1// Copyright (c) 2012 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#ifndef CHROME_BROWSER_UI_COCOA_OVERLAY_PANEL_CONTROLLER_H_ 6#define CHROME_BROWSER_UI_COCOA_OVERLAY_PANEL_CONTROLLER_H_ 7 8#import <Cocoa/Cocoa.h> 9 10#include "base/mac/scoped_nsobject.h" 11 12@class HistoryOverlayView; 13 14enum HistoryOverlayMode { 15 kHistoryOverlayModeBack, 16 kHistoryOverlayModeForward 17}; 18 19// The HistoryOverlayController manages a view that is inserted atop the web 20// contents to provide visual feedback when the user is performing history 21// navigation gestures. 22@interface HistoryOverlayController : NSViewController { 23 @private 24 HistoryOverlayMode mode_; 25 // Strongly typed reference of self.view. 26 base::scoped_nsobject<HistoryOverlayView> contentView_; 27 // The view above which self.view is inserted as a subview. 28 base::scoped_nsobject<NSView> parent_; 29} 30 31// Designated initializer. 32- (id)initForMode:(HistoryOverlayMode)mode; 33 34// Shows the shield above |view|. 35- (void)showPanelForView:(NSView*)view; 36 37// Updates the appearance of the overlay based on track gesture progress. 38// gestureAmount must be between 0 and 1. 39// 0 indicates no progress. 1 indicates maximum progress. 40// Finished indicates whether the gesture has reached maximum progress. 41- (void)setProgress:(CGFloat)gestureAmount finished:(BOOL)finished; 42 43// Fades the shield out and removes it from the view hierarchy. 44- (void)dismiss; 45 46@end 47 48#endif // CHROME_BROWSER_UI_COCOA_OVERLAY_PANEL_CONTROLLER_H_ 49