From a4a4012255e65fadc62dcca6985f7e1f25d852cf Mon Sep 17 00:00:00 2001
From: Abs62 <ottomann@yandex.ru>
Date: Fri, 8 Sep 2017 16:43:41 +0300
Subject: [PATCH] A little refactor for show/hide completion list in the
 translate box

---
 translatebox.cc | 11 +++++++++--
 translatebox.hh |  2 ++
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/translatebox.cc b/translatebox.cc
index 19f3042d..427a3210 100644
--- a/translatebox.cc
+++ b/translatebox.cc
@@ -41,7 +41,8 @@ CompletionList::CompletionList(TranslateBox * parent) : WordList(parent),
 bool CompletionList::eventFilter( QObject * obj, QEvent * ev )
 {
   // when the main window is moved or resized, hide the word list suggestions
-  if ( ev->type() == QEvent::Move || ev->type() == QEvent::Resize )
+  if ( obj != this && !isAncestorOf( qobject_cast< QWidget * >( obj ) )
+       && ( ev->type() == QEvent::Move || ev->type() == QEvent::Resize ) )
   {
     translateBox->setPopupEnabled( false );
     return false;
@@ -244,6 +245,13 @@ void TranslateBox::showPopup()
   // completer->setCompletionPrefix( m_fileLineEdit->text() );
   // qDebug() << "COMPLETION:" << completer->currentCompletion();
 
+  // Don't allow recursive call
+  if( translateBoxMutex.tryLock() )
+    translateBoxMutex.unlock();
+  else
+    return;
+  Mutex::Lock _( translateBoxMutex );
+
   if (translate_line->text().trimmed().isEmpty() || word_list->count() == 0)
   {
     // nothing to show
@@ -252,7 +260,6 @@ void TranslateBox::showPopup()
       word_list->hide();
       translate_line->setFocus();
     }
-
     return;
   }
 
diff --git a/translatebox.hh b/translatebox.hh
index 9b87830c..6b823216 100644
--- a/translatebox.hh
+++ b/translatebox.hh
@@ -6,6 +6,7 @@
 
 #include "extlineedit.hh"
 #include "wordlist.hh"
+#include "mutex.hh"
 
 #include <QWidget>
 #include <QListWidget>
@@ -63,6 +64,7 @@ private:
   CompletionList * word_list;
   ExtLineEdit * translate_line;
   bool m_popupEnabled;
+  Mutex translateBoxMutex;
   // QCompleter * completer; // disabled for now
 };