How to add/delete a tree data node ? Can a slot be provided

[wanjinji]

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[lukasbach]

See #87

[wayne1203]

See #87

I tried to use "ControlledTreeEnvironment" and suppose I have full control of the tree data. In my situation, I have a param called "defaultTreeData" to save original tree data. First, I'm trying to add one node key "new-0", and reset the tree data by setState(defaultTreeData) (The tree is reset to default in UI). After that, I add the node key "new-0" again, it will occur "Encountered two children with the same key," and show 2 "new-0" in UI.

const onResetNode = () => {
    setTreeData(defaultTreeData);
}

// Call from "renderItem"
const onAddNode = (item) => {

    const temp = { ...treeData };

    const nodeId = item.index;
    const parentId = Object.values(temp).find(o => o.children.includes(nodeId)).index;

    const prefix = "new-";
    const count = Object.keys(temp).filter(o => o.match(prefix)).length;
    const newNodeId = `${prefix}${count}`;

    temp[`new-${count}`] = {
        index: newNodeId,
        canMove: true,
        isFolder: true,
        children: [],
        data: {
            id: newNodeId,
            name: `New Location ${count}`
        }
    }

    // Add node to current node children
    temp[nodeId].children = [
        newNodeId,
        ...temp[nodeId].children
    ];

    setTreeData(temp);
}