* elmo.el (elmo-folder-open-internal-p): New luna method.
[elisp/wanderlust.git] / elmo / elmo-filter.el
index 10c469c..65aacfa 100644 (file)
@@ -3,6 +3,7 @@
 ;; Copyright (C) 1998,1999,2000 Yuuichi Teranishi <teranisi@gohome.org>
 
 ;; Author: Yuuichi Teranishi <teranisi@gohome.org>
+;;     Hiroya Murata <lapis-lazuli@pop06.odn.ne.jp>
 ;; Keywords: mail, net news
 
 ;; This file is part of ELMO (Elisp Library for Message Orchestration).
 ;;; Code:
 ;;
 (require 'elmo)
+(require 'elmo-signal)
+(require 'elmo-msgdb)
+
+(defvar elmo-filter-number-filename "number-list"
+  "File name for message number database.")
 
 ;;; ELMO filter folder
 (eval-and-compile
   (luna-define-class elmo-filter-folder (elmo-folder)
-                    (condition target require-msgdb))
+                    (condition target require-msgdb number-list flag-count))
   (luna-define-internal-accessors 'elmo-filter-folder))
 
 (luna-define-method elmo-folder-initialize ((folder elmo-filter-folder)
                                            name)
   (let (pair)
     (setq pair (elmo-parse-search-condition name))
-    (elmo-filter-folder-set-condition-internal folder
-                                              (car pair))
+    (elmo-filter-folder-set-condition-internal folder (car pair))
     (if (string-match "^ */\\(.*\\)$" (cdr pair))
        (elmo-filter-folder-set-target-internal
         folder
-        (elmo-make-folder (elmo-match-string 1 (cdr pair))))
+        (elmo-get-folder (elmo-match-string 1 (cdr pair))))
       (error "Folder syntax error `%s'" (elmo-folder-name-internal folder)))
     (elmo-filter-folder-set-require-msgdb-internal
      folder
      (elmo-folder-search-requires-msgdb-p
       (elmo-filter-folder-target-internal folder)
       (elmo-filter-folder-condition-internal folder)))
+    (elmo-filter-folder-set-number-list-internal folder 'not-loaded)
+    (elmo-filter-connect-signals
+     folder
+     (elmo-filter-folder-target-internal folder))
     folder))
 
+(defun elmo-filter-connect-signals (folder target)
+  (elmo-connect-signal
+   target 'flag-changing folder
+   (elmo-define-signal-handler (folder target number old-flags new-flags)
+     (elmo-filter-add-flag-count folder old-flags -1)
+     (elmo-filter-add-flag-count folder new-flags)
+     (elmo-emit-signal 'flag-changing folder number old-flags new-flags))
+   (elmo-define-signal-filter (folder target number)
+     (memq number (elmo-folder-list-messages folder nil t))))
+  (elmo-connect-signal
+   target 'flag-changed folder
+   (elmo-define-signal-handler (folder target numbers)
+     (let ((filterd (elmo-list-filter
+                    (elmo-folder-list-messages folder nil t)
+                    numbers)))
+       (when filterd
+        (elmo-emit-signal 'flag-changed folder filterd)))))
+  (elmo-connect-signal
+   target 'status-changed folder
+   (elmo-define-signal-handler (folder target numbers)
+     (let ((filterd (elmo-list-filter
+                    (elmo-folder-list-messages folder nil t)
+                    numbers)))
+       (when filterd
+        (elmo-emit-signal 'status-changed folder filterd)))))
+  (elmo-connect-signal
+   target 'update-overview folder
+   (elmo-define-signal-handler (folder target number)
+     (elmo-emit-signal 'update-overview folder number))
+   (elmo-define-signal-filter (folder target number)
+     (memq number (elmo-folder-list-messages folder nil t)))))
+
+(defun elmo-filter-number-list-load (dir)
+  (elmo-object-load
+   (expand-file-name elmo-filter-number-filename dir)))
+
+(defun elmo-filter-number-list-save (dir number-list)
+  (elmo-object-save
+   (expand-file-name elmo-filter-number-filename dir)
+   number-list))
+
+(defun elmo-filter-folder-number-list-loaded-p (folder)
+  (listp (elmo-filter-folder-number-list-internal folder)))
+
+(defun elmo-filter-folder-number-list (folder)
+  (let ((numbers (elmo-filter-folder-number-list-internal folder)))
+    (if (listp numbers)
+       numbers
+      (elmo-filter-folder-set-number-list-internal
+       folder
+       (elmo-filter-number-list-load (elmo-folder-msgdb-path folder))))))
+
+(defsubst elmo-filter-folder-countup-message-flags (folder numbers
+                                                          &optional delta)
+  (let ((flag-count (elmo-filter-folder-flag-count-internal folder))
+       (delta (or delta 1))
+       elem)
+    (dolist (number numbers)
+      (dolist (flag (elmo-message-flags folder number))
+       (if (setq elem (assq flag flag-count))
+           (setcdr elem (+ (cdr elem) delta))
+         (setq flag-count (cons (cons flag delta) flag-count)))))
+    (elmo-filter-folder-set-flag-count-internal folder flag-count)))
+
+(defun elmo-filter-add-flag-count (folder flags &optional delta)
+  (let ((flag-count (elmo-filter-folder-flag-count-internal folder))
+       (delta (or delta 1))
+       elem)
+    (dolist (flag flags)
+      (if (setq elem (assq flag flag-count))
+         (setcdr elem (+ (cdr elem) delta))
+       (setq flag-count (cons (cons flag delta) flag-count))))
+    (elmo-filter-folder-set-flag-count-internal folder flag-count)))
+
+(defun elmo-filter-folder-flag-count (folder)
+  (or (elmo-filter-folder-flag-count-internal folder)
+      (elmo-filter-folder-countup-message-flags
+       folder
+       (elmo-folder-list-messages folder t t))))
+
+(defun elmo-filter-folder-copy-flag-count (flag-counts)
+  (mapcar (lambda (pair) (cons (car pair) (cdr pair))) flag-counts))
+
+(luna-define-method elmo-folder-open :after ((folder elmo-filter-folder)
+                                            &optional load-msgdb)
+  (when load-msgdb
+    (elmo-filter-folder-number-list folder)
+    (elmo-filter-folder-flag-count folder)
+    (elmo-folder-msgdb (elmo-filter-folder-target-internal folder))))
+
 (luna-define-method elmo-folder-open-internal ((folder elmo-filter-folder))
   (elmo-folder-open-internal (elmo-filter-folder-target-internal folder)))
 
-(luna-define-method elmo-folder-msgdb :around ((folder elmo-filter-folder))
-  ;; Load target's msgdb if required.
-  (if (elmo-filter-folder-require-msgdb-internal folder)
-      (elmo-folder-msgdb (elmo-filter-folder-target-internal folder)))
-  ;; Load msgdb of itself.
-  (luna-call-next-method))
+(luna-define-method elmo-folder-open-internal-p ((folder elmo-filter-folder))
+  (elmo-folder-open-internal-p (elmo-filter-folder-target-internal folder)))
 
 (luna-define-method elmo-folder-check ((folder elmo-filter-folder))
-  (if (elmo-filter-folder-require-msgdb-internal folder)
-      (elmo-folder-synchronize (elmo-filter-folder-target-internal folder))))
+  (when (elmo-filter-folder-require-msgdb-internal folder)
+    (elmo-folder-synchronize (elmo-filter-folder-target-internal folder))))
 
 (luna-define-method elmo-folder-close-internal ((folder elmo-filter-folder))
   (elmo-folder-close-internal (elmo-filter-folder-target-internal folder)))
 
-(luna-define-method elmo-folder-close :after ((folder elmo-filter-folder))
-  ;; Clear target msgdb if it is used.
-  (if (elmo-filter-folder-require-msgdb-internal folder)
-      (elmo-folder-set-msgdb-internal (elmo-filter-folder-target-internal
-                                      folder) nil)))
+(luna-define-method elmo-folder-close ((folder elmo-filter-folder))
+  (elmo-generic-folder-close folder)
+  (elmo-filter-folder-set-number-list-internal folder 'not-loaded)
+  (elmo-filter-folder-set-flag-count-internal folder nil)
+  (elmo-folder-close (elmo-filter-folder-target-internal folder)))
 
-(luna-define-method elmo-folder-commit :around ((folder elmo-filter-folder))
-  ;; Save target msgdb if it is used.
-  (if (elmo-filter-folder-require-msgdb-internal folder)
-      (elmo-folder-commit (elmo-filter-folder-target-internal folder)))
-  (luna-call-next-method))
+(luna-define-method elmo-folder-commit ((folder elmo-filter-folder))
+  (elmo-folder-commit (elmo-filter-folder-target-internal folder))
+  (when (elmo-folder-persistent-p folder)
+    (elmo-folder-set-info-max-by-numdb
+     folder
+     (elmo-folder-list-messages folder nil 'in-msgdb))
+    (elmo-msgdb-killed-list-save
+     (elmo-folder-msgdb-path folder)
+     (elmo-folder-killed-list-internal folder))
+    (when (elmo-filter-folder-number-list-loaded-p folder)
+      (elmo-filter-number-list-save
+       (elmo-folder-msgdb-path folder)
+       (elmo-filter-folder-number-list folder)))))
 
 (luna-define-method elmo-folder-expand-msgdb-path ((folder
                                                    elmo-filter-folder))
 (luna-define-method elmo-folder-newsgroups ((folder elmo-filter-folder))
   (elmo-folder-newsgroups (elmo-filter-folder-target-internal folder)))
 
-(luna-define-method elmo-find-fetch-strategy
-  ((folder elmo-filter-folder) entity &optional ignore-cache)
+(luna-define-method elmo-find-fetch-strategy ((folder elmo-filter-folder)
+                                             number
+                                             &optional
+                                             ignore-cache
+                                             require-entireness)
   (elmo-find-fetch-strategy
    (elmo-filter-folder-target-internal folder)
-   entity ignore-cache))
+   number ignore-cache require-entireness))
 
 (luna-define-method elmo-folder-get-primitive-list ((folder
                                                     elmo-filter-folder))
-  (list (elmo-filter-folder-target-internal folder)))
+  (elmo-folder-get-primitive-list (elmo-filter-folder-target-internal folder)))
 
 (luna-define-method elmo-folder-contains-type ((folder elmo-filter-folder)
                                               type)
    (elmo-filter-folder-target-internal folder)
    type))
 
-(luna-define-method elmo-folder-msgdb-create ((folder elmo-filter-folder)
-                                             numlist flag-table)
-  (if (elmo-filter-folder-require-msgdb-internal folder)
-      (let* ((target-folder (elmo-filter-folder-target-internal folder))
-            (len (length numlist))
-            (msgdb (elmo-folder-msgdb target-folder))
-            (new-msgdb (elmo-make-msgdb))
-            message-id entity)
-       (when (> len elmo-display-progress-threshold)
-         (elmo-progress-set 'elmo-folder-msgdb-create
-                            len "Creating msgdb..."))
-       (unwind-protect
-           (dolist (number numlist)
-             (setq entity (elmo-msgdb-message-entity msgdb number))
-             (when entity
-               (elmo-msgdb-append-entity new-msgdb entity
-                                         (elmo-msgdb-flags msgdb number)))
-             (elmo-progress-notify 'elmo-folder-msgdb-create))
-         (elmo-progress-clear 'elmo-folder-msgdb-create))
-       new-msgdb)
-    ;; Does not require msgdb.
-    (elmo-folder-msgdb-create
-     (elmo-filter-folder-target-internal folder)
-     numlist flag-table)))
-
 (luna-define-method elmo-folder-append-buffer ((folder elmo-filter-folder)
                                               &optional flag number)
   (elmo-folder-append-buffer
    (elmo-filter-folder-target-internal folder)
    flag number))
 
+(defun elmo-folder-append-messages-filter-* (dst-folder
+                                            src-folder
+                                            numbers
+                                            same-number)
+  (elmo-folder-append-messages dst-folder
+                              (elmo-filter-folder-target-internal src-folder)
+                              numbers
+                              same-number))
+
+(defun elmo-folder-append-messages-*-filter (dst-folder
+                                            src-folder
+                                            numbers
+                                            same-number)
+  (elmo-folder-append-messages (elmo-filter-folder-target-internal dst-folder)
+                              src-folder
+                              numbers
+                              same-number))
+
+(luna-define-method elmo-message-fetch-bodystructure ((folder
+                                                      elmo-filter-folder)
+                                                     number strategy)
+  (elmo-message-fetch-bodystructure
+   (elmo-filter-folder-target-internal folder)
+   number strategy))
+
 (luna-define-method elmo-message-fetch ((folder elmo-filter-folder)
                                        number strategy
-                                       &optional section outbuf unseen)
-  (elmo-message-fetch
-   (elmo-filter-folder-target-internal folder)
-   number strategy section outbuf unseen))
+                                       &optional unseen section)
+  (elmo-message-fetch (elmo-filter-folder-target-internal folder)
+                     number strategy unseen section))
 
 (luna-define-method elmo-folder-delete-messages ((folder elmo-filter-folder)
                                                 numbers)
-  (elmo-folder-delete-messages
-   (elmo-filter-folder-target-internal folder) numbers))
+  (let ((flag-count (elmo-filter-folder-copy-flag-count
+                    (elmo-filter-folder-flag-count-internal folder)))
+       (messages (copy-sequence
+                  (elmo-filter-folder-number-list folder)))
+       success)
+    (elmo-folder-detach-messages folder numbers)
+    (unless (setq success
+                 (elmo-folder-delete-messages
+                  (elmo-filter-folder-target-internal folder) numbers))
+      (elmo-filter-folder-set-flag-count-internal folder flag-count)
+      (elmo-filter-folder-set-number-list-internal folder messages))
+    success))
+
+(luna-define-method elmo-folder-list-messages ((folder elmo-filter-folder)
+                                              &optional visible-only in-msgdb)
+  (let ((list (if in-msgdb
+                 t
+               (elmo-folder-list-messages-internal folder visible-only)))
+       (killed-list (elmo-folder-killed-list-internal folder)))
+    (unless (listp list)
+      ;; Use current list.
+      (setq list (elmo-filter-folder-number-list folder)))
+    (if visible-only
+       (elmo-living-messages list killed-list)
+      (if (and in-msgdb killed-list list)
+         (elmo-uniq-sorted-list
+          (sort (nconc (elmo-number-set-to-number-list killed-list) list) #'<)
+          #'eq)
+       list))))
 
 (luna-define-method elmo-folder-list-messages-internal
   ((folder elmo-filter-folder) &optional nohide)
       ;; not available
       t)))
 
-(defsubst elmo-filter-folder-list-unreads (folder)
-  (elmo-list-filter
-   (elmo-folder-list-messages folder nil 'in-msgdb)
-   (elmo-folder-list-unreads
-    (elmo-filter-folder-target-internal folder))))
-
-(luna-define-method elmo-folder-list-unreads :around ((folder
-                                                      elmo-filter-folder))
-  (if (elmo-filter-folder-require-msgdb-internal folder)
-      (elmo-filter-folder-list-unreads folder)
-    (luna-call-next-method)))
-
-(defsubst elmo-filter-folder-list-importants (folder)
+(luna-define-method elmo-folder-list-flagged ((folder elmo-filter-folder)
+                                             flag
+                                             &optional in-msgdb)
   (elmo-list-filter
-   (elmo-folder-list-messages folder nil 'in-msgdb)
-   (elmo-folder-list-importants
-    (elmo-filter-folder-target-internal folder))))
-
-(luna-define-method elmo-folder-list-importants :around ((folder
-                                                         elmo-filter-folder))
-  (if (elmo-filter-folder-require-msgdb-internal folder)
-      (elmo-filter-folder-list-importants folder)
-    (luna-call-next-method)))
+   (elmo-folder-list-messages folder nil t)
+   (elmo-folder-list-flagged
+    (elmo-filter-folder-target-internal folder) flag in-msgdb)))
 
 (luna-define-method elmo-folder-list-subfolders ((folder elmo-filter-folder)
                                                 &optional one-level)
                   (string= (elmo-filter-value condition) "unread")))
          (setq diff (elmo-folder-diff (elmo-filter-folder-target-internal
                                        folder)))
-         (if (consp diff)
-             (cons (car diff) (car diff))
-           (cons (car diff) (nth 1 diff))))
+         (if (consp (cdr diff))
+             ;; new unread unread
+             (list (car diff) (nth 1 diff) (nth 1 diff))
+           (cons (car diff) (car diff))))
         ((string= "last" (elmo-filter-key condition))
          (luna-call-next-method))
         (t
 (luna-define-method elmo-folder-message-file-p ((folder elmo-filter-folder))
   (elmo-folder-message-file-p (elmo-filter-folder-target-internal folder)))
 
+(luna-define-method elmo-folder-local-p ((folder elmo-filter-folder))
+  (elmo-folder-local-p (elmo-filter-folder-target-internal folder)))
+
 (luna-define-method elmo-folder-plugged-p ((folder elmo-filter-folder))
   (elmo-folder-plugged-p (elmo-filter-folder-target-internal folder)))
 
   (elmo-message-file-name (elmo-filter-folder-target-internal folder)
                          number))
 
-(luna-define-method elmo-folder-flag-as-read :around ((folder
-                                                      elmo-filter-folder)
-                                                     numbers
-                                                     &optional is-local)
-  (elmo-folder-flag-as-read (elmo-filter-folder-target-internal folder)
-                           numbers is-local)
-  (luna-call-next-method))
-
-(luna-define-method elmo-folder-unflag-read :around ((folder
-                                                     elmo-filter-folder)
-                                                    numbers
-                                                    &optional is-local)
-  (elmo-folder-unflag-read (elmo-filter-folder-target-internal folder)
-                          numbers is-local)
-  (luna-call-next-method))
-
-(luna-define-method elmo-folder-flag-as-important :around ((folder
-                                                           elmo-filter-folder)
-                                                          numbers
-                                                          &optional
-                                                          is-local)
-  (elmo-folder-flag-as-important (elmo-filter-folder-target-internal folder)
-                                numbers is-local)
-    (luna-call-next-method))
-
-(luna-define-method elmo-folder-unflag-important :around ((folder
-                                                          elmo-filter-folder)
-                                                         numbers
-                                                         &optional
-                                                         is-local)
-  (elmo-folder-unflag-important (elmo-filter-folder-target-internal folder)
-                               numbers is-local)
-  (luna-call-next-method))
-
-(luna-define-method elmo-folder-flag-as-answered :around ((folder
-                                                          elmo-filter-folder)
-                                                         numbers
-                                                         &optional
-                                                         is-local)
-  (elmo-folder-flag-as-answered (elmo-filter-folder-target-internal folder)
-                               numbers is-local)
-  (luna-call-next-method))
-
-
-(luna-define-method elmo-folder-unflag-answered :around ((folder
-                                                         elmo-filter-folder)
-                                                        numbers
-                                                        &optional
-                                                        is-local)
-  (elmo-folder-unflag-answered (elmo-filter-folder-target-internal folder)
-                              numbers is-local)
-  (luna-call-next-method))
+(luna-define-method elmo-message-flag-available-p ((folder
+                                                   elmo-filter-folder) number
+                                                   flag)
+  (elmo-message-flag-available-p
+   (elmo-filter-folder-target-internal folder)
+   number flag))
+
+(luna-define-method elmo-message-flags ((folder elmo-filter-folder) number)
+  (elmo-message-flags (elmo-filter-folder-target-internal folder)
+                     number))
+
+(luna-define-method elmo-message-set-cached ((folder elmo-filter-folder)
+                                            number cached)
+  (elmo-message-set-cached
+   (elmo-filter-folder-target-internal folder) number cached))
+
+(luna-define-method elmo-message-number ((folder elmo-filter-folder)
+                                        message-id)
+  (elmo-message-number (elmo-filter-folder-target-internal folder)
+                      message-id))
+
+(luna-define-method elmo-message-entity ((folder elmo-filter-folder) key)
+  (elmo-message-entity (elmo-filter-folder-target-internal folder) key))
+
+(luna-define-method elmo-message-entity-parent ((folder elmo-filter-folder)
+                                               entity)
+  (let ((parent (elmo-message-entity-parent
+                (elmo-filter-folder-target-internal folder)
+                entity)))
+    (when (memq (elmo-message-entity-number parent)
+               (elmo-filter-folder-number-list folder))
+      parent)))
+
+(luna-define-method elmo-folder-flag-table ((folder elmo-filter-folder)
+                                           &optional if-exists)
+  (elmo-folder-flag-table (elmo-filter-folder-target-internal folder)
+                         if-exists))
+
+(luna-define-method elmo-folder-close-flag-table ((folder elmo-filter-folder))
+  (elmo-folder-close-flag-table (elmo-filter-folder-target-internal folder)))
+
+(luna-define-method elmo-folder-count-flags ((folder elmo-filter-folder))
+  (elmo-filter-folder-flag-count folder))
+
+(luna-define-method elmo-folder-set-flag ((folder elmo-filter-folder)
+                                         numbers
+                                         flag
+                                         &optional is-local)
+  (elmo-folder-set-flag (elmo-filter-folder-target-internal folder)
+                       numbers flag is-local))
+
+(luna-define-method elmo-folder-unset-flag ((folder elmo-filter-folder)
+                                           numbers
+                                           flag
+                                           &optional is-local)
+  (elmo-folder-unset-flag (elmo-filter-folder-target-internal folder)
+                         numbers flag is-local))
+
+(luna-define-method elmo-message-folder ((folder elmo-filter-folder)
+                                        number)
+  (elmo-message-folder (elmo-filter-folder-target-internal folder) number))
+
+(luna-define-method elmo-message-field ((folder elmo-filter-folder)
+                                       number field &optional type)
+  (elmo-message-field
+   (elmo-filter-folder-target-internal folder) number field type))
+
+(luna-define-method elmo-message-set-field ((folder elmo-filter-folder)
+                                           number field value)
+  (elmo-message-set-field
+   (elmo-filter-folder-target-internal folder) number field value))
+
+(luna-define-method elmo-folder-clear ((folder elmo-filter-folder)
+                                      &optional keep-killed)
+  (unless keep-killed
+    (elmo-folder-set-killed-list-internal folder nil))
+  (elmo-filter-folder-set-number-list-internal folder nil)
+  (elmo-filter-folder-set-flag-count-internal folder nil))
+
+(luna-define-method elmo-folder-synchronize ((folder elmo-filter-folder)
+                                            &optional
+                                            disable-killed
+                                            ignore-msgdb
+                                            no-check
+                                            mask)
+  (let ((killed-list (elmo-folder-killed-list-internal folder))
+       numbers)
+    (unless no-check
+      (when (elmo-filter-folder-require-msgdb-internal folder)
+       (elmo-folder-synchronize (elmo-filter-folder-target-internal folder)
+                                disable-killed
+                                ignore-msgdb
+                                no-check
+                                mask)))
+    (setq numbers (elmo-folder-list-messages folder (not disable-killed)))
+    (when (and numbers
+              (not (elmo-filter-folder-require-msgdb-internal folder)))
+      (elmo-folder-synchronize (elmo-filter-folder-target-internal folder)
+                              'disable-killed
+                              ignore-msgdb
+                              no-check
+                              (if mask
+                                  (elmo-list-filter mask numbers)
+                                numbers)))
+    (when (and disable-killed ignore-msgdb)
+      (elmo-folder-set-killed-list-internal folder nil))
+    (elmo-filter-folder-set-number-list-internal folder numbers)
+    (elmo-filter-folder-set-flag-count-internal folder nil)
+    0))
+
+(luna-define-method elmo-folder-detach-messages ((folder elmo-filter-folder)
+                                                numbers)
+  (elmo-filter-folder-countup-message-flags folder numbers -1)
+  (elmo-filter-folder-set-number-list-internal
+   folder
+   (elmo-list-delete numbers (elmo-filter-folder-number-list folder) #'delq))
+  t)
+
+(luna-define-method elmo-folder-length ((folder elmo-filter-folder))
+  (and (elmo-filter-folder-number-list-loaded-p folder)
+       (length (elmo-filter-folder-number-list-internal folder))))
 
 (require 'product)
 (product-provide (provide 'elmo-filter) (require 'elmo-version))