Request for API to get the collapsed or opened status of a directory node.

[Kaiser-Yang]

Why this feature request?

I've used vscode's vim extension for a while. When I used explorer in vscode, I found a nice functionality, I can use h to collapse a folder if opened or go to the parent node if collapsed. So I try to implement this in my nvim like this:

        local node = api.tree.get_node_under_cursor()
        if node == nil then
            return
        end
        if vim.fn.isdirectory(node.absolute_path) == 1 then
            -- there should be an API to get the status of the directory node
            if node is not opened then
                api.node.navigate.parent(node)
            else
                api.node.open.edit(node)
            end
        end

I've checked the exposed APIs and not found any related APIs.

Solution

I've checked the source code directory.lua, may expose a new API returning the value of self:last_group_node().open in the file.

[Kaiser-Yang]

I've found that the node.open can get value:

    function NodeCollapse()
        local node = api.tree.get_node_under_cursor()
        if node == nil then
            return
        end
        if vim.fn.isdirectory(node.absolute_path) == 1 then
            if not node.open then
                api.node.navigate.parent(node)
            else
                api.node.open.edit(node)
            end
        else
            api.node.navigate.parent(node)
        end
    end