[LayoutAnimation] RCTAnimationTypeKeyboard

Summary:
This adds the Keyboard animation type for when you want to animate UI based on the keyboard appearing/disappearing.
Closes https://github.com/facebook/react-native/pull/1366
Github Author: Stanislav Vishnevskiy <vishnevskiy@gmail.com>

Test Plan: Imported from GitHub, without a `Test Plan:` line.

Libraries/Animation/LayoutAnimation.js

@@ -23,6 +23,7 @@ var TypesEnum = {
   easeInEaseOut: true,
   easeIn: true,
   easeOut: true,
+  keyboard: true,
 };
 var Types = keyMirror(TypesEnum);
 

React/Base/RCTConvert.m

@@ -997,6 +997,7 @@ RCT_ENUM_CONVERTER(RCTAnimationType, (@{
   @"easeIn": @(RCTAnimationTypeEaseIn),
   @"easeOut": @(RCTAnimationTypeEaseOut),
   @"easeInEaseOut": @(RCTAnimationTypeEaseInEaseOut),
+  @"keyboard": @(RCTAnimationTypeKeyboard),
 }), RCTAnimationTypeEaseInEaseOut, integerValue)
 
 @end

React/Modules/RCTUIManager.m

@@ -51,20 +51,23 @@ static NSDictionary *RCTPropsMerge(NSDictionary *beforeProps, NSDictionary *newP
 
 @implementation RCTAnimation
 
-static UIViewAnimationCurve UIViewAnimationCurveFromRCTAnimationType(RCTAnimationType type)
+static UIViewAnimationOptions UIViewAnimationOptionsFromRCTAnimationType(RCTAnimationType type)
 {
   switch (type) {
     case RCTAnimationTypeLinear:
-      return UIViewAnimationCurveLinear;
+      return UIViewAnimationOptionCurveLinear;
     case RCTAnimationTypeEaseIn:
-      return UIViewAnimationCurveEaseIn;
+      return UIViewAnimationOptionCurveEaseIn;
     case RCTAnimationTypeEaseOut:
-      return UIViewAnimationCurveEaseOut;
+      return UIViewAnimationOptionCurveEaseOut;
     case RCTAnimationTypeEaseInEaseOut:
-      return UIViewAnimationCurveEaseInOut;
+      return UIViewAnimationOptionCurveEaseInOut;
+    case RCTAnimationTypeKeyboard:
+      // http://stackoverflow.com/questions/18870447/how-to-use-the-default-ios7-uianimation-curve
+      return (UIViewAnimationOptions)(7 << 16);
     default:
       RCTLogError(@"Unsupported animation type %zd", type);
-      return UIViewAnimationCurveEaseInOut;
+      return UIViewAnimationOptionCurveEaseInOut;
   }
 }
 
@@ -116,7 +119,7 @@ static UIViewAnimationCurve UIViewAnimationCurveFromRCTAnimationType(RCTAnimatio
   } else {
 
     UIViewAnimationOptions options = UIViewAnimationOptionBeginFromCurrentState |
-      UIViewAnimationCurveFromRCTAnimationType(_animationType);
+      UIViewAnimationOptionsFromRCTAnimationType(_animationType);
 
     [UIView animateWithDuration:_duration
                           delay:_delay

React/Views/RCTAnimationType.h

@@ -15,4 +15,5 @@ typedef NS_ENUM(NSInteger, RCTAnimationType) {
   RCTAnimationTypeEaseIn,
   RCTAnimationTypeEaseOut,
   RCTAnimationTypeEaseInEaseOut,
+  RCTAnimationTypeKeyboard,
 };