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content / browser / webui / web_ui_message_handler.cc [blame]
// Copyright 2012 The Chromium Authors
// 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/check.h"
#include "base/notreached.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() {
return javascript_allowed_ && web_ui() && web_ui()->CanCallJavascript();
}
void WebUIMessageHandler::ResolveJavascriptCallback(
const base::ValueView callback_id,
const base::ValueView 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::ValueView callback_id,
const base::ValueView response) {
// cr.webUIResponse is a global JS function exposed from cr.js.
CallJavascriptFunction("cr.webUIResponse", callback_id, base::Value(false),
response);
}
} // namespace content