chiark - git - mdw - disorder/blob - disobedience/choose-menu.c

   1 /*
   2  * This file is part of DisOrder
   3  * Copyright (C) 2008 Richard Kettlewell
   4  *
   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.
   9  *
  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.
  14  *
  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
  18  * USA
  19  */
  20 #include "disobedience.h"
  21 #include "popup.h"
  22 #include "choose.h"
  23
  24 VECTOR_TYPE(cdvector, struct choosedata *, xrealloc);
  25
  26 /** @brief Popup menu */
  27 static GtkWidget *choose_menu;
  28
  29 /** @brief Callback for choose_get_selected() */
  30 static void choose_gather_selected_callback(GtkTreeModel attribute((unused)) *model,
  31                                             GtkTreePath attribute((unused)) *path,
  32                                             GtkTreeIter *iter,
  33                                             gpointer data) {
  34   struct cdvector *v = data;
  35   struct choosedata *cd = choose_iter_to_data(iter);
  36
  37   if(cd)
  38     cdvector_append(v, cd);
  39 }
  40
  41 /** @brief Get a list of all selected tracks and directories */
  42 static struct choosedata **choose_get_selected(int *nselected) {
  43   struct cdvector v[1];
  44
  45   cdvector_init(v);
  46   gtk_tree_selection_selected_foreach(choose_selection,
  47                                       choose_gather_selected_callback,
  48                                       v);
  49   cdvector_terminate(v);
  50   if(nselected)
  51     *nselected = v->nvec;
  52   return v->vec;
  53 }
  54
  55 /** @brief Recursion step for choose_get_visible()
  56  * @param parent A visible node, or NULL for the root
  57  * @param cdv Visible nodes accumulated here
  58  */
  59 static void choose_visible_recurse(GtkTreeIter *parent,
  60                                    void (*callback)(GtkTreeIter *it,
  61                                                     struct choosedata *cd,
  62                                                     void *userdata),
  63                                    void *userdata) {
  64   struct choosedata *cd;
  65   int expanded;
  66   if(parent) {
  67     cd = choose_iter_to_data(parent);
  68     callback(parent, cd, userdata);
  69     if(cd->type != CHOOSE_DIRECTORY)
  70       /* Only directories can be expanded so we can avoid the more
  71        * expensive test below */
  72       return;
  73     GtkTreePath *parent_path
  74       = gtk_tree_model_get_path(GTK_TREE_MODEL(choose_store),
  75                                 parent);
  76     expanded = gtk_tree_view_row_expanded(GTK_TREE_VIEW(choose_view),
  77                                           parent_path);
  78     gtk_tree_path_free(parent_path);
  79   } else
  80     expanded = 1;
  81   /* See if parent is expanded */
  82   if(expanded) {
  83     /* Parent is expanded, visit all its children */
  84     GtkTreeIter it[1];
  85     gboolean itv = gtk_tree_model_iter_children(GTK_TREE_MODEL(choose_store),
  86                                                 it,
  87                                                 parent);
  88     while(itv) {
  89       choose_visible_recurse(it, callback, userdata);
  90       itv = gtk_tree_model_iter_next(GTK_TREE_MODEL(choose_store), it);
  91     }
  92   }
  93 }
  94
  95 static void choose_visible_visit(void (*callback)(GtkTreeIter *it,
  96                                                   struct choosedata *cd,
  97                                                   void *userdata),
  98                                  void *userdata) {
  99   choose_visible_recurse(NULL, callback, userdata);
 100 }
 101
 102 static void count_choosedatas(struct choosedata **cds,
 103                               int counts[2]) {
 104   struct choosedata *cd;
 105   counts[CHOOSE_FILE] = counts[CHOOSE_DIRECTORY] = 0;
 106   while((cd = *cds++))
 107     ++counts[cd->type];
 108 }
 109
 110
 111 static void choose_selectall_sensitive_callback
 112     (GtkTreeIter attribute((unused)) *it,
 113      struct choosedata *cd,
 114      void *userdata) {
 115   if(cd->type == CHOOSE_FILE)
 116     ++*(int *)userdata;
 117 }
 118
 119 static int choose_selectall_sensitive(void attribute((unused)) *extra) {
 120   int files = 0;
 121   choose_visible_visit(choose_selectall_sensitive_callback, &files);
 122   return files > 0;
 123 }
 124
 125 static void choose_selectall_activate_callback
 126     (GtkTreeIter *it,
 127      struct choosedata *cd,
 128      void attribute((unused)) *userdata) {
 129   if(cd->type == CHOOSE_FILE)
 130     gtk_tree_selection_select_iter(choose_selection, it);
 131   else
 132     gtk_tree_selection_unselect_iter(choose_selection, it);
 133 }
 134
 135 static void choose_selectall_activate(GtkMenuItem attribute((unused)) *item,
 136                                       gpointer attribute((unused)) userdata) {
 137   choose_visible_visit(choose_selectall_activate_callback, 0);
 138 }
 139
 140 static int choose_selectnone_sensitive(void attribute((unused)) *extra) {
 141   return gtk_tree_selection_count_selected_rows(choose_selection) > 0;
 142 }
 143
 144 static void choose_selectnone_activate(GtkMenuItem attribute((unused)) *item,
 145                                        gpointer attribute((unused)) userdata) {
 146   gtk_tree_selection_unselect_all(choose_selection);
 147 }
 148
 149 static int choose_play_sensitive(void attribute((unused)) *extra) {
 150   int counts[2];
 151   count_choosedatas(choose_get_selected(NULL), counts);
 152   return !counts[CHOOSE_DIRECTORY] && counts[CHOOSE_FILE];
 153 }
 154
 155 static void choose_play_completed(void attribute((unused)) *v,
 156                                   const char *error) {
 157   if(error)
 158     popup_protocol_error(0, error);
 159 }
 160
 161 static void choose_play_activate(GtkMenuItem attribute((unused)) *item,
 162                                  gpointer attribute((unused)) userdata) {
 163   struct choosedata *cd, **cdp = choose_get_selected(NULL);
 164   while((cd = *cdp++)) {
 165     if(cd->type == CHOOSE_FILE)
 166       disorder_eclient_play(client, xstrdup(cd->track),
 167                             choose_play_completed, 0);
 168   }
 169 }
 170
 171 static int choose_properties_sensitive(void *extra) {
 172   return choose_play_sensitive(extra);
 173 }
 174
 175 static void choose_properties_activate(GtkMenuItem attribute((unused)) *item,
 176                                        gpointer attribute((unused)) userdata) {
 177   struct choosedata *cd, **cdp = choose_get_selected(NULL);
 178   struct vector v[1];
 179   vector_init(v);
 180   while((cd = *cdp++))
 181     vector_append(v, xstrdup(cd->track));
 182   properties(v->nvec, (const char **)v->vec);
 183 }
 184
 185 /** @brief Pop-up menu for choose */
 186 static struct menuitem choose_menuitems[] = {
 187   {
 188     "Play track",
 189     choose_play_activate,
 190     choose_play_sensitive,
 191     0,
 192     0
 193   },
 194   {
 195     "Track properties",
 196     choose_properties_activate,
 197     choose_properties_sensitive,
 198     0,
 199     0
 200   },
 201   {
 202     "Select all tracks",
 203     choose_selectall_activate,
 204     choose_selectall_sensitive,
 205     0,
 206     0
 207   },
 208   {
 209     "Deselect all tracks",
 210     choose_selectnone_activate,
 211     choose_selectnone_sensitive,
 212     0,
 213     0
 214   },
 215 };
 216
 217 const struct tabtype choose_tabtype = {
 218   choose_properties_sensitive,
 219   choose_selectall_sensitive,
 220   choose_selectnone_sensitive,
 221   choose_properties_activate,
 222   choose_selectall_activate,
 223   choose_selectnone_activate,
 224   0,
 225   0
 226 };
 227
 228 /** @brief Called when a mouse button is pressed or released */
 229 gboolean choose_button_event(GtkWidget attribute((unused)) *widget,
 230                              GdkEventButton *event,
 231                              gpointer attribute((unused)) user_data) {
 232   if(event->type == GDK_BUTTON_RELEASE && event->button == 2) {
 233     /* Middle click release - play track */
 234     ensure_selected(GTK_TREE_VIEW(choose_view), event);
 235     choose_play_activate(NULL, NULL);
 236   } else if(event->type == GDK_BUTTON_PRESS && event->button == 3) {
 237     /* Right click press - pop up the menu */
 238     ensure_selected(GTK_TREE_VIEW(choose_view), event);
 239     popup(&choose_menu, event,
 240           choose_menuitems, sizeof choose_menuitems / sizeof *choose_menuitems,
 241           0);
 242     return TRUE;
 243   }
 244   return FALSE;
 245 }
 246
 247 /*
 248 Local Variables:
 249 c-basic-offset:2
 250 comment-column:40
 251 fill-column:79
 252 indent-tabs-mode:nil
 253 End:
 254 */