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| 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 49 50 51 52 53 54 55 56 57 58 59 | 1x 1x 13x 13x 13x 12x 3x 3x 4x 4x 4x 4x 8x 4x 4x 1x 1x 1x 6x 1x | import { formatSegmentWithContentModel } from '../utils/formatSegmentWithContentModel';
import type { IEditor } from 'roosterjs-content-model-types';
/**
* Change the capitalization of text in the selection
* @param editor The editor instance
* @param capitalization The case option
* @param language Optional parameter for language string that should comply to "IETF BCP 47 Tags for
* Identifying Languages". For example: 'en' or 'en-US' for English, 'tr' for Turkish.
* Default is the host environment’s current locale.
*/
export function changeCapitalization(
editor: IEditor,
capitalization: 'sentence' | 'lowerCase' | 'upperCase' | 'capitalize',
language?: string
) {
editor.focus();
formatSegmentWithContentModel(editor, 'changeCapitalization', (_, __, segment) => {
if (segment?.segmentType == 'Text') {
switch (capitalization) {
case 'lowerCase':
segment.text = segment.text.toLocaleLowerCase(language);
break;
case 'upperCase':
segment.text = segment.text.toLocaleUpperCase(language);
break;
case 'capitalize':
const wordArray = segment.text.toLocaleLowerCase(language).split(' ');
for (let i = 0; i < wordArray.length; i++) {
wordArray[i] =
wordArray[i].charAt(0).toLocaleUpperCase(language) +
wordArray[i].slice(1);
}
segment.text = wordArray.join(' ');
break;
case 'sentence':
const punctuationMarks = '[\\.\\!\\?]';
// Find a match of a word character either:
// - At the beginning of a string with or without preceding whitespace, for
// example: ' hello world' and 'hello world' strings would both match 'h'.
// - Or preceded by a punctuation mark and at least one whitespace, for
// example 'yes. hello world' would match 'y' and 'h'.
const regex = new RegExp('^\\s*\\w|' + punctuationMarks + '\\s+\\w', 'g');
segment.text = segment.text
.toLocaleLowerCase(language)
.replace(regex, match => match.toLocaleUpperCase(language));
break;
}
}
});
}
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