replace deprecated classes, update code, fix errors, add missing stuff

src/create-category.c

@@ -0,0 +1,56 @@
+#include <gtk/gtk.h>
+#include <adwaita.h>
+
+#include <glib/gi18n.h>
+
+#include "create-category.h"
+
+struct _FlashcardsCreateCategoryDialog
+{
+    AdwAlertDialog parent;
+
+    GtkEditable *entry;
+
+    FlashcardsAppWindow *win;
+};
+
+G_DEFINE_TYPE(FlashcardsCreateCategoryDialog, flashcards_create_category_dialog, ADW_TYPE_ALERT_DIALOG);
+
+static void
+flashcards_create_category_dialog_init(FlashcardsCreateCategoryDialog *self)
+{
+    gtk_widget_init_template(GTK_WIDGET(self));
+}
+
+static void
+on_response(AdwAlertDialog *dialog,
+            gchar *response,
+            gpointer user_data)
+{
+    FlashcardsCreateCategoryDialog *self = FLASHCARDS_CREATE_CATEGORY_DIALOG(user_data);
+
+    const gchar *category = gtk_editable_get_text(self->entry);
+
+    if (strcmp(response, "add") == 0 && strlen(category) > 0)
+    {
+        flashcards_app_window_test(self->win, category);
+    }
+}
+
+static void
+flashcards_create_category_dialog_class_init(FlashcardsCreateCategoryDialogClass *class)
+{
+    gtk_widget_class_set_template_from_resource(GTK_WIDGET_CLASS(class), "/li/sopht/flashcards/create-category.ui");
+
+    gtk_widget_class_bind_template_child(GTK_WIDGET_CLASS(class), FlashcardsCreateCategoryDialog, entry);
+
+    gtk_widget_class_bind_template_callback(GTK_WIDGET_CLASS(class), on_response);
+}
+
+FlashcardsCreateCategoryDialog *
+flashcards_create_category_dialog_new(FlashcardsAppWindow *win)
+{
+    FlashcardsCreateCategoryDialog *self = g_object_new(FLASHCARDS_CREATE_CATEGORY_DIALOG_TYPE, NULL);
+    self->win = win;
+    return self;
+}