Language protocol: no longer show tooltips when no completion is selected

src/autocomplete.cpp

@@ -169,7 +169,7 @@ void Autocomplete::setup_dialog() {
       on_change(index, text);
 
     if(!index) {
-      tooltips.hide();
+      clear_tooltips();
       return;
     }
 

src/autocomplete.hpp

@@ -56,6 +56,7 @@ public:
   std::function<void(unsigned int, const std::string &, bool)> on_select;
 
   std::function<std::function<void(Tooltip &tooltip)>(unsigned int)> set_tooltip_buffer = [](unsigned int index) { return nullptr; };
+  std::function<void()> clear_tooltips = [this] { tooltips.hide(); };
 
   Autocomplete(Source::BaseView *view, bool &interactive_completion, guint &last_keyval, bool pass_buffer_and_strip_word, bool use_thread);
 

src/source_language_protocol.cpp

@@ -715,6 +715,7 @@ void Source::LanguageProtocolView::initialize() {
 
 Source::LanguageProtocolView::~LanguageProtocolView() {
   autocomplete_delayed_show_arguments_connection.disconnect();
+  resolve_completion_item_connection.disconnect();
   update_type_coverage_connection.disconnect();
 
   if(initialize_thread.joinable())
@@ -1504,7 +1505,7 @@ void Source::LanguageProtocolView::setup_autocomplete() {
     // Activate argument completions
     get_buffer()->signal_changed().connect(
         [this] {
-          autocompete_possibly_no_arguments = false;
+          autocomplete_possibly_no_arguments = false;
           if(!interactive_completion)
             return;
           if(CompletionDialog::get() && CompletionDialog::get()->is_visible())
@@ -1732,7 +1733,7 @@ void Source::LanguageProtocolView::setup_autocomplete() {
               if(autocomplete_rows.empty()) {
                 dispatcher.post([this] {
                   // Move cursor forward if no arguments in completed function and if cursor is still inside ()
-                  if(autocompete_possibly_no_arguments) {
+                  if(autocomplete_possibly_no_arguments) {
                     auto iter = get_buffer()->get_insert()->get_iter();
                     auto prev = iter;
                     if(prev.backward_char() && *prev == '(' && *iter == ')' && iter.forward_char())
@@ -1882,7 +1883,7 @@ void Source::LanguageProtocolView::setup_autocomplete() {
       if(*iter == ')' && iter.backward_char() && *iter == '(') { // If no arguments, try signatureHelp
         last_keyval = '(';
         if(is_js) // Workaround for typescript-language-server
-          autocompete_possibly_no_arguments = true;
+          autocomplete_possibly_no_arguments = true;
         autocomplete->run();
       }
     }
@@ -1916,32 +1917,42 @@ void Source::LanguageProtocolView::setup_autocomplete() {
     };
 
     if(capabilities.completion_resolve && autocomplete_row.detail.empty() && autocomplete_row.documentation.value.empty() && autocomplete_row.item_object) {
-      std::stringstream ss;
-      bool first = true;
-      for(auto &child : autocomplete_row.item_object->children_or_empty()) {
-        ss << (!first ? ",\"" : "\"") << JSON::escape_string(child.first) << "\":" << child.second;
-        first = false;
-      }
-      write_request("completionItem/resolve", ss.str(), [this, last_count](JSON &&result, bool error) {
-        if(!error) {
-          if(last_count != set_tooltip_count)
-            return;
-          auto detail = result.string_or("detail", "");
-          auto documentation = LanguageProtocol::Documentation(result.child_optional("documentation"));
-          if(detail.empty() && documentation.value.empty())
-            return;
-          dispatcher.post([this, last_count, detail = std::move(detail), documentation = std::move(documentation)] {
+      // Prevent several completionItem/resolve requests when no completion item is found from written source (for instance when autocompleting in python : math.___).
+      // This seems to be a bug in Gtk::TreeView::signal_cursor_changed.
+      resolve_completion_item_connection.disconnect();
+      resolve_completion_item_connection = Glib::signal_timeout().connect(
+          [this, last_count, item_object = autocomplete_row.item_object] {
             if(last_count != set_tooltip_count)
-              return;
-            autocomplete->tooltips.clear();
-            auto iter = CompletionDialog::get()->start_mark->get_iter();
-            autocomplete->tooltips.emplace_back(this, iter, iter, [this, detail = std::move(detail), documentation = std::move(documentation)](Tooltip &tooltip) {
-              insert_documentation(this, tooltip, detail, documentation);
+              return false;
+            std::stringstream ss;
+            bool first = true;
+            for(auto &child : item_object->children_or_empty()) {
+              ss << (!first ? ",\"" : "\"") << JSON::escape_string(child.first) << "\":" << child.second;
+              first = false;
+            }
+            write_request("completionItem/resolve", ss.str(), [this, last_count](JSON &&result, bool error) {
+              if(!error) {
+                if(last_count != set_tooltip_count)
+                  return;
+                auto detail = result.string_or("detail", "");
+                auto documentation = LanguageProtocol::Documentation(result.child_optional("documentation"));
+                if(detail.empty() && documentation.value.empty())
+                  return;
+                dispatcher.post([this, last_count, detail = std::move(detail), documentation = std::move(documentation)] {
+                  if(last_count != set_tooltip_count)
+                    return;
+                  autocomplete->tooltips.clear();
+                  auto iter = CompletionDialog::get()->start_mark->get_iter();
+                  autocomplete->tooltips.emplace_back(this, iter, iter, [this, detail = std::move(detail), documentation = std::move(documentation)](Tooltip &tooltip) {
+                    insert_documentation(this, tooltip, detail, documentation);
+                  });
+                  autocomplete->tooltips.show(true);
+                });
+              }
             });
-            autocomplete->tooltips.show(true);
-          });
-        }
-      });
+            return false;
+          },
+          0);
       return nullptr;
     }
     if(autocomplete_row.detail.empty() && autocomplete_row.documentation.value.empty())
@@ -1951,6 +1962,12 @@ void Source::LanguageProtocolView::setup_autocomplete() {
       insert_documentation(this, tooltip, autocomplete_row.detail, autocomplete_row.documentation);
     };
   };
+
+  autocomplete->clear_tooltips = [this] {
+    resolve_completion_item_connection.disconnect();
+    ++set_tooltip_count;
+    autocomplete->tooltips.hide();
+  };
 }
 
 void Source::LanguageProtocolView::update_diagnostics_async(std::vector<LanguageProtocol::Diagnostic> &&diagnostics) {

src/source_language_protocol.hpp

@@ -288,12 +288,13 @@ namespace Source {
     sigc::connection autocomplete_delayed_show_arguments_connection;
     /// Workaround for typescript-language-server.
     /// Used to move cursor forward if no arguments in completed function and if cursor is still inside ()
-    bool autocompete_possibly_no_arguments = false;
+    bool autocomplete_possibly_no_arguments = false;
 
     /// If language supports named parameters, returns the symbol separating the named parameter and value,
     /// for instance '=' for Python
     boost::optional<char> get_named_parameter_symbol();
 
+    sigc::connection resolve_completion_item_connection;
     /// Used when calling completionItem/resolve. Also increased in autocomplete->on_hide.
     std::atomic<size_t> set_tooltip_count = {0};