2 * This file is part of DisOrder
3 * Copyright (C) 2008 Richard Kettlewell
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 /** @file disobedience/choose.c
19 * @brief Hierarchical track selection and search
21 * We now use an ordinary GtkTreeStore/GtkTreeView.
23 * We don't want to pull the entire tree in memory, but we want directories to
24 * show up as having children. Therefore we give directories a placeholder
25 * child and replace their children when they are opened. Placeholders have
26 * TRACK_COLUMN="" and ISFILE_COLUMN=FALSE (so that they don't get check boxes,
30 * - sweep up contracted nodes, replacing their content with a placeholder
33 #include "disobedience.h"
35 #include "multidrag.h"
36 #include <gdk/gdkkeysyms.h>
38 /** @brief Drag types */
39 static const GtkTargetEntry choose_targets
[] = {
41 (char *)"text/x-disorder-playable-tracks", /* drag type */
42 GTK_TARGET_SAME_APP
|GTK_TARGET_OTHER_WIDGET
, /* copying between widgets */
47 /** @brief The current selection tree */
48 GtkTreeStore
*choose_store
;
50 /** @brief The view onto the selection tree */
51 GtkWidget
*choose_view
;
53 /** @brief The selection tree's selection */
54 GtkTreeSelection
*choose_selection
;
56 /** @brief Count of file listing operations in flight */
57 static int choose_list_in_flight
;
59 /** @brief If nonzero autocollapse column won't be set */
60 static int choose_suppress_set_autocollapse
;
62 static char *choose_get_string(GtkTreeIter
*iter
, int column
) {
64 gtk_tree_model_get(GTK_TREE_MODEL(choose_store
), iter
,
67 char *s
= xstrdup(gs
);
72 char *choose_get_track(GtkTreeIter
*iter
) {
73 char *s
= choose_get_string(iter
, TRACK_COLUMN
);
74 return *s ? s
: 0; /* Placeholder -> NULL */
77 char *choose_get_sort(GtkTreeIter
*iter
) {
78 return choose_get_string(iter
, SORT_COLUMN
);
81 char *choose_get_display(GtkTreeIter
*iter
) {
82 return choose_get_string(iter
, NAME_COLUMN
);
85 int choose_is_file(GtkTreeIter
*iter
) {
87 gtk_tree_model_get(GTK_TREE_MODEL(choose_store
), iter
,
88 ISFILE_COLUMN
, &isfile
,
93 int choose_is_dir(GtkTreeIter
*iter
) {
95 gtk_tree_model_get(GTK_TREE_MODEL(choose_store
), iter
,
96 ISFILE_COLUMN
, &isfile
,
100 return !choose_is_placeholder(iter
);
103 int choose_is_placeholder(GtkTreeIter
*iter
) {
104 return choose_get_string(iter
, TRACK_COLUMN
)[0] == 0;
107 int choose_can_autocollapse(GtkTreeIter
*iter
) {
108 gboolean autocollapse
;
109 gtk_tree_model_get(GTK_TREE_MODEL(choose_store
), iter
,
110 AUTOCOLLAPSE_COLUMN
, &autocollapse
,
115 /** @brief Remove node @p it and all its children
116 * @param it Iterator, updated to point to next
117 * @return True if iterator remains valid
119 * TODO is this necessary? gtk_tree_store_remove() does not document what
120 * happens to children.
122 static gboolean
choose_remove_node(GtkTreeIter
*it
) {
123 GtkTreeIter child
[1];
124 gboolean childv
= gtk_tree_model_iter_children(GTK_TREE_MODEL(choose_store
),
128 childv
= choose_remove_node(child
);
129 return gtk_tree_store_remove(choose_store
, it
);
132 /** @brief Update length and state fields */
133 static gboolean
choose_set_state_callback(GtkTreeModel
attribute((unused
)) *model
,
134 GtkTreePath
attribute((unused
)) *path
,
136 gpointer
attribute((unused
)) data
) {
137 if(choose_is_file(it
)) {
138 const char *track
= choose_get_track(it
);
139 const long l
= namepart_length(track
);
142 byte_snprintf(length
, sizeof length
, "%ld:%02ld", l
/ 60, l
% 60);
145 gtk_tree_store_set(choose_store
, it
,
146 LENGTH_COLUMN
, length
,
147 STATE_COLUMN
, queued(track
),
149 if(choose_is_search_result(track
))
150 gtk_tree_store_set(choose_store
, it
,
151 BG_COLUMN
, SEARCH_RESULT_BG
,
152 FG_COLUMN
, SEARCH_RESULT_FG
,
155 gtk_tree_store_set(choose_store
, it
,
156 BG_COLUMN
, (char *)0,
157 FG_COLUMN
, (char *)0,
160 return FALSE
; /* continue walking */
163 /** @brief Called when the queue or playing track change */
164 static void choose_set_state(const char attribute((unused
)) *event
,
165 void attribute((unused
)) *eventdata
,
166 void attribute((unused
)) *callbackdata
) {
167 gtk_tree_model_foreach(GTK_TREE_MODEL(choose_store
),
168 choose_set_state_callback
,
172 /** @brief (Re-)populate a node
173 * @param parent_ref Node to populate or NULL to fill root
174 * @param nvec Number of children to add
175 * @param vec Children
176 * @param isfile 1 if children are files, 0 if directories
178 * Adjusts the set of files (or directories) below @p parent_ref to match those
179 * listed in @p nvec and @p vec.
181 * @p parent_ref will be destroyed.
183 static void choose_populate(GtkTreeRowReference
*parent_ref
,
184 int nvec
, char **vec
,
186 const char *type
= isfile ?
"track" : "dir";
187 //fprintf(stderr, "%d new children of type %s\n", nvec, type);
190 /* Compute parent_* */
191 GtkTreeIter pit
[1], *parent_it
;
192 GtkTreePath
*parent_path
;
194 parent_path
= gtk_tree_row_reference_get_path(parent_ref
);
196 gboolean pitv
= gtk_tree_model_get_iter(GTK_TREE_MODEL(choose_store
),
199 /*fprintf(stderr, "choose_populate %s: parent path is [%s]\n",
201 gtk_tree_path_to_string(parent_path));*/
205 /*fprintf(stderr, "choose_populate %s: populating the root\n",
208 /* Both td[] and the current node set are sorted so we can do a single linear
209 * pass to insert new nodes and remove unwanted ones. The total performance
210 * may be worse than linear depending on the performance of GTK+'s insert and
211 * delete operations. */
212 //fprintf(stderr, "sorting tracks\n");
213 struct tracksort_data
*td
= tracksort_init(nvec
, vec
, type
);
215 gboolean itv
= gtk_tree_model_iter_children(GTK_TREE_MODEL(choose_store
),
218 int inserted
= 0, deleted_placeholder
= 0;
219 //fprintf(stderr, "inserting tracks type=%s\n", type);
220 while(nvec
> 0 || itv
) {
221 /*fprintf(stderr, "td[] = %s, it=%s [%s]\n",
222 nvec > 0 ? td->track : "(none)",
223 itv ? choose_get_track(it) : "(!itv)",
224 itv ? (choose_is_file(it) ? "file" : "dir") : "");*/
225 enum { INSERT
, DELETE
, SKIP_TREE
, SKIP_BOTH
} action
;
226 const char *track
= itv ?
choose_get_track(it
) : 0;
228 //fprintf(stderr, " placeholder\n");
230 ++deleted_placeholder
;
231 } else if(nvec
> 0 && itv
) {
232 /* There's both a tree row and a td[] entry */
233 const int cmp
= compare_tracks(td
->sort
, choose_get_sort(it
),
234 td
->display
, choose_get_display(it
),
236 //fprintf(stderr, " cmp=%d\n", cmp);
238 /* td < it, so we insert td before it */
241 /* td > it, so we must either delete it (if the same type) or skip it */
242 if(choose_is_file(it
) == isfile
)
247 /* td = it, so we step past both */
249 } else if(nvec
> 0) {
250 /* We've reached the end of the tree rows, but new have tracks left in
252 //fprintf(stderr, " inserting\n");
255 /* We've reached the end of the new tracks from td[], but there are
256 * further tracks in the tree */
257 //fprintf(stderr, " deleting\n");
258 if(choose_is_file(it
) == isfile
)
266 //fprintf(stderr, " INSERT %s\n", td->track);
267 /* Insert a new row from td[] before it, or at the end if it is no longer
269 GtkTreeIter child
[1];
270 gtk_tree_store_insert_before(choose_store
,
272 parent_it
, /* parent */
273 itv ? it
: NULL
); /* successor */
274 gtk_tree_store_set(choose_store
, child
,
275 NAME_COLUMN
, td
->display
,
276 ISFILE_COLUMN
, isfile
,
277 TRACK_COLUMN
, td
->track
,
278 SORT_COLUMN
, td
->sort
,
279 AUTOCOLLAPSE_COLUMN
, FALSE
,
281 /* Update length and state; we expect this to kick off length lookups
282 * rather than necessarily get the right value the first time round. */
283 choose_set_state_callback(0, 0, child
, 0);
284 /* If we inserted a directory, insert a placeholder too, so it appears to
285 * have children; it will be deleted when we expand the directory. */
287 //fprintf(stderr, " inserting a placeholder\n");
288 GtkTreeIter placeholder
[1];
290 gtk_tree_store_append(choose_store
, placeholder
, child
);
291 gtk_tree_store_set(choose_store
, placeholder
,
292 NAME_COLUMN
, "Waddling...",
294 ISFILE_COLUMN
, FALSE
,
303 //fprintf(stderr, " SKIP_BOTH\n");
308 //fprintf(stderr, " SKIP_TREE\n");
309 itv
= gtk_tree_model_iter_next(GTK_TREE_MODEL(choose_store
), it
);
312 //fprintf(stderr, " DELETE\n");
313 itv
= choose_remove_node(it
);
317 /*fprintf(stderr, "inserted=%d deleted_placeholder=%d\n\n",
318 inserted, deleted_placeholder);*/
320 /* If we deleted a placeholder then we must re-expand the row */
321 if(deleted_placeholder
) {
322 ++choose_suppress_set_autocollapse
;
323 gtk_tree_view_expand_row(GTK_TREE_VIEW(choose_view
), parent_path
, FALSE
);
324 --choose_suppress_set_autocollapse
;
326 gtk_tree_row_reference_free(parent_ref
);
327 gtk_tree_path_free(parent_path
);
330 /* We only notify others that we've inserted tracks when there are no more
331 * insertions pending, so that they don't have to keep track of how many
332 * requests they've made. */
333 if(--choose_list_in_flight
== 0) {
334 /* Notify interested parties that we inserted some tracks, AFTER making
335 * sure that the row is properly expanded */
336 //fprintf(stderr, "raising choose-more-tracks\n");
337 event_raise("choose-more-tracks", 0);
339 //fprintf(stderr, "choose_list_in_flight -> %d-\n", choose_list_in_flight);
342 static void choose_dirs_completed(void *v
,
344 int nvec
, char **vec
) {
346 popup_protocol_error(0, err
);
349 choose_populate(v
, nvec
, vec
, 0/*!isfile*/);
352 static void choose_files_completed(void *v
,
354 int nvec
, char **vec
) {
356 popup_protocol_error(0, err
);
359 choose_populate(v
, nvec
, vec
, 1/*isfile*/);
362 void choose_play_completed(void attribute((unused
)) *v
,
365 popup_protocol_error(0, err
);
368 static void choose_state_toggled
369 (GtkCellRendererToggle
attribute((unused
)) *cell_renderer
,
371 gpointer
attribute((unused
)) user_data
) {
373 /* Identify the track */
375 gtk_tree_model_get_iter_from_string(GTK_TREE_MODEL(choose_store
),
380 if(!choose_is_file(it
))
382 const char *track
= choose_get_track(it
);
385 disorder_eclient_play(client
, track
, choose_play_completed
, 0);
389 /** @brief (Re-)get the children of @p path
390 * @param path Path to target row
391 * @param iter Iterator pointing at target row
393 * Called from choose_row_expanded() to make sure that the contents are present
394 * and from choose_refill_callback() to (re-)synchronize.
396 static void choose_refill_row(GtkTreePath
*path
,
398 const char *track
= choose_get_track(iter
);
399 disorder_eclient_files(client
, choose_files_completed
,
402 gtk_tree_row_reference_new(GTK_TREE_MODEL(choose_store
),
404 disorder_eclient_dirs(client
, choose_dirs_completed
,
407 gtk_tree_row_reference_new(GTK_TREE_MODEL(choose_store
),
409 /* The row references are destroyed in the _completed handlers. */
410 choose_list_in_flight
+= 2;
413 static void choose_row_expanded(GtkTreeView
attribute((unused
)) *treeview
,
416 gpointer
attribute((unused
)) user_data
) {
417 /*fprintf(stderr, "row-expanded path=[%s]\n\n",
418 gtk_tree_path_to_string(path));*/
419 /* We update a node's contents whenever it is expanded, even if it was
420 * already populated; the effect is that contracting and expanding a node
421 * suffices to update it to the latest state on the server. */
422 choose_refill_row(path
, iter
);
423 if(!choose_suppress_set_autocollapse
) {
424 if(choose_auto_expanding
) {
425 /* This was an automatic expansion; mark it the row for auto-collapse. */
426 gtk_tree_store_set(choose_store
, iter
,
427 AUTOCOLLAPSE_COLUMN
, TRUE
,
429 /*fprintf(stderr, "enable auto-collapse for %s\n",
430 gtk_tree_path_to_string(path));*/
432 /* This was a manual expansion. Inhibit automatic collapse on this row
433 * and all its ancestors. */
436 gtk_tree_store_set(choose_store
, iter
,
437 AUTOCOLLAPSE_COLUMN
, FALSE
,
439 /*fprintf(stderr, "suppress auto-collapse for %s\n",
440 gtk_tree_model_get_string_from_iter(GTK_TREE_MODEL(choose_store),
442 GtkTreeIter child
= *iter
;
443 itv
= gtk_tree_model_iter_parent(GTK_TREE_MODEL(choose_store
),
447 /* The effect of this is that if you expand a row that's actually a
448 * sibling of the real target of the auto-expansion, it stays expanded
449 * when you clear a search. That's find and good, but it _still_ stays
450 * expanded if you expand it and then collapse it.
452 * An alternative policy would be to only auto-collapse rows that don't
453 * have any expanded children (apart from ones also subject to
454 * auto-collapse). I'm not sure what the most usable policy is.
460 static void choose_auto_collapse_callback(GtkTreeView
*tree_view
,
462 gpointer
attribute((unused
)) user_data
) {
465 gtk_tree_model_get_iter(GTK_TREE_MODEL(choose_store
), it
, path
);
466 if(choose_can_autocollapse(it
)) {
467 /*fprintf(stderr, "collapse %s\n",
468 gtk_tree_path_to_string(path));*/
469 gtk_tree_store_set(choose_store
, it
,
470 AUTOCOLLAPSE_COLUMN
, FALSE
,
472 gtk_tree_view_collapse_row(tree_view
, path
);
476 /** @brief Perform automatic collapse after a search is cleared */
477 void choose_auto_collapse(void) {
478 gtk_tree_view_map_expanded_rows(GTK_TREE_VIEW(choose_view
),
479 choose_auto_collapse_callback
,
483 /** @brief Called from choose_refill() with each expanded row */
484 static void choose_refill_callback(GtkTreeView
attribute((unused
)) *tree_view
,
486 gpointer
attribute((unused
)) user_data
) {
489 gtk_tree_model_get_iter(GTK_TREE_MODEL(choose_store
), it
, path
);
490 choose_refill_row(path
, it
);
493 /** @brief Synchronize all visible data with the server
495 * Called at startup, when a rescan completes, and via periodic_slow().
497 static void choose_refill(const char attribute((unused
)) *event
,
498 void attribute((unused
)) *eventdata
,
499 void attribute((unused
)) *callbackdata
) {
500 //fprintf(stderr, "choose_refill\n");
501 /* Update the root */
502 disorder_eclient_files(client
, choose_files_completed
, "", NULL
, NULL
);
503 disorder_eclient_dirs(client
, choose_dirs_completed
, "", NULL
, NULL
);
504 choose_list_in_flight
+= 2;
505 /* Update all expanded rows */
506 gtk_tree_view_map_expanded_rows(GTK_TREE_VIEW(choose_view
),
507 choose_refill_callback
,
509 //fprintf(stderr, "choose_list_in_flight -> %d+\n", choose_list_in_flight);
512 /** @brief Called for key-*-event on the main view
514 static gboolean
choose_key_event(GtkWidget
attribute((unused
)) *widget
,
516 gpointer user_data
) {
517 /*fprintf(stderr, "choose_key_event type=%d state=%#x keyval=%#x\n",
518 event->type, event->state, event->keyval);*/
519 switch(event
->keyval
) {
526 return FALSE
; /* We'll take these */
528 /* ^F is expected to start a search. We implement this by focusing the
529 * search entry box. */
530 if((event
->state
& ~(GDK_LOCK_MASK
|GDK_SHIFT_MASK
)) == GDK_CONTROL_MASK
531 && event
->type
== GDK_KEY_PRESS
) {
533 return TRUE
; /* Handled it */
537 /* ^G is expected to go the next match. We simulate a click on the 'next'
539 if((event
->state
& ~(GDK_LOCK_MASK
|GDK_SHIFT_MASK
)) == GDK_CONTROL_MASK
540 && event
->type
== GDK_KEY_PRESS
) {
541 choose_next_clicked(0, 0);
542 return TRUE
; /* Handled it */
546 /* Anything not handled we redirected to the search entry field */
547 gtk_widget_event(user_data
, (GdkEvent
*)event
);
548 return TRUE
; /* Handled it */
551 static gboolean
choose_multidrag_predicate(GtkTreePath
attribute((unused
)) *path
,
553 return choose_is_file(iter
);
557 /** @brief Callback to add selected tracks to the selection data
559 * Called from choose_drag_data_get().
561 static void choose_drag_data_get_collect(GtkTreeModel
attribute((unused
)) *model
,
562 GtkTreePath
attribute((unused
)) *path
,
565 struct dynstr
*const result
= data
;
567 if(choose_is_file(iter
)) { /* no diretories */
568 dynstr_append_string(result
, ""); /* no ID */
569 dynstr_append(result
, '\n');
570 dynstr_append_string(result
, choose_get_track(iter
));
571 dynstr_append(result
, '\n');
575 /** @brief Called to extract the dragged data from the choose view
576 * @param w Source widget (the tree view)
577 * @param dc Drag context
578 * @param data Where to put the answer
579 * @param info_ Target @c info parameter
580 * @param time_ Time data requested (for some reason not a @c time_t)
581 * @param user_data The queuelike
583 * Closely analogous to ql_drag_data_get(), and uses the same data format.
584 * IDs are sent as empty strings.
586 static void choose_drag_data_get(GtkWidget
*w
,
587 GdkDragContext
attribute((unused
)) *dc
,
588 GtkSelectionData
*data
,
589 guint
attribute((unused
)) info_
,
590 guint
attribute((unused
)) time_
,
591 gpointer
attribute((unused
)) user_data
) {
592 struct dynstr result
[1];
593 GtkTreeSelection
*sel
;
595 sel
= gtk_tree_view_get_selection(GTK_TREE_VIEW(w
));
597 gtk_tree_selection_selected_foreach(sel
,
598 choose_drag_data_get_collect
,
600 gtk_selection_data_set(data
,
602 8, (guchar
*)result
->vec
, result
->nvec
);
605 /** @brief Create the choose tab */
606 GtkWidget
*choose_widget(void) {
607 /* Create the tree store. */
608 choose_store
= gtk_tree_store_new(CHOOSE_COLUMNS
,
619 /* Create the view */
620 choose_view
= gtk_tree_view_new_with_model(GTK_TREE_MODEL(choose_store
));
621 gtk_tree_view_set_rules_hint(GTK_TREE_VIEW(choose_view
), TRUE
);
622 /* Suppress built-in typeahead find, we do our own search support. */
623 gtk_tree_view_set_enable_search(GTK_TREE_VIEW(choose_view
), FALSE
);
625 /* Create cell renderers and columns */
626 /* TODO use a table */
628 GtkCellRenderer
*r
= gtk_cell_renderer_toggle_new();
629 GtkTreeViewColumn
*c
= gtk_tree_view_column_new_with_attributes
632 "active", STATE_COLUMN
,
633 "visible", ISFILE_COLUMN
,
635 gtk_tree_view_column_set_resizable(c
, TRUE
);
636 gtk_tree_view_column_set_reorderable(c
, TRUE
);
637 gtk_tree_view_append_column(GTK_TREE_VIEW(choose_view
), c
);
638 g_signal_connect(r
, "toggled",
639 G_CALLBACK(choose_state_toggled
), 0);
642 GtkCellRenderer
*r
= gtk_cell_renderer_text_new();
643 GtkTreeViewColumn
*c
= gtk_tree_view_column_new_with_attributes
646 "text", LENGTH_COLUMN
,
648 gtk_tree_view_column_set_resizable(c
, TRUE
);
649 gtk_tree_view_column_set_reorderable(c
, TRUE
);
650 g_object_set(r
, "xalign", (gfloat
)1.0, (char *)0);
651 gtk_tree_view_append_column(GTK_TREE_VIEW(choose_view
), c
);
654 GtkCellRenderer
*r
= gtk_cell_renderer_text_new();
655 GtkTreeViewColumn
*c
= gtk_tree_view_column_new_with_attributes
659 "background", BG_COLUMN
,
660 "foreground", FG_COLUMN
,
662 gtk_tree_view_column_set_resizable(c
, TRUE
);
663 gtk_tree_view_column_set_reorderable(c
, TRUE
);
664 g_object_set(c
, "expand", TRUE
, (char *)0);
665 gtk_tree_view_append_column(GTK_TREE_VIEW(choose_view
), c
);
666 gtk_tree_view_set_expander_column(GTK_TREE_VIEW(choose_view
), c
);
669 /* The selection should support multiple things being selected */
670 choose_selection
= gtk_tree_view_get_selection(GTK_TREE_VIEW(choose_view
));
671 gtk_tree_selection_set_mode(choose_selection
, GTK_SELECTION_MULTIPLE
);
673 /* Catch button presses */
674 g_signal_connect(choose_view
, "button-press-event",
675 G_CALLBACK(choose_button_event
), 0);
676 g_signal_connect(choose_view
, "button-release-event",
677 G_CALLBACK(choose_button_event
), 0);
678 /* Catch row expansions so we can fill in placeholders */
679 g_signal_connect(choose_view
, "row-expanded",
680 G_CALLBACK(choose_row_expanded
), 0);
682 event_register("queue-list-changed", choose_set_state
, 0);
683 event_register("playing-track-changed", choose_set_state
, 0);
684 event_register("search-results-changed", choose_set_state
, 0);
685 event_register("lookups-completed", choose_set_state
, 0);
686 event_register("choose-more-tracks", choose_menu_moretracks
, 0);
688 /* After a rescan we update the choose tree. We get a rescan-complete
689 * automatically at startup and upon connection too. */
690 event_register("rescan-complete", choose_refill
, 0);
692 /* Make the widget scrollable */
693 GtkWidget
*scrolled
= scroll_widget(choose_view
);
695 /* Pack vertically with the search widget */
696 GtkWidget
*vbox
= gtk_vbox_new(FALSE
/*homogenous*/, 1/*spacing*/);
697 gtk_box_pack_start(GTK_BOX(vbox
), scrolled
,
698 TRUE
/*expand*/, TRUE
/*fill*/, 0/*padding*/);
699 gtk_box_pack_end(GTK_BOX(vbox
), choose_search_widget(),
700 FALSE
/*expand*/, FALSE
/*fill*/, 0/*padding*/);
702 g_object_set_data(G_OBJECT(vbox
), "type", (void *)&choose_tabtype
);
704 /* Redirect keyboard activity to the search widget */
705 g_signal_connect(choose_view
, "key-press-event",
706 G_CALLBACK(choose_key_event
), choose_search_entry
);
707 g_signal_connect(choose_view
, "key-release-event",
708 G_CALLBACK(choose_key_event
), choose_search_entry
);
710 /* Enable dragging of tracks out */
711 gtk_drag_source_set(choose_view
,
714 sizeof choose_targets
/ sizeof *choose_targets
,
716 g_signal_connect(choose_view
, "drag-data-get",
717 G_CALLBACK(choose_drag_data_get
), NULL
);
718 make_treeview_multidrag(choose_view
,
719 choose_multidrag_predicate
);