remoting/webapp/crd/js/paired_client_manager.js

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 /**
   6  * @fileoverview
   7  * Dialog for showing the list of clients that are paired with this host.
   8  */
   9
  10 'use strict';
  11
  12 /** @suppress {duplicate} */
  13 var remoting = remoting || {};
  14
  15 /**
  16  * Extract the appropriate fields from the input parameter, if present. Use the
  17  * isValid() method to determine whether or not a valid paired client instance
  18  * was provided.
  19  *
  20  * @param {Object} pairedClient The paired client, as returned by the native
  21  *     host instance.
  22  * @constructor
  23  */
  24 remoting.PairedClient = function(pairedClient) {
  25   if (!pairedClient || typeof(pairedClient) != 'object') {
  26     return;
  27   }
  28
  29   this.clientId = /** @type {string} */ (pairedClient['clientId']);
  30   this.clientName = /** @type {string} */ (pairedClient['clientName']);
  31   this.createdTime = /** @type {number} */ (pairedClient['createdTime']);
  32
  33   /** @type {Element} */
  34   this.tableRow = null;
  35   /** @type {Element} */
  36   this.deleteButton = null;
  37 };
  38
  39 /**
  40  * Create the DOM elements representing this client in the paired client
  41  * manager dialog.
  42  *
  43  * @param {remoting.PairedClientManager} parent The paired client manager
  44  *     dialog containing this row.
  45  * @param {Element} tbody The <tbody> element to which to append the row.
  46  */
  47 remoting.PairedClient.prototype.createDom = function(parent, tbody) {
  48   this.tableRow = document.createElement('tr');
  49   var td = document.createElement('td');
  50   td.innerText = new Date(this.createdTime).toLocaleDateString();
  51   this.tableRow.appendChild(td);
  52   td = document.createElement('td');
  53   td.innerText = this.clientName;
  54   this.tableRow.appendChild(td);
  55   td = document.createElement('td');
  56   this.deleteButton = document.createElement('a');
  57   this.deleteButton.href = '#';
  58   this.deleteButton.innerText = chrome.i18n.getMessage(
  59       /*i18n-content*/'DELETE_PAIRED_CLIENT');
  60   this.deleteButton.id = 'delete-client-' + this.clientId;
  61   this.deleteButton.addEventListener(
  62       'click',
  63       parent.deletePairedClient.bind(parent, this),
  64       false);
  65   td.appendChild(this.deleteButton);
  66   this.tableRow.appendChild(td);
  67   tbody.appendChild(this.tableRow);
  68 };
  69
  70 /**
  71  * Show or hide the "Delete" button for this row.
  72  *
  73  * @param {boolean} show True to show the button; false to hide it.
  74  */
  75 remoting.PairedClient.prototype.showButton = function(show) {
  76   this.deleteButton.hidden = !show;
  77 };
  78
  79 /**
  80  * @return {boolean} True if the constructor parameter was a well-formed
  81  *     paired client instance.
  82  */
  83 remoting.PairedClient.prototype.isValid = function() {
  84   return typeof(this.clientId) == 'string' &&
  85          typeof(this.clientName) == 'string' &&
  86          typeof(this.createdTime) == 'number';
  87 };
  88
  89 /**
  90  * Converts a raw object to an array of PairedClient instances. Returns null if
  91  * the input object is incorrectly formatted.
  92  *
  93  * @param {*} pairedClients The object to convert.
  94  * @return {Array<remoting.PairedClient>} The converted result.
  95  */
  96 remoting.PairedClient.convertToPairedClientArray = function(pairedClients) {
  97   if (!(pairedClients instanceof Array)) {
  98     console.error('pairedClients is not an Array:', pairedClients);
  99     return null;
 100   }
 101
 102   var result = [];
 103   for (var i = 0; i < pairedClients.length; i++) {
 104     var pairedClient = new remoting.PairedClient(pairedClients[i]);
 105     if (!pairedClient.isValid()) {
 106       console.error('pairedClient[' + i + '] has incorrect format:',
 107                     /** @type {*} */(pairedClients[i]));
 108       return null;
 109     }
 110     result.push(pairedClient);
 111   }
 112   return result;
 113 }
 114
 115 /**
 116  * @param {remoting.HostController} hostController
 117  * @param {HTMLElement} listContainer HTML <div> to contain the list of paired
 118  *     clients.
 119  * @param {HTMLElement} message HTML <div> containing the message notifying
 120  *     the user that clients are paired and containing the link to open the
 121  *     dialog.
 122  * @param {HTMLElement} deleteAllButton HTML <button> inititating the "delete
 123  *     all" action.
 124  * @param {HTMLElement} closeButton HTML <button> to close the dialog.
 125  * @param {HTMLElement} noPairedClients HTML <div> containing a message shown
 126  *     when all clients have been deleted.
 127  * @param {HTMLElement} workingSpinner HTML element containing a spinner
 128  *     graphic shown while a deletion is in progress.
 129  * @param {HTMLElement} errorDiv HTML <div> containing an error message shown
 130  *     if a delete operation fails.
 131  * @constructor
 132  */
 133 remoting.PairedClientManager = function(hostController, listContainer, message,
 134                                         deleteAllButton, closeButton,
 135                                         noPairedClients, workingSpinner,
 136                                         errorDiv) {
 137   /**
 138    * @private
 139    */
 140   this.hostController_ = hostController;
 141   /**
 142    * @private
 143    */
 144   this.message_ = message;
 145   /**
 146    * @private
 147    */
 148   this.deleteAllButton_ = deleteAllButton;
 149   /**
 150    * @private
 151    */
 152   this.closeButton_ = closeButton;
 153   /**
 154    * @private
 155    */
 156   this.noPairedClients_ = noPairedClients;
 157   /**
 158    * @private
 159    */
 160   this.workingSpinner_ = workingSpinner;
 161   /**
 162    * @private
 163    */
 164   this.errorDiv_ = errorDiv;
 165   /**
 166    * @type {Element}
 167    * @private
 168    */
 169   this.clientRows_ = listContainer.querySelector('tbody');
 170   /**
 171    * @type {Array<remoting.PairedClient>}
 172    */
 173   this.pairedClients_ = [];
 174
 175   this.deleteAllButton_.addEventListener('click',
 176                                          this.deleteAll_.bind(this),
 177                                          false);
 178 };
 179
 180 /**
 181  * Populate the dialog with the list of paired clients and show or hide the
 182  * message as appropriate.
 183  *
 184  * @param {*} pairedClients The list of paired clients as returned by the
 185  *     native host component.
 186  * @return {void} Nothing.
 187  */
 188 remoting.PairedClientManager.prototype.setPairedClients =
 189     function(pairedClients) {
 190   // Reset table.
 191   while (this.clientRows_.lastChild) {
 192     this.clientRows_.removeChild(this.clientRows_.lastChild);
 193   }
 194
 195   this.pairedClients_ =
 196     remoting.PairedClient.convertToPairedClientArray(pairedClients);
 197   for (var i = 0; i < this.pairedClients_.length; ++i) {
 198     var client = this.pairedClients_[i];
 199     client.createDom(this, this.clientRows_);
 200   }
 201
 202   // Show or hide the "this computer has paired clients" message.
 203   this.setWorking_(false)
 204 };
 205
 206 /**
 207  * Enter or leave "working" mode. This indicates to the user that a delete
 208  * operation is in progress. All dialog UI is disabled until it completes.
 209  *
 210  * @param {boolean} working True to enter "working" mode; false to leave it.
 211  * @private
 212  */
 213 remoting.PairedClientManager.prototype.setWorking_ = function(working) {
 214   var hasPairedClients = (this.pairedClients_.length != 0);
 215   for (var i = 0; i < this.pairedClients_.length; ++i) {
 216     this.pairedClients_[i].showButton(!working);
 217   }
 218   this.closeButton_.disabled = working;
 219   this.workingSpinner_.hidden = !working;
 220   this.errorDiv_.hidden = true;
 221   this.message_.hidden = !hasPairedClients;
 222   this.deleteAllButton_.disabled = working || !hasPairedClients;
 223   this.noPairedClients_.hidden = hasPairedClients;
 224 };
 225
 226 /**
 227  * Error callback for delete operations.
 228  *
 229  * @param {!remoting.Error} error The error message.
 230  * @private
 231  */
 232 remoting.PairedClientManager.prototype.onError_ = function(error) {
 233   this.setWorking_(false);
 234   l10n.localizeElementFromTag(this.errorDiv_, error.getTag());
 235   this.errorDiv_.hidden = false;
 236 };
 237
 238 /**
 239  * Delete a single paired client.
 240  *
 241  * @param {remoting.PairedClient} client The pairing to delete.
 242  */
 243 remoting.PairedClientManager.prototype.deletePairedClient = function(client) {
 244   this.setWorking_(true);
 245   this.hostController_.deletePairedClient(client.clientId,
 246       this.setWorking_.bind(this, false),
 247       this.onError_.bind(this));
 248   this.clientRows_.removeChild(client.tableRow);
 249   for (var i = 0; i < this.pairedClients_.length; ++i) {
 250     if (this.pairedClients_[i] == client) {
 251       this.pairedClients_.splice(i, 1);
 252       break;
 253     }
 254   }
 255 };
 256
 257 /**
 258  * Delete all paired clients.
 259  *
 260  * @private
 261  */
 262 remoting.PairedClientManager.prototype.deleteAll_ = function() {
 263   this.setWorking_(true);
 264   this.hostController_.clearPairedClients(
 265       this.setWorking_.bind(this, false),
 266       this.onError_.bind(this));
 267
 268   while (this.clientRows_.lastChild) {
 269     this.clientRows_.removeChild(this.clientRows_.lastChild);
 270   }
 271   this.pairedClients_ = [];
 272 };
 273
 274 /**
 275  * Get the id of the first paired client for testing.
 276  *
 277  * @private
 278  * @return {string} The client id of the first paired client in the list.
 279  */
 280 remoting.PairedClientManager.prototype.getFirstClientIdForTesting_ =
 281     function() {
 282   return this.pairedClients_.length > 0 ? this.pairedClients_[0].clientId : '';
 283 };
 284
 285
 286 /** @type {remoting.PairedClientManager} */
 287 remoting.pairedClientManager = null;