@taiga-ui/core
Version:
Core library for creating Angular components and applications using Taiga UI
159 lines • 25.8 kB
JavaScript
import { DOCUMENT } from '@angular/common';
import { Directive, inject, Input, ViewContainerRef } from '@angular/core';
import { CHAR_NO_BREAK_SPACE, CHAR_ZERO_WIDTH_SPACE, EMPTY_CLIENT_RECT, TUI_TRUE_HANDLER, } from '@taiga-ui/cdk/constants';
import { TUI_RANGE } from '@taiga-ui/cdk/tokens';
import { tuiInjectElement, tuiIsElement, tuiIsTextfield, tuiIsTextNode, } from '@taiga-ui/cdk/utils/dom';
import { tuiGetNativeFocused } from '@taiga-ui/cdk/utils/focus';
import { tuiIsString, tuiPx } from '@taiga-ui/cdk/utils/miscellaneous';
import { tuiAsDriver, tuiAsRectAccessor, TuiDriver, } from '@taiga-ui/core/classes';
import { TUI_SELECTION_STREAM } from '@taiga-ui/core/tokens';
import { tuiGetWordRange } from '@taiga-ui/core/utils';
import { BehaviorSubject, combineLatest, distinctUntilChanged, filter, map } from 'rxjs';
import { TuiDropdownDirective } from './dropdown.directive';
import * as i0 from "@angular/core";
class TuiDropdownSelection extends TuiDriver {
constructor() {
super((subscriber) => this.stream$.subscribe(subscriber));
this.doc = inject(DOCUMENT);
this.vcr = inject(ViewContainerRef);
this.dropdown = inject(TuiDropdownDirective);
this.el = tuiInjectElement();
this.handler$ = new BehaviorSubject(TUI_TRUE_HANDLER);
this.stream$ = combineLatest([
this.handler$,
inject(TUI_SELECTION_STREAM).pipe(map(() => this.getRange()), filter((range) => this.isValid(range)), distinctUntilChanged((x, y) => x.startOffset === y.startOffset &&
x.endOffset === y.endOffset &&
x.commonAncestorContainer === y.commonAncestorContainer)),
]).pipe(map(([handler, range]) => {
const contained = this.el.contains(range.commonAncestorContainer);
this.range =
contained && tuiIsTextNode(range.commonAncestorContainer)
? range
: this.range;
return (contained && handler(this.range)) || this.inDropdown(range);
}));
this.range = inject(TUI_RANGE);
this.position = 'selection';
this.type = 'dropdown';
}
set tuiDropdownSelection(visible) {
if (!tuiIsString(visible)) {
this.handler$.next(visible);
}
}
getClientRect() {
switch (this.position) {
case 'tag': {
const { commonAncestorContainer } = this.range;
const element = tuiIsElement(commonAncestorContainer)
? commonAncestorContainer
: commonAncestorContainer.parentNode;
return element && tuiIsElement(element)
? element.getBoundingClientRect()
: EMPTY_CLIENT_RECT;
}
case 'word':
return tuiGetWordRange(this.range).getBoundingClientRect();
default:
return this.range.getBoundingClientRect();
}
}
ngOnDestroy() {
if (this.ghost) {
this.ghostHost.removeChild(this.ghost);
}
}
get ghostHost() {
return this.el.querySelector('tui-textfield .t-ghost') || this.el;
}
getRange() {
const active = tuiGetNativeFocused(this.doc);
const selection = this.doc.getSelection();
const range = active && tuiIsTextfield(active) && this.el.contains(active)
? this.veryVerySadInputFix(active)
: (selection?.rangeCount && selection.getRangeAt(0)) || this.range;
return range.cloneRange();
}
/**
* Check if given range is at least partially inside dropdown
*/
inDropdown(range) {
const { startContainer, endContainer } = range;
const inDropdown = this.boxContains(range.commonAncestorContainer);
const hostToDropdown = this.boxContains(endContainer) && this.el.contains(startContainer);
const dropdownToHost = this.boxContains(startContainer) && this.el.contains(endContainer);
return inDropdown || hostToDropdown || dropdownToHost;
}
/**
* Check if Node is inside dropdown
*/
boxContains(node) {
return !!this.dropdown.ref()?.location.nativeElement.contains(node);
}
/**
* Check if range is not inside tui-textfield's DOM elements
*/
isValid(range) {
return (!this.el.contains(range.commonAncestorContainer) ||
!this.el.closest('tui-textfield') ||
range.intersectsNode(this.ghost || this.el));
}
veryVerySadInputFix(element) {
const { ghost = this.initGhost(this.ghostHost) } = this;
const { top, left, width, height } = this.ghostHost.getBoundingClientRect();
const { selectionStart, selectionEnd, value } = element;
const range = this.doc.createRange();
const hostRect = this.ghostHost.getBoundingClientRect();
ghost.style.top = tuiPx(top - hostRect.top);
ghost.style.left = tuiPx(left - hostRect.left);
ghost.style.width = tuiPx(width);
ghost.style.height = tuiPx(height);
ghost.textContent = CHAR_ZERO_WIDTH_SPACE + value + CHAR_NO_BREAK_SPACE;
range.setStart(ghost.firstChild, selectionStart || 0);
range.setEnd(ghost.firstChild, selectionEnd || 0);
return range;
}
/**
* Create an invisible DIV styled exactly like input/textarea element inside directive
*/
initGhost(element) {
const ghost = this.doc.createElement('div');
const { font, letterSpacing, textTransform, padding, borderTop } = getComputedStyle(element);
ghost.style.position = 'absolute';
ghost.style.pointerEvents = 'none';
ghost.style.opacity = '0';
ghost.style.whiteSpace = 'pre-wrap';
ghost.style.boxSizing = 'border-box';
ghost.style.borderTop = borderTop;
ghost.style.font = font;
ghost.style.letterSpacing = letterSpacing;
ghost.style.textTransform = textTransform;
ghost.style.padding = padding;
this.ghostHost.appendChild(ghost);
this.ghost = ghost;
return ghost;
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.2.12", ngImport: i0, type: TuiDropdownSelection, deps: [], target: i0.ɵɵFactoryTarget.Directive }); }
static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.2.12", type: TuiDropdownSelection, isStandalone: true, selector: "[tuiDropdownSelection]", inputs: { position: ["tuiDropdownSelectionPosition", "position"], tuiDropdownSelection: "tuiDropdownSelection" }, providers: [
tuiAsDriver(TuiDropdownSelection),
tuiAsRectAccessor(TuiDropdownSelection),
], usesInheritance: true, ngImport: i0 }); }
}
export { TuiDropdownSelection };
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.2.12", ngImport: i0, type: TuiDropdownSelection, decorators: [{
type: Directive,
args: [{
standalone: true,
selector: '[tuiDropdownSelection]',
providers: [
tuiAsDriver(TuiDropdownSelection),
tuiAsRectAccessor(TuiDropdownSelection),
],
}]
}], ctorParameters: function () { return []; }, propDecorators: { position: [{
type: Input,
args: ['tuiDropdownSelectionPosition']
}], tuiDropdownSelection: [{
type: Input
}] } });
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{DOCUMENT} from '@angular/common';\nimport {Directive, inject, Input, type OnDestroy, ViewContainerRef} from '@angular/core';\nimport {\n    CHAR_NO_BREAK_SPACE,\n    CHAR_ZERO_WIDTH_SPACE,\n    EMPTY_CLIENT_RECT,\n    TUI_TRUE_HANDLER,\n} from '@taiga-ui/cdk/constants';\nimport {TUI_RANGE} from '@taiga-ui/cdk/tokens';\nimport {type TuiBooleanHandler} from '@taiga-ui/cdk/types';\nimport {\n    tuiInjectElement,\n    tuiIsElement,\n    tuiIsTextfield,\n    tuiIsTextNode,\n} from '@taiga-ui/cdk/utils/dom';\nimport {tuiGetNativeFocused} from '@taiga-ui/cdk/utils/focus';\nimport {tuiIsString, tuiPx} from '@taiga-ui/cdk/utils/miscellaneous';\nimport {\n    tuiAsDriver,\n    tuiAsRectAccessor,\n    TuiDriver,\n    type TuiRectAccessor,\n} from '@taiga-ui/core/classes';\nimport {TUI_SELECTION_STREAM} from '@taiga-ui/core/tokens';\nimport {tuiGetWordRange} from '@taiga-ui/core/utils';\nimport {BehaviorSubject, combineLatest, distinctUntilChanged, filter, map} from 'rxjs';\n\nimport {TuiDropdownDirective} from './dropdown.directive';\n\n@Directive({\n    standalone: true,\n    selector: '[tuiDropdownSelection]',\n    providers: [\n        tuiAsDriver(TuiDropdownSelection),\n        tuiAsRectAccessor(TuiDropdownSelection),\n    ],\n})\nexport class TuiDropdownSelection\n    extends TuiDriver\n    implements TuiRectAccessor, OnDestroy\n{\n    private ghost?: HTMLElement;\n\n    protected readonly doc = inject(DOCUMENT);\n    protected readonly vcr = inject(ViewContainerRef);\n    protected readonly dropdown = inject(TuiDropdownDirective);\n    protected readonly el = tuiInjectElement();\n    protected readonly handler$ = new BehaviorSubject<TuiBooleanHandler<Range>>(\n        TUI_TRUE_HANDLER,\n    );\n\n    protected readonly stream$ = combineLatest([\n        this.handler$,\n        inject(TUI_SELECTION_STREAM).pipe(\n            map(() => this.getRange()),\n            filter((range) => this.isValid(range)),\n            distinctUntilChanged(\n                (x, y) =>\n                    x.startOffset === y.startOffset &&\n                    x.endOffset === y.endOffset &&\n                    x.commonAncestorContainer === y.commonAncestorContainer,\n            ),\n        ),\n    ]).pipe(\n        map(([handler, range]) => {\n            const contained = this.el.contains(range.commonAncestorContainer);\n\n            this.range =\n                contained && tuiIsTextNode(range.commonAncestorContainer)\n                    ? range\n                    : this.range;\n\n            return (contained && handler(this.range)) || this.inDropdown(range);\n        }),\n    );\n\n    protected range = inject(TUI_RANGE);\n\n    @Input('tuiDropdownSelectionPosition')\n    public position: 'selection' | 'tag' | 'word' = 'selection';\n\n    public readonly type = 'dropdown';\n\n    constructor() {\n        super((subscriber) => this.stream$.subscribe(subscriber));\n    }\n\n    @Input()\n    public set tuiDropdownSelection(visible: TuiBooleanHandler<Range> | string) {\n        if (!tuiIsString(visible)) {\n            this.handler$.next(visible);\n        }\n    }\n\n    public getClientRect(): DOMRect {\n        switch (this.position) {\n            case 'tag': {\n                const {commonAncestorContainer} = this.range;\n                const element = tuiIsElement(commonAncestorContainer)\n                    ? commonAncestorContainer\n                    : commonAncestorContainer.parentNode;\n\n                return element && tuiIsElement(element)\n                    ? element.getBoundingClientRect()\n                    : EMPTY_CLIENT_RECT;\n            }\n            case 'word':\n                return tuiGetWordRange(this.range).getBoundingClientRect();\n            default:\n                return this.range.getBoundingClientRect();\n        }\n    }\n\n    public ngOnDestroy(): void {\n        if (this.ghost) {\n            this.ghostHost.removeChild(this.ghost);\n        }\n    }\n\n    private get ghostHost(): HTMLElement {\n        return this.el.querySelector('tui-textfield .t-ghost') || this.el;\n    }\n\n    private getRange(): Range {\n        const active = tuiGetNativeFocused(this.doc);\n        const selection = this.doc.getSelection();\n        const range =\n            active && tuiIsTextfield(active) && this.el.contains(active)\n                ? this.veryVerySadInputFix(active)\n                : (selection?.rangeCount && selection.getRangeAt(0)) || this.range;\n\n        return range.cloneRange();\n    }\n\n    /**\n     * Check if given range is at least partially inside dropdown\n     */\n    private inDropdown(range: Range): boolean {\n        const {startContainer, endContainer} = range;\n        const inDropdown = this.boxContains(range.commonAncestorContainer);\n        const hostToDropdown =\n            this.boxContains(endContainer) && this.el.contains(startContainer);\n        const dropdownToHost =\n            this.boxContains(startContainer) && this.el.contains(endContainer);\n\n        return inDropdown || hostToDropdown || dropdownToHost;\n    }\n\n    /**\n     * Check if Node is inside dropdown\n     */\n    private boxContains(node: Node): boolean {\n        return !!this.dropdown.ref()?.location.nativeElement.contains(node);\n    }\n\n    /**\n     * Check if range is not inside tui-textfield's DOM elements\n     */\n    private isValid(range: Range): boolean {\n        return (\n            !this.el.contains(range.commonAncestorContainer) ||\n            !this.el.closest('tui-textfield') ||\n            range.intersectsNode(this.ghost || this.el)\n        );\n    }\n\n    private veryVerySadInputFix(element: HTMLInputElement | HTMLTextAreaElement): Range {\n        const {ghost = this.initGhost(this.ghostHost)} = this;\n        const {top, left, width, height} = this.ghostHost.getBoundingClientRect();\n        const {selectionStart, selectionEnd, value} = element;\n        const range = this.doc.createRange();\n        const hostRect = this.ghostHost.getBoundingClientRect();\n\n        ghost.style.top = tuiPx(top - hostRect.top);\n        ghost.style.left = tuiPx(left - hostRect.left);\n        ghost.style.width = tuiPx(width);\n        ghost.style.height = tuiPx(height);\n        ghost.textContent = CHAR_ZERO_WIDTH_SPACE + value + CHAR_NO_BREAK_SPACE;\n\n        range.setStart(ghost.firstChild as Node, selectionStart || 0);\n        range.setEnd(ghost.firstChild as Node, selectionEnd || 0);\n\n        return range;\n    }\n\n    /**\n     * Create an invisible DIV styled exactly like input/textarea element inside directive\n     */\n    private initGhost(\n        element: HTMLElement | HTMLInputElement | HTMLTextAreaElement,\n    ): HTMLElement {\n        const ghost = this.doc.createElement('div');\n        const {font, letterSpacing, textTransform, padding, borderTop} =\n            getComputedStyle(element);\n\n        ghost.style.position = 'absolute';\n        ghost.style.pointerEvents = 'none';\n        ghost.style.opacity = '0';\n        ghost.style.whiteSpace = 'pre-wrap';\n        ghost.style.boxSizing = 'border-box';\n        ghost.style.borderTop = borderTop;\n        ghost.style.font = font;\n        ghost.style.letterSpacing = letterSpacing;\n        ghost.style.textTransform = textTransform;\n        ghost.style.padding = padding;\n\n        this.ghostHost.appendChild(ghost);\n        this.ghost = ghost;\n\n        return ghost;\n    }\n}\n"]}