@tarktech/ngx-context
Version:
Angular Context: Easy property binding for router outlet and nested component trees.
109 lines • 14 kB
JavaScript
import { ChangeDetectionStrategy, ChangeDetectorRef, Component, Input, Optional, SkipSelf, ViewEncapsulation } from '@angular/core';
import { ReplaySubject, Subject } from 'rxjs';
import { isSubscribableOrPromise, parseKeys } from './internals';
import * as i0 from "@angular/core";
export class ContextProviderComponent {
source;
initialized = false;
_contextMap = {};
_provide = '';
provided = new Map();
set contextMap(map) {
this._contextMap = map || {};
}
get contextMap() {
return this._contextMap;
}
set provide(value) {
this._provide = value || '';
}
get provide() {
return this._provide;
}
get component() {
return this.source['_view']?.component || this.source['context'];
}
change$ = new ReplaySubject(1);
reset$ = new Subject();
constructor(source) {
this.source = source;
}
init() {
setTimeout(() => {
const THIS = this;
const context = new Map();
const provided = parseKeys(this.provide).filter(key => key && key in this.component);
provided.forEach(key => {
if (isSubscribableOrPromise(this.component[key])) {
this.change$.next(key);
return;
}
const propertyDescriptor = Object.getOwnPropertyDescriptor(this.component, key) ||
Object.getOwnPropertyDescriptor(this.component.__proto__, key);
this.provided.set(key, propertyDescriptor);
const { value, writable, get: getter, set: setter, ...prop } = propertyDescriptor;
Object.defineProperty(this.component, key, {
...prop,
get: getter
? function () {
return getter.call(this);
}
: function () {
return context.get(key);
},
set: setter
? function () {
setter.apply(this, arguments);
THIS.change$.next(key);
}
: function (newValue) {
context.set(key, newValue);
THIS.change$.next(key);
},
});
this.component[key] = value || this.component[key];
});
}, 0);
}
reset() {
this.provided.forEach((propertyDescriptor, key) => {
const value = this.component[key];
Object.defineProperty(this.component, key, propertyDescriptor);
this.component[key] = value;
});
this.provided.clear();
this.change$.next('');
this.reset$.next();
}
ngOnChanges() {
if (this.initialized) {
this.reset();
if (this.source)
this.init();
}
}
ngOnInit() {
this.initialized = true;
this.ngOnChanges();
}
static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.2.7", ngImport: i0, type: ContextProviderComponent, deps: [{ token: i0.ChangeDetectorRef, optional: true, skipSelf: true }], target: i0.ɵɵFactoryTarget.Component });
static ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "14.0.0", version: "16.2.7", type: ContextProviderComponent, selector: "context-provider", inputs: { contextMap: "contextMap", provide: "provide" }, usesOnChanges: true, ngImport: i0, template: '<ng-content></ng-content>', isInline: true, changeDetection: i0.ChangeDetectionStrategy.OnPush, encapsulation: i0.ViewEncapsulation.None });
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.2.7", ngImport: i0, type: ContextProviderComponent, decorators: [{
type: Component,
args: [{
selector: 'context-provider',
template: '<ng-content></ng-content>',
changeDetection: ChangeDetectionStrategy.OnPush,
encapsulation: ViewEncapsulation.None,
}]
}], ctorParameters: function () { return [{ type: i0.ChangeDetectorRef, decorators: [{
type: Optional
}, {
type: SkipSelf
}] }]; }, propDecorators: { contextMap: [{
type: Input
}], provide: [{
type: Input
}] } });
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{\r\n  ChangeDetectionStrategy,\r\n  ChangeDetectorRef,\r\n  Component,\r\n  Input,\r\n  OnChanges,\r\n  OnInit,\r\n  Optional,\r\n  SkipSelf,\r\n  ViewEncapsulation\r\n} from '@angular/core';\r\nimport { ReplaySubject, Subject } from 'rxjs';\r\nimport { isSubscribableOrPromise, parseKeys } from './internals';\r\nimport { ContextMap } from './symbols';\r\n\r\n@Component({\r\n  selector: 'context-provider',\r\n  template: '<ng-content></ng-content>',\r\n  changeDetection: ChangeDetectionStrategy.OnPush,\r\n  encapsulation: ViewEncapsulation.None,\r\n})\r\nexport class ContextProviderComponent<T = any> implements OnChanges, OnInit {\r\n  private initialized = false;\r\n  private _contextMap: ContextMap = {};\r\n  private _provide: string | string[] = '';\r\n\r\n  provided = new Map();\r\n\r\n  @Input()\r\n  set contextMap(map: ContextMap) {\r\n    this._contextMap = map || {};\r\n  }\r\n  get contextMap(): ContextMap {\r\n    return this._contextMap;\r\n  }\r\n\r\n  @Input()\r\n  set provide(value: string | string[]) {\r\n    this._provide = value || '';\r\n  }\r\n  get provide(): string | string[] {\r\n    return this._provide;\r\n  }\r\n\r\n  get component(): T {\r\n    return this.source['_view']?.component || this.source['context']\r\n  }\r\n\r\n  change$ = new ReplaySubject<string>(1);\r\n  reset$ = new Subject<void>();\r\n\r\n  constructor(\r\n    @Optional()\r\n    @SkipSelf()\r\n    private source: ChangeDetectorRef,\r\n  ) {\r\n  }\r\n\r\n  private init() {\r\n    setTimeout(() => {\r\n      const THIS = this;\r\n      const context = new Map();\r\n      const provided = parseKeys(this.provide).filter(\r\n        key => key && key in (this.component as object),\r\n      );\r\n\r\n      provided.forEach(key => {\r\n        if (isSubscribableOrPromise(this.component[key])) {\r\n          this.change$.next(key);\r\n          return;\r\n        }\r\n\r\n        const propertyDescriptor =\r\n          Object.getOwnPropertyDescriptor(this.component, key) ||\r\n          Object.getOwnPropertyDescriptor((this.component as any).__proto__, key);\r\n\r\n        this.provided.set(key, propertyDescriptor);\r\n\r\n        const { value, writable, get: getter, set: setter, ...prop } = propertyDescriptor;\r\n\r\n        Object.defineProperty(this.component, key, {\r\n          ...prop,\r\n          get: getter\r\n            ? function (): any {\r\n              return getter.call(this);\r\n            }\r\n            : function (): any {\r\n              return context.get(key);\r\n            },\r\n          set: setter\r\n            ? function () {\r\n              setter.apply(this, arguments);\r\n              THIS.change$.next(key);\r\n            }\r\n            : function (newValue: any) {\r\n              context.set(key, newValue);\r\n              THIS.change$.next(key);\r\n            },\r\n        });\r\n\r\n        this.component[key] = value || this.component[key];\r\n      });\r\n    }, 0);\r\n  }\r\n\r\n  private reset() {\r\n    this.provided.forEach((propertyDescriptor, key) => {\r\n      const value = this.component[key];\r\n\r\n      Object.defineProperty(this.component, key, propertyDescriptor);\r\n\r\n      this.component[key] = value;\r\n    });\r\n\r\n    this.provided.clear();\r\n    this.change$.next('');\r\n    this.reset$.next();\r\n  }\r\n\r\n  ngOnChanges() {\r\n    if (this.initialized) {\r\n      this.reset();\r\n\r\n      if (this.source) this.init();\r\n    }\r\n  }\r\n\r\n  ngOnInit() {\r\n    this.initialized = true;\r\n    this.ngOnChanges();\r\n  }\r\n}\r\n"]}