1 // Copyright (c) 2011 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_ANIMATABLE_VIEW_H_ 6 #define CHROME_BROWSER_UI_COCOA_ANIMATABLE_VIEW_H_ 7 #pragma once 8 9 #import <Cocoa/Cocoa.h> 10 11 #import "base/mac/cocoa_protocols.h" 12 #include "base/memory/scoped_nsobject.h" 13 #import "chrome/browser/ui/cocoa/background_gradient_view.h" 14 #import "chrome/browser/ui/cocoa/view_resizer.h" 15 16 // A view that provides an animatable height property. Provides methods to 17 // animate to a new height, set a new height immediately, or cancel any running 18 // animations. 19 // 20 // AnimatableView sends an |animationDidEnd:| message to its delegate when the 21 // animation ends normally and an |animationDidStop:| message when the animation 22 // was canceled (even when canceled as a result of a new animation starting). 23 24 @interface AnimatableView : BackgroundGradientView<NSAnimationDelegate> { 25 @protected 26 IBOutlet id delegate_; // weak, used to send animation ended messages. 27 28 @private 29 scoped_nsobject<NSAnimation> currentAnimation_; 30 id<ViewResizer> resizeDelegate_; // weak, usually owns us 31 } 32 33 // Properties for bindings. 34 @property(assign, nonatomic) id delegate; 35 @property(assign, nonatomic) id<ViewResizer> resizeDelegate; 36 37 // Gets the current height of the view. If an animation is currently running, 38 // this will give the current height at the time of the call, not the target 39 // height at the end of the animation. 40 - (CGFloat)height; 41 42 // Sets the height of the view immediately. Cancels any running animations. 43 - (void)setHeight:(CGFloat)newHeight; 44 45 // Starts a new animation to the given |newHeight| for the given |duration|. 46 // Cancels any running animations. 47 - (void)animateToNewHeight:(CGFloat)newHeight 48 duration:(NSTimeInterval)duration; 49 50 // Cancels any running animations, leaving the view at its current 51 // (mid-animation) height. 52 - (void)stopAnimation; 53 54 // Gets the progress of any current animation. 55 - (NSAnimationProgress)currentAnimationProgress; 56 57 @end 58 59 #endif // CHROME_BROWSER_UI_COCOA_ANIMATABLE_VIEW_H_ 60
