79 lines
2.6 KiB
JavaScript
79 lines
2.6 KiB
JavaScript
|
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
|
||
|
|
|
||
|
|
function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
|
||
|
|
|
||
|
|
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
|
||
|
|
|
||
|
|
import React from "react";
|
||
|
|
import PropTypes from "prop-types";
|
||
|
|
import invariant from "invariant";
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The public API for prompting the user before navigating away
|
||
|
|
* from a screen with a component.
|
||
|
|
*/
|
||
|
|
|
||
|
|
var Prompt = function (_React$Component) {
|
||
|
|
_inherits(Prompt, _React$Component);
|
||
|
|
|
||
|
|
function Prompt() {
|
||
|
|
_classCallCheck(this, Prompt);
|
||
|
|
|
||
|
|
return _possibleConstructorReturn(this, _React$Component.apply(this, arguments));
|
||
|
|
}
|
||
|
|
|
||
|
|
Prompt.prototype.enable = function enable(message) {
|
||
|
|
if (this.unblock) this.unblock();
|
||
|
|
|
||
|
|
this.unblock = this.context.router.history.block(message);
|
||
|
|
};
|
||
|
|
|
||
|
|
Prompt.prototype.disable = function disable() {
|
||
|
|
if (this.unblock) {
|
||
|
|
this.unblock();
|
||
|
|
this.unblock = null;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
Prompt.prototype.componentWillMount = function componentWillMount() {
|
||
|
|
invariant(this.context.router, "You should not use <Prompt> outside a <Router>");
|
||
|
|
|
||
|
|
if (this.props.when) this.enable(this.props.message);
|
||
|
|
};
|
||
|
|
|
||
|
|
Prompt.prototype.componentWillReceiveProps = function componentWillReceiveProps(nextProps) {
|
||
|
|
if (nextProps.when) {
|
||
|
|
if (!this.props.when || this.props.message !== nextProps.message) this.enable(nextProps.message);
|
||
|
|
} else {
|
||
|
|
this.disable();
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
Prompt.prototype.componentWillUnmount = function componentWillUnmount() {
|
||
|
|
this.disable();
|
||
|
|
};
|
||
|
|
|
||
|
|
Prompt.prototype.render = function render() {
|
||
|
|
return null;
|
||
|
|
};
|
||
|
|
|
||
|
|
return Prompt;
|
||
|
|
}(React.Component);
|
||
|
|
|
||
|
|
Prompt.propTypes = {
|
||
|
|
when: PropTypes.bool,
|
||
|
|
message: PropTypes.oneOfType([PropTypes.func, PropTypes.string]).isRequired
|
||
|
|
};
|
||
|
|
Prompt.defaultProps = {
|
||
|
|
when: true
|
||
|
|
};
|
||
|
|
Prompt.contextTypes = {
|
||
|
|
router: PropTypes.shape({
|
||
|
|
history: PropTypes.shape({
|
||
|
|
block: PropTypes.func.isRequired
|
||
|
|
}).isRequired
|
||
|
|
}).isRequired
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
export default Prompt;
|