diff -r 1ce14068ef31 -r 294d5515583a ui/gtk/window.c
--- a/ui/gtk/window.c	Wed Oct 23 10:37:43 2024 +0200
+++ b/ui/gtk/window.c	Wed Oct 23 17:40:45 2024 +0200
@@ -42,6 +42,7 @@
 #include "toolbar.h"
 #include "container.h"
 #include "headerbar.h"
+#include "button.h"
 
 static int nwindows = 0;
 
@@ -586,3 +587,158 @@
     ui_gtkfilechooser(obj, GTK_FILE_CHOOSER_ACTION_SAVE, 0, name, file_selected_callback, cbdata);
 }
 
+#if GTK_CHECK_VERSION(4, 10, 0)
+#define DIALOG_NEW() gtk_window_new()
+#else
+#define DIALOG_NEW() gtk_dialog_new()
+
+static void ui_dialogwindow_response(GtkDialog* self, gint response_id, gpointer user_data) {
+    UiEventData *event = user_data;
+    // TODO: do we need to check if response_id == GTK_RESPONSE_DELETE_EVENT?
+    if(event->callback) {
+        UiEvent e;
+        e.obj = event->obj;
+        e.window = event->obj->window;
+        e.document = event->obj->ctx->document;
+        e.eventdata = NULL;
+        e.intval = event->value;
+        event->callback(&e, event->userdata);
+    }
+}
+
+#endif
+
+#if GTK_CHECK_VERSION(4, 0, 0)
+#define HEADERBAR_SHOW_CLOSEBUTTON(headerbar, set) gtk_header_bar_set_show_title_buttons(GTK_HEADER_BAR(headerbar), set)
+#else
+#define HEADERBAR_SHOW_CLOSEBUTTON(headerbar, set) gtk_header_bar_set_show_close_button(GTK_HEADER_BAR(headerbar), set)
+#endif
+
+
+
+UiObject* ui_dialog_window_create(UiObject *parent, UiDialogWindowArgs args) {
+    GtkWidget *dialog = DIALOG_NEW();
+    gtk_window_set_transient_for(GTK_WINDOW(dialog), GTK_WINDOW(parent->widget));
+    if(args.modal != UI_OFF) {
+        gtk_window_set_modal(GTK_WINDOW(dialog), TRUE);
+    }
+    
+    CxMempool *mp = cxBasicMempoolCreate(256);
+    UiObject *obj = cxCalloc(mp->allocator, 1, sizeof(UiObject)); 
+    obj->ctx = uic_context(obj, mp);
+    obj->widget = dialog;
+    nwindows++;
+    
+    if(args.title != NULL) {
+        gtk_window_set_title(GTK_WINDOW(dialog), args.title);
+    }
+    
+#if ! GTK_CHECK_VERSION(4, 10, 0)
+    UiEventData *event = malloc(sizeof(UiEventData));
+    event->obj = obj;
+    event->userdata = args.onclickdata;
+    event->callback = args.onclick;
+    event->value = 0;
+    event->customdata = NULL;
+
+    g_signal_connect(dialog, "response", G_CALLBACK(ui_dialogwindow_response), event);
+    g_signal_connect(
+            dialog,
+            "destroy",
+            G_CALLBACK(ui_destroy_userdata),
+            event);
+#endif
+    
+    g_signal_connect(
+            dialog,
+            "destroy",
+            G_CALLBACK(ui_exit_event),
+            obj);
+    
+#if GTK_MAJOR_VERSION < 4
+    GtkWidget *c = gtk_dialog_get_content_area(GTK_DIALOG(dialog));
+    gtk_container_remove(GTK_CONTAINER(dialog), c);
+#endif
+    
+    GtkWidget *content_vbox = ui_gtk_vbox_new(0);
+    obj->container = ui_box_container(obj, content_vbox, UI_CONTAINER_VBOX);
+    if(args.lbutton1 || args.lbutton2 || args.rbutton3 || args.rbutton4) {
+#if GTK_CHECK_VERSION(3, 10, 0)
+        if(args.titlebar_buttons != UI_OFF) {
+            GtkWidget *headerbar = gtk_header_bar_new();
+            gtk_window_set_titlebar(GTK_WINDOW(dialog), headerbar);
+            if(args.show_closebutton == UI_OFF) {
+                HEADERBAR_SHOW_CLOSEBUTTON(headerbar, FALSE);
+            }
+            
+            if(args.lbutton1) {
+                GtkWidget *button = ui_create_button(obj, args.lbutton1, NULL, args.onclick, args.onclickdata, 1);
+                gtk_header_bar_pack_start(GTK_HEADER_BAR(headerbar), button);
+                if(args.default_button == 1) {
+                    WIDGET_ADD_CSS_CLASS(button, "suggested-action");
+                }
+            }
+            if(args.lbutton2) {
+                GtkWidget *button = ui_create_button(obj, args.lbutton2, NULL, args.onclick, args.onclickdata, 2);
+                gtk_header_bar_pack_start(GTK_HEADER_BAR(headerbar), button);
+                if(args.default_button == 2) {
+                    WIDGET_ADD_CSS_CLASS(button, "suggested-action");
+                }
+            }
+            
+            if(args.rbutton4) {
+                GtkWidget *button = ui_create_button(obj, args.rbutton4, NULL, args.onclick, args.onclickdata, 4);
+                gtk_header_bar_pack_end(GTK_HEADER_BAR(headerbar), button);
+                if(args.default_button == 4) {
+                    WIDGET_ADD_CSS_CLASS(button, "suggested-action");
+                }
+            }
+            if(args.rbutton3) {
+                GtkWidget *button = ui_create_button(obj, args.rbutton3, NULL, args.onclick, args.onclickdata, 3);
+                gtk_header_bar_pack_end(GTK_HEADER_BAR(headerbar), button);
+                if(args.default_button == 3) {
+                    WIDGET_ADD_CSS_CLASS(button, "suggested-action");
+                }
+            }
+            WINDOW_SET_CONTENT(obj->widget, content_vbox);
+            return obj;
+        }
+#endif
+        GtkWidget *vbox = ui_gtk_vbox_new(0);
+        WINDOW_SET_CONTENT(obj->widget, vbox);
+        
+        GtkWidget *separator = gtk_separator_new(GTK_ORIENTATION_HORIZONTAL);
+        
+        GtkWidget *grid = ui_create_grid_widget(10, 10);
+        GtkWidget *widget = ui_box_set_margin(grid, 16);
+        gtk_grid_set_column_homogeneous(GTK_GRID(grid), TRUE); 
+        
+        if(args.lbutton1) {
+            GtkWidget *button = ui_create_button(obj, args.lbutton1, NULL, args.onclick, args.onclickdata, 1);
+            gtk_grid_attach(GTK_GRID(grid), button, 0, 0, 1, 1);
+        }
+        if(args.lbutton2) {
+            GtkWidget *button = ui_create_button(obj, args.lbutton2, NULL, args.onclick, args.onclickdata, 2);
+            gtk_grid_attach(GTK_GRID(grid), button, 1, 0, 1, 1);
+        }
+        GtkWidget *space = gtk_label_new(NULL);
+        gtk_widget_set_hexpand(space, TRUE);
+        gtk_grid_attach(GTK_GRID(grid), space, 2, 0, 1, 1);
+        if(args.rbutton3) {
+            GtkWidget *button = ui_create_button(obj, args.rbutton3, NULL, args.onclick, args.onclickdata, 3);
+            gtk_grid_attach(GTK_GRID(grid), button, 3, 0, 1, 1);
+        }
+        if(args.rbutton3) {
+            GtkWidget *button = ui_create_button(obj, args.rbutton4, NULL, args.onclick, args.onclickdata, 4);
+            gtk_grid_attach(GTK_GRID(grid), button, 4, 0, 1, 1);
+        }
+        
+        BOX_ADD_EXPAND(vbox, content_vbox);   
+        BOX_ADD_NO_EXPAND(vbox, separator);
+        BOX_ADD_NO_EXPAND(vbox, widget);
+    } else {
+        WINDOW_SET_CONTENT(obj->widget, content_vbox);
+    }
+    
+    return obj;
+}