@ionic/angular
Version:
Angular specific wrappers for @ionic/core
145 lines • 16.8 kB
JavaScript
import { Directive, HostListener } from '@angular/core';
import { NgControl } from '@angular/forms';
import { raf } from '../../utils/util';
import * as i0 from "@angular/core";
// TODO(FW-2827): types
export class ValueAccessor {
injector;
elementRef;
onChange = () => {
/**/
};
onTouched = () => {
/**/
};
lastValue;
statusChanges;
constructor(injector, elementRef) {
this.injector = injector;
this.elementRef = elementRef;
}
writeValue(value) {
this.elementRef.nativeElement.value = this.lastValue = value;
setIonicClasses(this.elementRef);
}
/**
* Notifies the ControlValueAccessor of a change in the value of the control.
*
* This is called by each of the ValueAccessor directives when we want to update
* the status and validity of the form control. For example with text components this
* is called when the ionInput event is fired. For select components this is called
* when the ionChange event is fired.
*
* This also updates the Ionic form status classes on the element.
*
* @param el The component element.
* @param value The new value of the control.
*/
handleValueChange(el, value) {
if (el === this.elementRef.nativeElement) {
if (value !== this.lastValue) {
this.lastValue = value;
this.onChange(value);
}
setIonicClasses(this.elementRef);
}
}
_handleBlurEvent(el) {
if (el === this.elementRef.nativeElement) {
this.onTouched();
setIonicClasses(this.elementRef);
}
}
registerOnChange(fn) {
this.onChange = fn;
}
registerOnTouched(fn) {
this.onTouched = fn;
}
setDisabledState(isDisabled) {
this.elementRef.nativeElement.disabled = isDisabled;
}
ngOnDestroy() {
if (this.statusChanges) {
this.statusChanges.unsubscribe();
}
}
ngAfterViewInit() {
let ngControl;
try {
ngControl = this.injector.get(NgControl);
}
catch {
/* No FormControl or ngModel binding */
}
if (!ngControl) {
return;
}
// Listen for changes in validity, disabled, or pending states
if (ngControl.statusChanges) {
this.statusChanges = ngControl.statusChanges.subscribe(() => setIonicClasses(this.elementRef));
}
/**
* TODO FW-2787: Remove this in favor of https://github.com/angular/angular/issues/10887
* whenever it is implemented.
*/
const formControl = ngControl.control;
if (formControl) {
const methodsToPatch = ['markAsTouched', 'markAllAsTouched', 'markAsUntouched', 'markAsDirty', 'markAsPristine'];
methodsToPatch.forEach((method) => {
if (typeof formControl[method] !== 'undefined') {
const oldFn = formControl[method].bind(formControl);
formControl[method] = (...params) => {
oldFn(...params);
setIonicClasses(this.elementRef);
};
}
});
}
}
/** @nocollapse */ static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.2.12", ngImport: i0, type: ValueAccessor, deps: [{ token: i0.Injector }, { token: i0.ElementRef }], target: i0.ɵɵFactoryTarget.Directive });
/** @nocollapse */ static ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.2.12", type: ValueAccessor, host: { listeners: { "ionBlur": "_handleBlurEvent($event.target)" } }, ngImport: i0 });
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.2.12", ngImport: i0, type: ValueAccessor, decorators: [{
type: Directive
}], ctorParameters: function () { return [{ type: i0.Injector }, { type: i0.ElementRef }]; }, propDecorators: { _handleBlurEvent: [{
type: HostListener,
args: ['ionBlur', ['$event.target']]
}] } });
export const setIonicClasses = (element) => {
raf(() => {
const input = element.nativeElement;
const hasValue = input.value != null && input.value.toString().length > 0;
const classes = getClasses(input);
setClasses(input, classes);
const item = input.closest('ion-item');
if (item) {
if (hasValue) {
setClasses(item, [...classes, 'item-has-value']);
}
else {
setClasses(item, classes);
}
}
});
};
const getClasses = (element) => {
const classList = element.classList;
const classes = [];
for (let i = 0; i < classList.length; i++) {
const item = classList.item(i);
if (item !== null && startsWith(item, 'ng-')) {
classes.push(`ion-${item.substring(3)}`);
}
}
return classes;
};
const setClasses = (element, classes) => {
const classList = element.classList;
classList.remove('ion-valid', 'ion-invalid', 'ion-touched', 'ion-untouched', 'ion-dirty', 'ion-pristine');
classList.add(...classes);
};
const startsWith = (input, search) => {
return input.substring(0, search.length) === search;
};
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For example with text components this\n   * is called when the ionInput event is fired. For select components this is called\n   * when the ionChange event is fired.\n   *\n   * This also updates the Ionic form status classes on the element.\n   *\n   * @param el The component element.\n   * @param value The new value of the control.\n   */\n  handleValueChange(el: HTMLElement, value: any): void {\n    if (el === this.elementRef.nativeElement) {\n      if (value !== this.lastValue) {\n        this.lastValue = value;\n        this.onChange(value);\n      }\n      setIonicClasses(this.elementRef);\n    }\n  }\n\n  @HostListener('ionBlur', ['$event.target'])\n  _handleBlurEvent(el: any): void {\n    if (el === this.elementRef.nativeElement) {\n      this.onTouched();\n      setIonicClasses(this.elementRef);\n    }\n  }\n\n  registerOnChange(fn: (value: any) => void): void {\n    this.onChange = fn;\n  }\n\n  registerOnTouched(fn: () => void): void {\n    this.onTouched = fn;\n  }\n\n  setDisabledState(isDisabled: boolean): void {\n    this.elementRef.nativeElement.disabled = isDisabled;\n  }\n\n  ngOnDestroy(): void {\n    if (this.statusChanges) {\n      this.statusChanges.unsubscribe();\n    }\n  }\n\n  ngAfterViewInit(): void {\n    let ngControl;\n    try {\n      ngControl = this.injector.get<NgControl>(NgControl);\n    } catch {\n      /* No FormControl or ngModel binding */\n    }\n\n    if (!ngControl) {\n      return;\n    }\n\n    // Listen for changes in validity, disabled, or pending states\n    if (ngControl.statusChanges) {\n      this.statusChanges = ngControl.statusChanges.subscribe(() => setIonicClasses(this.elementRef));\n    }\n\n    /**\n     * TODO FW-2787: Remove this in favor of https://github.com/angular/angular/issues/10887\n     * whenever it is implemented.\n     */\n    const formControl = ngControl.control as any;\n    if (formControl) {\n      const methodsToPatch = ['markAsTouched', 'markAllAsTouched', 'markAsUntouched', 'markAsDirty', 'markAsPristine'];\n      methodsToPatch.forEach((method) => {\n        if (typeof formControl[method] !== 'undefined') {\n          const oldFn = formControl[method].bind(formControl);\n          formControl[method] = (...params: any[]) => {\n            oldFn(...params);\n            setIonicClasses(this.elementRef);\n          };\n        }\n      });\n    }\n  }\n}\n\nexport const setIonicClasses = (element: ElementRef): void => {\n  raf(() => {\n    const input = element.nativeElement as HTMLInputElement;\n    const hasValue = input.value != null && input.value.toString().length > 0;\n    const classes = getClasses(input);\n    setClasses(input, classes);\n    const item = input.closest('ion-item');\n    if (item) {\n      if (hasValue) {\n        setClasses(item, [...classes, 'item-has-value']);\n      } else {\n        setClasses(item, classes);\n      }\n    }\n  });\n};\n\nconst getClasses = (element: HTMLElement) => {\n  const classList = element.classList;\n  const classes: string[] = [];\n  for (let i = 0; i < classList.length; i++) {\n    const item = classList.item(i);\n    if (item !== null && startsWith(item, 'ng-')) {\n      classes.push(`ion-${item.substring(3)}`);\n    }\n  }\n  return classes;\n};\n\nconst setClasses = (element: HTMLElement, classes: string[]) => {\n  const classList = element.classList;\n  classList.remove('ion-valid', 'ion-invalid', 'ion-touched', 'ion-untouched', 'ion-dirty', 'ion-pristine');\n  classList.add(...classes);\n};\n\nconst startsWith = (input: string, search: string): boolean => {\n  return input.substring(0, search.length) === search;\n};\n"]}