Fix: move NERDTree workarounds to a plugin

1 files changed, 55 insertions, 0 deletions

diff --git a/vim.dot.link/plugin/nerdtree_workarounds.vim b/vim.dot.link/plugin/nerdtree_workarounds.vim
new file mode 100644
index 0000000..d0d682e
--- /dev/null
+++ b/vim.dot.link/plugin/nerdtree_workarounds.vim
@@ -0,0 +1,55 @@
+" nedtree_workaroungs.vim - NERDTree and session restoration workarounds
+"
+" Author: Silvio Rhatto <rhatto@riseup.net>
+"
+
+" Ensure the window has maximized height
+"
+" This helps restoring the window size after reopening sessions after
+" switching monitors (like from laptop screen to external HDMI monitor).
+"
+" https://superuser.com/questions/140419/how-to-start-gvim-maximized
+" https://vim.fandom.com/wiki/Maximize_or_set_initial_window_size
+set lines=999
+
+" Fix NERDTree width
+"
+" Useful after restoring sessions between screen size changes (such
+" as when you share sessions between different computers).
+function FixNERDTreeWidth()
+  " Make sure NERDTree is focuses
+  execute ":NERDTreeFocus"
+
+  " Set a fixed width
+  execute ":vertical resize 30"
+
+  " Move to the left pane
+  wincmd l
+endfunction
+
+" In case you want to invoke FixNERDTreeWidth explicitly
+command! -bang FixNERDTreeWidth :call FixNERDTreeWidth()
+
+" Fix NERDTree width on all tabs
+function FixAllNERDTreeWidths()
+  " Save the last active window
+  let l:current_win = win_getid()
+
+  tabdo :call FixNERDTreeWidth()
+
+  " Restore the active window
+  call win_gotoid(l:current_win)
+
+  " An additional, last move to the left pane
+  wincmd l
+endfunction
+
+" Fix all NERDTree widths afert session load
+augroup workaround
+  autocmd!
+  " This tends to fire for every buffers
+  "autocmd workaround SessionLoadPost * call FixAllNERDTreeWidths()
+
+  " This seems to fire only once
+  autocmd workaround VimEnter * call FixAllNERDTreeWidths()
+augroup END