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

src/node_dialog_browse.h

@@ -32,6 +32,8 @@ public:
     NodeButton* btn_cancel;
     NodeButton* btn_ok;
     NodeButton* btn_delete;
+    NodeButton* btn_path;
+    NodeText* working_path;
     NodeDialogBrowseItem* current = nullptr;
     Node* container;
     std::string selected_path;
@@ -42,6 +44,8 @@ public:
     virtual void clone_finalize(Node* dest) const override;
     virtual void init() override;
     void init_controls();
+    void init_list();
+    void clear_list();
     virtual void loaded() override;
     bool is_selected();
 };