feat: add 'update_on_cursor_moved' option to preview window (#250)

doc/oil.txt

@@ -134,6 +134,8 @@ OPTIONS                                                              *oil-option
         win_options = {
           winblend = 0,
         },
+        -- Whether the preview window is automatically updated when the cursor is moved
+        update_on_cursor_moved = true,
       },
       -- Configuration for the floating progress window
       progress = {

lua/oil/config.lua

@@ -120,6 +120,8 @@ local default_config = {
     win_options = {
       winblend = 0,
     },
+    -- Whether the preview window is automatically updated when the cursor is moved
+    update_on_cursor_moved = true,
   },
   -- Configuration for the floating progress window
   progress = {

lua/oil/view.lua

@@ -364,6 +364,7 @@ M.initialize = function(bufnr)
         end
       end
 
+      if config.preview.update_on_cursor_moved then
         -- Debounce and update the preview window
         if timer then
           timer:again()
@@ -392,6 +393,7 @@ M.initialize = function(bufnr)
             end
           end)
         end)
+      end
     end,
   })