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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 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 | 1x 1x 1x 1x 1x 1x 1x 2323x 2323x 770x 770x 770x 47x 723x 191x 78x 13x 770x 2323x 2297x 2323x 2323x 2323x 770x 48x 1x 2323x 2032x 6x 2323x 2323x 250x 250x 250x 250x 1x 1x 1x 2323x 2152x 2152x 2152x 2152x 6456x 2152x 433x 6456x 6456x 1868x 1059x 1059x 5397x | import { areSameFormats } from '../../domToModel/utils/areSameFormats';
import { createBr } from '../creators/createBr';
import { isSegmentEmpty } from './isEmpty';
import { isWhiteSpacePreserved } from '../../domUtils/isWhiteSpacePreserved';
import { mutateBlock, mutateSegment } from './mutate';
import { normalizeAllSegments } from './normalizeSegment';
import type {
ContentModelSegmentFormat,
ReadonlyContentModelParagraph,
ReadonlyContentModelSegment,
} from 'roosterjs-content-model-types';
/**
* @param paragraph The paragraph to normalize
* Normalize a paragraph. If it is empty, add a BR segment to make sure it can insert content
*/
export function normalizeParagraph(paragraph: ReadonlyContentModelParagraph) {
const segments = paragraph.segments;
if (!paragraph.isImplicit && segments.length > 0) {
const last = segments[segments.length - 1];
const secondLast = segments[segments.length - 2];
if (
last.segmentType == 'SelectionMarker' &&
(!secondLast || secondLast.segmentType == 'Br')
) {
mutateBlock(paragraph).segments.push(createBr(last.format));
} else if (segments.length > 1 && segments[segments.length - 1].segmentType == 'Br') {
const noMarkerSegments = segments.filter(x => x.segmentType != 'SelectionMarker');
// When there is content with a <BR> tag at the end, we can remove the BR.
// But if there are more than one <BR> at the end, do not remove them.
if (
noMarkerSegments.length > 1 &&
noMarkerSegments[noMarkerSegments.length - 2].segmentType != 'Br'
) {
mutateBlock(paragraph).segments.pop();
}
}
normalizeParagraphStyle(paragraph);
}
if (!isWhiteSpacePreserved(paragraph.format.whiteSpace)) {
normalizeAllSegments(paragraph);
}
removeEmptyLinks(paragraph);
removeEmptySegments(paragraph);
moveUpSegmentFormat(paragraph);
}
function normalizeParagraphStyle(paragraph: ReadonlyContentModelParagraph) {
// New paragraph should not have white-space style
if (
paragraph.format.whiteSpace &&
paragraph.segments.every(
seg => seg.segmentType == 'Br' || seg.segmentType == 'SelectionMarker'
)
) {
delete mutateBlock(paragraph).format.whiteSpace;
}
}
function removeEmptySegments(block: ReadonlyContentModelParagraph) {
for (let j = block.segments.length - 1; j >= 0; j--) {
if (isSegmentEmpty(block.segments[j], true /*treatAnchorAsNotEmpty*/)) {
mutateBlock(block).segments.splice(j, 1);
}
}
}
function removeEmptyLinks(paragraph: ReadonlyContentModelParagraph) {
const marker = paragraph.segments.find(x => x.segmentType == 'SelectionMarker');
if (marker) {
const markerIndex = paragraph.segments.indexOf(marker);
const prev = paragraph.segments[markerIndex - 1];
const next = paragraph.segments[markerIndex + 1];
if (
(prev &&
!prev.link &&
areSameFormats(prev.format, marker.format) &&
(!next || (!next.link && areSameFormats(next.format, marker.format))) &&
marker.link) ||
(!prev &&
marker.link &&
next &&
!next.link &&
areSameFormats(next.format, marker.format))
) {
mutateSegment(paragraph, marker, mutableMarker => {
delete mutableMarker.link;
});
}
}
}
type FormatsToMoveUp = 'fontFamily' | 'fontSize' | 'textColor';
const formatsToMoveUp: FormatsToMoveUp[] = ['fontFamily', 'fontSize', 'textColor'];
// When all segments are sharing the same segment format (font name, size and color), we can move its format to paragraph
function moveUpSegmentFormat(paragraph: ReadonlyContentModelParagraph) {
if (!paragraph.decorator) {
const segments = paragraph.segments.filter(x => x.segmentType != 'SelectionMarker');
const target = paragraph.segmentFormat || {};
let changed = false;
formatsToMoveUp.forEach(key => {
changed = internalMoveUpSegmentFormat(segments, target, key) || changed;
});
if (changed) {
mutateBlock(paragraph).segmentFormat = target;
}
}
}
function internalMoveUpSegmentFormat(
segments: ReadonlyContentModelSegment[],
target: ContentModelSegmentFormat,
formatKey: FormatsToMoveUp
): boolean {
const firstFormat = segments[0]?.format;
if (
firstFormat?.[formatKey] &&
segments.every(segment => segment.format[formatKey] == firstFormat[formatKey]) &&
target[formatKey] != firstFormat[formatKey]
) {
target[formatKey] = firstFormat[formatKey];
return true;
} else {
return false;
}
}
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