<webview>-based Signin Page: Navigate on Drag and Drop

chrome/browser/resources/gaia_auth_host/authenticator.js

 // Copyright 2014 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.
 
 /**
  * @fileoverview An UI component to authenciate to Chrome. The component hosts
  * IdP web pages in a webview. A client who is interested in monitoring
  * authentication events should pass a listener object of type
  * cr.login.GaiaAuthHost.Listener as defined in this file. After initialization,
  * call {@code load} to start the authentication flow.
@@ skipping 73 matching lines @@
     this.skipForNow_ = false;
     this.authFlow_ = AuthFlow.DEFAULT;
     this.loaded_ = false;
     this.idpOrigin_ = null;
     this.continueUrl_ = null;
     this.continueUrlWithoutParams_ = null;
     this.initialFrameUrl_ = null;
     this.reloadUrl_ = null;
     this.trusted_ = true;
 
+    this.webview_.addEventListener('drop', this.onDrop_.bind(this));
     this.webview_.addEventListener(
         'newwindow', this.onNewWindow_.bind(this));
     this.webview_.addEventListener(
         'contentload', this.onContentLoad_.bind(this));
     this.webview_.addEventListener(
         'loadstop', this.onLoadStop_.bind(this));
     this.webview_.addEventListener(
         'loadcommit', this.onLoadCommit_.bind(this));
     this.webview_.request.onCompleted.addListener(
         this.onRequestCompleted_.bind(this),
@@ skipping 223 matching lines @@
                                   gaiaId: this.gaiaId_ || '',
                                   password: this.password_ || '',
                                   usingSAML: this.authFlow_ == AuthFlow.SAML,
                                   chooseWhatToSync: this.chooseWhatToSync_,
                                   skipForNow: this.skipForNow_,
                                   sessionIndex: this.sessionIndex_ || '',
                                   trusted: this.trusted_}}));
   };
 
   /**
+   * Invoked at the drop phase of a drag-and-drop operation on the webview.
+   * @private
+   */
+  Authenticator.prototype.onDrop_ = function(e) {
+    var url = e.dataTransfer.getData('url');
+    if (url)
+      this.dispatchEvent(new CustomEvent('dropLink', {detail: url}));
+  };
+
+  /**
    * Invoked when the webview attempts to open a new window.
    * @private
    */
   Authenticator.prototype.onNewWindow_ = function(e) {
     this.dispatchEvent(new CustomEvent('newWindow', {detail: e}));
   };
 
   /**
    * Invoked when a new document is loaded.
    * @private
@@ skipping 36 matching lines @@
   Authenticator.AuthFlow = AuthFlow;
   Authenticator.AuthMode = AuthMode;
   Authenticator.SUPPORTED_PARAMS = SUPPORTED_PARAMS;
 
   return {
     // TODO(guohui, xiyuan): Rename GaiaAuthHost to Authenticator once the old
     // iframe-based flow is deprecated.
     GaiaAuthHost: Authenticator
   };
 });