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ng-zorro-antd

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An enterprise-class UI components based on Ant Design and Angular

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/** * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://github.com/NG-ZORRO/ng-zorro-antd/blob/master/LICENSE */ import { ComponentPortal, TemplatePortal } from '@angular/cdk/portal'; import { ChangeDetectionStrategy, ChangeDetectorRef, Component, Injector, Input, TemplateRef, Type, ViewContainerRef, ViewEncapsulation } from '@angular/core'; import { Subject } from 'rxjs'; import { startWith, takeUntil } from 'rxjs/operators'; import { NzConfigService } from 'ng-zorro-antd/core/config'; import { NZ_EMPTY_COMPONENT_NAME } from './config'; function getEmptySize(componentName) { switch (componentName) { case 'table': case 'list': return 'normal'; case 'select': case 'tree-select': case 'cascader': case 'transfer': return 'small'; default: return ''; } } export class NzEmbedEmptyComponent { constructor(configService, viewContainerRef, cdr, injector) { this.configService = configService; this.viewContainerRef = viewContainerRef; this.cdr = cdr; this.injector = injector; this.contentType = 'string'; this.size = ''; this.destroy$ = new Subject(); } ngOnChanges(changes) { if (changes.nzComponentName) { this.size = getEmptySize(changes.nzComponentName.currentValue); } if (changes.specificContent && !changes.specificContent.isFirstChange()) { this.content = changes.specificContent.currentValue; this.renderEmpty(); } } ngOnInit() { this.subscribeDefaultEmptyContentChange(); } ngOnDestroy() { this.destroy$.next(); this.destroy$.complete(); } renderEmpty() { const content = this.content; if (typeof content === 'string') { this.contentType = 'string'; } else if (content instanceof TemplateRef) { const context = { $implicit: this.nzComponentName }; this.contentType = 'template'; this.contentPortal = new TemplatePortal(content, this.viewContainerRef, context); } else if (content instanceof Type) { const injector = Injector.create({ parent: this.injector, providers: [{ provide: NZ_EMPTY_COMPONENT_NAME, useValue: this.nzComponentName }] }); this.contentType = 'component'; this.contentPortal = new ComponentPortal(content, this.viewContainerRef, injector); } else { this.contentType = 'string'; this.contentPortal = undefined; } this.cdr.detectChanges(); } subscribeDefaultEmptyContentChange() { this.configService .getConfigChangeEventForComponent('empty') .pipe(startWith(true), takeUntil(this.destroy$)) .subscribe(() => { this.content = this.specificContent || this.getUserDefaultEmptyContent(); this.renderEmpty(); }); } getUserDefaultEmptyContent() { return (this.configService.getConfigForComponent('empty') || {}).nzDefaultEmptyContent; } } NzEmbedEmptyComponent.decorators = [ { type: Component, args: [{ changeDetection: ChangeDetectionStrategy.OnPush, encapsulation: ViewEncapsulation.None, selector: 'nz-embed-empty', exportAs: 'nzEmbedEmpty', template: ` <ng-container *ngIf="!content && specificContent !== null" [ngSwitch]="size"> <nz-empty *ngSwitchCase="'normal'" class="ant-empty-normal" [nzNotFoundImage]="'simple'"></nz-empty> <nz-empty *ngSwitchCase="'small'" class="ant-empty-small" [nzNotFoundImage]="'simple'"></nz-empty> <nz-empty *ngSwitchDefault></nz-empty> </ng-container> <ng-container *ngIf="content"> <ng-template *ngIf="contentType !== 'string'" [cdkPortalOutlet]="contentPortal"></ng-template> <ng-container *ngIf="contentType === 'string'"> {{ content }} </ng-container> </ng-container> ` },] } ]; NzEmbedEmptyComponent.ctorParameters = () => [ { type: NzConfigService }, { type: ViewContainerRef }, { type: ChangeDetectorRef }, { type: Injector } ]; NzEmbedEmptyComponent.propDecorators = { nzComponentName: [{ type: Input }], specificContent: [{ type: Input }] }; //# 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* Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://github.com/NG-ZORRO/ng-zorro-antd/blob/master/LICENSE\n */\n\nimport { ComponentPortal, Portal, TemplatePortal } from '@angular/cdk/portal';\nimport {\n  ChangeDetectionStrategy,\n  ChangeDetectorRef,\n  Component,\n  Injector,\n  Input,\n  OnChanges,\n  OnDestroy,\n  OnInit,\n  SimpleChanges,\n  TemplateRef,\n  Type,\n  ViewContainerRef,\n  ViewEncapsulation\n} from '@angular/core';\nimport { NzSafeAny } from 'ng-zorro-antd/core/types';\nimport { Subject } from 'rxjs';\nimport { startWith, takeUntil } from 'rxjs/operators';\n\nimport { NzConfigService } from 'ng-zorro-antd/core/config';\nimport { NzEmptyCustomContent, NzEmptySize, NZ_EMPTY_COMPONENT_NAME } from './config';\n\nfunction getEmptySize(componentName: string): NzEmptySize {\n  switch (componentName) {\n    case 'table':\n    case 'list':\n      return 'normal';\n    case 'select':\n    case 'tree-select':\n    case 'cascader':\n    case 'transfer':\n      return 'small';\n    default:\n      return '';\n  }\n}\n\ntype NzEmptyContentType = 'component' | 'template' | 'string';\n\n@Component({\n  changeDetection: ChangeDetectionStrategy.OnPush,\n  encapsulation: ViewEncapsulation.None,\n  selector: 'nz-embed-empty',\n  exportAs: 'nzEmbedEmpty',\n  template: `\n    <ng-container *ngIf=\"!content && specificContent !== null\" [ngSwitch]=\"size\">\n      <nz-empty *ngSwitchCase=\"'normal'\" class=\"ant-empty-normal\" [nzNotFoundImage]=\"'simple'\"></nz-empty>\n      <nz-empty *ngSwitchCase=\"'small'\" class=\"ant-empty-small\" [nzNotFoundImage]=\"'simple'\"></nz-empty>\n      <nz-empty *ngSwitchDefault></nz-empty>\n    </ng-container>\n    <ng-container *ngIf=\"content\">\n      <ng-template *ngIf=\"contentType !== 'string'\" [cdkPortalOutlet]=\"contentPortal\"></ng-template>\n      <ng-container *ngIf=\"contentType === 'string'\">\n        {{ content }}\n      </ng-container>\n    </ng-container>\n  `\n})\nexport class NzEmbedEmptyComponent implements OnChanges, OnInit, OnDestroy {\n  @Input() nzComponentName?: string;\n  @Input() specificContent?: NzEmptyCustomContent;\n\n  content?: NzEmptyCustomContent;\n  contentType: NzEmptyContentType = 'string';\n  contentPortal?: Portal<NzSafeAny>;\n  size: NzEmptySize = '';\n\n  private destroy$ = new Subject<void>();\n\n  constructor(\n    private configService: NzConfigService,\n    private viewContainerRef: ViewContainerRef,\n    private cdr: ChangeDetectorRef,\n    private injector: Injector\n  ) {}\n\n  ngOnChanges(changes: SimpleChanges): void {\n    if (changes.nzComponentName) {\n      this.size = getEmptySize(changes.nzComponentName.currentValue);\n    }\n\n    if (changes.specificContent && !changes.specificContent.isFirstChange()) {\n      this.content = changes.specificContent.currentValue;\n      this.renderEmpty();\n    }\n  }\n\n  ngOnInit(): void {\n    this.subscribeDefaultEmptyContentChange();\n  }\n\n  ngOnDestroy(): void {\n    this.destroy$.next();\n    this.destroy$.complete();\n  }\n\n  private renderEmpty(): void {\n    const content = this.content;\n\n    if (typeof content === 'string') {\n      this.contentType = 'string';\n    } else if (content instanceof TemplateRef) {\n      const context = { $implicit: this.nzComponentName } as NzSafeAny;\n      this.contentType = 'template';\n      this.contentPortal = new TemplatePortal(content, this.viewContainerRef, context);\n    } else if (content instanceof Type) {\n      const injector = Injector.create({\n        parent: this.injector,\n        providers: [{ provide: NZ_EMPTY_COMPONENT_NAME, useValue: this.nzComponentName }]\n      });\n      this.contentType = 'component';\n      this.contentPortal = new ComponentPortal(content, this.viewContainerRef, injector);\n    } else {\n      this.contentType = 'string';\n      this.contentPortal = undefined;\n    }\n\n    this.cdr.detectChanges();\n  }\n\n  private subscribeDefaultEmptyContentChange(): void {\n    this.configService\n      .getConfigChangeEventForComponent('empty')\n      .pipe(startWith(true), takeUntil(this.destroy$))\n      .subscribe(() => {\n        this.content = this.specificContent || this.getUserDefaultEmptyContent();\n        this.renderEmpty();\n      });\n  }\n\n  private getUserDefaultEmptyContent(): Type<NzSafeAny> | TemplateRef<string> | string | undefined {\n    return (this.configService.getConfigForComponent('empty') || {}).nzDefaultEmptyContent;\n  }\n}\n"]}