@tanstack/angular-table
Version:
Headless UI for building powerful tables & datagrids for Angular.
173 lines • 22.6 kB
JavaScript
import { ChangeDetectorRef, inject, Injectable, KeyValueDiffers, OutputEmitterRef, ViewContainerRef, } from '@angular/core';
import * as i0 from "@angular/core";
export class FlexRenderComponentFactory {
#viewContainerRef = inject(ViewContainerRef);
createComponent(flexRenderComponent, componentInjector) {
const componentRef = this.#viewContainerRef.createComponent(flexRenderComponent.component, {
injector: componentInjector,
});
const view = new FlexRenderComponentRef(componentRef, flexRenderComponent, componentInjector);
const { inputs, outputs } = flexRenderComponent;
if (inputs)
view.setInputs(inputs);
if (outputs)
view.setOutputs(outputs);
return view;
}
static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "17.3.11", ngImport: i0, type: FlexRenderComponentFactory, deps: [], target: i0.ɵɵFactoryTarget.Injectable });
static ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "17.3.11", ngImport: i0, type: FlexRenderComponentFactory });
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "17.3.11", ngImport: i0, type: FlexRenderComponentFactory, decorators: [{
type: Injectable
}] });
export class FlexRenderComponentRef {
componentRef;
componentInjector;
#keyValueDiffersFactory;
#componentData;
#inputValueDiffer;
#outputRegistry;
constructor(componentRef, componentData, componentInjector) {
this.componentRef = componentRef;
this.componentInjector = componentInjector;
this.#componentData = componentData;
this.#keyValueDiffersFactory = componentInjector.get(KeyValueDiffers);
this.#outputRegistry = new FlexRenderComponentOutputManager(this.#keyValueDiffersFactory, this.outputs);
this.#inputValueDiffer = this.#keyValueDiffersFactory
.find(this.inputs)
.create();
this.#inputValueDiffer.diff(this.inputs);
this.componentRef.onDestroy(() => this.#outputRegistry.unsubscribeAll());
}
get component() {
return this.#componentData.component;
}
get inputs() {
return this.#componentData.inputs ?? {};
}
get outputs() {
return this.#componentData.outputs ?? {};
}
/**
* Get component input and output diff by the given item
*/
diff(item) {
return {
inputDiff: this.#inputValueDiffer.diff(item.inputs ?? {}),
outputDiff: this.#outputRegistry.diff(item.outputs ?? {}),
};
}
/**
*
* @param compare Whether the current ref component instance is the same as the given one
*/
eqType(compare) {
return compare.component === this.component;
}
/**
* Tries to update current component refs input by the new given content component.
*/
update(content) {
const eq = this.eqType(content);
if (!eq)
return;
const { inputDiff, outputDiff } = this.diff(content);
if (inputDiff) {
inputDiff.forEachAddedItem(item => this.setInput(item.key, item.currentValue));
inputDiff.forEachChangedItem(item => this.setInput(item.key, item.currentValue));
inputDiff.forEachRemovedItem(item => this.setInput(item.key, undefined));
}
if (outputDiff) {
outputDiff.forEachAddedItem(item => {
this.setOutput(item.key, item.currentValue);
});
outputDiff.forEachChangedItem(item => {
if (item.currentValue) {
this.#outputRegistry.setListener(item.key, item.currentValue);
}
else {
this.#outputRegistry.unsubscribe(item.key);
}
});
outputDiff.forEachRemovedItem(item => {
this.#outputRegistry.unsubscribe(item.key);
});
}
this.#componentData = content;
}
markAsDirty() {
this.componentRef.injector.get(ChangeDetectorRef).markForCheck();
}
setInputs(inputs) {
for (const prop in inputs) {
this.setInput(prop, inputs[prop]);
}
}
setInput(key, value) {
if (this.#componentData.allowedInputNames.includes(key)) {
this.componentRef.setInput(key, value);
}
}
setOutputs(outputs) {
this.#outputRegistry.unsubscribeAll();
for (const prop in outputs) {
this.setOutput(prop, outputs[prop]);
}
}
setOutput(outputName, emit) {
if (!this.#componentData.allowedOutputNames.includes(outputName))
return;
if (!emit) {
this.#outputRegistry.unsubscribe(outputName);
return;
}
const hasListener = this.#outputRegistry.hasListener(outputName);
this.#outputRegistry.setListener(outputName, emit);
if (hasListener) {
return;
}
const instance = this.componentRef.instance;
const output = instance[outputName];
if (output && output instanceof OutputEmitterRef) {
output.subscribe(value => {
this.#outputRegistry.getListener(outputName)?.(value);
});
}
}
}
class FlexRenderComponentOutputManager {
#outputSubscribers = {};
#outputListeners = {};
#valueDiffer;
constructor(keyValueDiffers, initialOutputs) {
this.#valueDiffer = keyValueDiffers.find(initialOutputs).create();
if (initialOutputs) {
this.#valueDiffer.diff(initialOutputs);
}
}
hasListener(outputName) {
return outputName in this.#outputListeners;
}
setListener(outputName, callback) {
this.#outputListeners[outputName] = callback;
}
getListener(outputName) {
return this.#outputListeners[outputName];
}
unsubscribeAll() {
for (const prop in this.#outputSubscribers) {
this.unsubscribe(prop);
}
}
unsubscribe(outputName) {
if (outputName in this.#outputSubscribers) {
this.#outputSubscribers[outputName]?.unsubscribe();
delete this.#outputSubscribers[outputName];
delete this.#outputListeners[outputName];
}
}
diff(outputs) {
return this.#valueDiffer.diff(outputs ?? {});
}
}
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{\n  ChangeDetectorRef,\n  ComponentRef,\n  inject,\n  Injectable,\n  Injector,\n  KeyValueDiffer,\n  KeyValueDiffers,\n  OutputEmitterRef,\n  OutputRefSubscription,\n  ViewContainerRef,\n} from '@angular/core'\nimport { FlexRenderComponent } from './flex-render-component'\n\n@Injectable()\nexport class FlexRenderComponentFactory {\n  #viewContainerRef = inject(ViewContainerRef)\n\n  createComponent<T>(\n    flexRenderComponent: FlexRenderComponent<T>,\n    componentInjector: Injector\n  ): FlexRenderComponentRef<T> {\n    const componentRef = this.#viewContainerRef.createComponent(\n      flexRenderComponent.component,\n      {\n        injector: componentInjector,\n      }\n    )\n    const view = new FlexRenderComponentRef(\n      componentRef,\n      flexRenderComponent,\n      componentInjector\n    )\n\n    const { inputs, outputs } = flexRenderComponent\n\n    if (inputs) view.setInputs(inputs)\n    if (outputs) view.setOutputs(outputs)\n\n    return view\n  }\n}\n\nexport class FlexRenderComponentRef<T> {\n  readonly #keyValueDiffersFactory: KeyValueDiffers\n  #componentData: FlexRenderComponent<T>\n  #inputValueDiffer: KeyValueDiffer<string, unknown>\n\n  readonly #outputRegistry: FlexRenderComponentOutputManager\n\n  constructor(\n    readonly componentRef: ComponentRef<T>,\n    componentData: FlexRenderComponent<T>,\n    readonly componentInjector: Injector\n  ) {\n    this.#componentData = componentData\n    this.#keyValueDiffersFactory = componentInjector.get(KeyValueDiffers)\n\n    this.#outputRegistry = new FlexRenderComponentOutputManager(\n      this.#keyValueDiffersFactory,\n      this.outputs\n    )\n\n    this.#inputValueDiffer = this.#keyValueDiffersFactory\n      .find(this.inputs)\n      .create()\n    this.#inputValueDiffer.diff(this.inputs)\n\n    this.componentRef.onDestroy(() => this.#outputRegistry.unsubscribeAll())\n  }\n\n  get component() {\n    return this.#componentData.component\n  }\n\n  get inputs() {\n    return this.#componentData.inputs ?? {}\n  }\n\n  get outputs() {\n    return this.#componentData.outputs ?? {}\n  }\n\n  /**\n   * Get component input and output diff by the given item\n   */\n  diff(item: FlexRenderComponent<T>) {\n    return {\n      inputDiff: this.#inputValueDiffer.diff(item.inputs ?? {}),\n      outputDiff: this.#outputRegistry.diff(item.outputs ?? {}),\n    }\n  }\n  /**\n   *\n   * @param compare Whether the current ref component instance is the same as the given one\n   */\n  eqType(compare: FlexRenderComponent<T>): boolean {\n    return compare.component === this.component\n  }\n\n  /**\n   * Tries to update current component refs input by the new given content component.\n   */\n  update(content: FlexRenderComponent<T>) {\n    const eq = this.eqType(content)\n    if (!eq) return\n    const { inputDiff, outputDiff } = this.diff(content)\n    if (inputDiff) {\n      inputDiff.forEachAddedItem(item =>\n        this.setInput(item.key, item.currentValue)\n      )\n      inputDiff.forEachChangedItem(item =>\n        this.setInput(item.key, item.currentValue)\n      )\n      inputDiff.forEachRemovedItem(item => this.setInput(item.key, undefined))\n    }\n    if (outputDiff) {\n      outputDiff.forEachAddedItem(item => {\n        this.setOutput(item.key, item.currentValue)\n      })\n      outputDiff.forEachChangedItem(item => {\n        if (item.currentValue) {\n          this.#outputRegistry.setListener(item.key, item.currentValue)\n        } else {\n          this.#outputRegistry.unsubscribe(item.key)\n        }\n      })\n      outputDiff.forEachRemovedItem(item => {\n        this.#outputRegistry.unsubscribe(item.key)\n      })\n    }\n\n    this.#componentData = content\n  }\n\n  markAsDirty(): void {\n    this.componentRef.injector.get(ChangeDetectorRef).markForCheck()\n  }\n\n  setInputs(inputs: Record<string, unknown>) {\n    for (const prop in inputs) {\n      this.setInput(prop, inputs[prop])\n    }\n  }\n\n  setInput(key: string, value: unknown) {\n    if (this.#componentData.allowedInputNames.includes(key)) {\n      this.componentRef.setInput(key, value)\n    }\n  }\n\n  setOutputs(\n    outputs: Record<\n      string,\n      OutputEmitterRef<unknown>['emit'] | null | undefined\n    >\n  ) {\n    this.#outputRegistry.unsubscribeAll()\n    for (const prop in outputs) {\n      this.setOutput(prop, outputs[prop])\n    }\n  }\n\n  setOutput(\n    outputName: string,\n    emit: OutputEmitterRef<unknown>['emit'] | undefined | null\n  ): void {\n    if (!this.#componentData.allowedOutputNames.includes(outputName)) return\n    if (!emit) {\n      this.#outputRegistry.unsubscribe(outputName)\n      return\n    }\n\n    const hasListener = this.#outputRegistry.hasListener(outputName)\n    this.#outputRegistry.setListener(outputName, emit)\n\n    if (hasListener) {\n      return\n    }\n\n    const instance = this.componentRef.instance\n    const output = instance[outputName as keyof typeof instance]\n    if (output && output instanceof OutputEmitterRef) {\n      output.subscribe(value => {\n        this.#outputRegistry.getListener(outputName)?.(value)\n      })\n    }\n  }\n}\n\nclass FlexRenderComponentOutputManager {\n  readonly #outputSubscribers: Record<string, OutputRefSubscription> = {}\n  readonly #outputListeners: Record<string, (...args: any[]) => void> = {}\n\n  readonly #valueDiffer: KeyValueDiffer<\n    string,\n    undefined | null | OutputEmitterRef<unknown>['emit']\n  >\n\n  constructor(keyValueDiffers: KeyValueDiffers, initialOutputs: any) {\n    this.#valueDiffer = keyValueDiffers.find(initialOutputs).create()\n    if (initialOutputs) {\n      this.#valueDiffer.diff(initialOutputs)\n    }\n  }\n\n  hasListener(outputName: string) {\n    return outputName in this.#outputListeners\n  }\n\n  setListener(outputName: string, callback: (...args: any[]) => void) {\n    this.#outputListeners[outputName] = callback\n  }\n\n  getListener(outputName: string) {\n    return this.#outputListeners[outputName]\n  }\n\n  unsubscribeAll(): void {\n    for (const prop in this.#outputSubscribers) {\n      this.unsubscribe(prop)\n    }\n  }\n\n  unsubscribe(outputName: string) {\n    if (outputName in this.#outputSubscribers) {\n      this.#outputSubscribers[outputName]?.unsubscribe()\n      delete this.#outputSubscribers[outputName]\n      delete this.#outputListeners[outputName]\n    }\n  }\n\n  diff(outputs: Record<string, OutputEmitterRef<unknown>['emit'] | undefined>) {\n    return this.#valueDiffer.diff(outputs ?? {})\n  }\n}\n"]}