/* Copyright (C) 2019 Red Hat, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library. If not, see <http://www.gnu.org/licenses/>.
 */
#include <gtk/gtk.h>

static int win_activated;
static int box_activated;

static void
win_activate (GSimpleAction *action,
              GVariant      *parameter,
              gpointer       user_data)
{
  win_activated++;
}

static void
box_activate (GSimpleAction *action,
              GVariant      *parameter,
              gpointer       user_data)
{
  box_activated++;
}

/* Test that inheriting actions along the widget
 * hierarchy works as expected. Since GtkWidget does
 * not expose the actions, we test this by observing
 * the effect of activating them.
 */
static void
test_action (void)
{
  GtkWidget *window;
  GtkWidget *box;
  GtkWidget *button;
  GSimpleActionGroup *win_actions;
  GSimpleActionGroup *box_actions;
  GActionEntry win_entries[] = {
    { "action", win_activate, NULL, NULL, NULL },
  };
  GActionEntry box_entries[] = {
    { "action", box_activate, NULL, NULL, NULL },
  };

  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
  box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
  button = gtk_button_new ();

  gtk_container_add (GTK_CONTAINER (window), box);
  gtk_container_add (GTK_CONTAINER (box), button);

  win_actions = g_simple_action_group_new ();
  g_action_map_add_action_entries (G_ACTION_MAP (win_actions),
                                   win_entries,
                                   G_N_ELEMENTS (win_entries),
                                   NULL);

  box_actions = g_simple_action_group_new ();
  g_action_map_add_action_entries (G_ACTION_MAP (box_actions),
                                   box_entries,
                                   G_N_ELEMENTS (box_entries),
                                   NULL);

  gtk_widget_insert_action_group (window, "win", G_ACTION_GROUP (win_actions));
  gtk_widget_insert_action_group (box, "box", G_ACTION_GROUP (box_actions));

  g_assert_cmpint (win_activated, ==, 0);
  g_assert_cmpint (box_activated, ==, 0);

  gtk_widget_activate_action (button, "win.action", NULL);

  g_assert_cmpint (win_activated, ==, 1);
  g_assert_cmpint (box_activated, ==, 0);

  gtk_widget_activate_action (box, "win.action", NULL);

  g_assert_cmpint (win_activated, ==, 2);
  g_assert_cmpint (box_activated, ==, 0);

  gtk_widget_activate_action (button, "box.action", NULL);

  g_assert_cmpint (win_activated, ==, 2);
  g_assert_cmpint (box_activated, ==, 1);

  gtk_widget_activate_action (window, "box.action", NULL);

  g_assert_cmpint (win_activated, ==, 2);
  g_assert_cmpint (box_activated, ==, 1);

  gtk_widget_destroy (window);
  g_object_unref (win_actions);
  g_object_unref (box_actions);
}

static int cut_activated;
static int copy_activated;
static int paste_activated;
static int visibility_changed;

static void
cut_activate (GSimpleAction *action,
              GVariant      *parameter,
              gpointer       user_data)
{
  cut_activated++;
}

static void
copy_activate (GSimpleAction *action,
               GVariant      *parameter,
               gpointer       user_data)
{
  copy_activated++;
}

static void
paste_activate (GSimpleAction *action,
                GVariant      *parameter,
                gpointer       user_data)
{
  paste_activated++;
}

static void
visibility_changed_cb (GObject    *object,
                       GParamSpec *pspec,
                       gpointer    user_data)
{
  visibility_changed++;
}

/* Spot-check that GtkText has the class actions
 * for the context menu. Here we test that the clipboard
 * actions are present, and that toggling visibility
 * via the action works.
 */
static void
test_text (void)
{
  GtkWidget *box;
  GtkWidget *text;
  GSimpleActionGroup *clipboard_actions;
  GActionEntry clipboard_entries[] = {
    { "cut", cut_activate, NULL, NULL, NULL },
    { "copy", copy_activate, NULL, NULL, NULL },
    { "paste", paste_activate, NULL, NULL, NULL },
  };
  box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
  text = gtk_text_new ();

  gtk_container_add (GTK_CONTAINER (box), text);

  clipboard_actions = g_simple_action_group_new ();
  g_action_map_add_action_entries (G_ACTION_MAP (clipboard_actions),
                                   clipboard_entries,
                                   G_N_ELEMENTS (clipboard_entries),
                                   NULL);

  gtk_widget_insert_action_group (box, "clipboard", G_ACTION_GROUP (clipboard_actions));

  gtk_widget_activate_action (text, "cut.clipboard", NULL);
  gtk_widget_activate_action (text, "copy.clipboard", NULL);
  gtk_widget_activate_action (text, "paste.clipboard", NULL);

  g_assert_cmpint (cut_activated, ==, 0);
  g_assert_cmpint (copy_activated, ==, 0);
  g_assert_cmpint (paste_activated, ==, 0);

  g_signal_connect (text, "notify::visibility",
                    G_CALLBACK (visibility_changed_cb), NULL);

  gtk_widget_activate_action (text, "misc.toggle-visibility", NULL);

  g_assert_cmpint (visibility_changed, ==, 1);

  gtk_widget_destroy (box);
  g_object_unref (clipboard_actions);
}

/* Test that inheritance works for individual actions
 * even if they are in groups with the same prefix.
 * This is a change from the way things work in GTK3.
 */
static void
test_overlap (void)
{
  GtkWidget *window;
  GtkWidget *box;
  GActionEntry win_entries[] = {
    { "win", win_activate, NULL, NULL, NULL },
  };
  GActionEntry box_entries[] = {
    { "box", box_activate, NULL, NULL, NULL },
  };
  GSimpleActionGroup *win_actions;
  GSimpleActionGroup *box_actions;

  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
  box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);

  gtk_container_add (GTK_CONTAINER (window), box);

  win_actions = g_simple_action_group_new ();
  g_action_map_add_action_entries (G_ACTION_MAP (win_actions),
                                   win_entries,
                                   G_N_ELEMENTS (win_entries),
                                   NULL);

  box_actions = g_simple_action_group_new ();
  g_action_map_add_action_entries (G_ACTION_MAP (box_actions),
                                   box_entries,
                                   G_N_ELEMENTS (box_entries),
                                   NULL);

  gtk_widget_insert_action_group (window, "actions", G_ACTION_GROUP (win_actions));
  gtk_widget_insert_action_group (box, "actions", G_ACTION_GROUP (box_actions));

  win_activated = 0;
  box_activated = 0;

  gtk_widget_activate_action (box, "actions.win", NULL);

  g_assert_cmpint (win_activated, ==, 1);
  g_assert_cmpint (box_activated, ==, 0);

  gtk_widget_activate_action (box, "actions.box", NULL);

  g_assert_cmpint (win_activated, ==, 1);
  g_assert_cmpint (box_activated, ==, 1);


  gtk_widget_destroy (window);
  g_object_unref (win_actions);
  g_object_unref (box_actions);
}

int
main (int   argc,
      char *argv[])
{
  gtk_test_init (&argc, &argv);

  g_test_add_func ("/action/inheritance", test_action);
  g_test_add_func ("/action/text", test_text);
  g_test_add_func ("/action/overlap", test_overlap);

  return g_test_run();
}