@taiga-ui/kit/fesm2022/taiga-ui-kit-directives-highlight.mjs.map

Taiga UI Angular main components kit

{"version":3,"file":"taiga-ui-kit-directives-highlight.mjs","sources":["../../../projects/kit/directives/highlight/highlight.directive.ts","../../../projects/kit/directives/highlight/taiga-ui-kit-directives-highlight.ts"],"sourcesContent":["import {DOCUMENT} from '@angular/common';\nimport type {OnChanges} from '@angular/core';\nimport {Directive, inject, Input, Renderer2} from '@angular/core';\nimport {takeUntilDestroyed} from '@angular/core/rxjs-interop';\nimport {ResizeObserverService} from '@ng-web-apis/resize-observer';\nimport {svgNodeFilter} from '@taiga-ui/cdk/constants';\nimport {tuiCreateOptions} from '@taiga-ui/cdk/utils/di';\nimport {tuiInjectElement} from '@taiga-ui/cdk/utils/dom';\nimport {tuiPx} from '@taiga-ui/cdk/utils/miscellaneous';\n\nexport const [TUI_HIGHLIGHT_OPTIONS, tuiHighlightOptionsProvider] = tuiCreateOptions({\n    highlightColor: 'var(--tui-service-selection-background)',\n});\n\n@Directive({\n    standalone: true,\n    selector: '[tuiHighlight]',\n    providers: [ResizeObserverService],\n    host: {\n        '[style.position]': '\"relative\"',\n        '[style.zIndex]': '0',\n    },\n})\nexport class TuiHighlight implements OnChanges {\n    private readonly el = tuiInjectElement();\n    private readonly renderer = inject(Renderer2);\n    private readonly doc = inject(DOCUMENT);\n\n    private readonly highlight: HTMLElement = this.setUpHighlight();\n    private readonly treeWalker = this.doc.createTreeWalker(\n        this.el,\n        NodeFilter.SHOW_TEXT,\n        svgNodeFilter,\n    );\n\n    @Input()\n    public tuiHighlight = '';\n\n    @Input()\n    public tuiHighlightColor = inject(TUI_HIGHLIGHT_OPTIONS).highlightColor;\n\n    constructor() {\n        inject(ResizeObserverService, {self: true})\n            .pipe(takeUntilDestroyed())\n            .subscribe(() => this.updateStyles());\n    }\n\n    public ngOnChanges(): void {\n        this.updateStyles();\n    }\n\n    protected get match(): boolean {\n        return this.indexOf(this.el.textContent) !== -1;\n    }\n\n    private updateStyles(): void {\n        this.highlight.style.display = 'none';\n\n        if (!this.match) {\n            return;\n        }\n\n        this.treeWalker.currentNode = this.el;\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.doc.createRange();\n\n            range.setStart(this.treeWalker.currentNode, index);\n            range.setEnd(this.treeWalker.currentNode, index + this.tuiHighlight.length);\n\n            const hostRect = this.el.getBoundingClientRect();\n            const {left, top, width, height} = range.getBoundingClientRect();\n            const {style} = this.highlight;\n\n            style.background = this.tuiHighlightColor;\n            style.left = tuiPx(left - hostRect.left);\n            style.top = tuiPx(top - hostRect.top);\n            style.width = tuiPx(width);\n            style.height = tuiPx(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 = this.tuiHighlightColor;\n        style.zIndex = '-1';\n        style.position = 'absolute';\n        this.renderer.appendChild(this.el, highlight);\n\n        return highlight;\n    }\n}\n","/**\n * Generated bundle index. 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