ngx-bootstrap
Version:
Angular Bootstrap
157 lines • 17.2 kB
JavaScript
import { ChangeDetectorRef, ContentChildren, Directive, forwardRef, HostBinding, HostListener, QueryList } from '@angular/core';
import { NG_VALUE_ACCESSOR } from '@angular/forms';
import { ButtonRadioDirective } from './button-radio.directive';
import * as i0 from "@angular/core";
export const RADIO_CONTROL_VALUE_ACCESSOR = {
provide: NG_VALUE_ACCESSOR,
useExisting: forwardRef(() => ButtonRadioGroupDirective),
multi: true
};
/**
* A group of radio buttons.
* A value of a selected button is bound to a variable specified via ngModel.
*/
export class ButtonRadioGroupDirective {
constructor(cdr) {
this.cdr = cdr;
this.onChange = Function.prototype;
this.onTouched = Function.prototype;
this.role = 'radiogroup';
this._disabled = false;
}
get value() {
return this._value;
}
set value(value) {
this._value = value;
this.onChange(value);
}
get disabled() {
return this._disabled;
}
get tabindex() {
if (this._disabled) {
return null;
}
else {
return 0;
}
}
writeValue(value) {
this._value = value;
this.cdr.markForCheck();
}
registerOnChange(fn) {
this.onChange = fn;
}
registerOnTouched(fn) {
this.onTouched = fn;
}
setDisabledState(disabled) {
if (this.radioButtons) {
this._disabled = disabled;
this.radioButtons.forEach(buttons => {
buttons.setDisabledState(disabled);
});
this.cdr.markForCheck();
}
}
onFocus() {
if (this._disabled) {
return;
}
const activeRadio = this.getActiveOrFocusedRadio();
if (activeRadio) {
activeRadio.focus();
return;
}
if (this.radioButtons) {
const firstEnabled = this.radioButtons.find(r => !r.disabled);
if (firstEnabled) {
firstEnabled.focus();
}
}
}
onBlur() {
if (this.onTouched) {
this.onTouched();
}
}
selectNext(event) {
this.selectInDirection('next');
event.preventDefault();
}
selectPrevious(event) {
this.selectInDirection('previous');
event.preventDefault();
}
selectInDirection(direction) {
if (this._disabled) {
return;
}
function nextIndex(currentIndex, buttonRadioDirectives) {
const step = direction === 'next' ? 1 : -1;
let calcIndex = (currentIndex + step) % buttonRadioDirectives.length;
if (calcIndex < 0) {
calcIndex = buttonRadioDirectives.length - 1;
}
return calcIndex;
}
const activeRadio = this.getActiveOrFocusedRadio();
if (activeRadio && this.radioButtons) {
const buttonRadioDirectives = this.radioButtons.toArray();
const currentActiveIndex = buttonRadioDirectives.indexOf(activeRadio);
for (let i = nextIndex(currentActiveIndex, buttonRadioDirectives); i !== currentActiveIndex; i = nextIndex(i, buttonRadioDirectives)) {
if (buttonRadioDirectives[i].canToggle()) {
buttonRadioDirectives[i].toggleIfAllowed();
buttonRadioDirectives[i].focus();
break;
}
}
}
}
getActiveOrFocusedRadio() {
if (!this.radioButtons) {
return void 0;
}
return this.radioButtons.find(button => button.isActive)
|| this.radioButtons.find(button => button.hasFocus);
}
}
ButtonRadioGroupDirective.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "14.0.6", ngImport: i0, type: ButtonRadioGroupDirective, deps: [{ token: i0.ChangeDetectorRef }], target: i0.ɵɵFactoryTarget.Directive });
ButtonRadioGroupDirective.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "14.0.6", type: ButtonRadioGroupDirective, selector: "[btnRadioGroup]", host: { listeners: { "focus": "onFocus()", "blur": "onBlur()", "keydown.ArrowRight": "selectNext($event)", "keydown.ArrowDown": "selectNext($event)", "keydown.ArrowLeft": "selectPrevious($event)", "keydown.ArrowUp": "selectPrevious($event)" }, properties: { "attr.role": "this.role", "attr.tabindex": "this.tabindex" } }, providers: [RADIO_CONTROL_VALUE_ACCESSOR], queries: [{ propertyName: "radioButtons", predicate: i0.forwardRef(function () { return ButtonRadioDirective; }) }], ngImport: i0 });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "14.0.6", ngImport: i0, type: ButtonRadioGroupDirective, decorators: [{
type: Directive,
args: [{
selector: '[btnRadioGroup]',
providers: [RADIO_CONTROL_VALUE_ACCESSOR]
}]
}], ctorParameters: function () { return [{ type: i0.ChangeDetectorRef }]; }, propDecorators: { role: [{
type: HostBinding,
args: ['attr.role']
}], radioButtons: [{
type: ContentChildren,
args: [forwardRef(() => ButtonRadioDirective)]
}], tabindex: [{
type: HostBinding,
args: ['attr.tabindex']
}], onFocus: [{
type: HostListener,
args: ['focus']
}], onBlur: [{
type: HostListener,
args: ['blur']
}], selectNext: [{
type: HostListener,
args: ['keydown.ArrowRight', ['$event']]
}, {
type: HostListener,
args: ['keydown.ArrowDown', ['$event']]
}], selectPrevious: [{
type: HostListener,
args: ['keydown.ArrowLeft', ['$event']]
}, {
type: HostListener,
args: ['keydown.ArrowUp', ['$event']]
}] } });
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{\n  ChangeDetectorRef,\n  ContentChildren,\n  Directive,\n  forwardRef,\n  HostBinding,\n  HostListener,\n  Provider,\n  QueryList\n} from '@angular/core';\nimport { ControlValueAccessor, NG_VALUE_ACCESSOR } from '@angular/forms';\nimport { ButtonRadioDirective } from './button-radio.directive';\n\nexport const RADIO_CONTROL_VALUE_ACCESSOR: Provider = {\n  provide: NG_VALUE_ACCESSOR,\n  useExisting: forwardRef(() => ButtonRadioGroupDirective),\n  multi: true\n};\n\n/**\n * A group of radio buttons.\n * A value of a selected button is bound to a variable specified via ngModel.\n */\n@Directive({\n  selector: '[btnRadioGroup]',\n  providers: [RADIO_CONTROL_VALUE_ACCESSOR]\n})\nexport class ButtonRadioGroupDirective implements ControlValueAccessor {\n  onChange = Function.prototype;\n  onTouched = Function.prototype;\n\n  @HostBinding('attr.role') readonly role: string = 'radiogroup';\n\n  @ContentChildren(forwardRef(() => ButtonRadioDirective))\n  radioButtons?: QueryList<ButtonRadioDirective>;\n\n  constructor(private cdr: ChangeDetectorRef) {\n  }\n\n  private _value?: string;\n\n  get value() {\n    return this._value;\n  }\n\n  set value(value: string | undefined) {\n    this._value = value;\n    this.onChange(value);\n  }\n\n  private _disabled = false;\n\n  get disabled(): boolean {\n    return this._disabled;\n  }\n\n  @HostBinding('attr.tabindex')\n  get tabindex(): null | number {\n    if (this._disabled) {\n      return null;\n    } else {\n      return 0;\n    }\n  }\n\n  writeValue(value?: string): void {\n    this._value = value;\n    this.cdr.markForCheck();\n  }\n\n  registerOnChange(fn: () => void): void {\n    this.onChange = fn;\n  }\n\n  registerOnTouched(fn: () => void): void {\n    this.onTouched = fn;\n  }\n\n  setDisabledState(disabled: boolean): void {\n    if (this.radioButtons) {\n      this._disabled = disabled;\n      this.radioButtons.forEach(buttons => {\n        buttons.setDisabledState(disabled);\n      });\n      this.cdr.markForCheck();\n    }\n  }\n\n  @HostListener('focus')\n  onFocus() {\n    if (this._disabled) {\n      return;\n    }\n    const activeRadio = this.getActiveOrFocusedRadio();\n    if (activeRadio) {\n      activeRadio.focus();\n      return;\n    }\n\n    if (this.radioButtons) {\n      const firstEnabled = this.radioButtons.find(r => !r.disabled);\n      if (firstEnabled) {\n        firstEnabled.focus();\n      }\n    }\n  }\n\n  @HostListener('blur')\n  onBlur() {\n    if (this.onTouched) {\n      this.onTouched();\n    }\n  }\n\n  @HostListener('keydown.ArrowRight', ['$event'])\n  @HostListener('keydown.ArrowDown', ['$event'])\n  selectNext(event: KeyboardEvent) {\n    this.selectInDirection('next');\n    event.preventDefault();\n  }\n\n  @HostListener('keydown.ArrowLeft', ['$event'])\n  @HostListener('keydown.ArrowUp', ['$event'])\n  selectPrevious(event: KeyboardEvent) {\n    this.selectInDirection('previous');\n    event.preventDefault();\n  }\n\n  private selectInDirection(direction: 'next' | 'previous') {\n    if (this._disabled) {\n      return;\n    }\n\n    function nextIndex(currentIndex: number, buttonRadioDirectives: ButtonRadioDirective[]) {\n      const step = direction === 'next' ? 1 : -1;\n      let calcIndex = (currentIndex + step) % buttonRadioDirectives.length;\n      if (calcIndex < 0) {\n        calcIndex = buttonRadioDirectives.length - 1;\n      }\n\n      return calcIndex;\n    }\n\n    const activeRadio = this.getActiveOrFocusedRadio();\n\n    if (activeRadio && this.radioButtons) {\n      const buttonRadioDirectives = this.radioButtons.toArray();\n      const currentActiveIndex = buttonRadioDirectives.indexOf(activeRadio);\n      for (\n        let i = nextIndex(currentActiveIndex, buttonRadioDirectives);\n        i !== currentActiveIndex;\n        i = nextIndex(i, buttonRadioDirectives)\n      ) {\n        if (buttonRadioDirectives[i].canToggle()) {\n          buttonRadioDirectives[i].toggleIfAllowed();\n          buttonRadioDirectives[i].focus();\n          break;\n        }\n      }\n    }\n  }\n\n  private getActiveOrFocusedRadio(): ButtonRadioDirective | undefined {\n    if (!this.radioButtons) {\n      return void 0;\n    }\n\n    return this.radioButtons.find(button => button.isActive)\n      || this.radioButtons.find(button => button.hasFocus);\n  }\n}\n"]}