QHeaderView is unecessarily heavy to include everywhere

src/frontends/qt/ButtonController.cpp

@@ -24,6 +24,7 @@
 #include <QLabel>
 #include <QList>
 #include <QTabWidget>
+#include <QTabBar>
 #include <QValidator>
 
 

src/frontends/qt/GuiAbout.cpp

@@ -26,6 +26,7 @@
 #include <QClipboard>
 #include <QDate>
 #include <QFile>
+#include <QRegularExpression>
 #include <QTextStream>
 
 using namespace lyx::support;

src/frontends/qt/GuiApplication.cpp

@@ -113,6 +113,7 @@
 #include <QSocketNotifier>
 #include <QSortFilterProxyModel>
 #include <QStandardItemModel>
+#include <QStyle>
 #include <QSvgRenderer>
 #include <QTimer>
 #include <QTranslator>

src/frontends/qt/GuiDialog.cpp

@@ -22,6 +22,7 @@
 #include <QCloseEvent>
 #include <QDialogButtonBox>
 #include <QColorDialog>
+#include <QRegularExpression>
 
 using namespace std;
 

src/frontends/qt/GuiFontMetrics.cpp

@@ -28,6 +28,7 @@
 #include "support/pmprof.h"
 
 #include <QByteArray>
+#include <QFontInfo>
 #include <QRawFont>
 #include <QtEndian>
 

src/frontends/qt/LaTeXHighlighter.cpp

@@ -13,6 +13,8 @@
 #include "LaTeXHighlighter.h"
 #include "qt_helpers.h"
 
+#include <QPalette>
+#include <QRegularExpression>
 #include <QString>
 #include <QTextDocument>
 

src/frontends/qt/qt_helpers.cpp

@@ -34,6 +34,7 @@
 #include <QComboBox>
 #include <QDesktopServices>
 #include <QDir>
+#include <QHeaderView>
 #include <QInputDialog>
 #include <QLineEdit>
 #include <QMessageBox>

src/frontends/qt/qt_helpers.h

@@ -21,12 +21,13 @@
 
 #include <list>
 
-#include <QHeaderView>
+#include <QString>
 
 class QComboBox;
 class QLineEdit;
 class QString;
 class QWidget;
+class QAbstractItemView;
 
 namespace lyx {