Add action for toggling Auto FIM

Sometimes it's a bit annoying to get completions when moving though the
source code.

"llama.vim" has this by default, with auto fim enabled only in "insert
mode".

The default keyboard shortcut is "Ctrl+Shift+G".

Author: cristianadam

llamaconstants.h

@@ -6,6 +6,7 @@ namespace LlamaCpp::Internal::Constants {
     const char LLAMACPP_USE_GLOBAL_SETTINGS[] = "LlamaCpp.UseGlobalSettings";
 
     const char LLAMACPP_TOGGLE_ENABLE_DISABLE[] = "LlamaCpp.ToggleEnableDisable";
+    const char LLAMACPP_TOGGLE_AUTOFIM[] = "LlamaCpp.ToggleAutoFIM";
     const char LLAMACPP_REQUEST_SUGGESTION[] = "LlamaCpp.RequestSuggestion";
 
     const char LLAMACPP_GENERAL_OPTIONS_ID[] = "LlamaCpp.General";

llamaplugin.cpp

@@ -123,13 +123,34 @@ void LlamaPlugin::initialize()
         settings().apply();
     });
 
+    ActionBuilder toggleAutoFimAction(this, Constants::LLAMACPP_TOGGLE_AUTOFIM);
+    toggleAutoFimAction.setText(Tr::tr("Toggle Auto FIM"));
+    toggleAutoFimAction.setCheckable(true);
+    toggleAutoFimAction.setChecked(settings().autoFim());
+    toggleAutoFimAction.addOnTriggered(this, [this](bool checked) {
+        qCInfo(llamaLog) << "Toggle Auto FIM" << checked;
+
+        settings().autoFim.setValue(checked);
+        settings().apply();
+
+        if (checked) {
+            // Show the llama.cpp text hint
+            fim(-1, -1, false);
+        } else {
+            hideCompletionHint();
+        }
+    });
+    toggleAutoFimAction.setDefaultKeySequence(Tr::tr("Ctrl+Shift+G"));
+
     QAction *toggleAct = toggleAction.contextAction();
     QAction *requestAct = requestAction.contextAction();
-    auto updateActions = [toggleAct, requestAct] {
+    QAction *toogleAutoFimAct = toggleAutoFimAction.contextAction();
+    auto updateActions = [toggleAct, requestAct, toogleAutoFimAct] {
         const bool enabled = settings().enableLlamaCpp();
         toggleAct->setToolTip(enabled ? Tr::tr("Disable llama.cpp.") : Tr::tr("Enable llama.cpp."));
         toggleAct->setChecked(enabled);
         requestAct->setEnabled(enabled);
+        toogleAutoFimAct->setEnabled(enabled);
     };
 
     settings().enableLlamaCpp.addOnChanged(this, updateActions);