1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CHROME_BROWSER_UI_COCOA_ANIMATION_UTILS_H 6 #define CHROME_BROWSER_UI_COCOA_ANIMATION_UTILS_H 7 #pragma once 8 9 #import <Cocoa/Cocoa.h> 10 11 // This class is a stack-based helper useful for unit testing of Cocoa UI, 12 // and any other situation where you want to temporarily turn off Cocoa 13 // animation for the life of a function call or other limited scope. 14 // Just declare one of these, and all animations will complete instantly until 15 // this goes out of scope and pops our state off the Core Animation stack. 16 // 17 // Example: 18 // MyUnitTest() { 19 // WithNoAnimation at_all; // Turn off Cocoa auto animation in this scope. 20 21 22 class WithNoAnimation { 23 public: WithNoAnimation()24 WithNoAnimation() { 25 [NSAnimationContext beginGrouping]; 26 [[NSAnimationContext currentContext] setDuration:0.0]; 27 } 28 ~WithNoAnimation()29 ~WithNoAnimation() { 30 [NSAnimationContext endGrouping]; 31 } 32 }; 33 34 35 #endif // CHROME_BROWSER_UI_COCOA_ANIMATION_UTILS_H 36