| 1 | {"version":3,"file":"a4-overlay.js","sources":["ng://a4-overlay/lib/overlay.component.ts","ng://a4-overlay/lib/overlay.service.ts","ng://a4-overlay/lib/overlay.module.ts"],"sourcesContent":["import { Component, OnInit, ChangeDetectionStrategy } from '@angular/core';\r\n\r\n@Component({\r\n // tslint:disable-next-line:component-selector\r\n selector: 'a4-overlay',\r\n template: ``,\r\n styles: [`\r\n :host {\r\n position: fixed;\r\n left: 0;\r\n right: 0;\r\n top: 0;\r\n bottom: 0;\r\n background-color: rgba(0,0,0,0.1);\r\n z-index: 999;\r\n }\r\n `],\r\n changeDetection: ChangeDetectionStrategy.OnPush\r\n})\r\nexport class OverlayComponent {\r\n\r\n}","import { Injectable, ComponentFactoryResolver, ApplicationRef, ViewContainerRef, ComponentRef, Type } from '@angular/core';\r\nimport { BehaviorSubject } from 'rxjs';\r\nimport { filter } from 'rxjs/operators';\r\n\r\nimport { OverlayComponent } from './overlay.component';\r\n\r\nenum BusCommand { SHOW, HIDE }\r\n\r\ninterface BusData {\r\n command: BusCommand;\r\n dynamicComponent?: Type<any>;\r\n}\r\n\r\n@Injectable({\r\n providedIn: 'root'\r\n})\r\nexport class OverlayService {\r\n\r\n private count = 0;\r\n private componentRef: ComponentRef<OverlayComponent>;\r\n private dynamicComponentRef: ComponentRef<any>;\r\n private bus$ = new BehaviorSubject<BusData>(null);\r\n\r\n constructor(private resolver: ComponentFactoryResolver, private applicationRef: ApplicationRef) {\r\n this.bus$.\r\n pipe(filter(p => !!p))\r\n .subscribe(p => {\r\n setTimeout(() => {\r\n if (p.command === BusCommand.SHOW) {\r\n this.doShow(p.dynamicComponent);\r\n } else {\r\n this.doHide();\r\n }\r\n }, 0);\r\n });\r\n }\r\n\r\n private get viewContainerRef(): ViewContainerRef {\r\n if (this.applicationRef.components.length === 0) {\r\n return null;\r\n }\r\n const appInstance = this.applicationRef.components[0].instance;\r\n\r\n if (!appInstance.viewContainerRef) {\r\n const appName = this.applicationRef.componentTypes[0].name;\r\n throw new Error(`Missing 'viewContainerRef' declaration in ${appName} constructor`);\r\n }\r\n\r\n return appInstance.viewContainerRef;\r\n }\r\n\r\n private doShow(dynamicComponent: Type<any>) {\r\n if (this.viewContainerRef) {\r\n if (this.count === 0) {\r\n const factory = this.resolver.resolveComponentFactory(OverlayComponent);\r\n this.componentRef = this.viewContainerRef.createComponent(factory);\r\n if (dynamicComponent) {\r\n const dynamicFactory = this.resolver.resolveComponentFactory(dynamicComponent);\r\n this.dynamicComponentRef = this.viewContainerRef.createComponent(dynamicFactory);\r\n }\r\n }\r\n this.count++;\r\n }\r\n }\r\n\r\n doHide() {\r\n if (this.count > 0) {\r\n this.count--;\r\n if (this.count === 0) {\r\n this.componentRef.destroy();\r\n if (this.dynamicComponentRef) {\r\n this.dynamicComponentRef.destroy();\r\n this.dynamicComponentRef = null;\r\n }\r\n }\r\n }\r\n\r\n }\r\n\r\n show(dynamicComponent: Type<any> = null) {\r\n this.bus$.next({ command: BusCommand.SHOW, dynamicComponent });\r\n }\r\n\r\n hide() {\r\n this.bus$.next({ command: BusCommand.HIDE });\r\n }\r\n\r\n public get attachedComponent(): ComponentRef<any> {\r\n return this.dynamicComponentRef;\r\n }\r\n\r\n}","import { NgModule } from '@angular/core';\r\nimport { CommonModule } from '@angular/common';\r\nimport { OverlayComponent } from './overlay.component';\r\nimport { OverlayService } from './overlay.service';\r\n\r\n@NgModule({\r\n imports: [\r\n CommonModule\r\n ],\r\n declarations: [\r\n OverlayComponent\r\n ],\r\n providers: [\r\n OverlayService\r\n ],\r\n entryComponents: [\r\n OverlayComponent\r\n ]\r\n})\r\nexport class OverlayModule { 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