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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 60 | 1x 1x 56x 74x 37x 37x 37x 37x 37x 37x 37x 37x 10x 27x 26x 37x 37x 37x | import {
copyFormat,
createBr,
createParagraph,
normalizeParagraph,
ParagraphFormats,
setParagraphNotImplicit,
} from 'roosterjs-content-model-dom';
import type {
InsertPoint,
ShallowMutableContentModelParagraph,
} from 'roosterjs-content-model-types';
/**
* @internal
* Split the given paragraph from insert point into two paragraphs,
* and move the selection marker to the beginning of the second paragraph
* @param insertPoint The input insert point which includes the paragraph and selection marker
* @param removeImplicitParagraph Whether to remove the implicit paragraph if it becomes empty after split
* * If set to false, the implicit paragraph will be preserved even if it becomes empty
* * If set to true, the implicit paragraph will be removed if it becomes empty
* @returns The new paragraph it created
*/
export function splitParagraph(
insertPoint: InsertPoint,
removeImplicitParagraph: boolean = true
): ShallowMutableContentModelParagraph {
const { paragraph, marker } = insertPoint;
const newParagraph: ShallowMutableContentModelParagraph = createParagraph(
false /*isImplicit*/,
{},
paragraph.segmentFormat
);
copyFormat(newParagraph.format, paragraph.format, ParagraphFormats);
const markerIndex = paragraph.segments.indexOf(marker);
const segments = paragraph.segments.splice(
markerIndex,
paragraph.segments.length - markerIndex
);
newParagraph.segments.push(...segments);
const isEmptyParagraph = paragraph.segments.length == 0;
const shouldPreserveImplicitParagraph = !paragraph.isImplicit || !removeImplicitParagraph;
if (isEmptyParagraph && shouldPreserveImplicitParagraph) {
paragraph.segments.push(createBr(marker.format));
} else if (!isEmptyParagraph) {
setParagraphNotImplicit(paragraph);
}
insertPoint.paragraph = newParagraph;
normalizeParagraph(paragraph);
return newParagraph;
}
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