gtk2/tests/testlistview.c

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#include <gtk/gtk.h>
#define FILE_INFO_TYPE_SELECTION (file_info_selection_get_type ())
G_DECLARE_FINAL_TYPE (FileInfoSelection, file_info_selection, FILE_INFO, SELECTION, GObject)
struct _FileInfoSelection
{
GObject parent_instance;
GListModel *model;
};
struct _FileInfoSelectionClass
{
GObjectClass parent_class;
};
static GType
file_info_selection_get_item_type (GListModel *list)
{
FileInfoSelection *self = FILE_INFO_SELECTION (list);
return g_list_model_get_item_type (self->model);
}
static guint
file_info_selection_get_n_items (GListModel *list)
{
FileInfoSelection *self = FILE_INFO_SELECTION (list);
return g_list_model_get_n_items (self->model);
}
static gpointer
file_info_selection_get_item (GListModel *list,
guint position)
{
FileInfoSelection *self = FILE_INFO_SELECTION (list);
return g_list_model_get_item (self->model, position);
}
static void
file_info_selection_list_model_init (GListModelInterface *iface)
{
iface->get_item_type = file_info_selection_get_item_type;
iface->get_n_items = file_info_selection_get_n_items;
iface->get_item = file_info_selection_get_item;
}
static gboolean
file_info_selection_is_selected (GtkSelectionModel *model,
guint position)
{
FileInfoSelection *self = FILE_INFO_SELECTION (model);
gpointer item;
item = g_list_model_get_item (self->model, position);
if (item == NULL)
return FALSE;
if (GTK_IS_TREE_LIST_ROW (item))
{
GtkTreeListRow *row = item;
item = gtk_tree_list_row_get_item (row);
g_object_unref (row);
}
return g_file_info_get_attribute_boolean (item, "filechooser::selected");
}
static void
file_info_selection_set_selected (FileInfoSelection *self,
guint position,
gboolean selected)
{
gpointer item;
item = g_list_model_get_item (self->model, position);
if (item == NULL)
return;
if (GTK_IS_TREE_LIST_ROW (item))
{
GtkTreeListRow *row = item;
item = gtk_tree_list_row_get_item (row);
g_object_unref (row);
}
g_file_info_set_attribute_boolean (item, "filechooser::selected", selected);
}
static gboolean
file_info_selection_select_item (GtkSelectionModel *model,
guint position,
gboolean exclusive)
{
FileInfoSelection *self = FILE_INFO_SELECTION (model);
if (exclusive)
{
guint i;
for (i = 0; i < g_list_model_get_n_items (self->model); i++)
file_info_selection_set_selected (self, i, i == position);
gtk_selection_model_selection_changed (model, 0, g_list_model_get_n_items (self->model));
}
else
{
file_info_selection_set_selected (self, position, TRUE);
gtk_selection_model_selection_changed (model, position, 1);
}
return TRUE;
}
static gboolean
file_info_selection_unselect_item (GtkSelectionModel *model,
guint position)
{
FileInfoSelection *self = FILE_INFO_SELECTION (model);
file_info_selection_set_selected (self, position, FALSE);
gtk_selection_model_selection_changed (model, position, 1);
return TRUE;
}
static gboolean
file_info_selection_select_range (GtkSelectionModel *model,
guint position,
guint n_items,
gboolean exclusive)
{
FileInfoSelection *self = FILE_INFO_SELECTION (model);
guint i;
if (exclusive)
for (i = 0; i < position; i++)
file_info_selection_set_selected (self, i, FALSE);
for (i = position; i < position + n_items; i++)
file_info_selection_set_selected (self, i, TRUE);
if (exclusive)
for (i = position + n_items; i < g_list_model_get_n_items (self->model); i++)
file_info_selection_set_selected (self, i, FALSE);
if (exclusive)
gtk_selection_model_selection_changed (model, 0, g_list_model_get_n_items (self->model));
else
gtk_selection_model_selection_changed (model, position, n_items);
return TRUE;
}
static gboolean
file_info_selection_unselect_range (GtkSelectionModel *model,
guint position,
guint n_items)
{
FileInfoSelection *self = FILE_INFO_SELECTION (model);
guint i;
for (i = position; i < position + n_items; i++)
file_info_selection_set_selected (self, i, FALSE);
gtk_selection_model_selection_changed (model, position, n_items);
return TRUE;
}
static void
file_info_selection_selection_model_init (GtkSelectionModelInterface *iface)
{
iface->is_selected = file_info_selection_is_selected;
iface->select_item = file_info_selection_select_item;
iface->unselect_item = file_info_selection_unselect_item;
iface->select_range = file_info_selection_select_range;
iface->unselect_range = file_info_selection_unselect_range;
}
G_DEFINE_TYPE_EXTENDED (FileInfoSelection, file_info_selection, G_TYPE_OBJECT, 0,
G_IMPLEMENT_INTERFACE (G_TYPE_LIST_MODEL,
file_info_selection_list_model_init)
G_IMPLEMENT_INTERFACE (GTK_TYPE_SELECTION_MODEL,
file_info_selection_selection_model_init))
static void
file_info_selection_items_changed_cb (GListModel *model,
guint position,
guint removed,
guint added,
FileInfoSelection *self)
{
g_list_model_items_changed (G_LIST_MODEL (self), position, removed, added);
}
static void
file_info_selection_clear_model (FileInfoSelection *self)
{
if (self->model == NULL)
return;
g_signal_handlers_disconnect_by_func (self->model,
file_info_selection_items_changed_cb,
self);
g_clear_object (&self->model);
}
static void
file_info_selection_dispose (GObject *object)
{
FileInfoSelection *self = FILE_INFO_SELECTION (object);
file_info_selection_clear_model (self);
G_OBJECT_CLASS (file_info_selection_parent_class)->dispose (object);
}
static void
file_info_selection_class_init (FileInfoSelectionClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->dispose = file_info_selection_dispose;
}
static void
file_info_selection_init (FileInfoSelection *self)
{
}
static FileInfoSelection *
file_info_selection_new (GListModel *model)
{
FileInfoSelection *result;
result = g_object_new (FILE_INFO_TYPE_SELECTION, NULL);
result->model = g_object_ref (model);
g_signal_connect (result->model, "items-changed",
G_CALLBACK (file_info_selection_items_changed_cb), result);
return result;
}
/*** ---------------------- ***/
GSList *pending = NULL;
guint active = 0;
static void
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loading_cb (GtkDirectoryList *dir,
GParamSpec *pspec,
gpointer unused)
{
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if (gtk_directory_list_is_loading (dir))
{
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active++;
/* HACK: ensure loading finishes and the dir doesn't get destroyed */
g_object_ref (dir);
}
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else
{
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active--;
g_object_unref (dir);
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while (active < 20 && pending)
{
GtkDirectoryList *dir2 = pending->data;
pending = g_slist_remove (pending, dir2);
gtk_directory_list_set_file (dir2, g_object_get_data (G_OBJECT (dir2), "file"));
g_object_unref (dir2);
}
}
}
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static GtkDirectoryList *
create_directory_list (GFile *file)
{
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GtkDirectoryList *dir;
dir = gtk_directory_list_new (G_FILE_ATTRIBUTE_STANDARD_TYPE
"," G_FILE_ATTRIBUTE_STANDARD_NAME
"," G_FILE_ATTRIBUTE_STANDARD_DISPLAY_NAME,
NULL);
gtk_directory_list_set_io_priority (dir, G_PRIORITY_DEFAULT_IDLE);
g_signal_connect (dir, "notify::loading", G_CALLBACK (loading_cb), NULL);
g_assert (!gtk_directory_list_is_loading (dir));
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if (active > 20)
{
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g_object_set_data_full (G_OBJECT (dir), "file", g_object_ref (file), g_object_unref);
pending = g_slist_prepend (pending, g_object_ref (dir));
}
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else
{
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gtk_directory_list_set_file (dir, file);
}
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return dir;
}
static char *
get_file_path (GFileInfo *info)
{
GFile *file;
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file = G_FILE (g_file_info_get_attribute_object (info, "standard::file"));
return g_file_get_path (file);
}
static GListModel *
create_list_model_for_directory (gpointer file)
{
GtkSortListModel *sort;
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GtkDirectoryList *dir;
GtkSorter *sorter;
if (g_file_query_file_type (file, G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS, NULL) != G_FILE_TYPE_DIRECTORY)
return NULL;
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dir = create_directory_list (file);
sorter = gtk_string_sorter_new (gtk_cclosure_expression_new (G_TYPE_STRING, NULL, 0, NULL, (GCallback) get_file_path, NULL, NULL));
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sort = gtk_sort_list_model_new (G_LIST_MODEL (dir), sorter);
g_object_unref (sorter);
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g_object_unref (dir);
return G_LIST_MODEL (sort);
}
typedef struct _RowData RowData;
struct _RowData
{
GtkWidget *expander;
GtkWidget *icon;
GtkWidget *name;
GCancellable *cancellable;
GtkTreeListRow *current_item;
};
static void row_data_notify_item (GtkListItem *item,
GParamSpec *pspec,
RowData *data);
static void
row_data_unbind (RowData *data)
{
if (data->current_item == NULL)
return;
if (data->cancellable)
{
g_cancellable_cancel (data->cancellable);
g_clear_object (&data->cancellable);
}
g_clear_object (&data->current_item);
}
static void
row_data_update_info (RowData *data,
GFileInfo *info)
{
GIcon *icon;
const char *thumbnail_path;
thumbnail_path = g_file_info_get_attribute_byte_string (info, G_FILE_ATTRIBUTE_THUMBNAIL_PATH);
if (thumbnail_path)
{
/* XXX: not async */
GFile *thumbnail_file = g_file_new_for_path (thumbnail_path);
icon = g_file_icon_new (thumbnail_file);
g_object_unref (thumbnail_file);
}
else
{
icon = g_file_info_get_icon (info);
}
gtk_widget_set_visible (data->icon, icon != NULL);
gtk_image_set_from_gicon (GTK_IMAGE (data->icon), icon);
}
static void
copy_attribute (GFileInfo *to,
GFileInfo *from,
const gchar *attribute)
{
GFileAttributeType type;
gpointer value;
if (g_file_info_get_attribute_data (from, attribute, &type, &value, NULL))
g_file_info_set_attribute (to, attribute, type, value);
}
static void
row_data_got_thumbnail_info_cb (GObject *source,
GAsyncResult *res,
gpointer _data)
{
RowData *data = _data; /* invalid if operation was cancelled */
GFile *file = G_FILE (source);
GFileInfo *queried, *info;
queried = g_file_query_info_finish (file, res, NULL);
if (queried == NULL)
return;
/* now we know row is valid */
info = gtk_tree_list_row_get_item (data->current_item);
copy_attribute (info, queried, G_FILE_ATTRIBUTE_THUMBNAIL_PATH);
copy_attribute (info, queried, G_FILE_ATTRIBUTE_THUMBNAILING_FAILED);
copy_attribute (info, queried, G_FILE_ATTRIBUTE_STANDARD_ICON);
g_object_unref (queried);
row_data_update_info (data, info);
g_clear_object (&data->cancellable);
}
static void
row_data_bind (RowData *data,
GtkTreeListRow *item)
{
GFileInfo *info;
row_data_unbind (data);
if (item == NULL)
return;
data->current_item = g_object_ref (item);
gtk_tree_expander_set_list_row (GTK_TREE_EXPANDER (data->expander), item);
info = gtk_tree_list_row_get_item (item);
if (!g_file_info_has_attribute (info, "filechooser::queried"))
{
data->cancellable = g_cancellable_new ();
g_file_info_set_attribute_boolean (info, "filechooser::queried", TRUE);
g_file_query_info_async (G_FILE (g_file_info_get_attribute_object (info, "standard::file")),
G_FILE_ATTRIBUTE_THUMBNAIL_PATH ","
G_FILE_ATTRIBUTE_THUMBNAILING_FAILED ","
G_FILE_ATTRIBUTE_STANDARD_ICON,
G_FILE_QUERY_INFO_NONE,
G_PRIORITY_DEFAULT,
data->cancellable,
row_data_got_thumbnail_info_cb,
data);
}
row_data_update_info (data, info);
gtk_label_set_label (GTK_LABEL (data->name), g_file_info_get_display_name (info));
g_object_unref (info);
}
static void
row_data_notify_item (GtkListItem *item,
GParamSpec *pspec,
RowData *data)
{
row_data_bind (data, gtk_list_item_get_item (item));
}
static void
row_data_free (gpointer _data)
{
RowData *data = _data;
row_data_unbind (data);
g_slice_free (RowData, data);
}
static void
setup_widget (GtkListItem *list_item,
gpointer unused)
{
GtkWidget *box, *child;
RowData *data;
data = g_slice_new0 (RowData);
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_box_append (GTK_BOX (box), child);
data->expander = gtk_tree_expander_new ();
gtk_box_append (GTK_BOX (box), data->expander);
box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 4);
gtk_tree_expander_set_child (GTK_TREE_EXPANDER (data->expander), box);
data->icon = gtk_image_new ();
gtk_box_append (GTK_BOX (box), data->icon);
data->name = gtk_label_new (NULL);
gtk_label_set_max_width_chars (GTK_LABEL (data->name), 25);
gtk_label_set_ellipsize (GTK_LABEL (data->name), PANGO_ELLIPSIZE_END);
gtk_box_append (GTK_BOX (box), data->name);
g_signal_connect (list_item, "notify::item", G_CALLBACK (row_data_notify_item), data);
g_object_set_data_full (G_OBJECT (list_item), "row-data", data, row_data_free);
}
static GListModel *
create_list_model_for_file_info (gpointer file_info,
gpointer unused)
{
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GFile *file = G_FILE (g_file_info_get_attribute_object (file_info, "standard::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;
}
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);
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GFile *file = G_FILE (g_file_info_get_attribute_object (info, "standard::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;
FileInfoSelection *selectionmodel;
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_grid_view_new_with_factory (
gtk_functions_list_item_factory_new (setup_widget,
NULL,
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);
selectionmodel = file_info_selection_new (G_LIST_MODEL (filter));
g_object_unref (filter);
gtk_grid_view_set_model (GTK_GRID_VIEW (listview), G_LIST_MODEL (selectionmodel));
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 (selectionmodel);
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;
}