react-native/React/Base/RCTKeyboardObserver.m

105 lines
3.1 KiB
Objective-C

/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
#import "RCTKeyboardObserver.h"
#import "RCTEventDispatcher.h"
static NSDictionary *RCTParseKeyboardNotification(NSNotification *notification);
@implementation RCTKeyboardObserver
@synthesize bridge = _bridge;
RCT_EXPORT_MODULE()
- (void)setBridge:(RCTBridge *)bridge
{
_bridge = bridge;
NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
#define ADD_KEYBOARD_HANDLER(NAME, SELECTOR) \
[nc addObserver:self selector:@selector(SELECTOR:) name:NAME object:nil]
ADD_KEYBOARD_HANDLER(UIKeyboardWillShowNotification, keyboardWillShow);
ADD_KEYBOARD_HANDLER(UIKeyboardDidShowNotification, keyboardDidShow);
ADD_KEYBOARD_HANDLER(UIKeyboardWillHideNotification, keyboardWillHide);
ADD_KEYBOARD_HANDLER(UIKeyboardDidHideNotification, keyboardDidHide);
ADD_KEYBOARD_HANDLER(UIKeyboardWillChangeFrameNotification, keyboardWillChangeFrame);
ADD_KEYBOARD_HANDLER(UIKeyboardDidChangeFrameNotification, keyboardDidChangeFrame);
#undef ADD_KEYBOARD_HANDLER
}
- (void)dealloc
{
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
#define IMPLEMENT_KEYBOARD_HANDLER(EVENT) \
- (void)EVENT:(NSNotification *)notification \
{ \
[_bridge.eventDispatcher \
sendDeviceEventWithName:@#EVENT \
body:RCTParseKeyboardNotification(notification)]; \
}
IMPLEMENT_KEYBOARD_HANDLER(keyboardWillShow)
IMPLEMENT_KEYBOARD_HANDLER(keyboardDidShow)
IMPLEMENT_KEYBOARD_HANDLER(keyboardWillHide)
IMPLEMENT_KEYBOARD_HANDLER(keyboardDidHide)
IMPLEMENT_KEYBOARD_HANDLER(keyboardWillChangeFrame)
IMPLEMENT_KEYBOARD_HANDLER(keyboardDidChangeFrame)
@end
NS_INLINE NSDictionary *RCTRectDictionaryValue(CGRect rect)
{
return @{
@"screenX": @(rect.origin.x),
@"screenY": @(rect.origin.y),
@"width": @(rect.size.width),
@"height": @(rect.size.height),
};
}
static NSString *RCTAnimationNameForCurve(UIViewAnimationCurve curve)
{
switch (curve) {
case UIViewAnimationCurveEaseIn:
return @"easeIn";
case UIViewAnimationCurveEaseInOut:
return @"easeInEaseOut";
case UIViewAnimationCurveEaseOut:
return @"easeOut";
case UIViewAnimationCurveLinear:
return @"linear";
default:
return @"keyboard";
}
}
static NSDictionary *RCTParseKeyboardNotification(NSNotification *notification)
{
NSDictionary *userInfo = notification.userInfo;
CGRect beginFrame = [userInfo[UIKeyboardFrameBeginUserInfoKey] CGRectValue];
CGRect endFrame = [userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue];
NSTimeInterval duration = [userInfo[UIKeyboardAnimationDurationUserInfoKey] doubleValue];
UIViewAnimationCurve curve = [userInfo[UIKeyboardAnimationCurveUserInfoKey] integerValue];
return @{
@"startCoordinates": RCTRectDictionaryValue(beginFrame),
@"endCoordinates": RCTRectDictionaryValue(endFrame),
@"duration": @(duration * 1000.0), // ms
@"easing": RCTAnimationNameForCurve(curve),
};
}