| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| /** |
| * Provides the ManagedArgument class used by ManagedClient. |
| */ |
| angular.module('client').factory('ManagedArgument', ['$q', function defineManagedArgument($q) { |
| |
| /** |
| * Object which represents an argument (connection parameter) which may be |
| * changed by the user while the connection is open. |
| * |
| * @constructor |
| * @param {ManagedArgument|Object} [template={}] |
| * The object whose properties should be copied within the new |
| * ManagedArgument. |
| */ |
| var ManagedArgument = function ManagedArgument(template) { |
| |
| // Use empty object by default |
| template = template || {}; |
| |
| /** |
| * The name of the connection parameter. |
| * |
| * @type {String} |
| */ |
| this.name = template.name; |
| |
| /** |
| * The current value of the connection parameter. |
| * |
| * @type {String} |
| */ |
| this.value = template.value; |
| |
| /** |
| * A valid, open output stream which may be used to apply a new value |
| * to the connection parameter. |
| * |
| * @type {Guacamole.OutputStream} |
| */ |
| this.stream = template.stream; |
| |
| }; |
| |
| /** |
| * Requests editable access to a given connection parameter, returning a |
| * promise which is resolved with a ManagedArgument instance that provides |
| * such access if the parameter is indeed editable. |
| * |
| * @param {ManagedClient} managedClient |
| * The ManagedClient instance associated with the connection for which |
| * an editable version of the connection parameter is being retrieved. |
| * |
| * @param {String} name |
| * The name of the connection parameter. |
| * |
| * @param {String} value |
| * The current value of the connection parameter, as received from a |
| * prior, inbound "argv" stream. |
| * |
| * @returns {Promise.<ManagedArgument>} |
| * A promise which is resolved with the new ManagedArgument instance |
| * once the requested parameter has been verified as editable. |
| */ |
| ManagedArgument.getInstance = function getInstance(managedClient, name, value) { |
| |
| var deferred = $q.defer(); |
| |
| // Create internal, fully-populated instance of ManagedArgument, to be |
| // returned only once mutability of the associated connection parameter |
| // has been verified |
| var managedArgument = new ManagedArgument({ |
| name : name, |
| value : value, |
| stream : managedClient.client.createArgumentValueStream('text/plain', name) |
| }); |
| |
| // The connection parameter is editable only if a successful "ack" is |
| // received |
| managedArgument.stream.onack = function ackReceived(status) { |
| if (status.isError()) |
| deferred.reject(status); |
| else |
| deferred.resolve(managedArgument); |
| }; |
| |
| return deferred.promise; |
| |
| }; |
| |
| /** |
| * Sets the given editable argument (connection parameter) to the given |
| * value, updating the behavior of the associated connection in real-time. |
| * If successful, the ManagedArgument provided cannot be used for future |
| * calls to setValue() and must be replaced with a new instance. This |
| * function only has an effect if the new parameter value is different from |
| * the current value. |
| * |
| * @param {ManagedArgument} managedArgument |
| * The ManagedArgument instance associated with the connection |
| * parameter being modified. |
| * |
| * @param {String} value |
| * The new value to assign to the connection parameter. |
| * |
| * @returns {Boolean} |
| * true if the connection parameter was sent and the provided |
| * ManagedArgument instance may no longer be used for future setValue() |
| * calls, false if the connection parameter was NOT sent as it has not |
| * changed. |
| */ |
| ManagedArgument.setValue = function setValue(managedArgument, value) { |
| |
| // Stream new value only if value has changed |
| if (value !== managedArgument.value) { |
| |
| var writer = new Guacamole.StringWriter(managedArgument.stream); |
| writer.sendText(value); |
| writer.sendEnd(); |
| |
| // ManagedArgument instance is no longer usable |
| return true; |
| |
| } |
| |
| // No parameter value change was attempted and the ManagedArgument |
| // instance may be reused |
| return false; |
| |
| }; |
| |
| return ManagedArgument; |
| |
| }]); |