feat(ui): auto-resize input win height

README.md

@@ -200,7 +200,6 @@ require('opencode').setup({
     input_position = 'bottom', -- 'bottom' (default) or 'top'. Position of the input window
     window_width = 0.40, -- Width as percentage of editor width
     zoom_width = 0.8, -- Zoom width as percentage of editor width
-    input_height = 0.15, -- Input height as percentage of window height
     display_model = true, -- Display model name on top winbar
     display_context_size = true, -- Display context size in the footer
     display_cost = true, -- Display cost in the footer
@@ -220,9 +219,13 @@ require('opencode').setup({
       },
     },
     input = {
+      min_height = 0.10, -- min height of prompt input as percentage of window height
+      max_height = 0.25, -- max height of prompt input as percentage of window height
       text = {
         wrap = false, -- Wraps text inside input window
       },
+      -- Auto-hide input window when prompt is submitted or focus switches to output window
+      auto_hide = false,
     },
     picker = {
       snacks_layout = nil -- `layout` opts to pass to Snacks.picker.pick({ layout = ... })

lua/opencode/config.lua

@@ -110,7 +110,6 @@ M.defaults = {
     input_position = 'bottom',
     window_width = 0.40,
     zoom_width = 0.8,
-    input_height = 0.15,
     picker_width = 100,
     display_model = true,
     display_context_size = true,
@@ -137,6 +136,8 @@ M.defaults = {
       always_scroll_to_bottom = false,
     },
     input = {
+      min_height = 0.10,
+      max_height = 0.25,
       text = {
         wrap = false,
       },

lua/opencode/health.lua

@@ -133,13 +133,38 @@ local function check_configuration()
     health.ok(string.format('Window width: %s', config.ui.window_width))
   end
 
-  if config.ui.input_height <= 0 or config.ui.input_height > 1 then
+  local min_height = config.ui.input.min_height
+  local max_height = config.ui.input.max_height
+  if type(min_height) ~= 'number' or type(max_height) ~= 'number' then
     health.warn(
-      string.format('Invalid input height: %s', config.ui.input_height),
-      { 'Input height should be between 0 and 1 (percentage of screen)' }
+      'Input min/max height configuration incomplete',
+      { 'Set both ui.input.min_height and ui.input.max_height to enable auto-resize' }
     )
   else
-    health.ok(string.format('Input height: %s', config.ui.input_height))
+    if min_height <= 0 or min_height > 1 then
+      health.warn(
+        string.format('Invalid input min height: %s', min_height),
+        { 'Input min height should be between 0 and 1 (percentage of screen)' }
+      )
+    else
+      health.ok(string.format('Input min height: %s', min_height))
+    end
+
+    if max_height <= 0 or max_height > 1 then
+      health.warn(
+        string.format('Invalid input max height: %s', max_height),
+        { 'Input max height should be between 0 and 1 (percentage of screen)' }
+      )
+    else
+      health.ok(string.format('Input max height: %s', max_height))
+    end
+
+    if min_height > max_height then
+      health.warn(
+        'Input min height exceeds max height',
+        { 'Ensure ui.input.min_height is less than or equal to ui.input.max_height' }
+      )
+    end
   end
 
   health.ok('Configuration loaded successfully')

lua/opencode/types.lua

@@ -116,7 +116,6 @@
 ---@field input_position 'bottom'|'top' # Position of the input window (default: 'bottom')
 ---@field window_width number
 ---@field zoom_width number
----@field input_height number
 ---@field picker_width number|nil # Default width for all pickers (nil uses current window width)
 ---@field display_model boolean
 ---@field display_context_size boolean
@@ -125,11 +124,17 @@
 ---@field icons { preset: 'text'|'nerdfonts', overrides: table<string,string> }
 ---@field loading_animation OpencodeLoadingAnimationConfig
 ---@field output OpencodeUIOutputConfig
----@field input { text: { wrap: boolean } }
+---@field input OpencodeUIInputConfig
 ---@field completion OpencodeCompletionConfig
 ---@field highlights? OpencodeHighlightConfig
 ---@field picker OpencodeUIPickerConfig
 
+---@class OpencodeUIInputConfig
+---@field text { wrap: boolean }
+---@field min_height number
+---@field max_height number
+---@field auto_hide boolean
+
 ---@class OpencodeHighlightConfig
 ---@field vertical_borders? { tool?: { fg?: string, bg?: string }, user?: { fg?: string, bg?: string }, assistant?: { fg?: string, bg?: string } }
 

lua/opencode/ui/input_window.lua

@@ -6,6 +6,54 @@ local M = {}
 M._hidden = false
 -- Flag to prevent WinClosed autocmd from closing all windows during toggle
 M._toggling = false
+M._resize_scheduled = false
+
+local function get_content_height(windows)
+  local line_count = vim.api.nvim_buf_line_count(windows.input_buf)
+  if line_count <= 0 then
+    return 1
+  end
+  if config.ui.input.text.wrap then
+    local ok, result = pcall(vim.api.nvim_win_text_height, windows.input_win, {
+      start_row = 0,
+      end_row = math.max(0, line_count - 1),
+    })
+    if ok and result and result.all then
+      return result.all
+    end
+  end
+
+  return line_count
+end
+
+local function get_winbar_height(windows)
+  local ok, winbar = pcall(vim.api.nvim_get_option_value, 'winbar', { win = windows.input_win })
+  if ok and type(winbar) == 'string' and winbar ~= '' then
+    return 1
+  end
+
+  return 0
+end
+
+local function calculate_height(windows)
+  local total_height = vim.api.nvim_get_option_value('lines', {})
+  local min_height = math.max(1, math.floor(total_height * config.ui.input.min_height))
+  local max_height = math.max(min_height, math.floor(total_height * config.ui.input.max_height))
+  local content_height = get_content_height(windows) + get_winbar_height(windows)
+  return math.min(max_height, math.max(min_height, content_height))
+end
+
+local function apply_dimensions(windows, height)
+  if config.ui.position == 'current' then
+    pcall(vim.api.nvim_win_set_height, windows.input_win, height)
+    return
+  end
+
+  local total_width = vim.api.nvim_get_option_value('columns', {})
+  local width = math.floor(total_width * config.ui.window_width)
+
+  vim.api.nvim_win_set_config(windows.input_win, { width = width, height = height })
+end
 
 function M.create_buf()
   local input_buf = vim.api.nvim_create_buf(false, true)
@@ -226,18 +274,23 @@ function M.update_dimensions(windows)
     return
   end
 
-  local total_height = vim.api.nvim_get_option_value('lines', {})
-  local height = math.floor(total_height * config.ui.input_height)
+  local height = calculate_height(windows)
+  apply_dimensions(windows, height)
+end
 
-  if config.ui.position == 'current' then
-    pcall(vim.api.nvim_win_set_height, windows.input_win, height)
+function M.schedule_resize(windows)
+  windows = windows or state.windows
+  if not M.mounted(windows) or M._resize_scheduled then
     return
   end
 
-  local total_width = vim.api.nvim_get_option_value('columns', {})
-  local width = math.floor(total_width * config.ui.window_width)
-
-  vim.api.nvim_win_set_config(windows.input_win, { width = width, height = height })
+  M._resize_scheduled = true
+  vim.schedule(function()
+    M._resize_scheduled = false
+    if M.mounted(windows) then
+      M.update_dimensions(windows)
+    end
+  end)
 end
 
 function M.refresh_placeholder(windows, input_lines)
@@ -289,6 +342,7 @@ end
 function M.recover_input(windows)
   M.set_content(state.input_content, windows)
   require('opencode.ui.mention').highlight_all_mentions(windows.input_buf)
+  M.update_dimensions(windows)
 end
 
 function M.focus_input()
@@ -413,6 +467,7 @@ function M.setup_autocmds(windows, group)
       state.input_content = input_lines
       M.refresh_placeholder(windows, input_lines)
       require('opencode.ui.context_bar').render()
+      M.schedule_resize(windows)
     end,
   })
 end