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import {
Injector,
TemplateRef,
ViewRef,
ViewContainerRef,
Renderer,
ComponentRef,
ComponentFactory,
ComponentFactoryResolver
} from '@angular/core';
export class ContentRef {
constructor(public nodes: any[], public viewRef?: ViewRef, public componentRef?: ComponentRef<any>) {
}
}
export class PopupService<T> {
private _windowFactory: ComponentFactory<T>;
private _windowRef: ComponentRef<T>;
private _contentRef: ContentRef;
constructor(type: any, private _injector: Injector, private _viewContainerRef: ViewContainerRef, private _renderer: Renderer,
componentFactoryResolver: ComponentFactoryResolver) {
this._windowFactory = componentFactoryResolver.resolveComponentFactory<T>(type);
}
public open(content?: string | TemplateRef<any>, context?: any): ComponentRef<T> {
if (!this._windowRef) {
this._contentRef = this._getContentRef(content, context);
this._windowRef =
this._viewContainerRef.createComponent(this._windowFactory, 0, this._injector, this._contentRef.nodes);
}
return this._windowRef;
}
public close() {
if (this._windowRef) {
this._viewContainerRef.remove(this._viewContainerRef.indexOf(this._windowRef.hostView));
this._windowRef = null;
if (this._contentRef.viewRef) {
this._viewContainerRef.remove(this._viewContainerRef.indexOf(this._contentRef.viewRef));
this._contentRef = null;
}
}
}
private _getContentRef(content: string | TemplateRef<any>, context?: any): ContentRef {
if (!content) {
return new ContentRef([]);
} else if (content instanceof TemplateRef) {
const viewRef = this._viewContainerRef.createEmbeddedView(<TemplateRef<T>>content, context);
return new ContentRef([viewRef.rootNodes], viewRef);
} else {
return new ContentRef([[this._renderer.createText(null, `${content}`)]]);
}
}
}
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