add tick and on_tick event, fix unsaved document prompt, implement TextInput blinking cursor

src/node_message_box.cpp

@@ -21,5 +21,26 @@ void NodeMessageBox::init()
     btn_ok = m_template->find<NodeButton>("btn-ok");
     btn_ok->on_click = [&](Node*) { destroy(); };
     btn_cancel = m_template->find<NodeButton>("btn-cancel");
-    btn_cancel->on_click = [&](Node*) { destroy(); };
+    on_submit = btn_cancel->on_click = [&](Node*) { destroy(); };
+}
+
+kEventResult NodeMessageBox::handle_event(Event* e)
+{
+    Node::handle_event(e);
+    auto ke = (KeyEvent*)e;
+    switch (e->m_type)
+    {
+    case kEventType::KeyDown:
+        break;
+    case kEventType::KeyUp:
+        if (ke->m_key == kKey::KeyEnter && on_submit)
+            on_submit(this);
+        break;
+    case kEventType::KeyChar:
+        break;
+    default:
+        return kEventResult::Available;
+        break;
+    }
+    return kEventResult::Consumed;
 }