QWaylandMimeData: Return converted MIME types in formats(), too

This brings it in line with QXcbDropData where formats_sys()
returns the format from mimeAtomToString (which contains
the special-case for text/x-moz-url).

Furthermore, in hasFormat_sys() just check formats() to avoid
yet another place where a special-case is added, again in line
with QXcbDropData.

Pick-to: 6.8
Change-Id: Ia2b7c149b35110ff9dd8deed94c3378afb047ac1
Reviewed-by: David Edmundson <davidedmundson@kde.org>

src/plugins/platforms/wayland/qwaylanddataoffer.cpp

@@ -17,6 +17,11 @@ QT_BEGIN_NAMESPACE
 
 namespace QtWaylandClient {
 
+static QString plainText()
+{
+    return QStringLiteral("text/plain");
+}
+
 static QString utf8Text()
 {
     return QStringLiteral("text/plain;charset=utf-8");
@@ -163,21 +168,29 @@ void QWaylandMimeData::appendFormat(const QString &mimeType)
 
 bool QWaylandMimeData::hasFormat_sys(const QString &mimeType) const
 {
-    if (m_types.contains(mimeType))
+    return formats().contains(mimeType);
-        return true;
-
-    if (mimeType == QStringLiteral("text/plain") && m_types.contains(utf8Text()))
-        return true;
-
-    if (mimeType == uriList() && m_types.contains(mozUrl()))
-        return true;
-
-    return false;
 }
 
 QStringList QWaylandMimeData::formats_sys() const
 {
-    return m_types;
+    QStringList types;
+    types.reserve(m_types.size());
+
+    for (const QString &type : m_types) {
+        QString mime = type;
+
+        if (mime == utf8Text()) {
+            mime = plainText();
+        } else if (mime == mozUrl()) {
+            mime = uriList();
+        }
+
+        if (!types.contains(mime)) {
+            types << mime;
+        }
+    }
+
+    return types;
 }
 
 QVariant QWaylandMimeData::retrieveData_sys(const QString &mimeType, QMetaType type) const
@@ -191,7 +204,7 @@ QVariant QWaylandMimeData::retrieveData_sys(const QString &mimeType, QMetaType t
     QString mime = mimeType;
 
     if (!m_types.contains(mimeType)) {
-        if (mimeType == QStringLiteral("text/plain") && m_types.contains(utf8Text()))
+        if (mimeType == plainText() && m_types.contains(utf8Text()))
             mime = utf8Text();
         else if (mimeType == uriList() && m_types.contains(mozUrl()))
             mime = mozUrl();

tests/auto/wayland/primaryselectionv1/tst_primaryselectionv1.cpp

@@ -352,7 +352,7 @@ void tst_primaryselectionv1::pasteUtf8()
         pointer()->sendButton(client(), BTN_MIDDLE, 0);
         pointer()->sendFrame(client());
     });
-    QTRY_COMPARE(window.m_formats, QStringList({"text/plain", "text/plain;charset=utf-8"}));
+    QTRY_COMPARE(window.m_formats, QStringList({"text/plain"}));
     QTRY_COMPARE(window.m_text, "face with tears of joy: 😂");
 }