fdo#72187 Implement KDE4 picker notifications

This notifies the XFilePickerListener of filter changes and file
selection changes.

Change-Id: I749c5f7420f020a3a2fbb764acb5c45d40972cf1

vcl/unx/kde4/KDE4FilePicker.cxx

@@ -189,7 +189,12 @@ KDE4FilePicker::KDE4FilePicker( const uno::Reference<uno::XComponentContext>& )
 
     // Destructor proxy
     connect( this, SIGNAL( cleanupProxySignal() ), this, SLOT( cleanupProxy() ), Qt::BlockingQueuedConnection );
+
     connect( this, SIGNAL( checkProtocolSignal() ), this, SLOT( checkProtocol() ), Qt::BlockingQueuedConnection );
+
+    // XFilePickerListener notifications
+    connect( _dialog, SIGNAL( filterChanged(const QString&) ), this, SLOT( filterChanged(const QString&) ));
+    connect( _dialog, SIGNAL( selectionChanged() ), this, SLOT( selectionChanged() ));
 }
 
 KDE4FilePicker::~KDE4FilePicker()
@@ -783,6 +788,23 @@ void KDE4FilePicker::checkProtocol()
         KMessageBox::error( _dialog, KIO::buildErrorString( KIO::ERR_UNSUPPORTED_PROTOCOL, _dialog->baseUrl().protocol()));
 }
 
+void KDE4FilePicker::filterChanged(const QString &)
+{
+    FilePickerEvent aEvent;
+    aEvent.ElementId = LISTBOX_FILTER;
+    OSL_TRACE( "filter changed" );
+    if (m_xListener.is())
+        m_xListener->controlStateChanged( aEvent );
+}
+
+void KDE4FilePicker::selectionChanged()
+{
+    FilePickerEvent aEvent;
+    OSL_TRACE( "file selection changed" );
+    if (m_xListener.is())
+        m_xListener->fileSelectionChanged( aEvent );
+}
+
 #include "KDE4FilePicker.moc"
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

vcl/unx/kde4/KDE4FilePicker.hxx

@@ -230,6 +230,10 @@ private Q_SLOTS:
     void cleanupProxy();
     void checkProtocol();
 
+    // emit XFilePickerListener controlStateChanged event
+    void filterChanged(const QString &filter);
+    // emit XFilePickerListener fileSelectionChanged event
+    void selectionChanged();
 };
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */