Revert 274558 "Move some extensions renderer resources to extens..."

trunk/src/extensions/renderer/resources/utils.js

-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-var createClassWrapper = requireNative('utils').createClassWrapper;
-var schemaRegistry = requireNative('schema_registry');
-var CHECK = requireNative('logging').CHECK;
-var WARNING = requireNative('logging').WARNING;
-
-/**
- * An object forEach. Calls |f| with each (key, value) pair of |obj|, using
- * |self| as the target.
- * @param {Object} obj The object to iterate over.
- * @param {function} f The function to call in each iteration.
- * @param {Object} self The object to use as |this| in each function call.
- */
-function forEach(obj, f, self) {
-  for (var key in obj) {
-    if ($Object.hasOwnProperty(obj, key))
-      $Function.call(f, self, key, obj[key]);
-  }
-}
-
-/**
- * Assuming |array_of_dictionaries| is structured like this:
- * [{id: 1, ... }, {id: 2, ...}, ...], you can use
- * lookup(array_of_dictionaries, 'id', 2) to get the dictionary with id == 2.
- * @param {Array.<Object.<string, ?>>} array_of_dictionaries
- * @param {string} field
- * @param {?} value
- */
-function lookup(array_of_dictionaries, field, value) {
-  var filter = function (dict) {return dict[field] == value;};
-  var matches = array_of_dictionaries.filter(filter);
-  if (matches.length == 0) {
-    return undefined;
-  } else if (matches.length == 1) {
-    return matches[0]
-  } else {
-    throw new Error("Failed lookup of field '" + field + "' with value '" +
-                    value + "'");
-  }
-}
-
-function loadTypeSchema(typeName, defaultSchema) {
-  var parts = $String.split(typeName, '.');
-  if (parts.length == 1) {
-    if (defaultSchema == null) {
-      WARNING('Trying to reference "' + typeName + '" ' +
-              'with neither namespace nor default schema.');
-      return null;
-    }
-    var types = defaultSchema.types;
-  } else {
-    var schemaName = $Array.join($Array.slice(parts, 0, parts.length - 1), '.');
-    var types = schemaRegistry.GetSchema(schemaName).types;
-  }
-  for (var i = 0; i < types.length; ++i) {
-    if (types[i].id == typeName)
-      return types[i];
-  }
-  return null;
-}
-
-/**
- * Takes a private class implementation |cls| and exposes a subset of its
- * methods |functions| and properties |properties| and |readonly| in a public
- * wrapper class that it returns. Within bindings code, you can access the
- * implementation from an instance of the wrapper class using
- * privates(instance).impl, and from the implementation class you can access
- * the wrapper using this.wrapper (or implInstance.wrapper if you have another
- * instance of the implementation class).
- * @param {string} name The name of the exposed wrapper class.
- * @param {Object} cls The class implementation.
- * @param {{functions: ?Array.<string>,
- *          properties: ?Array.<string>,
- *          readonly: ?Array.<string>}} exposed The names of properties on the
- *     implementation class to be exposed. |functions| represents the names of
- *     functions which should be delegated to the implementation; |properties|
- *     are gettable/settable properties and |readonly| are read-only properties.
- */
-function expose(name, cls, exposed) {
-  var publicClass = createClassWrapper(name, cls);
-
-  if ('functions' in exposed) {
-    $Array.forEach(exposed.functions, function(func) {
-      publicClass.prototype[func] = function() {
-        var impl = privates(this).impl;
-        return $Function.apply(impl[func], impl, arguments);
-      };
-    });
-  }
-
-  if ('properties' in exposed) {
-    $Array.forEach(exposed.properties, function(prop) {
-      $Object.defineProperty(publicClass.prototype, prop, {
-        enumerable: true,
-        get: function() {
-          return privates(this).impl[prop];
-        },
-        set: function(value) {
-          var impl = privates(this).impl;
-          delete impl[prop];
-          impl[prop] = value;
-        }
-      });
-    });
-  }
-
-  if ('readonly' in exposed) {
-    $Array.forEach(exposed.readonly, function(readonly) {
-      $Object.defineProperty(publicClass.prototype, readonly, {
-        enumerable: true,
-        get: function() {
-          return privates(this).impl[readonly];
-        },
-      });
-    });
-  }
-
-  return publicClass;
-}
-
-exports.forEach = forEach;
-exports.loadTypeSchema = loadTypeSchema;
-exports.lookup = lookup;
-exports.expose = expose;