Merge commit '7621e2f8dec938cf48181c8b10afc9b01f444e68' into beta

submodules/LegacyComponents/Sources/POPAction.h

@@ -0,0 +1,66 @@
+/**
+ Copyright (c) 2014-present, Facebook, Inc.
+ All rights reserved.
+ 
+ This source code is licensed under the BSD-style license found in the
+ LICENSE file in the root directory of this source tree. An additional grant
+ of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+#ifndef POPACTION_H
+#define POPACTION_H
+
+#import <QuartzCore/CATransaction.h>
+#import "POPDefines.h"
+
+#ifdef __cplusplus
+
+namespace POP {
+  
+  /**
+   @abstract Disables Core Animation actions using RAII.
+   @discussion The disablement of actions is scoped to the current transaction.
+   */
+  class ActionDisabler
+  {
+    BOOL state;
+    
+  public:
+    ActionDisabler() POP_NOTHROW
+    {
+      state = [CATransaction disableActions];
+      [CATransaction setDisableActions:YES];
+    }
+    
+    ~ActionDisabler()
+    {
+      [CATransaction setDisableActions:state];
+    }
+  };
+  
+  /**
+   @abstract Enables Core Animation actions using RAII.
+   @discussion The enablement of actions is scoped to the current transaction.
+   */
+  class ActionEnabler
+  {
+    BOOL state;
+    
+  public:
+    ActionEnabler() POP_NOTHROW
+    {
+      state = [CATransaction disableActions];
+      [CATransaction setDisableActions:NO];
+    }
+    
+    ~ActionEnabler()
+    {
+      [CATransaction setDisableActions:state];
+    }
+  };
+
+}
+
+#endif /* __cplusplus */
+
+#endif /* POPACTION_H */