Changing toggle behavior to move the tree if needed

Author: Neko-Box-Coder

README.md

@@ -95,7 +95,7 @@ any of the operations/commands, bind to the labeled API in the table below.
 
 | Command  | Keybinding(s)              | What it does                                                                                | API for `bindings.json`               |
 | :------- | :------------------------- | :------------------------------------------------------------------------------------------ | :------------------------------------ |
-| `tree`   | -                          | Open/close the tree                                                                         | `filemanager2.toggle_tree`             |
+| `tree`   | -                          | Open/close the tree, or moves to the tree to current tab if opened in different tab         | `filemanager2.toggle_tree`             |
 | -        | <kbd>Tab</kbd> & MouseLeft | Open a file, or go into the directory. Goes back a dir if on `..`                           | `filemanager2.try_open_at_cursor`      |
 | -        | <kbd>→</kbd>               | Expand directory in tree listing                                                            | `filemanager2.uncompress_at_cursor`    |
 | -        | <kbd>←</kbd>               | Collapse directory listing                                                                  | `filemanager2.compress_at_cursor`      |

filemanager2.lua

@@ -1044,11 +1044,18 @@ local function close_tree()
 end
 
 -- toggle_tree will toggle the tree view visible (create) and hide (delete).
-function toggle_tree()
+function toggle_tree(bp)
     if tree_view == nil then
         open_tree()
     else
-        close_tree()
+        -- If the file tree share the same tab, close the tree, 
+        -- otherwise just move the tree to current tab
+        if bp:Tab() == tree_view:Tab() then
+            close_tree()
+        else
+            close_tree()
+            open_tree()
+        end
     end
 end