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| 1 // Copyright 2013 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 #include "chrome/browser/safe_json_parser.h" | |
| 6 | |
| 7 #include "chrome/common/chrome_utility_messages.h" | |
| 8 #include "chrome/grit/generated_resources.h" | |
| 9 #include "content/public/browser/browser_thread.h" | |
| 10 #include "content/public/browser/utility_process_host.h" | |
| 11 #include "ui/base/l10n/l10n_util.h" | |
| 12 | |
| 13 using content::BrowserThread; | |
| 14 using content::UtilityProcessHost; | |
| 15 | |
| 16 SafeJsonParser::SafeJsonParser(const std::string& unsafe_json, | |
| 17 const SuccessCallback& success_callback, | |
| 18 const ErrorCallback& error_callback) | |
| 19 : unsafe_json_(unsafe_json), | |
| 20 success_callback_(success_callback), | |
| 21 error_callback_(error_callback) {} | |
| 22 | |
| 23 void SafeJsonParser::Start() { | |
| 24 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); | |
| 25 BrowserThread::PostTask( | |
| 26 BrowserThread::IO, | |
| 27 FROM_HERE, | |
| 28 base::Bind(&SafeJsonParser::StartWorkOnIOThread, this)); | |
| 29 } | |
| 30 | |
| 31 SafeJsonParser::~SafeJsonParser() {} | |
| 32 | |
| 33 void SafeJsonParser::StartWorkOnIOThread() { | |
| 34 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); | |
| 35 UtilityProcessHost* host = | |
| 36 UtilityProcessHost::Create(this, base::MessageLoopProxy::current().get()); | |
| 37 host->SetName(l10n_util::GetStringUTF16( | |
| 38 IDS_UTILITY_PROCESS_JSON_PARSER_NAME)); | |
| 39 host->Send(new ChromeUtilityMsg_ParseJSON(unsafe_json_)); | |
| 40 } | |
| 41 | |
| 42 void SafeJsonParser::OnJSONParseSucceeded(const base::ListValue& wrapper) { | |
| 43 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); | |
| 44 const base::Value* value = NULL; | |
| 45 CHECK(wrapper.Get(0, &value)); | |
| 46 | |
| 47 parsed_json_.reset(value->DeepCopy()); | |
| 48 ReportResults(); | |
| 49 } | |
| 50 | |
| 51 void SafeJsonParser::OnJSONParseFailed(const std::string& error_message) { | |
| 52 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); | |
| 53 error_ = error_message; | |
| 54 ReportResults(); | |
| 55 } | |
| 56 | |
| 57 void SafeJsonParser::ReportResults() { | |
| 58 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); | |
| 59 | |
| 60 BrowserThread::PostTask( | |
| 61 BrowserThread::UI, | |
| 62 FROM_HERE, | |
| 63 base::Bind(&SafeJsonParser::ReportResultOnUIThread, this)); | |
| 64 } | |
| 65 | |
| 66 void SafeJsonParser::ReportResultOnUIThread() { | |
| 67 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); | |
| 68 if (error_.empty() && parsed_json_) { | |
| 69 if (!success_callback_.is_null()) | |
| 70 success_callback_.Run(parsed_json_.Pass()); | |
| 71 } else { | |
| 72 if (!error_callback_.is_null()) | |
| 73 error_callback_.Run(error_); | |
| 74 } | |
| 75 } | |
| 76 | |
| 77 bool SafeJsonParser::OnMessageReceived(const IPC::Message& message) { | |
| 78 bool handled = true; | |
| 79 IPC_BEGIN_MESSAGE_MAP(SafeJsonParser, message) | |
| 80 IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_ParseJSON_Succeeded, | |
| 81 OnJSONParseSucceeded) | |
| 82 IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_ParseJSON_Failed, | |
| 83 OnJSONParseFailed) | |
| 84 IPC_MESSAGE_UNHANDLED(handled = false) | |
| 85 IPC_END_MESSAGE_MAP() | |
| 86 return handled; | |
| 87 } | |
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Chromium Code Reviews
Issue 1140053003:
Refactoring: Moving the SafeJsonParser to its own component. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master