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 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * 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, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20 /** @file disobedience/choose.c
21 * @brief Hierarchical track selection and search
23 * We now use an ordinary GtkTreeStore/GtkTreeView.
25 * We have an extra column with per-row data. This isn't referenced from
26 * anywhere the GC can see so explicit memory management is required.
27 * (TODO perhaps we could fix this using a gobject?)
29 * We don't want to pull the entire tree in memory, but we want directories to
30 * show up as having children. Therefore we give directories a placeholder
31 * child and replace their children when they are opened. Placeholders have a
32 * null choosedata pointer.
34 * TODO We do a period sweep which kills contracted nodes, putting back
35 * placeholders, and updating expanded nodes to keep up with server-side
36 * changes. (We could trigger the latter off rescan complete notifications?)
39 * - sweep up contracted nodes
40 * - update when content may have changed (e.g. after a rescan)
43 #include "disobedience.h"
46 /** @brief The current selection tree */
47 GtkTreeStore
*choose_store
;
49 /** @brief The view onto the selection tree */
50 GtkWidget
*choose_view
;
52 /** @brief The selection tree's selection */
53 GtkTreeSelection
*choose_selection
;
55 /** @brief Map choosedata types to names */
56 static const char *const choose_type_map
[] = { "track", "dir" };
58 /** @brief Return the choosedata given an interator */
59 struct choosedata
*choose_iter_to_data(GtkTreeIter
*iter
) {
61 memset(v
, 0, sizeof v
);
62 gtk_tree_model_get_value(GTK_TREE_MODEL(choose_store
), iter
, CHOOSEDATA_COLUMN
, v
);
63 assert(G_VALUE_TYPE(v
) == G_TYPE_POINTER
);
64 struct choosedata
*const cd
= g_value_get_pointer(v
);
69 struct choosedata
*choose_path_to_data(GtkTreePath
*path
) {
71 gboolean itv
= gtk_tree_model_get_iter(GTK_TREE_MODEL(choose_store
),
74 return choose_iter_to_data(it
);
77 /** @brief Remove node @p it and all its children
78 * @param Iterator, updated to point to next
79 * @return True if iterator remains valid
81 static gboolean
choose_remove_node(GtkTreeIter
*it
) {
83 gboolean childv
= gtk_tree_model_iter_children(GTK_TREE_MODEL(choose_store
),
87 childv
= choose_remove_node(child
);
88 struct choosedata
*cd
= choose_iter_to_data(it
);
94 return gtk_tree_store_remove(choose_store
, it
);
97 /** @brief Update length and state fields */
98 static gboolean
choose_set_state_callback(GtkTreeModel
attribute((unused
)) *model
,
99 GtkTreePath
attribute((unused
)) *path
,
101 gpointer
attribute((unused
)) data
) {
102 struct choosedata
*cd
= choose_iter_to_data(it
);
104 return FALSE
; /* Skip placeholders*/
105 if(cd
->type
== CHOOSE_FILE
) {
106 const long l
= namepart_length(cd
->track
);
109 byte_snprintf(length
, sizeof length
, "%ld:%02ld", l
/ 60, l
% 60);
112 gtk_tree_store_set(choose_store
, it
,
113 LENGTH_COLUMN
, length
,
114 STATE_COLUMN
, queued(cd
->track
),
117 return FALSE
; /* continue walking */
120 /** @brief Called when the queue or playing track change */
121 static void choose_set_state(const char attribute((unused
)) *event
,
122 void attribute((unused
)) *eventdata
,
123 void attribute((unused
)) *callbackdata
) {
124 gtk_tree_model_foreach(GTK_TREE_MODEL(choose_store
),
125 choose_set_state_callback
,
129 /** @brief (Re-)populate a node
130 * @param parent_ref Node to populate or NULL to fill root
131 * @param nvec Number of children to add
132 * @param vec Children
133 * @param dirs True if children are directories
135 * Adjusts the set of files (or directories) below @p parent_ref to match those
136 * listed in @p nvec and @p vec.
138 * @parent_ref will be destroyed.
140 static void choose_populate(GtkTreeRowReference
*parent_ref
,
141 int nvec
, char **vec
,
143 /* Compute parent_* */
144 GtkTreeIter pit
[1], *parent_it
;
145 GtkTreePath
*parent_path
;
147 parent_path
= gtk_tree_row_reference_get_path(parent_ref
);
149 gboolean pitv
= gtk_tree_model_get_iter(GTK_TREE_MODEL(choose_store
),
152 /*fprintf(stderr, "choose_populate %s: parent path is [%s]\n",
153 choose_type_map[type],
154 gtk_tree_path_to_string(parent_path));*/
158 /*fprintf(stderr, "choose_populate %s: populating the root\n",
159 choose_type_map[type]);*/
161 /* Remove unwanted nodes and find out which we must add */
162 //fprintf(stderr, " trimming unwanted %s nodes\n", choose_type_map[type]);
163 char *found
= xmalloc(nvec
);
165 gboolean itv
= gtk_tree_model_iter_children(GTK_TREE_MODEL(choose_store
),
169 struct choosedata
*cd
= choose_iter_to_data(it
);
173 /* Always kill placeholders */
174 //fprintf(stderr, " kill a placeholder\n");
176 } else if(cd
->type
== type
) {
177 /* This is the type we care about */
178 //fprintf(stderr, " %s is a %s\n", cd->track, choose_type_map[cd->type]);
180 for(n
= 0; n
< nvec
&& strcmp(vec
[n
], cd
->track
); ++n
)
183 //fprintf(stderr, " ... and survives\n");
187 //fprintf(stderr, " ... and is to be removed\n");
191 /* Keep wrong-type entries */
192 //fprintf(stderr, " %s is a %s\n", cd->track, choose_type_map[cd->type]);
196 itv
= gtk_tree_model_iter_next(GTK_TREE_MODEL(choose_store
), it
);
198 itv
= choose_remove_node(it
);
200 /* Add nodes we don't have */
202 //fprintf(stderr, " inserting new %s nodes\n", choose_type_map[type]);
203 for(int n
= 0; n
< nvec
; ++n
) {
205 //fprintf(stderr, " %s was not found\n", vec[n]);
206 struct choosedata
*cd
= g_malloc0(sizeof *cd
);
208 cd
->track
= g_strdup(vec
[n
]);
209 cd
->sort
= g_strdup(trackname_transform(choose_type_map
[type
],
212 gtk_tree_store_append(choose_store
, it
, parent_it
);
213 gtk_tree_store_set(choose_store
, it
,
214 NAME_COLUMN
, trackname_transform(choose_type_map
[type
],
217 CHOOSEDATA_COLUMN
, cd
,
218 ISFILE_COLUMN
, type
== CHOOSE_FILE
,
220 /* Update length and state; we expect this to kick off length lookups
221 * rather than necessarily get the right value the first time round. */
222 choose_set_state_callback(0, 0, it
, 0);
224 /* If we inserted a directory, insert a placeholder too, so it appears to
225 * have children; it will be deleted when we expand the directory. */
226 if(type
== CHOOSE_DIRECTORY
) {
227 //fprintf(stderr, " inserting a placeholder\n");
228 GtkTreeIter placeholder
[1];
230 gtk_tree_store_append(choose_store
, placeholder
, it
);
231 gtk_tree_store_set(choose_store
, placeholder
,
232 NAME_COLUMN
, "Waddling...",
233 CHOOSEDATA_COLUMN
, (void *)0,
238 //fprintf(stderr, " %d nodes inserted\n", inserted);
240 /* TODO sort the children */
243 /* If we deleted a placeholder then we must re-expand the row */
244 gtk_tree_view_expand_row(GTK_TREE_VIEW(choose_view
), parent_path
, FALSE
);
245 gtk_tree_row_reference_free(parent_ref
);
246 gtk_tree_path_free(parent_path
);
250 static void choose_dirs_completed(void *v
,
252 int nvec
, char **vec
) {
254 popup_protocol_error(0, error
);
257 choose_populate(v
, nvec
, vec
, CHOOSE_DIRECTORY
);
260 static void choose_files_completed(void *v
,
262 int nvec
, char **vec
) {
264 popup_protocol_error(0, error
);
267 choose_populate(v
, nvec
, vec
, CHOOSE_FILE
);
270 void choose_play_completed(void attribute((unused
)) *v
,
273 popup_protocol_error(0, error
);
276 static void choose_state_toggled
277 (GtkCellRendererToggle
attribute((unused
)) *cell_renderer
,
279 gpointer
attribute((unused
)) user_data
) {
281 /* Identify the track */
283 gtk_tree_model_get_iter_from_string(GTK_TREE_MODEL(choose_store
),
288 struct choosedata
*cd
= choose_iter_to_data(it
);
291 if(cd
->type
!= CHOOSE_FILE
)
293 if(queued(cd
->track
))
295 disorder_eclient_play(client
, xstrdup(cd
->track
),
296 choose_play_completed
, 0);
300 static void choose_row_expanded(GtkTreeView
attribute((unused
)) *treeview
,
303 gpointer
attribute((unused
)) user_data
) {
304 /*fprintf(stderr, "row-expanded path=[%s]\n",
305 gtk_tree_path_to_string(path));*/
306 /* We update a node's contents whenever it is expanded, even if it was
307 * already populated; the effect is that contracting and expanding a node
308 * suffices to update it to the latest state on the server. */
309 struct choosedata
*cd
= choose_iter_to_data(iter
);
310 disorder_eclient_files(client
, choose_files_completed
,
313 gtk_tree_row_reference_new(GTK_TREE_MODEL(choose_store
),
315 disorder_eclient_dirs(client
, choose_dirs_completed
,
318 gtk_tree_row_reference_new(GTK_TREE_MODEL(choose_store
),
320 /* The row references are destroyed in the _completed handlers. */
323 /** @brief Create the choose tab */
324 GtkWidget
*choose_widget(void) {
325 /* Create the tree store. */
326 choose_store
= gtk_tree_store_new(1 + CHOOSEDATA_COLUMN
,
333 /* Create the view */
334 choose_view
= gtk_tree_view_new_with_model(GTK_TREE_MODEL(choose_store
));
335 gtk_tree_view_set_rules_hint(GTK_TREE_VIEW(choose_view
), TRUE
);
337 /* Create cell renderers and columns */
338 /* TODO use a table */
340 GtkCellRenderer
*r
= gtk_cell_renderer_text_new();
341 GtkTreeViewColumn
*c
= gtk_tree_view_column_new_with_attributes
346 gtk_tree_view_column_set_resizable(c
, TRUE
);
347 gtk_tree_view_column_set_reorderable(c
, TRUE
);
348 g_object_set(c
, "expand", TRUE
, (char *)0);
349 gtk_tree_view_append_column(GTK_TREE_VIEW(choose_view
), c
);
352 GtkCellRenderer
*r
= gtk_cell_renderer_text_new();
353 GtkTreeViewColumn
*c
= gtk_tree_view_column_new_with_attributes
356 "text", LENGTH_COLUMN
,
358 gtk_tree_view_column_set_resizable(c
, TRUE
);
359 gtk_tree_view_column_set_reorderable(c
, TRUE
);
360 g_object_set(r
, "xalign", (gfloat
)1.0, (char *)0);
361 gtk_tree_view_append_column(GTK_TREE_VIEW(choose_view
), c
);
364 GtkCellRenderer
*r
= gtk_cell_renderer_toggle_new();
365 GtkTreeViewColumn
*c
= gtk_tree_view_column_new_with_attributes
368 "active", STATE_COLUMN
,
369 "visible", ISFILE_COLUMN
,
371 gtk_tree_view_column_set_resizable(c
, TRUE
);
372 gtk_tree_view_column_set_reorderable(c
, TRUE
);
373 gtk_tree_view_append_column(GTK_TREE_VIEW(choose_view
), c
);
374 g_signal_connect(r
, "toggled",
375 G_CALLBACK(choose_state_toggled
), 0);
378 /* The selection should support multiple things being selected */
379 choose_selection
= gtk_tree_view_get_selection(GTK_TREE_VIEW(choose_view
));
380 gtk_tree_selection_set_mode(choose_selection
, GTK_SELECTION_MULTIPLE
);
382 /* Catch button presses */
383 g_signal_connect(choose_view
, "button-press-event",
384 G_CALLBACK(choose_button_event
), 0);
385 g_signal_connect(choose_view
, "button-release-event",
386 G_CALLBACK(choose_button_event
), 0);
387 /* Catch row expansions so we can fill in placeholders */
388 g_signal_connect(choose_view
, "row-expanded",
389 G_CALLBACK(choose_row_expanded
), 0);
391 event_register("queue-list-changed", choose_set_state
, 0);
392 event_register("playing-track-changed", choose_set_state
, 0);
395 disorder_eclient_files(client
, choose_files_completed
, "", NULL
, NULL
);
396 disorder_eclient_dirs(client
, choose_dirs_completed
, "", NULL
, NULL
);
398 /* Make the widget scrollable */
399 GtkWidget
*scrolled
= scroll_widget(choose_view
);
400 g_object_set_data(G_OBJECT(scrolled
), "type", (void *)&choose_tabtype
);