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