Files
30-seconds-of-code/node_modules/ink/build/components/App.js
2019-08-20 15:52:05 +02:00

142 lines
4.7 KiB
JavaScript

"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
var _readline = _interopRequireDefault(require("readline"));
var _react = _interopRequireWildcard(require("react"));
var _propTypes = _interopRequireDefault(require("prop-types"));
var _cliCursor = _interopRequireDefault(require("cli-cursor"));
var _AppContext = _interopRequireDefault(require("./AppContext"));
var _StdinContext = _interopRequireDefault(require("./StdinContext"));
var _StdoutContext = _interopRequireDefault(require("./StdoutContext"));
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = Object.defineProperty && Object.getOwnPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : {}; if (desc.get || desc.set) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } } newObj.default = obj; return newObj; } }
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
// Root component for all Ink apps
// It renders stdin and stdout contexts, so that children can access them if needed
// It also handles Ctrl+C exiting and cursor visibility
class App extends _react.PureComponent {
// Determines if TTY is supported on the provided stdin
isRawModeSupported() {
return this.props.stdin.isTTY;
}
constructor() {
super(); // Count how many components enabled raw mode to avoid disabling
// raw mode until all components don't need it anymore
_defineProperty(this, "handleSetRawMode", isEnabled => {
const {
stdin
} = this.props;
if (!this.isRawModeSupported()) {
if (stdin === process.stdin) {
throw new Error('Raw mode is not supported on the current process.stdin, which Ink uses as input stream by default.\nRead about how to prevent this error on https://github.com/vadimdemedes/ink/#israwmodesupported');
} else {
throw new Error('Raw mode is not supported on the stdin provided to Ink.\nRead about how to prevent this error on https://github.com/vadimdemedes/ink/#israwmodesupported');
}
}
stdin.setEncoding('utf8');
if (isEnabled) {
// Ensure raw mode is enabled only once
if (this.rawModeEnabledCount === 0) {
stdin.addListener('data', this.handleInput);
stdin.resume();
stdin.setRawMode(true);
_readline.default.emitKeypressEvents(stdin);
}
this.rawModeEnabledCount++;
return;
} // Disable raw mode only when no components left that are using it
if (--this.rawModeEnabledCount === 0) {
stdin.setRawMode(false);
stdin.removeListener('data', this.handleInput);
stdin.pause();
}
});
_defineProperty(this, "handleInput", input => {
// Exit on Ctrl+C
if (input === '\x03' && this.props.exitOnCtrlC) {
// eslint-disable-line unicorn/no-hex-escape
this.handleExit();
}
});
_defineProperty(this, "handleExit", error => {
if (this.isRawModeSupported()) {
this.handleSetRawMode(false);
}
this.props.onExit(error);
});
this.rawModeEnabledCount = 0;
}
render() {
return _react.default.createElement(_AppContext.default.Provider, {
value: {
exit: this.handleExit
}
}, _react.default.createElement(_StdinContext.default.Provider, {
value: {
stdin: this.props.stdin,
setRawMode: this.handleSetRawMode,
isRawModeSupported: this.isRawModeSupported()
}
}, _react.default.createElement(_StdoutContext.default.Provider, {
value: {
stdout: this.props.stdout
}
}, this.props.children)));
}
componentDidMount() {
_cliCursor.default.hide(this.props.stdout);
}
componentWillUnmount() {
_cliCursor.default.show(this.props.stdout); // ignore calling setRawMode on an handle stdin it cannot be called
if (this.isRawModeSupported()) {
this.handleSetRawMode(false);
}
}
componentDidCatch(error) {
this.handleExit(error);
}
}
exports.default = App;
_defineProperty(App, "propTypes", {
children: _propTypes.default.node.isRequired,
stdin: _propTypes.default.object.isRequired,
stdout: _propTypes.default.object.isRequired,
exitOnCtrlC: _propTypes.default.bool.isRequired,
onExit: _propTypes.default.func.isRequired
});