From 2ad43094ea661ede856d41d10ee8227d6ef5eaff Mon Sep 17 00:00:00 2001
From: Christopher Chedeau <vjeux@fb.com>
Date: Sat, 14 Mar 2015 11:42:25 -0700
Subject: [PATCH] [ReactNative] OSS Interaction Manager

---
 Libraries/Interaction/InteractionManager.js | 64 +++++++++++----------
 Libraries/react-native/react-native.js      |  3 +-
 2 files changed, 35 insertions(+), 32 deletions(-)

diff --git a/Libraries/Interaction/InteractionManager.js b/Libraries/Interaction/InteractionManager.js
index 3e895f3b06..fbdd0cc9f7 100644
--- a/Libraries/Interaction/InteractionManager.js
+++ b/Libraries/Interaction/InteractionManager.js
@@ -13,6 +13,14 @@ var invariant = require('invariant');
 var keyMirror = require('keyMirror');
 var setImmediate = require('setImmediate');
 
+var _emitter = new EventEmitter();
+var _interactionSet = new Set();
+var _addInteractionSet = new Set();
+var _deleteInteractionSet = new Set();
+var _nextUpdateHandle = null;
+var _queue = [];
+var _inc = 0;
+
 /**
  * InteractionManager allows long-running work to be scheduled after any
  * interactions/animations have completed. In particular, this allows JavaScript
@@ -20,11 +28,14 @@ var setImmediate = require('setImmediate');
  *
  * Applications can schedule tasks to run after interactions with the following:
  *
- *   InteractionManager.runAfterInteractions(() => {
- *      // ...long-running synchronous task...
- *   });
+ * ```
+ * InteractionManager.runAfterInteractions(() => {
+ *   // ...long-running synchronous task...
+ * });
+ * ```
  *
  * Compare this to other scheduling alternatives:
+ *
  * - requestAnimationFrame(): for code that animates a view over time.
  * - setImmediate/setTimeout(): run code later, note this may delay animations.
  * - runAfterInteractions(): run code later, without delaying active animations.
@@ -37,27 +48,32 @@ var setImmediate = require('setImmediate');
  * creating an interaction 'handle' on animation start, and clearing it upon
  * completion:
  *
- *   var handle = InteractionManager.createInteractionHandle();
- *   // run animation... (`runAfterInteractions` tasks are queued)
- *   // later, on animation completion:
- *   InteractionManager.clearInteractionHandle(handle);
- *   // queued tasks run if all handles were cleared
+ * ```
+ * var handle = InteractionManager.createInteractionHandle();
+ * // run animation... (`runAfterInteractions` tasks are queued)
+ * // later, on animation completion:
+ * InteractionManager.clearInteractionHandle(handle);
+ * // queued tasks run if all handles were cleared
+ * ```
  */
-
-var _emitter = new EventEmitter();
-var _interactionSet = new Set();
-var _addInteractionSet = new Set();
-var _deleteInteractionSet = new Set();
-var _nextUpdateHandle = null;
-var _queue = [];
-var _inc = 0;
-
 var InteractionManager = {
   Events: keyMirror({
     interactionStart: true,
     interactionComplete: true,
   }),
 
+  /**
+   * Schedule a function to run after all interactions have completed.
+   */
+  runAfterInteractions(callback) {
+    invariant(
+      typeof callback === 'function',
+      'Must specify a function to schedule.'
+    );
+    scheduleUpdate();
+    _queue.push(callback);
+  },
+
   /**
    * Notify manager that an interaction has started.
    */
@@ -81,20 +97,6 @@ var InteractionManager = {
     _deleteInteractionSet.add(handle);
   },
 
-  /**
-   * Schedule a function to run after all interactions have completed.
-   *
-   * @param  {function} callback
-   */
-  runAfterInteractions(callback) {
-    invariant(
-      typeof callback === 'function',
-      'Must specify a function to schedule.'
-    );
-    scheduleUpdate();
-    _queue.push(callback);
-  },
-
   addListener: _emitter.addListener.bind(_emitter),
 };
 
diff --git a/Libraries/react-native/react-native.js b/Libraries/react-native/react-native.js
index 6f0b22df5f..00be3f65af 100644
--- a/Libraries/react-native/react-native.js
+++ b/Libraries/react-native/react-native.js
@@ -7,9 +7,9 @@
 
 var ReactNative = {
   ...require('React'),
-  Animation: require('Animation'),
   ActivityIndicatorIOS: require('ActivityIndicatorIOS'),
   AlertIOS: require('AlertIOS'),
+  Animation: require('Animation'),
   AppRegistry: require('AppRegistry'),
   AppState: require('AppState'),
   AppStateIOS: require('AppStateIOS'),
@@ -18,6 +18,7 @@ var ReactNative = {
   DatePickerIOS: require('DatePickerIOS'),
   ExpandingText: require('ExpandingText'),
   Image: require('Image'),
+  InteractionManager: require('InteractionManager'),
   LayoutAnimation: require('LayoutAnimation'),
   ListView: require('ListView'),
   ListViewDataSource: require('ListViewDataSource'),