Improve highlighting structure

- switched to a sparse delta based map
- true lazy-loading to avoid any unneccessary allocations
- fixed windows management api

src/editor/helpers.cc

@@ -410,11 +410,10 @@ void Editor::fetch_lsp_hover() {
           hover_text += contents.get<std::string>();
         }
         if (!hover_text.empty()) {
-          auto hover_box = static_cast<HoverBox *>(ui::hover_popup->tile.get());
-          hover_box->clear();
-          hover_box->text = clean_text(hover_text);
-          hover_box->is_markup = is_markup;
-          message.editor->hover_active = true;
+          message.editor->hover_popup->clear();
+          message.editor->hover_popup->text = clean_text(hover_text);
+          message.editor->hover_popup->is_markup = is_markup;
+          message.editor->hover_popup->hidden = false;
         }
       }
     };
@@ -423,12 +422,14 @@ void Editor::fetch_lsp_hover() {
 }
 
 void Editor::handle_click(KeyEvent event, Coord size) {
-  focused_window = this;
+  layout::focused_window = this;
   this->size = size;
   static std::chrono::steady_clock::time_point last_click_time =
       std::chrono::steady_clock::now();
   static uint32_t click_count = 0;
   static Coord last_click_pos = {UINT32_MAX, UINT32_MAX};
+  if (!this->hover_popup->hidden)
+    this->hover_popup->hidden = true;
   if (event.key_type == KEY_MOUSE) {
     auto now = std::chrono::steady_clock::now();
     auto duration = std::chrono::duration_cast<std::chrono::milliseconds>(