode === linkNode) {
          attrs = templateAttrs;
        } else {
          attrs = shallowCopy(templateAttrs, new Attributes(jqLite(linkNode), templateAttrs.$attr));
        }
        $element = attrs.$$element;

        if (newIsolateScopeDirective) {
          var LOCAL_REGEXP = /^\s*([@=&])\s*(\w*)\s*$/;

          var parentScope = scope.$parent || scope;

          forEach(newIsolateScopeDirective.scope, function(definiton, scopeName) {
            var match = definiton.match(LOCAL_REGEXP) || [],
                attrName = match[2]|| scopeName,
                mode = match[1], // @, =, or &
                lastValue,
                parentGet, parentSet;

            scope.$$isolateBindings[scopeName] = mode + attrName;

            switch (mode) {

              case '@': {
                attrs.$observe(attrName, function(value) {
                  scope[scopeName] = value;
                });
                attrs.$$observers[attrName].$$scope = parentScope;
                break;
              }

              case '=': {
                parentGet = $parse(attrs[attrName]);
                parentSet = parentGet.assign || function() {
                  // reset the change, or we will throw this exception on every $digest
                  lastValue = scope[scopeName] = parentGet(parentScope);
                  throw Error(NON_ASSIGNABLE_MODEL_EXPRESSION + attrs[attrName] +
                      ' (directive: ' + newIsolateScopeDirective.name + ')');
                };
                lastValue = scope[scopeName] = parentGet(parentScope);
                scope.$watch(function parentValueWatch() {
                  var parentValue = parentGet(parentScope);

                  if (parentValue !== scope[scopeName]) {
                    // we are out of sync and need to copy
                    if (parentValue !== lastValue) {
                      // parent changed and it has precedence
                      lastValue = scope[scopeName] = parentValue;
                    } else {
                      // if the parent can be assigned then do so
                      parentSet(parentScope, parentValue = lastValue = scope[scopeName]);
                    }
                  }
                  return parentValue;
                });