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ContentModelBlockGroup,
ContentModelBlockWithCache,
ContentModelDocument,
IterateSelectionsCallback,
IterateSelectionsOption,
ReadonlyContentModelBlockGroup,
ReadonlyContentModelSegment,
ReadonlyIterateSelectionsCallback,
ReadonlyTableSelectionContext,
} from 'roosterjs-content-model-types';
/**
* @internal
* This is a temporary type to pass the information of whether element cache should be persisted when possible
*/
export interface ContentModelDocumentWithPersistedCache extends ContentModelDocument {
/**
* When set to
*/
persistCache?: boolean;
}
/**
* Iterate all selected elements in a given model
* @param group The given Content Model to iterate selection from
* @param callback The callback function to access the selected element
* @param option Option to determine how to iterate
*/
export function iterateSelections(
group: ContentModelBlockGroup,
callback: IterateSelectionsCallback,
option?: IterateSelectionsOption
): void;
/**
* Iterate all selected elements in a given model (Readonly)
* @param group The given Content Model to iterate selection from
* @param callback The callback function to access the selected element
* @param option Option to determine how to iterate
*/
export function iterateSelections(
group: ReadonlyContentModelBlockGroup,
callback: ReadonlyIterateSelectionsCallback,
option?: IterateSelectionsOption
): void;
export function iterateSelections(
group: ReadonlyContentModelBlockGroup,
callback: ReadonlyIterateSelectionsCallback | IterateSelectionsCallback,
option?: IterateSelectionsOption
): void {
const persistCache =
group.blockGroupType == 'Document'
? (group as ContentModelDocumentWithPersistedCache).persistCache
: false;
const internalCallback: ReadonlyIterateSelectionsCallback = persistCache
? (callback as ReadonlyIterateSelectionsCallback)
: (path, tableContext, block, segments) => {
if (!!(block as ContentModelBlockWithCache)?.cachedElement) {
delete (block as ContentModelBlockWithCache).cachedElement;
}
return (callback as ReadonlyIterateSelectionsCallback)(
path,
tableContext,
block,
segments
);
};
internalIterateSelections([group], internalCallback, option);
}
function internalIterateSelections(
path: ReadonlyContentModelBlockGroup[],
callback: ReadonlyIterateSelectionsCallback,
option?: IterateSelectionsOption,
table?: ReadonlyTableSelectionContext,
treatAllAsSelect?: boolean
): boolean {
const parent = path[0];
const includeListFormatHolder = option?.includeListFormatHolder || 'allSegments';
const contentUnderSelectedTableCell = option?.contentUnderSelectedTableCell || 'include';
const contentUnderSelectedGeneralElement =
option?.contentUnderSelectedGeneralElement || 'contentOnly';
let hasSelectedSegment = false;
let hasUnselectedSegment = false;
for (let i = 0; i < parent.blocks.length; i++) {
const block = parent.blocks[i];
switch (block.blockType) {
case 'BlockGroup':
const newPath = [block, ...path];
if (block.blockGroupType == 'General') {
const isSelected = treatAllAsSelect || block.isSelected;
const handleGeneralContent =
!isSelected ||
contentUnderSelectedGeneralElement == 'both' ||
contentUnderSelectedGeneralElement == 'contentOnly';
const handleGeneralElement =
isSelected &&
(contentUnderSelectedGeneralElement == 'both' ||
contentUnderSelectedGeneralElement == 'generalElementOnly' ||
block.blocks.length == 0);
Iif (
(handleGeneralContent &&
internalIterateSelections(
newPath,
callback,
option,
table,
isSelected
)) ||
(handleGeneralElement && callback(path, table, block))
) {
return true;
}
} else if (
internalIterateSelections(newPath, callback, option, table, treatAllAsSelect)
) {
return true;
}
break;
case 'Table':
const rows = block.rows;
const isWholeTableSelected = rows.every(row =>
row.cells.every(cell => cell.isSelected)
);
if (contentUnderSelectedTableCell != 'include' && isWholeTableSelected) {
if (callback(path, table, block)) {
return true;
}
} else {
for (let rowIndex = 0; rowIndex < rows.length; rowIndex++) {
const row = rows[rowIndex];
for (let colIndex = 0; colIndex < row.cells.length; colIndex++) {
const cell = row.cells[colIndex];
Iif (!cell) {
continue;
}
const newTable: ReadonlyTableSelectionContext = {
table: block,
rowIndex,
colIndex,
isWholeTableSelected,
};
if (cell.isSelected && callback(path, newTable)) {
return true;
}
if (
!cell.isSelected ||
contentUnderSelectedTableCell != 'ignoreForTableOrCell'
) {
const newPath = [cell, ...path];
const isSelected = treatAllAsSelect || cell.isSelected;
if (
internalIterateSelections(
newPath,
callback,
option,
newTable,
isSelected
)
) {
return true;
}
}
}
}
}
break;
case 'Paragraph':
const segments: ReadonlyContentModelSegment[] = [];
for (let i = 0; i < block.segments.length; i++) {
const segment = block.segments[i];
const isSelected = treatAllAsSelect || segment.isSelected;
if (segment.segmentType == 'General') {
const handleGeneralContent =
!isSelected ||
contentUnderSelectedGeneralElement == 'both' ||
contentUnderSelectedGeneralElement == 'contentOnly';
const handleGeneralElement =
isSelected &&
(contentUnderSelectedGeneralElement == 'both' ||
contentUnderSelectedGeneralElement == 'generalElementOnly' ||
segment.blocks.length == 0);
Iif (
handleGeneralContent &&
internalIterateSelections(
[segment, ...path],
callback,
option,
table,
isSelected
)
) {
return true;
}
if (handleGeneralElement) {
segments.push(segment);
}
} else if (isSelected) {
segments.push(segment);
}
if (isSelected) {
hasSelectedSegment = true;
} else {
hasUnselectedSegment = true;
}
}
if (segments.length > 0 && callback(path, table, block, segments)) {
return true;
}
break;
case 'Divider':
case 'Entity':
if ((treatAllAsSelect || block.isSelected) && callback(path, table, block)) {
return true;
}
break;
}
}
Iif (
includeListFormatHolder != 'never' &&
parent.blockGroupType == 'ListItem' &&
hasSelectedSegment &&
(!hasUnselectedSegment || includeListFormatHolder == 'anySegment') &&
// When whole list item is selected, also add its format holder as selected segment
callback(path, table, undefined /*block*/, [parent.formatHolder])
) {
return true;
}
return false;
}
|