@taiga-ui/cdk
Version:
Base library for creating Angular components and applications using Taiga UI principles regarding of actual visual appearance
96 lines • 16.1 kB
JavaScript
import { ChangeDetectorRef, computed, Directive, inject, Input, signal, untracked, } from '@angular/core';
import { takeUntilDestroyed } from '@angular/core/rxjs-interop';
import { NgControl, NgModel } from '@angular/forms';
import { EMPTY_FUNCTION } from '@taiga-ui/cdk/constants';
import { TUI_FALLBACK_VALUE } from '@taiga-ui/cdk/tokens';
import { tuiProvide } from '@taiga-ui/cdk/utils';
import { delay, distinctUntilChanged, EMPTY, filter, map, merge, startWith, Subject, switchMap, } from 'rxjs';
import { TUI_IDENTITY_VALUE_TRANSFORMER, TuiValueTransformer } from './value-transformer';
import * as i0 from "@angular/core";
const FLAGS = { self: true, optional: true };
/**
* Basic ControlValueAccessor class to build form components upon
*/
class TuiControl {
constructor() {
this.fallback = inject(TUI_FALLBACK_VALUE, FLAGS);
this.refresh$ = new Subject();
this.pseudoInvalid = signal(null);
this.internal = signal(this.fallback);
this.control = inject(NgControl, { self: true });
this.cdr = inject(ChangeDetectorRef);
this.transformer = inject(TuiValueTransformer, FLAGS) ?? TUI_IDENTITY_VALUE_TRANSFORMER;
this.value = computed(() => this.internal() ?? this.fallback);
this.readOnly = signal(false);
this.touched = signal(false);
this.status = signal(undefined);
this.disabled = computed(() => this.status() === 'DISABLED');
this.interactive = computed(() => !this.disabled() && !this.readOnly());
this.invalid = computed(() => this.pseudoInvalid() !== null
? !!this.pseudoInvalid() && this.interactive()
: this.interactive() && this.touched() && this.status() === 'INVALID');
this.mode = computed(() =>
// eslint-disable-next-line no-nested-ternary
this.readOnly() ? 'readonly' : this.invalid() ? 'invalid' : 'valid');
this.onTouched = EMPTY_FUNCTION;
this.onChange = EMPTY_FUNCTION;
this.control.valueAccessor = this;
this.refresh$
.pipe(delay(0), startWith(null), map(() => this.control.control), filter(Boolean), distinctUntilChanged(), switchMap((c) => merge(c.valueChanges, c.statusChanges, c.events || EMPTY).pipe(startWith(null))), takeUntilDestroyed())
.subscribe(() => this.update());
}
set readOnlySetter(readOnly) {
this.readOnly.set(readOnly);
}
set invalidSetter(invalid) {
this.pseudoInvalid.set(invalid);
}
registerOnChange(onChange) {
this.refresh$.next();
this.onChange = (value) => {
const internal = untracked(() => this.internal());
if (value === internal) {
return;
}
onChange(this.transformer.toControlValue(value));
this.internal.set(value);
this.update();
};
}
registerOnTouched(onTouched) {
this.onTouched = () => {
onTouched();
this.update();
};
}
setDisabledState() {
this.update();
}
writeValue(value) {
// TODO: https://github.com/angular/angular/issues/14988
const safe = this.control instanceof NgModel ? this.control.model : value;
this.internal.set(this.transformer.fromControlValue(safe));
this.update();
}
update() {
this.status.set(this.control.control?.status);
this.touched.set(!!this.control.control?.touched);
this.cdr.markForCheck();
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.2.12", ngImport: i0, type: TuiControl, deps: [], target: i0.ɵɵFactoryTarget.Directive }); }
static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.2.12", type: TuiControl, inputs: { readOnlySetter: ["readOnly", "readOnlySetter"], invalidSetter: ["invalid", "invalidSetter"] }, ngImport: i0 }); }
}
export { TuiControl };
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.2.12", ngImport: i0, type: TuiControl, decorators: [{
type: Directive
}], ctorParameters: function () { return []; }, propDecorators: { readOnlySetter: [{
type: Input,
args: ['readOnly']
}], invalidSetter: [{
type: Input,
args: ['invalid']
}] } });
export function tuiAsControl(control) {
return tuiProvide(TuiControl, control);
}
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type {Provider, Type} from '@angular/core';\nimport {\n    ChangeDetectorRef,\n    computed,\n    Directive,\n    inject,\n    Input,\n    signal,\n    untracked,\n} from '@angular/core';\nimport {takeUntilDestroyed} from '@angular/core/rxjs-interop';\nimport type {ControlValueAccessor, FormControlStatus} from '@angular/forms';\nimport {NgControl, NgModel} from '@angular/forms';\nimport {EMPTY_FUNCTION} from '@taiga-ui/cdk/constants';\nimport {TUI_FALLBACK_VALUE} from '@taiga-ui/cdk/tokens';\nimport {tuiProvide} from '@taiga-ui/cdk/utils';\nimport {\n    delay,\n    distinctUntilChanged,\n    EMPTY,\n    filter,\n    map,\n    merge,\n    startWith,\n    Subject,\n    switchMap,\n} from 'rxjs';\n\nimport {TUI_IDENTITY_VALUE_TRANSFORMER, TuiValueTransformer} from './value-transformer';\n\nconst FLAGS = {self: true, optional: true};\n\n/**\n * Basic ControlValueAccessor class to build form components upon\n */\n@Directive()\nexport abstract class TuiControl<T> implements ControlValueAccessor {\n    private readonly fallback = inject(TUI_FALLBACK_VALUE, FLAGS) as T;\n    private readonly refresh$ = new Subject<void>();\n    private readonly pseudoInvalid = signal<boolean | null>(null);\n    private readonly internal = signal(this.fallback);\n\n    protected readonly control = inject(NgControl, {self: true});\n    protected readonly cdr = inject(ChangeDetectorRef);\n    protected transformer =\n        inject(TuiValueTransformer, FLAGS) ?? TUI_IDENTITY_VALUE_TRANSFORMER;\n\n    public readonly value = computed(() => this.internal() ?? this.fallback);\n    public readonly readOnly = signal(false);\n    public readonly touched = signal(false);\n    public readonly status = signal<FormControlStatus | undefined>(undefined);\n    public readonly disabled = computed(() => this.status() === 'DISABLED');\n    public readonly interactive = computed(() => !this.disabled() && !this.readOnly());\n    public readonly invalid = computed(() =>\n        this.pseudoInvalid() !== null\n            ? !!this.pseudoInvalid() && this.interactive()\n            : this.interactive() && this.touched() && this.status() === 'INVALID',\n    );\n\n    public readonly mode = computed(() =>\n        // eslint-disable-next-line no-nested-ternary\n        this.readOnly() ? 'readonly' : this.invalid() ? 'invalid' : 'valid',\n    );\n\n    public onTouched = EMPTY_FUNCTION;\n    public onChange: (value: T) => void = EMPTY_FUNCTION;\n\n    constructor() {\n        this.control.valueAccessor = this;\n        this.refresh$\n            .pipe(\n                delay(0),\n                startWith(null),\n                map(() => this.control.control),\n                filter(Boolean),\n                distinctUntilChanged(),\n                switchMap((c) =>\n                    merge(\n                        c.valueChanges,\n                        c.statusChanges,\n                        (c as any).events || EMPTY,\n                    ).pipe(startWith(null)),\n                ),\n                takeUntilDestroyed(),\n            )\n            .subscribe(() => this.update());\n    }\n\n    @Input('readOnly')\n    public set readOnlySetter(readOnly: boolean) {\n        this.readOnly.set(readOnly);\n    }\n\n    @Input('invalid')\n    public set invalidSetter(invalid: boolean | null) {\n        this.pseudoInvalid.set(invalid);\n    }\n\n    public registerOnChange(onChange: (value: unknown) => void): void {\n        this.refresh$.next();\n\n        this.onChange = (value: T) => {\n            const internal = untracked(() => this.internal());\n\n            if (value === internal) {\n                return;\n            }\n\n            onChange(this.transformer.toControlValue(value));\n            this.internal.set(value);\n            this.update();\n        };\n    }\n\n    public registerOnTouched(onTouched: () => void): void {\n        this.onTouched = () => {\n            onTouched();\n            this.update();\n        };\n    }\n\n    public setDisabledState(): void {\n        this.update();\n    }\n\n    public writeValue(value: T | null): void {\n        // TODO: https://github.com/angular/angular/issues/14988\n        const safe = this.control instanceof NgModel ? this.control.model : value;\n\n        this.internal.set(this.transformer.fromControlValue(safe));\n        this.update();\n    }\n\n    private update(): void {\n        this.status.set(this.control.control?.status);\n        this.touched.set(!!this.control.control?.touched);\n        this.cdr.markForCheck();\n    }\n}\n\nexport function tuiAsControl<T>(control: Type<TuiControl<T>>): Provider {\n    return tuiProvide(TuiControl, control);\n}\n"]}