USe alternatingRowColors + improve autotest

plugins/messageviewerconfigureplugins/openurlwith/autotests/openurlwithconfigurewidgettest.cpp

@@ -25,4 +25,8 @@ void OpenUrlWithConfigureWidgetTest::shouldHaveDefaultValues()
 
     auto mListWidget = w.findChild<QListWidget *>(QStringLiteral("mListWidget"));
     QVERIFY(mListWidget);
+    QVERIFY(mListWidget->alternatingRowColors());
+    QVERIFY(mListWidget->isSortingEnabled());
+    QCOMPARE(mListWidget->contextMenuPolicy(), Qt::CustomContextMenu);
+    QCOMPARE(mListWidget->selectionMode(), QAbstractItemView::ExtendedSelection);
 }

plugins/messageviewerconfigureplugins/openurlwith/openurlwithconfigurewidget.cpp

@@ -62,6 +62,7 @@ OpenUrlWithConfigureWidget::OpenUrlWithConfigureWidget(QWidget *parent)
     mainLayout->addWidget(mListWidget);
     mListWidget->setContextMenuPolicy(Qt::CustomContextMenu);
     mListWidget->setSelectionMode(QAbstractItemView::ExtendedSelection);
+    mListWidget->setAlternatingRowColors(true);
     mListWidget->setSortingEnabled(true);
     connect(mListWidget, &QListWidget::customContextMenuRequested, this, &OpenUrlWithConfigureWidget::slotCustomContextMenuRequested);
     connect(mListWidget, &QListWidget::itemDoubleClicked, this, &OpenUrlWithConfigureWidget::slotEditRule);

plugins/messageviewerplugins/externalscriptplugin/autotests/viewerpluginexternalconfigurewidgettest.cpp

@@ -31,6 +31,7 @@ void ViewerPluginExternalConfigureWidgetTest::shouldHaveDefaultValue()
     auto mListExternal = w.findChild<QListWidget *>(QStringLiteral("listexternal"));
     QVERIFY(mListExternal);
     QCOMPARE(mListExternal->selectionMode(), QAbstractItemView::SingleSelection);
+    QVERIFY(mListExternal->alternatingRowColors());
 
     auto mAddScript = w.findChild<QPushButton *>(QStringLiteral("addscript"));
     QVERIFY(mAddScript);

plugins/messageviewerplugins/externalscriptplugin/configuredialog/viewerpluginexternalconfigurewidget.cpp

@@ -73,6 +73,7 @@ ViewerPluginExternalConfigureWidget::ViewerPluginExternalConfigureWidget(QWidget
 
     mListExternal->setObjectName(QStringLiteral("listexternal"));
     mListExternal->setSelectionMode(QAbstractItemView::SingleSelection);
+    mListExternal->setAlternatingRowColors(true);
     listLayout->addWidget(mListExternal);
     connect(mListExternal, &QListWidget::itemSelectionChanged, this, &ViewerPluginExternalConfigureWidget::updateButtons);
     connect(mListExternal, &QListWidget::itemDoubleClicked, this, &ViewerPluginExternalConfigureWidget::slotDoubleClicked);