Class: Clacky::UI2::UIController

Inherits:
Object
  • Object
show all
Includes:
Clacky::UIInterface
Defined in:
lib/clacky/ui2/ui_controller.rb

Overview

UIController is the MVC controller layer that coordinates UI state and user interactions

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(config = {}) ⇒ UIController

Returns a new instance of UIController.



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# File 'lib/clacky/ui2/ui_controller.rb', line 21

def initialize(config = {})
  @renderer = ViewRenderer.new

  # Set theme if specified
  ThemeManager.set_theme(config[:theme]) if config[:theme]

  # Store configuration
  @config = {
    working_dir: config[:working_dir],
    mode: config[:mode],
    model: config[:model],
    theme: config[:theme]
  }

  # Initialize layout components
  @input_area = Components::InputArea.new
  @todo_area = Components::TodoArea.new
  @welcome_banner = Components::WelcomeBanner.new
  @inline_input = nil  # Created when needed
  @layout = LayoutManager.new(
    input_area: @input_area,
    todo_area: @todo_area
  )

  @running = false
  @input_callback = nil
  @interrupt_callback = nil
  @time_machine_callback = nil
  @tasks_count = 0
  @total_cost = 0.0
  @progress_thread = nil
  @progress_start_time = nil
  @progress_message = nil
  @last_diff_lines = nil
end

Instance Attribute Details

#config ⇒ Object

Returns the value of attribute config.



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# File 'lib/clacky/ui2/ui_controller.rb', line 19

def config
  @config
end

#inline_input ⇒ Object (readonly)

Returns the value of attribute inline_input.



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# File 'lib/clacky/ui2/ui_controller.rb', line 18

def inline_input
  @inline_input
end

#input_area ⇒ Object (readonly)

Returns the value of attribute input_area.



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# File 'lib/clacky/ui2/ui_controller.rb', line 18

def input_area
  @input_area
end

#layout ⇒ Object (readonly)

Returns the value of attribute layout.



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# File 'lib/clacky/ui2/ui_controller.rb', line 18

def layout
  @layout
end

#renderer ⇒ Object (readonly)

Returns the value of attribute renderer.



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# File 'lib/clacky/ui2/ui_controller.rb', line 18

def renderer
  @renderer
end

#running ⇒ Object (readonly)

Returns the value of attribute running.



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# File 'lib/clacky/ui2/ui_controller.rb', line 18

def running
  @running
end

Instance Method Details

#append_output(content) ⇒ Object

Append output to the output area

Parameters:

  • content (String) —

    Content to append



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# File 'lib/clacky/ui2/ui_controller.rb', line 189

def append_output(content)
  @layout.append_output(content)
end

#clear_input ⇒ Object

Clear the input area



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# File 'lib/clacky/ui2/ui_controller.rb', line 145

def clear_input
  @input_area.clear
end

#clear_progress ⇒ Object

Clear progress indicator



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# File 'lib/clacky/ui2/ui_controller.rb', line 522

def clear_progress
  # Guard: if no progress is active, do nothing.
  # This makes clear_progress idempotent — safe to call multiple times
  # (e.g. once from handle_submit and again from handle_agent_exception).
  return unless progress_active?

  # Calculate elapsed time before stopping
  elapsed_time = @progress_start_time ? (Time.now - @progress_start_time).to_i : 0

  # Stop the progress thread (blocks until thread exits or timeout)
  stop_progress_thread

  # stdout buffer no longer needed after command finishes
  @stdout_lines = nil

  # Update the final progress line to gray (stopped state)
  if @progress_message && elapsed_time > 0
    final_output = @renderer.render_progress("#{@progress_message}… (#{elapsed_time}s)")
    update_progress_line(final_output)
  else
    clear_progress_line
  end
end

#clear_progress_line ⇒ Object

Clear the progress line (remove last line)



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# File 'lib/clacky/ui2/ui_controller.rb', line 227

def clear_progress_line
  @layout.remove_last_line
end

#clear_progress_nonblocking ⇒ Object

Non-blocking variant of clear_progress, used by handle_submit so the user message appears on screen immediately without waiting for the progress thread to fully exit.

Strategy:

1. Snapshot elapsed time and message before touching any state.
2. Signal the progress thread to stop (sets flag + nulls start time)
   so it will exit on its own next wake-up — no join here.
3. Immediately render the final (gray) progress line or remove it.
4. The thread finishes in the background; clear_progress called later
   via the interrupt path is idempotent and will be a no-op.



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# File 'lib/clacky/ui2/ui_controller.rb', line 557

def clear_progress_nonblocking
  return unless progress_active?

  elapsed_time = @progress_start_time ? (Time.now - @progress_start_time).to_i : 0
  saved_message = @progress_message

  # Signal thread to stop without joining — it will exit on next loop tick
  @progress_start_time = nil
  @progress_output_buffer = nil
  @stdout_lines = nil
  @progress_thread_stop = true
  # Detach: let the thread die on its own; we do NOT join here
  @progress_thread = nil

  # Immediately update the visual progress line (no waiting)
  if saved_message && elapsed_time > 0
    final_output = @renderer.render_progress("#{saved_message}… (#{elapsed_time}s)")
    update_progress_line(final_output)
  else
    clear_progress_line
  end
end

#display_session_history(user_messages) ⇒ Object

Display recent user messages when loading session

Parameters:

  • user_messages (Array<String>) —

    Array of recent user message texts



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# File 'lib/clacky/ui2/ui_controller.rb', line 911

def display_session_history(user_messages)
  theme = ThemeManager.current_theme

  # Show logo banner only
  append_output(@welcome_banner.(width: @layout.screen.width))

  # Show simple header
  append_output(theme.format_text("Recent conversation:", :info))

  # Display each user message with numbering
  user_messages.each_with_index do |msg, index|
    # Truncate long messages
    display_msg = if msg.length > 140
      "#{msg[0..137]}..."
    else
      msg
    end

    # Show with number and indentation
    append_output("  #{index + 1}. #{display_msg}")
  end

  # Bottom spacing and continuation prompt
  append_output("")
  append_output(theme.format_text("Session restored. Feel free to continue with your next task.", :success))
end

#display_welcome_banner ⇒ Object

Display welcome banner with logo and agent info



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# File 'lib/clacky/ui2/ui_controller.rb', line 886

def display_welcome_banner
  content = @welcome_banner.render_full(
    working_dir: @config[:working_dir],
    mode: @config[:mode],
    width: @layout.screen.width
  )
  append_output(content)

  # Check if API key is configured (show warning AFTER banner)
  check_api_key_configuration
end

#filter_thinking_tags(content) ⇒ String

Filter out thinking tags from content Some models (e.g., MiniMax M2.1) wrap their reasoning in <think>…</think> tags

Parameters:

  • content (String) —

    Raw content from model

Returns:

  • (String) —

    Content with thinking tags removed



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# File 'lib/clacky/ui2/ui_controller.rb', line 379

def filter_thinking_tags(content)
  return content if content.nil?

  # Remove <think>...</think> blocks (multiline, case-insensitive)
  # Also handles variations like <thinking>...</thinking>
  filtered = content.gsub(%r{<think(?:ing)?>[\s\S]*?</think(?:ing)?>}mi, '')

  # Clean up multiple empty lines left behind (max 2 consecutive newlines)
  filtered.gsub!(/\n{3,}/, "\n\n")

  # Remove leading and trailing whitespace
  filtered.strip
end

#format_tool_call(name, args) ⇒ String

Format tool call for display

Parameters:

  • name (String) —

    Tool name

  • args (String, Hash) —

    Tool arguments

Returns:

  • (String) —

    Formatted call string



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# File 'lib/clacky/ui2/ui_controller.rb', line 848

def format_tool_call(name, args)
  args_hash = args.is_a?(String) ? JSON.parse(args, symbolize_names: true) : args

  # Try to get tool instance for custom formatting
  tool = get_tool_instance(name)
  if tool
    begin
      return tool.format_call(args_hash)
    rescue StandardError
      # Fallback
    end
  end

  # Simple fallback
  "#{name}(...)"
rescue JSON::ParserError
  "#{name}(...)"
end

#get_tool_instance(tool_name) ⇒ Object?

Get tool instance by name

Parameters:

  • tool_name (String) —

    Tool name

Returns:

  • (Object, nil) —

    Tool instance or nil



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# File 'lib/clacky/ui2/ui_controller.rb', line 870

def get_tool_instance(tool_name)
  # Convert tool_name to class name (e.g., "file_reader" -> "FileReader")
  class_name = tool_name.split('_').map(&:capitalize).join

  # Try to find the class in Clacky::Tools namespace
  if Clacky::Tools.const_defined?(class_name)
    tool_class = Clacky::Tools.const_get(class_name)
    tool_class.new
  else
    nil
  end
rescue NameError
  nil
end

#handle_inline_input_key(key) ⇒ Object

Handle key input for InlineInput



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# File 'lib/clacky/ui2/ui_controller.rb', line 1038

def handle_inline_input_key(key)
  # Get old line count BEFORE modification
  old_line_count = @inline_input.line_count

  result = @inline_input.handle_key(key)

  case result[:action]
  when :update
    # Update the output area with current input (considering wrapped lines)
    @layout.update_last_line(@inline_input.render, old_line_count)
    # Position cursor for inline input
    @layout.position_inline_input_cursor(@inline_input)
  when :submit, :cancel
    # InlineInput is done, will be cleaned up by request_confirmation after collect returns
    # Don't render anything here - let request_confirmation handle cleanup
    return
  when :toggle_expand
    # If there's command output available, show it; otherwise show diff
    if @stdout_lines && !@stdout_lines.empty?
      show_command_output
    else
      redisplay_diff
    end
  when :toggle_mode
    # Update mode and session bar info, but don't render yet
    current_mode = @config[:mode]
    new_mode = case current_mode.to_s
    when /confirm_safes/
      "auto_approve"
    when /auto_approve/
      "confirm_safes"
    else
      "auto_approve"
    end

    @config[:mode] = new_mode
    @mode_toggle_callback&.call(new_mode)

    # Update session bar data (will be rendered by request_confirmation's render_all)
    @input_area.update_sessionbar(
      working_dir: @config[:working_dir],
      mode: @config[:mode],
      model: @config[:model],
      tasks: @tasks_count,
      cost: @total_cost
    )
  end
end

#handle_key(key) ⇒ Object

Handle keyboard input - delegate to InputArea or InlineInput

Parameters:

  • key (Symbol, String, Hash) —

    Key input or rapid input hash



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# File 'lib/clacky/ui2/ui_controller.rb', line 965

def handle_key(key)
  # If in fullscreen mode, only handle Ctrl+O to exit
  if @layout.fullscreen_mode?
    if key == :ctrl_o
      # Signal the real-time refresh thread to stop gracefully, then join it.
      # Avoid Thread#kill which can interrupt the thread mid-render and
      # leave @render_mutex permanently locked.
      stop_fullscreen_refresh_thread
      @layout.exit_fullscreen
      # Restore main screen content after returning from alternate buffer
      @layout.rerender_all
    end
    return
  end

  # If InlineInput is active, delegate to it
  if @inline_input&.active?
    handle_inline_input_key(key)
    return
  end

  result = @input_area.handle_key(key)

  # Handle height change first
  if result[:height_changed]
    @layout.recalculate_layout
  end

  # Handle actions
  case result[:action]
  when :submit
    handle_submit(result[:data])
  when :exit
    stop
    exit(0)
  when :interrupt
    # Stop progress indicator
    stop_progress_thread

    # Check if input area has content
    input_was_empty = @input_area.empty?

    # Notify CLI to handle interrupt (stop agent or exit)
    @interrupt_callback&.call(input_was_empty: input_was_empty)
  when :clear_output
    # Pass to callback with data for display
    @input_callback&.call("/clear", [], display: result[:data][:display])
  when :scroll_up
    @layout.scroll_output_up
  when :scroll_down
    @layout.scroll_output_down
  when :help
    # Pass to callback with data for display
    @input_callback&.call("/help", [], display: result[:data][:display])
  when :toggle_mode
    toggle_mode
  when :toggle_expand
    # If there's command output available, show it; otherwise show diff
    if @stdout_lines && !@stdout_lines.empty?
      show_command_output
    else
      redisplay_diff
    end
  when :time_machine
    # Trigger time machine callback
    @time_machine_callback&.call
  end

  # Always re-render input area after key handling
  @layout.render_input
end

#initialize_and_show_banner(recent_user_messages: nil) ⇒ Object

Initialize screen and show banner (separate from input loop)

Parameters:

  • recent_user_messages (Array<String>, nil) (defaults to: nil) —

    Recent user messages when loading session



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# File 'lib/clacky/ui2/ui_controller.rb', line 65

def initialize_and_show_banner(recent_user_messages: nil)
  @running = true

  # Set session bar data before initializing screen
  @input_area.update_sessionbar(
    working_dir: @config[:working_dir],
    mode: @config[:mode],
    model: @config[:model],
    tasks: @tasks_count,
    cost: @total_cost
  )

  @layout.initialize_screen

  # Display welcome banner or session history
  if recent_user_messages && !recent_user_messages.empty?
    display_session_history(recent_user_messages)
  else
    display_welcome_banner
  end
end

#input_loop ⇒ Object

Main input loop



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# File 'lib/clacky/ui2/ui_controller.rb', line 939

def input_loop
  @layout.screen.enable_raw_mode

  while @running
    # Process any pending resize events
    @layout.process_pending_resize
    
    key = @layout.screen.read_key(timeout: 0.1)
    next unless key

    handle_key(key)
  end
rescue Clacky::AgentInterrupted
  # Signal.trap("INT") raised AgentInterrupted on the main thread.
  # Route through the normal Ctrl+C path so on_interrupt callback fires
  # (interrupt task thread if running, or exit if idle) instead of quitting blindly.
  handle_key(:ctrl_c)
rescue => e
  stop
  raise e
ensure
  @layout.screen.disable_raw_mode
end

#log(message, level: :info) ⇒ Object

Log message to output area (use instead of puts)

Parameters:

  • message (String) —

    Message to log

  • level (Symbol) (defaults to: :info) —

    Log level (:debug, :info, :warning, :error)



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# File 'lib/clacky/ui2/ui_controller.rb', line 196

def log(message, level: :info)
  theme = ThemeManager.current_theme

  output = case level
  when :debug
    # Gray dimmed text for debug messages
    theme.format_text("    [DEBUG] #{message}", :thinking)
  when :info
    # Info symbol with normal text
    "#{theme.format_symbol(:info)} #{message}"
  when :warning
    # Warning rendering
    @renderer.render_warning(message)
  when :error
    # Error rendering
    @renderer.render_error(message)
  else
    # Default to info
    "#{theme.format_symbol(:info)} #{message}"
  end

  append_output(output)
end

#on_input(&block) ⇒ Object

Set callback for user input

Parameters:

  • block (Proc) —

    Callback to execute with user input



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# File 'lib/clacky/ui2/ui_controller.rb', line 158

def on_input(&block)
  @input_callback = block
end

#on_interrupt(&block) ⇒ Object

Set callback for interrupt (Ctrl+C)

Parameters:

  • block (Proc) —

    Callback to execute on interrupt



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# File 'lib/clacky/ui2/ui_controller.rb', line 164

def on_interrupt(&block)
  @interrupt_callback = block
end

#on_mode_toggle(&block) ⇒ Object

Set callback for mode toggle (Shift+Tab)

Parameters:

  • block (Proc) —

    Callback to execute on mode toggle



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# File 'lib/clacky/ui2/ui_controller.rb', line 170

def on_mode_toggle(&block)
  @mode_toggle_callback = block
end

#on_time_machine(&block) ⇒ Object

Set callback for time machine (ESC key)

Parameters:

  • block (Proc) —

    Callback to execute on time machine



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# File 'lib/clacky/ui2/ui_controller.rb', line 176

def on_time_machine(&block)
  @time_machine_callback = block
end

#progress_active? ⇒ Boolean

Returns true if a progress indicator is currently active. Used to guard calls to clear_progress so we don’t accidentally remove a non-progress line from the output buffer.

Returns:

  • (Boolean) 


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# File 'lib/clacky/ui2/ui_controller.rb', line 517

def progress_active?
  @progress_start_time != nil
end

#request_confirmation(message, default: true) ⇒ Boolean, ...

Request confirmation from user (blocking)

Parameters:

  • message (String) —

    Confirmation prompt

  • default (Boolean) (defaults to: true) —

    Default value if user presses Enter

Returns:

  • (Boolean, String, nil) —

    true/false for yes/no, String for feedback, nil for cancelled



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# File 'lib/clacky/ui2/ui_controller.rb', line 694

def request_confirmation(message, default: true)
  # Show question in output with theme styling
  theme = ThemeManager.current_theme
  question_symbol = theme.format_symbol(:info)
  append_output("#{question_symbol} #{message}")

  # Pause InputArea
  @input_area.pause
  @layout.recalculate_layout

  # Create InlineInput with styled prompt
  inline_input = Components::InlineInput.new(
    prompt: "Press Enter/y to approve(Shift+Tab for all), 'n' to reject, or type feedback: ",
    default: nil
  )
  @inline_input = inline_input

  # Add inline input line to output (use layout to track position)
  @layout.append_output(inline_input.render)
  @layout.position_inline_input_cursor(inline_input)

  # Collect input (blocks until user presses Enter)
  result_text = inline_input.collect

  # Clean up - remove the inline input lines (handle wrapped lines)
  line_count = inline_input.line_count
  @layout.remove_last_line(line_count)

  # Append the final response to output
  if result_text.nil?
    append_output(theme.format_text("  [Cancelled]", :error))
  else
    display_text = result_text.empty? ? (default ? "y" : "n") : result_text
    append_output(theme.format_text("  #{display_text}", :success))
  end

  # Deactivate and clean up
  @inline_input = nil
  @input_area.resume
  @layout.recalculate_layout
  @layout.render_all

  # Parse result
  return nil if result_text.nil?  # Cancelled

  response = result_text.strip.downcase
  case response
  when "y", "yes" then true
  when "n", "no" then false
  when "" then default
  else
    result_text  # Return feedback text
  end
end

#set_agent(agent, agent_profile = nil) ⇒ Object

Set agent for command suggestions

Parameters:

  • agent (Clacky::Agent) —

    The agent instance with skill management

  • agent_profile (Clacky::AgentProfile, nil) (defaults to: nil) —

    Current agent profile for skill filtering



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# File 'lib/clacky/ui2/ui_controller.rb', line 183

def set_agent(agent, agent_profile = nil)
  @input_area.set_agent(agent, agent_profile)
end

#set_idle_status ⇒ Object

Set workspace status to idle (called when agent stops working)



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# File 'lib/clacky/ui2/ui_controller.rb', line 646

def set_idle_status
  update_sessionbar(status: 'idle')
  # Clear user tip when agent stops working
  @input_area.clear_user_tip
  @layout.render_input
end

#set_input_tips(message, type: :info) ⇒ Object

Set input tips message

Parameters:

  • message (String) —

    Tip message to display

  • type (Symbol) (defaults to: :info) —

    Tip type (:info, :warning, etc.)



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# File 'lib/clacky/ui2/ui_controller.rb', line 152

def set_input_tips(message, type: :info)
  @input_area.set_tips(message, type: type)
end

#set_skill_loader(skill_loader, agent_profile = nil) ⇒ Object

Set skill loader for command suggestions in the input area

Parameters:



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# File 'lib/clacky/ui2/ui_controller.rb', line 96

def set_skill_loader(skill_loader, agent_profile = nil)
  @input_area.set_skill_loader(skill_loader, agent_profile)
end

#set_working_status ⇒ Object

Set workspace status to working (called when agent starts working)



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# File 'lib/clacky/ui2/ui_controller.rb', line 654

def set_working_status
  update_sessionbar(status: 'working')
  # Show a random user tip with 40% probability when agent starts working
  @input_area.show_user_tip(probability: 0.4)
  @layout.render_input
end

#show_assistant_message(content, files:) ⇒ Object

Show assistant message

Parameters:

  • content (String) —

    Message content



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# File 'lib/clacky/ui2/ui_controller.rb', line 366

def show_assistant_message(content, files:)
  # Filter out thinking tags from models like MiniMax M2.1 that use <think>...</think>
  filtered_content = filter_thinking_tags(content)
  return if filtered_content.nil? || filtered_content.strip.empty?

  output = @renderer.render_assistant_message(filtered_content)
  append_output(output)
end

#show_command_output ⇒ Object

Show fullscreen command output view



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# File 'lib/clacky/ui2/ui_controller.rb', line 813

def show_command_output
  return unless @stdout_lines && !@stdout_lines.empty?
  return if @layout.fullscreen_mode?

  lines = build_command_output_lines
  @layout.enter_fullscreen(lines, hint: "Press Ctrl+O to return · Output updates in real-time")

  # Start background thread to refresh fullscreen content in real-time.
  # Use a dedicated stop flag so we can join() the thread cleanly and
  # avoid Thread#kill interrupting the thread while it holds @render_mutex.
  @fullscreen_refresh_stop = false
  @fullscreen_refresh_thread = Thread.new do
    until @fullscreen_refresh_stop || !@layout.fullscreen_mode?
      sleep 0.3
      next if @fullscreen_refresh_stop || !@layout.fullscreen_mode?

      @layout.refresh_fullscreen(build_command_output_lines)
    end
  rescue StandardError
    # Silently handle thread errors
  end
end

#show_complete(iterations:, cost:, duration: nil, cache_stats: nil, awaiting_user_feedback: false) ⇒ Object

Show completion status (only for tasks with more than 5 iterations)

Parameters:

  • iterations (Integer) —

    Number of iterations

  • cost (Float) —

    Cost of this run

  • duration (Float) (defaults to: nil) —

    Duration in seconds

  • cache_stats (Hash) (defaults to: nil) —

    Cache statistics

  • awaiting_user_feedback (Boolean) (defaults to: false) —

    Whether agent is waiting for user feedback



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# File 'lib/clacky/ui2/ui_controller.rb', line 437

def show_complete(iterations:, cost:, duration: nil, cache_stats: nil, awaiting_user_feedback: false)
  # Update status back to 'idle' when task is complete
  update_sessionbar(status: 'idle')

  # Clear user tip when agent stops working
  @input_area.clear_user_tip
  @layout.render_input

  # Don't show completion message if awaiting user feedback
  return if awaiting_user_feedback

  # Only show completion message for complex tasks (>5 iterations)
  return if iterations <= 5

  cache_tokens = cache_stats&.dig(:cache_read_input_tokens)
  cache_requests = cache_stats&.dig(:total_requests)
  cache_hits = cache_stats&.dig(:cache_hit_requests)

  output = @renderer.render_task_complete(
    iterations: iterations,
    cost: cost,
    duration: duration,
    cache_tokens: cache_tokens,
    cache_requests: cache_requests,
    cache_hits: cache_hits
  )
  append_output(output)
end

#show_config_modal(current_config, test_callback: nil) ⇒ Hash?

Show configuration modal dialog with multi-model support

Parameters:

Returns:

  • (Hash, nil) —

    Hash with updated config values, or nil if cancelled



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# File 'lib/clacky/ui2/ui_controller.rb', line 1114

public def show_config_modal(current_config, test_callback: nil)
  modal = Components::ModalComponent.new
  
  loop do
    # Build menu choices
    choices = []
    
    # Add model list
    current_config.models.each_with_index do |model, idx|
      is_current = (idx == current_config.current_model_index)
      model_name = model["model"] || "unnamed"
      masked_key = mask_api_key(model["api_key"])
      
      # Add type badge if present
      type_badge = case model["type"]
                  when "default" then "[default] "
                  when "lite" then "[lite] "
                  else ""
                  end
      
      display_name = "#{type_badge}#{model_name} (#{masked_key})"
      choices << {
        name: display_name,
        value: { action: :switch, index: idx }
      }
    end
    
    # Add action buttons
    choices << { name: "─" * 50, disabled: true }
    choices << { name: "[+] Add New Model", value: { action: :add } }
    choices << { name: "[*] Edit Current Model", value: { action: :edit } }
    choices << { name: "[-] Delete Model", value: { action: :delete } } if current_config.models.length > 1
    choices << { name: "[X] Close", value: { action: :close } }
    
    # Show menu
    result = modal.show(
      title: "Model Configuration", 
      choices: choices,
      on_close: -> { @layout.rerender_all }
    )
    
    return nil if result.nil?
    
    case result[:action]
    when :switch
      current_config.switch_model(result[:index])
      # Auto-save after switching
      current_config.save
      # Return to indicate config changed (need to update client)
      return { action: :switch }
    when :add
      new_model = show_model_edit_form(nil, test_callback: test_callback)
      if new_model
        # Determine anthropic_format based on provider
        # For Anthropic provider, use Anthropic API format
        anthropic_format = new_model[:provider] == "anthropic"
        
        current_config.add_model(
          model: new_model[:model],
          api_key: new_model[:api_key],
          base_url: new_model[:base_url],
          anthropic_format: anthropic_format
        )
        # Auto-save after adding
        current_config.save
        # Set newly added model as default
        current_config.switch_model(current_config.models.length - 1)
        current_config.save
        # Return to exit the menu
        return { action: :switch }
      end
    when :edit
      current_model = current_config.current_model
      edited = show_model_edit_form(current_model, test_callback: test_callback)
      if edited
        # Update current model in place (keep anthropic_format unchanged)
        current_model["api_key"] = edited[:api_key]
        current_model["model"] = edited[:model]
        current_model["base_url"] = edited[:base_url]
        # Auto-save after editing
        current_config.save
        # Return to indicate config changed (need to update client)
        return { action: :edit }
      end
    when :delete
      if current_config.models.length <= 1
        # Can't delete - show error and continue
        next
      end
      
      # Delete current model
      current_config.remove_model(current_config.current_model_index)
      # Auto-save after deleting
      current_config.save
    when :close
      # Just close the modal
      return nil
    end
  end
end

#show_diff(old_content, new_content, max_lines: 50) ⇒ Object

Show diff between old and new content

Parameters:

  • old_content (String) —

    Old content

  • new_content (String) —

    New content

  • max_lines (Integer) (defaults to: 50) —

    Maximum lines to show



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# File 'lib/clacky/ui2/ui_controller.rb', line 753

def show_diff(old_content, new_content, max_lines: 50)
  require 'diffy'

  diff = Diffy::Diff.new(old_content, new_content, context: 3)
  diff_lines = diff.to_s(:color).lines

  # Store for fullscreen toggle
  @last_diff_lines = diff_lines

  # Show diff without line numbers
  diff_lines.take(max_lines).each do |line|
    append_output(line.chomp)
  end

  if diff_lines.size > max_lines
    append_output("\n... (#{diff_lines.size - max_lines} more lines hidden. Press Ctrl+O to open full diff in pager)")
  end
rescue LoadError
  # Fallback if diffy is not available
  append_output("   Old size: #{old_content.bytesize} bytes")
  append_output("   New size: #{new_content.bytesize} bytes")
  @last_diff_lines = nil
end

#show_error(message) ⇒ Object

Show error message

Parameters:

  • message (String) —

    Error message



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# File 'lib/clacky/ui2/ui_controller.rb', line 633

def show_error(message)
  output = @renderer.render_error(message)
  append_output(output)
end

#show_file_edit_preview(path) ⇒ Object

Show file operation preview (Edit tool)

Parameters:

  • path (String) —

    File path



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# File 'lib/clacky/ui2/ui_controller.rb', line 341

def show_file_edit_preview(path)
  theme = ThemeManager.current_theme
  file_label = theme.format_symbol(:file)
  append_output("\n#{file_label} #{path || '(unknown)'}")
end

#show_file_error(error_message) ⇒ Object

Show file operation error

Parameters:

  • error_message (String) —

    Error message



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# File 'lib/clacky/ui2/ui_controller.rb', line 349

def show_file_error(error_message)
  theme = ThemeManager.current_theme
  append_output("   #{theme.format_text("Warning:", :error)} #{error_message}")
end

#show_file_write_preview(path, is_new_file:) ⇒ Object

Show file operation preview (Write tool)

Parameters:

  • path (String) —

    File path

  • is_new_file (Boolean) —

    Whether this is a new file



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# File 'lib/clacky/ui2/ui_controller.rb', line 331

def show_file_write_preview(path, is_new_file:)
  theme = ThemeManager.current_theme
  file_label = theme.format_symbol(:file)
  status = is_new_file ? theme.format_text("Creating new file", :success) : theme.format_text("Modifying existing file", :warning)
  append_output("\n#{file_label} #{path || '(unknown)'}")
  append_output(status)
end

#show_help ⇒ Object

Show help text



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# File 'lib/clacky/ui2/ui_controller.rb', line 662

def show_help
  theme = ThemeManager.current_theme

  # Separator line
  separator = theme.format_text("─" * 60, :info)

  lines = [
    separator,
    "",
    theme.format_text("Commands:", :info),
    "  #{theme.format_text("/clear", :success)}       - Clear output and restart session",
    "  #{theme.format_text("/exit", :success)}        - Exit application",
    "",
    theme.format_text("Input:", :info),
    "  #{theme.format_text("Shift+Enter", :success)}  - New line",
    "  #{theme.format_text("Up/Down", :success)}      - History navigation",
    "  #{theme.format_text("Ctrl+V", :success)}       - Paste image (Ctrl+D to delete, max 3)",
    "  #{theme.format_text("Ctrl+C", :success)}       - Clear input (press 2x to exit)",
    "",
    theme.format_text("Other:", :info),
    "  Supports Emacs-style shortcuts (Ctrl+A, Ctrl+E, etc.)",
    "",
    separator
  ]

  lines.each { |line| append_output(line) }
end

#show_idle_status(phase:, message:) ⇒ Object

Show idle compression status (two-phase: start → end). In terminal mode, only the final state is printed.



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# File 'lib/clacky/ui2/ui_controller.rb', line 618

def show_idle_status(phase:, message:)
  return unless phase.to_s == "end"
  output = @renderer.render_system_message(message)
  append_output(output)
end

#show_info(message, prefix_newline: true) ⇒ Object

Show info message

Parameters:

  • message (String) —

    Info message

  • prefix_newline (Boolean) (defaults to: true) —

    Whether to add newline before message (default: true)



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# File 'lib/clacky/ui2/ui_controller.rb', line 611

def show_info(message, prefix_newline: true)
  output = @renderer.render_system_message(message, prefix_newline: prefix_newline)
  append_output(output)
end

#show_progress(message = nil, prefix_newline: true, output_buffer: nil) ⇒ Object

Show progress indicator with dynamic elapsed time

Parameters:

  • message (String) (defaults to: nil) —

    Progress message (optional, will use random thinking verb if nil)

  • prefix_newline (Boolean) (defaults to: true) —

    Whether to add a blank line before progress (default: true)

  • output_buffer (Hash, nil) (defaults to: nil) —

    Shared output buffer for real-time command output (optional)



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# File 'lib/clacky/ui2/ui_controller.rb', line 470

def show_progress(message = nil, prefix_newline: true, output_buffer: nil)
  # Stop any existing progress thread
  stop_progress_thread

  # Update status to 'working'
  update_sessionbar(status: 'working')

  @progress_message = message || Clacky::THINKING_VERBS.sample
  @progress_start_time = Time.now
  @progress_output_buffer = output_buffer
  # Flag used by the progress thread to know when to stop gracefully.
  # Using a flag + join is safe because Thread#kill can interrupt a thread
  # while it holds @render_mutex, causing a permanent deadlock.
  @progress_thread_stop = false

  # Show initial progress (yellow, active)
  append_output("") if prefix_newline
  # Initial hint — no stdout yet, so no Ctrl+O tip at this point.
  # The background thread will add the Ctrl+O tip as soon as any stdout arrives.
  output = @renderer.render_working("#{@progress_message}… (Ctrl+C to interrupt)")
  append_output(output)

  # Start background thread to update elapsed time.
  # Also dynamically adds "Ctrl+O to view output" hint once @stdout_lines is populated.
  @progress_thread = Thread.new do
    until @progress_thread_stop
      sleep 0.5
      next if @progress_thread_stop

      start = @progress_start_time
      next unless start

      elapsed = (Time.now - start).to_i
      has_output = @stdout_lines && !@stdout_lines.empty?
      hint = has_output ?
        "(Ctrl+C to interrupt · Ctrl+O to view output · #{elapsed}s)" :
        "(Ctrl+C to interrupt · #{elapsed}s)"
      update_progress_line(@renderer.render_working("#{@progress_message}… #{hint}"))
    end
  rescue StandardError
    # Silently handle thread errors
  end
end

#show_shell_preview(command) ⇒ Object

Show shell command preview

Parameters:

  • command (String) —

    Shell command



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# File 'lib/clacky/ui2/ui_controller.rb', line 356

def show_shell_preview(command)
  theme = ThemeManager.current_theme
  cmd_label = theme.format_symbol(:command)
  append_output("\n#{cmd_label} #{command}")
end

#show_success(message) ⇒ Object

Show success message

Parameters:

  • message (String) —

    Success message



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# File 'lib/clacky/ui2/ui_controller.rb', line 640

def show_success(message)
  output = @renderer.render_success(message)
  append_output(output)
end

#show_time_machine_menu(history) ⇒ Integer?

Show time machine menu for task undo/redo

Parameters:

  • history (Array<Hash>) —

    Task history with format: [summary, status, has_branches]

Returns:

  • (Integer, nil) —

    Selected task ID or nil if cancelled



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# File 'lib/clacky/ui2/ui_controller.rb', line 1218

public def show_time_machine_menu(history)
  modal = Components::ModalComponent.new
  
  # Build menu choices from history
  choices = history.map do |task|
    # Build visual indicator
    indicator = if task[:status] == :current
      "→ "  # Current task
    elsif task[:status] == :future
      "↯ "  # Future task (after undo)
    else
      "  "  # Past task
    end
    
    # Add branch indicator
    indicator += "⎇ " if task[:has_branches]
    
    # Truncate summary to fit on screen
    max_summary_length = 60
    summary = task[:summary]
    if summary.length > max_summary_length
      summary = summary[0...max_summary_length] + "..."
    end
    
    {
      name: "#{indicator}Task #{task[:task_id]}: #{summary}",
      value: task[:task_id]
    }
  end
  
  # Show modal
  result = modal.show(
    title: "Time Machine - Select Task to Navigate",
    choices: choices,
    on_close: -> { @layout.rerender_all }
  )
  
  result # Return selected task_id or nil
end

#show_token_usage(token_data) ⇒ Object

Display token usage statistics

Parameters:

  • token_data (Hash) —

    Token usage data containing:

    • delta_tokens: token delta from previous iteration

    • prompt_tokens: input tokens

    • completion_tokens: output tokens

    • total_tokens: total tokens

    • cache_write: cache write tokens

    • cache_read: cache read tokens

    • cost: cost for this iteration



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# File 'lib/clacky/ui2/ui_controller.rb', line 246

def show_token_usage(token_data)
  theme = ThemeManager.current_theme
  pastel = Pastel.new

  token_info = []

  # Delta tokens with color coding (green/yellow/red + dim)
  delta_tokens = token_data[:delta_tokens]
  delta_str = delta_tokens.negative? ? "#{delta_tokens}" : "+#{delta_tokens}"
  color_style = if delta_tokens > 10000
    :red
  elsif delta_tokens > 5000
    :yellow
  else
    :green
  end
  colored_delta = if delta_tokens.negative?
    pastel.cyan(delta_str)
  else
    pastel.decorate(delta_str, color_style, :dim)
  end
  token_info << colored_delta

  # Cache status indicator (using theme)
  cache_write = token_data[:cache_write]
  cache_read = token_data[:cache_read]
  cache_used = cache_read > 0 || cache_write > 0
  if cache_used
    token_info << pastel.dim(theme.symbol(:cached))
  end

  # Input tokens (with cache breakdown if available)
  prompt_tokens = token_data[:prompt_tokens]
  if cache_write > 0 || cache_read > 0
    input_detail = "#{prompt_tokens} (cache: #{cache_read} read, #{cache_write} write)"
    token_info << pastel.dim("Input: #{input_detail}")
  else
    token_info << pastel.dim("Input: #{prompt_tokens}")
  end

  # Output tokens
  token_info << pastel.dim("Output: #{token_data[:completion_tokens]}")

  # Total
  token_info << pastel.dim("Total: #{token_data[:total_tokens]}")

  # Cost for this iteration with color coding (red/yellow for high cost, dim for normal)
  # :api    => "$0.001234"      (exact, from API)
  # :price  => "~$0.001234"     (estimated from pricing table)
  # :default => "N/A"           (model not in pricing table, unknown cost)
  cost_source = token_data[:cost_source]
  if cost_source == :default
    token_info << pastel.dim("Cost: N/A")
  elsif token_data[:cost]
    cost = token_data[:cost]
    cost_value = cost_source == :price ? "~$#{cost.round(6)}" : "$#{cost.round(6)}"
    if cost >= 0.1
      # High cost - red warning
      colored_cost = pastel.decorate(cost_value, :red, :dim)
      token_info << pastel.dim("Cost: ") + colored_cost
    elsif cost >= 0.05
      # Medium cost - yellow warning
      colored_cost = pastel.decorate(cost_value, :yellow, :dim)
      token_info << pastel.dim("Cost: ") + colored_cost
    else
      # Low cost - normal gray
      token_info << pastel.dim("Cost: #{cost_value}")
    end
  end

  # Display through output system (already all dimmed, just add prefix)
  token_display = pastel.dim("    [Tokens] ") + token_info.join(pastel.dim(' | '))
  append_output(token_display)
end

#show_tool_args(formatted_args) ⇒ Object

Show tool call arguments

Parameters:

  • formatted_args (String) —

    Formatted arguments string



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# File 'lib/clacky/ui2/ui_controller.rb', line 323

def show_tool_args(formatted_args)
  theme = ThemeManager.current_theme
  append_output("\n#{theme.format_text("Args: #{formatted_args}", :thinking)}")
end

#show_tool_call(name, args) ⇒ Object

Show tool call

Parameters:

  • name (String) —

    Tool name

  • args (String, Hash) —

    Tool arguments (JSON string or Hash)



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# File 'lib/clacky/ui2/ui_controller.rb', line 396

def show_tool_call(name, args)
  # Reset stdout buffer on each new tool call so previous command output
  # doesn't bleed into the next one, and so the buffer is ready before
  # on_output starts firing (which can happen before show_progress is called).
  @stdout_lines = nil
  formatted_call = format_tool_call(name, args)
  output = @renderer.render_tool_call(tool_name: name, formatted_call: formatted_call)
  append_output(output)
end

#show_tool_error(error) ⇒ Object

Show tool error

Parameters:

  • error (String, Exception) —

    Error message or exception



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# File 'lib/clacky/ui2/ui_controller.rb', line 415

def show_tool_error(error)
  error_msg = error.is_a?(Exception) ? error.message : error.to_s
  output = @renderer.render_tool_error(error: error_msg)
  append_output(output)
end

#show_tool_result(result) ⇒ Object

Show tool result

Parameters:

  • result (String) —

    Formatted tool result



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# File 'lib/clacky/ui2/ui_controller.rb', line 408

def show_tool_result(result)
  output = @renderer.render_tool_result(result: result)
  append_output(output)
end

#show_tool_stdout(lines) ⇒ Object

Receive a chunk of shell stdout from the on_output callback. Lines are buffered into @stdout_lines so that Ctrl+O can open a fullscreen live view, matching the original output_buffer interaction.

Parameters:

  • lines (Array<String>) —

    One or more stdout chunks



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# File 'lib/clacky/ui2/ui_controller.rb', line 425

def show_tool_stdout(lines)
  return if lines.nil? || lines.empty?
  @stdout_lines ||= []
  @stdout_lines.concat(lines.map(&:chomp))
end

#show_warning(message) ⇒ Object

Show warning message

Parameters:

  • message (String) —

    Warning message



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# File 'lib/clacky/ui2/ui_controller.rb', line 626

def show_warning(message)
  output = @renderer.render_warning(message)
  append_output(output)
end

#start ⇒ Object

Start the UI controller



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# File 'lib/clacky/ui2/ui_controller.rb', line 58

def start
  initialize_and_show_banner
  start_input_loop
end

#start_input_loop ⇒ Object

Start input loop (separate from initialization)



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# File 'lib/clacky/ui2/ui_controller.rb', line 88

def start_input_loop
  @running = true
  input_loop
end

#stop ⇒ Object

Stop the UI controller



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# File 'lib/clacky/ui2/ui_controller.rb', line 139

def stop
  @running = false
  @layout.cleanup_screen
end

#stop_fullscreen_refresh_thread ⇒ Object

Stop the fullscreen refresh thread gracefully via flag + join.



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# File 'lib/clacky/ui2/ui_controller.rb', line 581

def stop_fullscreen_refresh_thread
  @fullscreen_refresh_stop = true
  if @fullscreen_refresh_thread&.alive?
    joined = @fullscreen_refresh_thread.join(1.0)
    @fullscreen_refresh_thread.kill unless joined
  end
  @fullscreen_refresh_thread = nil
  @fullscreen_refresh_stop = false
end

#stop_progress_thread ⇒ Object

Stop the progress update thread gracefully. We signal the thread via a stop flag and then join it, avoiding Thread#kill which can interrupt a thread mid-critical-section (e.g. while holding @render_mutex) and leave the mutex permanently locked.



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# File 'lib/clacky/ui2/ui_controller.rb', line 595

def stop_progress_thread
  @progress_start_time = nil
  @progress_output_buffer = nil
  @progress_thread_stop = true
  if @progress_thread&.alive?
    # Join with a short timeout; fall back to kill only as a last resort
    joined = @progress_thread.join(1.0)
    @progress_thread.kill unless joined
  end
  @progress_thread = nil
  @progress_thread_stop = false
end

#toggle_mode ⇒ Object

Toggle permission mode between confirm_safes and auto_approve



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# File 'lib/clacky/ui2/ui_controller.rb', line 119

def toggle_mode
  current_mode = @config[:mode]
  new_mode = case current_mode.to_s
  when /confirm_safes/
    "auto_approve"
  when /auto_approve/
    "confirm_safes"
  else
    "auto_approve"  # Default to auto_approve if unknown mode
  end

  @config[:mode] = new_mode

  # Notify CLI to update agent_config
  @mode_toggle_callback&.call(new_mode)

  update_sessionbar
end

#update_progress_line(content) ⇒ Object

Update the last line in output area (for progress indicator)

Parameters:

  • content (String) —

    Content to update



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# File 'lib/clacky/ui2/ui_controller.rb', line 222

def update_progress_line(content)
  @layout.update_last_line(content)
end

#update_sessionbar(tasks: nil, cost: nil, status: nil) ⇒ Object

Update session bar with current stats

Parameters:

  • tasks (Integer) (defaults to: nil) —

    Number of completed tasks (optional)

  • cost (Float) (defaults to: nil) —

    Total cost (optional)

  • status (String) (defaults to: nil) —

    Workspace status (‘idle’ or ‘working’) (optional)



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# File 'lib/clacky/ui2/ui_controller.rb', line 104

def update_sessionbar(tasks: nil, cost: nil, status: nil)
  @tasks_count = tasks if tasks
  @total_cost = cost if cost
  @input_area.update_sessionbar(
    working_dir: @config[:working_dir],
    mode: @config[:mode],
    model: @config[:model],
    tasks: @tasks_count,
    cost: @total_cost,
    status: status
  )
  @layout.render_input
end

#update_todos(todos) ⇒ Object

Update todos display

Parameters:

  • todos (Array<Hash>) —

    Array of todo items



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# File 'lib/clacky/ui2/ui_controller.rb', line 233

def update_todos(todos)
  @layout.update_todos(todos)
end