element-plus
Version:
A Component Library for Vue 3
89 lines (86 loc) • 3.16 kB
JavaScript
import { onMounted, onUpdated } from 'vue';
import { useEventListener } from '@vueuse/core';
import { useNamespace } from '../../../../hooks/use-namespace/index.mjs';
import { EVENT_CODE } from '../../../../constants/aria.mjs';
function useKeydown({ el$ }, store) {
const ns = useNamespace("tree");
onMounted(() => {
initTabIndex();
});
onUpdated(() => {
const checkboxItems = Array.from(el$.value.querySelectorAll("input[type=checkbox]"));
checkboxItems.forEach((checkbox) => {
checkbox.setAttribute("tabindex", "-1");
});
});
const handleKeydown = (ev) => {
const currentItem = ev.target;
if (!currentItem.className.includes(ns.b("node")))
return;
const code = ev.code;
const treeItems = Array.from(el$.value.querySelectorAll(`.${ns.is("focusable")}[role=treeitem]`));
const currentIndex = treeItems.indexOf(currentItem);
let nextIndex;
if ([EVENT_CODE.up, EVENT_CODE.down].includes(code)) {
ev.preventDefault();
if (code === EVENT_CODE.up) {
nextIndex = currentIndex === -1 ? 0 : currentIndex !== 0 ? currentIndex - 1 : treeItems.length - 1;
const startIndex = nextIndex;
while (true) {
if (store.value.getNode(treeItems[nextIndex].dataset.key).canFocus)
break;
nextIndex--;
if (nextIndex === startIndex) {
nextIndex = -1;
break;
}
if (nextIndex < 0) {
nextIndex = treeItems.length - 1;
}
}
} else {
nextIndex = currentIndex === -1 ? 0 : currentIndex < treeItems.length - 1 ? currentIndex + 1 : 0;
const startIndex = nextIndex;
while (true) {
if (store.value.getNode(treeItems[nextIndex].dataset.key).canFocus)
break;
nextIndex++;
if (nextIndex === startIndex) {
nextIndex = -1;
break;
}
if (nextIndex >= treeItems.length) {
nextIndex = 0;
}
}
}
nextIndex !== -1 && treeItems[nextIndex].focus();
}
if ([EVENT_CODE.left, EVENT_CODE.right].includes(code)) {
ev.preventDefault();
currentItem.click();
}
const hasInput = currentItem.querySelector('[type="checkbox"]');
if ([EVENT_CODE.enter, EVENT_CODE.numpadEnter, EVENT_CODE.space].includes(code) && hasInput) {
ev.preventDefault();
hasInput.click();
}
};
useEventListener(el$, "keydown", handleKeydown);
const initTabIndex = () => {
var _a;
const treeItems = Array.from(el$.value.querySelectorAll(`.${ns.is("focusable")}[role=treeitem]`));
const checkboxItems = Array.from(el$.value.querySelectorAll("input[type=checkbox]"));
checkboxItems.forEach((checkbox) => {
checkbox.setAttribute("tabindex", "-1");
});
const checkedItem = el$.value.querySelectorAll(`.${ns.is("checked")}[role=treeitem]`);
if (checkedItem.length) {
checkedItem[0].setAttribute("tabindex", "0");
return;
}
(_a = treeItems[0]) == null ? void 0 : _a.setAttribute("tabindex", "0");
};
}
export { useKeydown };
//# sourceMappingURL=useKeydown.mjs.map