@taiga-ui/kit
Version:
Taiga UI Angular main components kit
88 lines • 12.9 kB
JavaScript
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';
var HIDDEN_LEFT = -200;
// @dynamic
var TuiLineClampDirective = /** @class */ (function () {
function TuiLineClampDirective(component, viewContainerRef, documentRef, renderer, ngZone, _a, destroy$, animationFrame$,
/**
* TODO: remove "any" in new TS version; https://github.com/ng-web-apis/common/pull/6
*/
cssRef) {
var nativeElement = _a.nativeElement;
if (cssRef.supports('-webkit-line-clamp', '1') ||
!(nativeElement.parentElement instanceof HTMLElement)) {
return;
}
var range = documentRef.createRange();
var ellipsis = renderer.createElement('div');
var parentElement = nativeElement.parentElement;
var style = ellipsis.style;
style.position = 'absolute';
style.bottom = '0';
style.left = HIDDEN_LEFT + "px";
ellipsis.textContent = CHAR_ELLIPSIS;
viewContainerRef.element.nativeElement.appendChild(ellipsis);
animationFrame$
.pipe(map(function () {
// 4px buffer for IE/Edge incorrectly rounding scrollHeight
if (component.oneLine ||
nativeElement.scrollHeight - parentElement.clientHeight < 4) {
return HIDDEN_LEFT;
}
var result = 0;
var length = nativeElement.textContent
? nativeElement.textContent.length
: 0;
for (var char = 0; char < length - 2; char++) {
setRangeOffset(range, nativeElement, char, 'setStart');
setRangeOffset(range, nativeElement, char + 1, 'setEnd');
var rangeRect = range.getBoundingClientRect();
var clientRect = parentElement.getBoundingClientRect();
if (Math.round(rangeRect.top - clientRect.bottom) >= 0) {
break;
}
result = rangeRect.right - clientRect.left;
}
return result;
}), tuiZonefree(ngZone), takeUntil(destroy$))
.subscribe(function (left) {
style.left = left + "px";
});
}
TuiLineClampDirective.ctorParameters = function () { return [
{ type: TuiLineClampComponent, decorators: [{ type: Inject, args: [TuiLineClampComponent,] }] },
{ type: ViewContainerRef, decorators: [{ type: Inject, args: [ViewContainerRef,] }] },
{ type: Document, decorators: [{ type: Inject, args: [DOCUMENT,] }] },
{ type: Renderer2, decorators: [{ type: Inject, args: [Renderer2,] }] },
{ type: NgZone, decorators: [{ type: Inject, args: [NgZone,] }] },
{ type: ElementRef, decorators: [{ type: Inject, args: [ElementRef,] }] },
{ type: TuiDestroyService, decorators: [{ type: Inject, args: [TuiDestroyService,] }] },
{ type: Observable, decorators: [{ type: Inject, args: [ANIMATION_FRAME,] }] },
{ type: undefined, decorators: [{ type: Inject, args: [CSS,] }] }
]; };
TuiLineClampDirective = __decorate([
Directive({
selector: '[lineClamp]',
providers: [TuiDestroyService],
}),
__param(0, Inject(TuiLineClampComponent)),
__param(1, Inject(ViewContainerRef)),
__param(2, Inject(DOCUMENT)),
__param(3, Inject(Renderer2)),
__param(4, Inject(NgZone)),
__param(5, Inject(ElementRef)),
__param(6, Inject(TuiDestroyService)),
__param(7, Inject(ANIMATION_FRAME)),
__param(8, Inject(CSS))
], TuiLineClampDirective);
return TuiLineClampDirective;
}());
export { TuiLineClampDirective };
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https://github.com/ng-web-apis/common/pull/6\n         */\n        @Inject(CSS) cssRef: any,\n    ) {\n        if (\n            cssRef.supports('-webkit-line-clamp', '1') ||\n            !(nativeElement.parentElement instanceof HTMLElement)\n        ) {\n            return;\n        }\n\n        const range = documentRef.createRange();\n        const ellipsis: HTMLElement = renderer.createElement('div');\n        const {parentElement} = nativeElement;\n        const {style} = ellipsis;\n\n        style.position = 'absolute';\n        style.bottom = '0';\n        style.left = `${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"]}