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// Copyright 2013 Software Freedom Conservancy. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
/**
* @fileoverview Various utilities for working with
* {@link webdriver.CommandExecutor} implementations.
*/
var HttpClient = require('./http').HttpClient,
HttpExecutor = require('./http').Executor,
promise = require('./_base').require('webdriver.promise');
/**
* Wraps a promised {@link webdriver.CommandExecutor}, ensuring no commands
* are executed until the wrapped executor has been fully built.
* @param {!webdriver.promise.Promise.<!webdriver.CommandExecutor>} delegate The
* promised delegate.
* @constructor
* @implements {webdriver.CommandExecutor}
*/
var DeferredExecutor = function(delegate) {
/** @override */
this.execute = function(command, callback) {
delegate.then(function(executor) {
executor.execute(command, callback);
}, callback);
};
};
// PUBLIC API
/**
* Creates a command executor that uses WebDriver's JSON wire protocol.
* @param {(string|!webdriver.promise.Promise.<string>)} url The server's URL,
* or a promise that will resolve to that URL.
* @returns {!webdriver.CommandExecutor} The new command executor.
*/
exports.createExecutor = function(url) {
return new DeferredExecutor(promise.when(url, function(url) {
var client = new HttpClient(url);
return new HttpExecutor(client);
}));
};