Universal catchalls.

addons/native_dialog/android_dialog.c

@@ -92,10 +92,15 @@ bool _al_show_native_file_dialog(ALLEGRO_DISPLAY *display, ALLEGRO_NATIVE_DIALOG
     ALLEGRO_DEBUG("waiting for the file chooser");
     ALLEGRO_USTR *mime_patterns = al_ustr_new("");
     bool first = true;
+    bool any_catchalls = false;
     for (size_t i = 0; i < _al_vector_size(&fd->fc_patterns); i++) {
        _AL_PATTERNS_AND_DESC *patterns_and_desc = _al_vector_ref(&fd->fc_patterns, (int)i);
        for (size_t j = 0; j < _al_vector_size(&patterns_and_desc->patterns_vec); j++) {
            _AL_PATTERN *pattern = _al_vector_ref(&patterns_and_desc->patterns_vec, (int)j);
+           if (pattern->is_catchall) {
+               any_catchalls = true;
+               break;
+           }
            if (pattern->is_mime)
            {
                if (!first)
@@ -105,6 +110,8 @@ bool _al_show_native_file_dialog(ALLEGRO_DISPLAY *display, ALLEGRO_NATIVE_DIALOG
            }
        }
     }
+    if (any_catchalls)
+       al_ustr_truncate(mime_patterns, 0);
     bool ret = open_file_chooser(fd->flags, al_cstr(mime_patterns), initial_path, &fd->fc_paths, &fd->fc_path_count);
     al_ustr_free(mime_patterns);
     ALLEGRO_DEBUG("done waiting for the file chooser");

addons/native_dialog/osx_dialog.m

@@ -24,12 +24,14 @@ void _al_shutdown_native_dialog_addon(void)
 {
    NSMutableArray *filter_array = [[NSMutableArray alloc] init];
 
+   bool any_catchalls = false;
    for (size_t i = 0; i < _al_vector_size(patterns); i++) {
       _AL_PATTERNS_AND_DESC *patterns_and_desc = _al_vector_ref(patterns, (int)i);
       for (size_t j = 0; j < _al_vector_size(&patterns_and_desc->patterns_vec); j++) {
          _AL_PATTERN *pattern = _al_vector_ref(&patterns_and_desc->patterns_vec, (int)j);
          if (pattern->is_catchall) {
-            continue;
+            any_catchalls = true;
+            break;
          }
          char *cstr = al_cstr_dup(al_ref_info(&pattern->info));
          NSString *filter_text = [NSString stringWithUTF8String: cstr];
@@ -61,6 +63,10 @@ void _al_shutdown_native_dialog_addon(void)
       }
    }
 
+   if (any_catchalls) {
+      filter_array = [[NSMutableArray alloc] init];
+   }
+
    return filter_array;
 }
 

addons/native_dialog/win_dialog.c

@@ -201,7 +201,10 @@ static ALLEGRO_USTR *create_filter_string(const _AL_VECTOR *patterns)
                al_ustr_append_chr(filter, ';');
             }
             first = false;
-            al_ustr_append(filter, al_ref_info(&pattern->info));
+            if (pattern->is_catchall)
+               al_ustr_append_cstr(filter, "*.*");
+            else
+               al_ustr_append(filter, al_ref_info(&pattern->info));
          }
       }
       al_ustr_append_chr(filter, '\0');

examples/ex_native_filechooser.c

@@ -103,7 +103,7 @@ static AsyncDialog *spawn_async_file_dialog(ALLEGRO_DISPLAY *display,
    int flags = save ? ALLEGRO_FILECHOOSER_SAVE : ALLEGRO_FILECHOOSER_MULTIPLE;
    const char* title = save ? "Save (no files will be changed)" : "Choose files";
    data->file_dialog = al_create_native_file_dialog(
-      initial_path, title, NULL,
+      initial_path, title, "image/jpeg;*",
       flags);
    al_init_user_event_source(&data->event_source);
    data->display = display;
@@ -200,13 +200,13 @@ int main(int argc, char **argv)
    al_install_mouse();
    touch = al_install_touch_input();
    al_install_keyboard();
-    
+
    if (touch) {
       al_set_mouse_emulation_mode(ALLEGRO_MOUSE_EMULATION_5_0_x);
    }
 
    message("Creating window...");
-    
+
 #ifdef ALLEGRO_IPHONE
    al_set_new_display_flags(ALLEGRO_FULLSCREEN_WINDOW);
 #endif
@@ -250,7 +250,7 @@ int main(int argc, char **argv)
 
    while (1) {
       float h = al_get_display_height(display);
-      
+
       ALLEGRO_EVENT event;
       al_wait_for_event(queue, &event);
 
@@ -264,7 +264,7 @@ int main(int argc, char **argv)
                break;
          }
       }
-       
+
       /* When a mouse button is pressed, and no native dialog is
        * shown already, we show a new one.
        */