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Size: 1.44 KB
Versions: 271
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Stored size: 1.44 KB
Contents
/* global dom, text */
/**
* Return accessible text for an implicit and/or explicit HTML label element
* @param {VirtualNode} element
* @param {Object} context
* @property {Bool} inControlContext
* @property {Bool} inLabelledByContext
* @return {String} Label text
*/
text.labelText = function labelText(virtualNode, context = {}) {
const { alreadyProcessed } = text.accessibleTextVirtual;
if (
context.inControlContext ||
context.inLabelledByContext ||
alreadyProcessed(virtualNode, context)
) {
return '';
}
if (!context.startNode) {
context.startNode = virtualNode;
}
const labelContext = { inControlContext: true, ...context };
const explicitLabels = getExplicitLabels(virtualNode);
const implicitLabel = dom.findUpVirtual(virtualNode, 'label');
let labels;
if (implicitLabel) {
labels = [...explicitLabels, implicitLabel];
labels.sort(axe.utils.nodeSorter);
} else {
labels = explicitLabels;
}
return labels
.map(label => text.accessibleText(label, labelContext))
.filter(text => text !== '')
.join(' ');
};
/**
* Find a non-ARIA label for an element
* @private
* @param {VirtualNode} element The VirtualNode instance whose label we are seeking
* @return {HTMLElement} The label element, or null if none is found
*/
function getExplicitLabels({ actualNode }) {
if (!actualNode.id) {
return [];
}
return dom.findElmsInContext({
elm: 'label',
attr: 'for',
value: actualNode.id,
context: actualNode
});
}
Version data entries
271 entries across 271 versions & 1 rubygems