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// 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.
#ifndef CHROME_BROWSER_UI_COCOA_HISTORY_OVERLAY_CONTROLLER_H_
#define CHROME_BROWSER_UI_COCOA_HISTORY_OVERLAY_CONTROLLER_H_
#import <Cocoa/Cocoa.h>
@class HistoryOverlayView;
enum HistoryOverlayMode { kHistoryOverlayModeBack, kHistoryOverlayModeForward };
// The HistoryOverlayController manages a view that is inserted atop the web
// contents to provide visual feedback when the user is performing history
// navigation gestures.
@interface HistoryOverlayController : NSViewController
// Designated initializer.
- (instancetype)initForMode:(HistoryOverlayMode)mode;
// Shows the shield above |view|.
- (void)showPanelForView:(NSView*)view;
// Updates the appearance of the overlay based on track gesture progress.
// gestureAmount must be between 0 and 1.
// 0 indicates no progress. 1 indicates maximum progress.
// Finished indicates whether the gesture has reached maximum progress.
- (void)setProgress:(CGFloat)gestureAmount finished:(BOOL)finished;
// Fades the shield out and removes it from the view hierarchy.
- (void)dismiss;
@end
#endif // CHROME_BROWSER_UI_COCOA_HISTORY_OVERLAY_CONTROLLER_H_
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