// Copyright 2017 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_BROWSER_WINDOW_TOUCH_BAR_MAC_H_
#define CHROME_BROWSER_UI_BROWSER_WINDOW_TOUCH_BAR_MAC_H_

#import <Cocoa/Cocoa.h>

#include "base/mac/availability.h"
#import "ui/base/cocoa/touch_bar_forward_declarations.h"

class BookmarkTabHelperObserver;
class Browser;
@class BrowserWindowController;

// Provides a touch bar for the browser window. This class implements the
// NSTouchBarDelegate and handles the items in the touch bar.
@interface BrowserWindowTouchBar : NSObject<NSTouchBarDelegate>
// True is the current page is loading. Used to determine if a stop or reload
// button should be provided.
@property(nonatomic, assign) BOOL isPageLoading;

// True if the current page is starred. Used by star touch bar button.
@property(nonatomic, assign) BOOL isStarred;

// Designated initializer.
- (instancetype)initWithBrowser:(Browser*)browser window:(NSWindow*)window;

// Creates and returns a touch bar for the browser window.
- (NSTouchBar*)makeTouchBar API_AVAILABLE(macos(10.12.2));

// Invalidate the browser window touch bar by setting |window_|'s touch bar to
// nil.
- (void)invalidateTouchBar;

// Updates the back/forward button. Called when creating the touch bar or when
// the back and forward commands have changed.
- (void)updateBackForwardControl;

@end

// Private methods exposed for testing.
@interface BrowserWindowTouchBar (ExposedForTesting)

// Updates the reload/stop button. Called when creating the touch bar or the
// page load state has been updated.
- (void)updateReloadStopButton;

// Returns the reload/stop button on the touch bar. Creates it if it's null.
- (NSButton*)reloadStopButton;

// Returns the back/forward segmented control on the touch bar. Creates it if
// it's null.
- (NSSegmentedControl*)backForwardControl;

// Returns the bridge object that BrowserWindowTouchBar uses to receive
// notifications.
- (BookmarkTabHelperObserver*)bookmarkTabObserver;

@end

#endif  // CHROME_BROWSER_UI_COCOA_BROWSER_WINDOW_TOUCH_BAR_H_