Added UMA actions to devices page

chrome/browser/resources/local_discovery/local_discovery.js

 // Copyright 2013 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.
 
 /**
  * Javascript for local_discovery.html, served from chrome://devices/
  * This is used to show discoverable devices near the user as well as
  * cloud devices registered to them.
  *
  * The object defined in this javascript file listens for callbacks from the
@@ skipping 68 matching lines @@
      * @param {boolean} is_mine Whether or not the device is in the 'Registered'
      *    section.
      */
     deviceContainer: function() {
       return $('register-device-list');
     },
     /**
      * Register the device.
      */
     register: function() {
+      recordUmaAction('DevicesPage_RegisterClicked');
       chrome.send('registerDevice', [this.info.service_name]);
       setRegisterPage('register-page-adding1');
     }
   };
 
   /**
    * Returns a textual representation of the number of printers on the network.
    * @return {string} Number of printers on the network as localized string.
    */
   function generateNumberPrintersAvailableText(numberPrinters) {
@@ skipping 36 matching lines @@
     deviceDescription.textContent = description;
     deviceInfo.appendChild(deviceDescription);
 
     var button = document.createElement('button');
     button.textContent = button_text;
     button.addEventListener('click', button_action);
     device_dom_element.appendChild(button);
   }
 
   /**
-   * Hide the register overlay.
+   * Show the register overlay.
    */
   function showRegisterOverlay() {
+    recordUmaAction('DevicesPage_AddPrintersClicked');
     $('register-overlay').classList.add('showing');
     $('overlay').hidden = false;
     uber.invokeMethodOnParent('beginInterceptingEvents');
     setRegisterPage('register-page-choose');
   }
 
   /**
-   * Show the register overlay.
+   * Hide the register overlay.
    */
   function hideRegisterOverlay() {
     $('register-overlay').classList.remove('showing');
     $('overlay').hidden = true;
     uber.invokeMethodOnParent('stopInterceptingEvents');
-    chrome.send('cancelRegistration');
   }
 
   /**
    * Clear a DOM element of all children.
    * @param {HTMLElement} element DOM element to clear.
    */
   function clearElement(element) {
     while (element.firstChild) {
       element.removeChild(element.firstChild);
     }
   }
 
   /**
    * Announce that a registration failed.
    */
   function onRegistrationFailed() {
     setRegisterPage('register-page-error');
+    recordUmaAction('DevicesPage_RegisterFailure');
   }
 
   /**
    * Update UI to reflect that registration has been confirmed on the printer.
    */
   function onRegistrationConfirmedOnPrinter() {
     setRegisterPage('register-page-adding2');
   }
 
   /**
@@ skipping 72 matching lines @@
     }
   }
 
 
   /**
    * Announce that a registration succeeeded.
    */
   function onRegistrationSuccess() {
     hideRegisterOverlay();
     requestPrinterList();
+    recordUmaAction('DevicesPage_RegisterSuccess');
   }
 
   /**
    * Update visibility status for page.
    */
   function updateVisibility() {
     chrome.send('isVisible', [!document.webkitHidden]);
   }
 
   /**
@@ skipping 17 matching lines @@
     clearElement($('cloud-devices'));
     $('cloud-devices-loading').hidden = false;
     chrome.send('requestPrinterList');
   }
 
   /**
    * Go to management page for a cloud device.
    * @param {string} device_id ID of device.
    */
   function manageCloudDevice(device_id) {
+    recordUmaAction('DevicesPage_ManageClicked');
     chrome.send('openCloudPrintURL',
                 [PRINTER_MANAGEMENT_PAGE_PREFIX + device_id]);
   }
 
+  /**
+   * Record an action in UMA.
+   * @param {string} actionDesc The name of the action to be logged.
+   */
+  function recordUmaAction(actionDesc) {
+    chrome.send('metricsHandler:recordAction', [actionDesc]);
+  }
+
+  /**
+   * Cancel the registration.
+   */
+  function cancelRegistration() {
+    hideRegisterOverlay();
+    chrome.send('cancelRegistration');
+    recordUmaAction('DevicesPage_RegisterCancel');
+  }
 
   document.addEventListener('DOMContentLoaded', function() {
     uber.onContentFrameLoaded();
 
     cr.ui.overlay.setupOverlay($('overlay'));
     cr.ui.overlay.globalInitialization();
-    $('overlay').addEventListener('cancelOverlay', hideRegisterOverlay);
+    $('overlay').addEventListener('cancelOverlay', cancelRegistration);
 
     var cancelButtons = document.querySelectorAll('.register-cancel');
     var cancelButtonsLength = cancelButtons.length;
     for (var i = 0; i < cancelButtonsLength; i++) {
-      cancelButtons[i].addEventListener('click', hideRegisterOverlay);
+      cancelButtons[i].addEventListener('click', cancelRegistration);
     }
 
-    $('register-error-exit').addEventListener('click', hideRegisterOverlay);
+    $('register-error-exit').addEventListener('click', cancelRegistration);
 
     $('add-printers-button').addEventListener('click',
                                               showRegisterOverlay);
 
     updateVisibility();
     document.addEventListener('webkitvisibilitychange', updateVisibility,
                               false);
 
     var title = loadTimeData.getString('devicesTitle');
     uber.invokeMethodOnParent('setTitle', {title: title});
 
     chrome.send('start');
+    recordUmaAction('DevicesPage_Opened');
     requestPrinterList();
   });
 
   return {
     onRegistrationSuccess: onRegistrationSuccess,
     onRegistrationFailed: onRegistrationFailed,
     onUnregisteredDeviceUpdate: onUnregisteredDeviceUpdate,
     onRegistrationConfirmedOnPrinter: onRegistrationConfirmedOnPrinter,
     onCloudDeviceListAvailable: onCloudDeviceListAvailable,
     onDeviceCacheFlushed: onDeviceCacheFlushed
   };
 });