Fake Sync implementation in ios_web_view_shell.

Change-Id: I6187c15d04b5c1df5d3fc520a2647b2499d2720c
Reviewed-on: https://chromium-review.googlesource.com/c/1345711
Commit-Queue: Hiroshi Ichikawa <ichikawa@chromium.org>
Reviewed-by: John Wu <jzw@chromium.org>
Reviewed-by: Sylvain Defresne <sdefresne@chromium.org>
Cr-Commit-Position: refs/heads/master@{#610311}

ios/web_view/shell/BUILD.gn

@@ -4,6 +4,19 @@
 
 import("//build/config/ios/rules.gni")
 
+declare_args() {
+  # Authorization service implementation used in ios_web_view_shell. Uses a fake
+  # implementation by default. Override this with a real implementation to make
+  # Sync feature work in the shell. The real implementation must provide
+  # implementation of ShellAuthService class.
+  ios_web_view_shell_auth_service =
+      "//ios/web_view/shell:shell_auth_service_fake_impl"
+
+  # Path to an entitlements file used in ios_web_view_shell. Can be overridden
+  # to provide an alternative.
+  ios_web_view_shell_entitlements_path = "//build/config/ios/entitlements.plist"
+}
+
 ios_app_bundle("ios_web_view_shell") {
   info_plist = "Info.plist"
 
@@ -11,6 +24,32 @@ ios_app_bundle("ios_web_view_shell") {
     ":shell",
   ]
   bundle_deps = [ "//ios/web_view:web_view+bundle" ]
+  entitlements_path = ios_web_view_shell_entitlements_path
+
+  configs += [ "//build/config/compiler:enable_arc" ]
+}
+
+source_set("shell_auth_service_interface") {
+  sources = [
+    "shell_auth_service.h",
+  ]
+
+  deps = [
+    "//ios/web_view:web_view+link",
+  ]
+
+  configs += [ "//build/config/compiler:enable_arc" ]
+}
+
+source_set("shell_auth_service_fake_impl") {
+  sources = [
+    "shell_auth_service_fake.m",
+  ]
+
+  deps = [
+    ":shell_auth_service_interface",
+    "//ios/web_view:web_view+link",
+  ]
 
   configs += [ "//build/config/compiler:enable_arc" ]
 }
@@ -30,7 +69,9 @@ source_set("shell") {
 
   deps = [
     ":resources",
+    ":shell_auth_service_interface",
     "//ios/web_view:web_view+link",
+    ios_web_view_shell_auth_service,
   ]
 
   libs = [

ios/web_view/shell/shell_auth_service.h

+// Copyright 2018 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.
+#ifndef IOS_WEB_VIEW_SHELL_SHELL_AUTH_SERVICE_H_
+#define IOS_WEB_VIEW_SHELL_SHELL_AUTH_SERVICE_H_
+
+#import <ChromeWebView/ChromeWebView.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+// Authorization service for ios_web_view_shell.
+@interface ShellAuthService : NSObject<CWVSyncControllerDataSource>
+
+// Returns available identities.
+- (NSArray<CWVIdentity*>*)identities;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif  // IOS_WEB_VIEW_SHELL_SHELL_AUTH_SERVICE_H_

ios/web_view/shell/shell_auth_service_fake.m

+// Copyright 2018 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.
+
+#import "ios/web_view/shell/shell_auth_service.h"
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+// Fake implementation of ShellAuthService.
+@implementation ShellAuthService
+
+- (NSArray<CWVIdentity*>*)identities {
+  return @[];
+}
+
+#pragma mark CWVSyncControllerDataSource
+
+- (void)syncController:(CWVSyncController*)syncController
+    getAccessTokenForScopes:(NSArray<NSString*>*)scopes
+          completionHandler:(void (^)(NSString* accessToken,
+                                      NSDate* expirationDate,
+                                      NSError* error))completionHandler {
+  // Always returns an error.
+  if (completionHandler) {
+    completionHandler(
+        nil, nil,
+        [NSError errorWithDomain:@"org.chromium.chromewebview.shell"
+                            code:0
+                        userInfo:nil]);
+  }
+}
+
+@end

ios/web_view/shell/shell_view_controller.m

@@ -6,6 +6,7 @@
 
 #import <MobileCoreServices/MobileCoreServices.h>
 
+#import "ios/web_view/shell/shell_auth_service.h"
 #import "ios/web_view/shell/shell_autofill_delegate.h"
 #import "ios/web_view/shell/shell_translation_delegate.h"
 
@@ -24,6 +25,7 @@ NSString* const kWebViewShellJavaScriptDialogTextFieldAccessibiltyIdentifier =
                                   CWVNavigationDelegate,
                                   CWVUIDelegate,
                                   CWVScriptCommandHandler,
+                                  CWVSyncControllerDelegate,
                                   UITextFieldDelegate>
 // Container for |webView|.
 @property(nonatomic, strong) UIView* containerView;
@@ -46,6 +48,7 @@ NSString* const kWebViewShellJavaScriptDialogTextFieldAccessibiltyIdentifier =
 // A controller to show a "Share" menu for the downloaded file.
 @property(nonatomic, strong, nullable)
     UIDocumentInteractionController* documentInteractionController;
+@property(nonatomic, strong) ShellAuthService* authService;
 
 - (void)back;
 - (void)forward;
@@ -69,6 +72,7 @@ NSString* const kWebViewShellJavaScriptDialogTextFieldAccessibiltyIdentifier =
 @synthesize downloadTask = _downloadTask;
 @synthesize downloadFilePath = _downloadFilePath;
 @synthesize documentInteractionController = _documentInteractionController;
+@synthesize authService = _authService;
 
 - (void)viewDidLoad {
   [super viewDidLoad];
@@ -160,8 +164,12 @@ NSString* const kWebViewShellJavaScriptDialogTextFieldAccessibiltyIdentifier =
 
   [CWVWebView setUserAgentProduct:@"Dummy/1.0"];
 
-  [self createWebViewWithConfiguration:[CWVWebViewConfiguration
-                                           defaultConfiguration]];
+  CWVWebViewConfiguration* configuration =
+      [CWVWebViewConfiguration defaultConfiguration];
+  configuration.syncController.delegate = self;
+  [self createWebViewWithConfiguration:configuration];
+
+  _authService = [[ShellAuthService alloc] init];
 }
 
 - (void)observeValueForKeyPath:(NSString*)keyPath
@@ -251,6 +259,32 @@ NSString* const kWebViewShellJavaScriptDialogTextFieldAccessibiltyIdentifier =
                                          [weakSelf resetTranslateSettings];
                                        }]];
 
+  for (CWVIdentity* identity in [_authService identities]) {
+    NSString* title =
+        [NSString stringWithFormat:@"Start sync with %@", identity.email];
+    [alertController
+        addAction:[UIAlertAction
+                      actionWithTitle:title
+                                style:UIAlertActionStyleDefault
+                              handler:^(UIAlertAction* action) {
+                                CWVSyncController* syncController =
+                                    weakSelf.webView.configuration
+                                        .syncController;
+                                [syncController
+                                    startSyncWithIdentity:identity
+                                               dataSource:_authService];
+                              }]];
+  }
+
+  [alertController
+      addAction:[UIAlertAction
+                    actionWithTitle:@"Stop sync"
+                              style:UIAlertActionStyleDefault
+                            handler:^(UIAlertAction* action) {
+                              [weakSelf.webView.configuration
+                                      .syncController stopSyncAndClearIdentity];
+                            }]];
+
   [self presentViewController:alertController animated:YES completion:nil];
 }
 
@@ -571,4 +605,20 @@ NSString* const kWebViewShellJavaScriptDialogTextFieldAccessibiltyIdentifier =
   NSLog(@"%@", NSStringFromSelector(_cmd));
 }
 
+#pragma mark CWVSyncControllerDelegate
+
+- (void)syncControllerDidStartSync:(CWVSyncController*)syncController {
+  NSLog(@"%@", NSStringFromSelector(_cmd));
+}
+
+- (void)syncController:(CWVSyncController*)syncController
+      didFailWithError:(NSError*)error {
+  NSLog(@"%@:%@", NSStringFromSelector(_cmd), error);
+}
+
+- (void)syncController:(CWVSyncController*)syncController
+    didStopSyncWithReason:(CWVStopSyncReason)reason {
+  NSLog(@"%@:%ld", NSStringFromSelector(_cmd), reason);
+}
+
 @end