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[@mantine/core] Tree: Add optional initialCheckedState property #6697

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Aug 26, 2024
Merged

[@mantine/core] Tree: Add optional initialCheckedState property #6697

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966b322
[@mantine/core] Tree: Add optional initialCheckedState property to us…
fredgig Aug 19, 2024
9825020
Move accumulator from function parameter as default value to function…
fredgig Aug 19, 2024
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3 changes: 3 additions & 0 deletions apps/mantine.dev/src/pages/core/tree.mdx
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Original file line number Diff line number Diff line change
Expand Up @@ -125,6 +125,9 @@ export interface UseTreeInput {
/** Initial selected state of nodes */
initialSelectedState?: string[];

/** Initial checked state of nodes */
initialCheckedState?: string[];

/** Determines whether multiple node can be selected at a time */
multiple?: boolean;
}
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23 changes: 18 additions & 5 deletions packages/@mantine/core/src/components/Tree/use-tree.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -10,7 +10,7 @@ import type { TreeNodeData } from './Tree';

export type TreeExpandedState = Record<string, boolean>;

function getInitialState(
function getInitialExpandedState(
initialState: TreeExpandedState,
data: TreeNodeData[],
value: string | string[] | undefined,
Expand All @@ -20,20 +20,31 @@ function getInitialState(
acc[node.value] = node.value in initialState ? initialState[node.value] : node.value === value;

if (Array.isArray(node.children)) {
getInitialState(initialState, node.children, value, acc);
getInitialExpandedState(initialState, node.children, value, acc);
}
});

return acc;
}

function getInitialCheckedState(initialState: string[], data: TreeNodeData[]) {
const acc: string[] = [];

initialState.forEach((node) => acc.push(...getChildrenNodesValues(node, data)));

return acc;
}

export interface UseTreeInput {
/** Initial expanded state of all nodes */
initialExpandedState?: TreeExpandedState;

/** Initial selected state of nodes */
initialSelectedState?: string[];

/** Initial checked state of nodes */
initialCheckedState?: string[];

/** Determines whether multiple node can be selected at a time */
multiple?: boolean;
}
Expand Down Expand Up @@ -116,22 +127,24 @@ export interface UseTreeReturnType {

export function useTree({
initialSelectedState = [],
initialCheckedState = [],
initialExpandedState = {},
multiple = false,
}: UseTreeInput = {}): UseTreeReturnType {
const [data, setData] = useState<TreeNodeData[]>([]);
const [expandedState, setExpandedState] = useState(initialExpandedState);
const [selectedState, setSelectedState] = useState(initialSelectedState);
const [checkedState, setCheckedState] = useState<string[]>([]);
const [checkedState, setCheckedState] = useState(initialCheckedState);
const [anchorNode, setAnchorNode] = useState<string | null>(null);
const [hoveredNode, setHoveredNode] = useState<string | null>(null);

const initialize = useCallback(
(_data: TreeNodeData[]) => {
setExpandedState((current) => getInitialState(current, _data, selectedState));
setExpandedState((current) => getInitialExpandedState(current, _data, selectedState));
setCheckedState((current) => getInitialCheckedState(current, _data));
setData(_data);
},
[selectedState]
[selectedState, checkedState]
);

const toggleExpanded = useCallback((value: string) => {
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