Use a 100ms timer for cursor movement fim triggering

This way if you just navigate in the source code up and down, it won't
feel laggish.

When stopping then the fim will be triggered.

Author: cristianadam

llamaplugin.cpp

@@ -54,14 +54,24 @@ QRegularExpression LlamaPlugin::s_whitespace_regex("^\\s*$");
 
 LlamaPlugin::LlamaPlugin()
     : m_ringUpdateTimer(new QTimer(this))
+    , m_positionChangedTimer(new QTimer(this))
     , m_networkManager(new QNetworkAccessManager(this))
 {
     connect(m_ringUpdateTimer, &QTimer::timeout, this, &LlamaPlugin::ring_update);
+    m_positionChangedTimer->setSingleShot(true);
+    connect(m_positionChangedTimer,
+            &QTimer::timeout,
+            this,
+            &LlamaPlugin::handleCursorPositionChangedDelayed);
 }
 
 LlamaPlugin::~LlamaPlugin()
 {
     disconnect(m_ringUpdateTimer, &QTimer::timeout, this, &LlamaPlugin::ring_update);
+    disconnect(m_positionChangedTimer,
+               &QTimer::timeout,
+               this,
+               &LlamaPlugin::handleCursorPositionChangedDelayed);
 }
 
 FilePath LlamaPlugin::getTranslationFilePath(const QString &translationFile)
@@ -232,11 +242,18 @@ void LlamaPlugin::handleEditorAboutToClose(Core::IEditor *editor)
 
 void LlamaPlugin::handleCursorPositionChanged()
 {
-    TextEditorWidget *editor = TextEditorWidget::currentTextEditorWidget();
-    if (!editor || !settings().enableLlamaCpp())
+    if (!settings().enableLlamaCpp())
         return;
 
     hideCompletionHint();
+    m_positionChangedTimer->start(100);
+}
+
+void LlamaPlugin::handleCursorPositionChangedDelayed()
+{
+    TextEditorWidget *editor = TextEditorWidget::currentTextEditorWidget();
+    if (!editor)
+        return;
 
     QTextCursor cursor = editor->textCursor();
     int pos_x = cursor.positionInBlock();

llamaplugin.h

@@ -43,6 +43,7 @@ private slots:
     void handleCurrentEditorChanged(Core::IEditor *editor);
     void handleEditorAboutToClose(Core::IEditor *editor);
     void handleCursorPositionChanged();
+    void handleCursorPositionChangedDelayed();
     void handleDocumentSaved(Core::IDocument *document);
 
 private:
@@ -101,6 +102,7 @@ private slots:
     // State tracking
     QPoint m_lastPos;
     QTimer *m_ringUpdateTimer;
+    QTimer *m_positionChangedTimer;
     QNetworkAccessManager *m_networkManager;
     std::unique_ptr<QNetworkReply> m_fimReply;