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// Copyright (c) 2009 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.
// Defines AutomationExtensionFunction.
#ifndef CHROME_BROWSER_AUTOMATION_AUTOMATION_EXTENSION_FUNCTION_H_
#define CHROME_BROWSER_AUTOMATION_AUTOMATION_EXTENSION_FUNCTION_H_
#include <map>
#include <string>
#include <vector>
#include "chrome/browser/extensions/extension_function.h"
class RenderViewHost;
class TabContents;
// An extension function that pipes the extension API call through the
// automation interface, so that extensions can be tested using UITests.
class AutomationExtensionFunction : public AsyncExtensionFunction {
public:
AutomationExtensionFunction() { }
// ExtensionFunction implementation.
virtual void SetArgs(const ListValue* args);
virtual const std::string GetResult();
virtual bool RunImpl();
static ExtensionFunction* Factory();
// Enable API automation of selected APIs. Overridden extension API messages
// will be routed to the automation client attached to |api_handler_tab|.
//
// If the list of enabled functions is non-empty, we enable according to the
// list ("*" means enable all, otherwise we enable individual named
// functions). An empty list makes this function a no-op.
//
// Note that all calls to this function are additive. Functions previously
// enabled will remain enabled until you call Disable().
//
// Calling this function after enabling one or more functions with a
// tab other than the one previously used is an error.
static void Enable(TabContents* api_handler_tab,
const std::vector<std::string>& functions_enabled);
// Restore the default API function implementations and reset the stored
// API handler.
static void Disable();
// Intercepts messages sent from the external host to check if they
// are actually responses to extension API calls. If they are, redirects
// the message to respond to the pending asynchronous API call and returns
// true, otherwise returns false to indicate the message was not intercepted.
static bool InterceptMessageFromExternalHost(RenderViewHost* view_host,
const std::string& message,
const std::string& origin,
const std::string& target);
private:
~AutomationExtensionFunction() {}
// Weak reference, lifetime managed by the ExternalTabContainer instance
// owning the TabContents in question.
static TabContents* api_handler_tab_;
typedef std::map<int, scoped_refptr<AutomationExtensionFunction> >
PendingFunctionsMap;
static PendingFunctionsMap pending_functions_;
std::string args_;
std::string json_result_;
DISALLOW_COPY_AND_ASSIGN(AutomationExtensionFunction);
};
#endif // CHROME_BROWSER_AUTOMATION_AUTOMATION_EXTENSION_FUNCTION_H_
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