Qt Designer: Fix the widget box tooltip display

The widget box code looked the widgets up in the database by the
widget box name which is usually a text like "Line Edit". Rearrange
the code to search by class name.

Task-number: QTBUG-102028
Change-Id: Iabfddd14d49344ef850aaceefee3c53e95adafb2
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>
(cherry picked from commit f3131ec7e7a6bd451706155e349306247b0e70c9)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

1 files changed, 12 insertions, 12 deletions

diff --git a/src/designer/src/components/widgetbox/widgetboxcategorylistview.cpp b/src/designer/src/components/widgetbox/widgetboxcategorylistview.cpp
index 2f5b7f536..65a697a5e 100644
--- a/src/designer/src/components/widgetbox/widgetboxcategorylistview.cpp
+++ b/src/designer/src/components/widgetbox/widgetboxcategorylistview.cpp
@@ -200,21 +200,21 @@ bool WidgetBoxCategoryModel::removeCustomWidgets()
 
 void WidgetBoxCategoryModel::addWidget(const QDesignerWidgetBoxInterface::Widget &widget, const QIcon &icon,bool editable)
 {
-    // build item. Filter on name + class name if it is different and not a layout.
+    static const QRegularExpression classNameRegExp(QStringLiteral("<widget +class *= *\"([^\"]+)\""));
+    Q_ASSERT(classNameRegExp.isValid());
+    const auto match = classNameRegExp.match(widget.domXml());
+    const QString className = match.hasMatch() ? match.captured(1) : QString{};
+
+    // Filter on name + class name if it is different and not a layout.
     QString filter = widget.name();
-    if (!filter.contains(QStringLiteral("Layout"))) {
-        static const QRegularExpression classNameRegExp(QStringLiteral("<widget +class *= *\"([^\"]+)\""));
-        Q_ASSERT(classNameRegExp.isValid());
-        const QRegularExpressionMatch match = classNameRegExp.match(widget.domXml());
-        if (match.hasMatch()) {
-            const QString className = match.captured(1);
-            if (!filter.contains(className))
-                filter += className;
-        }
-    }
+    if (!className.isEmpty() && !filter.contains(QStringLiteral("Layout")) && !filter.contains(className))
+        filter += className;
+
     WidgetBoxCategoryEntry item(widget, filter, icon, editable);
     const QDesignerWidgetDataBaseInterface *db = m_core->widgetDataBase();
-    const int dbIndex = db->indexOfClassName(widget.name());
+    int dbIndex = className.isEmpty() ? -1 : db->indexOfClassName(className);
+    if (dbIndex == -1)
+        dbIndex = db->indexOfClassName(widget.name());
     if (dbIndex != -1) {
         const QDesignerWidgetDataBaseItemInterface *dbItem = db->item(dbIndex);
         const QString toolTip = dbItem->toolTip();