gtk2/tests/testlistview.c
Benjamin Otte 7389e704dc testlistview: Show the row number
Always show the current row. This is mostly useful for debugging, not
for beauty.
2020-05-30 19:26:45 -04:00

351 lines
10 KiB
C

#include <gtk/gtk.h>
#define ROWS 30
GSList *pending = NULL;
guint active = 0;
static void
got_files (GObject *enumerate,
GAsyncResult *res,
gpointer store);
static gboolean
start_enumerate (GListStore *store)
{
GFileEnumerator *enumerate;
GFile *file = g_object_get_data (G_OBJECT (store), "file");
GError *error = NULL;
enumerate = g_file_enumerate_children (file,
G_FILE_ATTRIBUTE_STANDARD_TYPE
"," G_FILE_ATTRIBUTE_STANDARD_ICON
"," G_FILE_ATTRIBUTE_STANDARD_NAME,
0,
NULL,
&error);
if (enumerate == NULL)
{
if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_TOO_MANY_OPEN_FILES) && active)
{
g_clear_error (&error);
pending = g_slist_prepend (pending, g_object_ref (store));
return TRUE;
}
g_clear_error (&error);
g_object_unref (store);
return FALSE;
}
if (active > 20)
{
g_object_unref (enumerate);
pending = g_slist_prepend (pending, g_object_ref (store));
return TRUE;
}
active++;
g_file_enumerator_next_files_async (enumerate,
g_file_is_native (file) ? 5000 : 100,
G_PRIORITY_DEFAULT_IDLE,
NULL,
got_files,
g_object_ref (store));
g_object_unref (enumerate);
return TRUE;
}
static void
got_files (GObject *enumerate,
GAsyncResult *res,
gpointer store)
{
GList *l, *files;
GFile *file = g_object_get_data (store, "file");
GPtrArray *array;
files = g_file_enumerator_next_files_finish (G_FILE_ENUMERATOR (enumerate), res, NULL);
if (files == NULL)
{
g_object_unref (store);
if (pending)
{
GListStore *next = pending->data;
pending = g_slist_remove (pending, next);
start_enumerate (next);
}
active--;
return;
}
array = g_ptr_array_new ();
g_ptr_array_new_with_free_func (g_object_unref);
for (l = files; l; l = l->next)
{
GFileInfo *info = l->data;
GFile *child;
child = g_file_get_child (file, g_file_info_get_name (info));
g_object_set_data_full (G_OBJECT (info), "file", child, g_object_unref);
g_ptr_array_add (array, info);
}
g_list_free (files);
g_list_store_splice (store, g_list_model_get_n_items (store), 0, array->pdata, array->len);
g_ptr_array_unref (array);
g_file_enumerator_next_files_async (G_FILE_ENUMERATOR (enumerate),
g_file_is_native (file) ? 5000 : 100,
G_PRIORITY_DEFAULT_IDLE,
NULL,
got_files,
store);
}
static char *
get_file_path (GFileInfo *info)
{
GFile *file;
file = g_object_get_data (G_OBJECT (info), "file");
return g_file_get_path (file);
}
static GListModel *
create_list_model_for_directory (gpointer file)
{
GtkSortListModel *sort;
GListStore *store;
GtkSorter *sorter;
if (g_file_query_file_type (file, G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS, NULL) != G_FILE_TYPE_DIRECTORY)
return NULL;
store = g_list_store_new (G_TYPE_FILE_INFO);
g_object_set_data_full (G_OBJECT (store), "file", g_object_ref (file), g_object_unref);
if (!start_enumerate (store))
return NULL;
sorter = gtk_string_sorter_new (gtk_cclosure_expression_new (G_TYPE_STRING, NULL, 0, NULL, (GCallback) get_file_path, NULL, NULL));
sort = gtk_sort_list_model_new (G_LIST_MODEL (store), sorter);
g_object_unref (sorter);
g_object_unref (store);
return G_LIST_MODEL (sort);
}
static void
bind_widget (GtkListItem *list_item,
gpointer unused)
{
GtkWidget *box, *child;
GFileInfo *info;
GFile *file;
guint depth;
GIcon *icon;
gpointer item;
char *s;
item = gtk_list_item_get_item (list_item);
box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 4);
gtk_list_item_set_child (list_item, box);
child = gtk_label_new (NULL);
gtk_label_set_width_chars (GTK_LABEL (child), 5);
gtk_label_set_xalign (GTK_LABEL (child), 1.0);
g_object_bind_property (list_item, "position", child, "label", G_BINDING_SYNC_CREATE);
gtk_box_append (GTK_BOX (box), child);
depth = gtk_tree_list_row_get_depth (item);
if (depth > 0)
{
child = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
gtk_widget_set_size_request (child, 16 * depth, 0);
gtk_box_append (GTK_BOX (box), child);
}
if (gtk_tree_list_row_is_expandable (item))
{
GtkWidget *arrow;
child = g_object_new (GTK_TYPE_TOGGLE_BUTTON, "css-name", "expander-widget", NULL);
gtk_button_set_has_frame (GTK_BUTTON (child), FALSE);
g_object_bind_property (item, "expanded", child, "active", G_BINDING_BIDIRECTIONAL | G_BINDING_SYNC_CREATE);
g_object_set_data_full (G_OBJECT (child), "make-sure-its-not-unreffed", g_object_ref (item), g_object_unref);
arrow = g_object_new (GTK_TYPE_SPINNER, "css-name", "expander", NULL);
g_object_bind_property (item, "expanded", arrow, "spinning", G_BINDING_SYNC_CREATE);
gtk_button_set_child (GTK_BUTTON (child), arrow);
}
else
{
child = gtk_image_new (); /* empty whatever */
}
gtk_box_append (GTK_BOX (box), child);
info = gtk_tree_list_row_get_item (item);
icon = g_file_info_get_icon (info);
if (icon)
{
child = gtk_image_new_from_gicon (icon);
gtk_box_append (GTK_BOX (box), child);
}
file = g_object_get_data (G_OBJECT (info), "file");
s = g_file_get_basename (file);
child = gtk_label_new (s);
g_free (s);
g_object_unref (info);
gtk_box_append (GTK_BOX (box), child);
}
static GListModel *
create_list_model_for_file_info (gpointer file_info,
gpointer unused)
{
GFile *file = g_object_get_data (file_info, "file");
if (file == NULL)
return NULL;
return create_list_model_for_directory (file);
}
static gboolean
update_statusbar (GtkStatusbar *statusbar)
{
GListModel *model = g_object_get_data (G_OBJECT (statusbar), "model");
GString *string = g_string_new (NULL);
guint n;
gboolean result = G_SOURCE_REMOVE;
gtk_statusbar_remove_all (statusbar, 0);
n = g_list_model_get_n_items (model);
g_string_append_printf (string, "%u", n);
if (GTK_IS_FILTER_LIST_MODEL (model))
{
guint n_unfiltered = g_list_model_get_n_items (gtk_filter_list_model_get_model (GTK_FILTER_LIST_MODEL (model)));
if (n != n_unfiltered)
g_string_append_printf (string, "/%u", n_unfiltered);
}
g_string_append (string, " items");
if (pending || active)
{
g_string_append_printf (string, " (%u directories remaining)", active + g_slist_length (pending));
result = G_SOURCE_CONTINUE;
}
gtk_statusbar_push (statusbar, 0, string->str);
g_free (string->str);
return result;
}
static gboolean
match_file (gpointer item, gpointer data)
{
GtkWidget *search_entry = data;
GFileInfo *info = gtk_tree_list_row_get_item (item);
GFile *file = g_object_get_data (G_OBJECT (info), "file");
char *path;
gboolean result;
path = g_file_get_path (file);
result = strstr (path, gtk_editable_get_text (GTK_EDITABLE (search_entry))) != NULL;
g_object_unref (info);
g_free (path);
return result;
}
static void
search_changed_cb (GtkSearchEntry *entry,
GtkFilter *custom_filter)
{
gtk_filter_changed (custom_filter, GTK_FILTER_CHANGE_DIFFERENT);
}
int
main (int argc, char *argv[])
{
GtkWidget *win, *vbox, *sw, *listview, *search_entry, *statusbar;
GListModel *dirmodel;
GtkTreeListModel *tree;
GtkFilterListModel *filter;
GtkFilter *custom_filter;
GFile *root;
GListModel *toplevels;
gtk_init ();
win = gtk_window_new ();
gtk_window_set_default_size (GTK_WINDOW (win), 400, 600);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
gtk_window_set_child (GTK_WINDOW (win), vbox);
search_entry = gtk_search_entry_new ();
gtk_box_append (GTK_BOX (vbox), search_entry);
sw = gtk_scrolled_window_new (NULL, NULL);
gtk_widget_set_vexpand (sw, TRUE);
gtk_search_entry_set_key_capture_widget (GTK_SEARCH_ENTRY (search_entry), sw);
gtk_box_append (GTK_BOX (vbox), sw);
listview = gtk_list_view_new ();
gtk_list_view_set_functions (GTK_LIST_VIEW (listview),
NULL,
bind_widget,
NULL, NULL);
gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), listview);
if (argc > 1)
root = g_file_new_for_commandline_arg (argv[1]);
else
root = g_file_new_for_path (g_get_current_dir ());
dirmodel = create_list_model_for_directory (root);
tree = gtk_tree_list_model_new (FALSE,
dirmodel,
TRUE,
create_list_model_for_file_info,
NULL, NULL);
g_object_unref (dirmodel);
g_object_unref (root);
custom_filter = gtk_custom_filter_new (match_file, search_entry, NULL);
filter = gtk_filter_list_model_new (G_LIST_MODEL (tree), custom_filter);
g_signal_connect (search_entry, "search-changed", G_CALLBACK (search_changed_cb), custom_filter);
g_object_unref (custom_filter);
gtk_list_view_set_model (GTK_LIST_VIEW (listview), G_LIST_MODEL (filter));
statusbar = gtk_statusbar_new ();
gtk_widget_add_tick_callback (statusbar, (GtkTickCallback) update_statusbar, NULL, NULL);
g_object_set_data (G_OBJECT (statusbar), "model", filter);
g_signal_connect_swapped (filter, "items-changed", G_CALLBACK (update_statusbar), statusbar);
update_statusbar (GTK_STATUSBAR (statusbar));
gtk_box_append (GTK_BOX (vbox), statusbar);
g_object_unref (tree);
g_object_unref (filter);
gtk_widget_show (win);
toplevels = gtk_window_get_toplevels ();
while (g_list_model_get_n_items (toplevels))
g_main_context_iteration (NULL, TRUE);
return 0;
}