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testtreelistmodel: Add a hack to handle LONG lists

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... and make the lists long by autoexpanding the tree.
This commit is contained in:
Benjamin Otte 2018-09-12 03:10:50 +02:00
parent 64d97b233b
commit 65b795b861
1 changed files with 51 additions and 16 deletions
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67
tests/testtreelistmodel.c
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@ -1,5 +1,7 @@
#include <gtk/gtk.h>
#define ROWS 30
static GListModel *
create_list_model_for_directory (gpointer file,
gpointer unused)
@ -9,6 +11,9 @@ create_list_model_for_directory (gpointer file,
GFile *child;
GFileInfo *info;
if (g_file_query_file_type (file, G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS, NULL) != G_FILE_TYPE_DIRECTORY)
return NULL;
enumerate = g_file_enumerate_children (file,
G_FILE_ATTRIBUTE_STANDARD_TYPE
"," G_FILE_ATTRIBUTE_STANDARD_NAME,
@ -44,6 +49,7 @@ create_widget_for_model (gpointer item,
guint depth;
row = gtk_list_box_row_new ();
gtk_widget_set_vexpand (row, TRUE);
box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
gtk_container_add (GTK_CONTAINER (row), box);
@ -86,13 +92,24 @@ create_widget_for_model (gpointer item,
return row;
}
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)));
}
int
main (int argc, char *argv[])
{
GtkWidget *win;
GtkWidget *sw;
GtkWidget *listbox;
GListModel *model, *dirmodel;
GtkAdjustment *adjustment;
GtkWidget *win, *box, *scrollbar, *listbox;
GListModel *dirmodel;
GtkTreeListModel *tree;
GtkSliceListModel *slice;
GFile *root;
gtk_init ();
@ -101,26 +118,44 @@ main (int argc, char *argv[])
gtk_window_set_default_size (GTK_WINDOW (win), 400, 600);
g_signal_connect (win, "destroy", G_CALLBACK (gtk_main_quit), win);
sw = gtk_scrolled_window_new (NULL, NULL);
gtk_container_add (GTK_CONTAINER (win), sw);
box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
gtk_container_add (GTK_CONTAINER (win), box);
listbox = gtk_list_box_new ();
gtk_container_add (GTK_CONTAINER (sw), listbox);
gtk_widget_set_hexpand (listbox, TRUE);
gtk_container_add (GTK_CONTAINER (box), listbox);
root = g_file_new_for_path (g_get_current_dir ());
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, NULL);
model = G_LIST_MODEL (gtk_tree_list_model_new (FALSE,
dirmodel,
FALSE,
create_list_model_for_directory,
NULL, NULL));
tree = gtk_tree_list_model_new (FALSE,
dirmodel,
TRUE,
create_list_model_for_directory,
NULL, NULL);
g_object_unref (dirmodel);
slice = gtk_slice_list_model_new (G_LIST_MODEL (tree), 0, ROWS);
gtk_list_box_bind_model (GTK_LIST_BOX (listbox),
model,
G_LIST_MODEL (slice),
create_widget_for_model,
root, g_object_unref);
g_object_set_data (G_OBJECT (listbox), "model", model);
g_object_unref (model);
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 (tree, "items-changed", G_CALLBACK (update_adjustment), adjustment);
scrollbar = gtk_scrollbar_new (GTK_ORIENTATION_VERTICAL, adjustment);
gtk_container_add (GTK_CONTAINER (box), scrollbar);
g_object_unref (tree);
g_object_unref (slice);
gtk_widget_show (win);