feat: add editor command DashboardUpdateFooter (#444)

README.md

@@ -132,6 +132,7 @@ dashboard will use default highlight group like `DashboardKey/Icon/Desc` instead
 
 - `Dashboard` open dashboard
 - `DbProjectDelete count` delete project in cache works for hyper theme. count is number
+- `DashboardUpdateFooter` updates the content of the Footer
 
 ### Highlight
 

lua/dashboard/theme/doom.lua

@@ -193,6 +193,8 @@ local function generate_footer(config)
   for i = 1, #footer do
     api.nvim_buf_add_highlight(config.bufnr, 0, 'DashboardFooter', first_line + i - 1, 0, -1)
   end
+
+  utils.add_update_footer_command(config.bufnr, footer)
 end
 
 ---@private

lua/dashboard/theme/hyper.lua

@@ -460,6 +460,8 @@ local function gen_footer(config)
   for i, _ in pairs(footer) do
     api.nvim_buf_add_highlight(config.bufnr, 0, 'DashboardFooter', first_line + i - 1, 0, -1)
   end
+
+  utils.add_update_footer_command(config.bufnr, footer)
 end
 
 local function project_delete()

lua/dashboard/utils.lua

@@ -172,4 +172,25 @@ function utils.buf_is_empty(bufnr)
     and vim.api.nvim_buf_get_lines(0, 0, -1, false)[1] == ''
 end
 
+local last_footer_size = nil
+function utils.add_update_footer_command(bufnr, footer)
+  vim.api.nvim_create_user_command('DashboardUpdateFooter', function(args)
+    if last_footer_size == nil then
+      last_footer_size = #footer
+    end
+
+    local first_line = vim.api.nvim_buf_line_count(bufnr)
+    vim.api.nvim_buf_set_lines(
+      bufnr,
+      first_line - last_footer_size,
+      -1,
+      false,
+      utils.center_align(args.fargs)
+    )
+    vim.bo[bufnr].modified = false
+
+    last_footer_size = #args.fargs -- For future calculation of size
+  end, { nargs = '*' })
+end
+
 return utils