feat: make floating windows resize on VimResized event, closes #438

Author: cseickel

lua/neo-tree/events/init.lua

@@ -33,6 +33,7 @@ local M = {
   VIM_WIN_CLOSED = "vim_win_closed",
   VIM_COLORSCHEME = "vim_colorscheme",
   VIM_LEAVE = "vim_leave",
+  VIM_RESIZED = "vim_resized",
 }
 
 M.define_autocmd_event = function(event_name, autocmds, debounce_frequency, seed_fn, nested)

lua/neo-tree/setup/init.lua

@@ -72,6 +72,7 @@ local define_events = function()
   events.define_autocmd_event(events.VIM_DIR_CHANGED, { "DirChanged" }, 200, nil, true)
   events.define_autocmd_event(events.VIM_TAB_CLOSED, { "TabClosed" })
   events.define_autocmd_event(events.VIM_LEAVE, { "VimLeavePre" })
+  events.define_autocmd_event(events.VIM_RESIZED, { "VimResized" }, 100)
   events.define_autocmd_event(events.VIM_WIN_CLOSED, { "WinClosed" })
   events.define_autocmd_event(events.VIM_COLORSCHEME, { "ColorScheme" }, 0)
   events.define_autocmd_event(events.GIT_EVENT, { "User FugitiveChanged" }, 100)
@@ -84,6 +85,13 @@ local define_events = function()
       events.clear_all_events()
     end,
   })
+
+  events.subscribe({
+    event = events.VIM_RESIZED,
+    handler = function()
+      require("neo-tree.ui.renderer").update_floating_window_layouts()
+    end,
+  })
 end
 
 local last_buffer_enter_filetype = nil

lua/neo-tree/ui/renderer.lua

@@ -13,6 +13,7 @@ local log = require("neo-tree.log")
 
 local M = { resize_timer_interval = 50 }
 local ESC_KEY = vim.api.nvim_replace_termcodes("<ESC>", true, false, true)
+local default_popup_size = { width = 60, height = "80%" }
 local floating_windows = {}
 local draw, create_window, create_tree
 
@@ -737,17 +738,17 @@ create_window = function(state)
     win_options = popups.popup_options("Neo-tree " .. sourceTitle, 40, win_options)
     win_options.win_options = nil
     win_options.zindex = 40
-    local size = { width = 60, height = "80%" }
 
     -- Then override with source specific options.
     local b = win_options.border
-    win_options.size = utils.resolve_config_option(state, "window.popup.size", size)
+    win_options.size = utils.resolve_config_option(state, "window.popup.size", default_popup_size)
     win_options.position = utils.resolve_config_option(state, "window.popup.position", "50%")
     win_options.border = utils.resolve_config_option(state, "window.popup.border", b)
 
     win = NuiPopup(win_options)
     win:mount()
     win.source_name = state.name
+    win.original_options = state.window
     table.insert(floating_windows, win)
 
     if require("neo-tree").config.close_floats_on_escape_key then
@@ -822,6 +823,17 @@ create_window = function(state)
   return win
 end
 
+M.update_floating_window_layouts = function()
+  for _, win in ipairs(floating_windows) do
+    local opt = {
+      relative = "win",
+    }
+    opt.size = utils.resolve_config_option(win.original_options, "popup.size", default_popup_size)
+    opt.position = utils.resolve_config_option(win.original_options, "popup.position", "50%")
+    win:update_layout(opt)
+  end
+end
+
 ---Determines is the givin winid is valid and the window still exists.
 ---@param winid any
 ---@return boolean