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
|
import { BigNumber } from '@0x/utils';
import * as _ from 'lodash';
import * as React from 'react';
import { ColorOption, transparentWhite } from '../style/theme';
import { ERC20Asset, SimpleHandler } from '../types';
import { assetUtils } from '../util/asset';
import { util } from '../util/util';
import { ScalingAmountInput } from './scaling_amount_input';
import { Container } from './ui/container';
import { Flex } from './ui/flex';
import { Icon } from './ui/icon';
import { Text } from './ui/text';
// Asset amounts only apply to ERC20 assets
export interface ERC20AssetAmountInputProps {
asset?: ERC20Asset;
value?: BigNumber;
onChange: (value?: BigNumber, asset?: ERC20Asset) => void;
onSelectAssetClick?: (asset?: ERC20Asset) => void;
startingFontSizePx: number;
fontColor?: ColorOption;
isInputDisabled: boolean;
canSelectOtherAsset: boolean;
numberOfAssetsAvailable?: number;
}
export interface ERC20AssetAmountInputState {
currentFontSizePx: number;
}
export class ERC20AssetAmountInput extends React.Component<ERC20AssetAmountInputProps, ERC20AssetAmountInputState> {
public static defaultProps = {
onChange: util.boundNoop,
isDisabled: false,
};
constructor(props: ERC20AssetAmountInputProps) {
super(props);
this.state = {
currentFontSizePx: props.startingFontSizePx,
};
}
public render(): React.ReactNode {
const { asset } = this.props;
return (
<Container whiteSpace="nowrap">
{_.isUndefined(asset) ? this._renderTokenSelectionContent() : this._renderContentForAsset(asset)}
</Container>
);
}
private readonly _renderContentForAsset = (asset: ERC20Asset): React.ReactNode => {
const { onChange, isInputDisabled, ...rest } = this.props;
const amountBorderBottom = isInputDisabled ? '' : `1px solid ${transparentWhite}`;
const onSymbolClick = this._generateSelectAssetClickHandler();
return (
<React.Fragment>
<Container borderBottom={amountBorderBottom} display="inline-block">
<ScalingAmountInput
{...rest}
isDisabled={isInputDisabled}
textLengthThreshold={this._textLengthThresholdForAsset(asset)}
maxFontSizePx={this.props.startingFontSizePx}
onAmountChange={this._handleChange}
onFontSizeChange={this._handleFontSizeChange}
hasAutofocus={true}
key={asset.assetData}
/>
</Container>
<Container
display="inline-block"
marginLeft="8px"
title={assetUtils.bestNameForAsset(asset, undefined)}
>
<Flex inline={true}>
<Text
fontSize={`${this.state.currentFontSizePx}px`}
fontColor={ColorOption.white}
textTransform="uppercase"
onClick={this.props.canSelectOtherAsset ? onSymbolClick : undefined}
>
{assetUtils.formattedSymbolForAsset(asset)}
</Text>
{this.props.canSelectOtherAsset && this._renderChevronIcon()}
</Flex>
</Container>
</React.Fragment>
);
};
private readonly _renderTokenSelectionContent = (): React.ReactNode => {
const { numberOfAssetsAvailable } = this.props;
let text = 'Select Token';
if (_.isUndefined(numberOfAssetsAvailable)) {
text = 'Loading...';
} else if (numberOfAssetsAvailable === 0) {
text = 'Assets Unavailable';
}
return (
<Flex>
<Text
fontSize="30px"
fontColor={ColorOption.white}
opacity={0.7}
fontWeight="500"
onClick={this._generateSelectAssetClickHandler()}
>
{text}
</Text>
{this._renderChevronIcon()}
</Flex>
);
};
private readonly _renderChevronIcon = (): React.ReactNode => {
if (!this._areMultipleAssetsAvailable()) {
return null;
}
return (
<Container marginLeft="5px">
<Icon icon="chevron" width={12} stroke={ColorOption.white} onClick={this._handleSelectAssetClick} />
</Container>
);
};
private readonly _handleChange = (value?: BigNumber): void => {
this.props.onChange(value, this.props.asset);
};
private readonly _handleFontSizeChange = (fontSizePx: number): void => {
this.setState({
currentFontSizePx: fontSizePx,
});
};
private readonly _generateSelectAssetClickHandler = (): SimpleHandler | undefined => {
// We don't want to allow opening the token selection panel if there are no assets.
// Since styles are inferred from the presence of a click handler, we want to return undefined
// instead of providing a noop.
if (!this._areMultipleAssetsAvailable() || _.isUndefined(this.props.onSelectAssetClick)) {
return undefined;
}
return this._handleSelectAssetClick;
};
private readonly _areMultipleAssetsAvailable = (): boolean => {
const { numberOfAssetsAvailable } = this.props;
return !_.isUndefined(numberOfAssetsAvailable) && numberOfAssetsAvailable > 1;
};
private readonly _handleSelectAssetClick = (): void => {
if (this.props.onSelectAssetClick) {
this.props.onSelectAssetClick();
}
};
// For assets with symbols of different length,
// start scaling the input at different character lengths
private readonly _textLengthThresholdForAsset = (asset?: ERC20Asset): number => {
if (_.isUndefined(asset)) {
return 3;
}
const symbol = asset.metaData.symbol;
if (symbol.length <= 3) {
return 5;
}
if (symbol.length === 5) {
return 3;
}
return 4;
};
}
|