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getTreeEventSubscription.ts
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getTreeEventSubscription.ts
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/*******************************************************************************
* Copyright (c) 2019, 2023 Obeo.
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Obeo - initial API and implementation
*******************************************************************************/
export const getTreeEventSubscription = (depth: number): string => {
const treeChildren = recursiveGetChildren(depth);
const subscription = `
subscription treeEvent($input: TreeEventInput!) {
treeEvent(input: $input) {
__typename
... on TreeRefreshedEventPayload {
id
tree {
id
children {
${treeChildren}
}
}
}
}
}
`;
return subscription + fragment;
};
const fragment = `
fragment treeItemFields on TreeItem {
id
hasChildren
expanded
label
editable
deletable
selectable
kind
imageURL
}
`;
const recursiveGetChildren = (depth: number): string => {
let children = '';
if (depth > 0) {
children = `
children {
${recursiveGetChildren(depth - 1)}
}`;
}
return `...treeItemFields${children}`;
};