3 files changed, 48 insertions, 20 deletions

diff --git a/vcl/unx/kde5/KDE5FilePicker.cxx b/vcl/unx/kde5/KDE5FilePicker.cxx
index dd5f3c0ecc45..be8a6050426e 100644
--- a/vcl/unx/kde5/KDE5FilePicker.cxx
+++ b/vcl/unx/kde5/KDE5FilePicker.cxx
@@ -57,24 +57,6 @@ QString KDE5FilePicker::getDisplayDirectory() const { return _dialog->directoryU
 
 QList<QUrl> KDE5FilePicker::getSelectedFiles() const { return _dialog->selectedUrls(); }
 
-void KDE5FilePicker::appendFilter(const QString& title, const QString& filter)
-{
-    QString t = title;
-    QString f = filter;
-    // '/' need to be escaped else they are assumed to be mime types by kfiledialog
-    //see the docs
-    t.replace("/", "\\/");
-
-    // openoffice gives us filters separated by ';' qt dialogs just want space separated
-    f.replace(";", " ");
-
-    // make sure "*.*" is not used as "all files"
-    f.replace("*.*", "*");
-
-    _filters << QStringLiteral("%1 (%2)").arg(t, f);
-    _titleToFilters[t] = _filters.constLast();
-}
-
 void KDE5FilePicker::setCurrentFilter(const QString& title)
 {
     _currentFilter = _titleToFilters.value(title);
diff --git a/vcl/unx/kde5/KDE5FilePicker.hxx b/vcl/unx/kde5/KDE5FilePicker.hxx
index 675becf0bf68..a5ab496a289b 100644
--- a/vcl/unx/kde5/KDE5FilePicker.hxx
+++ b/vcl/unx/kde5/KDE5FilePicker.hxx
@@ -176,6 +176,9 @@ Q_SIGNALS:
     void setDisplayDirectorySignal(const OUString& rDir);
     void setValueSignal(sal_Int16 nControlId, sal_Int16 nControlAction,
                         const css::uno::Any& rValue);
+    void appendFilterSignal(const OUString& rTitle, const OUString& rFilter);
+    void appendFilterGroupSignal(const OUString& rTitle,
+                                 const css::uno::Sequence<css::beans::StringPair>& rFilters);
 
 private Q_SLOTS:
     void setTitleSlot(const OUString& rTitle) { return setTitle(rTitle); }
@@ -184,6 +187,17 @@ private Q_SLOTS:
     {
         return setValue(nControlAction, nControlAction, rValue);
     }
+
+    void appendFilterSlot(const OUString& rTitle, const OUString& rFilter)
+    {
+        return appendFilter(rTitle, rFilter);
+    }
+
+    void appendFilterGroupSlot(const OUString& rTitle,
+                               const css::uno::Sequence<css::beans::StringPair>& rFilters)
+    {
+        return appendFilterGroup(rTitle, rFilters);
+    }
 };
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/unx/kde5/KDE5FilePicker2.cxx b/vcl/unx/kde5/KDE5FilePicker2.cxx
index ab3cc61191ed..c75c56c21095 100644
--- a/vcl/unx/kde5/KDE5FilePicker2.cxx
+++ b/vcl/unx/kde5/KDE5FilePicker2.cxx
@@ -107,6 +107,10 @@ KDE5FilePicker::KDE5FilePicker(QFileDialog::FileMode eMode)
             Qt::BlockingQueuedConnection);
     connect(this, &KDE5FilePicker::setValueSignal, this, &KDE5FilePicker::setValueSlot,
             Qt::BlockingQueuedConnection);
+    connect(this, &KDE5FilePicker::appendFilterSignal, this, &KDE5FilePicker::appendFilterSlot,
+            Qt::BlockingQueuedConnection);
+    connect(this, &KDE5FilePicker::appendFilterGroupSignal, this,
+            &KDE5FilePicker::appendFilterGroupSlot, Qt::BlockingQueuedConnection);
 
     qApp->installEventFilter(this);
     setMultiSelectionMode(false);
@@ -183,7 +187,29 @@ uno::Sequence<OUString> SAL_CALL KDE5FilePicker::getSelectedFiles()
     return seq;
 }
 
-void SAL_CALL KDE5FilePicker::appendFilter(const OUString& title, const OUString& filter) {}
+void SAL_CALL KDE5FilePicker::appendFilter(const OUString& title, const OUString& filter)
+{
+    if (qApp->thread() != QThread::currentThread())
+    {
+        SolarMutexReleaser aReleaser;
+        return Q_EMIT appendFilterSignal(title, filter);
+    }
+
+    QString t(toQString(title));
+    QString f(toQString(filter));
+    // '/' need to be escaped else they are assumed to be mime types by kfiledialog
+    //see the docs
+    t.replace("/", "\\/");
+
+    // libreoffice separates by filters by ';' qt dialogs by space
+    f.replace(";", " ");
+
+    // make sure "*.*" is not used as "all files"
+    f.replace("*.*", "*");
+
+    _filters << QStringLiteral("%1 (%2)").arg(t, f);
+    _titleToFilters[t] = _filters.constLast();
+}
 
 void SAL_CALL KDE5FilePicker::setCurrentFilter(const OUString& title) {}
 
@@ -193,9 +219,15 @@ OUString SAL_CALL KDE5FilePicker::getCurrentFilter()
     return filter;
 }
 
-void SAL_CALL KDE5FilePicker::appendFilterGroup(const OUString& /*rGroupTitle*/,
+void SAL_CALL KDE5FilePicker::appendFilterGroup(const OUString& rGroupTitle,
                                                 const uno::Sequence<beans::StringPair>& filters)
 {
+    if (qApp->thread() != QThread::currentThread())
+    {
+        SolarMutexReleaser aReleaser;
+        return Q_EMIT appendFilterGroupSignal(rGroupTitle, filters);
+    }
+
     const sal_uInt16 length = filters.getLength();
     for (sal_uInt16 i = 0; i < length; ++i)
     {