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 3 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,
  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.
  14  *
  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/>.
  17  */
  18 /** @file disobedience/choose-menu.c
  19  * @brief Popup menu for choose screen
  20  */
  21 #include "disobedience.h"
  22 #include "popup.h"
  23 #include "choose.h"
  24
  25 /** @brief Popup menu */
  26 static GtkWidget *choose_menu;
  27
  28 /** @brief Path to directory pending a "select children" operation */
  29 static GtkTreePath *choose_eventually_select_children;
  30
  31 /** @brief Should edit->select all be sensitive?  No, for the choose tab. */
  32 static int choose_selectall_sensitive(void attribute((unused)) *extra) {
  33   return FALSE;
  34 }
  35
  36 /** @brief Activate edit->select all (which should do nothing) */
  37 static void choose_selectall_activate(GtkMenuItem attribute((unused)) *item,
  38                                       gpointer attribute((unused)) userdata) {
  39 }
  40
  41 /** @brief Should 'select none' be sensitive
  42  *
  43  * Yes if anything is selected.
  44  */
  45 static int choose_selectnone_sensitive(void attribute((unused)) *extra) {
  46   return gtk_tree_selection_count_selected_rows(choose_selection) > 0;
  47 }
  48
  49 /** @brief Activate select none */
  50 static void choose_selectnone_activate(GtkMenuItem attribute((unused)) *item,
  51                                        gpointer attribute((unused)) userdata) {
  52   gtk_tree_selection_unselect_all(choose_selection);
  53 }
  54
  55 static void choose_play_sensitive_callback(GtkTreeModel attribute((unused)) *model,
  56                                            GtkTreePath attribute((unused)) *path,
  57                                            GtkTreeIter *iter,
  58                                            gpointer data) {
  59   int *filesp = data;
  60
  61   if(*filesp == -1)
  62     return;
  63   if(choose_is_dir(iter))
  64     *filesp = -1;
  65   else if(choose_is_file(iter))
  66     ++*filesp;
  67 }
  68
  69 /** @brief Should 'play' be sensitive?
  70  *
  71  * Yes if tracks are selected and no directories are */
  72 static int choose_play_sensitive(void attribute((unused)) *extra) {
  73   int files = 0;
  74
  75   gtk_tree_selection_selected_foreach(choose_selection,
  76                                       choose_play_sensitive_callback,
  77                                       &files);
  78   return files > 0;
  79 }
  80
  81 static void choose_gather_selected_files_callback(GtkTreeModel attribute((unused)) *model,
  82                                                   GtkTreePath attribute((unused)) *path,
  83                                                   GtkTreeIter *iter,
  84                                                   gpointer data) {
  85   struct vector *v = data;
  86
  87   if(choose_is_file(iter))
  88     vector_append(v, choose_get_track(iter));
  89 }
  90
  91 static void choose_gather_selected_dirs_callback(GtkTreeModel attribute((unused)) *model,
  92                                                  GtkTreePath attribute((unused)) *path,
  93                                                  GtkTreeIter *iter,
  94                                                  gpointer data) {
  95   struct vector *v = data;
  96
  97   if(choose_is_dir(iter))
  98     vector_append(v, choose_get_track(iter));
  99 }
 100
 101
 102 static void choose_play_activate(GtkMenuItem attribute((unused)) *item,
 103                                  gpointer attribute((unused)) userdata) {
 104   struct vector v[1];
 105   vector_init(v);
 106   gtk_tree_selection_selected_foreach(choose_selection,
 107                                       choose_gather_selected_files_callback,
 108                                       v);
 109   for(int n = 0; n < v->nvec; ++n)
 110     disorder_eclient_play(client, v->vec[n], choose_play_completed, 0);
 111 }
 112
 113 static int choose_properties_sensitive(void *extra) {
 114   return choose_play_sensitive(extra);
 115 }
 116
 117 static void choose_properties_activate(GtkMenuItem attribute((unused)) *item,
 118                                        gpointer attribute((unused)) userdata) {
 119   struct vector v[1];
 120   vector_init(v);
 121   gtk_tree_selection_selected_foreach(choose_selection,
 122                                       choose_gather_selected_files_callback,
 123                                       v);
 124   properties(v->nvec, (const char **)v->vec, toplevel);
 125 }
 126
 127 /** @brief Set sensitivity for select children
 128  *
 129  * Sensitive if we've selected exactly one directory.
 130  */
 131 static int choose_selectchildren_sensitive(void attribute((unused)) *extra) {
 132   struct vector v[1];
 133   /* Only one thing should be selected */
 134   if(gtk_tree_selection_count_selected_rows(choose_selection) != 1)
 135     return FALSE;
 136   /* The selected thing should be a directory */
 137   vector_init(v);
 138   gtk_tree_selection_selected_foreach(choose_selection,
 139                                       choose_gather_selected_dirs_callback,
 140                                       v);
 141   return v->nvec == 1;
 142 }
 143
 144 /** @brief Actually select the children of path
 145  *
 146  * We deselect everything else, too.
 147  */
 148 static void choose_select_children(GtkTreePath *path) {
 149   GtkTreeIter iter[1], child[1];
 150
 151   if(gtk_tree_model_get_iter(GTK_TREE_MODEL(choose_store), iter, path)) {
 152     gtk_tree_selection_unselect_all(choose_selection);
 153     for(int n = 0;
 154         gtk_tree_model_iter_nth_child(GTK_TREE_MODEL(choose_store), child,
 155                                       iter, n);
 156         ++n) {
 157       if(choose_is_file(child))
 158         gtk_tree_selection_select_iter(choose_selection, child);
 159     }
 160   }
 161 }
 162
 163 /** @brief Called to expand the children of path/iter */
 164 static void choose_selectchildren_callback(GtkTreeModel attribute((unused)) *model,
 165                                            GtkTreePath *path,
 166                                            GtkTreeIter attribute((unused)) *iter,
 167                                            gpointer attribute((unused)) data) {
 168   if(gtk_tree_view_row_expanded(GTK_TREE_VIEW(choose_view), path)) {
 169     /* Directory is already expanded */
 170     choose_select_children(path);
 171   } else {
 172     /* Directory is not expanded, so expand it */
 173     gtk_tree_view_expand_row(GTK_TREE_VIEW(choose_view), path, FALSE/*!expand_all*/);
 174     /* Select its children when it's done */
 175     if(choose_eventually_select_children)
 176       gtk_tree_path_free(choose_eventually_select_children);
 177     choose_eventually_select_children = gtk_tree_path_copy(path);
 178   }
 179 }
 180
 181 /** @brief Called when all pending track fetches are finished
 182  *
 183  * If there's a pending select-children operation, it can now be actioned
 184  * (or might have gone stale).
 185  */
 186 void choose_menu_moretracks(const char attribute((unused)) *event,
 187                             void attribute((unused)) *eventdata,
 188                             void attribute((unused)) *callbackdata) {
 189   if(choose_eventually_select_children) {
 190     choose_select_children(choose_eventually_select_children);
 191     gtk_tree_path_free(choose_eventually_select_children);
 192     choose_eventually_select_children = 0;
 193   }
 194 }
 195
 196 /** @brief Select all children
 197  *
 198  * Easy enough if the directory is already expanded, we can just select its
 199  * children.  However if it is not then we must expand it and _when this has
 200  * completed_ select its children.
 201  *
 202  * The way this is implented could cope with multiple directories but
 203  * choose_selectchildren_sensitive() should stop this.
 204  */
 205 static void choose_selectchildren_activate
 206     (GtkMenuItem attribute((unused)) *item,
 207      gpointer attribute((unused)) userdata) {
 208   gtk_tree_selection_selected_foreach(choose_selection,
 209                                       choose_selectchildren_callback,
 210                                       0);
 211 }
 212
 213 /** @brief Pop-up menu for choose */
 214 static struct menuitem choose_menuitems[] = {
 215   {
 216     "Play track",
 217     choose_play_activate,
 218     choose_play_sensitive,
 219     0,
 220     0
 221   },
 222   {
 223     "Track properties",
 224     choose_properties_activate,
 225     choose_properties_sensitive,
 226     0,
 227     0
 228   },
 229   {
 230     "Select children",
 231     choose_selectchildren_activate,
 232     choose_selectchildren_sensitive,
 233     0,
 234     0
 235   },
 236   {
 237     "Deselect all tracks",
 238     choose_selectnone_activate,
 239     choose_selectnone_sensitive,
 240     0,
 241     0
 242   },
 243 };
 244
 245 const struct tabtype choose_tabtype = {
 246   choose_properties_sensitive,
 247   choose_selectall_sensitive,
 248   choose_selectnone_sensitive,
 249   choose_properties_activate,
 250   choose_selectall_activate,
 251   choose_selectnone_activate,
 252   0,
 253   0
 254 };
 255
 256 /** @brief Called when a mouse button is pressed or released */
 257 gboolean choose_button_event(GtkWidget attribute((unused)) *widget,
 258                              GdkEventButton *event,
 259                              gpointer attribute((unused)) user_data) {
 260   if(event->type == GDK_BUTTON_RELEASE && event->button == 2) {
 261     /* Middle click release - play track */
 262     ensure_selected(GTK_TREE_VIEW(choose_view), event);
 263     choose_play_activate(NULL, NULL);
 264   } else if(event->type == GDK_BUTTON_PRESS && event->button == 3) {
 265     /* Right click press - pop up the menu */
 266     ensure_selected(GTK_TREE_VIEW(choose_view), event);
 267     popup(&choose_menu, event,
 268           choose_menuitems, sizeof choose_menuitems / sizeof *choose_menuitems,
 269           0);
 270     return TRUE;
 271   }
 272   return FALSE;
 273 }
 274
 275 /*
 276 Local Variables:
 277 c-basic-offset:2
 278 comment-column:40
 279 fill-column:79
 280 indent-tabs-mode:nil
 281 End:
 282 */