Press n or j to go to the next uncovered block, b, p or k for the previous block.
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ContentModelBlockGroupBase,
ContentModelBlockGroupType,
ContentModelParagraph,
ContentModelSegment,
ContentModelTableCell,
ContentModelTableRow,
} from 'roosterjs-content-model-types';
/**
* @internal
*/
export function pruneUnselectedModel(
model: ContentModelBlockGroupBase<ContentModelBlockGroupType, HTMLElement>
) {
pruneUnselectedModelInternal(model, false /* isSelectionAfterElement */);
unwrap(model);
}
function pruneUnselectedModelInternal(
model: ContentModelBlockGroupBase<ContentModelBlockGroupType, HTMLElement>,
isSelectionAfterElement: boolean
) {
for (let index = model.blocks.length - 1; index >= 0; index--) {
const block = model.blocks[index];
switch (block.blockType) {
case 'BlockGroup':
pruneUnselectedModelInternal(block, isSelectionAfterElement);
Iif (
block.blockGroupType == 'General'
? block.blocks.length == 0 && !block.isSelected
: block.blocks.length == 0
) {
model.blocks.splice(index, 1);
}
break;
case 'Divider':
case 'Entity':
Iif (!block.isSelected) {
model.blocks.splice(index, 1);
} else {
isSelectionAfterElement = true;
}
break;
case 'Paragraph':
const newSegments: ContentModelSegment[] = [];
for (const segment of block.segments) {
if (segment.segmentType == 'General') {
pruneUnselectedModel(segment);
if (segment.blocks.length > 0 || segment.isSelected) {
newSegments.push(segment);
}
} else if (segment.isSelected && segment.segmentType != 'SelectionMarker') {
newSegments.push(segment);
}
}
block.segments = newSegments;
if (block.segments.length == 0) {
model.blocks.splice(index, 1);
} else {
isSelectionAfterElement = true;
}
break;
case 'Table':
const filteredRows: ContentModelTableRow[] = [];
for (let i = 0; i < block.rows.length; i++) {
const row = block.rows[i];
for (let j = 0; j < row.cells.length; j++) {
const cell = row.cells[j];
if (!cell.isSelected) {
pruneUnselectedModelInternal(cell, isSelectionAfterElement);
} else {
isSelectionAfterElement = true;
}
}
const newCells: ContentModelTableCell[] = [];
for (let k = 0; k < row.cells.length; k++) {
const cell = row.cells[k];
if (cell.isSelected || cell.blocks.length > 0) {
newCells.push(cell);
}
}
row.cells = newCells;
Eif (row.cells.length > 0) {
filteredRows.push(row);
}
}
if (
!isSelectionAfterElement &&
filteredRows.length == 1 &&
filteredRows[0].cells.length == 1 &&
!filteredRows[0].cells[0].isSelected
) {
const cell = filteredRows[0].cells[0];
model.blocks.splice(index, 1, ...cell.blocks);
} else Iif (filteredRows.length == 0) {
model.blocks.splice(index, 1);
} else {
block.rows = filteredRows;
}
break;
}
}
return isSelectionAfterElement;
}
function unwrap(model: ContentModelBlockGroupBase<ContentModelBlockGroupType, HTMLElement>) {
let block = model.blocks[0];
if (model.blocks.length == 1) {
while (block.blockType == 'BlockGroup') {
model.blocks = block.blocks;
block = model.blocks[0];
Iif (model.blocks.length > 1) {
return;
}
}
if (block.blockType == 'Paragraph') {
block.isImplicit = true;
block.format = {};
inheritSegmentFormatToChildren(block);
}
}
}
function inheritSegmentFormatToChildren(parent: ContentModelParagraph) {
const value = parent.segmentFormat;
if (value !== undefined) {
for (let index = 0; index < parent.segments.length; index++) {
const segment = parent.segments[index];
segment.format = {
...parent.segmentFormat,
...segment.format,
};
}
}
}
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