[LocationCompleter] Force updates of inline domain completer

Model for inline domain completion is updated asynchronously, so it is
needed to force the update of completer.

This was last regression of completer after switch to threaded searching
in history/bookmarks.

src/lib/navigation/completer/locationcompleter.cpp

@@ -87,7 +87,7 @@ void LocationCompleter::refreshJobFinished()
     LocationCompleterRefreshJob* job = qobject_cast<LocationCompleterRefreshJob*>(sender());
     Q_ASSERT(job);
 
-    // Don't show result of older jobs
+    // Don't show results of older jobs
     // Also don't open the popup again when it was already closed
     if (job->timestamp() > m_lastRefreshTimestamp && !m_popupClosed) {
         s_model->setCompletions(job->completions());

src/lib/navigation/locationbar.cpp

@@ -50,6 +50,7 @@ LocationBar::LocationBar(BrowserWindow* window)
     , m_pasteAndGoAction(0)
     , m_clearAction(0)
     , m_holdingAlt(false)
+    , m_backspacePressed(false)
     , m_loadProgress(0)
     , m_progressVisible(false)
 {
@@ -161,6 +162,11 @@ void LocationBar::clearCompletion()
 void LocationBar::showDomainCompletion(const QString &completion)
 {
     m_domainCompleterModel->setStringList(QStringList() << completion);
+
+    // We need to manually force the completion because model is updated asynchronously
+    // But don't force the completion when backspace was pressed!
+    if (!m_backspacePressed)
+        completer()->complete();
 }
 
 LoadRequest LocationBar::createLoadRequest() const
@@ -473,6 +479,10 @@ void LocationBar::keyPressEvent(QKeyEvent* event)
         m_holdingAlt = true;
         break;
 
+    case Qt::Key_Backspace:
+        m_backspacePressed = true;
+        break;
+
     case Qt::Key_Return:
     case Qt::Key_Enter:
         switch (event->modifiers()) {
@@ -514,6 +524,7 @@ void LocationBar::keyPressEvent(QKeyEvent* event)
 
     default:
         m_holdingAlt = false;
+        m_backspacePressed = false;
     }
 
     LineEdit::keyPressEvent(event);

src/lib/navigation/locationbar.h

@@ -108,6 +108,7 @@ private:
 
     bool m_rssIconVisible;
     bool m_holdingAlt;
+    bool m_backspacePressed;
 
     int m_loadProgress;
     bool m_progressVisible;