Aleš Erjavec avatar Aleš Erjavec committed 93289de

Fixed '' and 'headerData' methods.

Should always return a QVariant if exposed by sip.

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 from xml.sax.saxutils import escape
+from functools import wraps
+import sip
 import Orange
 from OWWidget import *
     return tip
+def api_qvariant(func):
+    @wraps(func)
+    def data_get(*args, **kwargs):
+        return QVariant(func(*args, **kwargs))
+    return data_get
+if hasattr(sip, "getapi") and sip.getapi("QVariant") > 1:
+    def api_qvariant(func):
+        return func
 class ExampleTableModel(QAbstractItemModel):
     Attribute, ClassVar, ClassVars, Meta = range(4)
+    @api_qvariant
     def data(self, index, role,
              # For optimizing out LOAD_GLOBAL byte code instructions in
              # the item role tests (goes from 14 us to 9 us average).
             return len(self.all_attrs)
+    @api_qvariant
     def headerData(self, section, orientation, role):
         if orientation == Qt.Horizontal:
             attr = self.all_attrs[section]
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