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// 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.
#ifndef CHROME_BROWSER_EXTENSIONS_SCRIPT_BADGE_CONTROLLER_H_
#define CHROME_BROWSER_EXTENSIONS_SCRIPT_BADGE_CONTROLLER_H_
#pragma once
#include <map>
#include <set>
#include <string>
#include "base/memory/linked_ptr.h"
#include "chrome/browser/extensions/location_bar_controller.h"
#include "chrome/browser/extensions/script_executor.h"
#include "chrome/browser/extensions/script_executor_impl.h"
#include "content/public/browser/web_contents_observer.h"
class ExtensionAction;
class ExtensionService;
class TabContentsWrapper;
namespace extensions {
class Extension;
// An LocationBarController which displays icons whenever a script is executing
// in a tab. It accomplishes this two different ways:
//
// - For content_script declarations, the current URL in the tab is compared to
// registered content scripts when GetCurrentActions() is called.
// - An interface is exposed for programmatically executing scripts. Executed
// scripts are recorded and used later to populate GetCurrentActions().
//
// TODO(aa): There are some edge cases that need to be thought-through here:
//
// - Redirects. In this case, I think we may flicker the icons in the url bar
// as we bounce from URL to URL, without any script actually being executed.
// - Frames. This won't show icons for content_scripts running in frames. Should
// it?
// - Possibly other weirdness where the state here doesn't match the state in
// the renderer for whatever reason.
class ScriptBadgeController : public LocationBarController,
public ScriptExecutor,
public content::WebContentsObserver {
public:
explicit ScriptBadgeController(TabContentsWrapper* tab_contents);
virtual ~ScriptBadgeController();
// LocationBarController implementation.
virtual scoped_ptr<std::vector<ExtensionAction*> > GetCurrentActions()
OVERRIDE;
virtual Action OnClicked(const std::string& extension_id,
int mouse_button) OVERRIDE;
// ScriptExecutor implementation.
virtual void ExecuteScript(const std::string& extension_id,
ScriptType script_type,
const std::string& code,
FrameScope frame_scope,
UserScript::RunLocation run_at,
WorldType world_type,
const ExecuteScriptCallback& callback) OVERRIDE;
// content::WebContentsObserver implementation.
virtual void DidNavigateMainFrame(
const content::LoadCommittedDetails& details,
const content::FrameNavigateParams& params) OVERRIDE;
private:
// Gets the ExtensionService for |tab_contents_|.
ExtensionService* GetExtensionService();
// Delegate ScriptExecutorImpl for running ExecuteScript.
ScriptExecutorImpl script_executor_;
// Our parent TabContentsWrapper.
TabContentsWrapper* tab_contents_;
// The extensions that have called ExecuteScript on the current frame.
std::set<std::string> extensions_executing_scripts_;
DISALLOW_COPY_AND_ASSIGN(ScriptBadgeController);
};
} // namespace extensions
#endif // CHROME_BROWSER_EXTENSIONS_SCRIPT_BADGE_CONTROLLER_H_
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