1 ;;; newst-treeview.el --- Treeview frontend for newsticker.
3 ;; Copyright (C) 2008, 2009 Free Software Foundation, Inc.
5 ;; Author: Ulf Jasper <ulf.jasper@web.de>
6 ;; Filename: newst-treeview.el
7 ;; URL: http://www.nongnu.org/newsticker
9 ;; Keywords: News, RSS, Atom
10 ;; Time-stamp: "15. April 2009, 19:51:17 (ulf)"
12 ;; ======================================================================
14 ;; This file is part of GNU Emacs.
16 ;; GNU Emacs is free software: you can redistribute it and/or modify
17 ;; it under the terms of the GNU General Public License as published by
18 ;; the Free Software Foundation, either version 3 of the License, or
19 ;; (at your option) any later version.
21 ;; GNU Emacs is distributed in the hope that it will be useful,
22 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
23 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 ;; GNU General Public License for more details.
26 ;; You should have received a copy of the GNU General Public License
27 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
29 ;; ======================================================================
34 ;; ======================================================================
39 ;; ======================================================================
41 (require 'newsticker-reader
"newst-reader")
43 (require 'tree-widget
)
46 ;; ======================================================================
48 ;; ======================================================================
49 (defgroup newsticker-treeview nil
50 "Settings for the tree view reader."
51 :group
'newsticker-reader
)
53 (defface newsticker-treeview-face
54 '((((class color
) (background dark
))
55 (:family
"helvetica" :foreground
"misty rose" :bold nil
))
56 (((class color
) (background light
))
57 (:family
"helvetica" :foreground
"black" :bold nil
)))
58 "Face for newsticker tree."
59 :group
'newsticker-treeview
)
61 (defface newsticker-treeview-new-face
62 '((((class color
) (background dark
))
63 (:inherit newsticker-treeview-face
:bold t
))
64 (((class color
) (background light
))
65 (:inherit newsticker-treeview-face
:bold t
)))
66 "Face for newsticker tree."
67 :group
'newsticker-treeview
)
69 (defface newsticker-treeview-old-face
70 '((((class color
) (background dark
))
71 (:inherit newsticker-treeview-face
))
72 (((class color
) (background light
))
73 (:inherit newsticker-treeview-face
)))
74 "Face for newsticker tree."
75 :group
'newsticker-treeview
)
77 (defface newsticker-treeview-immortal-face
78 '((((class color
) (background dark
))
79 (:inherit newsticker-treeview-face
:foreground
"orange" :italic t
))
80 (((class color
) (background light
))
81 (:inherit newsticker-treeview-face
:foreground
"blue" :italic t
)))
82 "Face for newsticker tree."
83 :group
'newsticker-treeview
)
85 (defface newsticker-treeview-obsolete-face
86 '((((class color
) (background dark
))
87 (:inherit newsticker-treeview-face
:strike-through t
))
88 (((class color
) (background light
))
89 (:inherit newsticker-treeview-face
:strike-through t
)))
90 "Face for newsticker tree."
91 :group
'newsticker-treeview
)
93 (defface newsticker-treeview-selection-face
94 '((((class color
) (background dark
))
95 (:background
"#bbbbff"))
96 (((class color
) (background light
))
97 (:background
"#bbbbff")))
98 "Face for newsticker selection."
99 :group
'newsticker-treeview
)
101 (defcustom newsticker-treeview-own-frame
103 "Decides whether newsticker treeview creates and uses its own frame."
105 :group
'newsticker-treeview
)
107 (defcustom newsticker-treeview-treewindow-width
109 "Width of tree window in treeview layout.
110 See also `newsticker-treeview-listwindow-height'."
112 :group
'newsticker-treeview
)
114 (defcustom newsticker-treeview-listwindow-height
116 "Height of list window in treeview layout.
117 See also `newsticker-treeview-treewindow-width'."
119 :group
'newsticker-treeview
)
121 (defcustom newsticker-treeview-automatically-mark-displayed-items-as-old
123 "Decides whether to automatically mark displayed items as old.
124 If t an item is marked as old as soon as it is displayed. This
125 applies to newsticker only."
127 :group
'newsticker-treeview
)
129 (defvar newsticker-groups
131 "List of feed groups, used in the treeview frontend.
132 First element is a string giving the group name. Remaining
133 elements are either strings giving a feed name or lists having
134 the same structure as `newsticker-groups'. (newsticker-groups :=
135 groupdefinition, groupdefinition := groupname groupcontent*,
136 groupcontent := feedname | groupdefinition)
138 Example: (\"Topmost group\" \"feed1\" (\"subgroup1\" \"feed 2\")
141 (defcustom newsticker-groups-filename
142 "~/.newsticker-groups"
143 "Name of the newsticker groups settings file."
145 :group
'newsticker-treeview
)
146 (make-obsolete 'newsticker-groups-filename
'newsticker-dir
)
148 ;; ======================================================================
149 ;;; internal variables
150 ;; ======================================================================
151 (defvar newsticker--treeview-windows nil
)
152 (defvar newsticker--treeview-buffers nil
)
153 (defvar newsticker--treeview-current-feed nil
154 "Feed name of currently shown item.")
155 (defvar newsticker--treeview-current-vfeed nil
)
156 (defvar newsticker--treeview-list-show-feed nil
)
157 (defvar newsticker--saved-window-config nil
)
158 (defvar newsticker--selection-overlay nil
159 "Highlight the selected tree node.")
160 (defvar newsticker--tree-selection-overlay nil
161 "Highlight the selected list item.")
162 (defvar newsticker--frame nil
"Special frame for newsticker windows.")
163 (defvar newsticker--treeview-list-sort-order
'sort-by-time
)
164 (defvar newsticker--treeview-current-node-id nil
)
165 (defvar newsticker--treeview-current-tree nil
)
166 (defvar newsticker--treeview-feed-tree nil
)
167 (defvar newsticker--treeview-vfeed-tree nil
)
169 ;; maps for the clickable portions
170 (defvar newsticker--treeview-url-keymap
171 (let ((map (make-sparse-keymap 'newsticker--treeview-url-keymap
)))
172 (define-key map
[mouse-1
] 'newsticker-treeview-mouse-browse-url
)
173 (define-key map
[mouse-2
] 'newsticker-treeview-mouse-browse-url
)
174 (define-key map
"\n" 'newsticker-treeview-browse-url
)
175 (define-key map
"\C-m" 'newsticker-treeview-browse-url
)
176 (define-key map
[(control return
)] 'newsticker-handle-url
)
178 "Key map for click-able headings in the newsticker treeview buffers.")
181 ;; ======================================================================
183 ;; ======================================================================
184 (defsubst newsticker--treeview-tree-buffer
()
185 "Return the tree buffer of the newsticker treeview."
186 (nth 0 newsticker--treeview-buffers
))
187 (defsubst newsticker--treeview-list-buffer
()
188 "Return the list buffer of the newsticker treeview."
189 (nth 1 newsticker--treeview-buffers
))
190 (defsubst newsticker--treeview-item-buffer
()
191 "Return the item buffer of the newsticker treeview."
192 (nth 2 newsticker--treeview-buffers
))
193 (defsubst newsticker--treeview-tree-window
()
194 "Return the tree window of the newsticker treeview."
195 (nth 0 newsticker--treeview-windows
))
196 (defsubst newsticker--treeview-list-window
()
197 "Return the list window of the newsticker treeview."
198 (nth 1 newsticker--treeview-windows
))
199 (defsubst newsticker--treeview-item-window
()
200 "Return the item window of the newsticker treeview."
201 (nth 2 newsticker--treeview-windows
))
203 ;; ======================================================================
204 ;;; utility functions
205 ;; ======================================================================
206 (defun newsticker--treeview-get-id (parent i
)
207 "Create an id for a newsticker treeview node.
208 PARENT is the node's parent, I is an integer."
209 ;;(message "newsticker--treeview-get-id %s"
210 ;; (format "%s-%d" (widget-get parent :nt-id) i))
211 (format "%s-%d" (widget-get parent
:nt-id
) i
))
213 (defun newsticker--treeview-ids-eq (id1 id2
)
214 "Return non-nil if ids ID1 and ID2 are equal."
215 ;;(message "%s/%s" (or id1 -1) (or id2 -1))
216 (and id1 id2
(string= id1 id2
)))
218 (defun newsticker--treeview-nodes-eq (node1 node2
)
219 "Compare treeview nodes NODE1 and NODE2 for equality.
220 Nodes are equal if the have the same newsticker-id. Note that
221 during re-tagging and collapsing/expanding nodes change, while
222 their id stays constant."
223 (let ((id1 (widget-get node1
:nt-id
))
224 (id2 (widget-get node2
:nt-id
)))
225 ;;(message "%s/%s %s/%s" (widget-get node1 :tag) (widget-get node2 :tag)
226 ;; (or id1 -1) (or id2 -1))
227 (or (newsticker--treeview-ids-eq id1 id2
)
228 (string= (widget-get node1
:tag
) (widget-get node2
:tag
)))))
230 (defun newsticker--treeview-do-get-node-of-feed (feed-name startnode
)
231 "Recursivly search node for feed FEED-NAME starting from STARTNODE."
232 ;;(message "%s/%s" feed-name (widget-get startnode :nt-feed))
233 (if (string= feed-name
(or (widget-get startnode
:nt-feed
)
234 (widget-get startnode
:nt-vfeed
)))
235 (throw 'found startnode
)
236 (let ((children (widget-get startnode
:children
)))
238 (newsticker--treeview-do-get-node-of-feed feed-name w
)))))
240 (defun newsticker--treeview-get-node-of-feed (feed-name)
241 "Return node for feed FEED-NAME in newsticker treeview tree."
243 (newsticker--treeview-do-get-node-of-feed feed-name
244 newsticker--treeview-feed-tree
)
245 (newsticker--treeview-do-get-node-of-feed feed-name
246 newsticker--treeview-vfeed-tree
)))
248 (defun newsticker--treeview-do-get-node (id startnode
)
249 "Recursivly search node with ID starting from STARTNODE."
250 (if (newsticker--treeview-ids-eq id
(widget-get startnode
:nt-id
))
251 (throw 'found startnode
)
252 (let ((children (widget-get startnode
:children
)))
254 (newsticker--treeview-do-get-node id w
)))))
256 (defun newsticker--treeview-get-node (id)
257 "Return node with ID in newsticker treeview tree."
259 (newsticker--treeview-do-get-node id newsticker--treeview-feed-tree
)
260 (newsticker--treeview-do-get-node id newsticker--treeview-vfeed-tree
)))
262 (defun newsticker--treeview-get-current-node ()
263 "Return current node in newsticker treeview tree."
264 (newsticker--treeview-get-node newsticker--treeview-current-node-id
))
266 ;; ======================================================================
268 (unless (fboundp 'declare-function
) (defmacro declare-function
(&rest r
)))
269 (declare-function w3m-toggle-inline-images
"ext:w3m" (&optional force no-cache
))
271 (defun newsticker--treeview-render-text (start end
)
272 "Render text between markers START and END."
273 (if newsticker-html-renderer
274 (condition-case error-data
276 (set-marker-insertion-type end t
)
277 ;; check whether it is necessary to call html renderer
278 ;; (regexp inspired by htmlr.el)
280 (when (re-search-forward
281 "</?[A-Za-z1-6]*\\|&#?[A-Za-z0-9]+;" end t
)
282 ;; (message "%s" (newsticker--title item))
283 (let ((w3m-fill-column (if newsticker-use-full-width
285 (w3-maximum-line-length
286 (if newsticker-use-full-width nil fill-column
)))
288 (funcall newsticker-html-renderer start end
)))
289 ;;(cond ((eq newsticker-html-renderer 'w3m-region)
290 ;; (add-text-properties start end (list 'keymap
291 ;; w3m-minor-mode-map)))
292 ;;((eq newsticker-html-renderer 'w3-region)
293 ;;(add-text-properties start end (list 'keymap w3-mode-map))))
294 (if (eq newsticker-html-renderer
'w3m-region
)
295 (w3m-toggle-inline-images t
))
298 (message "Error: HTML rendering failed: %s, %s"
299 (car error-data
) (cdr error-data
))
303 ;; ======================================================================
305 ;; ======================================================================
306 (defun newsticker--treeview-list-add-item (item feed
&optional show-feed
)
307 "Add news ITEM for FEED to newsticker treeview list window.
308 If string SHOW-FEED is non-nil it is shown in the item string."
309 (setq newsticker--treeview-list-show-feed show-feed
)
311 (set-buffer (newsticker--treeview-list-buffer))
312 (let* ((inhibit-read-only t
)
314 (goto-char (point-max))
315 (setq pos1
(point-marker))
317 (insert (propertize " " 'display
'(space :align-to
2)))
318 (insert (if show-feed
321 (format "%-10s" (newsticker--real-feed-name
324 (propertize " " 'display
'(space :align-to
12)))
326 (insert (format-time-string "%d.%m.%y, %H:%M"
327 (newsticker--time item
)))
328 (insert (propertize " " 'display
329 (list 'space
:align-to
(if show-feed
28 18))))
330 (setq pos2
(point-marker))
331 (insert (newsticker--title item
))
333 (newsticker--treeview-render-text pos2
(point-marker))
335 (while (search-forward "\n" nil t
)
337 (let ((map (make-sparse-keymap)))
338 (define-key map
[mouse-1
] 'newsticker-treeview-tree-click
)
339 (define-key map
"\n" 'newsticker-treeview-show-item
)
340 (define-key map
"\C-m" 'newsticker-treeview-show-item
)
341 (add-text-properties pos1
(point-max)
344 :nt-link
(newsticker--link item
)
345 'mouse-face
'highlight
347 'help-echo
(buffer-substring pos2
351 (defun newsticker--treeview-list-clear ()
352 "Clear the newsticker treeview list window."
354 (set-buffer (newsticker--treeview-list-buffer))
355 (let ((inhibit-read-only t
))
357 (kill-all-local-variables)
360 (defun newsticker--treeview-list-items-with-age-callback (widget
363 "Fill newsticker treeview list window with items of certain age.
364 This is a callback function for the treeview nodes.
365 Argument WIDGET is the calling treeview widget.
366 Argument CHANGED-WIDGET is the widget that actually has changed.
367 Optional argument AGES is the list of ages that are to be shown."
368 (newsticker--treeview-list-clear)
369 (widget-put widget
:nt-selected t
)
370 (apply 'newsticker--treeview-list-items-with-age ages
))
372 (defun newsticker--treeview-list-items-with-age (&rest ages
)
373 "Actually fill newsticker treeview list window with items of certain age.
374 AGES is the list of ages that are to be shown."
376 (let ((feed-name-symbol (intern (car feed
))))
378 (when (memq (newsticker--age item
) ages
)
379 (newsticker--treeview-list-add-item
380 item feed-name-symbol t
)))
381 (newsticker--treeview-list-sort-items
382 (cdr (newsticker--cache-get-feed feed-name-symbol
))))))
383 (append newsticker-url-list-defaults newsticker-url-list
))
384 (newsticker--treeview-list-update nil
))
386 (defun newsticker--treeview-list-new-items (widget changed-widget
388 "Fill newsticker treeview list window with new items.
389 This is a callback function for the treeview nodes.
390 Argument WIDGET is the calling treeview widget.
391 Argument CHANGED-WIDGET is the widget that actually has changed.
392 Optional argument EVENT is the mouse event that triggered this action."
393 (newsticker--treeview-list-items-with-age-callback widget changed-widget
395 (newsticker--treeview-item-show-text
397 "This is a virtual feed containing all new items"))
399 (defun newsticker--treeview-list-immortal-items (widget changed-widget
401 "Fill newsticker treeview list window with immortal items.
402 This is a callback function for the treeview nodes.
403 Argument WIDGET is the calling treeview widget.
404 Argument CHANGED-WIDGET is the widget that actually has changed.
405 Optional argument EVENT is the mouse event that triggered this action."
406 (newsticker--treeview-list-items-with-age-callback widget changed-widget
408 (newsticker--treeview-item-show-text
410 "This is a virtual feed containing all immortal items."))
412 (defun newsticker--treeview-list-obsolete-items (widget changed-widget
414 "Fill newsticker treeview list window with obsolete items.
415 This is a callback function for the treeview nodes.
416 Argument WIDGET is the calling treeview widget.
417 Argument CHANGED-WIDGET is the widget that actually has changed.
418 Optional argument EVENT is the mouse event that triggered this action."
419 (newsticker--treeview-list-items-with-age-callback widget changed-widget
421 (newsticker--treeview-item-show-text
423 "This is a virtual feed containing all obsolete items."))
425 (defun newsticker--treeview-list-all-items (widget changed-widget
427 "Fill newsticker treeview list window with all items.
428 This is a callback function for the treeview nodes.
429 Argument WIDGET is the calling treeview widget.
430 Argument CHANGED-WIDGET is the widget that actually has changed.
431 Optional argument EVENT is the mouse event that triggered this action."
432 (newsticker--treeview-list-items-with-age-callback widget changed-widget
435 (newsticker--treeview-item-show-text
437 "This is a virtual feed containing all items."))
439 (defun newsticker--treeview-list-items-v (vfeed-name)
440 "List items for virtual feed VFEED-NAME."
442 (cond ((string-match "\\*new\\*" vfeed-name
)
443 (newsticker--treeview-list-items-with-age 'new
))
444 ((string-match "\\*immortal\\*" vfeed-name
)
445 (newsticker--treeview-list-items-with-age 'immortal
))
446 ((string-match "\\*old\\*" vfeed-name
)
447 (newsticker--treeview-list-items-with-age 'old nil
)))
448 (newsticker--treeview-list-update nil
)
451 (defun newsticker--treeview-list-items (feed-name)
452 "List items for feed FEED-NAME."
454 (if (newsticker--treeview-virtual-feed-p feed-name
)
455 (newsticker--treeview-list-items-v feed-name
)
457 (if (eq (newsticker--age item
) 'feed
)
458 (newsticker--treeview-item-show item
(intern feed-name
))
459 (newsticker--treeview-list-add-item item
460 (intern feed-name
))))
461 (newsticker--treeview-list-sort-items
462 (cdr (newsticker--cache-get-feed (intern feed-name
)))))
463 (newsticker--treeview-list-update nil
))))
465 (defun newsticker--treeview-list-feed-items (widget changed-widget
467 "Callback function for listing feed items.
468 Argument WIDGET is the calling treeview widget.
469 Argument CHANGED-WIDGET is the widget that actually has changed.
470 Optional argument EVENT is the mouse event that triggered this action."
471 (newsticker--treeview-list-clear)
472 (widget-put widget
:nt-selected t
)
473 (let ((feed-name (widget-get widget
:nt-feed
))
474 (vfeed-name (widget-get widget
:nt-vfeed
)))
476 (newsticker--treeview-list-items feed-name
)
477 (newsticker--treeview-list-items-v vfeed-name
))))
479 (defun newsticker--treeview-list-compare-item-by-age (item1 item2
)
480 "Compare two news items ITEM1 and ITEM2 wrt age."
482 (let ((age1 (newsticker--age item1
))
483 (age2 (newsticker--age item2
)))
484 (cond ((eq age1
'new
)
487 (cond ((eq age2
'new
)
494 (cond ((eq age2
'new
)
505 (defun newsticker--treeview-list-compare-item-by-age-reverse (item1 item2
)
506 "Compare two news items ITEM1 and ITEM2 wrt age in reverse order."
507 (newsticker--treeview-list-compare-item-by-age item2 item1
))
509 (defun newsticker--treeview-list-compare-item-by-time (item1 item2
)
510 "Compare two news items ITEM1 and ITEM2 wrt time values."
511 (newsticker--cache-item-compare-by-time item1 item2
))
513 (defun newsticker--treeview-list-compare-item-by-time-reverse (item1 item2
)
514 "Compare two news items ITEM1 and ITEM2 wrt time values in reverse order."
515 (newsticker--cache-item-compare-by-time item2 item1
))
517 (defun newsticker--treeview-list-compare-item-by-title (item1 item2
)
518 "Compare two news items ITEM1 and ITEM2 wrt title."
519 (newsticker--cache-item-compare-by-title item1 item2
))
521 (defun newsticker--treeview-list-compare-item-by-title-reverse (item1 item2
)
522 "Compare two news items ITEM1 and ITEM2 wrt title in reverse order."
523 (newsticker--cache-item-compare-by-title item2 item1
))
525 (defun newsticker--treeview-list-sort-items (items)
526 "Return sorted copy of list ITEMS.
527 The sort function is chosen according to the value of
528 `newsticker--treeview-list-sort-order'."
530 (cond ((eq newsticker--treeview-list-sort-order
'sort-by-age
)
531 'newsticker--treeview-list-compare-item-by-age
)
532 ((eq newsticker--treeview-list-sort-order
533 'sort-by-age-reverse
)
534 'newsticker--treeview-list-compare-item-by-age-reverse
)
535 ((eq newsticker--treeview-list-sort-order
'sort-by-time
)
536 'newsticker--treeview-list-compare-item-by-time
)
537 ((eq newsticker--treeview-list-sort-order
538 'sort-by-time-reverse
)
539 'newsticker--treeview-list-compare-item-by-time-reverse
)
540 ((eq newsticker--treeview-list-sort-order
'sort-by-title
)
541 'newsticker--treeview-list-compare-item-by-title
)
542 ((eq newsticker--treeview-list-sort-order
543 'sort-by-title-reverse
)
544 'newsticker--treeview-list-compare-item-by-title-reverse
)
546 'newsticker--treeview-list-compare-item-by-title
))))
547 (sort (copy-sequence items
) sort-fun
)))
549 (defun newsticker--treeview-list-update-faces ()
550 "Update faces in the treeview list buffer."
553 (set-buffer (newsticker--treeview-list-buffer))
554 (let ((inhibit-read-only t
))
555 (goto-char (point-min))
557 (let* ((pos (save-excursion (end-of-line) (point)))
558 (item (get-text-property (point) :nt-item
))
559 (age (newsticker--age item
))
560 (selected (get-text-property (point) :nt-selected
))
561 (face (cond ((eq age
'new
)
562 'newsticker-treeview-new-face
)
564 'newsticker-treeview-old-face
)
566 'newsticker-treeview-immortal-face
)
568 'newsticker-treeview-obsolete-face
)
571 (put-text-property (point) pos
'face face
)
573 (move-overlay newsticker--selection-overlay
(point)
574 (1+ pos
) ;include newline
576 (if selected
(setq pos-sel
(point)))
578 (beginning-of-line))))) ;; FIXME!?
580 (if (window-live-p (newsticker--treeview-list-window))
581 (set-window-point (newsticker--treeview-list-window) pos-sel
)))))
583 (defun newsticker--treeview-list-clear-highlight ()
584 "Clear the highlight in the treeview list buffer."
586 (set-buffer (newsticker--treeview-list-buffer))
587 (let ((inhibit-read-only t
))
588 (put-text-property (point-min) (point-max) :nt-selected nil
))
589 (newsticker--treeview-list-update-faces)))
591 (defun newsticker--treeview-list-update-highlight ()
592 "Update the highlight in the treeview list buffer."
593 (newsticker--treeview-list-clear-highlight)
596 (set-buffer (newsticker--treeview-list-buffer))
597 (let ((inhibit-read-only t
))
598 (put-text-property (save-excursion (beginning-of-line) (point))
599 (save-excursion (end-of-line) (point))
601 (newsticker--treeview-list-update-faces))))
603 (defun newsticker--treeview-list-highlight-start ()
604 "Return position of selection in treeview list buffer."
606 (set-buffer (newsticker--treeview-list-buffer))
607 (goto-char (point-min))
608 (next-single-property-change (point) :nt-selected
)))
610 (defun newsticker--treeview-list-update (clear-buffer)
611 "Update the faces and highlight in the treeview list buffer.
612 If CLEAR-BUFFER is non-nil the list buffer is completely erased."
614 (if (window-live-p (newsticker--treeview-list-window))
615 (set-window-buffer (newsticker--treeview-list-window)
616 (newsticker--treeview-list-buffer)))
617 (set-buffer (newsticker--treeview-list-buffer))
619 (let ((inhibit-read-only t
))
621 (newsticker-treeview-list-mode)
622 (newsticker--treeview-list-update-faces)
623 (goto-char (point-min))))
625 (defvar newsticker-treeview-list-sort-button-map
626 (let ((map (make-sparse-keymap)))
627 (define-key map
[header-line mouse-1
]
628 'newsticker--treeview-list-sort-by-column
)
629 (define-key map
[header-line mouse-2
]
630 'newsticker--treeview-list-sort-by-column
)
632 "Local keymap for newsticker treeview list window sort buttons.")
634 (defun newsticker--treeview-list-sort-by-column (&optional event
)
635 "Sort the newsticker list window buffer by the column clicked on.
636 Optional argument EVENT is the mouse event that triggered this action."
637 (interactive (list last-input-event
))
638 (if event
(mouse-select-window event
))
639 (let* ((pos (event-start event
))
640 (obj (posn-object pos
))
642 (get-text-property (cdr obj
) 'sort-order
(car obj
))
643 (get-text-property (posn-point pos
) 'sort-order
))))
644 (setq newsticker--treeview-list-sort-order
645 (cond ((eq sort-order
'sort-by-age
)
646 (if (eq newsticker--treeview-list-sort-order
'sort-by-age
)
649 ((eq sort-order
'sort-by-time
)
650 (if (eq newsticker--treeview-list-sort-order
'sort-by-time
)
651 'sort-by-time-reverse
653 ((eq sort-order
'sort-by-title
)
654 (if (eq newsticker--treeview-list-sort-order
'sort-by-title
)
655 'sort-by-title-reverse
657 (newsticker-treeview-update)))
659 (defun newsticker-treeview-list-make-sort-button (name sort-order
)
660 "Create propertized string for headerline button.
661 NAME is the button text, SORT-ORDER is the associated sort order
663 (let ((face (if (string-match (symbol-name sort-order
)
665 newsticker--treeview-list-sort-order
))
669 'sort-order sort-order
670 'help-echo
(concat "Sort by " name
)
671 'mouse-face
'highlight
673 'keymap newsticker-treeview-list-sort-button-map
)))
675 ;; ======================================================================
677 ;; ======================================================================
678 (defun newsticker--treeview-item-show-text (title description
)
679 "Show text in treeview item buffer consisting of TITLE and DESCRIPTION."
681 (set-buffer (newsticker--treeview-item-buffer))
682 (when (fboundp 'w3m-process-stop
)
683 (w3m-process-stop (current-buffer)))
684 (let ((inhibit-read-only t
))
686 (kill-all-local-variables)
689 (put-text-property (point-min) (point) 'face
'newsticker-feed-face
)
690 (insert "\n\n" description
)
691 (when newsticker-justification
692 (fill-region (point-min) (point-max) newsticker-justification
))
693 (newsticker-treeview-mode)
694 (goto-char (point-min)))))
696 (defun newsticker--treeview-item-show (item feed-name-symbol
)
697 "Show news ITEM coming from FEED-NAME-SYMBOL in treeview item buffer."
698 (setq newsticker--treeview-current-feed
(symbol-name feed-name-symbol
))
700 (set-buffer (newsticker--treeview-item-buffer))
701 (when (fboundp 'w3m-process-stop
)
702 (w3m-process-stop (current-buffer)))
703 (let ((inhibit-read-only t
)
704 (is-rendered-HTML nil
)
706 (marker1 (make-marker))
707 (marker2 (make-marker)))
709 (kill-all-local-variables)
712 (when (and item feed-name-symbol
)
713 (let ((wwidth (1- (window-width (newsticker--treeview-item-window)))))
714 (if newsticker-use-full-width
715 (set (make-local-variable 'fill-column
) wwidth
))
716 (set (make-local-variable 'fill-column
) (min fill-column
718 (let ((desc (newsticker--desc item
)))
719 (insert "\n" (or desc
"[No Description]")))
720 (set-marker marker1
(1+ (point-min)))
721 (set-marker marker2
(point-max))
722 (setq is-rendered-HTML
(newsticker--treeview-render-text marker1
724 (when (and newsticker-justification
725 (not is-rendered-HTML
))
726 (fill-region marker1 marker2 newsticker-justification
))
728 (newsticker-treeview-mode)
729 (goto-char (point-min))
730 ;; insert logo at top
731 (let* ((newsticker-enable-logo-manipulations nil
)
732 (img (newsticker--image-read feed-name-symbol nil
)))
733 (if (and (display-images-p) img
)
734 (newsticker--insert-image img
(car item
))
735 (insert (newsticker--real-feed-name feed-name-symbol
))))
736 (add-text-properties (point-min) (point)
737 (list 'face
'newsticker-feed-face
738 'mouse-face
'highlight
739 'help-echo
"Visit in web browser."
740 :nt-link
(newsticker--link item
)
741 'keymap newsticker--treeview-url-keymap
))
747 (insert (newsticker--title item
) "\n")
748 (set-marker marker1 pos
)
749 (set-marker marker2
(point))
750 (newsticker--treeview-render-text marker1 marker2
)
751 (put-text-property pos
(point) 'face
'newsticker-treeview-new-face
)
755 (put-text-property marker2
(point) 'face
'newsticker-treeview-face
)
756 (set-marker marker2
(point))
757 (when newsticker-justification
758 (fill-region marker1 marker2 newsticker-justification
))
760 (add-text-properties marker1
(1- (point))
761 (list 'mouse-face
'highlight
762 'help-echo
"Visit in web browser."
763 :nt-link
(newsticker--link item
)
764 'keymap newsticker--treeview-url-keymap
))
765 (insert (format-time-string newsticker-date-format
766 (newsticker--time item
)))
770 ;; insert enclosures and rest at bottom
771 (goto-char (point-max))
774 (newsticker--insert-enclosure item newsticker--treeview-url-keymap
)
775 (put-text-property pos
(point) 'face
'newsticker-enclosure-face
)
778 (newsticker--print-extra-elements item newsticker--treeview-url-keymap
)
779 (put-text-property pos
(point) 'face
'newsticker-extra-face
)
780 (goto-char (point-min)))))
781 (if (and newsticker-treeview-automatically-mark-displayed-items-as-old
783 (memq (newsticker--age item
) '(new obsolete
)))
784 (let ((newsticker-treeview-automatically-mark-displayed-items-as-old nil
))
785 (newsticker-treeview-mark-item-old t
)
786 (newsticker--treeview-list-update-faces)))
787 (if (window-live-p (newsticker--treeview-item-window))
788 (set-window-point (newsticker--treeview-item-window) 1)))
790 (defun newsticker--treeview-item-update ()
791 "Update the treeview item buffer and window."
793 (if (window-live-p (newsticker--treeview-item-window))
794 (set-window-buffer (newsticker--treeview-item-window)
795 (newsticker--treeview-item-buffer)))
796 (set-buffer (newsticker--treeview-item-buffer))
797 (let ((inhibit-read-only t
))
799 (newsticker-treeview-mode)))
801 ;; ======================================================================
803 ;; ======================================================================
804 (defun newsticker--treeview-tree-expand (tree)
806 Callback function for tree widget that adds nodes for feeds and subgroups."
807 (tree-widget-set-theme "folder")
808 (let ((group (widget-get tree
:nt-group
))
812 (setq nt-id
(newsticker--treeview-get-id tree i
))
815 (let* ((g-name (car g
)))
817 :tag
,(newsticker--treeview-tree-get-tag g-name nil nt-id
)
818 :expander newsticker--treeview-tree-expand
819 :expander-p
(lambda (&rest ignore
) t
)
823 :keep
(:nt-feed
:num-new
:nt-id
:open
);; :nt-group
825 (let ((tag (newsticker--treeview-tree-get-tag g nil nt-id
)))
827 :leaf-icon newsticker--tree-widget-leaf-icon
829 :action newsticker--treeview-list-feed-items
835 (defun newsticker--treeview-tree-expand-status (tree &optional changed-widget
837 "Expand the vfeed TREE.
838 Optional arguments CHANGED-WIDGET and EVENT are ignored."
839 (tree-widget-set-theme "folder")
840 (list `(item :tag
,(newsticker--treeview-tree-get-tag nil
"new")
842 :action newsticker--treeview-list-new-items
843 :nt-id
,(newsticker--treeview-get-id tree
0)
845 `(item :tag
,(newsticker--treeview-tree-get-tag nil
"immortal")
847 :action newsticker--treeview-list-immortal-items
848 :nt-id
,(newsticker--treeview-get-id tree
1)
850 `(item :tag
,(newsticker--treeview-tree-get-tag nil
"obsolete")
852 :action newsticker--treeview-list-obsolete-items
853 :nt-id
,(newsticker--treeview-get-id tree
2)
855 `(item :tag
,(newsticker--treeview-tree-get-tag nil
"all")
857 :action newsticker--treeview-list-all-items
858 :nt-id
,(newsticker--treeview-get-id tree
3)
861 (defun newsticker--treeview-virtual-feed-p (feed-name)
862 "Return non-nil if FEED-NAME is a virtual feed."
863 (string-match "\\*.*\\*" feed-name
))
865 (define-widget 'newsticker--tree-widget-leaf-icon
'tree-widget-icon
866 "Icon for a tree-widget leaf node."
869 :button-face
'default
)
871 (defun newsticker--treeview-tree-update ()
872 "Update treeview tree buffer and window."
874 (if (window-live-p (newsticker--treeview-tree-window))
875 (set-window-buffer (newsticker--treeview-tree-window)
876 (newsticker--treeview-tree-buffer)))
877 (set-buffer (newsticker--treeview-tree-buffer))
878 (kill-all-local-variables)
879 (let ((inhibit-read-only t
))
881 (tree-widget-set-theme "folder")
882 (setq newsticker--treeview-feed-tree
883 (widget-create 'tree-widget
884 :tag
(newsticker--treeview-propertize-tag
886 :expander
'newsticker--treeview-tree-expand
887 :expander-p
(lambda (&rest ignore
) t
)
888 :leaf-icon
'newsticker--tree-widget-leaf-icon
889 :nt-group
(cdr newsticker-groups
)
893 (setq newsticker--treeview-vfeed-tree
894 (widget-create 'tree-widget
895 :tag
(newsticker--treeview-propertize-tag
896 "Virtual Feeds" 0 "vfeeds")
897 :expander
'newsticker--treeview-tree-expand-status
898 :expander-p
(lambda (&rest ignore
) t
)
899 :leaf-icon
'newsticker--tree-widget-leaf-icon
903 (use-local-map widget-keymap
)
905 (newsticker-treeview-mode)))
907 (defun newsticker--treeview-propertize-tag (tag &optional num-new nt-id feed
909 "Return propertized copy of string TAG.
910 Optional argument NUM-NEW is used for choosing face, other
911 arguments NT-ID, FEED, and VFEED are added as properties."
912 ;;(message "newsticker--treeview-propertize-tag '%s' %s" feed nt-id)
913 (let ((face 'newsticker-treeview-face
)
914 (map (make-sparse-keymap)))
915 (if (and num-new
(> num-new
0))
916 (setq face
'newsticker-treeview-new-face
))
917 (define-key map
[mouse-1
] 'newsticker-treeview-tree-click
)
918 (define-key map
"\n" 'newsticker-treeview-tree-do-click
)
919 (define-key map
"\C-m" 'newsticker-treeview-tree-do-click
)
920 (propertize tag
'face face
'keymap map
925 'mouse-face
'highlight
)))
927 (defun newsticker--treeview-tree-get-tag (feed-name vfeed-name
929 "Return a tag string for either FEED-NAME or, if it is nil, for VFEED-NAME.
930 Optional argument NT-ID is added to the tag's properties."
931 (let (tag (num-new 0))
933 (cond ((string= vfeed-name
"new")
934 (setq num-new
(newsticker--stat-num-items-total 'new
))
935 (setq tag
(format "New items (%d)" num-new
)))
936 ((string= vfeed-name
"immortal")
937 (setq num-new
(newsticker--stat-num-items-total 'immortal
))
938 (setq tag
(format "Immortal items (%d)" num-new
)))
939 ((string= vfeed-name
"obsolete")
940 (setq num-new
(newsticker--stat-num-items-total 'obsolete
))
941 (setq tag
(format "Obsolete items (%d)" num-new
)))
942 ((string= vfeed-name
"all")
943 (setq num-new
(newsticker--stat-num-items-total))
944 (setq tag
(format "All items (%d)" num-new
)))))
946 (setq num-new
(newsticker--stat-num-items-for-group
947 (intern feed-name
) 'new
'immortal
))
950 (newsticker--real-feed-name (intern feed-name
))
953 (newsticker--treeview-propertize-tag tag num-new
955 feed-name vfeed-name
))))
957 (defun newsticker--stat-num-items-for-group (feed-name-symbol &rest ages
)
958 "Count number of items in feed FEED-NAME-SYMBOL that have an age matching AGES."
959 ;;(message "newsticker--stat-num-items-for-group %s %s" feed-name-symbol ages)
960 (let ((result (apply 'newsticker--stat-num-items feed-name-symbol ages
)))
962 (setq result
(+ result
963 (apply 'newsticker--stat-num-items
(intern f-n
)
965 (newsticker--group-get-feeds
966 (newsticker--group-get-group (symbol-name feed-name-symbol
)) t
))
969 (defun newsticker--treeview-count-node-items (feed &optional isvirtual
)
970 "Count number of relevant items for a treeview node.
971 FEED gives the name of the feed or group. If ISVIRTUAL is non-nil
972 the feed is a virtual feed."
976 (cond ((string= feed
"new")
977 (setq num-new
(newsticker--stat-num-items-total 'new
)))
978 ((string= feed
"immortal")
979 (setq num-new
(newsticker--stat-num-items-total 'immortal
)))
980 ((string= feed
"obsolete")
981 (setq num-new
(newsticker--stat-num-items-total 'obsolete
)))
982 ((string= feed
"all")
983 (setq num-new
(newsticker--stat-num-items-total))))
984 (setq num-new
(newsticker--stat-num-items-for-group
985 (intern feed
) 'new
'immortal
))))
988 (defun newsticker--treeview-tree-update-tag (w &optional recursive
990 "Update tag for tree widget W.
991 If RECURSIVE is non-nil recursively update parent widgets as
992 well. Argument IGNORE is ignored. Note that this function, if
993 called recursively, makes w invalid. You should keep w's nt-id in
995 (let* ((parent (widget-get w
:parent
))
996 (feed (or (widget-get w
:nt-feed
) (widget-get parent
:nt-feed
)))
997 (vfeed (or (widget-get w
:nt-vfeed
) (widget-get parent
:nt-vfeed
)))
998 (nt-id (or (widget-get w
:nt-id
) (widget-get parent
:nt-id
)))
999 (num-new (newsticker--treeview-count-node-items (or feed vfeed
)
1001 (tag (newsticker--treeview-tree-get-tag feed vfeed nt-id
))
1002 (n (widget-get w
:node
)))
1005 (newsticker--treeview-tree-update-tag parent
)))
1008 (widget-put n
:tag tag
))
1009 (widget-put w
:num-new num-new
)
1010 (widget-put w
:tag tag
)
1011 (when (marker-position (widget-get w
:from
))
1013 (notify (widget-get w
:notify
)))
1014 ;; FIXME: This moves point!!!!
1016 (set-buffer (newsticker--treeview-tree-buffer))
1017 (widget-value-set w
(widget-value w
)))
1020 (defun newsticker--treeview-tree-do-update-tags (widget)
1021 "Actually recursively update tags for WIDGET."
1023 (let ((children (widget-get widget
:children
)))
1024 (dolist (w children
)
1025 (newsticker--treeview-tree-do-update-tags w
))
1026 (newsticker--treeview-tree-update-tag widget
))))
1028 (defun newsticker--treeview-tree-update-tags (&rest ignore
)
1029 "Update all tags of all trees.
1030 Arguments IGNORE are ignored."
1031 (save-current-buffer
1032 (set-buffer (newsticker--treeview-tree-buffer))
1033 (let ((inhibit-read-only t
))
1034 (newsticker--treeview-tree-do-update-tags
1035 newsticker--treeview-feed-tree
)
1036 (newsticker--treeview-tree-do-update-tags
1037 newsticker--treeview-vfeed-tree
))
1038 (tree-widget-set-theme "folder")))
1040 (defun newsticker--treeview-tree-update-highlight ()
1041 "Update highlight in tree buffer."
1042 (let ((pos (widget-get (newsticker--treeview-get-current-node) :from
)))
1043 (unless (or (integerp pos
) (and (markerp pos
) (marker-position pos
)))
1044 (setq pos
(widget-get (widget-get
1045 (newsticker--treeview-get-current-node)
1047 (when (or (integerp pos
) (and (markerp pos
) (marker-position pos
)))
1049 (set-buffer (newsticker--treeview-tree-buffer))
1051 (move-overlay newsticker--tree-selection-overlay
1052 (save-excursion (beginning-of-line) (point))
1053 (save-excursion (end-of-line) (1+ (point)))
1055 (if (window-live-p (newsticker--treeview-tree-window))
1056 (set-window-point (newsticker--treeview-tree-window) pos
)))))
1058 ;; ======================================================================
1060 ;; ======================================================================
1061 ;;(makunbound 'newsticker-treeview-tool-bar-map)
1062 (defvar newsticker-treeview-tool-bar-map
1063 (if (featurep 'xemacs
)
1065 (if (boundp 'tool-bar-map
)
1066 (let ((tool-bar-map (make-sparse-keymap)))
1067 (define-key tool-bar-map
[newsticker-sep-1
]
1068 (list 'menu-item
"--double-line"))
1069 (define-key tool-bar-map
[newsticker-browse-url
]
1070 (list 'menu-item
"newsticker-browse-url"
1071 'newsticker-browse-url
1073 :help
"Browse URL for item at point"
1074 :image newsticker--browse-image
))
1075 (define-key tool-bar-map
[newsticker-buffer-force-update
]
1076 (list 'menu-item
"newsticker-treeview-update"
1077 'newsticker-treeview-update
1079 :help
"Update newsticker buffer"
1080 :image newsticker--update-image
1082 (define-key tool-bar-map
[newsticker-get-all-news
]
1083 (list 'menu-item
"newsticker-get-all-news" 'newsticker-get-all-news
1085 :help
"Get news for all feeds"
1086 :image newsticker--get-all-image
))
1087 (define-key tool-bar-map
[newsticker-mark-item-at-point-as-read
]
1088 (list 'menu-item
"newsticker-treeview-mark-item-old"
1089 'newsticker-treeview-mark-item-old
1091 :image newsticker--mark-read-image
1092 :help
"Mark current item as read"
1093 ;;:enable '(newsticker-item-not-old-p) FIXME
1095 (define-key tool-bar-map
[newsticker-mark-item-at-point-as-immortal
]
1096 (list 'menu-item
"newsticker-treeview-toggle-item-immortal"
1097 'newsticker-treeview-toggle-item-immortal
1099 :image newsticker--mark-immortal-image
1100 :help
"Toggle current item as immortal"
1102 ;;'(newsticker-item-not-immortal-p) FIXME
1104 (define-key tool-bar-map
[newsticker-next-feed
]
1105 (list 'menu-item
"newsticker-treeview-next-feed"
1106 'newsticker-treeview-next-feed
1108 :help
"Go to next feed"
1109 :image newsticker--next-feed-image
1111 ;;'(newsticker-next-feed-available-p) FIXME
1113 (define-key tool-bar-map
[newsticker-treeview-next-item
]
1114 (list 'menu-item
"newsticker-treeview-next-item"
1115 'newsticker-treeview-next-item
1117 :help
"Go to next item"
1118 :image newsticker--next-item-image
1120 ;;'(newsticker-next-item-available-p) FIXME
1122 (define-key tool-bar-map
[newsticker-treeview-prev-item
]
1123 (list 'menu-item
"newsticker-treeview-prev-item"
1124 'newsticker-treeview-prev-item
1126 :help
"Go to previous item"
1127 :image newsticker--previous-item-image
1129 ;;'(newsticker-previous-item-available-p) FIXME
1131 (define-key tool-bar-map
[newsticker-treeview-prev-feed
]
1132 (list 'menu-item
"newsticker-treeview-prev-feed"
1133 'newsticker-treeview-prev-feed
1135 :help
"Go to previous feed"
1136 :image newsticker--previous-feed-image
1138 ;;'(newsticker-previous-feed-available-p) FIXME
1140 ;; standard icons / actions
1141 (tool-bar-add-item "close"
1142 'newsticker-treeview-quit
1143 'newsticker-treeview-quit
1144 :help
"Close newsticker")
1145 (tool-bar-add-item "preferences"
1146 'newsticker-customize
1147 'newsticker-customize
1148 :help
"Customize newsticker")
1151 ;; ======================================================================
1153 ;; ======================================================================
1155 (defun newsticker-treeview-mouse-browse-url (event)
1156 "Call `browse-url' for the link of the item at which the EVENT occurred."
1159 (switch-to-buffer (window-buffer (posn-window (event-end event
))))
1160 (let ((url (get-text-property (posn-point (event-end event
))
1164 (if newsticker-automatically-mark-visited-items-as-old
1165 (newsticker-treeview-mark-item-old))))))
1167 (defun newsticker-treeview-browse-url ()
1168 "Call `browse-url' for the link of the item at point."
1171 (set-buffer (newsticker--treeview-list-buffer))
1172 (let ((url (get-text-property (point) :nt-link
)))
1175 (if newsticker-automatically-mark-visited-items-as-old
1176 (newsticker-treeview-mark-item-old))))))
1178 (defun newsticker--treeview-buffer-init ()
1179 "Initialize all treeview buffers."
1180 (setq newsticker--treeview-buffers nil
)
1181 (add-to-list 'newsticker--treeview-buffers
1182 (get-buffer-create "*Newsticker Tree*") t
)
1183 (add-to-list 'newsticker--treeview-buffers
1184 (get-buffer-create "*Newsticker List*") t
)
1185 (add-to-list 'newsticker--treeview-buffers
1186 (get-buffer-create "*Newsticker Item*") t
)
1188 (unless newsticker--selection-overlay
1190 (set-buffer (newsticker--treeview-list-buffer))
1191 (setq newsticker--selection-overlay
(make-overlay (point-min)
1193 (overlay-put newsticker--selection-overlay
'face
1194 'newsticker-treeview-selection-face
)))
1195 (unless newsticker--tree-selection-overlay
1197 (set-buffer (newsticker--treeview-tree-buffer))
1198 (setq newsticker--tree-selection-overlay
(make-overlay (point-min)
1200 (overlay-put newsticker--tree-selection-overlay
'face
1201 'newsticker-treeview-selection-face
)))
1203 (newsticker--treeview-tree-update)
1204 (newsticker--treeview-list-update t
)
1205 (newsticker--treeview-item-update))
1207 (defun newsticker-treeview-update ()
1208 "Update all treeview buffers and windows.
1209 Note: does not update the layout."
1211 (newsticker--group-manage-orphan-feeds)
1212 (newsticker--treeview-list-update t
)
1213 (newsticker--treeview-item-update)
1214 (newsticker--treeview-tree-update-tags)
1215 (cond (newsticker--treeview-current-feed
1216 (newsticker--treeview-list-items newsticker--treeview-current-feed
))
1217 (newsticker--treeview-current-vfeed
1218 (newsticker--treeview-list-items-with-age
1219 (intern newsticker--treeview-current-vfeed
))))
1220 (newsticker--treeview-tree-update-highlight)
1221 (newsticker--treeview-list-update-highlight))
1223 (defun newsticker-treeview-quit ()
1224 "Quit newsticker treeview."
1226 (setq newsticker--sentinel-callback nil
)
1227 (bury-buffer "*Newsticker Tree*")
1228 (bury-buffer "*Newsticker List*")
1229 (bury-buffer "*Newsticker Item*")
1230 (set-window-configuration newsticker--saved-window-config
)
1231 (when newsticker--frame
1232 (if (frame-live-p newsticker--frame
)
1233 (delete-frame newsticker--frame
))
1234 (setq newsticker--frame nil
))
1235 (newsticker-treeview-save))
1237 (defun newsticker-treeview-save ()
1238 "Save newsticker data including treeview settings."
1241 (let ((coding-system-for-write 'utf-8
)
1242 (buf (find-file-noselect (concat newsticker-dir
"/groups"))))
1245 (setq buffer-undo-list t
)
1247 (insert ";; -*- coding: utf-8 -*-\n")
1248 (insert (prin1-to-string newsticker-groups
))
1252 (defun newsticker--treeview-load ()
1253 "Load treeview settings."
1254 (let* ((coding-system-for-read 'utf-8
)
1256 (or (and (file-exists-p newsticker-groups-filename
)
1258 (format "Old newsticker groups (%s) file exists. Read it? "
1259 newsticker-groups-filename
))
1260 newsticker-groups-filename
)
1261 (concat newsticker-dir
"/groups")))
1262 (buf (and (file-exists-p filename
)
1263 (find-file-noselect filename
))))
1264 (and (file-exists-p newsticker-groups-filename
)
1265 (y-or-n-p (format "Delete old newsticker groups file? "))
1266 (delete-file newsticker-groups-filename
))
1269 (goto-char (point-min))
1271 (setq newsticker-groups
(read buf
))
1273 (message "Error while reading newsticker groups file!")
1274 (setq newsticker-groups nil
)))
1275 (kill-buffer buf
))))
1278 (defun newsticker-treeview-scroll-item ()
1279 "Scroll current item."
1281 (save-selected-window
1282 (select-window (newsticker--treeview-item-window) t
)
1285 (defun newsticker-treeview-show-item ()
1286 "Show current item."
1288 (newsticker--treeview-restore-layout)
1289 (newsticker--treeview-list-update-highlight)
1291 (set-buffer (newsticker--treeview-list-buffer))
1293 (let ((item (get-text-property (point) :nt-item
))
1294 (feed (get-text-property (point) :nt-feed
)))
1295 (newsticker--treeview-item-show item feed
)))
1296 (newsticker--treeview-tree-update-tag
1297 (newsticker--treeview-get-current-node) t
)
1298 (newsticker--treeview-tree-update-highlight))
1300 (defun newsticker-treeview-next-item ()
1301 "Move to next item."
1303 (newsticker--treeview-restore-layout)
1304 (save-current-buffer
1305 (set-buffer (newsticker--treeview-list-buffer))
1306 (if (newsticker--treeview-list-highlight-start)
1310 (newsticker-treeview-show-item))
1312 (defun newsticker-treeview-prev-item ()
1313 "Move to previous item."
1315 (newsticker--treeview-restore-layout)
1316 (save-current-buffer
1317 (set-buffer (newsticker--treeview-list-buffer))
1319 (newsticker-treeview-show-item))
1321 (defun newsticker-treeview-next-new-or-immortal-item (&optional
1324 "Move to next new or immortal item.
1325 Will move to next feed until an item is found. Will not move if
1326 optional argument CURRENT-ITEM-COUNTS is t and current item is
1329 (newsticker--treeview-restore-layout)
1330 (newsticker--treeview-list-clear-highlight)
1331 (unless (catch 'found
1332 (let ((move (not current-item-counts
)))
1334 (save-current-buffer
1335 (set-buffer (newsticker--treeview-list-buffer))
1336 (when move
(forward-line 1)
1339 (throw 'found nil
))))
1340 (when (memq (newsticker--age
1341 (newsticker--treeview-get-selected-item))
1343 (newsticker-treeview-show-item)
1346 (let ((wrap-trees (not dont-wrap-trees
)))
1347 (when (or (newsticker-treeview-next-feed t
)
1348 (and wrap-trees
(newsticker--treeview-first-feed)))
1349 (newsticker-treeview-next-new-or-immortal-item t t
)))))
1351 (defun newsticker-treeview-prev-new-or-immortal-item ()
1352 "Move to previous new or immortal item.
1353 Will move to previous feed until an item is found."
1355 (newsticker--treeview-restore-layout)
1356 (newsticker--treeview-list-clear-highlight)
1357 (unless (catch 'found
1359 (save-current-buffer
1360 (set-buffer (newsticker--treeview-list-buffer))
1364 (when (memq (newsticker--age
1365 (newsticker--treeview-get-selected-item))
1367 (newsticker-treeview-show-item)
1370 (throw 'found nil
))))
1371 (when (newsticker-treeview-prev-feed t
)
1372 (set-buffer (newsticker--treeview-list-buffer))
1373 (goto-char (point-max))
1374 (newsticker-treeview-prev-new-or-immortal-item))))
1376 (defun newsticker--treeview-get-selected-item ()
1377 "Return item that is currently selected in list buffer."
1379 (set-buffer (newsticker--treeview-list-buffer))
1381 (get-text-property (point) :nt-item
)))
1383 (defun newsticker-treeview-mark-item-old (&optional dont-proceed
)
1384 "Mark current item as old unless it is obsolete.
1385 Move to next item unless DONT-PROCEED is non-nil."
1387 (let ((item (newsticker--treeview-get-selected-item)))
1388 (unless (eq (newsticker--age item
) 'obsolete
)
1389 (newsticker--treeview-mark-item item
'old
)))
1390 (unless dont-proceed
1391 (newsticker-treeview-next-item)))
1393 (defun newsticker-treeview-toggle-item-immortal ()
1394 "Toggle immortality of current item."
1396 (let* ((item (newsticker--treeview-get-selected-item))
1397 (new-age (if (eq (newsticker--age item
) 'immortal
)
1400 (newsticker--treeview-mark-item item new-age
)
1401 (newsticker-treeview-next-item)))
1403 (defun newsticker--treeview-mark-item (item new-age
)
1404 "Mark ITEM with NEW-AGE."
1406 (setcar (nthcdr 4 item
) new-age
)
1407 ;; clean up ticker FIXME
1409 (newsticker--cache-save-feed
1410 (newsticker--cache-get-feed (intern newsticker--treeview-current-feed
)))
1411 (newsticker--treeview-tree-do-update-tags newsticker--treeview-vfeed-tree
))
1413 (defun newsticker-treeview-mark-list-items-old ()
1414 "Mark all listed items as old."
1416 (let ((current-feed (or newsticker--treeview-current-feed
1417 newsticker--treeview-current-vfeed
)))
1419 (set-buffer (newsticker--treeview-list-buffer))
1420 (goto-char (point-min))
1422 (let ((item (get-text-property (point) :nt-item
)))
1423 (unless (memq (newsticker--age item
) '(immortal obsolete
))
1424 (newsticker--treeview-mark-item item
'old
)))
1426 (newsticker--treeview-tree-update-tags)
1428 (newsticker-treeview-jump current-feed
))))
1430 (defun newsticker-treeview-save-item ()
1431 "Save current item."
1433 (newsticker-save-item (or newsticker--treeview-current-feed
1434 newsticker--treeview-current-vfeed
)
1435 (newsticker--treeview-get-selected-item)))
1437 (defun newsticker-treeview-browse-url-item ()
1438 "Convert current item to HTML and call `browse-url' on result."
1440 (newsticker-browse-url-item (or newsticker--treeview-current-feed
1441 newsticker--treeview-current-vfeed
)
1442 (newsticker--treeview-get-selected-item)))
1444 (defun newsticker--treeview-set-current-node (node)
1445 "Make NODE the current node."
1447 (set-buffer (newsticker--treeview-tree-buffer))
1448 (setq newsticker--treeview-current-node-id
1449 (widget-get node
:nt-id
))
1450 (setq newsticker--treeview-current-feed
(widget-get node
:nt-feed
))
1451 (setq newsticker--treeview-current-vfeed
(widget-get node
:nt-vfeed
))
1452 (newsticker--treeview-tree-update-highlight)))
1454 (defun newsticker--treeview-get-first-child (node)
1455 "Get first child of NODE."
1456 (let ((children (widget-get node
:children
)))
1461 (defun newsticker--treeview-get-second-child (node)
1462 "Get scond child of NODE."
1463 (let ((children (widget-get node
:children
)))
1465 (car (cdr children
))
1468 (defun newsticker--treeview-get-last-child (node)
1469 "Get last child of NODE."
1470 ;;(message "newsticker--treeview-get-last-child %s" (widget-get node :tag))
1471 (let ((children (widget-get node
:children
)))
1473 (car (reverse children
))
1476 (defun newsticker--treeview-get-feed-vfeed (node)
1477 "Get (virtual) feed of NODE."
1478 (or (widget-get node
:nt-feed
) (widget-get node
:nt-vfeed
)))
1480 (defun newsticker--treeview-get-next-sibling (node)
1481 "Get next sibling of NODE."
1482 (let ((parent (widget-get node
:parent
)))
1484 (let ((children (widget-get parent
:children
)))
1486 (if (newsticker--treeview-nodes-eq (car children
) node
)
1487 (throw 'found
(car (cdr children
))))
1488 (setq children
(cdr children
)))))))
1490 (defun newsticker--treeview-get-prev-sibling (node)
1491 "Get previous sibling of NODE."
1492 (let ((parent (widget-get node
:parent
)))
1494 (let ((children (widget-get parent
:children
))
1497 (if (and (newsticker--treeview-nodes-eq (car children
) node
)
1498 (widget-get prev
:nt-id
))
1499 (throw 'found prev
))
1500 (setq prev
(car children
))
1501 (setq children
(cdr children
)))))))
1503 (defun newsticker--treeview-get-next-uncle (node)
1504 "Get next uncle of NODE, i.e. parent's next sibling."
1505 (let* ((parent (widget-get node
:parent
))
1506 (grand-parent (widget-get parent
:parent
)))
1508 (let ((uncles (widget-get grand-parent
:children
)))
1510 (if (newsticker--treeview-nodes-eq (car uncles
) parent
)
1511 (throw 'found
(car (cdr uncles
))))
1512 (setq uncles
(cdr uncles
)))))))
1514 (defun newsticker--treeview-get-prev-uncle (node)
1515 "Get previous uncle of NODE, i.e. parent's previous sibling."
1516 (let* ((parent (widget-get node
:parent
))
1517 (grand-parent (widget-get parent
:parent
)))
1519 (let ((uncles (widget-get grand-parent
:children
))
1522 (if (newsticker--treeview-nodes-eq (car uncles
) parent
)
1523 (throw 'found prev
))
1524 (setq prev
(car uncles
))
1525 (setq uncles
(cdr uncles
)))))))
1527 (defun newsticker--treeview-get-other-tree ()
1529 (if (and (newsticker--treeview-get-current-node)
1530 (widget-get (newsticker--treeview-get-current-node) :nt-feed
))
1531 newsticker--treeview-vfeed-tree
1532 newsticker--treeview-feed-tree
))
1534 (defun newsticker--treeview-activate-node (node &optional backward
)
1536 If NODE is a tree widget the node's first subnode is activated.
1537 If BACKWARD is non-nil the last subnode of the previous sibling
1539 (newsticker--treeview-set-current-node node
)
1540 (save-current-buffer
1541 (set-buffer (newsticker--treeview-tree-buffer))
1542 (cond ((eq (widget-type node
) 'tree-widget
)
1543 (unless (widget-get node
:open
)
1544 (widget-put node
:open nil
)
1545 (widget-apply-action node
))
1546 (newsticker--treeview-activate-node
1548 (newsticker--treeview-get-last-child node
)
1549 (newsticker--treeview-get-second-child node
))))
1551 (widget-apply-action node
)))))
1553 (defun newsticker--treeview-first-feed ()
1554 "Jump to the depth-first feed in the newsticker-groups tree."
1555 (newsticker-treeview-jump
1556 (car (reverse (newsticker--group-get-feeds newsticker-groups t
)))))
1558 (defun newsticker-treeview-next-feed (&optional stay-in-tree
)
1560 Optional argument STAY-IN-TREE prevents moving from real feed
1561 tree to virtual feed tree or vice versa.
1562 Return t if a new feed was activated, nil otherwise."
1564 (newsticker--treeview-restore-layout)
1565 (let ((cur (newsticker--treeview-get-current-node))
1569 (or (newsticker--treeview-get-next-sibling cur
)
1570 (newsticker--treeview-get-next-uncle cur
)
1571 (and (not stay-in-tree
)
1572 (newsticker--treeview-get-other-tree)))
1573 (car (widget-get newsticker--treeview-feed-tree
:children
))))
1576 (newsticker--treeview-activate-node new
)
1577 (newsticker--treeview-tree-update-highlight)
1581 (defun newsticker-treeview-prev-feed (&optional stay-in-tree
)
1582 "Move to previous feed.
1583 Optional argument STAY-IN-TREE prevents moving from real feed
1584 tree to virtual feed tree or vice versa.
1585 Return t if a new feed was activated, nil otherwise."
1587 (newsticker--treeview-restore-layout)
1588 (let ((cur (newsticker--treeview-get-current-node))
1594 (or (newsticker--treeview-get-prev-sibling cur
)
1595 (newsticker--treeview-get-prev-uncle cur
)
1596 (and (not stay-in-tree
)
1597 (newsticker--treeview-get-other-tree)))
1598 (car (widget-get newsticker--treeview-feed-tree
:children
))))
1601 (newsticker--treeview-activate-node new t
)
1602 (newsticker--treeview-tree-update-highlight)
1607 (defun newsticker-treeview-next-page ()
1608 "Scroll item buffer."
1610 (save-selected-window
1611 (select-window (newsticker--treeview-item-window) t
)
1615 (goto-char (point-min))))))
1618 (defun newsticker--treeview-unfold-node (feed-name)
1619 "Recursively show subtree above the node that represents FEED-NAME."
1620 (let ((node (newsticker--treeview-get-node-of-feed feed-name
)))
1622 (let* ((group-name (or (car (newsticker--group-find-group-for-feed
1624 (newsticker--group-get-parent-group
1626 (newsticker--treeview-unfold-node group-name
))
1627 (setq node
(newsticker--treeview-get-node-of-feed feed-name
)))
1630 (set-buffer (newsticker--treeview-tree-buffer))
1631 (widget-put node
:nt-selected t
)
1632 (widget-apply-action node
)
1633 (newsticker--treeview-set-current-node node
)))))
1635 (defun newsticker-treeview-jump (feed-name)
1636 "Jump to feed FEED-NAME in newsticker treeview."
1638 (list (let ((completion-ignore-case t
))
1641 (append '("new" "obsolete" "immortal" "all")
1642 (mapcar 'car
(append newsticker-url-list
1643 newsticker-url-list-defaults
)))
1645 (newsticker--treeview-unfold-node feed-name
))
1647 ;; ======================================================================
1649 ;; ======================================================================
1650 (defun newsticker--group-do-find-group-for-feed (feed-name node
)
1651 "Recursively find FEED-NAME in NODE."
1652 (if (member feed-name
(cdr node
))
1656 (newsticker--group-do-find-group-for-feed feed-name n
)))
1659 (defun newsticker--group-find-group-for-feed (feed-name)
1660 "Find group containing FEED-NAME."
1662 (newsticker--group-do-find-group-for-feed feed-name
1666 (defun newsticker--group-do-get-group (name node
)
1667 "Recursively find group with NAME below NODE."
1668 (if (string= name
(car node
))
1672 (newsticker--group-do-get-group name n
)))
1675 (defun newsticker--group-get-group (name)
1676 "Find group with NAME."
1680 (newsticker--group-do-get-group name n
)))
1684 (defun newsticker--group-do-get-parent-group (name node parent
)
1685 "Recursively find parent group for NAME from NODE which is a child of PARENT."
1686 (if (string= name
(car node
))
1687 (throw 'found parent
)
1690 (newsticker--group-do-get-parent-group name n
(car node
))))
1693 (defun newsticker--group-get-parent-group (name)
1694 "Find parent group for group named NAME."
1698 (newsticker--group-do-get-parent-group
1699 name n
(car newsticker-groups
))))
1704 (defun newsticker--group-get-subgroups (group &optional recursive
)
1705 "Return list of subgroups for GROUP.
1706 If RECURSIVE is non-nil recursively get subgroups and return a nested list."
1710 (setq result
(cons (car n
) result
))
1711 (let ((subgroups (newsticker--group-get-subgroups n recursive
)))
1713 (setq result
(append subgroups result
))))))
1717 (defun newsticker--group-all-groups ()
1718 "Return nested list of all groups."
1719 (newsticker--group-get-subgroups newsticker-groups t
))
1721 (defun newsticker--group-get-feeds (group &optional recursive
)
1722 "Return list of all feeds in GROUP.
1723 If RECURSIVE is non-nil recursively get feeds of subgroups and
1724 return a nested list."
1728 (setq result
(cons n result
))
1730 (let ((subfeeds (newsticker--group-get-feeds n t
)))
1732 (setq result
(append subfeeds result
)))))))
1736 (defun newsticker-group-add-group (name parent
)
1737 "Add group NAME to group PARENT."
1739 (list (read-string "Group Name: ")
1740 (let ((completion-ignore-case t
))
1741 (completing-read "Parent Group: " (newsticker--group-all-groups)
1743 (if (newsticker--group-get-group name
)
1744 (error "Group %s exists already" name
))
1745 (let ((p (if (and parent
(not (string= parent
"")))
1746 (newsticker--group-get-group parent
)
1747 newsticker-groups
)))
1749 (error "Parent %s does not exist" parent
))
1750 (setcdr p
(cons (list name
) (cdr p
))))
1751 (newsticker--treeview-tree-update))
1753 (defun newsticker-group-move-feed (name group-name
&optional no-update
)
1754 "Move feed NAME to group GROUP-NAME.
1755 Update teeview afterwards unless NO-UPDATE is non-nil."
1757 (let ((completion-ignore-case t
))
1758 (list (completing-read "Feed Name: "
1759 (mapcar 'car newsticker-url-list
)
1760 nil t newsticker--treeview-current-feed
)
1761 (completing-read "Group Name: " (newsticker--group-all-groups)
1763 (let ((group (if (and group-name
(not (string= group-name
"")))
1764 (newsticker--group-get-group group-name
)
1765 newsticker-groups
)))
1767 (error "Group %s does not exist" group-name
))
1768 (while (let ((old-group
1769 (newsticker--group-find-group-for-feed name
)))
1771 (delete name old-group
))
1773 (setcdr group
(cons name
(cdr group
)))
1775 (newsticker--treeview-tree-update)
1776 (newsticker-treeview-update))))
1778 (defun newsticker-group-delete-group (name)
1779 "Remove group NAME."
1781 (let ((completion-ignore-case t
))
1782 (list (completing-read "Group Name: " (newsticker--group-all-groups)
1784 (let* ((g (newsticker--group-get-group name
))
1785 (p (or (newsticker--group-get-parent-group name
)
1786 newsticker-groups
)))
1788 (error "Group %s does not exist" name
))
1790 (newsticker--treeview-tree-update))
1792 (defun newsticker--count-groups (group)
1793 "Recursively count number of subgroups of GROUP."
1797 (setq result
(+ result
(newsticker--count-groups g
)))))
1801 (defun newsticker--count-grouped-feeds (group)
1802 "Recursively count number of feeds in GROUP and its subgroups."
1806 (setq result
(+ result
(newsticker--count-grouped-feeds g
)))
1807 (setq result
(1+ result
))))
1811 (defun newsticker--group-remove-obsolete-feeds (group)
1812 "Recursively remove obselete feeds from GROUP."
1814 (urls (append newsticker-url-list newsticker-url-list-defaults
)))
1818 (newsticker--group-remove-obsolete-feeds g
)))
1820 (setq result
(cons sub-groups result
))))
1822 (setq result
(cons g result
)))))
1825 (cons (car group
) (reverse result
))
1828 (defun newsticker--group-manage-orphan-feeds ()
1829 "Put unmanaged feeds into `newsticker-groups'.
1830 Remove obsolete feeds as well."
1831 (unless newsticker-groups
1832 (setq newsticker-groups
'("Feeds")))
1833 (let ((new-feed nil
)
1834 (grouped-feeds (newsticker--count-grouped-feeds newsticker-groups
)))
1836 (unless (newsticker--group-find-group-for-feed (car f
))
1838 (newsticker-group-move-feed (car f
) nil t
)))
1839 (append newsticker-url-list-defaults newsticker-url-list
))
1840 (setq newsticker-groups
1841 (newsticker--group-remove-obsolete-feeds newsticker-groups
))
1843 (not (= grouped-feeds
1844 (newsticker--count-grouped-feeds newsticker-groups
))))
1845 (newsticker--treeview-tree-update))))
1847 ;; ======================================================================
1849 ;; ======================================================================
1850 (defun newsticker--treeview-create-groups-menu (group-list
1852 "Create menu for GROUP-LIST omitting EXCLUDED-GROUP."
1853 (let ((menu (make-sparse-keymap (if (stringp (car group-list
))
1855 "Move to group..."))))
1858 (let ((title (if (stringp (car g
))
1860 "Move to group...")))
1861 (unless (eq g excluded-group
)
1862 (define-key menu
(vector (intern title
))
1863 (list 'menu-item title
1864 (newsticker--treeview-create-groups-menu
1865 (cdr g
) excluded-group
)))))))
1866 (reverse group-list
))
1869 (defun newsticker--treeview-create-tree-menu (feed-name)
1870 "Create tree menu for FEED-NAME."
1871 (let ((menu (make-sparse-keymap feed-name
)))
1872 (define-key menu
[newsticker-treeview-mark-list-items-old
]
1873 (list 'menu-item
"Mark all items old"
1874 'newsticker-treeview-mark-list-items-old
))
1875 (define-key menu
[move]
1876 (list 'menu-item "Move to group..."
1877 (newsticker--treeview-create-groups-menu
1879 (newsticker--group-get-group feed-name))))
1882 (defvar newsticker-treeview-list-menu
1883 (let ((menu (make-sparse-keymap "Newsticker List")))
1884 (define-key menu [newsticker-treeview-mark-list-items-old]
1885 (list 'menu-item "Mark all items old"
1886 'newsticker-treeview-mark-list-items-old))
1888 "Map for newsticker tree menu.")
1890 (defvar newsticker-treeview-mode-map
1891 (let ((map (make-sparse-keymap 'newsticker-treeview-mode-map)))
1892 (define-key map " " 'newsticker-treeview-next-page)
1893 (define-key map "a" 'newsticker-add-url)
1894 (define-key map "b" 'newsticker-treeview-browse-url-item)
1895 (define-key map "F" 'newsticker-treeview-prev-feed)
1896 (define-key map "f" 'newsticker-treeview-next-feed)
1897 (define-key map "g" 'newsticker-treeview-get-news)
1898 (define-key map "G" 'newsticker-get-all-news)
1899 (define-key map "i" 'newsticker-treeview-toggle-item-immortal)
1900 (define-key map "j" 'newsticker-treeview-jump)
1901 (define-key map "n" 'newsticker-treeview-next-item)
1902 (define-key map "N" 'newsticker-treeview-next-new-or-immortal-item)
1903 (define-key map "O" 'newsticker-treeview-mark-list-items-old)
1904 (define-key map "o" 'newsticker-treeview-mark-item-old)
1905 (define-key map "p" 'newsticker-treeview-prev-item)
1906 (define-key map "P" 'newsticker-treeview-prev-new-or-immortal-item)
1907 (define-key map "q" 'newsticker-treeview-quit)
1908 (define-key map "S" 'newsticker-treeview-save-item)
1909 (define-key map "s" 'newsticker-treeview-save)
1910 (define-key map "u" 'newsticker-treeview-update)
1911 (define-key map "v" 'newsticker-treeview-browse-url)
1912 ;;(define-key map "\n" 'newsticker-treeview-scroll-item)
1913 ;;(define-key map "\C-m" 'newsticker-treeview-scroll-item)
1914 (define-key map "\M-m" 'newsticker-group-move-feed)
1915 (define-key map "\M-a" 'newsticker-group-add-group)
1917 "Mode map for newsticker treeview.")
1919 (defun newsticker-treeview-mode ()
1920 "Major mode for Newsticker Treeview.
1921 \\{newsticker-treeview-mode-map}"
1922 (kill-all-local-variables)
1923 (use-local-map newsticker-treeview-mode-map)
1924 (setq major-mode 'newsticker-treeview-mode)
1925 (setq mode-name "Newsticker TV")
1926 (if (boundp 'tool-bar-map)
1927 (set (make-local-variable 'tool-bar-map)
1928 newsticker-treeview-tool-bar-map))
1929 (setq buffer-read-only t
1932 (define-derived-mode newsticker-treeview-list-mode newsticker-treeview-mode
1934 (let ((header (concat
1935 (propertize " " 'display '(space :align-to 0))
1936 (newsticker-treeview-list-make-sort-button "*" 'sort-by-age)
1937 (propertize " " 'display '(space :align-to 2))
1938 (if newsticker--treeview-list-show-feed
1940 (propertize " " 'display '(space :align-to 12)))
1942 (newsticker-treeview-list-make-sort-button "Date"
1944 (if newsticker--treeview-list-show-feed
1945 (propertize " " 'display '(space :align-to 28))
1946 (propertize " " 'display '(space :align-to 18)))
1947 (newsticker-treeview-list-make-sort-button "Title"
1949 (setq header-line-format header))
1950 (define-key newsticker-treeview-list-mode-map [down-mouse-3]
1951 newsticker-treeview-list-menu))
1953 (defun newsticker-treeview-tree-click (event)
1954 "Handle click EVENT on a tag in the newsticker tree."
1956 (newsticker--treeview-restore-layout)
1958 (switch-to-buffer (window-buffer (posn-window (event-end event))))
1959 (newsticker-treeview-tree-do-click (posn-point (event-end event)))))
1961 (defun newsticker-treeview-tree-do-click (&optional pos event)
1962 "Actually handle click event.
1963 POS gives the position where EVENT occurred."
1965 (let* ((pos (or pos (point)))
1966 (nt-id (get-text-property pos :nt-id))
1967 (item (get-text-property pos :nt-item)))
1969 ;; click in list buffer
1970 (newsticker-treeview-show-item))
1972 ;; click in tree buffer
1973 (let ((w (newsticker--treeview-get-node nt-id)))
1975 (newsticker--treeview-tree-update-tag w t t)
1976 (setq w (newsticker--treeview-get-node nt-id))
1977 (widget-put w :nt-selected t)
1978 (widget-apply w :action event)
1979 (newsticker--treeview-set-current-node w))))))
1980 (newsticker--treeview-tree-update-highlight))
1982 (defun newsticker--treeview-restore-layout ()
1983 "Restore treeview buffers."
1986 (let ((win (nth i newsticker--treeview-windows))
1987 (buf (nth i newsticker--treeview-buffers)))
1988 (unless (window-live-p win)
1989 (newsticker--treeview-window-init)
1990 (newsticker--treeview-buffer-init)
1992 (unless (eq (window-buffer win) buf)
1993 (set-window-buffer win buf t))))))
1995 (defun newsticker--treeview-frame-init ()
1996 "Initialize treeview frame."
1997 (when newsticker-treeview-own-frame
1998 (unless (and newsticker--frame (frame-live-p newsticker--frame))
1999 (setq newsticker--frame (make-frame '((name . "Newsticker")))))
2000 (select-frame-set-input-focus newsticker--frame)
2001 (raise-frame newsticker--frame)))
2003 (defun newsticker--treeview-window-init ()
2004 "Initialize treeview windows."
2005 (setq newsticker--saved-window-config (current-window-configuration))
2006 (setq newsticker--treeview-windows nil)
2007 (setq newsticker--treeview-buffers nil)
2008 (delete-other-windows)
2009 (split-window-horizontally newsticker-treeview-treewindow-width)
2010 (add-to-list 'newsticker--treeview-windows (selected-window) t)
2012 (split-window-vertically newsticker-treeview-listwindow-height)
2013 (add-to-list 'newsticker--treeview-windows (selected-window) t)
2015 (add-to-list 'newsticker--treeview-windows (selected-window) t)
2019 (defun newsticker-treeview ()
2020 "Start newsticker treeview."
2022 (newsticker--treeview-load)
2023 (setq newsticker--sentinel-callback 'newsticker-treeview-update)
2024 (newsticker--treeview-frame-init)
2025 (newsticker--treeview-window-init)
2026 (newsticker--treeview-buffer-init)
2027 (newsticker--group-manage-orphan-feeds)
2028 (newsticker--treeview-set-current-node newsticker--treeview-feed-tree)
2029 (newsticker-start t) ;; will start only if not running
2030 (newsticker-treeview-update)
2031 (newsticker--treeview-item-show-text
2033 "Welcome to newsticker!"))
2035 (defun newsticker-treeview-get-news ()
2036 "Get news for current feed."
2038 (when newsticker--treeview-current-feed
2039 (newsticker-get-news newsticker--treeview-current-feed)))
2041 (provide 'newsticker-treeview)
2043 ;; arch-tag: 5dbaff48-1f3e-4fc6-8ebd-e966fc90d2d4
2044 ;;; newst-treeview.el ends here