Brunobkr/llama.cpp_AlgMor24_github

1import { focusable, isFocusable, isTabbable, tabbable } from "tabbable";2import { getDocument } from "svelte-toolbelt";3function getTabbableOptions() {4    return {5        getShadowRoot: true,6        displayCheck: 7        // JSDOM does not support the `tabbable` library. To solve this we can8        // check if `ResizeObserver` is a real function (not polyfilled), which9        // determines if the current environment is JSDOM-like.10        typeof ResizeObserver === "function" &&11            ResizeObserver.toString().includes("[native code]")12            ? "full"13            : "none",14    };15}16/**17 * Gets all tabbable elements in the body and finds the next/previous tabbable element18 * from the `currentNode` based on the `direction` provided.19 * @param currentNode - the node we want to get the next/previous tabbable from20 */21export function getTabbableFrom(currentNode, direction) {22    if (!isTabbable(currentNode, getTabbableOptions())) {23        return getTabbableFromFocusable(currentNode, direction);24    }25    const doc = getDocument(currentNode);26    const allTabbable = tabbable(doc.body, getTabbableOptions());27    if (direction === "prev")28        allTabbable.reverse();29    const activeIndex = allTabbable.indexOf(currentNode);30    if (activeIndex === -1)31        return doc.body;32    const nextTabbableElements = allTabbable.slice(activeIndex + 1);33    return nextTabbableElements[0];34}35export function getTabbableFromFocusable(currentNode, direction) {36    const doc = getDocument(currentNode);37    if (!isFocusable(currentNode, getTabbableOptions()))38        return doc.body;39    // find all focusable nodes, since some elements may be focusable but not tabbable40    // such as context menu triggers41    const allFocusable = focusable(doc.body, getTabbableOptions());42    // find index of current node among focusable siblings43    if (direction === "prev")44        allFocusable.reverse();45    const activeIndex = allFocusable.indexOf(currentNode);46    if (activeIndex === -1)47        return doc.body;48    const nextFocusableElements = allFocusable.slice(activeIndex + 1);49    // find the next focusable node that is also tabbable50    return nextFocusableElements.find((node) => isTabbable(node, getTabbableOptions())) ?? doc.body;51}52