[js] add support for handling Shadow DOM elements

Author: AutomatedTester

javascript/node/selenium-webdriver/lib/command.js

@@ -168,6 +168,11 @@ const Name = {
   GET_ALERT_TEXT: 'getAlertText',
   SET_ALERT_TEXT: 'setAlertValue',
 
+  // Shadow DOM Commands
+  GET_SHADOW_ROOT: 'getShadowRoot',
+  FIND_ELEMENT_FROM_SHADOWROOT: 'findElementFromShadowRoot',
+  FIND_ELEMENTS_FROM_SHADOWROOT: 'findElementsFromShadowRoot',
+
   GET_AVAILABLE_LOG_TYPES: 'getAvailableLogTypes',
   GET_LOG: 'getLog',
   GET_SESSION_LOGS: 'getSessionLogs',

javascript/node/selenium-webdriver/lib/error.js

@@ -39,6 +39,16 @@ class WebDriverError extends Error {
   }
 }
 
+/**
+ * Indicates the shadow root is no longer attached to the DOM
+ */
+class DetachedShadowRootError extends WebDriverError {
+  /** @param {string=} opt_error the error message, if any. */
+  constructor(opt_error) {
+    super(opt_error)
+  }
+}
+
 /**
  * Indicates a {@linkplain ./webdriver.WebElement#click click command} could not
  * completed because the click target is obscured by other elements on the
@@ -201,6 +211,16 @@ class NoSuchElementError extends WebDriverError {
   }
 }
 
+/**
+ * A ShadowRoot could not be located on the element
+ */
+class NoSuchShadowRootError extends WebDriverError {
+  /** @param {string=} opt_error the error message, if any. */
+  constructor(opt_error) {
+    super(opt_error);
+  }
+}
+
 /**
  * A request to switch to a frame could not be satisfied because the frame
  * could not be found.
@@ -420,6 +440,7 @@ const LEGACY_ERROR_CODE_TO_TYPE = new Map([
 
 const ERROR_CODE_TO_TYPE = new Map([
   ['unknown error', WebDriverError],
+  ['detached shadow root', DetachedShadowRootError],
   ['element click intercepted', ElementClickInterceptedError],
   ['element not interactable', ElementNotInteractableError],
   ['element not selectable', ElementNotSelectableError],
@@ -436,6 +457,7 @@ const ERROR_CODE_TO_TYPE = new Map([
   ['no such cookie', NoSuchCookieError],
   ['no such element', NoSuchElementError],
   ['no such frame', NoSuchFrameError],
+  ['no such shadow root', NoSuchShadowRootError],
   ['no such window', NoSuchWindowError],
   ['script timeout', ScriptTimeoutError],
   ['session not created', SessionNotCreatedError],
@@ -569,6 +591,7 @@ module.exports = {
   ErrorCode,
 
   WebDriverError,
+  DetachedShadowRootError,
   ElementClickInterceptedError,
   ElementNotInteractableError,
   ElementNotSelectableError,
@@ -584,6 +607,7 @@ module.exports = {
   NoSuchCookieError,
   NoSuchElementError,
   NoSuchFrameError,
+  NoSuchShadowRootError,
   NoSuchSessionError,
   NoSuchWindowError,
   ScriptTimeoutError,

javascript/node/selenium-webdriver/lib/http.js

@@ -31,7 +31,7 @@ const error = require('./error')
 const logging = require('./logging')
 const promise = require('./promise')
 const { Session } = require('./session')
-const { WebElement } = require('./webdriver')
+const { WebElement, ShadowRoot } = require('./webdriver')
 
 const getAttribute = requireAtom(
   'get-attribute.js',
@@ -63,8 +63,8 @@ function requireAtom(module, bazelTarget) {
       console.log(ex2)
       throw Error(
         `Failed to import atoms module ${module}. If running in dev mode, you` +
-          ` need to run \`bazel build ${bazelTarget}\` from the project` +
-          `root: ${ex}`
+        ` need to run \`bazel build ${bazelTarget}\` from the project` +
+        `root: ${ex}`
       )
     }
   }
@@ -173,7 +173,7 @@ var CommandSpec // eslint-disable-line
 /** @typedef {function(!cmd.Command): !cmd.Command} */
 var CommandTransformer // eslint-disable-line
 
-class InternalTypeError extends TypeError {}
+class InternalTypeError extends TypeError { }
 
 /**
  * @param {!cmd.Command} command The initial command.
@@ -421,6 +421,10 @@ const W3C_COMMAND_MAP = new Map([
   ],
   // print page.
   [cmd.Name.PRINT_PAGE, post('/session/:sessionId/print')],
+  // Shadow Root
+  [cmd.Name.GET_SHADOW_ROOT, get('/session/:sessionId/element/:id/shadow')],
+  [cmd.Name.FIND_ELEMENT_FROM_SHADOWROOT, post('/session/:sessionId/shadow/:id/element')],
+  [cmd.Name.FIND_ELEMENTS_FROM_SHADOWROOT, post('/session/:sessionId/shadow/:id/elements')],
   // Log extensions.
   [cmd.Name.GET_LOG, post('/session/:sessionId/se/log')],
   [cmd.Name.GET_AVAILABLE_LOG_TYPES, get('/session/:sessionId/se/log/types')],
@@ -441,7 +445,7 @@ class Client {
    * @return {!Promise<Response>} A promise that will be fulfilled with the
    *     server's response.
    */
-  send(httpRequest) {} // eslint-disable-line
+  send(httpRequest) { } // eslint-disable-line
 }
 
 /**
@@ -584,7 +588,7 @@ class Executor {
       // No implementations use the `capabilities` key yet...
       let capabilities = value.capabilities || value.value
       return new Session(
-        /** @type {{sessionId: string}} */ (value).sessionId,
+        /** @type {{sessionId: string}} */(value).sessionId,
         capabilities
       )
     }

javascript/node/selenium-webdriver/lib/test/fileserver.js

@@ -102,6 +102,7 @@ const Pages = (function () {
   addPage('unicodeLtrPage', 'utf8/unicode_ltr.html')
   addPage('uploadPage', 'upload.html')
   addPage('veryLargeCanvas', 'veryLargeCanvas.html')
+  addPage('webComponents', 'webComponents.html')
   addPage('xhtmlTestPage', 'xhtmlTest.html')
   addPage('uploadInvisibleTestPage', 'upload_invisible.html')