gnezim
56 lines
2.3 KiB
JavaScript
56 lines
2.3 KiB
JavaScript
import { NEW_FOCUS, newFocus } from './solver';
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import { getAllAffectedNodes } from './utils/all-affected';
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import { getAllTabbableNodes, getTabbableNodes } from './utils/DOMutils';
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import { pickFirstFocus } from './utils/firstFocus';
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import { isDefined, isNotAGuard } from './utils/is';
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import { allParentAutofocusables, getTopCommonParent } from './utils/parenting';
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var findAutoFocused = function (autoFocusables) { return function (node) {
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return node.autofocus || (node.dataset && !!node.dataset.autofocus) || autoFocusables.indexOf(node) >= 0;
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}; };
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var reorderNodes = function (srcNodes, dstNodes) {
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var remap = new Map();
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dstNodes.forEach(function (entity) { return remap.set(entity.node, entity); });
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return srcNodes.map(function (node) { return remap.get(node); }).filter(isDefined);
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};
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export var getFocusMerge = function (topNode, lastNode) {
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var activeElement = (document && document.activeElement);
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var entries = getAllAffectedNodes(topNode).filter(isNotAGuard);
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var commonParent = getTopCommonParent(activeElement || topNode, topNode, entries);
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var anyFocusable = getAllTabbableNodes(entries);
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var innerElements = getTabbableNodes(entries).filter(function (_a) {
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var node = _a.node;
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return isNotAGuard(node);
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});
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if (!innerElements[0]) {
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innerElements = anyFocusable;
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if (!innerElements[0]) {
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return undefined;
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}
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}
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var outerNodes = getAllTabbableNodes([commonParent]).map(function (_a) {
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var node = _a.node;
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return node;
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});
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var orderedInnerElements = reorderNodes(outerNodes, innerElements);
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var innerNodes = orderedInnerElements.map(function (_a) {
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var node = _a.node;
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return node;
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});
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var newId = newFocus(innerNodes, outerNodes, activeElement, lastNode);
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if (newId === NEW_FOCUS) {
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var autoFocusable = anyFocusable
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.map(function (_a) {
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var node = _a.node;
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return node;
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})
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.filter(findAutoFocused(allParentAutofocusables(entries)));
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return {
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node: autoFocusable && autoFocusable.length ? pickFirstFocus(autoFocusable) : pickFirstFocus(innerNodes),
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};
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}
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if (newId === undefined) {
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return newId;
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}
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return orderedInnerElements[newId];
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};
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