feat: add filter for unfocusable windows (#90)

Fixes #67.
Fixes #86.

Author: 9ary

README.md

@@ -123,6 +123,9 @@ require 'window-picker'.setup({
         -- selection or not
         include_current_win = false,
 
+        -- whether to include windows marked as unfocusable
+        include_unfocusable_windows = false,
+
         -- filter using buffer options
         bo = {
             -- if the file type is one of following, the window will be ignored

lua/window-picker/config.lua

@@ -67,6 +67,9 @@ local config = {
 		-- selection or not
 		include_current_win = false,
 
+		-- whether to include windows marked as unfocusable
+		include_unfocusable_windows = false,
+
 		-- filter using buffer options
 		bo = {
 			-- if the file type is one of following, the window will be ignored

lua/window-picker/filters/default-window-filter.lua

@@ -20,6 +20,7 @@ function M:new()
 		o._file_path_contains_filter,
 		o._file_path_contains_filter,
 		o._current_window_filter,
+		o._unfocusable_windows_filter,
 	}
 
 	return o
@@ -31,6 +32,7 @@ function M:set_config(config)
 	self.file_name_contains = config.file_name_contains or {}
 	self.file_path_contains = config.file_path_contains or {}
 	self.include_current_win = config.include_current_win
+	self.include_unfocusable_windows = config.include_unfocusable_windows
 end
 
 function M:filter_windows(windows)
@@ -150,4 +152,15 @@ function M:_current_window_filter(windows)
 	end)
 end
 
+function M:_unfocusable_windows_filter(windows)
+	if self.include_unfocusable_windows then
+		return windows
+	end
+
+	return util.tbl_filter(windows, function(winid)
+		local cfg = vim.api.nvim_win_get_config(winid)
+		return cfg.focusable
+	end)
+end
+
 return M