tdf#130857 qt weld: Implement QtInstanceEntry::set_message_type

For weld::EntryMessageType::Warning and
weld::EntryMessageType::Error, set a warning/error
icon from the icon theme at the end of the entry using
QLineEdit::addAction.

The GTK implementation (GtkInstanceEntry::set_message_type)
also does this. That one also sets a background color, which
the Qt implementation doesn't do for now.

This method is used e.g. by the "File" -> "Properties"
-> "Security" -> "Protect..." dialog in Writer, which
will be declared as supported in an upcoming commit.

Change-Id: I96b81e28faf82f17e33195cfa981c82522f59b98
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/176018
Tested-by: Jenkins
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>

1 files changed, 27 insertions, 2 deletions

diff --git a/vcl/qt5/QtInstanceEntry.cxx b/vcl/qt5/QtInstanceEntry.cxx
index f1001cc834db..46f9744138d4 100644
--- a/vcl/qt5/QtInstanceEntry.cxx
+++ b/vcl/qt5/QtInstanceEntry.cxx
@@ -12,6 +12,8 @@
 
 #include <vcl/qt/QtUtils.hxx>
 
+#include <QtGui/QIcon>
+
 QtInstanceEntry::QtInstanceEntry(QLineEdit* pLineEdit)
     : QtInstanceWidget(pLineEdit)
     , m_pLineEdit(pLineEdit)
@@ -114,9 +116,32 @@ bool QtInstanceEntry::get_editable() const
     return bEditable;
 }
 
-void QtInstanceEntry::set_message_type(weld::EntryMessageType)
+void QtInstanceEntry::set_message_type(weld::EntryMessageType eType)
 {
-    assert(false && "Not implemented yet");
+    SolarMutexGuard g;
+
+    GetQtInstance().RunInMainThread([&] {
+        for (QAction* pAction : m_pLineEdit->actions())
+            m_pLineEdit->removeAction(pAction);
+
+        switch (eType)
+        {
+            case weld::EntryMessageType::Normal:
+                // don't do anything special
+                return;
+            case weld::EntryMessageType::Warning:
+                m_pLineEdit->addAction(QIcon::fromTheme("dialog-warning"),
+                                       QLineEdit::TrailingPosition);
+                return;
+            case weld::EntryMessageType::Error:
+                m_pLineEdit->addAction(QIcon::fromTheme("dialog-error"),
+                                       QLineEdit::TrailingPosition);
+                return;
+            default:
+                assert(false && "Unknown EntryMessageType");
+                return;
+        }
+    });
 }
 
 void QtInstanceEntry::set_placeholder_text(const OUString& rText)