[ios clean] Add placeholder for NTP bookmarks, chrome home and open tabs.

ios/clean/chrome/browser/ui/ntp/new_tab_page_coordinator.mm

Index: ios/clean/chrome/browser/ui/ntp/new_tab_page_coordinator.mm
diff --git a/ios/clean/chrome/browser/ui/ntp/new_tab_page_coordinator.mm b/ios/clean/chrome/browser/ui/ntp/new_tab_page_coordinator.mm
index 3be996254da49529947f51990f654133187cb452..4d20d5217ec7787d6ca0d3a26d9a1c2e45a905f3 100644
--- a/ios/clean/chrome/browser/ui/ntp/new_tab_page_coordinator.mm
+++ b/ios/clean/chrome/browser/ui/ntp/new_tab_page_coordinator.mm
@@ -4,26 +4,84 @@
 
 #import "ios/clean/chrome/browser/ui/ntp/new_tab_page_coordinator.h"
 
+#include "base/logging.h"
+#include "ios/chrome/browser/ui/ui_util.h"
+#import "ios/clean/chrome/browser/ui/bookmarks/bookmarks_coordinator.h"
+#import "ios/clean/chrome/browser/ui/commands/ntp_commands.h"
+#import "ios/clean/chrome/browser/ui/ntp/new_tab_page_home_coordinator.h"
+#import "ios/clean/chrome/browser/ui/ntp/new_tab_page_incognito_coordinator.h"
+#import "ios/clean/chrome/browser/ui/ntp/new_tab_page_mediator.h"
 #import "ios/clean/chrome/browser/ui/ntp/new_tab_page_view_controller.h"
+#import "ios/clean/chrome/browser/ui/open_tabs/open_tabs_coordinator.h"
 #import "ios/shared/chrome/browser/coordinator_context/coordinator_context.h"
+#import "ios/shared/chrome/browser/ui/coordinators/browser_coordinator+internal.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
-@interface NTPCoordinator ()
+@interface NTPCoordinator ()<NTPCommands>
+@property(nonatomic, strong) NTPMediator* mediator;
 @property(nonatomic, strong) NTPViewController* viewController;
 @end
 
 @implementation NTPCoordinator
+@synthesize mediator = _mediator;
 @synthesize viewController = _viewController;
+@synthesize webState = _webState;
 
 - (void)start {
+  DCHECK(self.webState);
   self.viewController = [[NTPViewController alloc] init];
-  [self.context.baseViewController presentViewController:self.viewController
-                                                animated:self.context.animated
-                                              completion:nil];
+  self.mediator = [[NTPMediator alloc] initWithConsumer:self.viewController];
+  self.viewController.ntpCommandHandler = self;

[marq (ping after 24h), 2017/04/05 12:22:48]

Any reason for these commands not to go through the dispatcher? 

[justincohen, 2017/04/05 19:28:24]

Done.

   [super start];
 }
 
+- (void)stop {
+  [super stop];
+  for (BrowserCoordinator* child in self.children) {

[marq (ping after 24h), 2017/04/05 12:22:48]

Does this belong in the superclass?

[justincohen, 2017/04/05 19:28:24]

tab coordinator currently does the same thing.  Is there any reason this
shouldn't go in BrowserCoordinator?

[lpromero, 2017/04/06 13:01:04]

I am thinking about moving it there.

[justincohen, 2017/04/06 18:25:09]

Acknowledged.

+    [child stop];
+  }
+}
+
+- (void)startNTPHomePanel {

[marq (ping after 24h), 2017/04/05 12:22:48]

#pragma mark - NTPCommands

[justincohen, 2017/04/05 19:28:24]

Done.

+  NTPHomeCoordinator* panelCoordinator = [[NTPHomeCoordinator alloc] init];
+  [self addChildCoordinator:panelCoordinator];
+  panelCoordinator.webState = self.webState;
+  [panelCoordinator start];
+  [self.viewController
+      addHomePanelViewController:panelCoordinator.viewController];
+}
+
+- (void)startNTPBookmarksPanel {
+  BookmarksCoordinator* panelCoordinator = [[BookmarksCoordinator alloc] init];
+  [self addChildCoordinator:panelCoordinator];
+  [panelCoordinator start];
+
+  if (IsIPadIdiom()) {
+    [self.viewController
+        addBookmarksViewController:panelCoordinator.viewController];
+  }
+}
+
+- (void)startNTPOpenTabsPanel {
+  OpenTabsCoordinator* panelCoordinator = [[OpenTabsCoordinator alloc] init];
+  [self addChildCoordinator:panelCoordinator];
+  [panelCoordinator start];
+  if (IsIPadIdiom()) {

[marq (ping after 24h), 2017/04/05 12:22:48]

The coordinator shouldn't care about what device size this is. 

[justincohen, 2017/04/05 19:28:24]

Who should handle the differences in presentation style for the NTP.  In iPad we
embed a view controller inside a scroll view.  On iPhone we use
-presentViewController?

+    [self.viewController
+        addOpenTabsViewController:panelCoordinator.viewController];
+  }
+}
+
+- (void)startNTPIncognitoPanel {
+  NTPIncognitoCoordinator* panelCoordinator =
+      [[NTPIncognitoCoordinator alloc] init];
+  [self addChildCoordinator:panelCoordinator];
+  [panelCoordinator start];
+  [self.viewController
+      addIncognitoViewController:panelCoordinator.viewController];
+}
+
 @end