Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 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 | 1x 4x 2x 1x 2x 2x 1x 10x 5x 5x 5x 5x 4x 4x 4x 4x 1x | import {
getClosestAncestorBlockGroupIndex,
hasSelectionInBlock,
hasSelectionInBlockGroup,
mutateBlock,
} from 'roosterjs-content-model-dom';
import type {
DeleteSelectionContext,
DeleteSelectionStep,
ReadonlyContentModelBlock,
} from 'roosterjs-content-model-types';
function isEmptyBlock(block: ReadonlyContentModelBlock | undefined): boolean {
if (block && block.blockType == 'Paragraph') {
return block.segments.every(
segment => segment.segmentType !== 'SelectionMarker' && segment.segmentType == 'Br'
);
}
Eif (block && block.blockType == 'BlockGroup') {
return block.blocks.every(isEmptyBlock);
}
return !!block;
}
/**
* @internal
* If the first item o the list is selected in a expanded selection, we need to remove the list item levels
* @param context A context object provided by formatContentModel API
*/
export const deleteEmptyList: DeleteSelectionStep = (context: DeleteSelectionContext) => {
const { insertPoint, deleteResult } = context;
Eif (deleteResult == 'range' && insertPoint?.path) {
const index = getClosestAncestorBlockGroupIndex(
insertPoint.path,
['ListItem'],
['TableCell']
);
const item = insertPoint.path[index];
if (index >= 0 && item && item.blockGroupType == 'ListItem') {
const listItemIndex = insertPoint.path[index + 1].blocks.indexOf(item);
const previousBlock =
listItemIndex > -1
? insertPoint.path[index + 1].blocks[listItemIndex - 1]
: undefined;
const nextBlock =
listItemIndex > -1
? insertPoint.path[index + 1].blocks[listItemIndex + 1]
: undefined;
if (
hasSelectionInBlockGroup(item) &&
(!previousBlock || hasSelectionInBlock(previousBlock)) &&
nextBlock &&
isEmptyBlock(nextBlock)
) {
mutateBlock(item).levels = [];
}
}
}
};
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