| /* |
| * Copyright (C) 2016 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| * THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #pragma once |
| |
| #import <Foundation/Foundation.h> |
| |
| // Some named key codes, mainly for convenience. |
| enum KeyCodeType { |
| KeyCodeTypeDeleteBackward = 0x33, |
| KeyCodeTypeLeftArrow = 0x7B, |
| KeyCodeTypeRightArrow = 0x7C |
| }; |
| |
| /** |
| * Return YES when the condition is done and the program should stop spinning. |
| */ |
| typedef BOOL (^ConditionBlock)(); |
| #define CONDITION_BLOCK(expr) ^BOOL() { return expr; } |
| |
| /** |
| * Spins a runloop until the given condition block evaluates to YES. If the given timeout interval has elapsed, and the condition is still unsatisfied, |
| * stop spinning and return NO. Otherwise, return YES. |
| */ |
| BOOL waitUntilWithTimeout(ConditionBlock, NSTimeInterval); |
| BOOL waitUntil(ConditionBlock); |