ng-devui
Version:
DevUI components based on Angular
138 lines • 19.8 kB
JavaScript
import { ComponentFactoryResolver, Directive, ElementRef, HostBinding, Injector, Input, TemplateRef, ViewContainerRef, } from '@angular/core';
import { Observable, Subscription, forkJoin, from, throwError } from 'rxjs';
import { catchError } from 'rxjs/operators';
import { LoadingBackdropComponent } from './loading-backdrop.component';
import { LoadingComponent } from './loading.component';
import * as i0 from "@angular/core";
export class LoadingDirective {
constructor(componentFactoryResolver, elementRef, injector, triggerElementRef, viewContainerRef) {
this.componentFactoryResolver = componentFactoryResolver;
this.elementRef = elementRef;
this.injector = injector;
this.triggerElementRef = triggerElementRef;
this.viewContainerRef = viewContainerRef;
this.loadingStyle = 'default';
this.active = true;
}
ngOnChanges(changes) {
const { backdrop, loading, loadingTemplateRef, message, positionType, showLoading, view, zIndex } = changes;
const changeArr = [backdrop, loading, loadingTemplateRef, message, positionType, showLoading, view, zIndex];
if (changeArr.find((item) => item !== undefined)) {
// loading 兼容showLoading, 赋值类型为 boolean 时触发显示
const isBoolean = typeof this.loading === 'boolean';
const flag = isBoolean ? this.loading : undefined;
const isLoading = this.showLoading !== undefined ? this.showLoading : flag;
if (isLoading !== undefined) {
this.showLoadingChangeEvent(isLoading);
}
if (!isBoolean && this.loading) {
this.loadingChangeEvent(this.loading);
}
}
}
loadingChangeEvent(loading) {
if (loading instanceof Subscription) {
this.startLoading();
loading.add(() => this.endLoading());
return;
}
const loadingArr = [].concat(loading).map((item) => (item instanceof Observable ? item : from(item)));
if (loadingArr.length > 0) {
this.startLoading();
forkJoin(loadingArr)
.pipe(catchError((error) => throwError(error)))
.subscribe({
next: null,
error: () => this.endLoading(),
complete: () => this.endLoading(),
});
}
}
showLoadingChangeEvent(showLoading) {
if (showLoading === true) {
this.startLoading();
}
else {
this.endLoading();
}
}
startLoading() {
this.position = this.positionType || 'relative';
if (this.backdrop && !this.backdropRef) {
this.createLoadingBackdrop();
}
if (!this.backdrop && this.backdropRef) {
this.backdropRef.destroy();
this.backdropRef = null;
}
if (!this.loadingRef) {
this.loadingRef = this.viewContainerRef.createComponent(LoadingComponent, { index: null, injector: this.injector });
this.insert(this.loadingRef.hostView);
}
Object.assign(this.loadingRef.instance, {
message: this.message,
loadingTemplateRef: this.loadingTemplateRef,
top: this.view ? this.view.top : '50%',
left: this.view ? this.view.left : '50%',
isCustomPosition: !!this.view,
zIndex: this.zIndex ? this.zIndex : '',
loadingStyle: this.loadingStyle,
});
}
endLoading() {
if (this.loadingRef) {
this.loadingRef.destroy();
this.loadingRef = null;
}
if (this.backdropRef) {
this.backdropRef.destroy();
this.backdropRef = null;
}
this.position = '';
}
createLoadingBackdrop() {
this.backdropRef =
!this.backdropRef && this.viewContainerRef.createComponent(LoadingBackdropComponent, { index: null, injector: this.injector });
this.insert(this.backdropRef.hostView);
Object.assign(this.backdropRef.instance, {
triggerElementRef: this.triggerElementRef,
backdrop: this.backdrop,
zIndex: this.zIndex ? this.zIndex : '',
});
}
insert(viewRef) {
viewRef.rootNodes.forEach((node) => this.elementRef.nativeElement.appendChild(node));
return viewRef;
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "18.2.13", ngImport: i0, type: LoadingDirective, deps: [{ token: i0.ComponentFactoryResolver }, { token: i0.ElementRef }, { token: i0.Injector }, { token: i0.ElementRef }, { token: i0.ViewContainerRef }], target: i0.ɵɵFactoryTarget.Directive }); }
static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "18.2.13", type: LoadingDirective, selector: "[dLoading]", inputs: { backdrop: "backdrop", message: "message", positionType: "positionType", showLoading: "showLoading", view: "view", zIndex: "zIndex", loading: "loading", loadingStyle: "loadingStyle", loadingTemplateRef: "loadingTemplateRef" }, host: { properties: { "style.position": "this.position" } }, exportAs: ["dLoading"], usesOnChanges: true, ngImport: i0 }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "18.2.13", ngImport: i0, type: LoadingDirective, decorators: [{
type: Directive,
args: [{
selector: '[dLoading]',
exportAs: 'dLoading',
}]
}], ctorParameters: () => [{ type: i0.ComponentFactoryResolver }, { type: i0.ElementRef }, { type: i0.Injector }, { type: i0.ElementRef }, { type: i0.ViewContainerRef }], propDecorators: { backdrop: [{
type: Input
}], message: [{
type: Input
}], positionType: [{
type: Input
}], showLoading: [{
type: Input
}], view: [{
type: Input
}], zIndex: [{
type: Input
}], loading: [{
type: Input
}], loadingStyle: [{
type: Input
}], loadingTemplateRef: [{
type: Input
}], position: [{
type: HostBinding,
args: ['style.position']
}] } });
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{\r\n  ComponentFactoryResolver,\r\n  ComponentRef,\r\n  Directive,\r\n  ElementRef,\r\n  EmbeddedViewRef,\r\n  HostBinding,\r\n  Injector,\r\n  Input,\r\n  OnChanges,\r\n  SimpleChanges,\r\n  TemplateRef,\r\n  ViewContainerRef,\r\n  ViewRef,\r\n} from '@angular/core';\r\nimport { Observable, Subscription, forkJoin, from, throwError } from 'rxjs';\r\nimport { catchError } from 'rxjs/operators';\r\nimport { LoadingBackdropComponent } from './loading-backdrop.component';\r\nimport { LoadingComponent } from './loading.component';\r\nimport { ILoadingViewPosition, LoadingStyle, LoadingType } from './loading.types';\r\n@Directive({\r\n  selector: '[dLoading]',\r\n  exportAs: 'dLoading',\r\n})\r\nexport class LoadingDirective implements OnChanges {\r\n  @Input() backdrop: boolean;\r\n  @Input() message: string;\r\n  @Input() positionType: string;\r\n  @Input() showLoading: boolean;\r\n  @Input() view: ILoadingViewPosition;\r\n  @Input() zIndex: number;\r\n  @Input() loading: LoadingType | boolean;\r\n  @Input() loadingStyle: LoadingStyle = 'default';\r\n  @Input() loadingTemplateRef: TemplateRef<any>;\r\n  @HostBinding('style.position') position: string;\r\n  active = true;\r\n  backdropRef: ComponentRef<any>;\r\n  loadingRef: ComponentRef<any>;\r\n\r\n  constructor(\r\n    private componentFactoryResolver: ComponentFactoryResolver,\r\n    private elementRef: ElementRef,\r\n    private injector: Injector,\r\n    private triggerElementRef: ElementRef,\r\n    private viewContainerRef: ViewContainerRef\r\n  ) {}\r\n\r\n  ngOnChanges(changes: SimpleChanges): void {\r\n    const { backdrop, loading, loadingTemplateRef, message, positionType, showLoading, view, zIndex } = changes;\r\n    const changeArr = [backdrop, loading, loadingTemplateRef, message, positionType, showLoading, view, zIndex];\r\n    if (changeArr.find((item) => item !== undefined)) {\r\n      // loading 兼容showLoading, 赋值类型为 boolean 时触发显示\r\n      const isBoolean = typeof this.loading === 'boolean';\r\n      const flag = isBoolean ? this.loading : undefined;\r\n      const isLoading = this.showLoading !== undefined ? this.showLoading : flag;\r\n      if (isLoading !== undefined) {\r\n        this.showLoadingChangeEvent(isLoading as boolean);\r\n      }\r\n      if (!isBoolean && this.loading) {\r\n        this.loadingChangeEvent(this.loading as LoadingType);\r\n      }\r\n    }\r\n  }\r\n\r\n  loadingChangeEvent(loading: LoadingType): void {\r\n    if (loading instanceof Subscription) {\r\n      this.startLoading();\r\n      loading.add(() => this.endLoading());\r\n      return;\r\n    }\r\n    const loadingArr = [].concat(loading).map((item) => (item instanceof Observable ? item : from(item)));\r\n    if (loadingArr.length > 0) {\r\n      this.startLoading();\r\n      forkJoin(loadingArr)\r\n        .pipe(catchError((error) => throwError(error)))\r\n        .subscribe({\r\n          next: null,\r\n          error: () => this.endLoading(),\r\n          complete: () => this.endLoading(),\r\n        });\r\n    }\r\n  }\r\n\r\n  showLoadingChangeEvent(showLoading: boolean): void {\r\n    if (showLoading === true) {\r\n      this.startLoading();\r\n    } else {\r\n      this.endLoading();\r\n    }\r\n  }\r\n\r\n  private startLoading(): void {\r\n    this.position = this.positionType || 'relative';\r\n\r\n    if (this.backdrop && !this.backdropRef) {\r\n      this.createLoadingBackdrop();\r\n    }\r\n\r\n    if (!this.backdrop && this.backdropRef) {\r\n      this.backdropRef.destroy();\r\n      this.backdropRef = null;\r\n    }\r\n\r\n    if (!this.loadingRef) {\r\n      this.loadingRef = this.viewContainerRef.createComponent(LoadingComponent, { index: null, injector: this.injector });\r\n\r\n      this.insert(this.loadingRef.hostView);\r\n    }\r\n\r\n    Object.assign(this.loadingRef.instance, {\r\n      message: this.message,\r\n      loadingTemplateRef: this.loadingTemplateRef,\r\n      top: this.view ? this.view.top : '50%',\r\n      left: this.view ? this.view.left : '50%',\r\n      isCustomPosition: !!this.view,\r\n      zIndex: this.zIndex ? this.zIndex : '',\r\n      loadingStyle: this.loadingStyle,\r\n    });\r\n  }\r\n\r\n  private endLoading(): void {\r\n    if (this.loadingRef) {\r\n      this.loadingRef.destroy();\r\n      this.loadingRef = null;\r\n    }\r\n\r\n    if (this.backdropRef) {\r\n      this.backdropRef.destroy();\r\n      this.backdropRef = null;\r\n    }\r\n\r\n    this.position = '';\r\n  }\r\n\r\n  private createLoadingBackdrop(): void {\r\n    this.backdropRef =\r\n      !this.backdropRef && this.viewContainerRef.createComponent(LoadingBackdropComponent, { index: null, injector: this.injector });\r\n\r\n    this.insert(this.backdropRef.hostView);\r\n\r\n    Object.assign(this.backdropRef.instance, {\r\n      triggerElementRef: this.triggerElementRef,\r\n      backdrop: this.backdrop,\r\n      zIndex: this.zIndex ? this.zIndex : '',\r\n    });\r\n  }\r\n\r\n  private insert(viewRef: ViewRef): ViewRef {\r\n    (viewRef as EmbeddedViewRef<any>).rootNodes.forEach((node) => this.elementRef.nativeElement.appendChild(node));\r\n    return viewRef;\r\n  }\r\n}\r\n"]}