Added info messages when no action happens from menu items

src/project.cc

@@ -479,8 +479,10 @@ void Project::Clang::debug_backtrace() {
     auto iter=view->get_iter_for_dialog();
     view->selection_dialog=std::make_unique<SelectionDialog>(*view, view->get_buffer()->create_mark(iter), true, true);
     auto rows=std::make_shared<std::unordered_map<std::string, Debug::LLDB::Frame> >();
-    if(backtrace.size()==0)
+    if(backtrace.size()==0) {
+      Info::get().print("No backtrace found");
       return;
+    }
     
     bool cursor_set=false;
     for(auto &frame: backtrace) {
@@ -529,8 +531,10 @@ void Project::Clang::debug_show_variables() {
     auto iter=view->get_iter_for_dialog();
     view->selection_dialog=std::make_unique<SelectionDialog>(*view, view->get_buffer()->create_mark(iter), true, true);
     auto rows=std::make_shared<std::unordered_map<std::string, Debug::LLDB::Variable> >();
-    if(variables.size()==0)
+    if(variables.size()==0) {
+      Info::get().print("No variables found");
       return;
+    }
     
     for(auto &variable: variables) {
       std::string row="#"+std::to_string(variable.thread_index_id)+":#"+std::to_string(variable.frame_index)+":"+variable.file_path.filename().string()+":"+std::to_string(variable.line_nr)+" - <b>"+Glib::Markup::escape_text(variable.name)+"</b>";

src/source_clang.cc

@@ -823,7 +823,10 @@ Source::ClangViewRefactor::ClangViewRefactor(const boost::filesystem::path &file
       Info::get().print("Buffer is parsing");
       return std::string();
     }
-    return get_identifier().spelling;
+    auto identifier=get_identifier();
+    if(identifier.spelling.empty())
+      Info::get().print("No symbol found at current cursor location");
+    return identifier.spelling;
   };
   
   rename_similar_tokens=[this](const std::vector<Source::View*> &views, const std::string &text) {
@@ -918,6 +921,7 @@ Source::ClangViewRefactor::ClangViewRefactor(const boost::filesystem::path &file
       auto offset=source_location.get_offset();
       return Offset(offset.line-1, offset.index-1, source_location.get_path());
     }
+    Info::get().print("No declaration found");
     return Offset();
   };
   
@@ -989,9 +993,8 @@ Source::ClangViewRefactor::ClangViewRefactor(const boost::filesystem::path &file
         }
         return locations;
       }
-      
-      Info::get().print("Could not find implementation");
     }
+    Info::get().print("No implementation found");
     return locations;
   };
   
@@ -1046,7 +1049,8 @@ Source::ClangViewRefactor::ClangViewRefactor(const boost::filesystem::path &file
         }
       }
     }
-    
+    if(usages.empty())
+      Info::get().print("No symbol found at current cursor location");
     return usages;
   };
   
@@ -1111,6 +1115,7 @@ Source::ClangViewRefactor::ClangViewRefactor(const boost::filesystem::path &file
         }
       }
     }
+    Info::get().print("No method found at current cursor location");
     return std::string();
   };
   
@@ -1178,6 +1183,8 @@ Source::ClangViewRefactor::ClangViewRefactor(const boost::filesystem::path &file
         }
       }
     }
+    if(methods.empty())
+      Info::get().print("No methods found in current buffer");
     return methods;
   };
   
@@ -1279,6 +1286,8 @@ Source::ClangViewRefactor::ClangViewRefactor(const boost::filesystem::path &file
         }
       }
     }
+    if(data.empty())
+      Info::get().print("No symbol found at current cursor location");
     return data;
   };
   
@@ -1295,7 +1304,9 @@ Source::ClangViewRefactor::ClangViewRefactor(const boost::filesystem::path &file
         return;
       }
     }
-    if(diagnostic_offsets.size()>0) {
+    if(diagnostic_offsets.size()==0)
+      Info::get().print("No diagnostics found in current buffer");
+    else {
       auto iter=get_buffer()->get_iter_at_offset(*diagnostic_offsets.begin());
       get_buffer()->place_cursor(iter);
       scroll_to(get_buffer()->get_insert(), 0.0, 1.0, 0.5);
@@ -1307,6 +1318,8 @@ Source::ClangViewRefactor::ClangViewRefactor(const boost::filesystem::path &file
       Info::get().print("Buffer is parsing");
       return std::vector<FixIt>();
     }
+    if(fix_its.empty())
+      Info::get().print("No fix-its found in current buffer");
     return fix_its;
   };
 }

src/source_diff.cc

@@ -2,6 +2,7 @@
 #include "config.h"
 #include "terminal.h"
 #include "filesystem.h"
+#include "info.h"
 #include <boost/version.hpp>
 
 namespace sigc {
@@ -284,18 +285,23 @@ void Source::DiffView::git_goto_next_diff() {
       wrapped=true;
     }
   }
+  Info::get().print("No changes found in current buffer");
 }
 
 std::string Source::DiffView::git_get_diff_details() {
-  if(!diff)
-    return std::string();
+  std::string details;
+  if(diff) {
     auto line_nr=get_buffer()->get_insert()->get_iter().get_line();
     auto iter=get_buffer()->get_iter_at_line(line_nr);
     if(iter.has_tag(renderer->tag_removed_above))
       --line_nr;
     std::unique_lock<std::mutex> lock(parse_mutex);
     parse_buffer=get_buffer()->get_text();
-  return diff->get_details(parse_buffer.raw(), line_nr);
+    details=diff->get_details(parse_buffer.raw(), line_nr);
+  }
+  if(details.empty())
+    Info::get().print("No changes found at current line");
+  return details;
 }
 
 ///Return repository diff instance. Throws exception on error

src/source_spellcheck.cc

@@ -1,5 +1,6 @@
 #include "source_spellcheck.h"
 #include "config.h"
+#include "info.h"
 #include <iostream>
 
 namespace sigc {
@@ -324,6 +325,7 @@ void Source::SpellCheckView::goto_next_spellcheck_error() {
       wrapped=true;
     }
   }
+  Info::get().print("No spelling errors found in current buffer");
 }
 
 bool Source::SpellCheckView::is_code_iter(const Gtk::TextIter &iter) {

src/window.cc

@@ -438,10 +438,8 @@ void Window::set_menu_actions() {
   menu.add_action("source_git_show_diff", [this]() {
     if(auto view=Notebook::get().get_current_view()) {
       auto diff_details=view->git_get_diff_details();
-      if(diff_details.empty()) {
-        Info::get().print("Could not find any changes at the current line");
+      if(diff_details.empty())
         return;
-      }
       std::string postfix;
       if(diff_details.size()>2) {
         size_t pos=diff_details.find("@@", 2);
@@ -483,8 +481,10 @@ void Window::set_menu_actions() {
       auto path=std::move(pair.first);
       auto stream=std::move(pair.second);
       stream->seekg(0, std::ios::end);
-      if(stream->tellg()==0)
+      if(stream->tellg()==0) {
+        Info::get().print("No symbols found in current project");
         return;
+      }
       stream->seekg(0, std::ios::beg);
       
       auto dialog_iter=view->get_iter_for_dialog();