added Btable filterEvent helper based on BSV2 logic

Author: devhus

packages/bootstrap-vue-3/src/components/BTable/helpers/filter-event.ts

@@ -0,0 +1,54 @@
+import {closest, getAttr, getById, matches, select} from '../../../utils/dom'
+
+const TABLE_TAG_NAMES = ['TD', 'TH', 'TR']
+
+// Filter CSS selector for click/dblclick/etc. events
+// If any of these selectors match the clicked element, we ignore the event
+export const EVENT_FILTER = [
+  'a',
+  'a *', // Include content inside links
+  'button',
+  'button *', // Include content inside buttons
+  'input:not(.disabled):not([disabled])',
+  'select:not(.disabled):not([disabled])',
+  'textarea:not(.disabled):not([disabled])',
+  '[role="link"]',
+  '[role="link"] *',
+  '[role="button"]',
+  '[role="button"] *',
+  '[tabindex]:not(.disabled):not([disabled])',
+].join(',')
+
+// Returns `true` if we should ignore the click/double-click/keypress event
+// Avoids having the user need to use `@click.stop` on the form control
+export const filterEvent = (event: Event) => {
+  // Exit early when we don't have a target element
+  if (!event || !event.target) {
+    /* istanbul ignore next */
+    return false
+  }
+  const el = event.target as HTMLElement
+  // Exit early when element is disabled or a table element
+  if (('disabled' in el && (el as any).disabled) || TABLE_TAG_NAMES.indexOf(el.tagName) !== -1) {
+    return false
+  }
+  // Ignore the click when it was inside a dropdown menu
+  if (closest('.dropdown-menu', el)) {
+    return true
+  }
+  const label = el.tagName === 'LABEL' ? el : closest('label', el)
+  // If the label's form control is not disabled then we don't propagate event
+  // Modern browsers have `label.control` that references the associated input, but IE 11
+  // does not have this property on the label element, so we resort to DOM lookups
+  if (label) {
+    const labelFor = getAttr(label, 'for')
+    const input = labelFor ? getById(labelFor) : select('input, select, textarea', label)
+    if (input && !input.disabled) {
+      return true
+    }
+  }
+  // Otherwise check if the event target matches one of the selectors in the
+  // event filter (i.e. anchors, non disabled inputs, etc.)
+  // Return `true` if we should ignore the event
+  return matches(el, EVENT_FILTER)
+}