startcenter: Hide template toggle button if no templates

Change-Id: I9c6f2058e67990156a4be928449c6ebe6614e486
Reviewed-on: https://gerrit.libreoffice.org/5913Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

include/sfx2/templatelocalview.hxx

@@ -37,6 +37,8 @@ public:
     // Fill view with template folders thumbnails
     virtual void Populate ();
 
+    bool HasUnfilteredItems(FILTER_APPLICATION App);
+
     virtual void reload ();
 
     virtual void showRootRegion ();

sfx2/source/control/templatelocalview.cxx

@@ -59,6 +59,22 @@ TemplateLocalView::~TemplateLocalView()
     delete mpDocTemplates;
 }
 
+bool TemplateLocalView::HasUnfilteredItems(FILTER_APPLICATION App)
+{
+    ViewFilter_Application aFilter(App);
+    bool bFound = false;
+    for (size_t i = 0; !bFound && i < maRegions.size(); ++i)
+    {
+        TemplateContainerItem *pFolderItem = maRegions[i];
+
+        for (size_t j = 0; !bFound && j < pFolderItem->maTemplates.size(); ++j)
+        {
+            bFound = aFilter.isValid(pFolderItem->maTemplates[j].aPath);
+        }
+    }
+    return bFound;
+}
+
 void TemplateLocalView::Populate ()
 {
     for (size_t i = 0; i < maRegions.size(); ++i)

sfx2/source/dialog/backingwindow.cxx

@@ -369,11 +369,19 @@ void BackingWindow::setupTemplateView( TemplateLocalView* pView, FILTER_APPLICAT
     pView->showRootRegion();
     pView->setOpenTemplateHdl( LINK( this, BackingWindow, OpenTemplateHdl ) );
 
-    // setup buttons
-    pRecentButton->SetClickHdl( LINK( this, BackingWindow, RecentTemplateToggleHdl ) );
-    pTemplateButton->SetClickHdl( LINK( this, BackingWindow, RecentTemplateToggleHdl ) );
+    if( pView->HasUnfilteredItems(eFilter) )
+    {
+        // setup buttons
+        pRecentButton->SetClickHdl( LINK( this, BackingWindow, RecentTemplateToggleHdl ) );
+        pTemplateButton->SetClickHdl( LINK( this, BackingWindow, RecentTemplateToggleHdl ) );
 
-    pRecentButton->Hide();  // hidden by default
+        pRecentButton->Hide();  // hidden by default
+    }
+    else // no templates, hide toggle button
+    {
+        pTemplateButton->Hide();
+        pRecentButton->Hide();
+    }
 }
 void BackingWindow::Paint( const Rectangle& )
 {