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13555f3 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 | // Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
// See LICENSE.txt for license information.
import {InlineStrategy} from '../pluginStrategy'
import findRangesWithRegex from '../utils/findRangesWithRegex'
const createStrikethroughStyleStrategy = (): InlineStrategy => {
const strikethroughRegex = /(~~)(.+?)(~~)/g
const strikethroughDelimiterRegex = /^(~~)|(~~)$/g
return {
style: 'STRIKETHROUGH',
delimiterStyle: 'STRIKETHROUGH-DELIMITER',
findStyleRanges: (block) => {
// Return an array of arrays containing start and end indices for ranges of
// text that should be crossed out
// e.g. [[0,6], [10,20]]
const text = block.getText()
const strikethroughRanges = findRangesWithRegex(text, strikethroughRegex)
return strikethroughRanges
},
findDelimiterRanges: (block, styleRanges) => {
// Find ranges for delimiters at the beginning/end of styled text ranges
// Returns an array of arrays containing start and end indices for delimiters
const text = block.getText()
let strikethroughDelimiterRanges: number[][] = []
styleRanges.forEach((styleRange) => {
const delimiterRange = findRangesWithRegex(
text.substring(styleRange[0], styleRange[1] + 1),
strikethroughDelimiterRegex,
).map((indices) => indices.map((x) => x + styleRange[0]))
strikethroughDelimiterRanges = strikethroughDelimiterRanges.concat(
delimiterRange,
)
})
return strikethroughDelimiterRanges
},
styles: {
textDecoration: 'line-through',
},
delimiterStyles: {
opacity: 0.4,
textDecoration: 'none',
},
}
}
export default createStrikethroughStyleStrategy
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