Added hasParent method

Do not add ItemDelegate to combobox views if inside QWebView, because ItemDelegate handling is broken in
Qt for such widgets
BUG: 339466

kstyle/breezestyle.cpp

@@ -357,9 +357,12 @@ namespace Breeze
 
         } else if( QComboBox *comboBox = qobject_cast<QComboBox*>( widget ) ) {
 
-            QAbstractItemView *itemView( comboBox->view() );
-            if( itemView && itemView->itemDelegate() && itemView->itemDelegate()->inherits( "QComboBoxDelegate" ) )
-            { itemView->setItemDelegate( new BreezePrivate::ComboBoxItemDelegate( itemView ) ); }
+            if( !hasParent( widget, "QWebView" ) )
+            {
+                QAbstractItemView *itemView( comboBox->view() );
+                if( itemView && itemView->itemDelegate() && itemView->itemDelegate()->inherits( "QComboBoxDelegate" ) )
+                { itemView->setItemDelegate( new BreezePrivate::ComboBoxItemDelegate( itemView ) ); }
+            }
 
         } else if( widget->inherits( "QComboBoxPrivateContainer" ) ) {
 

kstyle/breezestyle.h

@@ -421,6 +421,12 @@ namespace Breeze
         //* return which arrow button is hit by point for scrollbar double buttons
         inline QStyle::SubControl scrollBarHitTest( const QRect&, const QPoint&, const QStyleOption* ) const;
 
+        //! return true if one of the widget's parent inherits requested type
+        inline bool hasParent( const QWidget*, const char* ) const;
+
+        //* return true if one of the widget's parent inherits requested type
+        template<typename T> bool hasParent( const QWidget* ) const;
+
         private:
 
         //*@name scrollbar button types (for addLine and subLine )
@@ -511,6 +517,33 @@ namespace Breeze
 
     }
 
+    //_________________________________________________________________________
+    bool Style::hasParent( const QWidget* widget, const char* className ) const
+    {
+
+        if( !widget ) return false;
+
+        while( (widget = widget->parentWidget()) )
+        { if( widget->inherits( className ) ) return true; }
+
+        return false;
+
+    }
+
+    //_________________________________________________________________________
+    template< typename T > bool Style::hasParent( const QWidget* widget ) const
+    {
+
+        if( !widget ) return false;
+
+        while( (widget = widget->parentWidget()) )
+        { if( qobject_cast<const T*>( widget ) ) return true; }
+
+        return false;
+
+    }
+
+
 }
 
 #endif