Merge pull request kitasuke#318 from spsammy/add-scrolling-start-end-support

kitasuke · web-flow · commit 08e97d7c5926 · 2017-01-08T14:26:19.000-08:00
Add support for didScrollStart and didScrollEnd.
diff --git a/Example/PagingMenuControllerDemo/PagingMenuViewController.swift b/Example/PagingMenuControllerDemo/PagingMenuViewController.swift
@@ -32,6 +32,10 @@ class PagingMenuViewController: UIViewController {
             case let .didMoveItem(menuItemView, previousMenuItemView):
                 print(previousMenuItemView)
                 print(menuItemView)
+            case .didScrollStart:
+                print("Scroll start")
+            case .didScrollEnd:
+                print("Scroll end")
             }
         }
     }
diff --git a/Pod/Classes/PagingMenuController.swift b/Pod/Classes/PagingMenuController.swift
@@ -16,6 +16,8 @@ public enum MenuMoveState {
     case didMoveController(to: UIViewController, from: UIViewController)
     case willMoveItem(to: MenuItemView, from: MenuItemView)
     case didMoveItem(to: MenuItemView, from: MenuItemView)
+    case didScrollStart
+    case didScrollEnd
 }
 
 internal let MinimumSupportedViewCount = 1
@@ -321,7 +323,15 @@ extension PagingMenuController: UIScrollViewDelegate {
         
         move(toPage: nextPage)
     }
-    
+
+    public func scrollViewWillBeginDragging(_ scrollView: UIScrollView) {
+        onMove?(.didScrollStart)
+    }
+
+    public func scrollViewDidEndDecelerating(_ scrollView: UIScrollView, willDecelerate decelerate: Bool) {
+        onMove?(.didScrollEnd)
+    }
+
     public func scrollViewDidEndDragging(_ scrollView: UIScrollView, willDecelerate decelerate: Bool) {
         switch (scrollView, decelerate) {
         case (let scrollView, false) where scrollView.isEqual(menuView): break

Original file line number	Diff line number	Diff line change
`@@ -32,6 +32,10 @@ class PagingMenuViewController: UIViewController {`
`32`	`32`	`case let .didMoveItem(menuItemView, previousMenuItemView):`
`33`	`33`	`print(previousMenuItemView)`
`34`	`34`	`print(menuItemView)`
	`35`	`+ case .didScrollStart:`
	`36`	`+ print("Scroll start")`
	`37`	`+ case .didScrollEnd:`
	`38`	`+ print("Scroll end")`
`35`	`39`	`}`
`36`	`40`	`}`
`37`	`41`	`}`