From 7b422cce4ebc291d5eff723dc0fd4497ab412ed5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Caol=C3=A1n=20McNamara?= <caolanm@redhat.com>
Date: Fri, 4 Dec 2015 14:11:24 +0000
Subject: [PATCH 1/3] gtk3: avoid empty target clipboard warning

Change-Id: Ic6b46eb2c81398f0ab2e7539e5cdb27a508c8893
(cherry picked from commit 66fedc0966ad0c732cada974ea910d7a98beca15)
---
 vcl/unx/gtk3/gtk3gtkinst.cxx | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/vcl/unx/gtk3/gtk3gtkinst.cxx b/vcl/unx/gtk3/gtk3gtkinst.cxx
index 9f15db0..e9210d0 100644
--- a/vcl/unx/gtk3/gtk3gtkinst.cxx
+++ b/vcl/unx/gtk3/gtk3gtkinst.cxx
@@ -572,13 +572,16 @@ void VclGtkClipboard::setContents(
             aGtkTargets.push_back(makeGtkTargetEntry(aFlavor));
         }
 
-        //if there was a previous gtk_clipboard_set_with_data call then
-        //ClipboardClearFunc will be called now
-        GtkClipboard* clipboard = gtk_clipboard_get(m_nSelection);
-        //use with_owner with m_pOwner so we can distinguish in handle_owner_change
-        //if we have gained or lost ownership of the clipboard
-        gtk_clipboard_set_with_owner(clipboard, aGtkTargets.data(), aGtkTargets.size(),
-                                    ClipboardGetFunc, ClipboardClearFunc, G_OBJECT(m_pOwner));
+        if (!aGtkTargets.empty())
+        {
+            //if there was a previous gtk_clipboard_set_with_data call then
+            //ClipboardClearFunc will be called now
+            GtkClipboard* clipboard = gtk_clipboard_get(m_nSelection);
+            //use with_owner with m_pOwner so we can distinguish in handle_owner_change
+            //if we have gained or lost ownership of the clipboard
+            gtk_clipboard_set_with_owner(clipboard, aGtkTargets.data(), aGtkTargets.size(),
+                                        ClipboardGetFunc, ClipboardClearFunc, G_OBJECT(m_pOwner));
+        }
         m_aGtkTargets = aGtkTargets;
     }
 
-- 
2.5.0