| /* |
| * Copyright (C) 2018 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| * THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #if PLATFORM(IOS_FAMILY) |
| |
| namespace WebCore { |
| class FloatPoint; |
| } |
| |
| namespace WebKit { |
| |
| enum class ScrollingIncrement : uint8_t { |
| Document, |
| Page, |
| Line |
| }; |
| |
| enum class ScrollingDirection : uint8_t { |
| Up, |
| Down, |
| Left, |
| Right |
| }; |
| |
| } |
| |
| @class UIScrollView; |
| @class WebEvent; |
| @protocol WKKeyboardScrollViewAnimatorDelegate; |
| |
| @interface WKKeyboardScrollViewAnimator : NSObject |
| |
| - (instancetype)init NS_UNAVAILABLE; |
| - (instancetype)initWithScrollView:(UIScrollView *)scrollView; |
| |
| - (void)invalidate; |
| |
| - (void)willStartInteractiveScroll; |
| |
| - (BOOL)beginWithEvent:(::WebEvent *)event; |
| - (void)handleKeyEvent:(::WebEvent *)event; |
| |
| - (BOOL)scrollTriggeringKeyIsPressed; |
| |
| @property (nonatomic, weak) id <WKKeyboardScrollViewAnimatorDelegate> delegate; |
| |
| @end |
| |
| @protocol WKKeyboardScrollViewAnimatorDelegate <NSObject> |
| @optional |
| - (BOOL)isScrollableForKeyboardScrollViewAnimator:(WKKeyboardScrollViewAnimator *)animator; |
| - (CGFloat)keyboardScrollViewAnimator:(WKKeyboardScrollViewAnimator *)animator distanceForIncrement:(WebKit::ScrollingIncrement)increment inDirection:(WebKit::ScrollingDirection)direction; |
| - (void)keyboardScrollViewAnimatorWillScroll:(WKKeyboardScrollViewAnimator *)animator; |
| - (void)keyboardScrollViewAnimatorDidFinishScrolling:(WKKeyboardScrollViewAnimator *)animator; |
| |
| @end |
| |
| #endif // PLATFORM(IOS_FAMILY) |