[iOS][Password-Breach] Add dispatcher command

Bug: 1834141
Change-Id: I67f95f6ffd9f35b8197b0cb9c8021eaaa62aa1cb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1834147
Commit-Queue: Javier Ernesto Flores Robles <javierrobles@chromium.org>
Reviewed-by: Mark Cogan <marq@chromium.org>
Cr-Commit-Position: refs/heads/master@{#703250}

ios/chrome/browser/ui/browser_view/browser_coordinator.mm

@@ -322,6 +322,7 @@
 
   self.passwordBreachCoordinator = [[PasswordBreachCoordinator alloc]
       initWithBaseViewController:self.viewController];
+  self.passwordBreachCoordinator.dispatcher = self.dispatcher;
 
   self.printController = [[PrintController alloc]
       initWithContextGetter:self.browserState->GetRequestContext()];

ios/chrome/browser/ui/commands/BUILD.gn

@@ -19,6 +19,7 @@ source_set("commands") {
     "open_new_tab_command.h",
     "open_new_tab_command.mm",
     "page_info_commands.h",
+    "password_breach_commands.h",
     "popup_menu_commands.h",
     "qr_scanner_commands.h",
     "reading_list_add_command.h",
@@ -41,6 +42,7 @@ source_set("commands") {
   public_deps = [
     "//base",
     "//components/browsing_data/core",
+    "//components/password_manager/core/browser",
     "//components/signin/public/base",
     "//ios/chrome/browser/browsing_data:browsing_data_remove_mask",
   ]

ios/chrome/browser/ui/commands/password_breach_commands.h

+// Copyright 2019 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_CHROME_BROWSER_UI_COMMANDS_PASSWORD_BREACH_COMMANDS_H_
+#define IOS_CHROME_BROWSER_UI_COMMANDS_PASSWORD_BREACH_COMMANDS_H_
+
+#import <UIKit/UIKit.h>
+
+#include "components/password_manager/core/browser/leak_detection_dialog_utils.h"
+
+class GURL;
+
+using password_manager::CredentialLeakType;
+
+// Commands related to Password Breach.
+@protocol PasswordBreachCommands
+
+// Shows Password Breach for |leakType| and |URL|.
+- (void)showPasswordBreachForLeakType:(CredentialLeakType)leakType
+                                  URL:(const GURL&)URL;
+
+@end
+
+#endif  // IOS_CHROME_BROWSER_UI_COMMANDS_PASSWORD_BREACH_COMMANDS_H_

ios/chrome/browser/ui/passwords/BUILD.gn

@@ -19,6 +19,7 @@ source_set("passwords") {
     "//base",
     "//components/password_manager/core/browser",
     "//ios/chrome/app/strings",
+    "//ios/chrome/browser/ui/commands",
     "//ios/chrome/browser/ui/coordinators:chrome_coordinators",
     "//ios/chrome/common/colors",
     "//ios/chrome/common/ui_util",

ios/chrome/browser/ui/passwords/password_breach_coordinator.h

@@ -7,10 +7,16 @@
 
 #import "ios/chrome/browser/ui/coordinators/chrome_coordinator.h"
 
+@class CommandDispatcher;
+
 // Presents and stops the Password Breach feature, which consists in alerting
 // the user that Chrome detected a leaked credential. In some scenarios it
 // prompts for a checkup of the stored passwords.
 @interface PasswordBreachCoordinator : ChromeCoordinator
+
+// The dispatcher used to register commands.
+@property(nonatomic, weak) CommandDispatcher* dispatcher;
+
 @end
 
 #endif  // IOS_CHROME_BROWSER_UI_PASSWORDS_PASSWORD_BREACH_COORDINATOR_H_

ios/chrome/browser/ui/passwords/password_breach_coordinator.mm

@@ -4,6 +4,8 @@
 
 #import "ios/chrome/browser/ui/passwords/password_breach_coordinator.h"
 
+#import "ios/chrome/browser/ui/commands/command_dispatcher.h"
+#import "ios/chrome/browser/ui/commands/password_breach_commands.h"
 #import "ios/chrome/browser/ui/passwords/password_breach_mediator.h"
 #import "ios/chrome/browser/ui/passwords/password_breach_view_controller.h"
 
@@ -11,7 +13,7 @@
 #error "This file requires ARC support."
 #endif
 
-@interface PasswordBreachCoordinator ()
+@interface PasswordBreachCoordinator () <PasswordBreachCommands>
 
 // The main view controller for this coordinator.
 @property(nonatomic, strong) PasswordBreachViewController* viewController;
@@ -25,7 +27,9 @@
 
 - (void)start {
   [super start];
-  self.viewController = [[PasswordBreachViewController alloc] init];
+  // To start, a mediator and view controller should be ready.
+  DCHECK(self.viewController);
+  DCHECK(self.mediator);
   [self.baseViewController presentViewController:self.viewController
                                         animated:YES
                                       completion:nil];
@@ -40,4 +44,29 @@
   [super stop];
 }
 
+#pragma mark - Setters
+
+- (void)setDispatcher:(CommandDispatcher*)dispatcher {
+  if (_dispatcher == dispatcher) {
+    return;
+  }
+  [_dispatcher stopDispatchingToTarget:self];
+  [dispatcher startDispatchingToTarget:self
+                           forProtocol:@protocol(PasswordBreachCommands)];
+  _dispatcher = dispatcher;
+}
+
+#pragma mark - PasswordBreachCommands
+
+- (void)showPasswordBreachForLeakType:(CredentialLeakType)leakType
+                                  URL:(const GURL&)URL {
+  self.viewController = [[PasswordBreachViewController alloc] init];
+  self.mediator =
+      [[PasswordBreachMediator alloc] initWithConsumer:self.viewController
+                                                   URL:URL
+                                              leakType:leakType];
+  self.viewController.actionHandler = self.mediator;
+  [self start];
+}
+
 @end