* Hydra
** Base
  #+NAME: hydra-base
  #+BEGIN_SRC emacs-lisp :tangle no
    (defhydra magic_rb/hydra-base (:color red :body-pre (setq hydra-stack nil))
      ("w" (progn
	     (magic_rb/hydra-window-sub/body)
	     (hydra-push '(magic_rb/hydra-launcher)))
       "visit magic_rb/hydra-window-sub" :color teal)
      ("d" (progn
	     (magic_rb/hydra-digraph-sub/body)
	     (hydra-push '(magic_rb/hydra-launcher)))
       "visit magic_rb/hydra-window-sub" :color teal)
      ("s" treemacs-switch-workspace)
      ("S" treemacs-edit-workspaces)
      ("t" treemacs-select-window)
      ("T" treemacs)
      ("v" vterm)
      ("m" magit)
      ("RET" (progn (setq hydra-stack nil)) "Cancel" :color blue)
      ("SPC" (progn (setq hydra-stack nil)) "Cancel" :color blue))

    (defhydra magic_rb/hydra-rust (:color red :inherit (magic_rb/hydra-base/heads))
      ("r" (progn
	     (magic_rb/hydra-rust-sub/body)
	     (hydra-push '(magic_rb/hydra-launcher)))
       "visit magic_rb/hydra-rust-sub" :color teal)
      ("e" lsp-execute-code-action))

    (defhydra magic_rb/hydra-lsp (:color red :inherit (magic_rb/hydra-base/heads))
      ("e" lsp-execute-code-action))

    (defhydra magic_rb/hydra-org (:color red :inherit (magic_rb/hydra-base/heads))
      ("'" org-cycle-agenda-files :color blue))
    #+END_SRC
** Subs
*** Window
    #+NAME: hydra-window
    #+BEGIN_SRC emacs-lisp :tangle no
      (defhydra magic_rb/hydra-window-sub (:color red)
	  ("a" ace-window)
	  ("j" windmove-left)
	  ("k" windmove-up)
	  ("l" windmove-down)
	  (";" windmove-right)
	  ("x" delete-window)
	  ("RET" hydra-pop "exit" :color blue)
	  ("SPC" hydra-pop "exit" :color blue)
	  ("q" (progn (setq hydra-stack nil)) "Cancel" :color blue))
    #+END_SRC
*** Window
    #+NAME: hydra-window
    #+BEGIN_SRC emacs-lisp :tangle no
      (defmacro create-digraph (char keyseq)
	(list `(char (lambda () (interactive) (insert keyseq)))))

      (macroexpand '(create-digraph "a" "aa"))

      (defhydra magic_rb/hydra-digraph-sub (:color red)
	  (create-digraph "()" "◊")
	  ("RET" hydra-pop "exit" :color blue)
	  ("SPC" hydra-pop "exit" :color blue)
	  ("q" (progn (setq hydra-stack nil)) "Cancel" :color blue))
    #+END_SRC
*** Rust
    #+NAME: hydra-rust-sub
    #+BEGIN_SRC emacs-lisp :tangle no
      (defhydra magic_rb/hydra-rust-sub ()
	("b" rustic-cargo-build)
	("r" rustic-cargo-run)
	("t" rustic-cargo-test)
	("f" rustic-format-buffer)
	("RET" hydra-pop "exit" :color blue)
	("SPC" hydra-pop "exit" :color blue)
	("q" (progn (setq hydra-stack nil)) "Cancel" :color blue))
    #+END_SRC
*** LSP
    #+NAME: hydra
    #+BEGIN_SRC emacs-lisp :noweb yes :tangle yes
      (use-package hydra
	:ensure t
	:after (vterm magit treemacs lsp-mode) ; rustic
	:config
	(defvar hydra-stack nil)
	:bind (("C-'" . magic_rb/hydra-launcher)
	       :map org-mode-map
	       ("C-'" . magic_rb/hydra-launcher)))

      (defun hydra-push (expr)
	(push `(lambda () ,expr) hydra-stack))

      (defun hydra-pop ()
	(interactive)
	(let ((x (pop hydra-stack)))
	  (when x
	    (funcall x))))


      (defun magic_rb/hydra-launcher ()
	"A launcher for hydras based on current context."
	(interactive)
	(cl-case major-mode
	  ('rustic-mode (magic_rb/hydra-rust/body))
	  ('lsp-mode (magic_rb/hydra-rust/body))
	  ('org-mode (magic_rb/hydra-org/body))
	  (t (magic_rb/hydra-base/body))))

      <<digraph>>

      <<hydra-base>>

      <<hydra-window>> 

      <<hydra-rust>>
    #+END_SRC