| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "content/public/browser/web_ui_message_handler.h" |
| |
| #include "base/logging.h" |
| #include "base/strings/string_number_conversions.h" |
| #include "base/strings/utf_string_conversions.h" |
| #include "base/values.h" |
| |
| namespace content { |
| |
| void WebUIMessageHandler::AllowJavascriptForTesting() { |
| AllowJavascript(); |
| } |
| |
| void WebUIMessageHandler::AllowJavascript() { |
| if (javascript_allowed_) |
| return; |
| |
| javascript_allowed_ = true; |
| CHECK(IsJavascriptAllowed()); |
| |
| OnJavascriptAllowed(); |
| } |
| |
| void WebUIMessageHandler::DisallowJavascript() { |
| if (!javascript_allowed_) |
| return; |
| |
| javascript_allowed_ = false; |
| DCHECK(!IsJavascriptAllowed()); |
| |
| OnJavascriptDisallowed(); |
| } |
| |
| bool WebUIMessageHandler::IsJavascriptAllowed() const { |
| return javascript_allowed_ && web_ui() && web_ui()->CanCallJavascript(); |
| } |
| |
| bool WebUIMessageHandler::ExtractIntegerValue(const base::ListValue* value, |
| int* out_int) { |
| std::string string_value; |
| if (value->GetString(0, &string_value)) |
| return base::StringToInt(string_value, out_int); |
| double double_value; |
| if (value->GetDouble(0, &double_value)) { |
| *out_int = static_cast<int>(double_value); |
| return true; |
| } |
| NOTREACHED(); |
| return false; |
| } |
| |
| bool WebUIMessageHandler::ExtractDoubleValue(const base::ListValue* value, |
| double* out_value) { |
| std::string string_value; |
| if (value->GetString(0, &string_value)) |
| return base::StringToDouble(string_value, out_value); |
| if (value->GetDouble(0, out_value)) |
| return true; |
| NOTREACHED(); |
| return false; |
| } |
| |
| base::string16 WebUIMessageHandler::ExtractStringValue( |
| const base::ListValue* value) { |
| base::string16 string16_value; |
| if (value->GetString(0, &string16_value)) |
| return string16_value; |
| NOTREACHED(); |
| return base::string16(); |
| } |
| |
| void WebUIMessageHandler::ResolveJavascriptCallback( |
| const base::Value& callback_id, |
| const base::Value& response) { |
| // cr.webUIResponse is a global JS function exposed from cr.js. |
| CallJavascriptFunction("cr.webUIResponse", callback_id, base::Value(true), |
| response); |
| } |
| |
| void WebUIMessageHandler::RejectJavascriptCallback( |
| const base::Value& callback_id, |
| const base::Value& response) { |
| // cr.webUIResponse is a global JS function exposed from cr.js. |
| CallJavascriptFunction("cr.webUIResponse", callback_id, base::Value(false), |
| response); |
| } |
| |
| } // namespace content |