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1 // Copyright 2016 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 // ====== New Architecture ===== | |
6 // = This code is only used in the new iOS Chrome architecture. = | |
7 // ============================================================================ | |
8 | |
9 #ifndef IOS_CHROME_APP_APPLICATION_STEP_H_ | |
10 #define IOS_CHROME_APP_APPLICATION_STEP_H_ | |
11 | |
12 #import <Foundation/Foundation.h> | |
13 | |
14 @class ApplicationState; | |
15 | |
16 // Objects that perform application state change steps must conform to this | |
17 // protocol. | |
18 @protocol ApplicationStep<NSObject> | |
19 // Implementors should not modify |state| in -canRunInState. | |
20 - (BOOL)canRunInState:(ApplicationState*)state; | |
21 | |
22 // Implementors should expect to be deallocated after -runInState is called. | |
23 // If an implementor creates objects that need to persist longer than that, they | |
24 // should be stored in |state.state|. | |
25 // Implementors can assume that they are not in any of |state|'s step arrays | |
26 // when this method is called. | |
27 - (void)runInState:(ApplicationState*)state; | |
28 @end | |
29 | |
30 #endif // IOS_CHROME_APP_APPLICATION_STEP_H_ | |
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