Mercurial Repositories > eric / file diff

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Toolbox/PyQt4ImportHook.py	Sun Sep 07 19:57:40 2014 +0200
@@ -0,0 +1,62 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2014 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+try:
+    import PyQt5    # __IGNORE_WARNING__ 
+except ImportError:
+    import sys
+
+    # TODO: adapt this for Python2
+    class PyQt4Importer(object):
+        def __init__(self):
+            """
+            Constructor
+            """
+            self.__path = None
+        
+        def find_module(self, fullname, path=None):
+            """
+            Public method returning the module loader.
+            
+            @param fullname name of the module to be loaded (string)
+            @param path path to resolve the module name (string)
+            @return module loader object
+            """
+            if fullname.startswith("PyQt5"):
+                self.__path = path
+                return self
+            
+            return None
+        
+        def load_module(self, fullname):
+            """
+            Public method to load a module.
+            
+            @param fullname name of the module to be loaded (string)
+            @return reference to the loaded module (module)
+            """
+            if fullname in ["PyQt5.QtWidgets", "PyQt5.QtPrintSupport"]:
+                newname = "PyQt4.QtGui"
+            elif fullname in ["PyQt5.QtWebKitWidgets"]:
+                newname = "PyQt4.QtWebKit"
+            else:
+                newname = fullname.replace("PyQt5", "PyQt4")
+            
+            import importlib
+            loader = importlib.find_loader(newname, self.__path)
+            module = loader.load_module(newname)
+            sys.modules[fullname] = module
+            if fullname == "PyQt5.QtCore":
+                import PyQt4.QtGui
+                module.qInstallMessageHandler = module.qInstallMsgHandler
+                module.QItemSelectionModel = PyQt4.QtGui.QItemSelectionModel
+                module.QItemSelection = PyQt4.QtGui.QItemSelection
+                module.QSortFilterProxyModel = \
+                    PyQt4.QtGui.QSortFilterProxyModel
+                module.QAbstractProxyModel = PyQt4.QtGui.QAbstractProxyModel
+                module.QStringListModel = PyQt4.QtGui.QStringListModel
+            return module
+
+    sys.meta_path.insert(0, PyQt4Importer())