-
Notifications
You must be signed in to change notification settings - Fork 7
/
PullToRefreshLoadingLayout.js
170 lines (144 loc) · 4.83 KB
/
PullToRefreshLoadingLayout.js
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
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
import React, {Component, PropTypes} from 'react';
import {
View,
Text,
ScrollView,
Dimensions,
StyleSheet,
requireNativeComponent,
} from 'react-native';
import PULL_TO_REFRESH_STATE from '../global/PullToRefreshState';
const STATE_RESET = PULL_TO_REFRESH_STATE.STATE_RESET;
const STATE_PULL_TO_REFRESH = PULL_TO_REFRESH_STATE.STATE_PULL_TO_REFRESH;
const STATE_RELEASE_TO_REFRESH = PULL_TO_REFRESH_STATE.STATE_RELEASE_TO_REFRESH;
const STATE_REFRESHING = PULL_TO_REFRESH_STATE.STATE_REFRESHING;
const STATE_MANUAL_REFRESHING = PULL_TO_REFRESH_STATE.STATE_MANUAL_REFRESHING;
const STATE_OVERSCROLLING = PULL_TO_REFRESH_STATE.STATE_OVERSCROLLING;
import CircularProgressBarSvg from './CircularProgressBarSvg';
export default class PullToRefreshLoadingLayout extends Component {
constructor(props) {
super(props);
this.state = {
viewWidth: 0,
viewHeight: 0,
pullToRefreshState: STATE_RESET,
loadingLayoutScrollPositionRatio: 0,
}
}
static propTypes = {
minDraggedDistanceToRefresh: React.PropTypes.number.isRequired,
pullToRefreshState: React.PropTypes.string.isRequired,
loadingLayoutScrollPositionRatio: React.PropTypes.number.isRequired,
};
static defaultProps = {
pullToRefreshState: STATE_RESET,
loadingLayoutScrollPositionRatio: 0,
};
componentWillReceiveProps(nextProps) {
if (nextProps
&&
(
nextProps.pullToRefreshState != this.props.pullToRefreshState
|| nextProps.loadingLayoutScrollPositionRatio != this.props.loadingLayoutScrollPositionRatio
)
) {
this.setState({
pullToRefreshState: nextProps.pullToRefreshState,
loadingLayoutScrollPositionRatio: nextProps.loadingLayoutScrollPositionRatio,
});
}
}
onLayout(event) {
// 获取view的宽度
let viewWidth = event.nativeEvent.layout.width;
// 获取view的高度
let viewHeight = event.nativeEvent.layout.height;
// 若view的宽度或高度为空,或者宽高跟原来完全一样
if (!viewWidth || !viewHeight || (this.state.viewWidth == viewWidth && this.state.viewHeight == viewHeight)) {
return;
}
// 向state中更新最新的view宽度
this.setState({
viewWidth: viewWidth,
viewHeight: viewHeight,
});
}
getStatusText(pullToRefreshState: string): string {
let text = "";
switch (pullToRefreshState) {
case STATE_PULL_TO_REFRESH:
text = "下拉刷新";
break;
case STATE_RELEASE_TO_REFRESH:
text = "松手可刷新"
break;
case STATE_REFRESHING:
text = "玩命刷新中..."
break;
default:
text = "下拉刷新";
break;
}
return text;
}
render() {
let circleSpanRadian = 2 * Math.PI * Math.min(1, Math.max(0, this.state.loadingLayoutScrollPositionRatio));
return (
<RCTPullToRefreshLoadingLayout
{...this.props}
style={[this.props.style, styles.container]}
onLayout={this.onLayout.bind(this)}
>
<View
style={[styles.contentArea]}
>
<CircularProgressBarSvg
size={40}
outerRadius={15}
innerRadius={10}
progress={100 * this.state.loadingLayoutScrollPositionRatio}/>
<Text
style={[styles.statusText]}
numberOfLines={1}
>
{this.getStatusText(this.state.pullToRefreshState)}
</Text>
</View>
</RCTPullToRefreshLoadingLayout>
);
}
}
const styles = {
container: {
justifyContent: 'flex-end',
alignItems: 'center',
},
contentArea: {
flexDirection: 'row',
justifyContent: 'center',
alignItems: 'center',
marginBottom: 5,
},
circleProgress: {
width: 25,
height: 25,
marginRight: 10,
},
scrollRatioText: {
textAlign: 'center',
textAlignVertical: 'center',
},
statusText: {
textAlign: 'center',
textAlignVertical: 'center',
fontSize: 15,
},
};
const NATIVE_MODULE_REGISTERED_NAME = "RCTPullToRefreshLoadingLayout";
let iface = {
name: NATIVE_MODULE_REGISTERED_NAME,
propTypes: {
...View.propTypes,
},
}
const RCTPullToRefreshLoadingLayout = requireNativeComponent(NATIVE_MODULE_REGISTERED_NAME, iface);