13005189282

Committed 28 Jan 2025 06:56AM CUT coverage: 91.628% (+0.008%) from 91.62%

Build # 13005189282

Build Type

Pull #15298

github

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web-flow

Commit Message

Merge a168f378d into 0a93e080d

Pull Request Pull Request #15298: feat(checkbox): extract common logic in a directive

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95.12

/projects/igniteui-angular/src/lib/checkbox/checkbox-base.directive.ts

import {
    Directive,
    EventEmitter,
    HostListener,
    HostBinding,
    Input,
    Output,
    ViewChild,
    ElementRef,
    ChangeDetectorRef,
    Renderer2,
    Optional,
    Self,
    booleanAttribute,
    inject,
    DestroyRef,
    Inject,
    AfterViewInit,
} from '@angular/core';
import { NgControl, Validators } from '@angular/forms';
import { IBaseEventArgs, getComponentTheme, mkenum } from '../core/utils';
import { noop, Subject } from 'rxjs';
import { takeUntil } from 'rxjs/operators';
import {
    IgxTheme,
    THEME_TOKEN,
    ThemeToken,
} from '../services/theme/theme.token';

export const LabelPosition = /*@__PURE__*/ mkenum({
    BEFORE: 'before',
    AFTER: 'after'
});
export type LabelPosition = typeof LabelPosition[keyof typeof LabelPosition];

export interface IChangeCheckboxEventArgs extends IBaseEventArgs {
    checked: boolean;
    value?: any;
}

let nextId = 0;

@Directive()
export class CheckboxBaseDirective implements AfterViewInit {
    /**
     * An event that is emitted after the checkbox state is changed.
     * Provides references to the `IgxCheckboxComponent` and the `checked` property as event arguments.
     */
    // eslint-disable-next-line @angular-eslint/no-output-native
    @Output() public readonly change: EventEmitter<IChangeCheckboxEventArgs> =
        new EventEmitter<IChangeCheckboxEventArgs>();

    /**
     * @hidden
     * @internal
     */
    public destroy$ = new Subject<boolean>();

    /**
     * Returns reference to the native checkbox element.
     *
     * @example
     * ```typescript
     * let checkboxElement =  this.component.checkboxElement;
     * ```
     */
    @ViewChild('checkbox', { static: true })
    public nativeInput: ElementRef;

    /**
     * Returns reference to the native label element.
     * ```typescript
     *
     * @example
     * let labelElement =  this.component.nativeLabel;
     * ```
     */
    @ViewChild('label', { static: true })
    public nativeLabel: ElementRef;

    public cssClass: string;
    public disabled: boolean;
    public readonly: boolean;
    public indeterminate: boolean;
    public focused: boolean;
    public invalid: boolean;

    @Input({ transform: booleanAttribute })
    public get checked() {
        return this._checked;
    }

    public set checked(value: boolean) {
        if (this._checked !== value) {
            this._checked = value;
            this._onChangeCallback(this._checked);
        }
    }

    /**
     * Returns reference to the `nativeElement` of the igx-checkbox/igx-switch.
     *
     * @example
     * ```typescript
     * let nativeElement = this.component.nativeElement;
     * ```
     */
    public get nativeElement() {
        return this.nativeInput.nativeElement;
    }

    /**
     * Returns reference to the label placeholder element.
     * ```typescript
     *
     * @example
     * let labelPlaceholder =  this.component.placeholderLabel;
     * ```
     */
    @ViewChild('placeholderLabel', { static: true })
    public placeholderLabel: ElementRef;

    /**
     * Sets/gets the `id` of the checkbox component.
     * If not set, the `id` of the first checkbox component will be `"igx-checkbox-0"`.
     *
     * @example
     * ```html
     * <igx-checkbox id="my-first-checkbox"></igx-checkbox>
     * ```
     * ```typescript
     * let checkboxId =  this.checkbox.id;
     * ```
     */
    @HostBinding('attr.id')
    @Input()
    public id = `igx-checkbox-${nextId++}`;

    /**
     * Sets/gets the id of the `label` element.
     * If not set, the id of the `label` in the first checkbox component will be `"igx-checkbox-0-label"`.
     *
     * @example
     * ```html
     * <igx-checkbox labelId="Label1"></igx-checkbox>
     * ```
     * ```typescript
     * let labelId =  this.component.labelId;
     * ```
     */
    @Input() public labelId = `${this.id}-label`;

    /**
     * Sets/gets the `value` attribute.
     *
     * @example
     * ```html
     * <igx-checkbox [value]="'CheckboxValue'"></igx-checkbox>
     * ```
     * ```typescript
     * let value =  this.checkbox.value;
     * ```
     */
    @Input() public value: any;

    /**
     * Sets/gets the `name` attribute.
     *
     * @example
     * ```html
     * <igx-checkbox name="Checkbox1"></igx-checkbox>
     * ```
     * ```typescript
     * let name =  this.checkbox.name;
     * ```
     */
    @Input() public name: string;

    /**
     * Sets/gets the value of the `tabindex` attribute.
     *
     * @example
     * ```html
     * <igx-checkbox [tabindex]="1"></igx-checkbox>
     * ```
     * ```typescript
     * let tabIndex =  this.checkbox.tabindex;
     * ```
     */
    @Input() public tabindex: number = null;

    /**
     *  Sets/gets the position of the `label`.
     *  If not set, the `labelPosition` will have value `"after"`.
     *
     * @example
     * ```html
     * <igx-checkbox labelPosition="before"></igx-checkbox>
     * ```
     * ```typescript
     * let labelPosition =  this.checkbox.labelPosition;
     * ```
     */
    @Input()
    public labelPosition: LabelPosition | string = LabelPosition.AFTER;

    /**
     * Enables/Disables the ripple effect.
     * If not set, `disableRipple` will have value `false`.
     *
     * @example
     * ```html
     * <igx-checkbox [disableRipple]="true"></igx-checkbox>
     * ```
     * ```typescript
     * let isRippleDisabled = this.checkbox.desableRipple;
     * ```
     */
    @Input({ transform: booleanAttribute })
    public disableRipple = false;

    /**
     * Sets/gets the `aria-labelledby` attribute.
     * If not set, the `aria-labelledby` will be equal to the value of `labelId` attribute.
     *
     * @example
     * ```html
     * <igx-checkbox aria-labelledby="Checkbox1"></igx-checkbox>
     * ```
     * ```typescript
     * let ariaLabelledBy = this.checkbox.ariaLabelledBy;
     * ```
     */
    @Input('aria-labelledby')
    public ariaLabelledBy = this.labelId;

    /**
     * Sets/gets the value of the `aria-label` attribute.
     *
     * @example
     * ```html
     * <igx-checkbox aria-label="Checkbox1"></igx-checkbox>
     * ```
     * ```typescript
     * let ariaLabel = this.checkbox.ariaLabel;
     * ```
     */
    @Input('aria-label')
    public ariaLabel: string | null = null;

    constructor(
        protected cdr: ChangeDetectorRef,
        protected renderer: Renderer2,
        @Inject(THEME_TOKEN)
        protected themeToken: ThemeToken,
        @Optional() @Self() public ngControl: NgControl
    ) {
        if (this.ngControl !== null) {
            this.ngControl.valueAccessor = this;
        }

        this.theme = this.themeToken.theme;

        const { unsubscribe } = this.themeToken.onChange((theme) => {
            if (this.theme !== theme) {
                this.theme = theme;
                this.cdr.detectChanges();
            }
        });

        this.destroyRef.onDestroy(() => unsubscribe);
    }

    /**
     * Sets/gets whether the checkbox is required.
     * If not set, `required` will have value `false`.
     *
     * @example
     * ```html
     * <igx-checkbox required></igx-checkbox>
     * ```
     * ```typescript
     * let isRequired = this.checkbox.required;
     * ```
     */
    // @Input({ transform: booleanAttribute })
    // public get required(): boolean {
    //     return this._required || this.nativeElement.hasAttribute('required');
    // }
    // public set required(value: boolean) {
    //     this._required = value;
    // }
    @Input({ transform: booleanAttribute })
    public get required(): boolean {
        return this._required || this.nativeElement.hasAttribute('required');
    }
    public set required(value: boolean) {
        this._required = value;
    }

    /**
     * @hidden
     * @internal
     */
    public ngAfterViewInit() {
        if (this.ngControl) {
            this.ngControl.statusChanges
                .pipe(takeUntil(this.destroy$))
                .subscribe(this.updateValidityState.bind(this));

            if (
                this.ngControl.control.validator ||
                this.ngControl.control.asyncValidator
            ) {
                this._required = this.ngControl?.control?.hasValidator(
                    Validators.required
                );
                this.cdr.detectChanges();
            }
        }

        this.setComponentTheme();
    }

    /**
     * @hidden
     * @internal
     */
    public inputId = `${this.id}-input`;

    /**
     * @hidden
     */
    protected _onChangeCallback: (_: any) => void = noop;

    /**
     * @hidden
     */
    private _onTouchedCallback: () => void = noop;

    /**
     * @hidden
     * @internal
     */
    protected _checked = false;

    /**
     * @hidden
     * @internal
     */
    protected theme: IgxTheme;

    /**
     * @hidden
     * @internal
     */
    public _required = false;
    private elRef = inject(ElementRef);
    protected destroyRef = inject(DestroyRef);

    private setComponentTheme() {
        if (!this.themeToken.preferToken) {
            const theme = getComponentTheme(this.elRef.nativeElement);

            if (theme && theme !== this.theme) {
                this.theme = theme;
                this.cdr.markForCheck();
            }
        }
    }

    /** @hidden @internal */
    @HostListener('keyup', ['$event'])
    public onKeyUp(event: KeyboardEvent) {
        event.stopPropagation();
        this.focused = true;
    }

    /** @hidden @internal */
    @HostListener('click', ['$event'])
    public _onCheckboxClick(event: PointerEvent | MouseEvent) {
        // Since the original checkbox is hidden and the label
        // is used for styling and to change the checked state of the checkbox,
        // we need to prevent the checkbox click event from bubbling up
        // as it gets triggered on label click
        // NOTE: The above is no longer valid, as the native checkbox is not labeled
        // by the SVG anymore.
        if (this.disabled || this.readonly) {
            // readonly prevents the component from changing state (see toggle() method).
            // However, the native checkbox can still be activated through user interaction (focus + space, label click)
            // Prevent the native change so the input remains in sync
            event.preventDefault();
            return;
        }

        this.nativeElement.focus();

        this.indeterminate = false;
        this.checked = !this.checked;
        this.updateValidityState();

        // K.D. March 23, 2021 Emitting on click and not on the setter because otherwise every component
        // bound on change would have to perform self checks for weather the value has changed because
        // of the initial set on initialization
        this.change.emit({
            checked: this.checked,
            value: this.value,
            owner: this,
        });
    }

    /**
     * @hidden
     * @internal
     */
    public get ariaChecked() {
        if (this.indeterminate) {
            return 'mixed';
        } else {
            return this.checked;
        }
    }

    /** @hidden @internal */
    public _onCheckboxChange(event: Event) {
        // We have to stop the original checkbox change event
        // from bubbling up since we emit our own change event
        event.stopPropagation();
    }

    /** @hidden @internal */
    @HostListener('blur')
    public onBlur() {
        this.focused = false;
        this._onTouchedCallback();
        this.updateValidityState();
    }

    /** @hidden @internal */
    public writeValue(value: boolean) {
        this._checked = value;
    }

    /** @hidden @internal */
    public get labelClass(): string {
        switch (this.labelPosition) {
            case LabelPosition.BEFORE:
                return `${this.cssClass}__label--before`;
            case LabelPosition.AFTER:
            default:
                return `${this.cssClass}__label`;
        }
    }

    /** @hidden @internal */
    public registerOnChange(fn: (_: any) => void) {
        this._onChangeCallback = fn;
    }

    /** @hidden @internal */
    public registerOnTouched(fn: () => void) {
        this._onTouchedCallback = fn;
    }

    /** @hidden @internal */
    public setDisabledState(isDisabled: boolean) {
        this.disabled = isDisabled;
    }

    /** @hidden @internal */
    public getEditElement() {
        return this.nativeInput.nativeElement;
    }

    /**
     * @hidden
     * @internal
     */
    protected updateValidityState() {
        if (this.ngControl) {
            if (
                !this.disabled &&
                !this.readonly &&
                (this.ngControl.control.touched || this.ngControl.control.dirty)
            ) {
                // the control is not disabled and is touched or dirty
                this.invalid = this.ngControl.invalid;
            } else {
                //  if the control is untouched, pristine, or disabled, its state is initial. This is when the user did not interact
                //  with the checkbox or when the form/control is reset
                this.invalid = false;
            }
        } else {
            this.checkNativeValidity();
        }
    }

    /**
     * A function to assign a native validity property of a checkbox.
     * This should be used when there's no ngControl
     *
     * @hidden
     * @internal
     */
    private checkNativeValidity() {
        if (
            !this.disabled &&
            this._required &&
            !this.checked &&
            !this.readonly
        ) {
            this.invalid = true;
        } else {
            this.invalid = false;
        }
    }
}

1	import {
2	Directive,
3	EventEmitter,
4	HostListener,
5	HostBinding,
6	Input,
7	Output,
8	ViewChild,
9	ElementRef,
10	ChangeDetectorRef,
11	Renderer2,
12	Optional,
13	Self,
14	booleanAttribute,
15	inject,
16	DestroyRef,
17	Inject,
18	AfterViewInit,
19	} from '@angular/core';
20	import { NgControl, Validators } from '@angular/forms';
21	import { IBaseEventArgs, getComponentTheme, mkenum } from '../core/utils';
22	import { noop, Subject } from 'rxjs';
23	import { takeUntil } from 'rxjs/operators';
24	import {
25	IgxTheme,
26	THEME_TOKEN,
27	ThemeToken,
28	} from '../services/theme/theme.token';
29
30	export const LabelPosition = /@__PURE__/ mkenum({	2✔
31	BEFORE: 'before',
32	AFTER: 'after'
33	});
34	export type LabelPosition = typeof LabelPosition[keyof typeof LabelPosition];
35
36	export interface IChangeCheckboxEventArgs extends IBaseEventArgs {
37	checked: boolean;
38	value?: any;
39	}
40
41	let nextId = 0;	2✔
42
43	@Directive()
44	export class CheckboxBaseDirective implements AfterViewInit {	2✔
45	/**
46	* An event that is emitted after the checkbox state is changed.
47	* Provides references to the `IgxCheckboxComponent` and the `checked` property as event arguments.
48	*/
49	// eslint-disable-next-line @angular-eslint/no-output-native
50	@Output() public readonly change: EventEmitter<IChangeCheckboxEventArgs> =	8,174✔
51	new EventEmitter<IChangeCheckboxEventArgs>();
52
53	/**
54	* @hidden
55	* @internal
56	*/
57	public destroy$ = new Subject<boolean>();	8,174✔
58
59	/**
60	* Returns reference to the native checkbox element.
61	*
62	* @example
63	* ```typescript
64	* let checkboxElement = this.component.checkboxElement;
65	* ```
66	*/
67	@ViewChild('checkbox', { static: true })
68	public nativeInput: ElementRef;
69
70	/**
71	* Returns reference to the native label element.
72	* ```typescript
73	*
74	* @example
75	* let labelElement = this.component.nativeLabel;
76	* ```
77	*/
78	@ViewChild('label', { static: true })
79	public nativeLabel: ElementRef;
80
81	public cssClass: string;
82	public disabled: boolean;
83	public readonly: boolean;
84	public indeterminate: boolean;
85	public focused: boolean;
86	public invalid: boolean;
87
88	@Input({ transform: booleanAttribute })
89	public get checked() {
90	return this._checked;	173,113✔
91	}
92
93	public set checked(value: boolean) {
94	if (this._checked !== value) {	10,351✔
95	this._checked = value;	4,060✔
96	this._onChangeCallback(this._checked);	4,060✔
97	}
98	}
99
100	/**
101	* Returns reference to the `nativeElement` of the igx-checkbox/igx-switch.
102	*
103	* @example
104	* ```typescript
105	* let nativeElement = this.component.nativeElement;
106	* ```
107	*/
108	public get nativeElement() {
109	return this.nativeInput.nativeElement;	116,139✔
110	}
111
112	/**
113	* Returns reference to the label placeholder element.
114	* ```typescript
115	*
116	* @example
117	* let labelPlaceholder = this.component.placeholderLabel;
118	* ```
119	*/
120	@ViewChild('placeholderLabel', { static: true })
121	public placeholderLabel: ElementRef;
122
123	/**
124	* Sets/gets the `id` of the checkbox component.
125	* If not set, the `id` of the first checkbox component will be `"igx-checkbox-0"`.
126	*
127	* @example
128	* ```html
129	* <igx-checkbox id="my-first-checkbox"></igx-checkbox>
130	* ```
131	* ```typescript
132	* let checkboxId = this.checkbox.id;
133	* ```
134	*/
135	@HostBinding('attr.id')
136	@Input()
137	public id = `igx-checkbox-${nextId++}`;	8,174✔
138
139	/**
140	* Sets/gets the id of the `label` element.
141	* If not set, the id of the `label` in the first checkbox component will be `"igx-checkbox-0-label"`.
142	*
143	* @example
144	* ```html
145	* <igx-checkbox labelId="Label1"></igx-checkbox>
146	* ```
147	* ```typescript
148	* let labelId = this.component.labelId;
149	* ```
150	*/
151	@Input() public labelId = `${this.id}-label`;	8,174✔
152
153	/**
154	* Sets/gets the `value` attribute.
155	*
156	* @example
157	* ```html
158	* <igx-checkbox [value]="'CheckboxValue'"></igx-checkbox>
159	* ```
160	* ```typescript
161	* let value = this.checkbox.value;
162	* ```
163	*/
164	@Input() public value: any;
165
166	/**
167	* Sets/gets the `name` attribute.
168	*
169	* @example
170	* ```html
171	* <igx-checkbox name="Checkbox1"></igx-checkbox>
172	* ```
173	* ```typescript
174	* let name = this.checkbox.name;
175	* ```
176	*/
177	@Input() public name: string;
178
179	/**
180	* Sets/gets the value of the `tabindex` attribute.
181	*
182	* @example
183	* ```html
184	* <igx-checkbox [tabindex]="1"></igx-checkbox>
185	* ```
186	* ```typescript
187	* let tabIndex = this.checkbox.tabindex;
188	* ```
189	*/
190	@Input() public tabindex: number = null;	8,174✔
191
192	/**
193	* Sets/gets the position of the `label`.
194	* If not set, the `labelPosition` will have value `"after"`.
195	*
196	* @example
197	* ```html
198	* <igx-checkbox labelPosition="before"></igx-checkbox>
199	* ```
200	* ```typescript
201	* let labelPosition = this.checkbox.labelPosition;
202	* ```
203	*/
204	@Input()
205	public labelPosition: LabelPosition \| string = LabelPosition.AFTER;	8,174✔
206
207	/**
208	* Enables/Disables the ripple effect.
209	* If not set, `disableRipple` will have value `false`.
210	*
211	* @example
212	* ```html
213	* <igx-checkbox [disableRipple]="true"></igx-checkbox>
214	* ```
215	* ```typescript
216	* let isRippleDisabled = this.checkbox.desableRipple;
217	* ```
218	*/
219	@Input({ transform: booleanAttribute })
220	public disableRipple = false;	8,174✔
221
222	/**
223	* Sets/gets the `aria-labelledby` attribute.
224	* If not set, the `aria-labelledby` will be equal to the value of `labelId` attribute.
225	*
226	* @example
227	* ```html
228	* <igx-checkbox aria-labelledby="Checkbox1"></igx-checkbox>
229	* ```
230	* ```typescript
231	* let ariaLabelledBy = this.checkbox.ariaLabelledBy;
232	* ```
233	*/
234	@Input('aria-labelledby')
235	public ariaLabelledBy = this.labelId;	8,174✔
236
237	/**
238	* Sets/gets the value of the `aria-label` attribute.
239	*
240	* @example
241	* ```html
242	* <igx-checkbox aria-label="Checkbox1"></igx-checkbox>
243	* ```
244	* ```typescript
245	* let ariaLabel = this.checkbox.ariaLabel;
246	* ```
247	*/
248	@Input('aria-label')
249	public ariaLabel: string \| null = null;	8,174✔
250
251	constructor(
252	protected cdr: ChangeDetectorRef,	8,174✔
253	protected renderer: Renderer2,	8,174✔
254	@Inject(THEME_TOKEN)
255	protected themeToken: ThemeToken,	8,174✔
256	@Optional() @Self() public ngControl: NgControl	8,174✔
257	) {
258	if (this.ngControl !== null) {	8,174✔
259	this.ngControl.valueAccessor = this;	44✔
260	}
261
262	this.theme = this.themeToken.theme;	8,174✔
263
264	const { unsubscribe } = this.themeToken.onChange((theme) => {	8,174✔
265	if (this.theme !== theme) {	8,174!
NEW 266	this.theme = theme;	×
NEW 267	this.cdr.detectChanges();	×
268	}
269	});
270
271	this.destroyRef.onDestroy(() => unsubscribe);	8,174✔
272	}
273
274	/**
275	* Sets/gets whether the checkbox is required.
276	* If not set, `required` will have value `false`.
277	*
278	* @example
279	* ```html
280	* <igx-checkbox required></igx-checkbox>
281	* ```
282	* ```typescript
283	* let isRequired = this.checkbox.required;
284	* ```
285	*/
286	// @Input({ transform: booleanAttribute })
287	// public get required(): boolean {
288	// return this._required \|\| this.nativeElement.hasAttribute('required');
289	// }
290	// public set required(value: boolean) {
291	// this._required = value;
292	// }
293	@Input({ transform: booleanAttribute })
294	public get required(): boolean {
295	return this._required \|\| this.nativeElement.hasAttribute('required');	116,206✔
296	}
297	public set required(value: boolean) {
298	this._required = value;	60✔
299	}
300
301	/**
302	* @hidden
303	* @internal
304	*/
305	public ngAfterViewInit() {
306	if (this.ngControl) {	8,172✔
307	this.ngControl.statusChanges	44✔
308	.pipe(takeUntil(this.destroy$))
309	.subscribe(this.updateValidityState.bind(this));
310
311	if (	44✔
312	this.ngControl.control.validator \|\|	79✔
313	this.ngControl.control.asyncValidator
314	) {
315	this._required = this.ngControl?.control?.hasValidator(	9✔
316	Validators.required
317	);
318	this.cdr.detectChanges();	9✔
319	}
320	}
321
322	this.setComponentTheme();	8,172✔
323	}
324
325	/**
326	* @hidden
327	* @internal
328	*/
329	public inputId = `${this.id}-input`;	8,174✔
330
331	/**
332	* @hidden
333	*/
334	protected _onChangeCallback: (_: any) => void = noop;	8,174✔
335
336	/**
337	* @hidden
338	*/
339	private _onTouchedCallback: () => void = noop;	8,174✔
340
341	/**
342	* @hidden
343	* @internal
344	*/
345	protected _checked = false;	8,174✔
346
347	/**
348	* @hidden
349	* @internal
350	*/
351	protected theme: IgxTheme;
352
353	/**
354	* @hidden
355	* @internal
356	*/
357	public _required = false;	8,174✔
358	private elRef = inject(ElementRef);	8,174✔
359	protected destroyRef = inject(DestroyRef);	8,174✔
360
361	private setComponentTheme() {
362	if (!this.themeToken.preferToken) {	8,172✔
363	const theme = getComponentTheme(this.elRef.nativeElement);	8,172✔
364
365	if (theme && theme !== this.theme) {	8,172!
NEW 366	this.theme = theme;	×
NEW 367	this.cdr.markForCheck();	×
368	}
369	}
370	}
371
372	/** @hidden @internal */
373	@HostListener('keyup', ['$event'])
374	public onKeyUp(event: KeyboardEvent) {
375	event.stopPropagation();	14✔
376	this.focused = true;	14✔
377	}
378
379	/** @hidden @internal */
380	@HostListener('click', ['$event'])
381	public _onCheckboxClick(event: PointerEvent \| MouseEvent) {
382	// Since the original checkbox is hidden and the label
383	// is used for styling and to change the checked state of the checkbox,
384	// we need to prevent the checkbox click event from bubbling up
385	// as it gets triggered on label click
386	// NOTE: The above is no longer valid, as the native checkbox is not labeled
387	// by the SVG anymore.
388	if (this.disabled \|\| this.readonly) {	152✔
389	// readonly prevents the component from changing state (see toggle() method).
390	// However, the native checkbox can still be activated through user interaction (focus + space, label click)
391	// Prevent the native change so the input remains in sync
392	event.preventDefault();	71✔
393	return;	71✔
394	}
395
396	this.nativeElement.focus();	81✔
397
398	this.indeterminate = false;	81✔
399	this.checked = !this.checked;	81✔
400	this.updateValidityState();	81✔
401
402	// K.D. March 23, 2021 Emitting on click and not on the setter because otherwise every component
403	// bound on change would have to perform self checks for weather the value has changed because
404	// of the initial set on initialization
405	this.change.emit({	81✔
406	checked: this.checked,
407	value: this.value,
408	owner: this,
409	});
410	}
411
412	/**
413	* @hidden
414	* @internal
415	*/
416	public get ariaChecked() {
417	if (this.indeterminate) {	57,735✔
418	return 'mixed';	1,046✔
419	} else {
420	return this.checked;	56,689✔
421	}
422	}
423
424	/** @hidden @internal */
425	public _onCheckboxChange(event: Event) {
426	// We have to stop the original checkbox change event
427	// from bubbling up since we emit our own change event
428	event.stopPropagation();	60✔
429	}
430
431	/** @hidden @internal */
432	@HostListener('blur')
433	public onBlur() {
434	this.focused = false;	51✔
435	this._onTouchedCallback();	51✔
436	this.updateValidityState();	51✔
437	}
438
439	/** @hidden @internal */
440	public writeValue(value: boolean) {
441	this._checked = value;	53✔
442	}
443
444	/** @hidden @internal */
445	public get labelClass(): string {
446	switch (this.labelPosition) {	58,095✔
447	case LabelPosition.BEFORE:
448	return `${this.cssClass}__label--before`;	6✔
449	case LabelPosition.AFTER:
450	default:
451	return `${this.cssClass}__label`;	58,089✔
452	}
453	}
454
455	/** @hidden @internal */
456	public registerOnChange(fn: (_: any) => void) {
457	this._onChangeCallback = fn;	66✔
458	}
459
460	/** @hidden @internal */
461	public registerOnTouched(fn: () => void) {
462	this._onTouchedCallback = fn;	80✔
463	}
464
465	/** @hidden @internal */
466	public setDisabledState(isDisabled: boolean) {
467	this.disabled = isDisabled;	45✔
468	}
469
470	/** @hidden @internal */
471	public getEditElement() {
472	return this.nativeInput.nativeElement;	26✔
473	}
474
475	/**
476	* @hidden
477	* @internal
478	*/
479	protected updateValidityState() {
480	if (this.ngControl) {	187✔
481	if (	77✔
482	!this.disabled &&	270✔
483	!this.readonly &&
484	(this.ngControl.control.touched \|\| this.ngControl.control.dirty)
485	) {
486	// the control is not disabled and is touched or dirty
487	this.invalid = this.ngControl.invalid;	42✔
488	} else {
489	// if the control is untouched, pristine, or disabled, its state is initial. This is when the user did not interact
490	// with the checkbox or when the form/control is reset
491	this.invalid = false;	35✔
492	}
493	} else {
494	this.checkNativeValidity();	110✔
495	}
496	}
497
498	/**
499	* A function to assign a native validity property of a checkbox.
500	* This should be used when there's no ngControl
501	*
502	* @hidden
503	* @internal
504	*/
505	private checkNativeValidity() {
506	if (	110✔
507	!this.disabled &&	238✔
508	this._required &&
509	!this.checked &&
510	!this.readonly
511	) {
512	this.invalid = true;	8✔
513	} else {
514	this.invalid = false;	102✔
515	}
516	}
517	}

IgniteUI / igniteui-angular / 13005189282

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