@ng-bootstrap/ng-bootstrap
Version:
Angular powered Bootstrap
226 lines • 25.8 kB
JavaScript
import { ChangeDetectionStrategy, Component, ContentChild, EventEmitter, forwardRef, Input, Output, TemplateRef, ViewEncapsulation, } from '@angular/core';
import { getValueInRange } from '../util/util';
import { Key } from '../util/key';
import { NG_VALUE_ACCESSOR } from '@angular/forms';
import { NgFor, NgTemplateOutlet } from '@angular/common';
import * as i0 from "@angular/core";
import * as i1 from "./rating-config";
/**
* A directive that helps visualising and interacting with a star rating bar.
*/
class NgbRating {
/**
* Allows to provide a function to set a custom aria-valuetext
*
* @since 14.1.0
*/
ariaValueText(current, max) {
return `${current} out of ${max}`;
}
constructor(config, _changeDetectorRef) {
this._changeDetectorRef = _changeDetectorRef;
this.contexts = [];
this.disabled = false;
/**
* An event emitted when the user is hovering over a given rating.
*
* Event payload equals to the rating being hovered over.
*/
this.hover = new EventEmitter();
/**
* An event emitted when the user stops hovering over a given rating.
*
* Event payload equals to the rating of the last item being hovered over.
*/
this.leave = new EventEmitter();
/**
* An event emitted when the rating is changed.
*
* Event payload equals to the newly selected rating.
*/
this.rateChange = new EventEmitter(true);
this.onChange = (_) => { };
this.onTouched = () => { };
this.max = config.max;
this.readonly = config.readonly;
this.tabindex = config.tabindex;
}
isInteractive() {
return !this.readonly && !this.disabled;
}
enter(value) {
if (this.isInteractive()) {
this._updateState(value);
}
this.hover.emit(value);
}
handleBlur() {
this.onTouched();
}
handleClick(value) {
if (this.isInteractive()) {
this.update(this.resettable && this.rate === value ? 0 : value);
}
}
handleKeyDown(event) {
/* eslint-disable-next-line deprecation/deprecation */
switch (event.which) {
case Key.ArrowDown:
case Key.ArrowLeft:
this.update(this.rate - 1);
break;
case Key.ArrowUp:
case Key.ArrowRight:
this.update(this.rate + 1);
break;
case Key.Home:
this.update(0);
break;
case Key.End:
this.update(this.max);
break;
default:
return;
}
// note 'return' in default case
event.preventDefault();
}
ngOnChanges(changes) {
if (changes['rate']) {
this.update(this.rate);
}
if (changes['max']) {
this._updateMax();
}
}
ngOnInit() {
this._setupContexts();
this._updateState(this.rate);
}
registerOnChange(fn) {
this.onChange = fn;
}
registerOnTouched(fn) {
this.onTouched = fn;
}
reset() {
this.leave.emit(this.nextRate);
this._updateState(this.rate);
}
setDisabledState(isDisabled) {
this.disabled = isDisabled;
}
update(value, internalChange = true) {
const newRate = getValueInRange(value, this.max, 0);
if (this.isInteractive() && this.rate !== newRate) {
this.rate = newRate;
this.rateChange.emit(this.rate);
}
if (internalChange) {
this.onChange(this.rate);
this.onTouched();
}
this._updateState(this.rate);
}
writeValue(value) {
this.update(value, false);
this._changeDetectorRef.markForCheck();
}
_updateState(nextValue) {
this.nextRate = nextValue;
this.contexts.forEach((context, index) => (context.fill = Math.round(getValueInRange(nextValue - index, 1, 0) * 100)));
}
_updateMax() {
if (this.max > 0) {
this._setupContexts();
this.update(this.rate);
}
}
_setupContexts() {
this.contexts = Array.from({ length: this.max }, (v, k) => ({ fill: 0, index: k }));
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.0.6", ngImport: i0, type: NgbRating, deps: [{ token: i1.NgbRatingConfig }, { token: i0.ChangeDetectorRef }], target: i0.ɵɵFactoryTarget.Component }); }
static { this.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "14.0.0", version: "16.0.6", type: NgbRating, isStandalone: true, selector: "ngb-rating", inputs: { max: "max", rate: "rate", readonly: "readonly", resettable: "resettable", starTemplate: "starTemplate", tabindex: "tabindex", ariaValueText: "ariaValueText" }, outputs: { hover: "hover", leave: "leave", rateChange: "rateChange" }, host: { attributes: { "role": "slider", "aria-valuemin": "0" }, listeners: { "blur": "handleBlur()", "keydown": "handleKeyDown($event)", "mouseleave": "reset()" }, properties: { "tabindex": "disabled ? -1 : tabindex", "attr.aria-valuemax": "max", "attr.aria-valuenow": "nextRate", "attr.aria-valuetext": "ariaValueText(nextRate, max)", "attr.aria-disabled": "readonly ? true : null" }, classAttribute: "d-inline-flex" }, providers: [{ provide: NG_VALUE_ACCESSOR, useExisting: forwardRef(() => NgbRating), multi: true }], queries: [{ propertyName: "starTemplateFromContent", first: true, predicate: TemplateRef, descendants: true }], usesOnChanges: true, ngImport: i0, template: `
<ng-template #t let-fill="fill">{{ fill === 100 ? '★' : '☆' }}</ng-template>
<ng-template ngFor [ngForOf]="contexts" let-index="index">
<span class="visually-hidden">({{ index < nextRate ? '*' : ' ' }})</span>
<span
(mouseenter)="enter(index + 1)"
(click)="handleClick(index + 1)"
[style.cursor]="isInteractive() ? 'pointer' : 'default'"
>
<ng-template
[ngTemplateOutlet]="starTemplate || starTemplateFromContent || t"
[ngTemplateOutletContext]="contexts[index]"
>
</ng-template>
</span>
</ng-template>
`, isInline: true, dependencies: [{ kind: "directive", type: NgFor, selector: "[ngFor][ngForOf]", inputs: ["ngForOf", "ngForTrackBy", "ngForTemplate"] }, { kind: "directive", type: NgTemplateOutlet, selector: "[ngTemplateOutlet]", inputs: ["ngTemplateOutletContext", "ngTemplateOutlet", "ngTemplateOutletInjector"] }], changeDetection: i0.ChangeDetectionStrategy.OnPush, encapsulation: i0.ViewEncapsulation.None }); }
}
export { NgbRating };
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.0.6", ngImport: i0, type: NgbRating, decorators: [{
type: Component,
args: [{
selector: 'ngb-rating',
standalone: true,
imports: [NgFor, NgTemplateOutlet],
changeDetection: ChangeDetectionStrategy.OnPush,
encapsulation: ViewEncapsulation.None,
host: {
class: 'd-inline-flex',
'[tabindex]': 'disabled ? -1 : tabindex',
role: 'slider',
'aria-valuemin': '0',
'[attr.aria-valuemax]': 'max',
'[attr.aria-valuenow]': 'nextRate',
'[attr.aria-valuetext]': 'ariaValueText(nextRate, max)',
'[attr.aria-disabled]': 'readonly ? true : null',
'(blur)': 'handleBlur()',
'(keydown)': 'handleKeyDown($event)',
'(mouseleave)': 'reset()',
},
template: `
<ng-template #t let-fill="fill">{{ fill === 100 ? '★' : '☆' }}</ng-template>
<ng-template ngFor [ngForOf]="contexts" let-index="index">
<span class="visually-hidden">({{ index < nextRate ? '*' : ' ' }})</span>
<span
(mouseenter)="enter(index + 1)"
(click)="handleClick(index + 1)"
[style.cursor]="isInteractive() ? 'pointer' : 'default'"
>
<ng-template
[ngTemplateOutlet]="starTemplate || starTemplateFromContent || t"
[ngTemplateOutletContext]="contexts[index]"
>
</ng-template>
</span>
</ng-template>
`,
providers: [{ provide: NG_VALUE_ACCESSOR, useExisting: forwardRef(() => NgbRating), multi: true }],
}]
}], ctorParameters: function () { return [{ type: i1.NgbRatingConfig }, { type: i0.ChangeDetectorRef }]; }, propDecorators: { max: [{
type: Input
}], rate: [{
type: Input
}], readonly: [{
type: Input
}], resettable: [{
type: Input
}], starTemplate: [{
type: Input
}], starTemplateFromContent: [{
type: ContentChild,
args: [TemplateRef, { static: false }]
}], tabindex: [{
type: Input
}], ariaValueText: [{
type: Input
}], hover: [{
type: Output
}], leave: [{
type: Output
}], rateChange: [{
type: Output
}] } });
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{\n\tChangeDetectionStrategy,\n\tChangeDetectorRef,\n\tComponent,\n\tContentChild,\n\tEventEmitter,\n\tforwardRef,\n\tInput,\n\tOnChanges,\n\tOnInit,\n\tOutput,\n\tSimpleChanges,\n\tTemplateRef,\n\tViewEncapsulation,\n} from '@angular/core';\nimport { NgbRatingConfig } from './rating-config';\nimport { getValueInRange } from '../util/util';\nimport { Key } from '../util/key';\nimport { ControlValueAccessor, NG_VALUE_ACCESSOR } from '@angular/forms';\nimport { NgFor, NgTemplateOutlet } from '@angular/common';\n\n/**\n * The context for the custom star display template defined in the `starTemplate`.\n */\nexport interface StarTemplateContext {\n\t/**\n\t * The star fill percentage, an integer in the `[0, 100]` range.\n\t */\n\tfill: number;\n\n\t/**\n\t * Index of the star, starts with `0`.\n\t */\n\tindex: number;\n}\n\n/**\n * A directive that helps visualising and interacting with a star rating bar.\n */\n@Component({\n\tselector: 'ngb-rating',\n\tstandalone: true,\n\timports: [NgFor, NgTemplateOutlet],\n\tchangeDetection: ChangeDetectionStrategy.OnPush,\n\tencapsulation: ViewEncapsulation.None,\n\thost: {\n\t\tclass: 'd-inline-flex',\n\t\t'[tabindex]': 'disabled ? -1 : tabindex',\n\t\trole: 'slider',\n\t\t'aria-valuemin': '0',\n\t\t'[attr.aria-valuemax]': 'max',\n\t\t'[attr.aria-valuenow]': 'nextRate',\n\t\t'[attr.aria-valuetext]': 'ariaValueText(nextRate, max)',\n\t\t'[attr.aria-disabled]': 'readonly ? true : null',\n\t\t'(blur)': 'handleBlur()',\n\t\t'(keydown)': 'handleKeyDown($event)',\n\t\t'(mouseleave)': 'reset()',\n\t},\n\ttemplate: `\n\t\t<ng-template #t let-fill=\"fill\">{{ fill === 100 ? '&#9733;' : '&#9734;' }}</ng-template>\n\t\t<ng-template ngFor [ngForOf]=\"contexts\" let-index=\"index\">\n\t\t\t<span class=\"visually-hidden\">({{ index < nextRate ? '*' : ' ' }})</span>\n\t\t\t<span\n\t\t\t\t(mouseenter)=\"enter(index + 1)\"\n\t\t\t\t(click)=\"handleClick(index + 1)\"\n\t\t\t\t[style.cursor]=\"isInteractive() ? 'pointer' : 'default'\"\n\t\t\t>\n\t\t\t\t<ng-template\n\t\t\t\t\t[ngTemplateOutlet]=\"starTemplate || starTemplateFromContent || t\"\n\t\t\t\t\t[ngTemplateOutletContext]=\"contexts[index]\"\n\t\t\t\t>\n\t\t\t\t</ng-template>\n\t\t\t</span>\n\t\t</ng-template>\n\t`,\n\tproviders: [{ provide: NG_VALUE_ACCESSOR, useExisting: forwardRef(() => NgbRating), multi: true }],\n})\nexport class NgbRating implements ControlValueAccessor, OnInit, OnChanges {\n\tcontexts: StarTemplateContext[] = [];\n\tdisabled = false;\n\tnextRate: number;\n\n\t/**\n\t * The maximal rating that can be given.\n\t */\n\t@Input() max: number;\n\n\t/**\n\t * The current rating. Could be a decimal value like `3.75`.\n\t */\n\t@Input() rate: number;\n\n\t/**\n\t * If `true`, the rating can't be changed.\n\t */\n\t@Input() readonly: boolean;\n\n\t/**\n\t * If `true`, the rating can be reset to `0` by mouse clicking currently set rating.\n\t */\n\t@Input() resettable: boolean;\n\n\t/**\n\t * The template to override the way each star is displayed.\n\t *\n\t * Alternatively put an `<ng-template>` as the only child of your `<ngb-rating>` element\n\t */\n\t@Input() starTemplate: TemplateRef<StarTemplateContext>;\n\t@ContentChild(TemplateRef, { static: false }) starTemplateFromContent: TemplateRef<StarTemplateContext>;\n\n\t/**\n\t * Allows setting a custom rating tabindex.\n\t * If the component is disabled, `tabindex` will still be set to `-1`.\n\t *\n\t * @since 13.1.0\n\t */\n\t@Input() tabindex: number | string;\n\n\t/**\n\t * Allows to provide a function to set a custom aria-valuetext\n\t *\n\t * @since 14.1.0\n\t */\n\t@Input() ariaValueText(current: number, max: number) {\n\t\treturn `${current} out of ${max}`;\n\t}\n\n\t/**\n\t * An event emitted when the user is hovering over a given rating.\n\t *\n\t * Event payload equals to the rating being hovered over.\n\t */\n\t@Output() hover = new EventEmitter<number>();\n\n\t/**\n\t * An event emitted when the user stops hovering over a given rating.\n\t *\n\t * Event payload equals to the rating of the last item being hovered over.\n\t */\n\t@Output() leave = new EventEmitter<number>();\n\n\t/**\n\t * An event emitted when the rating is changed.\n\t *\n\t * Event payload equals to the newly selected rating.\n\t */\n\t@Output() rateChange = new EventEmitter<number>(true);\n\n\tonChange = (_: any) => {};\n\tonTouched = () => {};\n\n\tconstructor(config: NgbRatingConfig, private _changeDetectorRef: ChangeDetectorRef) {\n\t\tthis.max = config.max;\n\t\tthis.readonly = config.readonly;\n\t\tthis.tabindex = config.tabindex;\n\t}\n\n\tisInteractive(): boolean {\n\t\treturn !this.readonly && !this.disabled;\n\t}\n\n\tenter(value: number): void {\n\t\tif (this.isInteractive()) {\n\t\t\tthis._updateState(value);\n\t\t}\n\t\tthis.hover.emit(value);\n\t}\n\n\thandleBlur() {\n\t\tthis.onTouched();\n\t}\n\n\thandleClick(value: number) {\n\t\tif (this.isInteractive()) {\n\t\t\tthis.update(this.resettable && this.rate === value ? 0 : value);\n\t\t}\n\t}\n\n\thandleKeyDown(event: KeyboardEvent) {\n\t\t/* eslint-disable-next-line deprecation/deprecation */\n\t\tswitch (event.which) {\n\t\t\tcase Key.ArrowDown:\n\t\t\tcase Key.ArrowLeft:\n\t\t\t\tthis.update(this.rate - 1);\n\t\t\t\tbreak;\n\t\t\tcase Key.ArrowUp:\n\t\t\tcase Key.ArrowRight:\n\t\t\t\tthis.update(this.rate + 1);\n\t\t\t\tbreak;\n\t\t\tcase Key.Home:\n\t\t\t\tthis.update(0);\n\t\t\t\tbreak;\n\t\t\tcase Key.End:\n\t\t\t\tthis.update(this.max);\n\t\t\t\tbreak;\n\t\t\tdefault:\n\t\t\t\treturn;\n\t\t}\n\n\t\t// note 'return' in default case\n\t\tevent.preventDefault();\n\t}\n\n\tngOnChanges(changes: SimpleChanges) {\n\t\tif (changes['rate']) {\n\t\t\tthis.update(this.rate);\n\t\t}\n\t\tif (changes['max']) {\n\t\t\tthis._updateMax();\n\t\t}\n\t}\n\n\tngOnInit(): void {\n\t\tthis._setupContexts();\n\t\tthis._updateState(this.rate);\n\t}\n\n\tregisterOnChange(fn: (value: any) => any): void {\n\t\tthis.onChange = fn;\n\t}\n\n\tregisterOnTouched(fn: () => any): void {\n\t\tthis.onTouched = fn;\n\t}\n\n\treset(): void {\n\t\tthis.leave.emit(this.nextRate);\n\t\tthis._updateState(this.rate);\n\t}\n\n\tsetDisabledState(isDisabled: boolean) {\n\t\tthis.disabled = isDisabled;\n\t}\n\n\tupdate(value: number, internalChange = true): void {\n\t\tconst newRate = getValueInRange(value, this.max, 0);\n\t\tif (this.isInteractive() && this.rate !== newRate) {\n\t\t\tthis.rate = newRate;\n\t\t\tthis.rateChange.emit(this.rate);\n\t\t}\n\t\tif (internalChange) {\n\t\t\tthis.onChange(this.rate);\n\t\t\tthis.onTouched();\n\t\t}\n\t\tthis._updateState(this.rate);\n\t}\n\n\twriteValue(value) {\n\t\tthis.update(value, false);\n\t\tthis._changeDetectorRef.markForCheck();\n\t}\n\n\tprivate _updateState(nextValue: number) {\n\t\tthis.nextRate = nextValue;\n\t\tthis.contexts.forEach(\n\t\t\t(context, index) => (context.fill = Math.round(getValueInRange(nextValue - index, 1, 0) * 100)),\n\t\t);\n\t}\n\n\tprivate _updateMax() {\n\t\tif (this.max > 0) {\n\t\t\tthis._setupContexts();\n\t\t\tthis.update(this.rate);\n\t\t}\n\t}\n\n\tprivate _setupContexts() {\n\t\tthis.contexts = Array.from({ length: this.max }, (v, k) => ({ fill: 0, index: k }));\n\t}\n}\n"]}