File size: 3,118 Bytes
84c1942 | 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 | import React from 'react';
import { Input } from '@codesandbox/components';
import { normalizeKey, formatKey } from '../../../utils/keybindings';
const SPECIAL_KEYS = ['Meta', 'Control', 'Alt', 'Shift', 'Enter', 'Backspace'];
const IGNORED_KEYS = ['Backspace', 'Escape', 'CapsLock'];
function sortKeys(keys) {
return keys.sort((a, b) => {
const isASpecial = SPECIAL_KEYS.indexOf(a) > -1;
const isBSpecial = SPECIAL_KEYS.indexOf(b) > -1;
if (isASpecial && isBSpecial) {
return 0;
}
if (isASpecial) {
return -1;
}
if (isBSpecial) {
return 1;
}
return 0;
});
}
export type Props = {
placeholder: string;
value: string[];
setValue: (val: string[]) => void;
disabled?: boolean;
style?: React.CSSProperties;
};
export type State = {
recordedKeys: string[];
recording: boolean;
};
export default class KeybindingInput extends React.Component<Props, State> {
state: State = {
recording: false,
recordedKeys: [],
};
handleChange = e => {
const { value } = e.target;
this.props.setValue(value);
};
keypresses = 0;
handleKeyDown = e => {
e.preventDefault();
e.stopPropagation();
if (e.key === 'Enter') {
this.props.setValue(this.state.recordedKeys);
} else if (e.key === 'Backspace') {
this.props.setValue(undefined);
}
if (e.key === 'Escape' || e.key === 'Enter' || e.key === 'Backspace') {
this.setState({ recordedKeys: [] });
e.target.blur();
return;
}
const upperCaseKey = normalizeKey(e);
if (
this.state.recordedKeys.indexOf(upperCaseKey) === -1 &&
IGNORED_KEYS.indexOf(e.key) === -1
) {
this.keypresses += 1;
this.setState(state => ({
recordedKeys: sortKeys([...state.recordedKeys, upperCaseKey]),
}));
}
};
handleKeyUp = e => {
e.preventDefault();
e.stopPropagation();
this.keypresses -= 1;
};
handleKeyPress = e => {
e.preventDefault();
e.stopPropagation();
};
handleFocus = () => {
this.setState({
recording: true,
recordedKeys: [],
});
document.addEventListener('keydown', this.handleKeyDown);
document.addEventListener('keyup', this.handleKeyUp);
document.addEventListener('keypress', this.handleKeyPress);
};
handleBlur = () => {
this.keypresses = 0;
if (this.state.recording) {
this.setState({
recording: false,
});
document.removeEventListener('keydown', this.handleKeyDown);
document.removeEventListener('keyup', this.handleKeyUp);
document.removeEventListener('keypress', this.handleKeyPress);
}
};
render() {
const { recording, recordedKeys } = this.state;
const { value, placeholder = 'Enter Keystroke' } = this.props;
const keys = recording ? recordedKeys : value || [];
return (
<Input
style={{ width: '6rem', ...this.props.style }}
value={keys.map(formatKey).join(' + ')}
placeholder={placeholder}
onFocus={this.handleFocus}
onBlur={this.handleBlur}
readOnly
/>
);
}
}
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