@taiga-ui/cdk/fesm2022/taiga-ui-cdk-utils-focus.mjs.map

Base library for creating Angular components and applications using Taiga UI principles regarding of actual visual appearance

{"version":3,"file":"taiga-ui-cdk-utils-focus.mjs","sources":["../../../projects/cdk/utils/focus/get-native-focused.ts","../../../projects/cdk/utils/focus/blur-native-focused.ts","../../../projects/cdk/utils/focus/focused-in.ts","../../../projects/cdk/utils/focus/is-native-keyboard-focusable.ts","../../../projects/cdk/utils/focus/is-native-mouse-focusable.ts","../../../projects/cdk/utils/focus/get-closest-focusable.ts","../../../projects/cdk/utils/focus/is-native-focused.ts","../../../projects/cdk/utils/focus/is-native-focused-in.ts","../../../projects/cdk/utils/focus/move-focus.ts","../../../projects/cdk/utils/focus/taiga-ui-cdk-utils-focus.ts"],"sourcesContent":["/**\n * Returns current active element, including shadow dom\n *\n * @return element or null\n */\nexport function tuiGetNativeFocused({activeElement}: Document): Element | null {\n    if (!activeElement?.shadowRoot) {\n        return activeElement;\n    }\n\n    let element = activeElement.shadowRoot.activeElement;\n\n    while (element?.shadowRoot) {\n        element = element.shadowRoot.activeElement;\n    }\n\n    return element;\n}\n","import {tuiIsHTMLElement} from '@taiga-ui/cdk/utils/dom';\n\nimport {tuiGetNativeFocused} from './get-native-focused';\n\n/**\n * Finds and blurs current active element, including shadow DOM\n */\nexport function tuiBlurNativeFocused(doc: Document): void {\n    const activeElement = tuiGetNativeFocused(doc);\n\n    if (tuiIsHTMLElement(activeElement)) {\n        activeElement.blur();\n    }\n}\n","import {type Signal} from '@angular/core';\nimport {toSignal} from '@angular/core/rxjs-interop';\nimport {TUI_FALSE_HANDLER, TUI_TRUE_HANDLER} from '@taiga-ui/cdk/constants';\nimport {tuiUntrackedScheduler} from '@taiga-ui/cdk/observables';\nimport {fromEvent, map, merge, observeOn} from 'rxjs';\n\nexport function tuiFocusedIn(node: Node): Signal<boolean> {\n    return toSignal(\n        merge(\n            fromEvent(node, 'focus', {capture: true}).pipe(map(TUI_TRUE_HANDLER)),\n            fromEvent(node, 'blur', {capture: true}).pipe(map(TUI_FALSE_HANDLER)),\n        ).pipe(observeOn(tuiUntrackedScheduler)),\n        {initialValue: false},\n    );\n}\n","import {tuiIsHTMLElement} from '@taiga-ui/cdk/utils/dom';\n\n/**\n * Checks for signs that element can be focused with keyboard. tabIndex above 0 is ignored to\n * only target natural focus order. Not checking the possibility of an element to\n * be focused, for example element can have display: none applied to it or any other\n * circumstances could prevent actual focus.\n */\nexport function tuiIsNativeKeyboardFocusable(element: Element): boolean {\n    if (element.hasAttribute('disabled') || element.getAttribute('tabIndex') === '-1') {\n        return false;\n    }\n\n    if (\n        (tuiIsHTMLElement(element) && element.isContentEditable) ||\n        element.getAttribute('tabIndex') === '0'\n    ) {\n        return true;\n    }\n\n    switch (element.tagName) {\n        case 'A':\n        case 'LINK':\n            return element.hasAttribute('href');\n        case 'AUDIO':\n        case 'VIDEO':\n            return element.hasAttribute('controls');\n        case 'BUTTON':\n        case 'SELECT':\n        case 'TEXTAREA':\n            return true;\n        case 'INPUT':\n            return element.getAttribute('type') !== 'hidden';\n        default:\n            return false;\n    }\n}\n","import {tuiIsNativeKeyboardFocusable} from './is-native-keyboard-focusable';\n\nexport function tuiIsNativeMouseFocusable(element: Element): boolean {\n    return (\n        !element.hasAttribute('disabled') &&\n        (element.getAttribute('tabIndex') === '-1' ||\n            tuiIsNativeKeyboardFocusable(element))\n    );\n}\n","import {svgNodeFilter} from '@taiga-ui/cdk/constants';\nimport {tuiIsHTMLElement} from '@taiga-ui/cdk/utils/dom';\n\nimport {tuiIsNativeKeyboardFocusable} from './is-native-keyboard-focusable';\nimport {tuiIsNativeMouseFocusable} from './is-native-mouse-focusable';\n\nexport interface TuiGetClosestFocusableOptions {\n    /**\n     * @description:\n     * current HTML element\n     */\n    initial: Element;\n\n    /**\n     * @description:\n     * determine if only keyboard focus is of interest\n     */\n    keyboard?: boolean;\n\n    /**\n     * @description:\n     * should it look backwards instead (find item that will be focused with Shift + Tab)\n     */\n    previous?: boolean;\n\n    /**\n     * @description:\n     * top Node limiting the search area\n     */\n    root: Node;\n}\n\n/**\n * @description:\n * Finds the closest element that can be focused with a keyboard or mouse in theory\n */\nexport function tuiGetClosestFocusable({\n    initial,\n    root,\n    previous = false,\n    keyboard = true,\n}: TuiGetClosestFocusableOptions): HTMLElement | null {\n    if (!root.ownerDocument) {\n        return null;\n    }\n\n    const check = keyboard ? tuiIsNativeKeyboardFocusable : tuiIsNativeMouseFocusable;\n    const treeWalker = root.ownerDocument.createTreeWalker(\n        root,\n        NodeFilter.SHOW_ELEMENT,\n        svgNodeFilter,\n    );\n\n    treeWalker.currentNode = initial;\n\n    do {\n        if (tuiIsHTMLElement(treeWalker.currentNode)) {\n            initial = treeWalker.currentNode;\n        }\n\n        if (tuiIsHTMLElement(initial) && check(initial)) {\n            return initial;\n        }\n    } while (previous ? treeWalker.previousNode() : treeWalker.nextNode());\n\n    return null;\n}\n","import {tuiGetNativeFocused} from './get-native-focused';\n\n/**\n * Checks if element is focused.\n *\n * Could return true even after blur since element remains focused if you switch away from a browser tab.\n *\n * @param node or null (as a common return value of DOM nodes walking)\n * @return true if focused\n */\nexport function tuiIsNativeFocused(node?: Node | null): boolean {\n    return (\n        !!node?.ownerDocument &&\n        tuiGetNativeFocused(node.ownerDocument) === node &&\n        node.ownerDocument.hasFocus()\n    );\n}\n","import {tuiGetNativeFocused} from './get-native-focused';\n\n/**\n * Checks if focused element is within given element.\n *\n * @param node\n * @return true if focused node is contained within element\n */\nexport function tuiIsNativeFocusedIn(node?: Node | null): boolean {\n    const focused = node?.ownerDocument && tuiGetNativeFocused(node.ownerDocument);\n\n    return !!focused && node.contains(focused) && node.ownerDocument?.hasFocus();\n}\n","import {tuiIsNativeFocused} from './is-native-focused';\n\n/**\n * Utility method for moving focus in a list of elements\n *\n * @param currentIndex currently focused index\n * @param elements array of focusable elements\n * @param step a step to move focus by, typically -1 or 1\n */\nexport function tuiMoveFocus(\n    currentIndex: number,\n    elements: readonly HTMLElement[],\n    step: number,\n): void {\n    currentIndex += step;\n\n    while (currentIndex >= 0 && currentIndex < elements.length) {\n        elements[currentIndex]?.focus();\n\n        if (tuiIsNativeFocused(elements[currentIndex])) {\n            return;\n        }\n\n        currentIndex += step;\n    }\n}\n","/**\n * Generated bundle index. 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