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source-tree.js
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44 lines (35 loc) · 1.01 KB
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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
// @flow
/**
* Source tree reducer
* @module reducers/source-tree
*/
import makeRecord from "../utils/makeRecord";
import type { SourceTreeAction } from "../actions/types";
import type { Record } from "../utils/makeRecord";
export type SourceTreeState = {
expanded: any
};
export function InitialState(): Record<SourceTreeState> {
return makeRecord({
expanded: null
})();
}
export default function update(
state: Record<SourceTreeState> = InitialState(),
action: SourceTreeAction
): Record<SourceTreeState> {
switch (action.type) {
case "SET_EXPANDED_STATE":
return state.set("expanded", action.expanded);
}
return state;
}
type OuterState = {
sourceTree: Record<SourceTreeState>
};
export function getExpandedState(state: OuterState) {
return state.sourceTree.get("expanded");
}