add single_buffer and copy/paste one file or dir

src/rrr/layers/gui/browser/navigation/navigation.cpp

@@ -4,6 +4,7 @@
 
 #include "try_engine/event/event_classificator.hpp"
 #include "utils/types.hpp"
+#include "buffer/buffer.hpp"
 
 #include "logger/logger.hpp"
 
@@ -58,6 +59,8 @@ namespace rrr::layers::gui
 
         ImGui::TextUnformatted(">");
         ImGui::SameLine(22.f);
+        // HERE 
+        // нужно использовать std::distance
         current_position = it - data->begin();
       }
       else
@@ -107,6 +110,10 @@ namespace rrr::layers::gui
   {
     auto file_content = f.path.filename().string();
 
+    if (!buffers::get_instance().single_buffer.empty())
+      if (f.path == buffers::get_instance().single_buffer[1].path)
+        file_content = "* " + file_content;
+
     if (f.is_link)
       file_content += " ->";
 
@@ -219,10 +226,17 @@ namespace rrr::layers::gui
         set_scroll();
       }
 
+      // вставка из single_buffer
+      if (shift && key.get_keycode() == try_engine::key::P)
+      {
+        if (buffers::get_instance().single_buffer.empty()) return;
+        cnt->paste(buffers::get_instance().single_buffer[1].path);
+        buffers::get_instance().single_buffer.clear();
+      }
+
       return;
     }
 
-
     if (key.get_keycode() == try_engine::key::J)
     {
       cnt->increment_position(STEP_DOWN);
@@ -269,6 +283,22 @@ namespace rrr::layers::gui
       set_scroll();
       g_coutn = 0;
     }
+
+    // копирование/добавление в буфер одного файла вместо другого
+    if (key.get_keycode() == try_engine::key::C)
+    {
+      if (buffers::get_instance().single_buffer.empty())
+        buffers::get_instance().single_buffer[1] = selected_file;
+      else
+        if (selected_file.path == buffers::get_instance().single_buffer[1].path)
+          buffers::get_instance().single_buffer.clear();
+        else
+          buffers::get_instance().single_buffer[1] = selected_file;
+    }
+
+    // очистка
+    if (key.get_keycode() == try_engine::key::ESCAPE)
+      buffers::get_instance().single_buffer.clear();
   }
   
   void navigation::released(system_event& e)