@ux-aspects/ux-aspects
Version:
Open source user interface framework for building modern, responsive, mobile big data applications
119 lines • 15.7 kB
JavaScript
import { ChangeDetectorRef, ContentChildren, Directive, EventEmitter, forwardRef, inject, Input, Output } from '@angular/core';
import { NG_VALUE_ACCESSOR } from '@angular/forms';
import { Subject } from 'rxjs';
import { takeUntil } from 'rxjs/operators';
import { RadioButtonComponent } from '../radiobutton.component';
import * as i0 from "@angular/core";
export const RADIO_GROUP_CONTROL_VALUE_ACCESSOR = {
provide: NG_VALUE_ACCESSOR,
useExisting: forwardRef(() => RadioButtonGroupDirective),
multi: true
};
export class RadioButtonGroupDirective {
constructor() {
this._changeDetector = inject(ChangeDetectorRef);
/** Emit when the currently selected value changes */
this.valueChange = new EventEmitter();
/** Used to inform Angular forms that the component has been touched */
// eslint-disable-next-line @typescript-eslint/no-empty-function
this.onTouched = () => { };
/** Used to inform Angular forms that the component value has changed */
// eslint-disable-next-line @typescript-eslint/no-empty-function
this.onChange = () => { };
/** Unsubscribe from all subscriptions on destroy */
this._onDestroy$ = new Subject();
/** Internally store the current value */
this._value = null;
}
/** Define the current selected value within the group */
set value(value) {
this._value = value;
this.updateSelectedRadioButton();
}
/** Return the currently selected value */
get value() {
return this._value;
}
ngAfterContentInit() {
this.updateSelectedRadioButton();
// update the selected items any time new ones are added
this._radioButtons.changes.pipe(takeUntil(this._onDestroy$))
.subscribe(() => this.updateSelectedRadioButton());
}
ngOnDestroy() {
this._onDestroy$.next();
this._onDestroy$.complete();
}
/** Allow Angular forms for provide us with a callback for when the input value changes */
registerOnChange(fn) {
this.onChange = fn;
}
/** Allow Angular forms for provide us with a callback for when the touched state changes */
registerOnTouched(fn) {
this.onTouched = fn;
}
/** Allow Angular forms to give us the current value */
writeValue(value) {
this.value = value;
this._changeDetector.markForCheck();
}
/** Allow Angular forms to disable the component */
setDisabledState(isDisabled) {
if (this._radioButtons) {
this._radioButtons.forEach(radio => radio.setDisabledState(isDisabled));
this._changeDetector.markForCheck();
}
}
/** Emit the currently selected value */
emitChange(value) {
this.valueChange.next(value);
this.onChange(value);
this.onTouched();
}
/** Determine and set the correct internal tabindex */
determineAndSetInternalTabIndex() {
const firstEnabled = this._radioButtons.find(radio => {
return radio.disabled === false;
});
this._radioButtons.forEach(radio => {
if (this._value !== undefined) {
radio.setInternalTabindex(radio.option === this._value ? 0 : -1);
}
else {
radio.setInternalTabindex(firstEnabled === radio ? 0 : -1);
}
});
}
/** Inform all child radio buttons of the latest value */
updateSelectedRadioButton() {
// update the selected value in all radio buttons
if (this._radioButtons) {
this.determineAndSetInternalTabIndex();
this._radioButtons.forEach(radio => radio.writeValue(this._value));
}
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "18.2.12", ngImport: i0, type: RadioButtonGroupDirective, deps: [], target: i0.ɵɵFactoryTarget.Directive }); }
static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "18.2.12", type: RadioButtonGroupDirective, selector: "ux-radio-button-group, [uxRadioButtonGroup]", inputs: { value: "value" }, outputs: { valueChange: "valueChange" }, host: { attributes: { "role": "radiogroup" } }, providers: [
RADIO_GROUP_CONTROL_VALUE_ACCESSOR
], queries: [{ propertyName: "_radioButtons", predicate: i0.forwardRef(() => RadioButtonComponent), descendants: true }], ngImport: i0 }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "18.2.12", ngImport: i0, type: RadioButtonGroupDirective, decorators: [{
type: Directive,
args: [{
selector: 'ux-radio-button-group, [uxRadioButtonGroup]',
providers: [
RADIO_GROUP_CONTROL_VALUE_ACCESSOR
],
host: {
'role': 'radiogroup'
}
}]
}], propDecorators: { value: [{
type: Input
}], valueChange: [{
type: Output
}], _radioButtons: [{
type: ContentChildren,
args: [forwardRef(() => RadioButtonComponent), { descendants: true }]
}] } });
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{ AfterContentInit, ChangeDetectorRef, ContentChildren, Directive, EventEmitter, ExistingProvider, forwardRef, inject, Input, OnDestroy, Output, QueryList } from '@angular/core';\nimport { ControlValueAccessor, NG_VALUE_ACCESSOR } from '@angular/forms';\nimport { Subject } from 'rxjs';\nimport { takeUntil } from 'rxjs/operators';\nimport { RadioButtonComponent } from '../radiobutton.component';\n\nexport const RADIO_GROUP_CONTROL_VALUE_ACCESSOR: ExistingProvider = {\n    provide: NG_VALUE_ACCESSOR,\n    useExisting: forwardRef(() => RadioButtonGroupDirective),\n    multi: true\n};\n\n@Directive({\n    selector: 'ux-radio-button-group, [uxRadioButtonGroup]',\n    providers: [\n        RADIO_GROUP_CONTROL_VALUE_ACCESSOR\n    ],\n    host: {\n        'role': 'radiogroup'\n    }\n})\nexport class RadioButtonGroupDirective<T = unknown> implements ControlValueAccessor, AfterContentInit, OnDestroy  {\n    private readonly _changeDetector = inject(ChangeDetectorRef);\n\n    /** Define the current selected value within the group */\n    @Input() set value(value: T) {\n        this._value = value;\n        this.updateSelectedRadioButton();\n    }\n\n    /** Return the currently selected value */\n    get value(): T {\n        return this._value;\n    }\n\n    /** Emit when the currently selected value changes */\n    @Output() valueChange = new EventEmitter<T>();\n\n    /** Used to inform Angular forms that the component has been touched */\n    // eslint-disable-next-line @typescript-eslint/no-empty-function\n    onTouched: () => void = () => {};\n\n    /** Used to inform Angular forms that the component value has changed */\n    // eslint-disable-next-line @typescript-eslint/no-empty-function\n    onChange: (value: any) => void = () => {};\n\n    @ContentChildren(forwardRef(() => RadioButtonComponent), { descendants: true }) _radioButtons: QueryList<RadioButtonComponent>;\n\n    /** Unsubscribe from all subscriptions on destroy */\n    private readonly _onDestroy$ = new Subject<void>();\n\n    /** Internally store the current value */\n    private _value: T = null;\n\n    ngAfterContentInit(): void {\n        this.updateSelectedRadioButton();\n\n        // update the selected items any time new ones are added\n        this._radioButtons.changes.pipe(takeUntil(this._onDestroy$))\n            .subscribe(() => this.updateSelectedRadioButton());\n    }\n\n    ngOnDestroy(): void {\n        this._onDestroy$.next();\n        this._onDestroy$.complete();\n    }\n\n    /** Allow Angular forms for provide us with a callback for when the input value changes */\n     \n    registerOnChange(fn: (value: any) => void): void {\n        this.onChange = fn;\n    }\n\n    /** Allow Angular forms for provide us with a callback for when the touched state changes */\n    registerOnTouched(fn: () => void): void {\n        this.onTouched = fn;\n    }\n\n    /** Allow Angular forms to give us the current value */\n     \n    writeValue(value: any): void {\n        this.value = value;\n        this._changeDetector.markForCheck();\n    }\n\n    /** Allow Angular forms to disable the component */\n    setDisabledState(isDisabled: boolean): void {\n        if (this._radioButtons) {\n            this._radioButtons.forEach(radio => radio.setDisabledState(isDisabled));\n            this._changeDetector.markForCheck();\n        }\n    }\n\n    /** Emit the currently selected value */\n    emitChange(value: T): void {\n        this.valueChange.next(value);\n        this.onChange(value);\n        this.onTouched();\n    }\n\n    /** Determine and set the correct internal tabindex */\n    determineAndSetInternalTabIndex() {\n\n        const firstEnabled = this._radioButtons.find(radio => {\n            return radio.disabled === false;\n        });\n\n        this._radioButtons.forEach(radio => {\n\n            if (this._value !== undefined) {\n                radio.setInternalTabindex(radio.option === this._value ? 0 : -1);\n            } else {\n                radio.setInternalTabindex(firstEnabled === radio ? 0 : -1);\n            }\n        });\n    }\n\n    /** Inform all child radio buttons of the latest value */\n    private updateSelectedRadioButton(): void {\n        // update the selected value in all radio buttons\n        if (this._radioButtons) {\n            this.determineAndSetInternalTabIndex();\n            this._radioButtons.forEach(radio => radio.writeValue(this._value));\n        }\n\n    }\n}\n"]}