@taiga-ui/kit
Version:
Taiga UI Angular main components kit
76 lines • 12.6 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 { map, 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);
this.activeThumbChange = new EventEmitter();
let activeThumb;
tuiTypedFromEvent(this.el, 'pointerdown', {
passive: true,
capture: true,
})
.pipe(tap(({ clientX, target, pointerId }) => {
activeThumb = this.detectActiveThumb(clientX, target);
this.range.slidersRefs
.get(activeThumb === 'left' ? 0 : 1)
?.nativeElement.setPointerCapture(pointerId);
this.activeThumbChange.emit(activeThumb);
if (this.range.focusable) {
this.el.focus();
}
}), switchMap((event) => tuiTypedFromEvent(this.doc, 'pointermove').pipe(startWith(event))), map(({ clientX }) => this.getFractionFromEvents(clientX ?? 0)), takeUntil(tuiTypedFromEvent(this.doc, 'pointerup', { passive: true })), 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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0 : 1)\n                        ?.nativeElement.setPointerCapture(pointerId);\n                    this.activeThumbChange.emit(activeThumb);\n\n                    if (this.range.focusable) {\n                        this.el.focus();\n                    }\n                }),\n                switchMap((event) =>\n                    tuiTypedFromEvent(this.doc, 'pointermove').pipe(startWith(event)),\n                ),\n                map(({clientX}) => this.getFractionFromEvents(clientX ?? 0)),\n                takeUntil(tuiTypedFromEvent(this.doc, 'pointerup', {passive: true})),\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"]}