40 lines
1.2 KiB
JavaScript
40 lines
1.2 KiB
JavaScript
/**
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* @module bindings/dom
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*/
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/* globals getSelection */
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import { getRelativePosition } from '../../utils/relativePosition.mjs'
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let relativeSelection = null
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const _getCurrentRelativeSelection = domBinding => {
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const { baseNode, baseOffset, extentNode, extentOffset } = getSelection()
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const baseNodeType = domBinding.domToType.get(baseNode)
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const extentNodeType = domBinding.domToType.get(extentNode)
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if (baseNodeType !== undefined && extentNodeType !== undefined) {
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return {
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from: getRelativePosition(baseNodeType, baseOffset),
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to: getRelativePosition(extentNodeType, extentOffset)
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}
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}
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return null
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}
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export const getCurrentRelativeSelection = typeof getSelection !== 'undefined' ? _getCurrentRelativeSelection : domBinding => null
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export const beforeTransactionSelectionFixer = domBinding => {
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relativeSelection = getCurrentRelativeSelection(domBinding)
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}
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/**
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* Reset the browser range after every transaction.
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* This prevents any collapsing issues with the local selection.
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* @private
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*/
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export const afterTransactionSelectionFixer = domBinding => {
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if (relativeSelection !== null) {
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domBinding.restoreSelection(relativeSelection)
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}
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}
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