y-hryk · romyilano · Jun 19, 2015
diff --git a/YSLContainerViewController/YSLChildViewControllerDelegate.h b/YSLContainerViewController/YSLChildViewControllerDelegate.h
@@ -0,0 +1,20 @@
+//
+//  YSLChildViewControllerDelegate.h
+//  YSLContainerViewControllerDemo
+//
+//  Created by Romy on 6/19/15.
+//  Copyright © 2015 h.yamaguchi. All rights reserved.
+//
+
+@import UIKit;
+
+/*
+ *  Delegate so child view controller can communicate with grandparent YSLContainerViewController
+ */
+@protocol YSLChildViewControllerDelegate <NSObject>
+
+// Child view controller selects a value, moves it to the appropriate index in the container view
+- (void)childViewController:(UIViewController *)childViewController
+        didChooseIndexValue:(NSInteger)value;
+
+@end
diff --git a/YSLContainerViewController/YSLContainerViewController.h b/YSLContainerViewController/YSLContainerViewController.h
@@ -7,14 +7,15 @@
 //
 
 #import <UIKit/UIKit.h>
+#import "YSLChildViewControllerDelegate.h"
 
 @protocol YSLContainerViewControllerDelegate <NSObject>
 
 - (void)containerViewItemIndex:(NSInteger)index currentController:(UIViewController *)controller;
 
 @end
 
-@interface YSLContainerViewController : UIViewController
+@interface YSLContainerViewController : UIViewController <YSLChildViewControllerDelegate>
 
 @property (nonatomic, weak) id <YSLContainerViewControllerDelegate> delegate;
 

diff --git a/YSLContainerViewController/YSLContainerViewController.m b/YSLContainerViewController/YSLContainerViewController.m
@@ -192,4 +192,13 @@ - (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
     [self setChildViewControllerWithCurrentIndex:self.currentIndex];
 }
 
+#pragma mark - YSLChildViewControllerDelegate
+
+- (void)childViewController:(UIViewController *)childViewController
+        didChooseIndexValue:(NSInteger)value {
+    if (value != self.currentIndex && value < self.childControllers.count) {
+       [self scrollMenuViewSelectedIndex:value];
+    }
+}
+
 @end
diff --git a/YSLContainerViewControllerDemo.xcodeproj/project.pbxproj b/YSLContainerViewControllerDemo.xcodeproj/project.pbxproj
@@ -92,6 +92,7 @@
 		D0DD9FBF1AFCB67E002CEBB6 /* YSLContainerViewController.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = YSLContainerViewController.m; sourceTree = "<group>"; };
 		D0DD9FC01AFCB67E002CEBB6 /* YSLScrollMenuView.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = YSLScrollMenuView.h; sourceTree = "<group>"; };
 		D0DD9FC11AFCB67E002CEBB6 /* YSLScrollMenuView.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = YSLScrollMenuView.m; sourceTree = "<group>"; };
+		EC861EF71B34BDB0006129DF /* YSLChildViewControllerDelegate.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = YSLChildViewControllerDelegate.h; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -227,6 +228,7 @@
 		D0DD9FBD1AFCB67E002CEBB6 /* YSLContainerViewController */ = {
 			isa = PBXGroup;
 			children = (
+				EC861EF71B34BDB0006129DF /* YSLChildViewControllerDelegate.h */,
 				D0DD9FBE1AFCB67E002CEBB6 /* YSLContainerViewController.h */,
 				D0DD9FBF1AFCB67E002CEBB6 /* YSLContainerViewController.m */,
 				D0DD9FC01AFCB67E002CEBB6 /* YSLScrollMenuView.h */,

diff --git a/YSLContainerViewControllerDemo.xcodeproj/project.xcworkspace/contents.xcworkspacedata b/YSLContainerViewControllerDemo.xcodeproj/project.xcworkspace/contents.xcworkspacedata
diff --git a/YSLContainerViewControllerDemo/ArtistsViewController.h b/YSLContainerViewControllerDemo/ArtistsViewController.h
@@ -7,7 +7,10 @@
 //
 
 #import <UIKit/UIKit.h>
+#import "YSLChildViewControllerDelegate.h"
 
 @interface ArtistsViewController : UITableViewController
 
+@property (weak, nonatomic) id <YSLChildViewControllerDelegate> delegate;
+
 @end
diff --git a/YSLContainerViewControllerDemo/ArtistsViewController.m b/YSLContainerViewControllerDemo/ArtistsViewController.m
@@ -62,7 +62,8 @@ - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger
     return _artistsArray.count;
 }
 
-- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
+- (UITableViewCell *)tableView:(UITableView *)tableView
+         scellForRowAtIndexPath:(NSIndexPath *)indexPath {
     static NSString *cellIdentifier = @"ArtistsCell";
     ArtistsCell *cell = (ArtistsCell*)[tableView dequeueReusableCellWithIdentifier:cellIdentifier];
 

diff --git a/YSLContainerViewControllerDemo/ArtistsViewController.xib b/YSLContainerViewControllerDemo/ArtistsViewController.xib
@@ -1,7 +1,8 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="6211" systemVersion="14A298i" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES">
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="8121.17" systemVersion="14D136" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES">
     <dependencies>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="6204"/>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="8101.14"/>
     </dependencies>
     <objects>
         <placeholder placeholderIdentifier="IBFilesOwner" id="-1" userLabel="File's Owner" customClass="ArtistsViewController">

diff --git a/YSLContainerViewControllerDemo/DetailViewController.h b/YSLContainerViewControllerDemo/DetailViewController.h
@@ -7,7 +7,10 @@
 //
 
 #import <UIKit/UIKit.h>
+#import "YSLChildViewControllerDelegate.h"
 
 @interface DetailViewController : UIViewController
 
+@property (weak, nonatomic) id <YSLChildViewControllerDelegate> delegate;
+
 @end
diff --git a/YSLContainerViewControllerDemo/PlayListTableViewController.h b/YSLContainerViewControllerDemo/PlayListTableViewController.h
@@ -7,7 +7,10 @@
 //
 
 #import <UIKit/UIKit.h>
+#import "YSLChildViewControllerDelegate.h"
 
 @interface PlayListTableViewController : UITableViewController
 
+@property (weak, nonatomic) id <YSLChildViewControllerDelegate> delegate;
+
 @end
diff --git a/YSLContainerViewControllerDemo/PlayListTableViewController.xib b/YSLContainerViewControllerDemo/PlayListTableViewController.xib
@@ -1,7 +1,8 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="6211" systemVersion="14A298i" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES">
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="8121.17" systemVersion="14D136" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES">
     <dependencies>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="6204"/>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="8101.14"/>
     </dependencies>
     <objects>
         <placeholder placeholderIdentifier="IBFilesOwner" id="-1" userLabel="File's Owner" customClass="PlayListTableViewController">

diff --git a/YSLContainerViewControllerDemo/SampleViewController.h b/YSLContainerViewControllerDemo/SampleViewController.h
@@ -7,7 +7,10 @@
 //
 
 #import <UIKit/UIKit.h>
+#import "YSLChildViewControllerDelegate.h"
 
 @interface SampleViewController : UIViewController
 
+@property (weak, nonatomic) id <YSLChildViewControllerDelegate> delegate;
+
 @end
diff --git a/YSLContainerViewControllerDemo/SampleViewController.m b/YSLContainerViewControllerDemo/SampleViewController.m
@@ -20,11 +20,18 @@ - (void)didReceiveMemoryWarning {
 
 - (void)viewWillAppear:(BOOL)animated
 {
-    NSLog(@"SampleViewController viewWillAppear");
+    [super viewWillAppear:animated];
 }
 
 - (void)viewDidLoad {
     [super viewDidLoad];
 }
 
+- (IBAction)btnPressed:(id)sender {
+    if (self.delegate && [self.delegate respondsToSelector:@selector(childViewController:didChooseIndexValue:)]) {
+        // put it to index one for now
+        [self.delegate childViewController:self didChooseIndexValue:0];
+    }
+}
+
 @end
diff --git a/YSLContainerViewControllerDemo/SampleViewController.xib b/YSLContainerViewControllerDemo/SampleViewController.xib
@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="6751" systemVersion="13E28" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES">
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="8121.17" systemVersion="14D136" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES">
     <dependencies>
         <deployment identifier="iOS"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="6736"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="8101.14"/>
     </dependencies>
     <objects>
         <placeholder placeholderIdentifier="IBFilesOwner" id="-1" userLabel="File's Owner" customClass="SampleViewController">

diff --git a/YSLContainerViewControllerDemo/ViewController.m b/YSLContainerViewControllerDemo/ViewController.m
@@ -60,6 +60,13 @@ - (void)viewDidLoad {
     containerVC.delegate = self;
     containerVC.menuItemFont = [UIFont fontWithName:@"Futura-Medium" size:16];
 
+    // delegates for the children
+    playListVC.delegate = containerVC;
+    artistVC.delegate = containerVC;
+    sampleVC1.delegate = containerVC;
+    sampleVC2.delegate = containerVC;
+    sampleVC3.delegate = containerVC;
+
     [self.view addSubview:containerVC.view];
 }