X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/21ab62bdf2e0dfbadf63d7f56042e238446f5589..20e3210fb7584494c83dda26d79b3ad54d525d2e:/lisp/recentf.el diff --git a/lisp/recentf.el b/lisp/recentf.el index dc040be910..524d00d389 100644 --- a/lisp/recentf.el +++ b/lisp/recentf.el @@ -1,1060 +1,1209 @@ -;; recentf.el --- setup a menu of recently opened files - -;; Copyright (C) 1999, 2000 Free Software Foundation, Inc. - -;; Author: David Ponce -;; Created: July 19 1999 -;; Keywords: customization - -;; This file is part of GNU Emacs. - -;; GNU Emacs is free software; you can redistribute it and/or modify -;; it under the terms of the GNU General Public License as published by -;; the Free Software Foundation; either version 2, or (at your option) -;; any later version. - -;; GNU Emacs is distributed in the hope that it will be useful, -;; but WITHOUT ANY WARRANTY; without even the implied warranty of -;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -;; GNU General Public License for more details. - -;; You should have received a copy of the GNU General Public License -;; along with GNU Emacs; see the file COPYING. If not, write to the -;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, -;; Boston, MA 02111-1307, USA. - -;;; Commentary: - -;; This package maintains a menu for visiting files that were operated -;; on recently. When enabled a new "Open Recent" submenu is displayed -;; in the "Files" menu. The recent files list is automatically saved -;; across Emacs sessions. You can customize the number of recent -;; files displayed, the location of the menu and others options (see -;; the source code for details). To install and use, put the file on -;; your Emacs-Lisp load path and add the following into your ~/.emacs -;; startup file: -;; -;; (require 'recentf) -;; (recentf-mode 1) - -;;; Code: - -(require 'easymenu) -(require 'wid-edit) - -(defconst recentf-save-file-header - ";;; Automatically generated by `recentf' on %s.\n" - "Header to be written into the `recentf-save-file'.") - -(defvar recentf-list nil - "List of recently opened files.") - -(defvar recentf-update-menu-p t - "Non-nil if the recentf menu must be updated.") - -(defvar recentf-initialized-p nil - "Non-nil if recentf already initialized.") - -;; IMPORTANT: This function must be defined before the following defcustoms -;; because it is used in their :set clause. To avoid byte-compiler warnings -;; the `symbol-value' function is used to access the `recentf-menu-path' -;; and `recentf-menu-title' values. -(defun recentf-menu-customization-changed (sym val) - "Function called when menu customization has changed. -It removes the recentf menu and forces its complete redrawing." - (when recentf-initialized-p - (easy-menu-remove-item nil - (symbol-value 'recentf-menu-path) - (symbol-value 'recentf-menu-title)) - (setq recentf-update-menu-p t)) - (custom-set-default sym val)) - -(defgroup recentf nil - "Maintain a menu of recently opened files." - :version "21.1" - :group 'files) - -(defgroup recentf-filters nil - "Group to customize recentf menu filters. -You should define the options of your own filters in this group." - :group 'recentf) - -(defcustom recentf-max-saved-items 20 - "*Maximum number of items saved to `recentf-save-file'." - :group 'recentf - :type 'integer) - -(defcustom recentf-save-file (expand-file-name "~/.recentf") - "*File to save `recentf-list' into." - :group 'recentf - :type 'file) - -(defcustom recentf-exclude nil - "*List of regexps for filenames excluded from `recentf-list'." - :group 'recentf - :type '(repeat regexp)) - -(defcustom recentf-menu-title "Open Recent" - "*Name of the recentf menu." - :group 'recentf - :type 'string - :set 'recentf-menu-customization-changed) - -(defcustom recentf-menu-path '("files") - "*Path where to add the recentf menu. -If nil add it at top-level (see also `easy-menu-change')." - :group 'recentf - :type '(choice (const :tag "Top Level" nil) - (sexp :tag "Menu Path")) - :set 'recentf-menu-customization-changed) - -(defcustom recentf-menu-before "open-file" - "*Name of the menu before which the recentf menu will be added. -If nil add it at end of menu (see also `easy-menu-change')." - :group 'recentf - :type '(choice (string :tag "Name") - (const :tag "Last" nil)) - :set 'recentf-menu-customization-changed) - -(defcustom recentf-menu-action 'recentf-find-file - "*Function to invoke with a filename item of the recentf menu. -The default action `recentf-find-file' calls `find-file' to edit an -existing file. If the file does not exist or is not readable, it is -not edited and its name is removed from `recentf-list'. You can use -`find-file' instead to open non-existing files and keep them in the -list of recently opened files." - :group 'recentf - :type 'function - :set 'recentf-menu-customization-changed) - -(defcustom recentf-max-menu-items 10 - "*Maximum number of items in the recentf menu." - :group 'recentf - :type 'integer - :set 'recentf-menu-customization-changed) - -(defcustom recentf-menu-filter nil - "*Function used to filter files displayed in the recentf menu. -Nil means no filter. The following functions are predefined: - -- - `recentf-sort-ascending' to sort menu items in ascending order. -- - `recentf-sort-descending' to sort menu items in descending order. -- - `recentf-sort-basenames-ascending' to sort file names in descending order. -- - `recentf-sort-basenames-descending' to sort file names in descending order. -- - `recentf-sort-directories-ascending' to sort directories in ascending order. -- - `recentf-sort-directories-descending' to sort directories in descending order. -- - `recentf-show-basenames' to show file names (no directories) in menu items. -- - `recentf-show-basenames-ascending' to show file names in ascending order. -- - `recentf-show-basenames-descending' to show file names in descending order. -- - `recentf-relative-filter' to show file names relative to `default-directory'. -- - `recentf-arrange-by-rule' to show sub-menus following user defined rules. -- - `recentf-arrange-by-mode' to show a sub-menu for each major mode. -- - `recentf-arrange-by-dir' to show a sub-menu for each directory. -- - `recentf-filter-changer' to manage a ring of filters. - -The filter function is called with one argument, the list of menu elements -used to build the menu and must return a new list of menu elements (see -`recentf-make-menu-element' for menu element form)." - :group 'recentf - :type 'function - :set 'recentf-menu-customization-changed) - -(defcustom recentf-menu-append-commands-p t - "*If not-nil command items are appended to the menu." - :group 'recentf - :type 'boolean - :set 'recentf-menu-customization-changed) - -(defcustom recentf-keep-non-readable-files-p nil - "*If nil (default), non-readable files are not kept in `recentf-list'." - :group 'recentf - :type 'boolean - :require 'recentf - :initialize 'custom-initialize-default - :set (lambda (sym val) - (if val - (remove-hook 'kill-buffer-hook 'recentf-remove-file-hook) - (add-hook 'kill-buffer-hook 'recentf-remove-file-hook)) - (custom-set-default sym val))) - -(defcustom recentf-mode nil - "Toggle recentf mode. -When recentf mode is enabled, it maintains a menu for visiting files that -were operated on recently. -Setting this variable directly does not take effect; -use either \\[customize] or the function `recentf-mode'." - :set (lambda (symbol value) - (recentf-mode (or value 0))) - :initialize 'custom-initialize-default - :type 'boolean - :group 'recentf - :require 'recentf) - -(defcustom recentf-load-hook nil - "*Normal hook run at end of loading the `recentf' package." - :group 'recentf - :type 'hook) - -;;; -;;; Common functions -;;; -(defconst recentf-case-fold-search - (memq system-type '(vax-vms windows-nt)) - "Non-nil if recentf searches and matches should ignore case.") - -(defun recentf-include-p (filename) - "Return t if FILENAME matches none of the `recentf-exclude' regexps." - (let ((case-fold-search recentf-case-fold-search) - (rl recentf-exclude)) - (while (and rl (not (string-match (car rl) filename))) - (setq rl (cdr rl))) - (null rl))) - -(defun recentf-add-file (filename) - "Add or move FILENAME at the beginning of `recentf-list'. -Does nothing if FILENAME matches one of the `recentf-exclude' regexps." - (let ((filename (expand-file-name filename))) - (when (recentf-include-p filename) - (setq recentf-list (cons filename (delete filename recentf-list))) - (setq recentf-update-menu-p t)))) - -(defun recentf-remove-if-non-readable (filename) - "Remove FILENAME from `recentf-list' if not readable." - (unless (file-readable-p filename) - (setq recentf-list (delete filename recentf-list)) - (setq recentf-update-menu-p t))) - -(defun recentf-find-file (filename) - "Edit file FILENAME using `find-file'. -If FILENAME is not readable it is removed from `recentf-list'." - (if (file-readable-p filename) - (find-file filename) - (progn - (message "File `%s' not found." filename) - (setq recentf-list (delete filename recentf-list)) - (setq recentf-update-menu-p t)))) - -(defun recentf-trunc-list (l n) - "Return a list of the first N elements of L." - (let ((lh nil)) - (while (and l (> n 0)) - (setq lh (cons (car l) lh)) - (setq n (1- n)) - (setq l (cdr l))) - (nreverse lh))) - -(defun recentf-elements (n) - "Return a list of the first N elements of `recentf-list'." - (recentf-trunc-list recentf-list n)) - -(defun recentf-make-menu-element (menu-item menu-value) - "Create a new menu-element. - -A menu element is a pair (MENU-ITEM . MENU-VALUE) where: - -- - MENU-ITEM is the menu item string displayed. -- - MENU-VALUE is the path used to open the file when the - corresponding MENU-ITEM is selected. Or it is - a pair (SUB-MENU-TITLE . MENU-ELEMENTS) where - SUB-MENU-TITLE is a sub-menu title and - MENU-ELEMENTS is the list of menu elements in - the sub-menu." - (cons menu-item menu-value)) - -(defun recentf-menu-element-item (e) - "Return the item part of the menu-element E." - (car e)) - -(defun recentf-menu-element-value (e) - "Return the value part of the menu-element E." - (cdr e)) - -(defun recentf-set-menu-element-item (e item) - "Change the item part of menu-element E to ITEM." - (setcar e item)) - -(defun recentf-set-menu-element-value (e value) - "Change the value part of menu-element E to VALUE." - (setcdr e value)) - -(defun recentf-sub-menu-element-p (e) - "Return non-nil if menu-element E defines a sub-menu." - (consp (recentf-menu-element-value e))) - -(defun recentf-make-default-menu-element (file-path) - "Make a new default menu element (MENU-ITEM . MENU-VALUE) for the -given recent file path FILE-PATH. MENU-ITEM and MENU-VALUE are set to -FILE-PATH. See also `recentf-make-menu-element'." - (recentf-make-menu-element file-path file-path)) - -(defun recentf-menu-elements (n) - "Return a list of the first N default menu elements from -`recentf-list'. See also `recentf-make-default-menu-element'." - (mapcar 'recentf-make-default-menu-element - (recentf-elements n))) - -(defun recentf-apply-menu-filter (filter l) - "Convenient funtion to apply the function FILTER to the list of -menu-elements L. It takes care of sub-menu elements in L and -recursively apply FILTER to them. It is guarantee than FILTER receives -only a list of single menu-elements (no sub-menu)." - (if (and (functionp filter) l) - (let ((case-fold-search recentf-case-fold-search) - menu-element sub-menu-elements single-elements) - ;; split L in two sub-listes: - ;; one of sub-menus elements and - ;; one of single menu elements - (while l - (setq menu-element (car l)) - (if (recentf-sub-menu-element-p menu-element) - (setq sub-menu-elements - (cons menu-element sub-menu-elements)) - (setq single-elements - (cons menu-element single-elements))) - (setq l (cdr l))) - ;; apply FILTER to the list of single menu elements - (if single-elements - (setq single-elements (funcall filter - (nreverse single-elements)))) - ;; apply FILTER to sub-menu menu element list - (setq l sub-menu-elements) - (setq sub-menu-elements nil) - (while l - (setq menu-element (car l)) - (recentf-set-menu-element-value - menu-element - (recentf-apply-menu-filter - filter - (recentf-menu-element-value menu-element))) - (setq sub-menu-elements (cons menu-element sub-menu-elements)) - (setq l (cdr l))) - ;; build and return the new filtered menu element list - (nconc sub-menu-elements single-elements)) - l)) - -(defvar recentf-menu-items-for-commands - (list ["Cleanup list" recentf-cleanup t] - ["Edit list..." recentf-edit-list t] - ["Save list now" recentf-save-list t] - (vector "Recentf Options..." '(customize-group "recentf") t)) - "List of menu items for recentf commands.") - -(defvar recentf-menu-filter-commands nil - "This variable can be used by menu filters to setup their own command menu. - -If non-nil it must contain a list of valid menu-items to be appended -to the recent file list part of the menu. Before calling a menu -filter function this variable is reset to nil.") - -(defun recentf-make-menu-items () - "Make menu items from `recentf-list'." - (setq recentf-menu-filter-commands nil) - (let ((file-items - (mapcar 'recentf-make-menu-item - (recentf-apply-menu-filter - recentf-menu-filter - (recentf-menu-elements recentf-max-menu-items))))) - (append (or file-items (list ["No files" t nil])) - (and (< recentf-max-menu-items (length recentf-list)) - (list ["More..." recentf-open-more-files t])) - (and recentf-menu-filter-commands - (cons "---" - recentf-menu-filter-commands)) - (and recentf-menu-append-commands-p - (cons "---" - recentf-menu-items-for-commands))))) - -(defun recentf-make-menu-item (menu-element) - "Make a menu item from a menu element (see `recentf-make-menu-element')." - (let ((menu-item (recentf-menu-element-item menu-element)) - (menu-value (recentf-menu-element-value menu-element))) - (if (recentf-sub-menu-element-p menu-element) - (cons menu-item (mapcar 'recentf-make-menu-item menu-value)) - (vector menu-item - (list recentf-menu-action menu-value) - t)))) - -;;; -;;; Predefined menu filter functions -;;; - -(defun recentf-sort-ascending (l) - "Sort the list of menu elements L in ascending order. -The MENU-ITEM part of each menu element is compared." - (sort (copy-sequence l) - (function - (lambda (e1 e2) - (string-lessp (recentf-menu-element-item e1) - (recentf-menu-element-item e2)))))) - -(defun recentf-sort-descending (l) - "Sort the list of menu elements L in descending order. -The MENU-ITEM part of each menu element is compared." - (sort (copy-sequence l) - (function - (lambda (e1 e2) - (string-lessp (recentf-menu-element-item e2) - (recentf-menu-element-item e1)))))) - -(defun recentf-sort-basenames-ascending (l) - "Sort the list of menu elements L in ascending order. -Only file names (without directories) are compared." - (sort (copy-sequence l) - (function - (lambda (e1 e2) - (string-lessp - (file-name-nondirectory (recentf-menu-element-value e1)) - (file-name-nondirectory (recentf-menu-element-value e2))))))) - -(defun recentf-sort-basenames-descending (l) - "Sort the list of menu elements L in descending order. -Only file names (without directories) are compared." - (sort (copy-sequence l) - (function - (lambda (e1 e2) - (string-lessp - (file-name-nondirectory (recentf-menu-element-value e2)) - (file-name-nondirectory (recentf-menu-element-value e1))))))) - -(defun recentf-directory-compare (p1 p2) - "Compare directories then filenames in pathes P1 and P2 and return -non-nil if P1 is less than P2." - (let ((d1 (file-name-directory p1)) - (f1 (file-name-nondirectory p1)) - (d2 (file-name-directory p2)) - (f2 (file-name-nondirectory p2))) - (if (string= d1 d2) - (string-lessp f1 f2) - (string-lessp d1 d2)))) - -(defun recentf-sort-directories-ascending (l) - "Sort the list of menu elements L in ascending order. -Compares directories then filenames to order the list." - (sort (copy-sequence l) - (function - (lambda (e1 e2) - (recentf-directory-compare (recentf-menu-element-value e1) - (recentf-menu-element-value e2)))))) - -(defun recentf-sort-directories-descending (l) - "Sort the list of menu elements L in descending order. -Compares directories then filenames to order the list." - (sort (copy-sequence l) - (function - (lambda (e1 e2) - (recentf-directory-compare (recentf-menu-element-value e2) - (recentf-menu-element-value e1)))))) - -(defun recentf-show-basenames (l) - "Filter the list of menu elements L to show only file names (no directories) -in the menu. When file names are duplicated their directory component is added." - (let ((names (mapcar (function - (lambda (item) - (file-name-nondirectory - (recentf-menu-element-value item)))) - l)) - (dirs (mapcar (function - (lambda (item) - (file-name-directory - (recentf-menu-element-value item)))) - l)) - (pathes (mapcar 'recentf-menu-element-value l)) - (pos -1) - item filtered-items filtered-list) - (while names - (setq item (car names)) - (setq names (cdr names)) - (setq pos (1+ pos)) - (setq filtered-list - (cons (recentf-make-menu-element - (if (or (member item names) (member item filtered-items)) - (concat item " (" (nth pos dirs) ")") - item) - (nth pos pathes)) - filtered-list)) - (setq filtered-items (cons item filtered-items))) - (nreverse filtered-list))) - -(defun recentf-show-basenames-ascending (l) - "Filter the list of menu elements L to show only file names in the menu, -sorted in ascending order. This filter combines the `recentf-sort-basenames-ascending' -and `recentf-show-basenames' filters." - (recentf-show-basenames (recentf-sort-basenames-ascending l))) - -(defun recentf-show-basenames-descending (l) - "Filter the list of menu elements L to show only file names in the menu, -sorted in descending order. This filter combines the `recentf-sort-basenames-descending' -and `recentf-show-basenames' filters." - (recentf-show-basenames (recentf-sort-basenames-descending l))) - -(defun recentf-relative-filter (l) - "Filter the list of `recentf-menu-elements' L to show filenames -relative to `default-directory'." - (setq recentf-update-menu-p t) ; force menu update - (mapcar (function - (lambda (menu-element) - (let* ((ful-path (recentf-menu-element-value menu-element)) - (rel-path (file-relative-name ful-path))) - (if (string-match "^\\.\\." rel-path) - menu-element - (recentf-make-menu-element rel-path ful-path))))) - l)) - -(defcustom recentf-arrange-rules - '( - ("Elisp files (%d)" ".\\.el$") - ("Java files (%d)" ".\\.java$") - ("C/C++ files (%d)" "c\\(pp\\)?$") - ) - "*List of rules used by `recentf-arrange-by-rule' to build sub-menus. -A rule is a pair (SUB-MENU-TITLE . MATCHER). SUB-MENU-TITLE is the -displayed title of the sub-menu where a '%d' `format' pattern is -replaced by the number of items in the sub-menu. MATCHER is a regexp -or a list of regexps. Items matching one of the regular expressions in -MATCHER are added to the corresponding sub-menu." - :group 'recentf-filters - :type '(repeat (cons string (repeat regexp))) - :set 'recentf-menu-customization-changed) - -(defcustom recentf-arrange-by-rule-others "Other files (%d)" - "*Title of the `recentf-arrange-by-rule' sub-menu where items that -don't match any `recentf-arrange-rules' are displayed. If nil -these items are displayed in the main recent files menu. A '%d' -`format' pattern in the title is replaced by the number of items in -the sub-menu." - :group 'recentf-filters - :type '(choice (const :tag "Main menu" nil) - (string :tag "Title")) - :set 'recentf-menu-customization-changed) - -(defcustom recentf-arrange-by-rules-min-items 0 - "*Minimum number of items in a `recentf-arrange-by-rule' sub-menu. -If the number of items in a sub-menu is less than this value the -corresponding sub-menu items are displayed in the main recent files -menu or in the `recentf-arrange-by-rule-others' sub-menu if -defined." - :group 'recentf-filters - :type 'number - :set 'recentf-menu-customization-changed) - -(defcustom recentf-arrange-by-rule-subfilter nil - "*Function used by `recentf-arrange-by-rule' to filter sub-menu elements. -Nil means no filter. See also `recentf-menu-filter'. You can't use -`recentf-arrange-by-rule' itself here!" - :group 'recentf-filters - :type 'function - :set (lambda (sym val) - (if (eq val 'recentf-arrange-by-rule) - (error "Can't use `recentf-arrange-by-rule' itself here!") - (recentf-menu-customization-changed sym val)))) - -(defun recentf-match-rule-p (matcher file-path) - "Return non-nil if FILE-PATH match the rule specified by MATCHER. -See `recentf-arrange-rules' for details on MATCHER." - (if (stringp matcher) - (string-match matcher file-path) - (while (and (consp matcher) - (not (string-match (car matcher) file-path))) - (setq matcher (cdr matcher))) - matcher)) - -(defun recentf-arrange-by-rule (l) - "Filter the list of menu-elements L to arrange them in sub-menus -following rules in `recentf-arrange-rules'." - (let ((sub-menus-number (length recentf-arrange-rules))) - (if (> sub-menus-number 0) - (let ((sub-menus (apply 'vector - (mapcar (function - (lambda (pair) - (list (car pair)))) - recentf-arrange-rules))) - other-menu-elements index min-size) - (while l - (let* ((menu-element (car l)) - (file-path (recentf-menu-element-value menu-element)) - (rules recentf-arrange-rules) - (found nil)) - (setq index 0) - (while (and (not found) rules) - (if (recentf-match-rule-p (cdar rules) file-path) - (let ((sub-menu (aref sub-menus index))) - (setq found t) - (recentf-set-menu-element-value - sub-menu - (cons menu-element (recentf-menu-element-value sub-menu))) - )) - (setq index (1+ index)) - (setq rules (cdr rules))) - (or found - (setq other-menu-elements - (cons menu-element other-menu-elements))) - (setq l (cdr l)))) - (setq index 0) - (setq l nil) - (setq min-size (if (integerp recentf-arrange-by-rules-min-items) - (max 0 recentf-arrange-by-rules-min-items) - 0)) - (while (< index sub-menus-number) - (let* ((sub-menu (aref sub-menus index)) - (sub-menu-title (recentf-menu-element-item sub-menu)) - (sub-menu-elements (recentf-menu-element-value sub-menu)) - (sub-menu-length (length sub-menu-elements))) - (if (> sub-menu-length 0) - (cond - ((< sub-menu-length min-size) - (setq other-menu-elements - (nconc sub-menu-elements other-menu-elements))) - ((>= sub-menu-length min-size) - (recentf-set-menu-element-item - sub-menu - (format sub-menu-title sub-menu-length)) - (recentf-set-menu-element-value - sub-menu - (recentf-apply-menu-filter - recentf-arrange-by-rule-subfilter - (nreverse sub-menu-elements))) - (setq l (cons sub-menu l))))) - (setq index (1+ index)))) - (if (and (stringp recentf-arrange-by-rule-others) - other-menu-elements) - (setq l - (nreverse - (cons (recentf-make-menu-element - (format recentf-arrange-by-rule-others - (length other-menu-elements)) - (recentf-apply-menu-filter - recentf-arrange-by-rule-subfilter - (nreverse other-menu-elements))) - l))) - (setq l (nconc (nreverse l) - (recentf-apply-menu-filter - recentf-arrange-by-rule-subfilter - (nreverse other-menu-elements))))))) - l)) - -(defun recentf-build-mode-rules () - "Convert `auto-mode-alist' to `recentf-arrange-rules' format." - (let ((case-fold-search recentf-case-fold-search) - (modes auto-mode-alist) - regexp mode rule-name rule rules) - (while modes - (setq regexp (caar modes)) - (setq mode (cdar modes)) - (when (symbolp mode) - (setq rule-name (symbol-name mode)) - (if (string-match "\\(.*\\)-mode$" rule-name) - (setq rule-name (match-string 1 rule-name))) - (setq rule-name (concat rule-name " (%d)")) - (setq rule (assoc rule-name rules)) - (if rule - (setcdr rule (cons regexp (cdr rule))) - (setq rules (cons (list rule-name regexp) rules)))) - (setq modes (cdr modes))) - ;; It is important to preserve auto-mode-alist order - ;; to ensure the right file <-> mode association - (nreverse rules))) - -(defun recentf-arrange-by-mode (l) - "Filter the list of menu-elements L to build sub-menus for each -major mode." - (let ((recentf-arrange-rules (recentf-build-mode-rules)) - (recentf-arrange-by-rule-others "others (%d)")) - (recentf-arrange-by-rule l))) - -(defun recentf-build-dir-rules (l) - "Convert directories in the list of menu-elements L to rules in -`recentf-arrange-rules' format." - (let (dirs) - (mapcar (function - (lambda (e) - (let ((dir (file-name-directory - (recentf-menu-element-value e)))) - (or (member dir dirs) - (setq dirs (cons dir dirs)))))) - l) - (mapcar (function - (lambda (d) - (cons (concat d " (%d)") - (concat "\\`" d)))) - (nreverse (sort dirs 'string-lessp))))) - -(defun recentf-file-name-nondir (l) - "Filter the list of menu-elements L to show only filenames. This -simplified version of `recentf-show-basenames' do not handle -duplicates. It is used by `recentf-arrange-by-dir' as its -`recentf-arrange-by-rule-subfilter'." - (mapcar (function - (lambda (e) - (recentf-make-menu-element - (file-name-nondirectory (recentf-menu-element-value e)) - (recentf-menu-element-value e)))) - l)) - -(defun recentf-arrange-by-dir (l) - "Filter the list of menu-elements L to build sub-menus for each -directory." - (let ((recentf-arrange-rules (recentf-build-dir-rules l)) - (recentf-arrange-by-rule-subfilter 'recentf-file-name-nondir) - recentf-arrange-by-rule-others) - (nreverse (recentf-arrange-by-rule l)))) - -(defvar recentf-filter-changer-state nil - "Used by `recentf-filter-changer' to hold its state.") - -(defcustom recentf-filter-changer-alist - '( - (recentf-arrange-by-mode . "*Files by Mode*") - (recentf-arrange-by-dir . "*Files by Directory*") - (recentf-arrange-by-rule . "*Files by User Rule*") - ) - "*List of filters managed by `recentf-filter-changer'. -Each filter is defined by a pair (FILTER-FUN . FILTER-LBL) where: - -- - FILTER-FUN is the function that filters menu-elements -- - FILTER-LBL is the menu item used to activate the filter" - :group 'recentf-filters - :type '(repeat (cons function string)) - :set (lambda (sym val) - (setq recentf-filter-changer-state nil) - (recentf-menu-customization-changed sym val))) - -(defun recentf-filter-changer-goto-next () - "Go to the next filter available (see `recentf-filter-changer')." - (and (consp recentf-filter-changer-state) - (setq recentf-filter-changer-state - (cdr recentf-filter-changer-state))) - (setq recentf-update-menu-p t)) - -(defun recentf-filter-changer-get-current () - "Get the current filter available (see `recentf-filter-changer')." - (if (null recentf-filter-changer-state) - (setq recentf-filter-changer-state recentf-filter-changer-alist)) - (and (consp recentf-filter-changer-state) - (car recentf-filter-changer-state))) - -(defun recentf-filter-changer-get-next () - "Get the next filter available (see `recentf-filter-changer')." - (let ((filters recentf-filter-changer-state)) - (cond ((consp filters) - (setq filters (cdr filters)) - (if (null filters) - (setq filters recentf-filter-changer-alist))) - (t - (setq filters recentf-filter-changer-alist) - (if (consp filters) - (setq filters (cdr filters))))) - (if (consp filters) - (car filters)))) - -(defun recentf-filter-changer (l) - "Manage a ring of filters. `recentf-filter-changer-alist' defines -the filters in the ring. Actual filtering of L is delegated to the -current filter in the ring. A filter menu item is displayed allowing -to dynamically activate the next filter in the ring. If the filter -ring is empty L is left unchanged." - (let ((current-filter-item (recentf-filter-changer-get-current)) - (next-filter-item (recentf-filter-changer-get-next))) - (when current-filter-item - (setq l (recentf-apply-menu-filter (car current-filter-item) l)) - (if next-filter-item - (setq recentf-menu-filter-commands - (list (vector (cdr next-filter-item) - '(recentf-filter-changer-goto-next) - t))))) - l)) - -;;; -;;; Dialogs stuff -;;; - -(defun recentf-cancel-dialog (&rest ignore) - "Cancel the current dialog. Used by `recentf-edit-list' and -`recentf-open-files' dialogs." - (interactive) - (kill-buffer (current-buffer)) - (message "Dialog canceled.")) - -(defvar recentf-dialog-mode-map nil - "`recentf-dialog-mode' keymap.") - -(if recentf-dialog-mode-map - () - (setq recentf-dialog-mode-map (make-sparse-keymap)) - (define-key recentf-dialog-mode-map "q" 'recentf-cancel-dialog) - (set-keymap-parent recentf-dialog-mode-map widget-keymap)) - -(defun recentf-dialog-mode () - "Major mode used in recentf dialogs. - -These are the special commands of recentf-dialog-mode mode: - q -- cancel this dialog." - (interactive) - (setq major-mode 'recentf-dialog-mode) - (setq mode-name "recentf-dialog") - (use-local-map recentf-dialog-mode-map)) - -;;; -;;; Hooks and Commands -;;; - -(defun recentf-add-file-hook () - "Insert the name of the file just opened or written into `recentf-list'." - (and buffer-file-name (recentf-add-file buffer-file-name)) - nil) - -(defun recentf-remove-file-hook () - "When a buffer is killed remove a non readable file from `recentf-list'." - (and buffer-file-name (recentf-remove-if-non-readable buffer-file-name)) - nil) - -(defun recentf-update-menu-hook () - "Update the recentf menu from the current `recentf-list'." - (when recentf-update-menu-p - (condition-case nil - (progn - (setq recentf-update-menu-p nil) - (easy-menu-change recentf-menu-path - recentf-menu-title - (recentf-make-menu-items) - recentf-menu-before)) - (error nil)))) - -(defun recentf-dump-variable (variable &optional limit) - "Insert a \"(setq VARIABLE value)\" in the current buffer. Optional -argument LIMIT specifies a maximum length when VARIABLE value is a -list (default to the full list)." - (let ((value (symbol-value variable))) - (insert (format "(setq %S\n '(\n" variable)) - (cond ((consp value) - (if (and (integerp limit) (> limit 0)) - (setq value (recentf-trunc-list value limit))) - (mapcar (function - (lambda (e) - (insert (format " %S\n" e)))) - value)) - (t - (insert (format " %S\n" value)))) - (insert " ))\n") - )) - -;;;###autoload -(defun recentf-save-list () - "Save the current `recentf-list' to the file `recentf-save-file'." - (interactive) - (with-temp-buffer - (erase-buffer) - (insert (format recentf-save-file-header (current-time-string))) - (recentf-dump-variable 'recentf-list recentf-max-saved-items) - (recentf-dump-variable 'recentf-filter-changer-state) - (if (file-writable-p recentf-save-file) - (write-region (point-min) (point-max) recentf-save-file)) - (kill-buffer (current-buffer))) - nil) - -(defvar recentf-edit-selected-items nil - "Used by `recentf-edit-list' to hold the list of files to be deleted -from `recentf-list'.") - -(defun recentf-edit-list-action (widget &rest ignore) - "Checkbox widget action used by `recentf-edit-list' to select/unselect a file." - (let ((value (widget-get widget ':tag))) - ;; if value is already in the selected items - (if (memq value recentf-edit-selected-items) - ;; then remove it - (progn - (setq recentf-edit-selected-items - (delq value recentf-edit-selected-items)) - (message "%s removed from selection." value)) - ;; else add it - (progn - (setq recentf-edit-selected-items - (nconc (list value) recentf-edit-selected-items)) - (message "%s added to selection." value))))) - -;;;###autoload -(defun recentf-edit-list () - "Allow the user to edit the files that are kept in the recent list." - (interactive) - (with-current-buffer (get-buffer-create (concat "*" recentf-menu-title " - Edit list*")) - (switch-to-buffer (current-buffer)) - (kill-all-local-variables) - (let ((inhibit-read-only t)) - (erase-buffer)) - (let ((all (overlay-lists))) - ;; Delete all the overlays. - (mapcar 'delete-overlay (car all)) - (mapcar 'delete-overlay (cdr all))) - (setq recentf-edit-selected-items nil) - ;; Insert the dialog header - (widget-insert "Select the files to be deleted from the 'recentf-list'.\n\n") - (widget-insert "Click on Ok to update the list. ") - (widget-insert "Click on Cancel or type \"q\" to quit.\n") - ;; Insert the list of files as checkboxes - (mapcar (function - (lambda (item) - (widget-create 'checkbox - :value nil ; unselected checkbox - :format "\n %[%v%] %t" - :tag item - :notify 'recentf-edit-list-action))) - recentf-list) - (widget-insert "\n\n") - ;; Insert the Ok button - (widget-create 'push-button - :notify (lambda (&rest ignore) - (if recentf-edit-selected-items - (progn (kill-buffer (current-buffer)) - (mapcar (function - (lambda (item) - (setq recentf-list - (delq item recentf-list)))) - recentf-edit-selected-items) - (message "%S file(s) removed from the list" - (length recentf-edit-selected-items)) - (setq recentf-update-menu-p t)) - (message "No file selected."))) - "Ok") - (widget-insert " ") - ;; Insert the Cancel button - (widget-create 'push-button - :notify 'recentf-cancel-dialog - "Cancel") - (recentf-dialog-mode) - (widget-setup) - (goto-char (point-min)))) - -;;;###autoload -(defun recentf-cleanup () - "Remove all non-readable and excluded files from `recentf-list'." - (interactive) - (let ((count (length recentf-list))) - (setq recentf-list - (delq nil - (mapcar (function - (lambda (filename) - (and (file-readable-p filename) - (recentf-include-p filename) - filename))) - recentf-list))) - (setq count (- count (length recentf-list))) - (message "%s removed from the list" - (cond ((= count 0) "No file") - ((= count 1) "One file") - (t (format "%d files" count))))) - (setq recentf-update-menu-p t)) - -(defun recentf-open-files-action (widget &rest ignore) - "Button widget action used by `recentf-open-files' to open a file." - (kill-buffer (current-buffer)) - (funcall recentf-menu-action (widget-value widget))) - -(defvar recentf-open-files-item-shift "" - "String used by `recentf-open-files' to shift right sub-menu -items.") - -(defun recentf-open-files-item (menu-element) - "Function called by `recentf-open-files' to insert a menu-element -item in the current interaction buffer." - (let ((menu-item (car menu-element)) - (file-path (cdr menu-element))) - (if (consp file-path) ; This is a sub-menu - (let* ((shift recentf-open-files-item-shift) - (recentf-open-files-item-shift (concat shift " "))) - (widget-create 'item - :tag menu-item - :sample-face 'bold - :format (concat shift "%{%t%}:\n")) - (mapcar 'recentf-open-files-item - file-path) - (widget-insert "\n")) - (widget-create 'push-button - :button-face 'default - :tag menu-item - :help-echo (concat "Open " file-path) - :format (concat recentf-open-files-item-shift "%[%t%]") - :notify 'recentf-open-files-action - file-path) - (widget-insert "\n")))) - -;;;###autoload -(defun recentf-open-files (&optional files buffer-name) - "Open a buffer that allows the user to choose a file to open from -the list of recently opened files. The optional argument FILES may be -used to specify the list, otherwise recentf-list is used. The optional -argument BUFFER-NAME specifies which buffer to use for the interaction." - (interactive) - (if (null files) - (setq files recentf-list)) - (if (null buffer-name) - (setq buffer-name (concat "*" recentf-menu-title "*"))) - (with-current-buffer (get-buffer-create buffer-name) - (switch-to-buffer (current-buffer)) - (kill-all-local-variables) - (let ((inhibit-read-only t)) - (erase-buffer)) - (let ((all (overlay-lists))) - ;; Delete all the overlays. - (mapcar 'delete-overlay (car all)) - (mapcar 'delete-overlay (cdr all))) - ;; Insert the dialog header - (widget-insert "Click on a file to open it. ") - (widget-insert "Click on Cancel or type \"q\" to quit.\n\n" ) - ;; Insert the list of files as buttons - (let ((recentf-open-files-item-shift "")) - (mapcar 'recentf-open-files-item - (recentf-apply-menu-filter - recentf-menu-filter - (mapcar 'recentf-make-default-menu-element files)))) - (widget-insert "\n") - ;; Insert the Cancel button - (widget-create 'push-button - :notify 'recentf-cancel-dialog - "Cancel") - (recentf-dialog-mode) - (widget-setup) - (goto-char (point-min)))) - -;;;###autoload -(defun recentf-open-more-files () - "Allow the user to open files that are not in the menu." - (interactive) - (recentf-open-files (nthcdr recentf-max-menu-items recentf-list) - (concat "*" recentf-menu-title " - More*"))) - -;;;###autoload -(defun recentf-mode (&optional arg) - "Toggle recentf mode. -With prefix ARG, turn recentf mode on if and only if ARG is positive. -Returns the new status of recentf mode (non-nil means on). - -When recentf mode is enabled, it maintains a menu for visiting files that -were operated on recently." - (interactive "P") - (let ((on-p (if arg - (> (prefix-numeric-value arg) 0) - (not recentf-mode)))) - (if on-p - (unless recentf-initialized-p - (setq recentf-initialized-p t) - (if (file-readable-p recentf-save-file) - (load-file recentf-save-file)) - (setq recentf-update-menu-p t) - (add-hook 'find-file-hooks 'recentf-add-file-hook) - (add-hook 'write-file-hooks 'recentf-add-file-hook) - (add-hook 'menu-bar-update-hook 'recentf-update-menu-hook) - (add-hook 'kill-emacs-hook 'recentf-save-list)) - (when recentf-initialized-p - (setq recentf-initialized-p nil) - (recentf-save-list) - (easy-menu-remove-item nil recentf-menu-path recentf-menu-title) - (remove-hook 'find-file-hooks 'recentf-add-file-hook) - (remove-hook 'write-file-hooks 'recentf-add-file-hook) - (remove-hook 'menu-bar-update-hook 'recentf-update-menu-hook) - (remove-hook 'kill-emacs-hook 'recentf-save-list))) - (setq recentf-mode on-p))) - -(provide 'recentf) - -(run-hooks 'recentf-load-hook) - -;;; recentf.el ends here. +;;; recentf.el --- setup a menu of recently opened files + +;; Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, +;; 2005 Free Software Foundation, Inc. + +;; Author: David Ponce +;; Created: July 19 1999 +;; Maintainer: FSF +;; Keywords: files + +;; This file is part of GNU Emacs. + +;; GNU Emacs is free software; you can redistribute it and/or modify +;; it under the terms of the GNU General Public License as published +;; by the Free Software Foundation; either version 2, or (at your +;; option) any later version. + +;; GNU Emacs is distributed in the hope that it will be useful, +;; but WITHOUT ANY WARRANTY; without even the implied warranty of +;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +;; GNU General Public License for more details. + +;; You should have received a copy of the GNU General Public License +;; along with GNU Emacs; see the file COPYING. If not, write to the +;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, +;; Boston, MA 02110-1301, USA. + +;;; Commentary: + +;; This package maintains a menu for visiting files that were operated +;; on recently. When enabled a new "Open Recent" sub menu is +;; displayed in the "Files" menu. The recent files list is +;; automatically saved across Emacs sessions. You can customize the +;; number of recent files displayed, the location of the menu and +;; others options (see the source code for details). + +;;; History: +;; + +;;; Code: +(require 'easymenu) +(require 'tree-widget) +(require 'timer) + +;;; Internal data +;; +(defvar recentf-list nil + "List of recently opened files.") + +(defvar recentf-data-cache nil + "Cache of data used to build the recentf menu. +The menu is rebuilt when this data has changed.") + +;;; Customization +;; +(defgroup recentf nil + "Maintain a menu of recently opened files." + :version "21.1" + :group 'files) + +(defgroup recentf-filters nil + "Group to customize recentf menu filters. +You should define the options of your own filters in this group." + :group 'recentf) + +(defcustom recentf-max-saved-items 20 + "*Maximum number of items of the recent list that will be saved. +A nil value means to save the whole list. +See the command `recentf-save-list'." + :group 'recentf + :type 'integer) + +(defcustom recentf-save-file "~/.recentf" + "*File to save the recent list into." + :group 'recentf + :type 'file) + +(defcustom recentf-exclude nil + "*List of regexps and predicates for filenames excluded from the recent list. +When a filename matches any of the regexps or satisfies any of the +predicates it is excluded from the recent list. +A predicate is a function that is passed a filename to check and that +must return non-nil to exclude it." + :group 'recentf + :type '(repeat (choice regexp function))) + +(defcustom recentf-keep + '(file-readable-p) + "*List of regexps and predicates for filenames kept in the recent list. +Regexps and predicates are tried in the specified order. +When nil all filenames are kept in the recent list. +When a filename matches any of the regexps or satisfies any of the +predicates it is kept in the recent list. +The default is to keep readable files. +A predicate is a function that is passed a filename to check and that +must return non-nil to keep it. For example, you can add the +`file-remote-p' predicate in front of this list to keep remote file +names in the recent list without checking their readability through a +remote access." + :group 'recentf + :type '(repeat (choice regexp function))) + +(defun recentf-menu-customization-changed (variable value) + "Function called when the recentf menu customization has changed. +Set VARIABLE with VALUE, and force a rebuild of the recentf menu." + (when (featurep 'recentf) + ;; Unavailable until recentf has been loaded. + (recentf-clear-data)) + (set-default variable value)) + +(defcustom recentf-menu-title "Open Recent" + "*Name of the recentf menu." + :group 'recentf + :type 'string + :set 'recentf-menu-customization-changed) + +(defcustom recentf-menu-path '("File") + "*Path where to add the recentf menu. +If nil add it at top level (see also `easy-menu-add-item')." + :group 'recentf + :type '(choice (const :tag "Top Level" nil) + (sexp :tag "Menu Path")) + :set 'recentf-menu-customization-changed) + +(defcustom recentf-menu-before "Open File..." + "*Name of the menu before which the recentf menu will be added. +If nil add it at end of menu (see also `easy-menu-add-item')." + :group 'recentf + :type '(choice (string :tag "Name") + (const :tag "Last" nil)) + :set 'recentf-menu-customization-changed) + +(defcustom recentf-menu-action 'find-file + "*Function to invoke with a filename item of the recentf menu. +The default is to call `find-file' to edit the selected file." + :group 'recentf + :type 'function + :set 'recentf-menu-customization-changed) + +(defcustom recentf-max-menu-items 10 + "*Maximum number of items in the recentf menu." + :group 'recentf + :type 'integer + :set 'recentf-menu-customization-changed) + +(defcustom recentf-menu-filter nil + "*Function used to filter files displayed in the recentf menu. +A nil value means no filter. The following functions are predefined: + +- `recentf-sort-ascending' + Sort menu items in ascending order. +- `recentf-sort-descending' + Sort menu items in descending order. +- `recentf-sort-basenames-ascending' + Sort menu items by filenames sans directory in ascending order. +- `recentf-sort-basenames-descending' + Sort menu items by filenames sans directory in descending order. +- `recentf-sort-directories-ascending' + Sort menu items by directories in ascending order. +- `recentf-sort-directories-descending' + Sort menu items by directories in descending order. +- `recentf-show-basenames' + Show filenames sans directory in menu items. +- `recentf-show-basenames-ascending' + Show filenames sans directory in ascending order. +- `recentf-show-basenames-descending' + Show filenames sans directory in descending order. +- `recentf-relative-filter' + Show filenames relative to `default-directory'. +- `recentf-arrange-by-rule' + Show sub-menus following user defined rules. +- `recentf-arrange-by-mode' + Show a sub-menu for each major mode. +- `recentf-arrange-by-dir' + Show a sub-menu for each directory. +- `recentf-filter-changer' + Manage a ring of filters. + +The filter function is called with one argument, the list of menu +elements used to build the menu and must return a new list of menu +elements (see `recentf-make-menu-element' for menu element form)." + :group 'recentf + :type '(radio (const nil) + (function-item recentf-sort-ascending) + (function-item recentf-sort-descending) + (function-item recentf-sort-basenames-ascending) + (function-item recentf-sort-basenames-descending) + (function-item recentf-sort-directories-ascending) + (function-item recentf-sort-directories-descending) + (function-item recentf-show-basenames) + (function-item recentf-show-basenames-ascending) + (function-item recentf-show-basenames-descending) + (function-item recentf-relative-filter) + (function-item recentf-arrange-by-rule) + (function-item recentf-arrange-by-mode) + (function-item recentf-arrange-by-dir) + (function-item recentf-filter-changer) + function) + :set 'recentf-menu-customization-changed) + +(defcustom recentf-menu-append-commands-flag t + "*Non-nil means to append command items to the menu." + :group 'recentf + :type 'boolean + :set 'recentf-menu-customization-changed) + +(define-obsolete-variable-alias 'recentf-menu-append-commands-p + 'recentf-menu-append-commands-flag + "22.1") + +(defcustom recentf-auto-cleanup 'mode + "*Define when to automatically cleanup the recent list. +The following values can be set: + +- `mode' + Cleanup when turning the mode on (default). +- `never' + Never cleanup the list automatically. +- A number + Cleanup each time Emacs has been idle that number of seconds. +- A time string + Cleanup at specified time string, for example at \"11:00pm\". + +Setting this variable directly does not take effect; +use \\[customize]. + +See also the command `recentf-cleanup', that can be used to manually +cleanup the list." + :group 'recentf + :type '(radio (const :tag "When mode enabled" + :value mode) + (const :tag "Never" + :value never) + (number :tag "When idle that seconds" + :value 300) + (string :tag "At time" + :value "11:00pm")) + :set (lambda (variable value) + (set-default variable value) + (when (featurep 'recentf) + ;; Unavailable until recentf has been loaded. + (recentf-auto-cleanup)))) + +(defcustom recentf-initialize-file-name-history t + "*Non-nil means to initialize `file-name-history' with the recent list. +If `file-name-history' is not empty, do nothing." + :group 'recentf + :type 'boolean) + +(defcustom recentf-load-hook nil + "*Normal hook run at end of loading the `recentf' package." + :group 'recentf + :type 'hook) + +(defcustom recentf-filename-handler nil + "Function to call to process filename handled by recentf. +It is passed a filename to give a chance to transform it. +If it returns nil, the filename is left unchanged." + :group 'recentf + :type '(choice (const :tag "None" nil) + function)) + +;;; Utilities +;; +(defconst recentf-case-fold-search + (memq system-type '(vax-vms windows-nt cygwin)) + "Non-nil if recentf searches and matches should ignore case.") + +(defsubst recentf-string-equal (s1 s2) + "Return non-nil if strings S1 and S2 have identical contents. +Ignore case if `recentf-case-fold-search' is non-nil." + (if recentf-case-fold-search + (string-equal (downcase s1) (downcase s2)) + (string-equal s1 s2))) + +(defsubst recentf-string-lessp (s1 s2) + "Return non-nil if string S1 is less than S2 in lexicographic order. +Ignore case if `recentf-case-fold-search' is non-nil." + (if recentf-case-fold-search + (string-lessp (downcase s1) (downcase s2)) + (string-lessp s1 s2))) + +(defun recentf-string-member (elt list) + "Return non-nil if ELT is an element of LIST. +The value is actually the tail of LIST whose car is ELT. +ELT must be a string and LIST a list of strings. +Ignore case if `recentf-case-fold-search' is non-nil." + (while (and list (not (recentf-string-equal elt (car list)))) + (setq list (cdr list))) + list) + +(defsubst recentf-trunc-list (l n) + "Return from L the list of its first N elements." + (let (nl) + (while (and l (> n 0)) + (setq nl (cons (car l) nl) + n (1- n) + l (cdr l))) + (nreverse nl))) + +(defun recentf-dump-variable (variable &optional limit) + "Insert a \"(setq VARIABLE value)\" in the current buffer. +When the value of VARIABLE is a list, optional argument LIMIT +specifies a maximum number of elements to insert. By default insert +the full list." + (let ((value (symbol-value variable))) + (if (atom value) + (insert (format "\n(setq %S %S)\n" variable value)) + (when (and (integerp limit) (> limit 0)) + (setq value (recentf-trunc-list value limit))) + (insert (format "\n(setq %S\n '(" variable)) + (dolist (e value) + (insert (format "\n %S" e))) + (insert "\n ))\n")))) + +(defvar recentf-auto-cleanup-timer nil + "Timer used to automatically cleanup the recent list. +See also the option `recentf-auto-cleanup'.") + +(defun recentf-auto-cleanup () + "Automatic cleanup of the recent list." + (when (timerp recentf-auto-cleanup-timer) + (cancel-timer recentf-auto-cleanup-timer)) + (when recentf-mode + (setq recentf-auto-cleanup-timer + (cond + ((eq 'mode recentf-auto-cleanup) + (recentf-cleanup) + nil) + ((numberp recentf-auto-cleanup) + (run-with-idle-timer + recentf-auto-cleanup t 'recentf-cleanup)) + ((stringp recentf-auto-cleanup) + (run-at-time + recentf-auto-cleanup nil 'recentf-cleanup)))))) + +;;; File functions +;; +(defsubst recentf-push (filename) + "Push FILENAME into the recent list, if it isn't there yet. +If it is there yet, move it at the beginning of the list. +If `recentf-case-fold-search' is non-nil, ignore case when comparing +filenames." + (let ((m (recentf-string-member filename recentf-list))) + (and m (setq recentf-list (delq (car m) recentf-list))) + (push filename recentf-list))) + +(defsubst recentf-expand-file-name (name) + "Convert filename NAME to absolute, and canonicalize it. +See also the function `expand-file-name'. +If defined, call the function `recentf-filename-handler' +to postprocess the canonical name." + (let* ((filename (expand-file-name name))) + (or (and recentf-filename-handler + (funcall recentf-filename-handler filename)) + filename))) + +(defun recentf-include-p (filename) + "Return non-nil if FILENAME should be included in the recent list. +That is, if it doesn't match any of the `recentf-exclude' checks." + (let ((case-fold-search recentf-case-fold-search) + (checks recentf-exclude) + (keepit t)) + (while (and checks keepit) + (setq keepit (condition-case nil + (not (if (stringp (car checks)) + ;; A regexp + (string-match (car checks) filename) + ;; A predicate + (funcall (car checks) filename))) + (error nil)) + checks (cdr checks))) + keepit)) + +(defun recentf-keep-p (filename) + "Return non-nil if FILENAME should be kept in the recent list. +That is, if it matches any of the `recentf-keep' checks." + (let* ((case-fold-search recentf-case-fold-search) + (checks recentf-keep) + (keepit (null checks))) + (while (and checks (not keepit)) + (setq keepit (condition-case nil + (if (stringp (car checks)) + ;; A regexp + (string-match (car checks) filename) + ;; A predicate + (funcall (car checks) filename)) + (error nil)) + checks (cdr checks))) + keepit)) + +(defsubst recentf-add-file (filename) + "Add or move FILENAME at the beginning of the recent list. +Does nothing if the name satisfies any of the `recentf-exclude' +regexps or predicates." + (setq filename (recentf-expand-file-name filename)) + (when (recentf-include-p filename) + (recentf-push filename))) + +(defsubst recentf-remove-if-non-kept (filename) + "Remove FILENAME from the recent list, if file is not kept. +Return non-nil if FILENAME has been removed." + (unless (recentf-keep-p filename) + (let ((m (recentf-string-member + (recentf-expand-file-name filename) recentf-list))) + (and m (setq recentf-list (delq (car m) recentf-list)))))) + +(defsubst recentf-directory-compare (f1 f2) + "Compare absolute filenames F1 and F2. +First compare directories, then filenames sans directory. +Return non-nil if F1 is less than F2." + (let ((d1 (file-name-directory f1)) + (d2 (file-name-directory f2))) + (if (recentf-string-equal d1 d2) + (recentf-string-lessp (file-name-nondirectory f1) + (file-name-nondirectory f2)) + (recentf-string-lessp d1 d2)))) + +;;; Menu building +;; +(defvar recentf-menu-items-for-commands + (list ["Cleanup list" + recentf-cleanup + :help "Remove all excluded and non-kept files from the recent list" + :active t] + ["Edit list..." + recentf-edit-list + :help "Edit the files that are kept in the recent list" + :active t] + ["Save list now" + recentf-save-list + :help "Save the list of recently opened files now" + :active t] + ["Options..." + (customize-group "recentf") + :help "Customize recently opened files menu and options" + :active t] + ) + "List of menu items for recentf commands.") + +(defvar recentf-menu-filter-commands nil + "This variable can be used by menu filters to setup their own command menu. +If non-nil it must contain a list of valid menu-items to be appended +to the recent file list part of the menu. Before calling a menu +filter function this variable is reset to nil.") + +(defsubst recentf-elements (n) + "Return a list of the first N elements of the recent list." + (recentf-trunc-list recentf-list n)) + +(defsubst recentf-make-menu-element (menu-item menu-value) + "Create a new menu-element. +A menu element is a pair (MENU-ITEM . MENU-VALUE), where MENU-ITEM is +the menu item string displayed. MENU-VALUE is the file to be open +when the corresponding MENU-ITEM is selected. Or it is a +pair (SUB-MENU-TITLE . MENU-ELEMENTS) where SUB-MENU-TITLE is a +sub-menu title and MENU-ELEMENTS is the list of menu elements in the +sub-menu." + (cons menu-item menu-value)) + +(defsubst recentf-menu-element-item (e) + "Return the item part of the menu-element E." + (car e)) + +(defsubst recentf-menu-element-value (e) + "Return the value part of the menu-element E." + (cdr e)) + +(defsubst recentf-set-menu-element-item (e item) + "Change the item part of menu-element E to ITEM." + (setcar e item)) + +(defsubst recentf-set-menu-element-value (e value) + "Change the value part of menu-element E to VALUE." + (setcdr e value)) + +(defsubst recentf-sub-menu-element-p (e) + "Return non-nil if menu-element E defines a sub-menu." + (consp (recentf-menu-element-value e))) + +(defsubst recentf-make-default-menu-element (file) + "Make a new default menu element with FILE. +This a menu element (FILE . FILE)." + (recentf-make-menu-element file file)) + +(defsubst recentf-menu-elements (n) + "Return a list of the first N default menu elements from the recent list. +See also `recentf-make-default-menu-element'." + (mapcar 'recentf-make-default-menu-element + (recentf-elements n))) + +(defun recentf-apply-menu-filter (filter l) + "Apply function FILTER to the list of menu-elements L. +It takes care of sub-menu elements in L and recursively apply FILTER +to them. It is guaranteed that FILTER receives only a list of single +menu-elements (no sub-menu)." + (if (and l (functionp filter)) + (let ((case-fold-search recentf-case-fold-search) + elts others) + ;; split L into two sub-listes, one of sub-menus elements and + ;; another of single menu elements. + (dolist (elt l) + (if (recentf-sub-menu-element-p elt) + (push elt elts) + (push elt others))) + ;; Apply FILTER to single elements. + (when others + (setq others (funcall filter (nreverse others)))) + ;; Apply FILTER to sub-menu elements. + (setq l nil) + (dolist (elt elts) + (recentf-set-menu-element-value + elt (recentf-apply-menu-filter + filter (recentf-menu-element-value elt))) + (push elt l)) + ;; Return the new filtered menu element list. + (nconc l others)) + l)) + +(defun recentf-make-menu-items () + "Make menu items from the recent list." + (setq recentf-menu-filter-commands nil) + (let ((file-items + (mapcar 'recentf-make-menu-item + (recentf-apply-menu-filter + recentf-menu-filter + (recentf-menu-elements recentf-max-menu-items))))) + (append (or file-items (list ["No files" t + :help "No recent file to open" + :active nil])) + (and (< recentf-max-menu-items (length recentf-list)) + (list ["More..." recentf-open-more-files + :help "Open files that are not in the menu" + :active t])) + (and recentf-menu-filter-commands + (cons "---" + recentf-menu-filter-commands)) + (and recentf-menu-append-commands-flag + (cons "---" + recentf-menu-items-for-commands))))) + +(defsubst recentf-make-menu-item (elt) + "Make a menu item from menu element ELT." + (let ((item (recentf-menu-element-item elt)) + (value (recentf-menu-element-value elt))) + (if (recentf-sub-menu-element-p elt) + (cons item (mapcar 'recentf-make-menu-item value)) + (vector item (list recentf-menu-action value) + :help (concat "Open " value) + :active t)))) + +(defsubst recentf-menu-bar () + "Return the keymap of the global menu bar." + (lookup-key global-map [menu-bar])) + +(defun recentf-clear-data () + "Clear data used to build the recentf menu. +This forces a rebuild of the menu." + (easy-menu-remove-item (recentf-menu-bar) + recentf-menu-path recentf-menu-title) + (setq recentf-data-cache nil)) + +;;; Predefined menu filters +;; +(defsubst recentf-sort-ascending (l) + "Sort the list of menu elements L in ascending order. +The MENU-ITEM part of each menu element is compared." + (sort (copy-sequence l) + #'(lambda (e1 e2) + (recentf-string-lessp + (recentf-menu-element-item e1) + (recentf-menu-element-item e2))))) + +(defsubst recentf-sort-descending (l) + "Sort the list of menu elements L in descending order. +The MENU-ITEM part of each menu element is compared." + (sort (copy-sequence l) + #'(lambda (e1 e2) + (recentf-string-lessp + (recentf-menu-element-item e2) + (recentf-menu-element-item e1))))) + +(defsubst recentf-sort-basenames-ascending (l) + "Sort the list of menu elements L in ascending order. +Only filenames sans directory are compared." + (sort (copy-sequence l) + #'(lambda (e1 e2) + (recentf-string-lessp + (file-name-nondirectory (recentf-menu-element-value e1)) + (file-name-nondirectory (recentf-menu-element-value e2)))))) + +(defsubst recentf-sort-basenames-descending (l) + "Sort the list of menu elements L in descending order. +Only filenames sans directory are compared." + (sort (copy-sequence l) + #'(lambda (e1 e2) + (recentf-string-lessp + (file-name-nondirectory (recentf-menu-element-value e2)) + (file-name-nondirectory (recentf-menu-element-value e1)))))) + +(defsubst recentf-sort-directories-ascending (l) + "Sort the list of menu elements L in ascending order. +Compares directories then filenames to order the list." + (sort (copy-sequence l) + #'(lambda (e1 e2) + (recentf-directory-compare + (recentf-menu-element-value e1) + (recentf-menu-element-value e2))))) + +(defsubst recentf-sort-directories-descending (l) + "Sort the list of menu elements L in descending order. +Compares directories then filenames to order the list." + (sort (copy-sequence l) + #'(lambda (e1 e2) + (recentf-directory-compare + (recentf-menu-element-value e2) + (recentf-menu-element-value e1))))) + +(defun recentf-show-basenames (l &optional no-dir) + "Filter the list of menu elements L to show filenames sans directory. +When a filename is duplicated, it is appended a sequence number if +optional argument NO-DIR is non-nil, or its directory otherwise." + (let (filtered-names filtered-list full name counters sufx) + (dolist (elt l (nreverse filtered-list)) + (setq full (recentf-menu-element-value elt) + name (file-name-nondirectory full)) + (if (not (member name filtered-names)) + (push name filtered-names) + (if no-dir + (if (setq sufx (assoc name counters)) + (setcdr sufx (1+ (cdr sufx))) + (setq sufx 1) + (push (cons name sufx) counters)) + (setq sufx (file-name-directory full))) + (setq name (format "%s(%s)" name sufx))) + (push (recentf-make-menu-element name full) filtered-list)))) + +(defsubst recentf-show-basenames-ascending (l) + "Filter the list of menu elements L to show filenames sans directory. +Filenames are sorted in ascending order. +This filter combines the `recentf-sort-basenames-ascending' and +`recentf-show-basenames' filters." + (recentf-show-basenames (recentf-sort-basenames-ascending l))) + +(defsubst recentf-show-basenames-descending (l) + "Filter the list of menu elements L to show filenames sans directory. +Filenames are sorted in descending order. +This filter combines the `recentf-sort-basenames-descending' and +`recentf-show-basenames' filters." + (recentf-show-basenames (recentf-sort-basenames-descending l))) + +(defun recentf-relative-filter (l) + "Filter the list of menu-elements L to show relative filenames. +Filenames are relative to the `default-directory'." + (mapcar #'(lambda (menu-element) + (let* ((ful (recentf-menu-element-value menu-element)) + (rel (file-relative-name ful default-directory))) + (if (string-match "^\\.\\." rel) + menu-element + (recentf-make-menu-element rel ful)))) + l)) + +;;; Rule based menu filters +;; +(defcustom recentf-arrange-rules + '( + ("Elisp files (%d)" ".\\.el$") + ("Java files (%d)" ".\\.java$") + ("C/C++ files (%d)" "c\\(pp\\)?$") + ) + "*List of rules used by `recentf-arrange-by-rule' to build sub-menus. +A rule is a pair (SUB-MENU-TITLE . MATCHER). SUB-MENU-TITLE is the +displayed title of the sub-menu where a '%d' `format' pattern is +replaced by the number of items in the sub-menu. MATCHER is a regexp +or a list of regexps. Items matching one of the regular expressions in +MATCHER are added to the corresponding sub-menu." + :group 'recentf-filters + :type '(repeat (cons string (repeat regexp))) + :set 'recentf-menu-customization-changed) + +(defcustom recentf-arrange-by-rule-others "Other files (%d)" + "*Title of the `recentf-arrange-by-rule' sub-menu. +This is for the menu where items that don't match any +`recentf-arrange-rules' are displayed. If nil these items are +displayed in the main recent files menu. A '%d' `format' pattern in +the title is replaced by the number of items in the sub-menu." + :group 'recentf-filters + :type '(choice (const :tag "Main menu" nil) + (string :tag "Title")) + :set 'recentf-menu-customization-changed) + +(defcustom recentf-arrange-by-rules-min-items 0 + "*Minimum number of items in a `recentf-arrange-by-rule' sub-menu. +If the number of items in a sub-menu is less than this value the +corresponding sub-menu items are displayed in the main recent files +menu or in the `recentf-arrange-by-rule-others' sub-menu if +defined." + :group 'recentf-filters + :type 'number + :set 'recentf-menu-customization-changed) + +(defcustom recentf-arrange-by-rule-subfilter nil + "*Function called by a rule based filter to filter sub-menu elements. +A nil value means no filter. See also `recentf-menu-filter'. +You can't use another rule based filter here." + :group 'recentf-filters + :type '(choice (const nil) function) + :set (lambda (variable value) + (when (memq value '(recentf-arrange-by-rule + recentf-arrange-by-mode + recentf-arrange-by-dir)) + (error "Recursive use of a rule based filter")) + (recentf-menu-customization-changed variable value))) + +(defun recentf-match-rule-p (matcher filename) + "Return non-nil if the rule specified by MATCHER match FILENAME. +See `recentf-arrange-rules' for details on MATCHER." + (if (stringp matcher) + (string-match matcher filename) + (while (and (consp matcher) + (not (string-match (car matcher) filename))) + (setq matcher (cdr matcher))) + matcher)) + +(defun recentf-arrange-by-rule (l) + "Filter the list of menu-elements L. +Arrange them in sub-menus following rules in `recentf-arrange-rules'." + (if (not recentf-arrange-rules) + l + (let ((menus (mapcar #'(lambda (r) (list (car r))) + recentf-arrange-rules)) + menu others min file rules elts count) + (dolist (elt l) + (setq file (recentf-menu-element-value elt) + rules recentf-arrange-rules + elts menus + menu nil) + (while (and (not menu) rules) + (when (recentf-match-rule-p (cdar rules) file) + (setq menu (car elts)) + (recentf-set-menu-element-value + menu (cons elt (recentf-menu-element-value menu)))) + (setq rules (cdr rules) + elts (cdr elts))) + (unless menu + (push elt others))) + + (setq l nil + min (if (natnump recentf-arrange-by-rules-min-items) + recentf-arrange-by-rules-min-items 0)) + (dolist (menu menus) + (when (setq elts (recentf-menu-element-value menu)) + (setq count (length elts)) + (if (< count min) + (setq others (nconc elts others)) + (recentf-set-menu-element-item + menu (format (recentf-menu-element-item menu) count)) + (recentf-set-menu-element-value + menu (recentf-apply-menu-filter + recentf-arrange-by-rule-subfilter (nreverse elts))) + (push menu l)))) + + (if (and (stringp recentf-arrange-by-rule-others) others) + (nreverse + (cons + (recentf-make-menu-element + (format recentf-arrange-by-rule-others (length others)) + (recentf-apply-menu-filter + recentf-arrange-by-rule-subfilter (nreverse others))) + l)) + (nconc + (nreverse l) + (recentf-apply-menu-filter + recentf-arrange-by-rule-subfilter (nreverse others))))) + )) + +;;; Predefined rule based menu filters +;; +(defun recentf-build-mode-rules () + "Convert `auto-mode-alist' to menu filter rules. +Rules obey `recentf-arrange-rules' format." + (let ((case-fold-search recentf-case-fold-search) + regexp rule-name rule rules) + (dolist (mode auto-mode-alist) + (setq regexp (car mode) + mode (cdr mode)) + (when (symbolp mode) + (setq rule-name (symbol-name mode)) + (if (string-match "\\(.*\\)-mode$" rule-name) + (setq rule-name (match-string 1 rule-name))) + (setq rule-name (concat rule-name " (%d)") + rule (assoc rule-name rules)) + (if rule + (setcdr rule (cons regexp (cdr rule))) + (push (list rule-name regexp) rules)))) + ;; It is important to preserve auto-mode-alist order + ;; to ensure the right file <-> mode association + (nreverse rules))) + +(defun recentf-arrange-by-mode (l) + "Split the list of menu-elements L into sub-menus by major mode." + (let ((recentf-arrange-rules (recentf-build-mode-rules)) + (recentf-arrange-by-rule-others "others (%d)")) + (recentf-arrange-by-rule l))) + +(defun recentf-build-dir-rules (l) + "Convert directories in menu-elements L to menu filter rules. +Rules obey `recentf-arrange-rules' format." + (let (dirs) + (mapcar #'(lambda (e) + (let ((dir (file-name-directory + (recentf-menu-element-value e)))) + (or (recentf-string-member dir dirs) + (push dir dirs)))) + l) + (mapcar #'(lambda (d) + (cons (concat d " (%d)") + (concat "\\`" d))) + (nreverse (sort dirs 'recentf-string-lessp))))) + +(defun recentf-file-name-nondir (l) + "Filter the list of menu-elements L to show filenames sans directory. +This simplified version of `recentf-show-basenames' does not handle +duplicates. It is used by `recentf-arrange-by-dir' as its +`recentf-arrange-by-rule-subfilter'." + (mapcar #'(lambda (e) + (recentf-make-menu-element + (file-name-nondirectory (recentf-menu-element-value e)) + (recentf-menu-element-value e))) + l)) + +(defun recentf-arrange-by-dir (l) + "Split the list of menu-elements L into sub-menus by directory." + (let ((recentf-arrange-rules (recentf-build-dir-rules l)) + (recentf-arrange-by-rule-subfilter 'recentf-file-name-nondir) + recentf-arrange-by-rule-others) + (nreverse (recentf-arrange-by-rule l)))) + +;;; Ring of menu filters +;; +(defvar recentf-filter-changer-state nil + "Used by `recentf-filter-changer' to hold its state.") + +(defcustom recentf-filter-changer-alist + '( + (recentf-arrange-by-mode . "*Files by Mode*") + (recentf-arrange-by-dir . "*Files by Directory*") + (recentf-arrange-by-rule . "*Files by User Rule*") + ) + "*List of filters managed by `recentf-filter-changer'. +Each filter is defined by a pair (FUNCTION . LABEL), where FUNCTION is +the filter function, and LABEL is the menu item displayed to select +that filter." + :group 'recentf-filters + :type '(repeat (cons function string)) + :set (lambda (variable value) + (setq recentf-filter-changer-state nil) + (recentf-menu-customization-changed variable value))) + +(defun recentf-filter-changer-goto-next () + "Go to the next filter available. +See `recentf-filter-changer'." + (setq recentf-filter-changer-state (cdr recentf-filter-changer-state)) + (recentf-clear-data)) + +(defsubst recentf-filter-changer-get-current () + "Get the current filter available. +See `recentf-filter-changer'." + (unless recentf-filter-changer-state + (setq recentf-filter-changer-state recentf-filter-changer-alist)) + (car recentf-filter-changer-state)) + +(defsubst recentf-filter-changer-get-next () + "Get the next filter available. +See `recentf-filter-changer'." + ;; At this point the current filter is the first element of + ;; `recentf-filter-changer-state'. + (car (or (cdr recentf-filter-changer-state) + ;; There is no next element in + ;; `recentf-filter-changer-state', so loop back to the + ;; first element of `recentf-filter-changer-alist'. + recentf-filter-changer-alist))) + +(defun recentf-filter-changer (l) + "Manage a ring of menu filters. +`recentf-filter-changer-alist' defines the filters in the ring. +Filtering of L is delegated to the current filter in the ring. A +filter menu item is displayed allowing to dynamically activate the +next filter in the ring. If the filter ring is empty, L is left +unchanged." + (let ((filter (recentf-filter-changer-get-current))) + (when filter + (setq l (recentf-apply-menu-filter (car filter) l) + filter (recentf-filter-changer-get-next)) + (when filter + (setq recentf-menu-filter-commands + (list (vector (cdr filter) + '(recentf-filter-changer-goto-next) + t))))) + l)) + +;;; Common dialog stuff +;; +(defun recentf-cancel-dialog (&rest ignore) + "Cancel the current dialog. +IGNORE arguments." + (interactive) + (kill-buffer (current-buffer)) + (message "Dialog canceled")) + +(defun recentf-dialog-goto-first (widget-type) + "Move the cursor to the first WIDGET-TYPE in current dialog. +Go to the beginning of buffer if not found." + (goto-char (point-min)) + (condition-case nil + (let (done) + (widget-move 1) + (while (not done) + (if (eq widget-type (widget-type (widget-at (point)))) + (setq done t) + (widget-move 1)))) + (goto-char (point-min)))) + +(defvar recentf-dialog-mode-map + (let ((km (make-sparse-keymap))) + (set-keymap-parent km widget-keymap) + (define-key km "q" 'recentf-cancel-dialog) + (define-key km [down-mouse-1] 'widget-button-click) + km) + "Keymap used in recentf dialogs.") + +(define-derived-mode recentf-dialog-mode nil "recentf-dialog" + "Major mode of recentf dialogs. + +\\{recentf-dialog-mode-map}" + :syntax-table nil + :abbrev-table nil + (setq truncate-lines t)) + +(defmacro recentf-dialog (name &rest forms) + "Show a dialog buffer with NAME, setup with FORMS." + (declare (indent 1) (debug t)) + `(with-current-buffer (get-buffer-create ,name) + ;; Cleanup buffer + (let ((inhibit-read-only t) + (ol (overlay-lists))) + (mapc 'delete-overlay (car ol)) + (mapc 'delete-overlay (cdr ol)) + (erase-buffer)) + (recentf-dialog-mode) + ,@forms + (widget-setup) + (switch-to-buffer (current-buffer)))) + +;;; Hooks +;; +(defun recentf-track-opened-file () + "Insert the name of the file just opened or written into the recent list." + (and buffer-file-name + (recentf-add-file buffer-file-name)) + ;; Must return nil because it is run from `write-file-functions'. + nil) + +(defun recentf-track-closed-file () + "Update the recent list when a buffer is killed. +That is, remove a non kept file from the recent list." + (and buffer-file-name + (recentf-remove-if-non-kept buffer-file-name))) + +(defun recentf-update-menu () + "Update the recentf menu from the current recent list." + (let ((cache (cons default-directory recentf-list))) + ;; Does nothing, if nothing has changed. + (unless (equal recentf-data-cache cache) + (setq recentf-data-cache cache) + (condition-case err + (easy-menu-add-item + (recentf-menu-bar) recentf-menu-path + (easy-menu-create-menu recentf-menu-title + (recentf-make-menu-items)) + recentf-menu-before) + (error + (message "recentf update menu failed: %s" + (error-message-string err))))))) + +(defconst recentf-used-hooks + '( + (find-file-hook recentf-track-opened-file) + (write-file-functions recentf-track-opened-file) + (kill-buffer-hook recentf-track-closed-file) + (menu-bar-update-hook recentf-update-menu) + (kill-emacs-hook recentf-save-list) + ) + "Hooks used by recentf.") + +(defsubst recentf-enabled-p () + "Return non-nil if recentf mode is currently enabled." + (memq 'recentf-update-menu menu-bar-update-hook)) + +;;; Commands +;; + +;;; Edit list dialog +;; +(defvar recentf-edit-list nil) + +(defun recentf-edit-list-select (widget &rest ignore) + "Toggle a file selection based on the checkbox WIDGET state. +IGNORE other arguments." + (let ((value (widget-get widget :tag)) + (check (widget-value widget))) + (if check + (add-to-list 'recentf-edit-list value) + (setq recentf-edit-list (delq value recentf-edit-list))) + (message "%s %sselected" value (if check "" "un")))) + +(defun recentf-edit-list-validate (&rest ignore) + "Process the recent list when the edit list dialog is committed. +IGNORE arguments." + (if recentf-edit-list + (let ((i 0)) + (dolist (e recentf-edit-list) + (setq recentf-list (delq e recentf-list) + i (1+ i))) + (kill-buffer (current-buffer)) + (message "%S file(s) removed from the list" i) + (recentf-clear-data)) + (message "No file selected"))) + +(defun recentf-edit-list () + "Show a dialog to delete selected files from the recent list." + (interactive) + (recentf-dialog (format "*%s - Edit list*" recentf-menu-title) + (set (make-local-variable 'recentf-edit-list) nil) + (widget-insert + "Click on OK to delete selected files from the recent list. +Click on Cancel or type `q' to cancel.\n") + ;; Insert the list of files as checkboxes + (dolist (item recentf-list) + (widget-create 'checkbox + :value nil ; unselected checkbox + :format "\n %[%v%] %t" + :tag item + :notify 'recentf-edit-list-select)) + (widget-insert "\n\n") + (widget-create + 'push-button + :notify 'recentf-edit-list-validate + :help-echo "Delete selected files from the recent list" + "Ok") + (widget-insert " ") + (widget-create + 'push-button + :notify 'recentf-cancel-dialog + "Cancel") + (recentf-dialog-goto-first 'checkbox))) + +;;; Open file dialog +;; +(defun recentf-open-files-action (widget &rest ignore) + "Open the file stored in WIDGET's value when notified. +IGNORE other arguments." + (kill-buffer (current-buffer)) + (funcall recentf-menu-action (widget-value widget))) + +(defun recentf-open-files-item (menu-element) + "Return a widget to display MENU-ELEMENT in a dialog buffer." + (if (consp (cdr menu-element)) + ;; Represent a sub-menu with a tree widget + `(tree-widget + :open t + :match ignore + :node (item :tag ,(car menu-element) + :sample-face bold + :format "%{%t%}:\n") + ,@(mapcar 'recentf-open-files-item + (cdr menu-element))) + ;; Represent a single file with a link widget + `(link :tag ,(car menu-element) + :button-prefix "" + :button-suffix "" + :button-face default + :format "%[%t%]\n" + :help-echo ,(concat "Open " (cdr menu-element)) + :action recentf-open-files-action + ,(cdr menu-element)))) + +(defun recentf-open-files (&optional files buffer-name) + "Show a dialog to open a recent file. +If optional argument FILES is non-nil, it is a list of recently-opened +files to choose from. It defaults to the whole recent list. +If optional argument BUFFER-NAME is non-nil, it is a buffer name to +use for the dialog. It defaults to \"*`recentf-menu-title'*\"." + (interactive) + (recentf-dialog (or buffer-name (format "*%s*" recentf-menu-title)) + (widget-insert "Click on a file to open it. +Click on Cancel or type `q' to cancel.\n" ) + ;; Use a L&F that looks like the recentf menu. + (tree-widget-set-theme "folder") + (apply 'widget-create + `(group + :indent 2 + :format "\n%v\n" + ,@(mapcar 'recentf-open-files-item + (recentf-apply-menu-filter + recentf-menu-filter + (mapcar 'recentf-make-default-menu-element + (or files recentf-list)))))) + (widget-create + 'push-button + :notify 'recentf-cancel-dialog + "Cancel") + (recentf-dialog-goto-first 'link))) + +(defun recentf-open-more-files () + "Show a dialog to open a recent file that is not in the menu." + (interactive) + (recentf-open-files (nthcdr recentf-max-menu-items recentf-list) + (format "*%s - More*" recentf-menu-title))) + +;;; Save/load/cleanup the recent list +;; +(defconst recentf-save-file-header + ";;; Automatically generated by `recentf' on %s.\n" + "Header to be written into the `recentf-save-file'.") + +(defconst recentf-save-file-coding-system + (if (coding-system-p 'utf-8-emacs) + 'utf-8-emacs + 'emacs-mule) + "Coding system of the file `recentf-save-file'.") + +(defun recentf-save-list () + "Save the recent list. +Write data into the file specified by `recentf-save-file'." + (interactive) + (condition-case error + (with-temp-buffer + (erase-buffer) + (set-buffer-file-coding-system recentf-save-file-coding-system) + (insert (format recentf-save-file-header (current-time-string))) + (recentf-dump-variable 'recentf-list recentf-max-saved-items) + (recentf-dump-variable 'recentf-filter-changer-state) + (insert "\n \n;;; Local Variables:\n" + (format ";;; coding: %s\n" recentf-save-file-coding-system) + ";;; End:\n") + (write-file (expand-file-name recentf-save-file)) + nil) + (error + (warn "recentf mode: %s" (error-message-string error))))) + +(defun recentf-load-list () + "Load a previously saved recent list. +Read data from the file specified by `recentf-save-file'. +When `recentf-initialize-file-name-history' is non-nil, initialize an +empty `file-name-history' with the recent list." + (interactive) + (let ((file (expand-file-name recentf-save-file))) + (when (file-readable-p file) + (load-file file) + (and recentf-initialize-file-name-history + (not file-name-history) + (setq file-name-history (mapcar 'abbreviate-file-name + recentf-list)))))) + +(defun recentf-cleanup () + "Remove all non-kept and excluded files from the recent list." + (interactive) + (message "Cleaning up the recentf list...") + (let ((n 0) newlist) + (dolist (f recentf-list) + (if (and (recentf-include-p f) + (recentf-keep-p f)) + (push f newlist) + (setq n (1+ n)) + (message "File %s removed from the recentf list" f))) + (message "Cleaning up the recentf list...done (%d removed)" n) + (setq recentf-list (nreverse newlist)))) + +;;;###autoload +(define-minor-mode recentf-mode + "Toggle recentf mode. +With prefix argument ARG, turn on if positive, otherwise off. +Returns non-nil if the new state is enabled. + +When recentf mode is enabled, it maintains a menu for visiting files +that were operated on recently." + :global t + :group 'recentf + (unless (and recentf-mode (recentf-enabled-p)) + (if recentf-mode + (recentf-load-list) + (recentf-save-list)) + (recentf-auto-cleanup) + (recentf-clear-data) + (let ((hook-setup (if recentf-mode 'add-hook 'remove-hook))) + (dolist (hook recentf-used-hooks) + (apply hook-setup hook))) + (run-hooks 'recentf-mode-hook) + (when (interactive-p) + (message "Recentf mode %sabled" (if recentf-mode "en" "dis")))) + recentf-mode) + +(provide 'recentf) + +(run-hooks 'recentf-load-hook) + +;; arch-tag: 78f1eec9-0d16-4d19-a4eb-2e4529edb62a +;;; recentf.el ends here