172 lines
6.2 KiB
EmacsLisp
172 lines
6.2 KiB
EmacsLisp
;;; use-package-bind-key.el --- Support for the :bind/:bind-keymap keywords -*- lexical-binding: t; -*-
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;; Copyright (C) 2012-2022 Free Software Foundation, Inc.
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;; Author: John Wiegley <johnw@newartisans.com>
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;; Maintainer: John Wiegley <johnw@newartisans.com>
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;; This program is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with this program. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Provides support for the :bind, :bind*, :bind-keymap and :bind-keymap*
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;; keywords. Note that these are currently still baked into
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;; `use-package-keywords' and `use-package-deferring-keywords', although this
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;; is harmless if they are never used.
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;;; Code:
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(require 'use-package-core)
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(require 'bind-key)
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;;;###autoload
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(defun use-package-autoload-keymap (keymap-symbol package override)
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"Loads PACKAGE and then binds the key sequence used to invoke
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this function to KEYMAP-SYMBOL. It then simulates pressing the
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same key sequence a again, so that the next key pressed is routed
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to the newly loaded keymap.
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This function supports use-package's :bind-keymap keyword. It
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works by binding the given key sequence to an invocation of this
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function for a particular keymap. The keymap is expected to be
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defined by the package. In this way, loading the package is
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deferred until the prefix key sequence is pressed."
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(if (not (require package nil t))
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(use-package-error (format "Cannot load package.el: %s" package))
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(if (and (boundp keymap-symbol)
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(keymapp (symbol-value keymap-symbol)))
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(let* ((kv (this-command-keys-vector))
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(key (key-description kv))
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(keymap (symbol-value keymap-symbol)))
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(if override
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(bind-key* key keymap)
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(bind-key key keymap))
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(setq unread-command-events
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(mapcar (lambda (ev) (cons t ev))
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(listify-key-sequence kv))))
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(use-package-error
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(format "package.el %s failed to define keymap %s"
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package keymap-symbol)))))
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;;;###autoload
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(defun use-package-normalize-binder (name keyword args)
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(let ((arg args)
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args*)
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(while arg
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(let ((x (car arg)))
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(cond
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;; (KEY . COMMAND)
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((and (consp x)
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(or (stringp (car x))
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(vectorp (car x)))
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(or (use-package-recognize-function (cdr x) t #'stringp)))
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(setq args* (nconc args* (list x)))
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(setq arg (cdr arg)))
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;; KEYWORD
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;; :map KEYMAP
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;; :prefix-docstring STRING
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;; :prefix-map SYMBOL
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;; :prefix STRING
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;; :repeat-docstring STRING
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;; :repeat-map SYMBOL
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;; :filter SEXP
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;; :menu-name STRING
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;; :package SYMBOL
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;; :continue and :exit are used within :repeat-map
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((or (and (eq x :map) (symbolp (cadr arg)))
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(and (eq x :prefix) (stringp (cadr arg)))
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(and (eq x :prefix-map) (symbolp (cadr arg)))
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(and (eq x :prefix-docstring) (stringp (cadr arg)))
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(and (eq x :repeat-map) (symbolp (cadr arg)))
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(eq x :continue)
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(eq x :exit)
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(and (eq x :repeat-docstring) (stringp (cadr arg)))
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(eq x :filter)
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(and (eq x :menu-name) (stringp (cadr arg)))
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(and (eq x :package) (symbolp (cadr arg))))
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(setq args* (nconc args* (list x (cadr arg))))
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(setq arg (cddr arg)))
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((listp x)
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(setq args*
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(nconc args* (use-package-normalize-binder name keyword x)))
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(setq arg (cdr arg)))
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(t
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;; Error!
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(use-package-error
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(concat (symbol-name name)
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" wants arguments acceptable to the `bind-keys' macro,"
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" or a list of such values"))))))
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args*))
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;;;; :bind, :bind*
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;;;###autoload
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(defalias 'use-package-normalize/:bind 'use-package-normalize-binder)
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;;;###autoload
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(defalias 'use-package-normalize/:bind* 'use-package-normalize-binder)
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;; jww (2017-12-07): This is too simplistic. It will fail to determine
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;; autoloads in this situation:
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;; (use-package foo
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;; :bind (:map foo-map (("C-a" . func))))
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;;;###autoload
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(defalias 'use-package-autoloads/:bind 'use-package-autoloads-mode)
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;;;###autoload
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(defalias 'use-package-autoloads/:bind* 'use-package-autoloads-mode)
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;;;###autoload
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(defun use-package-handler/:bind
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(name _keyword args rest state &optional bind-macro)
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(use-package-concat
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(use-package-process-keywords name rest state)
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`(,@(mapcar
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#'(lambda (xs)
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`(,(if bind-macro bind-macro 'bind-keys)
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:package ,name ,@(use-package-normalize-commands xs)))
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(use-package-split-list-at-keys :break args)))))
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(defun use-package-handler/:bind* (name keyword arg rest state)
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(use-package-handler/:bind name keyword arg rest state 'bind-keys*))
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;;;; :bind-keymap, :bind-keymap*
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;;;###autoload
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(defalias 'use-package-normalize/:bind-keymap 'use-package-normalize-binder)
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;;;###autoload
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(defalias 'use-package-normalize/:bind-keymap* 'use-package-normalize-binder)
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;;;###autoload
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(defun use-package-handler/:bind-keymap
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(name _keyword args rest state &optional override)
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(use-package-concat
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(use-package-process-keywords name rest state)
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(mapcar
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#'(lambda (binding)
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`(,(if override 'bind-key* 'bind-key)
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,(car binding)
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#'(lambda ()
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(interactive)
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(use-package-autoload-keymap
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',(cdr binding) ',(use-package-as-symbol name)
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,override))))
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args)))
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;;;###autoload
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(defun use-package-handler/:bind-keymap* (name keyword arg rest state)
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(use-package-handler/:bind-keymap name keyword arg rest state t))
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(provide 'use-package-bind-key)
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;;; use-package-bind-key.el ends here
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