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| 1 // Copyright 2015 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_WEBUI_CRW_WEB_UI_PAGE_BUILDER_H_ |
| 6 #define IOS_WEB_WEBUI_CRW_WEB_UI_PAGE_BUILDER_H_ |
| 7 |
| 8 #import <Foundation/Foundation.h> |
| 9 |
| 10 #include "url/gurl.h" |
| 11 |
| 12 namespace web { |
| 13 // Block type for WebUI page build completion callback. |
| 14 typedef void (^WebUIPageCompletion)(NSString*); |
| 15 // Block type for WebUI page builder delegate completion callback. |
| 16 typedef void (^WebUIDelegateCompletion)(NSString*, const GURL&); |
| 17 } // namespace web |
| 18 |
| 19 @class CRWWebUIPageBuilder; |
| 20 |
| 21 // Delegate for CRWWebUIPageBuilder. Handles resource retrieval. |
| 22 @protocol CRWWebUIPageBuilderDelegate<NSObject> |
| 23 // Fetches resource for resourceURL and invokes completionHandler with the |
| 24 // result. |
| 25 - (void)webUIPageBuilder:(CRWWebUIPageBuilder*)webUIPageBuilder |
| 26 fetchResourceWithURL:(const GURL&)resourceURL |
| 27 completionHandler:(web::WebUIDelegateCompletion)completionHandler; |
| 28 @end |
| 29 |
| 30 // Class for requesting and building WebUI HTML pages. Due to limitations on |
| 31 // custom network protocols for WKWebView, it is not possible to directly load |
| 32 // WebUI in WKWebView via the network stack. Instead, WebUI resources are |
| 33 // manually fetched from the network stack and then flattened and loaded into |
| 34 // the web view. |
| 35 // |
| 36 // To flatten the WebUI resources, tags for JS and CSS resources are replaced |
| 37 // with retrieved resources. For example, if a WebUI HTML resource looks like: |
| 38 // <html> |
| 39 // <script src='chrome://javascript.js></script> |
| 40 // <link rel="stylesheet" href="chrome://stylesheet.css"> |
| 41 // </html> |
| 42 // the flattened version would look like: |
| 43 // <html> |
| 44 // <script>[Content of chrome://javascript.js]</script> |
| 45 // <style>[Content of chrome://stylesheet.css]</style> |
| 46 // </html> |
| 47 @interface CRWWebUIPageBuilder : NSObject |
| 48 |
| 49 // Designated initializer. |
| 50 - (instancetype)initWithDelegate:(id<CRWWebUIPageBuilderDelegate>)delegate; |
| 51 |
| 52 // Builds and flattens page for webUIURL, and invokes completionHandler with the |
| 53 // result. |
| 54 - (void)buildWebUIPageForURL:(const GURL&)webUIURL |
| 55 completionHandler:(web::WebUIPageCompletion)completionHandler; |
| 56 |
| 57 @end |
| 58 |
| 59 #endif // IOS_WEB_WEBUI_CRW_WEB_UI_PAGE_BUILDER_H_ |
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Chromium Code Reviews
Issue 1110213002:
Upstream most of the iOS WebUI support in ios/web/ (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master