| // Copyright 2018 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef IOS_CHROME_BROWSER_UI_DIALOGS_COMPLETION_BLOCK_UTIL_H_ |
| #define IOS_CHROME_BROWSER_UI_DIALOGS_COMPLETION_BLOCK_UTIL_H_ |
| |
| #import <Foundation/Foundation.h> |
| |
| namespace completion_block_util { |
| |
| // Typedefs are required to return Objective C blocks from C++ util functions. |
| typedef void (^AlertCallback)(void); |
| typedef void (^ConfirmCallback)(BOOL isConfirmed); |
| typedef void (^PromptCallback)(NSString* input); |
| typedef void (^HTTPAuthCallack)(NSString* user, NSString* password); |
| typedef void (^DecidePolicyCallback)(BOOL shouldContinue); |
| |
| // Completion callbacks provided by web// for dialogs have a built-in |
| // mechanism that throws an exception if they are deallocated before being |
| // executed. The following utility functions convert these web// completion |
| // blocks into safer versions that ensure that the original block is called |
| // before being deallocated. |
| AlertCallback GetSafeJavaScriptAlertCompletion(AlertCallback callback); |
| ConfirmCallback GetSafeJavaScriptConfirmationCompletion( |
| ConfirmCallback callback); |
| PromptCallback GetSafeJavaScriptPromptCompletion(PromptCallback callback); |
| HTTPAuthCallack GetSafeHTTPAuthCompletion(HTTPAuthCallack callback); |
| DecidePolicyCallback GetSafeDecidePolicyCompletion( |
| DecidePolicyCallback callback); |
| |
| } // completion_block_util |
| |
| #endif // IOS_CHROME_BROWSER_UI_DIALOGS_COMPLETION_BLOCK_UTIL_H_ |
