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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 2337x 2337x 784x 784x 784x 50x 734x 191x 78x 13x 784x 2337x 2311x 2337x 2337x 2337x 784x 48x 1x 2337x 2049x 6x 2337x 2337x 253x 253x 253x 253x 1x 1x 1x 2337x 2166x 2166x 2166x 2166x 6498x 2166x 434x 6498x 6498x 1869x 1060x 1060x 5438x | 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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