[mer-general] Lipstick patch for fixing clipboard not updating correctly (getting stucked)

[Leszek Lesner]

Hi,

I hope this is the correct way to address an issue I have with lipstick
on SailfishOS for quite a while (basically since the first version).
The problem is a stucked clipboard that does not update its contents
anymore. A lipstick restart fixes the issue.
The other method to "unstuck" the clipboard would be to execute an
application which uses QClipboard::clear() method and then executes the
copy like setText() or setMimeData().
Fingerterm for example uses that copy method and is able to unstuck the
clipboard in lipstick.

I don't know where the actual bug now is (it might be the wayland
backend but I honestly don't know much about it and can only speculate
here)
but I think as a workaround lipstick should also clear the clipboard
before executing setMimeData.

I wrote a little patch against master branch of lipstick that should be
worth testing (see attachment)

Greetings
Leszek Lesner

diff --git a/src/compositor/lipstickcompositor.cpp b/src/compositor/lipstickcompositor.cpp
index 0f5d370..fa1d198 100644
--- a/src/compositor/lipstickcompositor.cpp
+++ b/src/compositor/lipstickcompositor.cpp
@@ -211,6 +211,7 @@ void LipstickCompositor::retainedSelectionReceived(QMimeData *mimeData)
     foreach (const QString &format, mimeData->formats())
         m_retainedSelection->setData(format, mimeData->data(format));
 
+    QGuiApplication::clipboard()->clear();
     QGuiApplication::clipboard()->setMimeData(m_retainedSelection.data());
 }