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// Copyright 2016 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_UI_TOOLBAR_MEDIA_ROUTER_ACTION_CONTROLLER_H_
#define CHROME_BROWSER_UI_TOOLBAR_MEDIA_ROUTER_ACTION_CONTROLLER_H_
#include <vector>
#include "chrome/browser/extensions/component_migration_helper.h"
#include "chrome/browser/media/router/issues_observer.h"
#include "chrome/browser/media/router/media_routes_observer.h"
#include "chrome/browser/profiles/profile.h"
#include "components/prefs/pref_change_registrar.h"
using extensions::ComponentMigrationHelper;
// Controller for MediaRouterAction that determines when to show and hide the
// action icon on the toolbar. There should be one instance of this class per
// profile, and it should only be used on the UI thread.
class MediaRouterActionController : public media_router::IssuesObserver,
public media_router::MediaRoutesObserver {
public:
explicit MediaRouterActionController(Profile* profile);
// Constructor for injecting dependencies in tests.
MediaRouterActionController(
Profile* profile,
media_router::MediaRouter* router,
ComponentMigrationHelper::ComponentActionDelegate*
component_action_delegate,
ComponentMigrationHelper* component_migration_helper);
~MediaRouterActionController() override;
// media_router::IssuesObserver:
void OnIssue(const media_router::Issue& issue) override;
void OnIssuesCleared() override;
// media_router::MediaRoutesObserver:
void OnRoutesUpdated(const std::vector<media_router::MediaRoute>& routes,
const std::vector<media_router::MediaRoute::Id>&
joinable_route_ids) override;
// Called when a Media Router dialog is shown or hidden, and updates the
// visibility of the action icon. Overridden in tests.
virtual void OnDialogShown();
virtual void OnDialogHidden();
private:
friend class MediaRouterActionControllerUnitTest;
FRIEND_TEST_ALL_PREFIXES(MediaRouterActionControllerUnitTest,
EphemeralIconForRoutesAndIssues);
FRIEND_TEST_ALL_PREFIXES(MediaRouterActionControllerUnitTest,
EphemeralIconForDialog);
// Adds or removes the Media Router action icon to/from
// |component_action_delegate_| if necessary, depending on whether or not
// we have issues, local routes or a dialog.
virtual void MaybeAddOrRemoveAction();
// Returns |true| if the Media Router action should be present on the toolbar
// or the overflow menu.
bool ShouldEnableAction() const;
// The profile |this| is associated with. There should be one instance of this
// class per profile.
Profile* const profile_;
// The delegate that is responsible for showing and hiding the icon on the
// toolbar. It outlives |this|.
ComponentMigrationHelper::ComponentActionDelegate* const
component_action_delegate_;
// Responsible for changing the pref to always show or hide component actions.
// It is owned by ToolbarActionsModel and outlives |this|.
ComponentMigrationHelper* const component_migration_helper_;
bool has_issue_ = false;
bool has_local_display_route_ = false;
// The number of dialogs that are currently open.
size_t dialog_count_ = 0;
PrefChangeRegistrar pref_change_registrar_;
DISALLOW_COPY_AND_ASSIGN(MediaRouterActionController);
};
#endif // CHROME_BROWSER_UI_TOOLBAR_MEDIA_ROUTER_ACTION_CONTROLLER_H_
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