@hxui/angular
Version:
* * *
153 lines • 13.6 kB
JavaScript
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,extraRequire,missingReturn,uselessCode} checked by tsc
*/
import { ReflectiveInjector, Injectable, ComponentFactoryResolver, Optional, Inject } from '@angular/core';
import { ModalBackdropComponent } from './modal-backdrop.component';
import { FocusTrapFactory } from '@angular/cdk/a11y';
import { DOCUMENT } from '@angular/common';
export class ModalService {
/**
* @param {?} componentFactoryResolver
* @param {?} focusTrapFactory
* @param {?} document
*/
constructor(componentFactoryResolver, focusTrapFactory, document) {
this.componentFactoryResolver = componentFactoryResolver;
this.focusTrapFactory = focusTrapFactory;
this.document = document;
// Element that was focused before the dialog was opened. Save this to restore upon close.
this.elementFocusedBeforeDialogWasOpened = null;
}
/**
* @param {?} vcRef
* @return {?}
*/
registerViewContainerRef(vcRef) {
this.vcRef = vcRef;
}
/**
* @param {?} injector
* @return {?}
*/
registerInjector(injector) {
this.injector = injector;
}
/**
* Create component dynamically
* @template T
* @param {?} component
* @param {?=} parameters
* @return {?}
*/
create(component, parameters) {
// create backdrop
this.backdropRef = this.dynamicComponentLoader(ModalBackdropComponent);
// create dynamic component
this.componentRef = this.dynamicComponentLoader(component, parameters);
this.componentNativeElement = this.componentRef.location.nativeElement;
this.trapFocus();
return this.componentRef;
}
/**
* @return {?}
*/
close() {
if (!!this.componentRef) {
this.componentRef.destroy();
}
}
/**
* Load dynamic component and return componentRef
* @template T
* @param {?} component
* @param {?=} parameters
* @return {?}
*/
dynamicComponentLoader(component, parameters) {
// compile the component based on its type and
// create a component factory
/** @type {?} */
const factory = this.componentFactoryResolver.resolveComponentFactory(component);
// the injector will be needed for DI in
// the custom component
/** @type {?} */
const childInjector = ReflectiveInjector.resolveAndCreate([], this.injector);
// create the actual component
/** @type {?} */
const componentRef = this.vcRef.createComponent(factory, 0, childInjector);
// pass the @Input parameters to the instance
Object.assign(componentRef.instance, parameters);
// add a destroy method to the modal instance
componentRef.instance['destroy'] = () => {
// this will close the backdrop
this.backdropRef.destroy();
// this will destroy the component
componentRef.destroy();
this.restoreFocus();
};
return componentRef;
}
/**
* @return {?}
*/
trapFocus() {
this.focusTrap = this.focusTrapFactory.create(this.componentNativeElement);
this.savePreviouslyFocusedElement();
this.focusTrap.focusInitialElementWhenReady();
}
/**
* @return {?}
*/
restoreFocus() {
/** @type {?} */
const toFocus = this.elementFocusedBeforeDialogWasOpened;
if (toFocus && typeof toFocus.focus === 'function') {
toFocus.focus();
}
if (this.focusTrap) {
this.focusTrap.destroy();
}
}
/**
* @return {?}
*/
savePreviouslyFocusedElement() {
if (this.document) {
this.elementFocusedBeforeDialogWasOpened = (/** @type {?} */ (this.document
.activeElement));
}
}
}
ModalService.decorators = [
{ type: Injectable },
];
/** @nocollapse */
ModalService.ctorParameters = () => [
{ type: ComponentFactoryResolver },
{ type: FocusTrapFactory },
{ type: undefined, decorators: [{ type: Optional }, { type: Inject, args: [DOCUMENT,] }] }
];
if (false) {
/** @type {?} */
ModalService.prototype.vcRef;
/** @type {?} */
ModalService.prototype.injector;
/** @type {?} */
ModalService.prototype.backdropRef;
/** @type {?} */
ModalService.prototype.elementFocusedBeforeDialogWasOpened;
/** @type {?} */
ModalService.prototype.componentRef;
/** @type {?} */
ModalService.prototype.componentNativeElement;
/** @type {?} */
ModalService.prototype.focusTrap;
/** @type {?} */
ModalService.prototype.componentFactoryResolver;
/** @type {?} */
ModalService.prototype.focusTrapFactory;
/** @type {?} */
ModalService.prototype.document;
}
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Save this to restore upon close.\r\n  private elementFocusedBeforeDialogWasOpened: HTMLElement | null = null;\r\n\r\n  private componentRef;\r\n\r\n  private componentNativeElement;\r\n\r\n  private focusTrap;\r\n\r\n  constructor(\r\n    private componentFactoryResolver: ComponentFactoryResolver,\r\n    private focusTrapFactory: FocusTrapFactory,\r\n    @Optional()\r\n    @Inject(DOCUMENT)\r\n    private document: any\r\n  ) {}\r\n\r\n  registerViewContainerRef(vcRef: ViewContainerRef): void {\r\n    this.vcRef = vcRef;\r\n  }\r\n\r\n  registerInjector(injector: Injector): void {\r\n    this.injector = injector;\r\n  }\r\n\r\n  /**\r\n   * Create component dynamically\r\n   */\r\n  create<T>(component: any, parameters?: Object): ComponentRef<T> {\r\n    // create backdrop\r\n    this.backdropRef = this.dynamicComponentLoader<ModalBackdropComponent>(\r\n      ModalBackdropComponent\r\n    );\r\n\r\n    // create dynamic component\r\n    this.componentRef = this.dynamicComponentLoader<T>(component, parameters);\r\n\r\n    this.componentNativeElement = this.componentRef.location.nativeElement;\r\n    this.trapFocus();\r\n\r\n    return this.componentRef;\r\n  }\r\n\r\n  close() {\r\n    if (!!this.componentRef) {\r\n      this.componentRef.destroy();\r\n    }\r\n  }\r\n\r\n  /**\r\n   * Load dynamic component and return componentRef\r\n   */\r\n  private dynamicComponentLoader<T>(\r\n    component: any,\r\n    parameters?: Object\r\n  ): ComponentRef<any> {\r\n    // compile the component based on its type and\r\n    // create a component factory\r\n    const factory = this.componentFactoryResolver.resolveComponentFactory(\r\n      component\r\n    );\r\n    // the injector will be needed for DI in\r\n    // the custom component\r\n    const childInjector = ReflectiveInjector.resolveAndCreate(\r\n      [],\r\n      this.injector\r\n    );\r\n    // create the actual component\r\n    const componentRef = this.vcRef.createComponent(factory, 0, childInjector);\r\n\r\n    // pass the @Input parameters to the instance\r\n    Object.assign(componentRef.instance, parameters);\r\n    // add a destroy method to the modal instance\r\n    componentRef.instance['destroy'] = () => {\r\n      // this will close the backdrop\r\n      this.backdropRef.destroy();\r\n      // this will destroy the component\r\n      componentRef.destroy();\r\n      this.restoreFocus();\r\n    };\r\n\r\n    return componentRef;\r\n  }\r\n\r\n  private trapFocus() {\r\n    this.focusTrap = this.focusTrapFactory.create(this.componentNativeElement);\r\n    this.savePreviouslyFocusedElement();\r\n    this.focusTrap.focusInitialElementWhenReady();\r\n  }\r\n\r\n  private restoreFocus() {\r\n    const toFocus = this.elementFocusedBeforeDialogWasOpened;\r\n\r\n    if (toFocus && typeof toFocus.focus === 'function') {\r\n      toFocus.focus();\r\n    }\r\n\r\n    if (this.focusTrap) {\r\n      this.focusTrap.destroy();\r\n    }\r\n  }\r\n\r\n  private savePreviouslyFocusedElement() {\r\n    if (this.document) {\r\n      this.elementFocusedBeforeDialogWasOpened = this.document\r\n        .activeElement as HTMLElement;\r\n    }\r\n  }\r\n}\r\n"]}