feat: element specific mappings

See #158

README.md

@@ -60,6 +60,14 @@ require("dapui").setup({
     repl = "r",
     toggle = "t",
   },
+  -- Use this to override mappings for specific elements
+  element_mappings = {
+    -- Example:
+    -- stacks = {
+    --   open = "<CR>",
+    --   expand = "o",
+    -- }
+  },
   -- Expand lines larger than the window
   -- Requires >= 0.7
   expand_lines = vim.fn.has("nvim-0.7") == 1,

lua/dapui/config/init.lua

@@ -34,6 +34,7 @@ local default_config = {
     [M.actions.REPL] = "r",
     [M.actions.TOGGLE] = "t",
   },
+  element_mappings = {},
   expand_lines = vim.fn.has("nvim-0.7") == 1,
   layouts = {
     {
@@ -171,6 +172,13 @@ require('dapui').setup(
     filled.layouts = config.layouts
   end
   filled.mappings = fill_mappings(filled.mappings)
+
+  local element_mappings = {}
+  for elem, mappings in pairs(filled.element_mappings) do
+    element_mappings[elem] = fill_mappings(mappings)
+  end
+
+  filled.element_mappings = element_mappings
   filled.floating.mappings = fill_mappings(filled.floating.mappings)
   for i, layout in ipairs(filled.layouts) do
     filled.layouts[i] = fill_elements(layout)
@@ -216,6 +224,11 @@ function M.expand_lines()
   return user_config.expand_lines
 end
 
+function M.element_mapping(element, action)
+  return (user_config.element_mappings[element] and user_config.element_mappings[element][action])
+    or user_config.mappings[action]
+end
+
 setmetatable(M, {
   __index = function(_, key)
     return user_config[key]

lua/dapui/render/canvas.lua

@@ -138,7 +138,7 @@ end
 ---Apply a render.canvas to a buffer
 ---@param state dapui.Canvas
 ---@param buffer number
-function M.render_buffer(state, buffer)
+function M.render_buffer(state, buffer, element)
   local success, _ = pcall(api.nvim_buf_set_option, buffer, "modifiable", true)
   if not success then
     return false
@@ -151,7 +151,7 @@ function M.render_buffer(state, buffer)
   _mappings[buffer] = state.mappings
   for action, _ in pairs(state.mappings) do
     util.apply_mapping(
-      config.mappings()[action],
+      config.element_mapping(element, action),
       "<cmd>lua require('dapui.render.canvas')._mapping('" .. action .. "')<CR>",
       buffer
     )

lua/dapui/render/loop.lua

@@ -95,14 +95,15 @@ end
 function M.run(element_names)
   element_names = get_elements(element_names)
   for _, elem_name in pairs(element_names) do
+    local elem_id = string.gsub(string.lower(elem_name), "dap ", "")
     local canvas_state = canvas_states[elem_name]
     if not vim.tbl_isempty(canvas_state.buffers) then
       local canvas = Canvas.new()
       canvas:set_expand_lines(config.expand_lines())
       canvas_state.element.render(canvas)
       if canvas.valid then
         for _, buf in pairs(canvas_state.buffers) do
-          local rendered = Canvas.render_buffer(canvas, buf)
+          local rendered = Canvas.render_buffer(canvas, buf, elem_id)
           if rendered then
             for _, listener in pairs(canvas_state.listeners[M.EVENTS.RENDER] or {}) do
               listener(buf, canvas)