diff -r a081458cc57b -r 144a6b854f70 eric7/EricWidgets/EricApplication.py
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/eric7/EricWidgets/EricApplication.py Sat May 22 19:58:24 2021 +0200
@@ -0,0 +1,152 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2009 - 2021 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Class implementing a specialized application class.
+"""
+
+from PyQt6.QtCore import Qt, QCoreApplication
+from PyQt6.QtGui import QPalette
+from PyQt6.QtWidgets import QApplication
+
+QCoreApplication.setAttribute(
+ Qt.ApplicationAttribute.AA_ShareOpenGLContexts, True)
+
+
+class EricApplication(QApplication):
+ """
+ Eric application class with an object registry.
+ """
+ def __init__(self, argv):
+ """
+ Constructor
+
+ @param argv command line arguments
+ @type list
+ """
+ super().__init__(argv)
+
+ QCoreApplication.setAttribute(
+ Qt.ApplicationAttribute.AA_DontCreateNativeWidgetSiblings, True)
+
+ self.__objectRegistry = {}
+ self.__pluginObjectRegistry = {}
+
+ def registerObject(self, name, objectRef):
+ """
+ Public method to register an object in the object registry.
+
+ @param name name of the object
+ @type str
+ @param objectRef reference to the object
+ @type any
+ @exception KeyError raised when the given name is already in use
+ """
+ if name in self.__objectRegistry:
+ raise KeyError('Object "{0}" already registered.'.format(name))
+ else:
+ self.__objectRegistry[name] = objectRef
+
+ def getObject(self, name):
+ """
+ Public method to get a reference to a registered object.
+
+ @param name name of the object
+ @type str
+ @return reference to the registered object
+ @rtype any
+ @exception KeyError raised when the given name is not known
+ """
+ if name not in self.__objectRegistry:
+ raise KeyError('Object "{0}" is not registered.'.format(name))
+
+ return self.__objectRegistry[name]
+
+ def registerPluginObject(self, name, objectRef, pluginType=None):
+ """
+ Public method to register a plugin object in the object registry.
+
+ @param name name of the plugin object
+ @type str
+ @param objectRef reference to the plugin object
+ @type any
+ @param pluginType type of the plugin object
+ @type str
+ @exception KeyError raised when the given name is already in use
+ """
+ if name in self.__pluginObjectRegistry:
+ raise KeyError(
+ 'Pluginobject "{0}" already registered.'.format(name))
+ else:
+ self.__pluginObjectRegistry[name] = (objectRef, pluginType)
+
+ def unregisterPluginObject(self, name):
+ """
+ Public method to unregister a plugin object in the object registry.
+
+ @param name name of the plugin object
+ @type str
+ """
+ if name in self.__pluginObjectRegistry:
+ 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
+ @type str
+ @return reference to the registered plugin object
+ @rtype any
+ @exception KeyError raised when the given name is not known
+ """
+ if name not in self.__pluginObjectRegistry:
+ raise KeyError(
+ 'Pluginobject "{0}" is not registered.'.format(name))
+
+ return self.__pluginObjectRegistry[name][0]
+
+ def getPluginObjects(self):
+ """
+ Public method to get a list of (name, reference) pairs of all
+ registered plugin objects.
+
+ @return list of (name, reference) pairs
+ @rtype list of (str, any)
+ """
+ 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
+ @type str
+ @return type of the plugin object
+ @rtype str
+ @exception KeyError raised when the given name is not known
+ """
+ if name not in self.__pluginObjectRegistry:
+ raise KeyError(
+ 'Pluginobject "{0}" is not registered.'.format(name))
+
+ return self.__pluginObjectRegistry[name][1]
+
+ def usesDarkPalette(self):
+ """
+ Public method to check, if the application uses a palette with a dark
+ background.
+
+ @return flag indicating the use of a palette with a dark background
+ @rtype bool
+ """
+ palette = self.palette()
+ lightness = palette.color(QPalette.ColorRole.Window).lightness()
+ return lightness <= 128
+
+ericApp = QCoreApplication.instance
