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@taiga-ui/kit

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import { __decorate, __param } from "tslib"; import { DOCUMENT } from '@angular/common'; import { Directive, ElementRef, Inject, NgZone, Renderer2, ViewContainerRef, } from '@angular/core'; import { ANIMATION_FRAME, CSS } from '@ng-web-apis/common'; import { CHAR_ELLIPSIS, TuiDestroyService, tuiZonefree } from '@taiga-ui/cdk'; import { setRangeOffset } from '@taiga-ui/kit/utils/dom'; import { Observable } from 'rxjs'; import { map, takeUntil } from 'rxjs/operators'; import { TuiLineClampComponent } from './line-clamp.component'; const HIDDEN_LEFT = -200; // @dynamic let TuiLineClampDirective = class TuiLineClampDirective { constructor(component, viewContainerRef, documentRef, renderer, ngZone, { nativeElement }, destroy$, animationFrame$, /** * TODO: remove "any" in new TS version; https://github.com/ng-web-apis/common/pull/6 */ cssRef) { if (cssRef.supports('-webkit-line-clamp', '1') || !(nativeElement.parentElement instanceof HTMLElement)) { return; } const range = documentRef.createRange(); const ellipsis = renderer.createElement('div'); const { parentElement } = nativeElement; const { style } = ellipsis; style.position = 'absolute'; style.bottom = '0'; style.left = `${HIDDEN_LEFT}px`; ellipsis.textContent = CHAR_ELLIPSIS; viewContainerRef.element.nativeElement.appendChild(ellipsis); animationFrame$ .pipe(map(() => { // 4px buffer for IE/Edge incorrectly rounding scrollHeight if (component.oneLine || nativeElement.scrollHeight - parentElement.clientHeight < 4) { return HIDDEN_LEFT; } let result = 0; const length = nativeElement.textContent ? nativeElement.textContent.length : 0; for (let char = 0; char < length - 2; char++) { setRangeOffset(range, nativeElement, char, 'setStart'); setRangeOffset(range, nativeElement, char + 1, 'setEnd'); const rangeRect = range.getBoundingClientRect(); const clientRect = parentElement.getBoundingClientRect(); if (Math.round(rangeRect.top - clientRect.bottom) >= 0) { break; } result = rangeRect.right - clientRect.left; } return result; }), tuiZonefree(ngZone), takeUntil(destroy$)) .subscribe(left => { style.left = `${left}px`; }); } }; TuiLineClampDirective.ctorParameters = () => [ { type: TuiLineClampComponent, decorators: [{ type: Inject, args: [TuiLineClampComponent,] }] }, { type: ViewContainerRef, decorators: [{ type: Inject, args: [ViewContainerRef,] }] }, { type: Document, decorators: [{ type: Inject, args: [DOCUMENT,] }] }, { type: Renderer2, decorators: [{ type: Inject, args: [Renderer2,] }] }, { type: NgZone, decorators: [{ type: Inject, args: [NgZone,] }] }, { type: ElementRef, decorators: [{ type: Inject, args: [ElementRef,] }] }, { type: TuiDestroyService, decorators: [{ type: Inject, args: [TuiDestroyService,] }] }, { type: Observable, decorators: [{ type: Inject, args: [ANIMATION_FRAME,] }] }, { type: undefined, decorators: [{ type: Inject, args: [CSS,] }] } ]; TuiLineClampDirective = __decorate([ Directive({ selector: '[lineClamp]', providers: [TuiDestroyService], }), __param(0, Inject(TuiLineClampComponent)), __param(1, Inject(ViewContainerRef)), __param(2, Inject(DOCUMENT)), __param(3, Inject(Renderer2)), __param(4, Inject(NgZone)), __param(5, Inject(ElementRef)), __param(6, Inject(TuiDestroyService)), __param(7, Inject(ANIMATION_FRAME)), __param(8, Inject(CSS)) ], TuiLineClampDirective); 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https://github.com/ng-web-apis/common/pull/6\n         */\n        @Inject(CSS) cssRef: any,\n    ) {\n        if (\n            cssRef.supports('-webkit-line-clamp', '1') ||\n            !(nativeElement.parentElement instanceof HTMLElement)\n        ) {\n            return;\n        }\n\n        const range = documentRef.createRange();\n        const ellipsis: HTMLElement = renderer.createElement('div');\n        const {parentElement} = nativeElement;\n        const {style} = ellipsis;\n\n        style.position = 'absolute';\n        style.bottom = '0';\n        style.left = `${HIDDEN_LEFT}px`;\n        ellipsis.textContent = CHAR_ELLIPSIS;\n\n        viewContainerRef.element.nativeElement.appendChild(ellipsis);\n\n        animationFrame$\n            .pipe(\n                map(() => {\n                    // 4px buffer for IE/Edge incorrectly rounding scrollHeight\n                    if (\n                        component.oneLine ||\n                        nativeElement.scrollHeight - parentElement.clientHeight < 4\n                    ) {\n                        return HIDDEN_LEFT;\n                    }\n\n                    let result = 0;\n                    const length = nativeElement.textContent\n                        ? nativeElement.textContent.length\n                        : 0;\n\n                    for (let char = 0; char < length - 2; char++) {\n                        setRangeOffset(range, nativeElement, char, 'setStart');\n                        setRangeOffset(range, nativeElement, char + 1, 'setEnd');\n\n                        const rangeRect = range.getBoundingClientRect();\n                        const clientRect = parentElement.getBoundingClientRect();\n\n                        if (Math.round(rangeRect.top - clientRect.bottom) >= 0) {\n                            break;\n                        }\n\n                        result = rangeRect.right - clientRect.left;\n                    }\n\n                    return result;\n                }),\n                tuiZonefree(ngZone),\n                takeUntil(destroy$),\n            )\n            .subscribe(left => {\n                style.left = `${left}px`;\n            });\n    }\n}\n"]}