index.js
3.1 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
import { VantComponent } from '../common/component';
import { touch } from '../mixins/touch';
import { range } from '../common/utils';
const THRESHOLD = 0.3;
let ARRAY = [];
VantComponent({
props: {
disabled: Boolean,
leftWidth: {
type: Number,
value: 0,
observer(leftWidth = 0) {
if (this.offset > 0) {
this.swipeMove(leftWidth);
}
},
},
rightWidth: {
type: Number,
value: 0,
observer(rightWidth = 0) {
if (this.offset < 0) {
this.swipeMove(-rightWidth);
}
},
},
asyncClose: Boolean,
name: {
type: [Number, String],
value: '',
},
},
mixins: [touch],
data: {
catchMove: false,
wrapperStyle: '',
},
created() {
this.offset = 0;
ARRAY.push(this);
},
destroyed() {
ARRAY = ARRAY.filter((item) => item !== this);
},
methods: {
open(position) {
const { leftWidth, rightWidth } = this.data;
const offset = position === 'left' ? leftWidth : -rightWidth;
this.swipeMove(offset);
this.$emit('open', {
position,
name: this.data.name,
});
},
close() {
this.swipeMove(0);
},
swipeMove(offset = 0) {
this.offset = range(offset, -this.data.rightWidth, this.data.leftWidth);
const transform = `translate3d(${this.offset}px, 0, 0)`;
const transition = this.dragging
? 'none'
: 'transform .6s cubic-bezier(0.18, 0.89, 0.32, 1)';
this.setData({
wrapperStyle: `
-webkit-transform: ${transform};
-webkit-transition: ${transition};
transform: ${transform};
transition: ${transition};
`,
});
},
swipeLeaveTransition() {
const { leftWidth, rightWidth } = this.data;
const { offset } = this;
if (rightWidth > 0 && -offset > rightWidth * THRESHOLD) {
this.open('right');
} else if (leftWidth > 0 && offset > leftWidth * THRESHOLD) {
this.open('left');
} else {
this.swipeMove(0);
}
this.setData({ catchMove: false });
},
startDrag(event) {
if (this.data.disabled) {
return;
}
this.startOffset = this.offset;
this.touchStart(event);
},
noop() {},
onDrag(event) {
if (this.data.disabled) {
return;
}
this.touchMove(event);
if (this.direction !== 'horizontal') {
return;
}
this.dragging = true;
ARRAY.filter((item) => item !== this).forEach((item) => item.close());
this.setData({ catchMove: true });
this.swipeMove(this.startOffset + this.deltaX);
},
endDrag() {
if (this.data.disabled) {
return;
}
this.dragging = false;
this.swipeLeaveTransition();
},
onClick(event) {
const { key: position = 'outside' } = event.currentTarget.dataset;
this.$emit('click', position);
if (!this.offset) {
return;
}
if (this.data.asyncClose) {
this.$emit('close', {
position,
instance: this,
name: this.data.name,
});
} else {
this.swipeMove(0);
}
},
},
});