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import { isBlockGroupOfType } from '../typeCheck/isBlockGroupOfType';
import { iterateSelections } from './iterateSelections';
import { mutateBlock } from '../common/mutate';
import type {
ContentModelBlock,
ContentModelBlockGroup,
ContentModelBlockGroupType,
ContentModelDocument,
ContentModelListItem,
ContentModelParagraph,
ContentModelSegment,
ContentModelTable,
IterateSelectionsOption,
OperationalBlocks,
ReadonlyContentModelBlock,
ReadonlyContentModelBlockGroup,
ReadonlyContentModelDocument,
ReadonlyContentModelListItem,
ReadonlyContentModelParagraph,
ReadonlyContentModelSegment,
ReadonlyContentModelTable,
ReadonlyOperationalBlocks,
ReadonlyTableSelectionContext,
ShallowMutableContentModelParagraph,
ShallowMutableContentModelSegment,
TableSelectionContext,
TypeOfBlockGroup,
} from 'roosterjs-content-model-types';
//#region getSelectedSegmentsAndParagraphs
/**
* Get an array of selected parent paragraph and child segment pair
* @param model The Content Model to get selection from
* @param includingFormatHolder True means also include format holder as segment from list item, in that case paragraph will be null
* @param includingEntity True to include entity in result as well
*/
export function getSelectedSegmentsAndParagraphs(
model: ContentModelDocument,
includingFormatHolder: boolean,
includingEntity?: boolean
): [ContentModelSegment, ContentModelParagraph | null, ContentModelBlockGroup[]][];
/**
* Get an array of selected parent paragraph and child segment pair, return mutable paragraph and segments
* @param model The Content Model to get selection from
* @param includingFormatHolder True means also include format holder as segment from list item, in that case paragraph will be null
* @param includingEntity True to include entity in result as well
* @param mutate Set to true to indicate we will mutate the selected paragraphs
*/
export function getSelectedSegmentsAndParagraphs(
model: ReadonlyContentModelDocument,
includingFormatHolder: boolean,
includingEntity: boolean,
mutate: true
): [
ShallowMutableContentModelSegment,
ContentModelParagraph | null,
ReadonlyContentModelBlockGroup[]
][];
/**
* Get an array of selected parent paragraph and child segment pair (Readonly)
* @param model The Content Model to get selection from
* @param includingFormatHolder True means also include format holder as segment from list item, in that case paragraph will be null
* @param includingEntity True to include entity in result as well
*/
export function getSelectedSegmentsAndParagraphs(
model: ReadonlyContentModelDocument,
includingFormatHolder: boolean,
includingEntity?: boolean
): [
ReadonlyContentModelSegment,
ReadonlyContentModelParagraph | null,
ReadonlyContentModelBlockGroup[]
][];
export function getSelectedSegmentsAndParagraphs(
model: ReadonlyContentModelDocument,
includingFormatHolder: boolean,
includingEntity?: boolean,
mutate?: boolean
): [
ReadonlyContentModelSegment,
ReadonlyContentModelParagraph | null,
ReadonlyContentModelBlockGroup[]
][] {
const selections = collectSelections(model, {
includeListFormatHolder: includingFormatHolder ? 'allSegments' : 'never',
});
const result: [
ReadonlyContentModelSegment,
ReadonlyContentModelParagraph | null,
ReadonlyContentModelBlockGroup[]
][] = [];
selections.forEach(({ segments, block, path }) => {
if (segments) {
if (
includingFormatHolder &&
!block &&
segments.length == 1 &&
path[0].blockGroupType == 'ListItem' &&
segments[0] == path[0].formatHolder
) {
const list = path[0];
Iif (mutate) {
mutateBlock(list);
}
result.push([list.formatHolder, null, path]);
} else if (block?.blockType == 'Paragraph') {
if (mutate) {
mutateBlock(block);
}
segments.forEach(segment => {
if (
includingEntity ||
segment.segmentType != 'Entity' ||
!segment.entityFormat.isReadonly
) {
result.push([segment, block, path]);
}
});
}
} else if (block?.blockType == 'Entity' && includingEntity) {
// Here we treat the entity as segment since they are compatible, then it has no parent paragraph
result.push([block, null /*paragraph*/, path]);
}
});
return result;
}
//#endregion
//#region getSelectedSegments
/**
* Get an array of selected segments from a content model
* @param model The Content Model to get selection from
* @param includingFormatHolder True means also include format holder as segment from list item
*/
export function getSelectedSegments(
model: ContentModelDocument,
includingFormatHolder: boolean
): ContentModelSegment[];
/**
* Get an array of selected segments from a content model, return mutable segments
* @param model The Content Model to get selection from
* @param includingFormatHolder True means also include format holder as segment from list item
* @param mutate Set to true to indicate we will mutate the selected paragraphs
*/
export function getSelectedSegments(
model: ReadonlyContentModelDocument,
includingFormatHolder: boolean,
mutate: true
): ShallowMutableContentModelSegment[];
/**
* Get an array of selected segments from a content model (Readonly)
* @param model The Content Model to get selection from
* @param includingFormatHolder True means also include format holder as segment from list item
*/
export function getSelectedSegments(
model: ReadonlyContentModelDocument,
includingFormatHolder: boolean
): ReadonlyContentModelSegment[];
export function getSelectedSegments(
model: ReadonlyContentModelDocument,
includingFormatHolder: boolean,
mutate?: boolean
): ReadonlyContentModelSegment[] {
const segments = mutate
? getSelectedSegmentsAndParagraphs(
model,
includingFormatHolder,
false /*includeEntity*/,
true /*mutate*/
)
: getSelectedSegmentsAndParagraphs(model, includingFormatHolder);
return segments.map(x => x[0]);
}
//#endregion
//#region getSelectedParagraphs
/**
* Get any array of selected paragraphs from a content model
* @param model The Content Model to get selection from
*/
export function getSelectedParagraphs(model: ContentModelDocument): ContentModelParagraph[];
/**
* Get any array of selected paragraphs from a content model, return mutable paragraphs
* @param model The Content Model to get selection from
* @param mutate Set to true to indicate we will mutate the selected paragraphs
*/
export function getSelectedParagraphs(
model: ReadonlyContentModelDocument,
mutate: true
): ShallowMutableContentModelParagraph[];
/**
* Get any array of selected paragraphs from a content model (Readonly)
* @param model The Content Model to get selection from
*/
export function getSelectedParagraphs(
model: ReadonlyContentModelDocument
): ReadonlyContentModelParagraph[];
export function getSelectedParagraphs(
model: ReadonlyContentModelDocument,
mutate?: boolean
): ReadonlyContentModelParagraph[] {
const selections = collectSelections(model, { includeListFormatHolder: 'never' });
const result: ReadonlyContentModelParagraph[] = [];
removeUnmeaningfulSelections(selections);
selections.forEach(({ block }) => {
if (block?.blockType == 'Paragraph') {
result.push(mutate ? mutateBlock(block) : block);
}
});
return result;
}
//#endregion
//#region getOperationalBlocks
/**
* Get an array of block group - block pair that is of the expected block group type from selection
* @param group The root block group to search
* @param blockGroupTypes The expected block group types
* @param stopTypes Block group types that will stop searching when hit
* @param deepFirst True means search in deep first, otherwise wide first
* @param isValidTarget @optional An additional callback to validate whether a matching block group is a valid target
*/
export function getOperationalBlocks<T extends ContentModelBlockGroup>(
group: ContentModelBlockGroup,
blockGroupTypes: TypeOfBlockGroup<T>[],
stopTypes: ContentModelBlockGroupType[],
deepFirst?: boolean,
isValidTarget?: (block: ReadonlyContentModelBlockGroup) => boolean
): OperationalBlocks<T>[];
/**
* Get an array of block group - block pair that is of the expected block group type from selection (Readonly)
* @param group The root block group to search
* @param blockGroupTypes The expected block group types
* @param stopTypes Block group types that will stop searching when hit
* @param deepFirst True means search in deep first, otherwise wide first
* @param isValidTarget @optional An additional callback to validate whether a matching block group is a valid target
*/
export function getOperationalBlocks<T extends ReadonlyContentModelBlockGroup>(
group: ReadonlyContentModelBlockGroup,
blockGroupTypes: TypeOfBlockGroup<T>[],
stopTypes: ContentModelBlockGroupType[],
deepFirst?: boolean,
isValidTarget?: (block: ReadonlyContentModelBlockGroup) => boolean
): ReadonlyOperationalBlocks<T>[];
export function getOperationalBlocks<T extends ContentModelBlockGroup>(
group: ReadonlyContentModelBlockGroup,
blockGroupTypes: TypeOfBlockGroup<T>[],
stopTypes: ContentModelBlockGroupType[],
deepFirst?: boolean,
isValidTarget?: (block: ReadonlyContentModelBlockGroup) => boolean
): ReadonlyOperationalBlocks<T>[] {
const result: ReadonlyOperationalBlocks<T>[] = [];
const findSequence = deepFirst ? blockGroupTypes.map(type => [type]) : [blockGroupTypes];
const selections = collectSelections(group, {
includeListFormatHolder: 'never',
contentUnderSelectedTableCell: 'ignoreForTable', // When whole table is selected, we treat the table as a single block
});
removeUnmeaningfulSelections(selections);
selections.forEach(({ path, block }) => {
for (let i = 0; i < findSequence.length; i++) {
const groupIndex = getClosestAncestorBlockGroupIndex(
path,
findSequence[i],
stopTypes,
isValidTarget
);
if (groupIndex >= 0) {
if (result.filter(x => x.block == path[groupIndex]).length <= 0) {
result.push({
parent: path[groupIndex + 1],
block: path[groupIndex] as T,
path: path.slice(groupIndex + 1),
});
}
break;
} else if (i == findSequence.length - 1 && block) {
result.push({
parent: path[0],
block: block,
path,
});
break;
}
}
});
return result;
}
//#endregion
//#region getFirstSelectedTable
/**
* Get the first selected table from content model
* @param model The Content Model to get selection from
*/
export function getFirstSelectedTable(
model: ContentModelDocument
): [ContentModelTable | undefined, ContentModelBlockGroup[]];
/**
* Get the first selected table from content model (Readonly)
* @param model The Content Model to get selection from
*/
export function getFirstSelectedTable(
model: ReadonlyContentModelDocument
): [ReadonlyContentModelTable | undefined, ReadonlyContentModelBlockGroup[]];
export function getFirstSelectedTable(
model: ReadonlyContentModelDocument
): [ReadonlyContentModelTable | undefined, ReadonlyContentModelBlockGroup[]] {
const selections = collectSelections(model, { includeListFormatHolder: 'never' });
let table: ReadonlyContentModelTable | undefined;
let resultPath: ReadonlyContentModelBlockGroup[] = [];
removeUnmeaningfulSelections(selections);
selections.forEach(({ block, tableContext, path }) => {
if (!table) {
if (block?.blockType == 'Table') {
table = block;
resultPath = [...path];
} else if (tableContext?.table) {
table = tableContext.table;
const parent = path.filter(
group => group.blocks.indexOf(tableContext.table) >= 0
)[0];
const index = path.indexOf(parent);
resultPath = index >= 0 ? path.slice(index) : [];
}
}
});
return [table, resultPath];
}
//#endregion
//#region getFirstSelectedListItem
/**
* Get the first selected list item from content model
* @param model The Content Model to get selection from
*/
export function getFirstSelectedListItem(
model: ContentModelDocument
): ContentModelListItem | undefined;
/**
* Get the first selected list item from content model (Readonly)
* @param model The Content Model to get selection from
*/
export function getFirstSelectedListItem(
model: ReadonlyContentModelDocument
): ReadonlyContentModelListItem | undefined;
export function getFirstSelectedListItem(
model: ReadonlyContentModelDocument
): ReadonlyContentModelListItem | undefined {
let listItem: ContentModelListItem | undefined;
getOperationalBlocks(model, ['ListItem'], ['TableCell']).forEach(r => {
if (!listItem && isBlockGroupOfType<ContentModelListItem>(r.block, 'ListItem')) {
listItem = r.block;
}
});
return listItem;
}
//#endregion
//#region collectSelections
interface SelectionInfo {
path: ContentModelBlockGroup[];
segments?: ContentModelSegment[];
block?: ContentModelBlock;
tableContext?: TableSelectionContext;
}
interface ReadonlySelectionInfo {
path: ReadonlyContentModelBlockGroup[];
segments?: ReadonlyContentModelSegment[];
block?: ReadonlyContentModelBlock;
tableContext?: ReadonlyTableSelectionContext;
}
function collectSelections(
group: ContentModelBlockGroup,
option?: IterateSelectionsOption
): SelectionInfo[];
function collectSelections(
group: ReadonlyContentModelBlockGroup,
option?: IterateSelectionsOption
): ReadonlySelectionInfo[];
function collectSelections(
group: ReadonlyContentModelBlockGroup,
option?: IterateSelectionsOption
): ReadonlySelectionInfo[] {
const selections: ReadonlySelectionInfo[] = [];
iterateSelections(
group,
(path, tableContext, block, segments) => {
selections.push({
path,
tableContext,
block,
segments,
});
},
option
);
return selections;
}
//#endregion
//#region utils
function removeUnmeaningfulSelections(selections: ReadonlySelectionInfo[]) {
if (
selections.length > 1 &&
isOnlySelectionMarkerSelected(selections, false /*checkFirstParagraph*/)
) {
selections.pop();
}
// Remove head paragraph if first selection marker is the only selection
if (
selections.length > 1 &&
isOnlySelectionMarkerSelected(selections, true /*checkFirstParagraph*/)
) {
selections.shift();
}
}
function isOnlySelectionMarkerSelected(
selections: ReadonlySelectionInfo[],
checkFirstParagraph: boolean
): boolean {
const selection = selections[checkFirstParagraph ? 0 : selections.length - 1];
if (
selection.block?.blockType == 'Paragraph' &&
selection.segments &&
selection.segments.length > 0
) {
const allSegments = selection.block.segments;
const segment = selection.segments[0];
return (
selection.segments.length == 1 &&
segment.segmentType == 'SelectionMarker' &&
segment == allSegments[checkFirstParagraph ? allSegments.length - 1 : 0]
);
} else {
return false;
}
}
//#endregion
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