Qt: fix enter event in addons manager

Hitting ENTER in addon manager search field no longer makes tab content disappear

Closes #15162, #14553
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

modules/gui/qt4/dialogs/plugins.cpp

@@ -489,6 +489,16 @@ AddonsTab::~AddonsTab()
     delete spinnerAnimation;
 }
 
+// Do not close on ESC or ENTER
+void AddonsTab::keyPressEvent( QKeyEvent *keyEvent )
+{
+    if( keyEvent->key() == Qt::Key_Return ||
+        keyEvent->key() == Qt::Key_Enter )
+        keyEvent->accept();
+    else
+        keyEvent->ignore();
+}
+
 bool AddonsTab::eventFilter( QObject *obj, QEvent *event )
 {
     if ( obj != addonsView->viewport() )

modules/gui/qt4/dialogs/plugins.hpp

@@ -130,6 +130,9 @@ class AddonsTab : public QVLCFrame
     Q_OBJECT
     friend class PluginDialog;
 
+protected:
+    void keyPressEvent( QKeyEvent *keyEvent ) Q_DECL_OVERRIDE;
+
 private slots:
     void moreInformation();
     void installChecked( int );