@uifabric/utilities/lib/customizations/Customizer.js

import { __extends } from "tslib";
import * as React from 'react';
import { Customizations } from './Customizations';
import { CustomizerContext } from './CustomizerContext';
import { mergeCustomizations } from './mergeCustomizations';
/**
 * The Customizer component allows for default props to be mixed into components which
 * are decorated with the customizable() decorator, or use the styled HOC. This enables
 * injection scenarios like:
 *
 * 1. render svg icons instead of the icon font within all buttons
 * 2. inject a custom theme object into a component
 *
 * Props are provided via the settings prop which should be one of the following:
 * - A json map which contains 1 or more name/value pairs representing injectable props.
 * - A function that receives the current settings and returns the new ones that apply to the scope
 *
 * @public
 */
var Customizer = /** @class */ (function (_super) {
    __extends(Customizer, _super);
    function Customizer() {
        var _this = _super !== null && _super.apply(this, arguments) || this;
        _this._onCustomizationChange = function () { return _this.forceUpdate(); };
        return _this;
    }
    Customizer.prototype.componentDidMount = function () {
        Customizations.observe(this._onCustomizationChange);
    };
    Customizer.prototype.componentWillUnmount = function () {
        Customizations.unobserve(this._onCustomizationChange);
    };
    Customizer.prototype.render = function () {
        var _this = this;
        var contextTransform = this.props.contextTransform;
        return (React.createElement(CustomizerContext.Consumer, null, function (parentContext) {
            var newContext = mergeCustomizations(_this.props, parentContext);
            if (contextTransform) {
                newContext = contextTransform(newContext);
            }
            return React.createElement(CustomizerContext.Provider, { value: newContext }, _this.props.children);
        }));
    };
    return Customizer;
}(React.Component));
export { Customizer };
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