Polish the XML bookmarks examples

- Use Qt 5 connect syntax.
- Streamline code, remove unused members.
- Add a context menu for copying and opening the URLs.
- Add const to XML code.
- In the XML code, show the use of QStringLiteral in static inline
  functions to create strings versus QLatin1String in comparison
  overloads to avoid allocating strings from const char * literals.

Change-Id: Ib5e62ca188e271ffe01996dff3c9ea8e0b60739a
Reviewed-by: Topi Reiniö <topi.reinio@qt.io>

1 files changed, 3 insertions, 3 deletions

diff --git a/examples/xml/streambookmarks/xbelwriter.h b/examples/xml/streambookmarks/xbelwriter.h
index b15bf60e31..465d8f0dc4 100644
--- a/examples/xml/streambookmarks/xbelwriter.h
+++ b/examples/xml/streambookmarks/xbelwriter.h
@@ -62,13 +62,13 @@ QT_END_NAMESPACE
 class XbelWriter
 {
 public:
-    XbelWriter(QTreeWidget *treeWidget);
+    explicit XbelWriter(const QTreeWidget *treeWidget);
     bool writeFile(QIODevice *device);
 
 private:
-    void writeItem(QTreeWidgetItem *item);
+    void writeItem(const QTreeWidgetItem *item);
     QXmlStreamWriter xml;
-    QTreeWidget *treeWidget;
+    const QTreeWidget *treeWidget;
 };
 //! [0]