diff -r 000000000000 -r de9c2efb9d02 E4Gui/E4Application.py
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/E4Gui/E4Application.py Mon Dec 28 16:03:33 2009 +0000
@@ -0,0 +1,115 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2009 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Class implementing a specialized application class.
+"""
+
+from PyQt4.QtCore import QCoreApplication
+from PyQt4.QtGui import QApplication
+
+class E4Application(QApplication):
+ """
+ Eric application class with an object registry.
+ """
+ def __init__(self, argv):
+ """
+ Constructor
+
+ @param argv command line arguments
+ """
+ QApplication.__init__(self, argv)
+
+ self.__objectRegistry = {}
+ self.__pluginObjectRegistry = {}
+
+ def registerObject(self, name, object):
+ """
+ Public method to register an object in the object registry.
+
+ @param name name of the object (string)
+ @param object reference to the object
+ @exception KeyError raised when the given name is already in use
+ """
+ if self.__objectRegistry.has_key(name):
+ raise KeyError('Object "%s" already registered.' % name)
+ else:
+ self.__objectRegistry[name] = object
+
+ def getObject(self, name):
+ """
+ Public method to get a reference to a registered object.
+
+ @param name name of the object (string)
+ @return reference to the registered object
+ @exception KeyError raised when the given name is not known
+ """
+ if self.__objectRegistry.has_key(name):
+ return self.__objectRegistry[name]
+ else:
+ raise KeyError('Object "%s" is not registered.' % name)
+
+ def registerPluginObject(self, name, object, pluginType = None):
+ """
+ Public method to register a plugin object in the object registry.
+
+ @param name name of the plugin object (string)
+ @param object reference to the plugin object
+ @keyparam pluginType type of the plugin object (string)
+ @exception KeyError raised when the given name is already in use
+ """
+ if self.__pluginObjectRegistry.has_key(name):
+ raise KeyError('Pluginobject "%s" already registered.' % name)
+ else:
+ self.__pluginObjectRegistry[name] = (object, pluginType)
+
+ def unregisterPluginObject(self, name):
+ """
+ Public method to unregister a plugin object in the object registry.
+
+ @param name name of the plugin object (string)
+ """
+ if self.__pluginObjectRegistry.has_key(name):
+ del self.__pluginObjectRegistry[name]
+
+ def getPluginObject(self, name):
+ """
+ Public method to get a reference to a registered plugin object.
+
+ @param name name of the plugin object (string)
+ @return reference to the registered plugin object
+ @exception KeyError raised when the given name is not known
+ """
+ if self.__pluginObjectRegistry.has_key(name):
+ return self.__pluginObjectRegistry[name][0]
+ else:
+ raise KeyError('Pluginobject "%s" is not registered.' % name)
+
+ def getPluginObjects(self):
+ """
+ Public method to get a list of (name, reference) pairs of all
+ registered plugin objects.
+
+ @return list of (name, reference) pairs
+ """
+ objects = []
+ for name in self.__pluginObjectRegistry:
+ objects.append((name, self.__pluginObjectRegistry[name][0]))
+ return objects
+
+ def getPluginObjectType(self, name):
+ """
+ Public method to get the type of a registered plugin object.
+
+ @param name name of the plugin object (string)
+ @return type of the plugin object (string)
+ @exception KeyError raised when the given name is not known
+ """
+ if self.__pluginObjectRegistry.has_key(name):
+ return self.__pluginObjectRegistry[name][1]
+ else:
+ raise KeyError('Pluginobject "%s" is not registered.' % name)
+
+e4App = QCoreApplication.instance
