Module: Fatty::Keymaps

Defined in:
lib/fatty/keymaps/emacs.rb

Class Method Summary collapse

Class Method Details

.emacs ⇒ Object 



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# File 'lib/fatty/keymaps/emacs.rb', line 5

def self.emacs
  map = KeyMap.new

  # Motion
  map.bind(key: :f, ctrl: true, action: :move_right)
  map.bind(key: :b, ctrl: true, action: :move_left)
  map.bind(key: :right, action: :move_right)
  map.bind(key: :left,  action: :move_left)
  map.bind(key: :f, meta: true, action: :move_word_right)
  map.bind(key: :b, meta: true, action: :move_word_left)
  map.bind(key: :right, meta: true, action: :move_word_right)
  map.bind(key: :left, meta: true, action: :move_word_left)
  map.bind(key: :right, ctrl: true, action: :move_word_right)
  map.bind(key: :left, ctrl: true, action: :move_word_left)

  map.bind(key: :t, ctrl: true,  context: :input, action: :transpose_chars)
  map.bind(key: :t, meta: true,  context: :input, action: :transpose_words)

  map.bind(key: :a, ctrl: true, action: :bol)
  map.bind(key: :e, ctrl: true, action: :eol)
  map.bind(key: :home, action: :bol)
  map.bind(key: :end, action: :eol)

  # Deletion
  map.bind(key: :delete, action: :delete_char_forward)
  map.bind(key: :d, ctrl: true, action: :delete_char_forward)
  map.bind(key: :backspace, action: :delete_char_backward)
  map.bind(key: :backspace, meta: true, action: :kill_word_backward)
  map.bind(key: :w, ctrl: true, action: :kill_word_backward)
  map.bind(key: :d, meta: true, action: :kill_word_forward)
  map.bind(key: :k, ctrl: true, action: :kill_to_eol)

  # Undo / Redo
  map.bind(key: :/, ctrl: true, action: :undo)
  map.bind(key: :_, ctrl: true, action: :undo)
  map.bind(key: :/, ctrl: true, meta: true, action: :redo)
  map.bind(key: :/, meta: true, action: :redo)

  # Region / Mark
  map.bind(key: :space, ctrl: true, action: :set_mark)
  map.bind(key: :'@', ctrl: true, action: :set_mark)
  map.bind(key: :g, ctrl: true, action: :clear_mark)
  map.bind(key: :w, ctrl: true, action: :kill_region)
  map.bind(key: :w, meta: true, action: :copy_region)

  # Yank / Kill ring
  map.bind(key: :y, ctrl: true, action: :yank)
  map.bind(key: :y, meta: true, action: :yank_pop)

  # Counts (prefix arg)
  map.bind(key: :u, ctrl: true, action: :universal_argument)
  map.bind_digits(context: :text, meta: true)
  map.bind_digits(context: :popup)
  map.bind_digits(context: :paging)
  # ShellSession uses contexts [:paging, :terminal] while the pager is
  # active. Bind C-u in :terminal so it works as a prefix during paging
  # (e.g. C-u / to start a regex search).
  map.bind(context: :terminal, key: :u, ctrl: true, action: :universal_argument)

  # History
  map.bind(context: :input, key: :p, ctrl: true, action: :history_prev)
  map.bind(context: :input, key: :n, ctrl: true, action: :history_next)
  map.bind(context: :input, key: :up, action: :history_prev)
  map.bind(context: :input, key: :down, action: :history_next)
  map.bind(context: :input, key: :r, ctrl: true, action: :history_search)

  # Completion on input
  map.bind(context: :input, key: :tab, action: :complete)
  map.bind(context: :input, key: :tab, meta: true, action: :completion_popup)

  # Popup
  map.bind(context: :popup, key: :c, ctrl: true, action: :popup_cancel)
  map.bind(context: :popup, key: :g, ctrl: true, action: :popup_cancel)
  map.bind(context: :popup, key: :escape, action: :popup_cancel)
  map.bind(context: :popup, key: :enter, action: :popup_accept)
  map.bind(context: :popup, key: :tab, action: :popup_accept)
  map.bind(context: :popup, key: :return, action: :popup_accept)
  map.bind(context: :popup, key: :up, action: :popup_prev)
  map.bind(context: :popup, key: :down, action: :popup_next)
  map.bind(context: :popup, key: :p, ctrl: true, action: :popup_prev)
  map.bind(context: :popup, key: :n, ctrl: true, action: :popup_next)
  map.bind(context: :popup, key: :page_up, action: :popup_page_up)
  map.bind(context: :popup, key: :page_down, action: :popup_page_down)
  map.bind(context: :popup, key: :v, meta: true, action: :popup_page_up)
  map.bind(context: :popup, key: :v, ctrl: true, action: :popup_page_down)
  map.bind(context: :popup, key: :home, action: :popup_top)
  map.bind(context: :popup, key: :end, action: :popup_bottom)
  map.bind(context: :popup, key: :'<', meta: true, action: :popup_top)
  map.bind(context: :popup, key: :'>', meta: true, action: :popup_bottom)
  map.bind(context: :popup, key: :l, ctrl: true, action: :popup_recenter)

  # Popups that present multiple items for selection have a special
  # context that steals the SPACE key for toggling selection
  map.bind(context: :popup_multi, key: :space, action: :popup_toggle_selected)

  # Prompt
  map.bind(context: :prompt, key: :c, ctrl: true, action: :prompt_cancel)
  map.bind(context: :prompt, key: :g, ctrl: true, action: :prompt_cancel)
  map.bind(context: :prompt, key: :enter, action: :prompt_accept)
  map.bind(context: :prompt, key: :return, action: :prompt_accept)
  map.bind(context: :prompt, key: :j, ctrl: true, action: :prompt_accept)

  #
  # Themes
  map.bind(context: :terminal, key: :t, meta: true, ctrl: true, action: :cycle_theme)
  map.bind(context: :terminal, key: :'=', meta: true, action: :choose_theme)

  # Final States
  map.bind(context: :terminal, key: :c, ctrl: true, action: :interrupt)
  map.bind(context: :input, key: :d, ctrl: true, action: :interrupt_if_empty)
  map.bind(context: :input, key: :enter, action: :submit_line)
  map.bind(context: :input, key: :return, action: :submit_line)
  map.bind(context: :input, key: :j, ctrl: true, action: :submit_line)
  map.bind(context: :input, key: :j, ctrl: true, meta: true, action: :submit_and_scroll)

  # Output control
  map.bind(key: :l, ctrl: true, action: :clear_output)
  map.bind(context: :paging, key: :up, action: :line_up)
  map.bind(context: :paging, key: :down, action: :line_down)
  map.bind(context: :paging, key: :k, action: :line_up)
  map.bind(context: :paging, key: :j, action: :line_down)
  map.bind(context: :paging, key: :page_up, action: :page_up)
  map.bind(context: :paging, key: :b, action: :page_up)
  map.bind(context: :paging, key: :u, action: :page_up)
  map.bind(context: :paging, key: :h, ctrl: true, action: :page_up)
  map.bind(context: :paging, key: :page_down, action: :page_down)
  map.bind(context: :paging, key: :f, action: :page_down)
  map.bind(context: :paging, key: :d, action: :page_down)
  map.bind(context: :paging, key: :space, action: :page_down)
  map.bind(context: :paging, key: :v, ctrl: true, action: :page_down)
  map.bind(context: :paging, key: :v, meta: true, action: :page_up)
  map.bind(context: :paging, key: :home, action: :page_top)
  map.bind(context: :paging, key: :g, action: :page_top)
  map.bind(context: :paging, key: :'<', meta: true, action: :page_top)
  map.bind(context: :paging, key: :end, action: :page_bottom)
  map.bind(context: :paging, key: :G, action: :page_bottom)
  map.bind(context: :paging, key: :'>', meta: true, action: :page_bottom)
  map.bind(context: :paging, key: :s, meta: true, action: :toggle_paging)
  map.bind(context: :terminal, key: :s, meta: true, action: :toggle_paging)
  map.bind(context: :paging, key: :c, ctrl: true, action: :quit_paging)
  map.bind(context: :paging, key: :g, ctrl: true, action: :quit_paging)
  map.bind(context: :paging, key: :q, action: :quit_paging)

  # Paging search (opens SearchSession via ShellSession actions)
  map.bind(context: :paging, key: :/, action: :pager_search_forward)
  map.bind(context: :paging, key: :'?', action: :pager_search_backward)
  # Incremental (string-only) search like Emacs isearch.
  # Regex is intentionally non-incremental (use C-u / or / then toggle).
  map.bind(context: :paging, key: :s, ctrl: true, action: :pager_isearch_forward)
  map.bind(context: :paging, key: :r, ctrl: true, action: :pager_isearch_backward)

  # I-search controls (within ISearchSession)
  map.bind(context: :isearch, key: :enter, action: :isearch_accept)
  map.bind(context: :isearch, key: :return, action: :isearch_accept)
  map.bind(context: :isearch, key: :j, ctrl: true, action: :isearch_accept)
  map.bind(context: :isearch, key: :s, ctrl: true, action: :isearch_next)
  map.bind(context: :isearch, key: :r, ctrl: true, action: :isearch_prev)
  map.bind(context: :isearch, key: :c, ctrl: true, action: :isearch_cancel)
  map.bind(context: :isearch, key: :g, ctrl: true, action: :isearch_cancel)
  map.bind(context: :isearch, key: :escape, action: :isearch_cancel)

  # Repeat last search (no minibuffer)
  map.bind(context: :paging, key: :n, action: :pager_search_next)
  map.bind(context: :paging, key: :N, action: :pager_search_prev)

  # Search controls (within SearchSession)
  map.bind(context: :search, key: :enter, action: :search_accept)
  map.bind(context: :search, key: :return, action: :search_accept)
  map.bind(context: :search, key: :j, ctrl: true, action: :search_accept)
  map.bind(context: :search, key: :s, ctrl: true, action: :search_step_forward)
  map.bind(context: :search, key: :r, ctrl: true, action: :search_step_backward)
  map.bind(context: :search, key: :r, meta: true, action: :search_toggle_regex)
  map.bind(context: :search, key: :c, ctrl: true, action: :search_cancel)
  map.bind(context: :search, key: :g, ctrl: true, action: :search_cancel)
  map.bind(context: :search, key: :escape, action: :search_cancel)

  # Mouse scrolling in paging
  map.bind_mouse(context: :paging, button: :scroll_up, action: :scroll_up)
  map.bind_mouse(context: :paging, button: :scroll_down, action: :scroll_down)

  # Load the user's keybindings
  map.load_user_config.activate!
end