From 12bea0f6466661b89a6293c090a415ad7a32d4c8 Mon Sep 17 00:00:00 2001
From: Steven Arcangeli <stevearc@stevearc.com>
Date: Sun, 12 Mar 2023 12:48:59 -0700
Subject: [PATCH] feat: API to change config.view.is_hidden_file at runtime
 (#69)

---
 README.md        | 15 +++++++++++++++
 doc/oil.txt      | 11 +++++++++++
 doc/tags         |  2 ++
 lua/oil/init.lua | 11 +++++++++++
 lua/oil/view.lua | 20 ++++++++++++++------
 5 files changed, 53 insertions(+), 6 deletions(-)

diff --git a/README.md b/README.md
index 71f12b0..b3bf707 100644
--- a/README.md
+++ b/README.md
@@ -234,6 +234,21 @@ Change the display columns for oil
 | ----- | ------------------ | ---- |
 | cols  | `oil.ColumnSpec[]` |      |
 
+### set_is_hidden_file(is_hidden_file)
+
+`set_is_hidden_file(is_hidden_file)` \
+Change how oil determines if the file is hidden
+
+| Param          | Type                                                  | Desc                                         |
+| -------------- | ----------------------------------------------------- | -------------------------------------------- |
+| is_hidden_file | `fun(filename: string, bufnr: nil\|integer): boolean` | Return true if the file/dir should be hidden |
+
+### toggle_hidden()
+
+`toggle_hidden()` \
+Toggle hidden files and directories
+
+
 ### get_current_dir()
 
 `get_current_dir(): nil|string` \
diff --git a/doc/oil.txt b/doc/oil.txt
index b995f3a..dc2f8e2 100644
--- a/doc/oil.txt
+++ b/doc/oil.txt
@@ -110,6 +110,17 @@ set_columns({cols})                                              *oil.set_column
     Parameters:
       {cols} `oil.ColumnSpec[]`
 
+set_is_hidden_file({is_hidden_file})                      *oil.set_is_hidden_file*
+    Change how oil determines if the file is hidden
+
+    Parameters:
+      {is_hidden_file} `fun(filename: string, bufnr: nil|integer): boolean` Retu
+                       rn true if the file/dir should be hidden
+
+toggle_hidden()                                                *oil.toggle_hidden*
+    Toggle hidden files and directories
+
+
 get_current_dir(): nil|string                                *oil.get_current_dir*
     Get the current directory
 
diff --git a/doc/tags b/doc/tags
index 15908ba..6ef51f2 100644
--- a/doc/tags
+++ b/doc/tags
@@ -53,5 +53,7 @@ oil.open_float	oil.txt	/*oil.open_float*
 oil.save	oil.txt	/*oil.save*
 oil.select	oil.txt	/*oil.select*
 oil.set_columns	oil.txt	/*oil.set_columns*
+oil.set_is_hidden_file	oil.txt	/*oil.set_is_hidden_file*
 oil.setup	oil.txt	/*oil.setup*
+oil.toggle_hidden	oil.txt	/*oil.toggle_hidden*
 oil.txt	oil.txt	/*oil.txt*
diff --git a/lua/oil/init.lua b/lua/oil/init.lua
index f870b2c..2129ade 100644
--- a/lua/oil/init.lua
+++ b/lua/oil/init.lua
@@ -135,6 +135,17 @@ M.set_columns = function(cols)
   require("oil.view").set_columns(cols)
 end
 
+---Change how oil determines if the file is hidden
+---@param is_hidden_file fun(filename: string, bufnr: nil|integer): boolean Return true if the file/dir should be hidden
+M.set_is_hidden_file = function(is_hidden_file)
+  require("oil.view").set_is_hidden_file(is_hidden_file)
+end
+
+---Toggle hidden files and directories
+M.toggle_hidden = function()
+  require("oil.view").toggle_hidden()
+end
+
 ---Get the current directory
 ---@return nil|string
 M.get_current_dir = function()
diff --git a/lua/oil/view.lua b/lua/oil/view.lua
index 13ba336..273088d 100644
--- a/lua/oil/view.lua
+++ b/lua/oil/view.lua
@@ -53,8 +53,7 @@ M.get_last_cursor = function(bufname)
 end
 
 local function are_any_modified()
-  local view = require("oil.view")
-  local buffers = view.get_all_buffers()
+  local buffers = M.get_all_buffers()
   for _, bufnr in ipairs(buffers) do
     if vim.bo[bufnr].modified then
       return true
@@ -64,25 +63,34 @@ local function are_any_modified()
 end
 
 M.toggle_hidden = function()
-  local view = require("oil.view")
   local any_modified = are_any_modified()
   if any_modified then
     vim.notify("Cannot toggle hidden files when you have unsaved changes", vim.log.levels.WARN)
   else
     config.view_options.show_hidden = not config.view_options.show_hidden
-    view.rerender_all_oil_buffers({ refetch = false })
+    M.rerender_all_oil_buffers({ refetch = false })
+  end
+end
+
+---@param is_hidden_file fun(filename: string, bufnr: nil|integer): boolean
+M.set_is_hidden_file = function(is_hidden_file)
+  local any_modified = are_any_modified()
+  if any_modified then
+    vim.notify("Cannot change is_hidden_file when you have unsaved changes", vim.log.levels.WARN)
+  else
+    config.view_options.is_hidden_file = is_hidden_file
+    M.rerender_all_oil_buffers({ refetch = false })
   end
 end
 
 M.set_columns = function(cols)
-  local view = require("oil.view")
   local any_modified = are_any_modified()
   if any_modified then
     vim.notify("Cannot change columns when you have unsaved changes", vim.log.levels.WARN)
   else
     config.columns = cols
     -- TODO only refetch if we don't have all the necessary data for the columns
-    view.rerender_all_oil_buffers({ refetch = true })
+    M.rerender_all_oil_buffers({ refetch = true })
   end
 end