Doc: Make snippets Qt Gui compilable - textblock-fragments

Task-number: QTBUG-81486
Change-Id: I3a6ee6ef744abb694d1cc7ef409f8bb584854395
Reviewed-by: Topi Reiniö <topi.reinio@qt.io>

src/gui/doc/snippets/snippets.pro

@@ -10,6 +10,7 @@ contains(QT_BUILD_PARTS, tests) {
         droparea \
         qfontdatabase \
         textblock-formats \
+        textblock-fragments \
         textdocument-blocks \
         textdocument-charformats \
         textdocument-css \

src/gui/doc/snippets/textblock-fragments/textblock-fragments.pro

@@ -1,6 +1,8 @@
-QT          += xml
-HEADERS     = mainwindow.h \
-              xmlwriter.h
-SOURCES     = main.cpp \
-              mainwindow.cpp \
-              xmlwriter.cpp
+TEMPLATE = lib
+TARGET = gui_snippets_textblock_fragments
+QT += core gui widgets xml
+
+HEADERS = \
+    xmlwriter.h
+SOURCES = \
+    xmlwriter.cpp

src/gui/doc/snippets/textblock-fragments/xmlwriter.cpp

@@ -47,11 +47,10 @@
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/
-
-#include <QtGui>
-
 #include "xmlwriter.h"
 
+#include <QTextDocument>
+
 QDomDocument *XmlWriter::toXml()
 {
     QDomImplementation implementation;
@@ -120,8 +119,15 @@ void XmlWriter::readFragment(const QTextBlock &currentBlock,
 
 void XmlWriter::processBlock(const QTextBlock &currentBlock)
 {
+   // Dummy use of specified parameter currentBlock
+   QTextBlock localBlock;
+   localBlock = currentBlock;
+
 }
 
 void XmlWriter::processFragment(const QTextFragment &currentFragment)
 {
+   // Dummy use of specified parameter currentFragment
+   QTextFragment localFragment;
+   localFragment = currentFragment;
 }

src/gui/doc/snippets/textblock-fragments/xmlwriter.h

@@ -52,6 +52,7 @@
 #define XMLWRITER_H
 
 #include <QDomDocument>
+#include <QTextBlock>
 
 class QTextDocument;