Redirect to file dialog

src/Tools/tim_tool/ui/app-window.slint

@@ -1,5 +1,5 @@
 import { AboutTab }  from "./tab/about-tab.slint";
-import { FileTab }   from "./tab/file-tab.slint";
+import { FileTab, State }   from "./tab/file-tab.slint";
 import { MainTab }   from "./tab/main-tab.slint";
 import { TabWidget } from "std-widgets.slint";
 
@@ -9,7 +9,6 @@ export component MainWindow inherits Window {
     in-out property main_tab_vram_file_list <=> main_tab.vram_files;
     in-out property main_tab_vram_images    <=> main_tab.vram_images;
 
-    callback main_tab_add_file_clicked    <=> main_tab.add_file_clicked;
     callback main_tab_remove_file_clicked <=> main_tab.remove_file_clicked;
     callback move_vram_image              <=> main_tab.move_vram_image;
 
@@ -40,6 +39,7 @@ export component MainWindow inherits Window {
             main_tab := MainTab {
                 x: 0px;
                 y: 0px;
+                add_file_clicked => {root.change_to_load_file()}
             }
         }
         Tab {
@@ -47,4 +47,13 @@ export component MainWindow inherits Window {
             AboutTab {}
         }
     }
+
+    public function change_to_load_file() {
+        file_tab.state           = State.ConvertImage;
+        tab_widget.current-index = 0;
+    }
+
+    public function change_to_main() {
+        tab_widget.current-index = 1;
+    }
 }