Suggestions UI - stack item

ios/showcase/suggestions/sc_suggestions_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/showcase/suggestions/sc_suggestions_coordinator.h"
 
 #import "ios/chrome/browser/ui/suggestions/suggestions_commands.h"
 #import "ios/chrome/browser/ui/suggestions/suggestions_view_controller.h"
+#import "ios/showcase/common/protocol_alerter.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
 @interface SCSuggestionsCoordinator ()<SuggestionsCommands>
 
 @property(nonatomic, strong)
     SuggestionsViewController* suggestionViewController;
+@property(nonatomic, strong) ProtocolAlerter* alerter;
 
 @end
 
 @implementation SCSuggestionsCoordinator
 
 @synthesize baseViewController;
 @synthesize suggestionViewController = _suggestionViewController;
+@synthesize alerter = _alerter;
 
 #pragma mark - Coordinator
 
 - (void)start {
+  self.alerter = [[ProtocolAlerter alloc]
+      initWithProtocols:@[ @protocol(SuggestionsCommands) ]];
+  self.alerter.baseViewController = self.baseViewController;
+
   _suggestionViewController = [[SuggestionsViewController alloc]
       initWithStyle:CollectionViewControllerStyleDefault];
 
   _suggestionViewController.suggestionCommandHandler = self;

[marq (ping after 24h), 2017/01/16 18:04:43]

Just make protocolAlerter the suggestionCommandHandler, then you don't need to
manually forward methods into it.

[gambard, 2017/01/17 13:28:11]

I want to respond to some command (like "addEmptyItem") and forward some other
to the alerter.

 
   [self.baseViewController pushViewController:_suggestionViewController
                                      animated:YES];
 }
 
 #pragma mark - SuggestionsCommands
 
 - (void)addEmptyItem {
   [self.suggestionViewController addTextItem:@"Button clicked"
                                     subtitle:@"Item Added!"
                                    toSection:5];
 }
 
+- (void)openReadingList {
+  [static_cast<id<SuggestionsCommands>>(self.alerter) openReadingList];
+}
+
+- (void)openFirstPageOfReadingList {
+  [static_cast<id<SuggestionsCommands>>(self.alerter)
+      openFirstPageOfReadingList];
+}
+
 @end