ios/web/web_state/ui/crw_touch_tracking_recognizer.mm

   1 // Copyright 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 #import "ios/web/web_state/ui/crw_touch_tracking_recognizer.h"
   6
   7 @interface CRWTouchTrackingRecognizer () <UIGestureRecognizerDelegate> {
   8   __weak id<CRWTouchTrackingDelegate> _delegate;
   9 }
  10 @end
  11
  12 @implementation CRWTouchTrackingRecognizer
  13
  14 @synthesize touchTrackingDelegate = _delegate;
  15
  16 - (id)initWithDelegate:(id<CRWTouchTrackingDelegate>)delegate {
  17   if ((self = [super init])) {
  18     _delegate = delegate;
  19     self.delegate = self;
  20   }
  21   return self;
  22 }
  23
  24 #pragma mark -
  25 #pragma mark UIGestureRecognizer Methods
  26
  27 - (void)reset {
  28   [super reset];
  29 }
  30
  31 - (void)touchesBegan:(NSSet*)touches withEvent:(UIEvent*)event {
  32   [super touchesBegan:touches withEvent:event];
  33   [_delegate touched:YES];
  34 }
  35
  36 - (void)touchesMoved:(NSSet*)touches withEvent:(UIEvent*)event {
  37   [super touchesMoved:touches withEvent:event];
  38 }
  39
  40 - (void)touchesEnded:(NSSet*)touches withEvent:(UIEvent*)event {
  41   [super touchesEnded:touches withEvent:event];
  42   self.state = UIGestureRecognizerStateFailed;
  43   [_delegate touched:NO];
  44 }
  45
  46 - (void)touchesCancelled:(NSSet*)touches withEvent:(UIEvent*)event {
  47   [super touchesCancelled:touches withEvent:event];
  48   [_delegate touched:NO];
  49 }
  50
  51 #pragma mark -
  52 #pragma mark UIGestureRecognizerDelegate Method
  53
  54 - (BOOL)gestureRecognizer:(UIGestureRecognizer*)gestureRecognizer
  55     shouldRecognizeSimultaneouslyWithGestureRecognizer:
  56         (UIGestureRecognizer*)otherGestureRecognizer {
  57   return YES;
  58 }
  59
  60 @end