2 * This file is part of DisOrder
3 * Copyright (C) 2006-2009 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/queue-generic.c
19 * @brief Disobedience queue widgets
21 * This file provides contains code shared between all the queue-like
22 * widgets - the queue, the recent list and the added tracks list.
24 * This code is in the process of being rewritten to use the native list
27 * There are three @ref queuelike objects: @ref ql_queue, @ref
28 * ql_recent and @ref ql_added. Each has an associated queue linked
29 * list and a list store containing the contents.
31 * When new contents turn up we rearrange the list store accordingly.
33 * NB that while in the server the playing track is not in the queue, in
34 * Disobedience, the playing does live in @c ql_queue.q, despite its different
35 * status to everything else found in that list.
38 * - display playing row in a different color?
40 #include "disobedience.h"
42 #include "queue-generic.h"
43 #include "multidrag.h"
44 #include "autoscroll.h"
46 static const GtkTargetEntry queuelike_targets[] = {
48 (char *)"text/x-disorder-queued-tracks", /* drag type */
49 GTK_TARGET_SAME_WIDGET, /* rearrangement within a widget */
53 (char *)"text/x-disorder-playable-tracks", /* drag type */
54 GTK_TARGET_SAME_APP|GTK_TARGET_OTHER_WIDGET, /* copying between widgets */
59 /* Track detail lookup ----------------------------------------------------- */
61 static void queue_lookups_completed(const char attribute((unused)) *event,
62 void attribute((unused)) *eventdata,
64 struct queuelike *ql = callbackdata;
65 ql_update_list_store(ql);
68 /* Column formatting -------------------------------------------------------- */
70 /** @brief Format the 'when' column */
71 const char *column_when(const struct queue_entry *q,
72 const char attribute((unused)) *data) {
79 case playing_isscratch:
80 case playing_unplayed:
85 case playing_no_player:
87 case playing_scratched:
90 case playing_quitting:
98 strftime(when, sizeof when, "%H:%M", localtime_r(&t, &tm));
101 return xstrdup(when);
104 /** @brief Format the 'who' column */
105 const char *column_who(const struct queue_entry *q,
106 const char attribute((unused)) *data) {
108 return q->submitter ? q->submitter : "";
111 /** @brief Format one of the track name columns */
112 const char *column_namepart(const struct queue_entry *q,
114 D(("column_namepart"));
115 return namepart(q->track, "display", data);
118 /** @brief Format the length column */
119 const char *column_length(const struct queue_entry *q,
120 const char attribute((unused)) *data) {
121 D(("column_length"));
124 char *played = 0, *length = 0;
126 /* Work out what to say for the length */
127 l = namepart_length(q->track);
129 byte_xasprintf(&length, "%ld:%02ld", l / 60, l % 60);
131 byte_xasprintf(&length, "?:??");
132 /* For the currently playing track we want to report how much of the track
134 if(q == playing_track) {
135 /* log_state() arranges that we re-get the playing data whenever the
136 * pause/resume state changes */
137 if(last_state & DISORDER_TRACK_PAUSED)
138 l = playing_track->sofar;
143 l = playing_track->sofar + (now - last_playing);
145 byte_xasprintf(&played, "%ld:%02ld/%s", l / 60, l % 60, length);
151 /* List store maintenance -------------------------------------------------- */
153 /** @brief Return the @ref queue_entry corresponding to @p iter
154 * @param model Model that owns @p iter
155 * @param iter Tree iterator
156 * @return Pointer to queue entry
158 struct queue_entry *ql_iter_to_q(GtkTreeModel *model,
160 struct queuelike *ql = g_object_get_data(G_OBJECT(model), "ql");
162 memset(v, 0, sizeof v);
163 gtk_tree_model_get_value(model, iter, ql->ncolumns + QUEUEPOINTER_COLUMN, v);
164 assert(G_VALUE_TYPE(v) == G_TYPE_POINTER);
165 struct queue_entry *const q = g_value_get_pointer(v);
170 /** @brief Return the @ref queue_entry corresponding to @p path
171 * @param model Model to query
172 * @param path Path into tree
173 * @return Pointer to queue entry or NULL
175 struct queue_entry *ql_path_to_q(GtkTreeModel *model,
178 if(!gtk_tree_model_get_iter(model, iter, path))
180 return ql_iter_to_q(model, iter);
183 /** @brief Update one row of a list store
184 * @param q Queue entry
185 * @param iter Iterator referring to row or NULL to work it out
187 void ql_update_row(struct queue_entry *q,
189 const struct queuelike *const ql = q->ql;
191 D(("ql_update_row"));
192 /* If no iter was supplied, work it out */
193 GtkTreeIter my_iter[1];
195 gtk_tree_model_get_iter_first(GTK_TREE_MODEL(ql->store), my_iter);
196 struct queue_entry *qq;
197 for(qq = ql->q; qq && q != qq; qq = qq->next)
198 gtk_tree_model_iter_next(GTK_TREE_MODEL(ql->store), my_iter);
203 /* Update all the columns */
204 for(int col = 0; col < ql->ncolumns; ++col) {
205 const char *const v = ql->columns[col].value(q,
206 ql->columns[col].data);
208 gtk_list_store_set(ql->store, iter,
212 gtk_list_store_set(ql->store, iter,
213 ql->ncolumns + QUEUEPOINTER_COLUMN, q,
215 if(q == playing_track)
216 gtk_list_store_set(ql->store, iter,
217 ql->ncolumns + BACKGROUND_COLUMN, BG_PLAYING,
218 ql->ncolumns + FOREGROUND_COLUMN, FG_PLAYING,
221 gtk_list_store_set(ql->store, iter,
222 ql->ncolumns + BACKGROUND_COLUMN, (char *)0,
223 ql->ncolumns + FOREGROUND_COLUMN, (char *)0,
227 /** @brief Update the list store
228 * @param ql Queuelike to update
230 * Called when new namepart data is available (and initially). Doesn't change
231 * the rows, just updates the cell values.
233 void ql_update_list_store(struct queuelike *ql) {
234 D(("ql_update_list_store"));
236 gtk_tree_model_get_iter_first(GTK_TREE_MODEL(ql->store), iter);
237 for(struct queue_entry *q = ql->q; q; q = q->next) {
238 ql_update_row(q, iter);
239 gtk_tree_model_iter_next(GTK_TREE_MODEL(ql->store), iter);
243 struct newqueue_data {
244 struct queue_entry *old, *new;
247 static void record_queue_map(hash *h,
249 struct queue_entry *old,
250 struct queue_entry *new) {
251 struct newqueue_data *nqd;
253 if(!(nqd = hash_find(h, id))) {
254 static const struct newqueue_data empty[1];
255 hash_add(h, id, empty, HASH_INSERT);
256 nqd = hash_find(h, id);
260 fprintf(stderr, " old: %s\n", id);
266 fprintf(stderr, " new: %s\n", id);
273 static void dump_queue(struct queue_entry *head, struct queue_entry *mark) {
274 for(struct queue_entry *q = head; q; q = q->next) {
276 fprintf(stderr, " !");
277 fprintf(stderr, " %s\n", q->id);
281 static void dump_rows(struct queuelike *ql) {
283 gboolean it = gtk_tree_model_get_iter_first(GTK_TREE_MODEL(ql->store),
286 struct queue_entry *q = ql_iter_to_q(GTK_TREE_MODEL(ql->store), iter);
287 it = gtk_tree_model_iter_next(GTK_TREE_MODEL(ql->store), iter);
288 fprintf(stderr, " %s\n", q->id);
293 /** @brief Reset the list store
294 * @param ql Queuelike to reset
295 * @param newq New queue contents/ordering
297 * Updates the queue to match @p newq
299 void ql_new_queue(struct queuelike *ql,
300 struct queue_entry *newq) {
304 /* Tell every queue entry which queue owns it */
306 fprintf(stderr, "%s: filling in q->ql\n", ql->name);
308 for(struct queue_entry *q = newq; q; q = q->next)
312 fprintf(stderr, "%s: constructing h\n", ql->name);
314 /* Construct map from id to new and old structures */
315 hash *h = hash_new(sizeof(struct newqueue_data));
316 for(struct queue_entry *q = ql->q; q; q = q->next)
317 record_queue_map(h, q->id, q, NULL);
318 for(struct queue_entry *q = newq; q; q = q->next)
319 record_queue_map(h, q->id, NULL, q);
321 /* The easy bit: delete rows not present any more. In the same pass we
322 * update the secret column containing the queue_entry pointer. */
324 fprintf(stderr, "%s: deleting rows...\n", ql->name);
327 gboolean it = gtk_tree_model_get_iter_first(GTK_TREE_MODEL(ql->store),
329 int inserted = 0, deleted = 0, kept = 0;
331 struct queue_entry *q = ql_iter_to_q(GTK_TREE_MODEL(ql->store), iter);
332 const struct newqueue_data *nqd = hash_find(h, q->id);
334 /* Tell this row that it belongs to the new version of the queue */
335 gtk_list_store_set(ql->store, iter,
336 ql->ncolumns + QUEUEPOINTER_COLUMN, nqd->new,
338 it = gtk_tree_model_iter_next(GTK_TREE_MODEL(ql->store), iter);
341 /* Delete this row (and move iter to the next one) */
343 fprintf(stderr, " delete %s\n", q->id);
345 it = gtk_list_store_remove(ql->store, iter);
350 /* Now every row's secret column is right, but we might be missing new rows
351 * and they might be in the wrong order */
353 /* We're going to have to support arbitrary rearrangements, so we might as
354 * well add new elements at the end. */
356 fprintf(stderr, "%s: adding rows...\n", ql->name);
358 struct queue_entry *after = 0;
359 for(struct queue_entry *q = newq; q; q = q->next) {
360 const struct newqueue_data *nqd = hash_find(h, q->id);
363 /* Try to insert at the right sort of place */
364 GtkTreeIter where[1];
365 gboolean wit = gtk_tree_model_get_iter_first(GTK_TREE_MODEL(ql->store),
367 while(wit && ql_iter_to_q(GTK_TREE_MODEL(ql->store), where) != after)
368 wit = gtk_tree_model_iter_next(GTK_TREE_MODEL(ql->store), where);
370 gtk_list_store_insert_after(ql->store, iter, where);
372 gtk_list_store_append(ql->store, iter);
374 gtk_list_store_prepend(ql->store, iter);
375 gtk_list_store_set(ql->store, iter,
376 ql->ncolumns + QUEUEPOINTER_COLUMN, q,
379 fprintf(stderr, " add %s\n", q->id);
386 /* Now exactly the right set of rows are present, and they have the right
387 * queue_entry pointers in their secret column, but they may be in the wrong
390 * The current code is simple but amounts to a bubble-sort - we might easily
391 * called gtk_tree_model_iter_next a couple of thousand times.
394 fprintf(stderr, "%s: rearranging rows\n", ql->name);
395 fprintf(stderr, "%s: target state:\n", ql->name);
397 fprintf(stderr, "%s: current state:\n", ql->name);
400 it = gtk_tree_model_get_iter_first(GTK_TREE_MODEL(ql->store), iter);
401 struct queue_entry *tq = newq; /* t-for-target */
402 int swaps = 0, searches = 0;
405 struct queue_entry *cq = ql_iter_to_q(GTK_TREE_MODEL(ql->store), iter);
408 /* Everything has the right queue pointer (see above) so it's sufficient to
409 * compare pointers to detect mismatches */
412 fprintf(stderr, " pointer mismatch at row %d\n", row);
413 fprintf(stderr, " target id %s\n", tq->id);
414 fprintf(stderr, " actual id %s\n", cq->id);
416 /* Start looking for the target row fromn the next row */
417 GtkTreeIter next[1] = { *iter };
418 gboolean nit = gtk_tree_model_iter_next(GTK_TREE_MODEL(ql->store), next);
420 struct queue_entry *nq = ql_iter_to_q(GTK_TREE_MODEL(ql->store), next);
422 fprintf(stderr, " candidate: %s\n", nq->id);
426 nit = gtk_tree_model_iter_next(GTK_TREE_MODEL(ql->store), next);
429 /* Note that this assertion will fail in the face of duplicate IDs.
430 * q->id really does need to be unique. */
432 gtk_list_store_swap(ql->store, iter, next);
435 fprintf(stderr, "%s: found it. new row state:\n", ql->name);
440 /* ...and onto the next one */
441 it = gtk_tree_model_iter_next(GTK_TREE_MODEL(ql->store), iter);
446 fprintf(stderr, "%6s: %3d kept %3d inserted %3d deleted %3d swaps %4d searches\n", ql->name,
447 kept, inserted, deleted, swaps, searches);
448 fprintf(stderr, "done\n");
451 /* Set the rest of the columns in new rows */
452 ql_update_list_store(ql);
456 /* Drag and drop ------------------------------------------------------------ */
458 /** @brief Identify the drop path
459 * @param w Destination tree view widget
460 * @param model Underlying tree model
461 * @param wx X coordinate
462 * @param wy Y coordinate
463 * @param posp Where to store relative position
464 * @return Target path or NULL
466 * This is used by ql_drag_motion() and ql_drag_data_received() to identify a
467 * drop would or does land. It's important that they use the same code since
468 * otherwise the visual feedback can be inconsistent with the actual effect!
470 * Remember to free the returned path.
472 static GtkTreePath *ql_drop_path(GtkWidget *w,
475 GtkTreeViewDropPosition *posp) {
476 GtkTreePath *path = NULL;
477 GtkTreeViewDropPosition pos;
478 GtkTreeIter iter[1], last[1];
481 gtk_tree_view_convert_widget_to_tree_coords(GTK_TREE_VIEW(w),
483 if(gtk_tree_view_get_dest_row_at_pos(GTK_TREE_VIEW(w),
487 //fprintf(stderr, "gtk_tree_view_get_dest_row_at_pos() -> TRUE\n");
488 // Normalize drop position
490 case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
491 pos = GTK_TREE_VIEW_DROP_BEFORE;
493 case GTK_TREE_VIEW_DROP_INTO_OR_AFTER:
494 pos = GTK_TREE_VIEW_DROP_AFTER;
498 } else if(gtk_tree_model_get_iter_first(model, iter)) {
499 /* If the pointer isn't over any particular row then either it's below
500 * the last row, in which case we want the dropzone to be below that row;
501 * or it's above the first row (in the column headings) in which case we
502 * want the dropzone to be above that row. */
504 /* Find the last row */
507 } while(gtk_tree_model_iter_next(model, iter));
508 /* The drop target is just after it */
509 pos = GTK_TREE_VIEW_DROP_AFTER;
512 /* The drop target will be just before the first row */
513 pos = GTK_TREE_VIEW_DROP_BEFORE;
515 path = gtk_tree_model_get_path(model, iter);
521 /** @brief Called when a drag moves within a candidate destination
522 * @param w Destination widget
523 * @param dc Drag context
524 * @param x Current pointer location
525 * @param y Current pointer location
526 * @param time_ Current time
527 * @param user_data Pointer to queuelike
528 * @return TRUE in a dropzone, otherwise FALSE
530 * This is the handler for the "drag-motion" signal.
532 static gboolean ql_drag_motion(GtkWidget *w,
537 gpointer user_data) {
538 struct queuelike *const ql = user_data;
539 GdkDragAction action = 0;
541 // GTK_DEST_DEFAULT_MOTION vets actions as follows:
542 // 1) if dc->suggested_action is in the gtk_drag_dest_set actions
543 // then dc->suggested_action is taken as the action.
544 // 2) otherwise if dc->actions intersects the gtk_drag_dest_set actions
545 // then the lowest-numbered member of the intersection is chosen.
546 // 3) otherwise no member is chosen and gdk_drag_status() is called
547 // with action=0 to refuse the drop.
548 if(dc->suggested_action) {
549 if(dc->suggested_action & (GDK_ACTION_MOVE|GDK_ACTION_COPY))
550 action = dc->suggested_action;
551 } else if(dc->actions & GDK_ACTION_MOVE)
552 action = GDK_ACTION_MOVE;
553 else if(dc->actions & GDK_ACTION_COPY)
554 action = GDK_ACTION_COPY;
555 /*fprintf(stderr, "suggested %#x actions %#x result %#x\n",
556 dc->suggested_action, dc->actions, action);*/
558 // If the action is acceptable then we see if this widget is acceptable
559 if(gtk_drag_dest_find_target(w, dc, NULL) == GDK_NONE)
563 //fprintf(stderr, "drag action: %u\n", action);
564 gdk_drag_status(dc, action, time_);
566 GtkTreeViewDropPosition pos;
568 // Find the drop target
569 GtkTreePath *path = ql_drop_path(w, GTK_TREE_MODEL(ql->store), x, y, &pos);
570 // Highlight drop target
571 gtk_tree_view_set_drag_dest_row(GTK_TREE_VIEW(w), path, pos);
573 gtk_tree_path_free(path);
575 autoscroll_add(GTK_TREE_VIEW(w));
576 return TRUE; /* We are (always) in a drop zone */
579 /** @brief Called when a drag moves leaves a candidate destination
580 * @param w Destination widget
581 * @param dc Drag context
582 * @param time_ Current time
583 * @param user_data Pointer to queuelike
585 * This is the handler for the "drag-leave" signal.
587 * It turns out that we get a drag-leave event when the data is dropped, too
588 * (See _gtk_drag_dest_handle_event). This seems logically consistent and is
589 * convenient too - for instance it's why autoscroll_remove() gets called at
590 * the end of a drag+drop sequence.
592 static void ql_drag_leave(GtkWidget *w,
593 GdkDragContext attribute((unused)) *dc,
594 guint attribute((unused)) time_,
595 gpointer attribute((unused)) user_data) {
596 //struct queuelike *const ql = user_data;
598 gtk_tree_view_set_drag_dest_row(GTK_TREE_VIEW(w), NULL, 0);
599 autoscroll_remove(GTK_TREE_VIEW(w));
602 /** @brief Callback to add selected tracks to the selection data
604 * Called from ql_drag_data_get().
606 static void ql_drag_data_get_collect(GtkTreeModel *model,
607 GtkTreePath attribute((unused)) *path,
610 struct dynstr *const result = data;
611 struct queue_entry *const q = ql_iter_to_q(model, iter);
613 dynstr_append_string(result, q->id);
614 dynstr_append(result, '\n');
615 dynstr_append_string(result, q->track);
616 dynstr_append(result, '\n');
619 /** @brief Called to extract the dragged data from the source queuelike
620 * @param w Source widget (the tree view)
621 * @param dc Drag context
622 * @param data Where to put the answer
623 * @param info_ Target @c info parameter
624 * @param time_ Time data requested (for some reason not a @c time_t)
625 * @param user_data The queuelike
627 * The list of tracks is converted into a single string, consisting of IDs
628 * and track names. Each is terminated by a newline. Including both ID and
629 * track name means that the receiver can use whichever happens to be more
632 * If there are no IDs for rows in this widget then the ID half is undefined.
634 * This is the handler for the "drag-data-get" signal.
636 static void ql_drag_data_get(GtkWidget attribute((unused)) *w,
637 GdkDragContext attribute((unused)) *dc,
638 GtkSelectionData *data,
639 guint attribute((unused)) info_,
640 guint attribute((unused)) time_,
641 gpointer user_data) {
642 struct queuelike *const ql = user_data;
643 struct dynstr result[1];
646 gtk_tree_selection_selected_foreach(ql->selection,
647 ql_drag_data_get_collect,
649 // TODO must not be able to drag playing track!
650 //fprintf(stderr, "drag-data-get: %.*s\n",
651 // result->nvec, result->vec);
652 /* gtk_selection_data_set_text() insists that data->target is one of a
653 * variety of stringy atoms. TODO: where does this value actually come
655 gtk_selection_data_set(data,
657 8, (guchar *)result->vec, result->nvec);
660 /** @brief Called when drag data is received
661 * @param w Target widget (the tree view)
662 * @param dc Drag context
663 * @param x The drop location
664 * @param y The drop location
665 * @param data The selection data
666 * @param info_ The target type that was chosen
667 * @param time_ Time data received (for some reason not a @c time_t)
668 * @param user_data The queuelike
670 * This is the handler for the "drag-data-received" signal.
672 static void ql_drag_data_received(GtkWidget attribute((unused)) *w,
673 GdkDragContext attribute((unused)) *dc,
676 GtkSelectionData *data,
677 guint attribute((unused)) info_,
678 guint attribute((unused)) time_,
679 gpointer user_data) {
680 struct queuelike *const ql = user_data;
682 struct vector ids[1], tracks[1];
685 //fprintf(stderr, "drag-data-received: %d,%d info_=%u\n", x, y, info_);
686 /* Get the selection string */
687 p = result = (char *)gtk_selection_data_get_text(data);
689 //fprintf(stderr, "gtk_selection_data_get_text() returned NULL\n");
692 //fprintf(stderr, "%s--\n", result);
693 /* Parse it back into IDs and track names */
697 char *nl = strchr(p, '\n');
701 //fprintf(stderr, " %s\n", p);
702 vector_append(parity++ & 1 ? tracks : ids, xstrdup(p));
706 if(ids->nvec != tracks->nvec) {
707 //fprintf(stderr, " inconsistent drag data!\n");
710 vector_terminate(ids);
711 vector_terminate(tracks);
712 /* Figure out which row the drop precedes (if any) */
713 GtkTreeViewDropPosition pos;
714 struct queue_entry *q;
715 GtkTreePath *path = ql_drop_path(w, GTK_TREE_MODEL(ql->store), x, y, &pos);
717 q = ql_path_to_q(GTK_TREE_MODEL(ql->store), path);
719 /* This generally means a drop past the end of the queue. We find the last
720 * element in the queue and ask to move after that. */
721 for(q = ql->q; q && q->next; q = q->next)
725 case GTK_TREE_VIEW_DROP_BEFORE:
726 case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
729 //fprintf(stderr, " ...but we like to drop near %s\n",
730 // q ? q->id : "NULL");
736 /* Guarantee we never drop an empty list */
739 /* Note that q->id can match one of ids[]. This doesn't matter for
740 * moveafter but TODO may matter for playlist support. */
743 /* Rearrangement. Send ID and track data. */
744 ql->drop(ql, tracks->nvec, tracks->vec, ids->vec, q);
747 /* Copying between widgets. IDs mean nothing so don't send them. */
748 ql->drop(ql, tracks->nvec, tracks->vec, NULL, q);
752 gtk_tree_path_free(path);
755 /** @brief Initialize a @ref queuelike */
756 GtkWidget *init_queuelike(struct queuelike *ql) {
757 D(("init_queuelike"));
758 /* Create the list store. We add an extra column to hold a pointer to the
760 GType *types = xcalloc(ql->ncolumns + EXTRA_COLUMNS, sizeof (GType));
761 for(int n = 0; n < ql->ncolumns + EXTRA_COLUMNS; ++n)
762 types[n] = G_TYPE_STRING;
763 types[ql->ncolumns + QUEUEPOINTER_COLUMN] = G_TYPE_POINTER;
764 ql->store = gtk_list_store_newv(ql->ncolumns + EXTRA_COLUMNS, types);
765 g_object_set_data(G_OBJECT(ql->store), "ql", (void *)ql);
767 /* Create the view */
768 ql->view = gtk_tree_view_new_with_model(GTK_TREE_MODEL(ql->store));
769 gtk_tree_view_set_rules_hint(GTK_TREE_VIEW(ql->view), TRUE);
771 /* Create cell renderers and label columns */
772 for(int n = 0; n < ql->ncolumns; ++n) {
773 GtkCellRenderer *r = gtk_cell_renderer_text_new();
774 if(ql->columns[n].flags & COL_ELLIPSIZE)
775 g_object_set(r, "ellipsize", PANGO_ELLIPSIZE_END, (char *)0);
776 if(ql->columns[n].flags & COL_RIGHT)
777 g_object_set(r, "xalign", (gfloat)1.0, (char *)0);
778 GtkTreeViewColumn *c = gtk_tree_view_column_new_with_attributes
779 (ql->columns[n].name,
782 "background", ql->ncolumns + BACKGROUND_COLUMN,
783 "foreground", ql->ncolumns + FOREGROUND_COLUMN,
785 gtk_tree_view_column_set_resizable(c, TRUE);
786 gtk_tree_view_column_set_reorderable(c, TRUE);
787 if(ql->columns[n].flags & COL_EXPAND)
788 g_object_set(c, "expand", TRUE, (char *)0);
789 gtk_tree_view_append_column(GTK_TREE_VIEW(ql->view), c);
792 /* The selection should support multiple things being selected */
793 ql->selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(ql->view));
794 g_object_ref(ql->selection);
795 gtk_tree_selection_set_mode(ql->selection, GTK_SELECTION_MULTIPLE);
797 /* Catch button presses */
798 g_signal_connect(ql->view, "button-press-event",
799 G_CALLBACK(ql_button_release), ql);
803 /* Originally this was:
805 * gtk_tree_view_set_reorderable(GTK_TREE_VIEW(ql->view), TRUE);
807 * However this has a two deficiencies:
809 * 1) Only one row can be dragged at once. It would be nice
810 * to be able to do bulk rearrangements since the server
811 * can cope with that well.
812 * 2) Dragging between windows is not possible. When playlist
813 * support appears, it should be possible to drag tracks
814 * from the choose tag into the playlist.
816 * At the time of writing neither of these problems are fully solved, the
817 * code as it stands is just a stepping stone in that direction.
820 /* This view will act as a drag source */
821 gtk_drag_source_set(ql->view,
824 sizeof queuelike_targets / sizeof *queuelike_targets,
826 /* This view will act as a drag destination */
827 gtk_drag_dest_set(ql->view,
828 GTK_DEST_DEFAULT_HIGHLIGHT|GTK_DEST_DEFAULT_DROP,
830 sizeof queuelike_targets / sizeof *queuelike_targets,
831 GDK_ACTION_MOVE|GDK_ACTION_COPY);
832 g_signal_connect(ql->view, "drag-motion",
833 G_CALLBACK(ql_drag_motion), ql);
834 g_signal_connect(ql->view, "drag-leave",
835 G_CALLBACK(ql_drag_leave), ql);
836 g_signal_connect(ql->view, "drag-data-get",
837 G_CALLBACK(ql_drag_data_get), ql);
838 g_signal_connect(ql->view, "drag-data-received",
839 G_CALLBACK(ql_drag_data_received), ql);
840 make_treeview_multidrag(ql->view, NULL);
841 // TODO playing track should be refused by predicate arg
843 /* For queues that cannot accept a drop we still accept a copy out */
844 gtk_drag_source_set(ql->view,
847 sizeof queuelike_targets / sizeof *queuelike_targets,
849 g_signal_connect(ql->view, "drag-data-get",
850 G_CALLBACK(ql_drag_data_get), ql);
851 make_treeview_multidrag(ql->view, NULL);
859 /* Update display text when lookups complete */
860 event_register("lookups-completed", queue_lookups_completed, ql);
862 GtkWidget *scrolled = scroll_widget(ql->view);
863 g_object_set_data(G_OBJECT(scrolled), "type", (void *)ql_tabtype(ql));
867 /** @brief Destroy a queuelike
868 * @param ql Queuelike to destroy
870 * Returns @p ql to its initial state.
872 void destroy_queuelike(struct queuelike *ql) {
874 g_object_unref(ql->store);
878 gtk_object_destroy(GTK_OBJECT(ql->view));
882 gtk_object_destroy(GTK_OBJECT(ql->menu));
886 g_object_unref(ql->selection);
887 ql->selection = NULL;