[iOS Clean] Wired up ContextMenuCommands.

ios/clean/chrome/browser/ui/web_contents/web_coordinator.mm

 // Copyright 2016 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/clean/chrome/browser/ui/web_contents/web_coordinator.h"
 
+#include "base/mac/foundation_util.h"
 #include "base/memory/ptr_util.h"
+#import "ios/clean/chrome/browser/ui/commands/context_menu_commands.h"
+#import "ios/clean/chrome/browser/ui/context_menu/context_menu_context_impl.h"
 #import "ios/clean/chrome/browser/ui/context_menu/web_context_menu_coordinator.h"
 #import "ios/clean/chrome/browser/ui/web_contents/web_contents_mediator.h"
 #import "ios/clean/chrome/browser/ui/web_contents/web_contents_view_controller.h"
 #import "ios/shared/chrome/browser/ui/browser_list/browser.h"
+#import "ios/shared/chrome/browser/ui/commands/command_dispatcher.h"
 #import "ios/shared/chrome/browser/ui/coordinators/browser_coordinator+internal.h"
+#include "ios/web/public/navigation_manager.h"
 #include "ios/web/public/web_state/web_state.h"
 #import "ios/web/public/web_state/web_state_delegate_bridge.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
-@interface WebCoordinator ()<CRWWebStateDelegate> {
+@interface WebCoordinator ()<ContextMenuCommands, CRWWebStateDelegate> {
   std::unique_ptr<web::WebStateDelegateBridge> _webStateDelegate;
 }
 @property(nonatomic, strong) WebContentsViewController* viewController;
 @property(nonatomic, strong) WebContentsMediator* mediator;
 @end
 
 @implementation WebCoordinator
 @synthesize webState = _webState;
 @synthesize viewController = _viewController;
 @synthesize mediator = _mediator;
@@ skipping 19 matching lines @@
   self.mediator.webStateList = &self.browser->web_state_list();
   [super start];
 }
 
 - (void)stop {
   [super stop];
   [self.mediator disconnect];
 }
 
 - (void)childCoordinatorDidStart:(BrowserCoordinator*)childCoordinator {
-  DCHECK([childCoordinator isKindOfClass:[WebContextMenuCoordinator class]]);
+  // Register to receive relevant ContextMenuCommands.
+  if ([childCoordinator isKindOfClass:[WebContextMenuCoordinator class]]) {
+    [self.browser->dispatcher()
+        startDispatchingToTarget:self
+                     forSelector:@selector(executeContextMenuScript:)];
+    [self.browser->dispatcher()
+        startDispatchingToTarget:self
+                     forSelector:@selector(openContextMenuImage:)];
+  }
   [self.viewController presentViewController:childCoordinator.viewController
                                     animated:YES
                                   completion:nil];
 }
 
+- (void)childCoordinatorWillStop:(BrowserCoordinator*)childCoordinator {
+  // Unregister ContextMenuCommands once the UI has been dismissed.
+  if ([childCoordinator isKindOfClass:[WebContextMenuCoordinator class]]) {
+    [self.browser->dispatcher()
+        stopDispatchingForSelector:@selector(executeContextMenuScript:)];
+    [self.browser->dispatcher()
+        stopDispatchingForSelector:@selector(openContextMenuImage:)];
+  }
+}
+
+#pragma mark - ContextMenuCommand
+
+- (void)executeContextMenuScript:(ContextMenuContext*)context {
+  ContextMenuContextImpl* contextImpl =
+      base::mac::ObjCCastStrict<ContextMenuContextImpl>(context);
+  self.webState->ExecuteJavaScript(contextImpl.script);
+}
+
+- (void)openContextMenuImage:(ContextMenuContext*)context {
+  ContextMenuContextImpl* contextImpl =
+      base::mac::ObjCCastStrict<ContextMenuContextImpl>(context);
+  web::NavigationManager::WebLoadParams loadParams(contextImpl.imageURL);
+  self.webState->GetNavigationManager()->LoadURLWithParams(loadParams);
+}
+
 #pragma mark - CRWWebStateDelegate
 
 - (BOOL)webState:(web::WebState*)webState
     handleContextMenu:(const web::ContextMenuParams&)params {
+  ContextMenuContextImpl* context =
+      [[ContextMenuContextImpl alloc] initWithParams:params];
   WebContextMenuCoordinator* contextMenu =
-      [[WebContextMenuCoordinator alloc] init];
+      [[WebContextMenuCoordinator alloc] initWithContext:context];
   [self addChildCoordinator:contextMenu];
   [contextMenu start];
   return YES;
 }
 
 @end