@taiga-ui/kit
Version:
Taiga UI Angular main components kit
80 lines • 14.2 kB
JavaScript
import { DOCUMENT } from '@angular/common';
import { Directive, EventEmitter, inject, Output } from '@angular/core';
import { takeUntilDestroyed } from '@angular/core/rxjs-interop';
import { tuiTypedFromEvent } from '@taiga-ui/cdk/observables';
import { tuiInjectElement } from '@taiga-ui/cdk/utils/dom';
import { tuiClamp, tuiRound } from '@taiga-ui/cdk/utils/math';
import { TUI_FLOATING_PRECISION } from '@taiga-ui/kit/components/slider';
import { filter, map, merge, repeat, startWith, switchMap, takeUntil, tap } from 'rxjs';
import { TuiRange } from './range.component';
import * as i0 from "@angular/core";
class TuiRangeChange {
constructor() {
this.doc = inject(DOCUMENT);
this.el = tuiInjectElement();
this.range = inject(TuiRange);
/**
* TODO replace with pointer events (when all supported browsers can handle them).
* Don't forget to use setPointerCapture instead of listening all doc events
*/
this.pointerDown$ = tuiTypedFromEvent(this.el, 'pointerdown', {
passive: true,
capture: true,
});
this.pointerMove$ = merge(tuiTypedFromEvent(this.doc, 'touchmove').pipe(filter(({ touches }) => touches.length === 1), map(({ touches }) => touches[0]), filter((event) => !!event)), tuiTypedFromEvent(this.doc, 'mousemove'));
this.pointerUp$ = merge(tuiTypedFromEvent(this.doc, 'touchend', { passive: true }), tuiTypedFromEvent(this.doc, 'mouseup', { passive: true }));
this.activeThumbChange = new EventEmitter();
let activeThumb;
this.pointerDown$
.pipe(tap(({ clientX, target }) => {
activeThumb = this.detectActiveThumb(clientX, target);
this.activeThumbChange.emit(activeThumb);
if (this.range.focusable) {
this.el.focus();
}
}), switchMap((event) => this.pointerMove$.pipe(startWith(event))), map(({ clientX }) => this.getFractionFromEvents(clientX ?? 0)), takeUntil(this.pointerUp$), repeat(), takeUntilDestroyed())
.subscribe((fraction) => {
const value = this.range.toValue(fraction);
this.range.processValue(value, activeThumb === 'right');
});
}
getFractionFromEvents(clickClientX) {
const hostRect = this.el.getBoundingClientRect();
const value = clickClientX - hostRect.left;
const total = hostRect.width;
return tuiClamp(tuiRound(value / total, TUI_FLOATING_PRECISION), 0, 1);
}
detectActiveThumb(clientX, target) {
const [leftSliderRef, rightSliderRef] = this.range.slidersRefs;
switch (target) {
case leftSliderRef?.nativeElement:
return 'left';
case rightSliderRef?.nativeElement:
return 'right';
default:
return this.findNearestActiveThumb(clientX);
}
}
findNearestActiveThumb(clientX) {
const fraction = this.getFractionFromEvents(clientX);
const deltaLeft = fraction * 100 - this.range.left();
const deltaRight = fraction * 100 - 100 + this.range.right();
return Math.abs(deltaLeft) > Math.abs(deltaRight) ||
deltaRight > 0 ||
(this.range.left() === 0 && this.range.right() === 100)
? 'right'
: 'left';
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.2.12", ngImport: i0, type: TuiRangeChange, deps: [], target: i0.ɵɵFactoryTarget.Directive }); }
static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.2.12", type: TuiRangeChange, isStandalone: true, outputs: { activeThumbChange: "activeThumbChange" }, ngImport: i0 }); }
}
export { TuiRangeChange };
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.2.12", ngImport: i0, type: TuiRangeChange, decorators: [{
type: Directive,
args: [{
standalone: true,
}]
}], ctorParameters: function () { return []; }, propDecorators: { activeThumbChange: [{
type: Output
}] } });
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{DOCUMENT} from '@angular/common';\nimport {Directive, EventEmitter, inject, Output} from '@angular/core';\nimport {takeUntilDestroyed} from '@angular/core/rxjs-interop';\nimport {tuiTypedFromEvent} from '@taiga-ui/cdk/observables';\nimport {tuiInjectElement} from '@taiga-ui/cdk/utils/dom';\nimport {tuiClamp, tuiRound} from '@taiga-ui/cdk/utils/math';\nimport {TUI_FLOATING_PRECISION} from '@taiga-ui/kit/components/slider';\nimport {filter, map, merge, repeat, startWith, switchMap, takeUntil, tap} from 'rxjs';\n\nimport {TuiRange} from './range.component';\n\n@Directive({\n    standalone: true,\n})\nexport class TuiRangeChange {\n    private readonly doc = inject(DOCUMENT);\n    private readonly el = tuiInjectElement();\n    private readonly range = inject(TuiRange);\n\n    /**\n     * TODO replace with pointer events (when all supported browsers can handle them).\n     * Don't forget to use setPointerCapture instead of listening all doc events\n     */\n    private readonly pointerDown$ = tuiTypedFromEvent(this.el, 'pointerdown', {\n        passive: true,\n        capture: true,\n    });\n\n    private readonly pointerMove$ = merge(\n        tuiTypedFromEvent(this.doc, 'touchmove').pipe(\n            filter(({touches}) => touches.length === 1),\n            map(({touches}) => touches[0]),\n            filter((event): event is Touch => !!event),\n        ),\n        tuiTypedFromEvent(this.doc, 'mousemove'),\n    );\n\n    private readonly pointerUp$ = merge(\n        tuiTypedFromEvent(this.doc, 'touchend', {passive: true}),\n        tuiTypedFromEvent(this.doc, 'mouseup', {passive: true}),\n    );\n\n    @Output()\n    public readonly activeThumbChange = new EventEmitter<'left' | 'right'>();\n\n    constructor() {\n        let activeThumb: 'left' | 'right';\n\n        this.pointerDown$\n            .pipe(\n                tap(({clientX, target}) => {\n                    activeThumb = this.detectActiveThumb(clientX, target);\n                    this.activeThumbChange.emit(activeThumb);\n\n                    if (this.range.focusable) {\n                        this.el.focus();\n                    }\n                }),\n                switchMap((event) => this.pointerMove$.pipe(startWith(event))),\n                map(({clientX}) => this.getFractionFromEvents(clientX ?? 0)),\n                takeUntil(this.pointerUp$),\n                repeat(),\n                takeUntilDestroyed(),\n            )\n            .subscribe((fraction) => {\n                const value = this.range.toValue(fraction);\n\n                this.range.processValue(value, activeThumb === 'right');\n            });\n    }\n\n    private getFractionFromEvents(clickClientX: number): number {\n        const hostRect = this.el.getBoundingClientRect();\n        const value = clickClientX - hostRect.left;\n        const total = hostRect.width;\n\n        return tuiClamp(tuiRound(value / total, TUI_FLOATING_PRECISION), 0, 1);\n    }\n\n    private detectActiveThumb(\n        clientX: number,\n        target: EventTarget | null,\n    ): 'left' | 'right' {\n        const [leftSliderRef, rightSliderRef] = this.range.slidersRefs;\n\n        switch (target) {\n            case leftSliderRef?.nativeElement:\n                return 'left';\n            case rightSliderRef?.nativeElement:\n                return 'right';\n            default:\n                return this.findNearestActiveThumb(clientX);\n        }\n    }\n\n    private findNearestActiveThumb(clientX: number): 'left' | 'right' {\n        const fraction = this.getFractionFromEvents(clientX);\n        const deltaLeft = fraction * 100 - this.range.left();\n        const deltaRight = fraction * 100 - 100 + this.range.right();\n\n        return Math.abs(deltaLeft) > Math.abs(deltaRight) ||\n            deltaRight > 0 ||\n            (this.range.left() === 0 && this.range.right() === 100)\n            ? 'right'\n            : 'left';\n    }\n}\n"]}