| 33 | } |
| 34 | |
| 35 | function _onTouchMove(e) { |
| 36 | if (!(_el && _el.ptrElement && _shared.enable)) { |
| 37 | return; |
| 38 | } |
| 39 | |
| 40 | if (!_shared.pullStartY) { |
| 41 | if (_el.shouldPullToRefresh()) { |
| 42 | _shared.pullStartY = screenY(e); |
| 43 | } |
| 44 | } else { |
| 45 | _shared.pullMoveY = screenY(e); |
| 46 | } |
| 47 | |
| 48 | if (_shared.state === 'refreshing') { |
| 49 | if (e.cancelable && _el.shouldPullToRefresh() && _shared.pullStartY < _shared.pullMoveY) { |
| 50 | e.preventDefault(); |
| 51 | } |
| 52 | |
| 53 | return; |
| 54 | } |
| 55 | |
| 56 | if (_shared.state === 'pending') { |
| 57 | _el.ptrElement.classList.add(`${_el.classPrefix}pull`); |
| 58 | _shared.state = 'pulling'; |
| 59 | _ptr.update(_el); |
| 60 | } |
| 61 | |
| 62 | if (_shared.pullStartY && _shared.pullMoveY) { |
| 63 | _shared.dist = _shared.pullMoveY - _shared.pullStartY; |
| 64 | } |
| 65 | |
| 66 | _shared.distExtra = _shared.dist - _el.distIgnore; |
| 67 | |
| 68 | if (_shared.distExtra > 0) { |
| 69 | if (e.cancelable) { |
| 70 | e.preventDefault(); |
| 71 | } |
| 72 | |
| 73 | _el.ptrElement.style[_el.cssProp] = `${_shared.distResisted}px`; |
| 74 | |
| 75 | _shared.distResisted = _el.resistanceFunction(_shared.distExtra / _el.distThreshold) |
| 76 | * Math.min(_el.distMax, _shared.distExtra); |
| 77 | |
| 78 | if (_shared.state === 'pulling' && _shared.distResisted > _el.distThreshold) { |
| 79 | _el.ptrElement.classList.add(`${_el.classPrefix}release`); |
| 80 | _shared.state = 'releasing'; |
| 81 | _ptr.update(_el); |
| 82 | } |
| 83 | |
| 84 | if (_shared.state === 'releasing' && _shared.distResisted < _el.distThreshold) { |
| 85 | _el.ptrElement.classList.remove(`${_el.classPrefix}release`); |
| 86 | _shared.state = 'pulling'; |
| 87 | _ptr.update(_el); |
| 88 | } |
| 89 | } |
| 90 | } |
| 91 | |
| 92 | function _onTouchEnd() { |