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| 1 // Copyright 2014 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 IOS_WEB_WEB_STATE_UI_WEB_VIEW_JS_UTILS_H_ |
| 6 #define IOS_WEB_WEB_STATE_UI_WEB_VIEW_JS_UTILS_H_ |
| 7 |
| 8 #import <Foundation/Foundation.h> |
| 9 |
| 10 @class UIWebView; |
| 11 @class WKWebView; |
| 12 |
| 13 // This file contains functions that asynchronously evaluate JavaScript on |
| 14 // WKWebView/UIWebView and provide result in the same format. Call |
| 15 // |completion_handler| with results of the evaluation or an NSError if there is |
| 16 // an error. The |completion_handler| can be nil. |
| 17 namespace web { |
| 18 |
| 19 // The type of the completion handler block that is called to inform about |
| 20 // JavaScript evaluation completion. |
| 21 typedef void (^JavaScriptCompletion)(NSString*, NSError*); |
| 22 |
| 23 // Asynchronous adaptor to evaluate JavaScript on UIWebView. Provides evaluation |
| 24 // result as it is, without modifications. |
| 25 void EvaluateJavaScript(UIWebView* web_view, |
| 26 NSString* script, |
| 27 JavaScriptCompletion completion_handler); |
| 28 |
| 29 // Evaluates JavaScript on WKWebView. Provides evaluation result is the same |
| 30 // format as UIWebView. |
| 31 void EvaluateJavaScript(WKWebView* web_view, |
| 32 NSString* script, |
| 33 JavaScriptCompletion completion_handler); |
| 34 |
| 35 } // namespace web |
| 36 |
| 37 #endif // IOS_WEB_WEB_STATE_UI_WEB_VIEW_JS_UTILS_H_ |
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