gtk2/tests/testtreelistmodel.c
Matthias Clasen 9e0c471b03 entry, spin button: Drop redundant API
Avoid duplicating GtkEditable APIs. Port existing users.
2019-02-28 16:34:00 -05:00

382 lines
11 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 *store = pending->data;
pending = g_slist_remove (pending, store);
start_enumerate (store);
}
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 int
compare_files (gconstpointer first,
gconstpointer second,
gpointer unused)
{
GFile *first_file, *second_file;
char *first_path, *second_path;
int result;
#if 0
GFileType first_type, second_type;
/* This is a bit slow, because each g_file_query_file_type() does a stat() */
first_type = g_file_query_file_type (G_FILE (first), G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS, NULL);
second_type = g_file_query_file_type (G_FILE (second), G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS, NULL);
if (first_type == G_FILE_TYPE_DIRECTORY && second_type != G_FILE_TYPE_DIRECTORY)
return -1;
if (first_type != G_FILE_TYPE_DIRECTORY && second_type == G_FILE_TYPE_DIRECTORY)
return 1;
#endif
first_file = g_object_get_data (G_OBJECT (first), "file");
second_file = g_object_get_data (G_OBJECT (second), "file");
first_path = g_file_get_path (first_file);
second_path = g_file_get_path (second_file);
result = g_ascii_strcasecmp (first_path, second_path);
g_free (first_path);
g_free (second_path);
return result;
}
static GListModel *
create_list_model_for_directory (gpointer file)
{
GtkSortListModel *sort;
GListStore *store;
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;
sort = gtk_sort_list_model_new (G_LIST_MODEL (store),
compare_files,
NULL, NULL);
g_object_unref (store);
return G_LIST_MODEL (sort);
}
static GtkWidget *
create_widget_for_model (gpointer item,
gpointer root)
{
GtkWidget *row, *box, *child;
GFileInfo *info;
GFile *file;
guint depth;
GIcon *icon;
row = gtk_list_box_row_new ();
gtk_widget_set_vexpand (row, TRUE);
box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 4);
gtk_container_add (GTK_CONTAINER (row), box);
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_container_add (GTK_CONTAINER (box), child);
}
if (gtk_tree_list_row_is_expandable (item))
{
GtkWidget *title, *arrow;
child = g_object_new (GTK_TYPE_BOX, "css-name", "expander", NULL);
title = g_object_new (GTK_TYPE_TOGGLE_BUTTON, "css-name", "title", NULL);
gtk_button_set_relief (GTK_BUTTON (title), GTK_RELIEF_NONE);
g_object_bind_property (item, "expanded", title, "active", G_BINDING_BIDIRECTIONAL | G_BINDING_SYNC_CREATE);
g_object_set_data_full (G_OBJECT (title), "make-sure-its-not-unreffed", g_object_ref (item), g_object_unref);
gtk_container_add (GTK_CONTAINER (child), title);
arrow = g_object_new (GTK_TYPE_SPINNER, "css-name", "arrow", NULL);
gtk_container_add (GTK_CONTAINER (title), arrow);
}
else
{
child = gtk_image_new (); /* empty whatever */
}
gtk_container_add (GTK_CONTAINER (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_container_add (GTK_CONTAINER (box), child);
}
file = g_object_get_data (G_OBJECT (info), "file");
child = gtk_label_new (g_file_get_basename (file));
g_object_unref (info);
gtk_container_add (GTK_CONTAINER (box), child);
return row;
}
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 void
update_adjustment (GListModel *model,
guint position,
guint removed,
guint added,
GtkAdjustment *adjustment)
{
gtk_adjustment_set_upper (adjustment, MAX (ROWS, g_list_model_get_n_items (model)));
}
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;
}
int
main (int argc, char *argv[])
{
GtkAdjustment *adjustment;
GtkWidget *win, *hbox, *vbox, *scrollbar, *listbox, *search_entry, *statusbar;
GListModel *dirmodel;
GtkTreeListModel *tree;
GtkFilterListModel *filter;
GtkSliceListModel *slice;
GFile *root;
gtk_init ();
win = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_default_size (GTK_WINDOW (win), 400, 600);
g_signal_connect (win, "destroy", G_CALLBACK (gtk_main_quit), win);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
gtk_container_add (GTK_CONTAINER (win), vbox);
search_entry = gtk_search_entry_new ();
gtk_container_add (GTK_CONTAINER (vbox), search_entry);
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
gtk_search_entry_set_key_capture_widget (GTK_SEARCH_ENTRY (search_entry), hbox);
gtk_container_add (GTK_CONTAINER (vbox), hbox);
listbox = gtk_list_box_new ();
gtk_widget_set_hexpand (listbox, TRUE);
gtk_container_add (GTK_CONTAINER (hbox), listbox);
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);
filter = gtk_filter_list_model_new (G_LIST_MODEL (tree),
match_file,
search_entry,
NULL);
g_signal_connect_swapped (search_entry, "search-changed", G_CALLBACK (gtk_filter_list_model_refilter), filter);
slice = gtk_slice_list_model_new (G_LIST_MODEL (filter), 0, ROWS);
gtk_list_box_bind_model (GTK_LIST_BOX (listbox),
G_LIST_MODEL (slice),
create_widget_for_model,
root, g_object_unref);
adjustment = gtk_adjustment_new (0,
0, MAX (g_list_model_get_n_items (G_LIST_MODEL (tree)), ROWS),
1, ROWS - 1,
ROWS);
g_object_bind_property (adjustment, "value", slice, "offset", 0);
g_signal_connect (filter, "items-changed", G_CALLBACK (update_adjustment), adjustment);
scrollbar = gtk_scrollbar_new (GTK_ORIENTATION_VERTICAL, adjustment);
gtk_container_add (GTK_CONTAINER (hbox), scrollbar);
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_container_add (GTK_CONTAINER (vbox), statusbar);
g_object_unref (tree);
g_object_unref (filter);
g_object_unref (slice);
gtk_widget_show (win);
gtk_main ();
return 0;
}