@taiga-ui/kit
Version:
Taiga UI Angular main components kit
90 lines • 12.2 kB
JavaScript
import { __decorate, __param } from "tslib";
import { DOCUMENT } from '@angular/common';
import { Directive, ElementRef, Inject, Input, OnChanges, Renderer2 } from '@angular/core';
import { px, svgNodeFilter, tuiDefaultProp, TuiDestroyService, TuiResizeService, } from '@taiga-ui/cdk';
import { Observable } from 'rxjs';
// @dynamic
let TuiHighlightDirective = class TuiHighlightDirective {
constructor(documentRef, elementRef, renderer, resize$) {
this.documentRef = documentRef;
this.elementRef = elementRef;
this.renderer = renderer;
this.tuiHighlight = '';
this.highlight = this.setUpHighlight();
this.treeWalker = this.documentRef.createTreeWalker(this.elementRef.nativeElement, NodeFilter.SHOW_TEXT, svgNodeFilter, false);
resize$.subscribe(() => {
this.updateStyles();
});
}
get match() {
return this.indexOf(this.elementRef.nativeElement.textContent) !== -1;
}
ngOnChanges() {
this.updateStyles();
}
updateStyles() {
this.highlight.style.display = 'none';
if (!this.match) {
return;
}
this.treeWalker.currentNode = this.elementRef.nativeElement;
do {
const index = this.indexOf(this.treeWalker.currentNode.nodeValue);
if (index === -1) {
continue;
}
const range = this.documentRef.createRange();
range.setStart(this.treeWalker.currentNode, index);
range.setEnd(this.treeWalker.currentNode, index + this.tuiHighlight.length);
const hostRect = this.elementRef.nativeElement.getBoundingClientRect();
const { left, top, width, height } = range.getBoundingClientRect();
const { style } = this.highlight;
style.left = px(left - hostRect.left);
style.top = px(top - hostRect.top);
style.width = px(width);
style.height = px(height);
style.display = 'block';
return;
} while (this.treeWalker.nextNode());
}
indexOf(source) {
return !source || !this.tuiHighlight
? -1
: source.toLowerCase().indexOf(this.tuiHighlight.toLowerCase());
}
setUpHighlight() {
const highlight = this.renderer.createElement('div');
const { style } = highlight;
style.background = 'var(--tui-selection)';
style.zIndex = '-1';
style.position = 'absolute';
this.renderer.appendChild(this.elementRef.nativeElement, highlight);
return highlight;
}
};
TuiHighlightDirective.ctorParameters = () => [
{ type: Document, decorators: [{ type: Inject, args: [DOCUMENT,] }] },
{ type: ElementRef, decorators: [{ type: Inject, args: [ElementRef,] }] },
{ type: Renderer2, decorators: [{ type: Inject, args: [Renderer2,] }] },
{ type: Observable, decorators: [{ type: Inject, args: [TuiResizeService,] }] }
];
__decorate([
Input(),
tuiDefaultProp()
], TuiHighlightDirective.prototype, "tuiHighlight", void 0);
TuiHighlightDirective = __decorate([
Directive({
selector: '[tuiHighlight]',
host: {
'[style.position]': '"relative"',
'[style.zIndex]': '0',
},
providers: [TuiDestroyService, TuiResizeService],
}),
__param(0, Inject(DOCUMENT)),
__param(1, Inject(ElementRef)),
__param(2, Inject(Renderer2)),
__param(3, Inject(TuiResizeService))
], TuiHighlightDirective);
export { TuiHighlightDirective };
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{DOCUMENT} from '@angular/common';\nimport {Directive, ElementRef, Inject, Input, OnChanges, Renderer2} from '@angular/core';\nimport {\n    px,\n    svgNodeFilter,\n    tuiDefaultProp,\n    TuiDestroyService,\n    TuiResizeService,\n} from '@taiga-ui/cdk';\nimport {Observable} from 'rxjs';\n\n// @dynamic\n@Directive({\n    selector: '[tuiHighlight]',\n    host: {\n        '[style.position]': '\"relative\"',\n        '[style.zIndex]': '0',\n    },\n    providers: [TuiDestroyService, TuiResizeService],\n})\nexport class TuiHighlightDirective implements OnChanges {\n    @Input()\n    @tuiDefaultProp()\n    tuiHighlight = '';\n\n    private readonly highlight: HTMLElement = this.setUpHighlight();\n\n    private readonly treeWalker = this.documentRef.createTreeWalker(\n        this.elementRef.nativeElement,\n        NodeFilter.SHOW_TEXT,\n        svgNodeFilter,\n        false,\n    );\n\n    constructor(\n        @Inject(DOCUMENT) private readonly documentRef: Document,\n        @Inject(ElementRef) private readonly elementRef: ElementRef<HTMLElement>,\n        @Inject(Renderer2) private readonly renderer: Renderer2,\n        @Inject(TuiResizeService) resize$: Observable<unknown>,\n    ) {\n        resize$.subscribe(() => {\n            this.updateStyles();\n        });\n    }\n\n    get match(): boolean {\n        return this.indexOf(this.elementRef.nativeElement.textContent) !== -1;\n    }\n\n    ngOnChanges() {\n        this.updateStyles();\n    }\n\n    private updateStyles() {\n        this.highlight.style.display = 'none';\n\n        if (!this.match) {\n            return;\n        }\n\n        this.treeWalker.currentNode = this.elementRef.nativeElement;\n\n        do {\n            const index = this.indexOf(this.treeWalker.currentNode.nodeValue);\n\n            if (index === -1) {\n                continue;\n            }\n\n            const range = this.documentRef.createRange();\n\n            range.setStart(this.treeWalker.currentNode, index);\n            range.setEnd(this.treeWalker.currentNode, index + this.tuiHighlight.length);\n\n            const hostRect = this.elementRef.nativeElement.getBoundingClientRect();\n            const {left, top, width, height} = range.getBoundingClientRect();\n            const {style} = this.highlight;\n\n            style.left = px(left - hostRect.left);\n            style.top = px(top - hostRect.top);\n            style.width = px(width);\n            style.height = px(height);\n            style.display = 'block';\n\n            return;\n        } while (this.treeWalker.nextNode());\n    }\n\n    private indexOf(source: string | null): number {\n        return !source || !this.tuiHighlight\n            ? -1\n            : source.toLowerCase().indexOf(this.tuiHighlight.toLowerCase());\n    }\n\n    private setUpHighlight(): HTMLElement {\n        const highlight = this.renderer.createElement('div');\n        const {style} = highlight;\n\n        style.background = 'var(--tui-selection)';\n        style.zIndex = '-1';\n        style.position = 'absolute';\n        this.renderer.appendChild(this.elementRef.nativeElement, highlight);\n\n        return highlight;\n    }\n}\n"]}