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@ngx-formly/core

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Formly is a dynamic (JSON powered) form library for Angular that bring unmatched maintainability to your application's forms.

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import { Pipe } from '@angular/core'; import { BehaviorSubject, Observable } from 'rxjs'; import { filter, map, tap } from 'rxjs/operators'; import * as i0 from "@angular/core"; export class FormlySelectOptionsPipe { transform(options, field) { if (!(options instanceof Observable)) { options = this.observableOf(options, field); } else { this.dispose(); } return options.pipe(map((value) => this.transformOptions(value, field))); } ngOnDestroy() { this.dispose(); } transformOptions(options, field) { const to = this.transformSelectProps(field); const opts = []; const groups = {}; options?.forEach((option) => { const o = this.transformOption(option, to); if (o.group) { const id = groups[o.label]; if (id === undefined) { groups[o.label] = opts.push(o) - 1; } else { o.group.forEach((o) => opts[id].group.push(o)); } } else { opts.push(o); } }); return opts; } transformOption(option, props) { const group = props.groupProp(option); if (Array.isArray(group)) { return { label: props.labelProp(option), group: group.map((opt) => this.transformOption(opt, props)), }; } option = { label: props.labelProp(option), value: props.valueProp(option), disabled: !!props.disabledProp(option), }; if (group) { return { label: group, group: [option] }; } return option; } transformSelectProps(field) { const props = field?.props || field?.templateOptions || {}; const selectPropFn = (prop) => (typeof prop === 'function' ? prop : (o) => o[prop]); return { groupProp: selectPropFn(props.groupProp || 'group'), labelProp: selectPropFn(props.labelProp || 'label'), valueProp: selectPropFn(props.valueProp || 'value'), disabledProp: selectPropFn(props.disabledProp || 'disabled'), }; } dispose() { if (this._options) { this._options.complete(); this._options = null; } if (this._subscription) { this._subscription.unsubscribe(); this._subscription = null; } } observableOf(options, f) { this.dispose(); if (f && f.options && f.options.fieldChanges) { this._subscription = f.options.fieldChanges .pipe(filter(({ property, type, field }) => { return (type === 'expressionChanges' && (property.indexOf('templateOptions.options') === 0 || property.indexOf('props.options') === 0) && field === f && Array.isArray(field.props.options) && !!this._options); }), tap(() => this._options.next(f.props.options))) .subscribe(); } this._options = new BehaviorSubject(options); return this._options.asObservable(); } static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "18.2.13", ngImport: i0, type: FormlySelectOptionsPipe, deps: [], target: i0.ɵɵFactoryTarget.Pipe }); } static { this.ɵpipe = i0.ɵɵngDeclarePipe({ minVersion: "14.0.0", version: "18.2.13", ngImport: i0, type: FormlySelectOptionsPipe, isStandalone: true, name: "formlySelectOptions" }); } } i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "18.2.13", ngImport: i0, type: FormlySelectOptionsPipe, decorators: [{ type: Pipe, args: [{ name: 'formlySelectOptions', standalone: true }] }] }); export class LegacyFormlySelectOptionsPipe extends FormlySelectOptionsPipe { static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "18.2.13", ngImport: i0, type: LegacyFormlySelectOptionsPipe, deps: null, target: i0.ɵɵFactoryTarget.Pipe }); } static { this.ɵpipe = i0.ɵɵngDeclarePipe({ minVersion: "14.0.0", version: "18.2.13", ngImport: i0, type: LegacyFormlySelectOptionsPipe, name: "formlySelectOptions" }); } } i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "18.2.13", ngImport: i0, type: LegacyFormlySelectOptionsPipe, decorators: [{ type: Pipe, args: [{ name: 'formlySelectOptions', standalone: false }] }] }); //# 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{ OnDestroy, Pipe, PipeTransform } from '@angular/core';\nimport { BehaviorSubject, Observable, Subscription } from 'rxjs';\nimport { filter, map, tap } from 'rxjs/operators';\nimport { FormlyFieldConfig, FormlyFieldProps } from '@ngx-formly/core';\n\nexport interface FormlySelectOption {\n  label: string;\n  disabled?: boolean;\n  value?: any;\n  group?: FormlySelectOption[];\n}\n\nexport interface FormlyFieldSelectProps extends FormlyFieldProps {\n  groupProp?: string | ((option: any) => string);\n  labelProp?: string | ((option: any) => string);\n  valueProp?: string | ((option: any) => any);\n  disabledProp?: string | ((option: any) => boolean);\n}\n\ntype ITransformOption = {\n  labelProp: (option: any) => string;\n  valueProp: (option: any) => any;\n  disabledProp: (option: any) => boolean;\n  groupProp: (option: any) => string;\n};\n\n@Pipe({ name: 'formlySelectOptions', standalone: true })\nexport class FormlySelectOptionsPipe implements PipeTransform, OnDestroy {\n  private _subscription: Subscription;\n  private _options: BehaviorSubject<any[]>;\n\n  transform(options: any, field?: FormlyFieldConfig): Observable<FormlySelectOption[]> {\n    if (!(options instanceof Observable)) {\n      options = this.observableOf(options, field);\n    } else {\n      this.dispose();\n    }\n\n    return (options as Observable<any>).pipe(map((value) => this.transformOptions(value, field)));\n  }\n\n  ngOnDestroy(): void {\n    this.dispose();\n  }\n\n  private transformOptions(options: any[], field?: FormlyFieldConfig): FormlySelectOption[] {\n    const to = this.transformSelectProps(field);\n\n    const opts: FormlySelectOption[] = [];\n    const groups: { [id: string]: number } = {};\n\n    options?.forEach((option) => {\n      const o = this.transformOption(option, to);\n      if (o.group) {\n        const id = groups[o.label];\n        if (id === undefined) {\n          groups[o.label] = opts.push(o) - 1;\n        } else {\n          o.group.forEach((o) => opts[id].group.push(o));\n        }\n      } else {\n        opts.push(o);\n      }\n    });\n\n    return opts;\n  }\n\n  private transformOption(option: any, props: ITransformOption): FormlySelectOption {\n    const group = props.groupProp(option);\n    if (Array.isArray(group)) {\n      return {\n        label: props.labelProp(option),\n        group: group.map((opt) => this.transformOption(opt, props)),\n      };\n    }\n\n    option = {\n      label: props.labelProp(option),\n      value: props.valueProp(option),\n      disabled: !!props.disabledProp(option),\n    };\n\n    if (group) {\n      return { label: group, group: [option] };\n    }\n\n    return option;\n  }\n\n  private transformSelectProps(field?: FormlyFieldConfig): ITransformOption {\n    const props = field?.props || field?.templateOptions || {};\n    const selectPropFn = (prop: any) => (typeof prop === 'function' ? prop : (o: any) => o[prop]);\n\n    return {\n      groupProp: selectPropFn(props.groupProp || 'group'),\n      labelProp: selectPropFn(props.labelProp || 'label'),\n      valueProp: selectPropFn(props.valueProp || 'value'),\n      disabledProp: selectPropFn(props.disabledProp || 'disabled'),\n    };\n  }\n\n  private dispose() {\n    if (this._options) {\n      this._options.complete();\n      this._options = null;\n    }\n\n    if (this._subscription) {\n      this._subscription.unsubscribe();\n      this._subscription = null;\n    }\n  }\n\n  private observableOf(options: any, f?: FormlyFieldConfig) {\n    this.dispose();\n    if (f && f.options && f.options.fieldChanges) {\n      this._subscription = f.options.fieldChanges\n        .pipe(\n          filter(({ property, type, field }) => {\n            return (\n              type === 'expressionChanges' &&\n              (property.indexOf('templateOptions.options') === 0 || property.indexOf('props.options') === 0) &&\n              field === f &&\n              Array.isArray(field.props.options) &&\n              !!this._options\n            );\n          }),\n          tap(() => this._options.next(f.props.options as any)),\n        )\n        .subscribe();\n    }\n\n    this._options = new BehaviorSubject(options);\n    return this._options.asObservable();\n  }\n}\n\n@Pipe({ name: 'formlySelectOptions', standalone: false })\nexport class LegacyFormlySelectOptionsPipe extends FormlySelectOptionsPipe implements PipeTransform, OnDestroy {}\n"]}