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@dotglitch/ngx-common

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Angular components and utilities that are commonly used.

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import { Component, createComponent } from '@angular/core'; import * as React from 'react'; import { createRoot } from 'react-dom/client'; import { ulid } from 'ulidx'; import * as i0 from "@angular/core"; import * as i1 from "../../services/theme.service"; /** * Extend this component to automatically generate * bindings to a React component. * * ! You _must_ override the property `ngReactComponent` * Failure to do so will result in errors * `override readonly ngReactComponent = ReactFlowWrappableComponent;` */ export class ReactMagicWrapperComponent { /** * Wrap an angular component inside of a React memo object. * Will attempt to bind @Input and @Output properties if provided, * and will bind the react arguments directly as @Input properties. * * @experimental * @param componentClass Angular component * @param envInjector An `EnvironmentInjector` instance to be used for the component * @param injector An `ElementInjector` instance * @param _inputs * @param _outputs * @returns */ static { this.WrapAngularComponent = ({ component, appRef, injector, ngZone, staticInputs, staticOutputs, preSiblings, postSiblings, additionalChildren, rootElementName, containerElementName }) => React.memo((args) => { const id = ulid(); React.useEffect(() => { try { const componentInstance = createComponent(component, { environmentInjector: appRef.injector, elementInjector: injector, hostElement: document.getElementById(id) }); appRef.attachView(componentInstance.hostView); // @ts-ignore // component.hostView = hostView; Object.assign(staticInputs, args); const { inputs, outputs } = component['ɵcmp']; // Returns a list of entries that need to be set // This makes it so that unnecessary setters are not invoked. const updated = Object.entries(inputs).filter(([parentKey, childKey]) => { return componentInstance.instance[childKey] != staticInputs[parentKey]; }); updated.forEach(([parentKey, childKey]) => { if (staticInputs.hasOwnProperty(parentKey)) componentInstance.instance[childKey] = staticInputs[parentKey]; }); const outputSubscriptions = {}; // Get a list of unregistered outputs const newOutputs = Object.entries(outputs).filter(([parentKey, childKey]) => { return !outputSubscriptions[parentKey]; }); // Reverse bind via subscription newOutputs.forEach(([parentKey, childKey]) => { if (!staticOutputs.hasOwnProperty(parentKey)) return; const target = componentInstance.instance[childKey]; const outputs = staticOutputs; const sub = target.subscribe((...args) => { // Run the callback in the provided zone ngZone.run(() => { outputs[parentKey](...args); }); }); // Subscription outputSubscriptions[parentKey] = sub; }); // Wrap the destroy method to safely release the subscriptions const originalDestroy = componentInstance.onDestroy?.bind(componentInstance); componentInstance.onDestroy = (cb) => { Object.values(outputSubscriptions).forEach(s => s.unsubscribe()); originalDestroy?.(cb); }; componentInstance.changeDetectorRef.detectChanges(); } catch (err) { console.error(err); } }, []); const elements = [ ...(preSiblings || []), React.createElement(containerElementName || "div", { id }), ...(postSiblings || []), ...(additionalChildren || []) ].filter(e => e); return React.createElement(rootElementName || "div", {}, ...elements); }); } constructor(ngContainer, ngTheme, ngZone) { this.ngContainer = ngContainer; this.ngTheme = ngTheme; this.ngZone = ngZone; this.ngSubscriptions = [ this.ngTheme.subscribe(t => { this.theme = t; this.ngOnChanges(); }) ]; } ngOnInit() { if (!this.ngReactComponent) { throw new Error("ReactMagicWrapperComponent cannot start without a provided ngReactComponent!"); } } ngOnChanges(changes) { this._render(); } ngAfterViewInit() { this._render(); } ngOnDestroy() { this._root?.unmount(); this.ngSubscriptions.forEach(s => s.unsubscribe()); } _render() { if (!this.ngReactComponent) { console.log("Render no component. May be context issue"); return; } ; this.ngZone.runOutsideAngular(() => { try { this._root ??= createRoot(this.ngContainer.element.nativeElement); // List all keys that do not start with `_` nor `ng` const keys = Object.keys(this).filter(k => !/^(?:_|ng)/.test(k)); // Get all property keys from the class const propKeys = keys.filter(k => !k.startsWith("on")); // Get all event handler keys from the class const evtKeys = keys.filter(k => k.startsWith("on")); const props = {}; // Project all key properties onto `props` propKeys.forEach(k => props[k] = this[k]); // Attempt to ensure no zone is lost during the event emitter fires this.ngZone.runGuarded(() => { // Bind all event handlers. // ! important Angular uses EventEmitter, React uses // a different method of event binding evtKeys.forEach(k => props[k] = (...args) => this[k].next(args)); }); this._root.render(React.createElement(this.ngReactComponent, { props: props })); } catch (err) { console.error(err); } }); } static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "17.1.2", ngImport: i0, type: ReactMagicWrapperComponent, deps: [{ token: i0.ViewContainerRef }, { token: i1.ThemeService }, { token: i0.NgZone }], target: i0.ɵɵFactoryTarget.Component }); } static { this.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "14.0.0", version: "17.1.2", type: ReactMagicWrapperComponent, isStandalone: true, selector: "app-react-magic-wrapper", usesOnChanges: true, ngImport: i0, template: ``, isInline: true }); } } i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "17.1.2", ngImport: i0, type: ReactMagicWrapperComponent, decorators: [{ type: Component, args: [{ selector: 'app-react-magic-wrapper', template: ``, standalone: true }] }], ctorParameters: () => [{ type: i0.ViewContainerRef }, { type: i1.ThemeService }, { type: i0.NgZone }] }); //# 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{ AfterViewInit, ApplicationRef, Component, ComponentFactoryResolver, EnvironmentInjector, EventEmitter, Injector, NgZone, OnChanges, OnDestroy, SimpleChanges, Type, ViewContainerRef, ViewRef, createComponent } from '@angular/core';\nimport * as React from 'react';\nimport { createRoot, Root } from 'react-dom/client';\n\nimport { ThemeService } from '../../services/theme.service';\nimport { ulid } from 'ulidx';\nimport { Subscription } from 'rxjs';\n\n/**\n * Extend this component to automatically generate\n * bindings to a React component.\n *\n * ! You _must_ override the property `ngReactComponent`\n * Failure to do so will result in errors\n * `override readonly ngReactComponent = ReactFlowWrappableComponent;`\n */\n@Component({\n    selector: 'app-react-magic-wrapper',\n    template: ``,\n    standalone: true\n})\nexport class ReactMagicWrapperComponent implements OnChanges, OnDestroy, AfterViewInit {\n\n    /**\n     * Wrap an angular component inside of a React memo object.\n     * Will attempt to bind @Input and @Output properties if provided,\n     * and will bind the react arguments directly as @Input properties.\n     *\n     * @experimental\n     * @param componentClass Angular component\n     * @param envInjector    An `EnvironmentInjector` instance to be used for the component\n     * @param injector       An `ElementInjector` instance\n     * @param _inputs\n     * @param _outputs\n     * @returns\n     */\n    static WrapAngularComponent = ({\n        component,\n        appRef,\n        injector,\n        ngZone,\n        staticInputs,\n        staticOutputs,\n        preSiblings,\n        postSiblings,\n        additionalChildren,\n        rootElementName,\n        containerElementName\n    }: {\n        component: Type<any>,\n        appRef: Omit<ApplicationRef, '_runningTick'>,\n        injector: Injector,\n        ngZone: NgZone,\n        staticInputs?: { [key: string]: any },\n        staticOutputs?: { [key: string]: Function },\n        preSiblings?: React.ReactNode[],\n        postSiblings?: React.ReactNode[],\n        additionalChildren?: React.ReactNode[],\n        rootElementName?: Parameters<typeof React.createElement>[0],\n        containerElementName?: string\n    }) => React.memo((args) => {\n\n        const id = ulid();\n        React.useEffect(() => {\n            try {\n\n                const componentInstance = createComponent(component, {\n                    environmentInjector: appRef.injector,\n                    elementInjector: injector,\n                    hostElement: document.getElementById(id)\n                });\n\n                appRef.attachView(componentInstance.hostView);\n                // @ts-ignore\n                // component.hostView = hostView;\n\n                Object.assign(staticInputs, args);\n\n                const { inputs, outputs } = component['ɵcmp'];\n\n                // Returns a list of entries that need to be set\n                // This makes it so that unnecessary setters are not invoked.\n                const updated = Object.entries(inputs).filter(([parentKey, childKey]: [string, string]) => {\n                    return componentInstance.instance[childKey] != staticInputs[parentKey];\n                });\n\n                updated.forEach(([parentKey, childKey]: [string, string]) => {\n                    if (staticInputs.hasOwnProperty(parentKey))\n                        componentInstance.instance[childKey] = staticInputs[parentKey];\n                });\n\n                const outputSubscriptions: { [key: string]: Subscription } = {};\n                // Get a list of unregistered outputs\n                const newOutputs = Object.entries(outputs).filter(([parentKey, childKey]: [string, string]) => {\n                    return !outputSubscriptions[parentKey];\n                });\n\n                // Reverse bind via subscription\n                newOutputs.forEach(([parentKey, childKey]: [string, string]) => {\n                    if (!staticOutputs.hasOwnProperty(parentKey)) return;\n\n                    const target: EventEmitter<unknown> = componentInstance.instance[childKey];\n                    const outputs = staticOutputs;\n\n                    const sub = target.subscribe((...args) => {\n                        // Run the callback in the provided zone\n                        ngZone.run(() => {\n                            outputs[parentKey](...args);\n                        })\n                    }); // Subscription\n\n                    outputSubscriptions[parentKey] = sub;\n                });\n\n                // Wrap the destroy method to safely release the subscriptions\n                const originalDestroy = componentInstance.onDestroy?.bind(componentInstance);\n                componentInstance.onDestroy = (cb) => {\n                    Object.values(outputSubscriptions).forEach(s => s.unsubscribe());\n                    originalDestroy?.(cb);\n                }\n\n                componentInstance.changeDetectorRef.detectChanges();\n            }\n            catch(err) {\n                console.error(err)\n            }\n        }, []);\n\n        const elements = [\n            ...(preSiblings || []),\n            React.createElement(containerElementName || \"div\", { id }),\n            ...(postSiblings || []),\n            ...(additionalChildren || [])\n        ].filter(e => e);\n\n        return React.createElement(rootElementName || \"div\", { }, ...elements);\n    });\n\n    /**\n     * The react component to be wrapped.\n     * ! Must be overridden for this wrapper to work\n     */\n    ngReactComponent: React.FunctionComponent<any> | React.ComponentClass<any> | string;\n\n    private _root: Root;\n    public theme: string;\n    private ngSubscriptions = [\n        this.ngTheme.subscribe(t => {\n            this.theme = t;\n            this.ngOnChanges();\n        })\n    ];\n\n    constructor(\n        private readonly ngContainer: ViewContainerRef,\n        private readonly ngTheme: ThemeService,\n        private readonly ngZone: NgZone\n    ) {\n    }\n\n    ngOnInit() {\n        if (!this.ngReactComponent) {\n            throw new Error(\"ReactMagicWrapperComponent cannot start without a provided ngReactComponent!\");\n        }\n    }\n\n    ngOnChanges(changes?: SimpleChanges): void {\n        this._render();\n    }\n\n    ngAfterViewInit() {\n        this._render();\n    }\n\n    ngOnDestroy() {\n        this._root?.unmount();\n        this.ngSubscriptions.forEach(s => s.unsubscribe());\n    }\n\n    private _render() {\n        if (!this.ngReactComponent) {\n            console.log(\"Render no component. May be context issue\")\n            return\n        };\n\n        this.ngZone.runOutsideAngular(() => {\n            try {\n                this._root ??= createRoot(this.ngContainer.element.nativeElement);\n\n                // List all keys that do not start with `_` nor `ng`\n                const keys = Object.keys(this).filter(k => !/^(?:_|ng)/.test(k));\n\n                // Get all property keys from the class\n                const propKeys = keys.filter(k => !k.startsWith(\"on\"));\n                // Get all event handler keys from the class\n                const evtKeys = keys.filter(k => k.startsWith(\"on\"));\n\n                const props = {};\n                // Project all key properties onto `props`\n                propKeys.forEach(k => props[k] = this[k]);\n\n                // Attempt to ensure no zone is lost during the event emitter fires\n                this.ngZone.runGuarded(() => {\n                    // Bind all event handlers.\n                    // ! important Angular uses EventEmitter, React uses\n                    // a different method of event binding\n                    evtKeys.forEach(k => props[k] = (...args) => this[k].next(args));\n                })\n\n                this._root.render(React.createElement(this.ngReactComponent, { props: props as any }));\n            }\n            catch(err) {\n                console.error(err)\n            }\n        })\n    }\n}\n"]}