Debugger/ExceptionLogger.py

changeset 0
de9c2efb9d02
child 13
1af94a91f439
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Debugger/ExceptionLogger.py	Mon Dec 28 16:03:33 2009 +0000
@@ -0,0 +1,139 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2002 - 2009 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module implementing the Exception Logger widget.
+"""
+
+from PyQt4.QtCore import *
+from PyQt4.QtGui import *
+
+from E4Gui.E4Application import e4App
+
+
+class ExceptionLogger(QTreeWidget):
+    """
+    Class implementing the Exception Logger widget.
+    
+    This class displays a log of all exceptions having occured during
+    a debugging session.
+    
+    @signal sourceFile(string, int) emitted to open a source file at a line
+    """
+    def __init__(self, parent=None):
+        """
+        Constructor
+        
+        @param parent the parent widget of this widget
+        """
+        QTreeWidget.__init__(self, parent)
+        self.setObjectName("ExceptionLogger")
+        
+        self.setWindowTitle(self.trUtf8("Exceptions"))
+        
+        self.setWordWrap(True)
+        self.setRootIsDecorated(True)
+        self.setHeaderLabels([self.trUtf8("Exception")])
+        self.setSortingEnabled(False)
+
+        self.setContextMenuPolicy(Qt.CustomContextMenu)
+        self.connect(self,SIGNAL('customContextMenuRequested(const QPoint &)'),
+                     self.__showContextMenu)
+        self.connect(self,SIGNAL('itemDoubleClicked(QTreeWidgetItem *, int)'),
+                     self.__itemDoubleClicked)
+
+        self.setWhatsThis(self.trUtf8(
+            """<b>Exceptions Logger</b>"""
+            """<p>This windows shows a trace of all exceptions, that have"""
+            """ occured during the last debugging session. Initially only the"""
+            """ exception type and exception message are shown. After"""
+            """ the expansion of this entry, the complete call stack as reported"""
+            """ by the client is show with the most recent call first.</p>"""
+        ))
+        
+        self.menu = QMenu(self)
+        self.menu.addAction(self.trUtf8("Show source"), self.__openSource)
+        self.menu.addAction(self.trUtf8("Clear"), self.clear)
+        self.menu.addSeparator()
+        self.menu.addAction(self.trUtf8("Configure..."), self.__configure)
+        
+        self.backMenu = QMenu(self)
+        self.backMenu.addAction(self.trUtf8("Clear"), self.clear)
+        self.backMenu.addSeparator()
+        self.backMenu.addAction(self.trUtf8("Configure..."), self.__configure)
+        
+    def __itemDoubleClicked(self, itm):
+        """
+        Private slot to handle the double click of an item. 
+        
+        @param itm the item that was double clicked(QTreeWidgetItem), ignored
+        """
+        self.__openSource()
+
+    def __showContextMenu(self, coord):
+        """
+        Private slot to show the context menu of the listview.
+        
+        @param coord the global coordinates of the mouse pointer (QPoint)
+        """
+        itm = self.itemAt(coord)
+        coord = self.mapToGlobal(coord)
+        if itm is None:
+            self.backMenu.popup(coord)
+        else:
+            self.menu.popup(coord)
+            
+    def addException(self, exceptionType, exceptionMessage, stackTrace):
+        """
+        Public slot to handle the arrival of a new exception.
+        
+        @param exceptionType type of exception raised (string)
+        @param exceptionMessage message given by the exception (string)
+        @param stackTrace list of stack entries.
+        """
+        itm = QTreeWidgetItem(self)
+        if exceptionType is None:
+            itm.setText(0,
+                self.trUtf8('An unhandled exception occured.'
+                            ' See the shell window for details.'))
+            return
+        
+        if exceptionMessage == '':
+            itm.setText(0, "%s" % exceptionType)
+        else:
+            itm.setText(0, "%s, %s" % (exceptionType, exceptionMessage))
+        
+        # now add the call stack, most recent call first
+        for fn, ln in stackTrace:
+            excitm = QTreeWidgetItem(itm)
+            excitm.setText(0, "%s, %d" % (fn, ln))
+            
+    def debuggingStarted(self):
+        """
+        Public slot to clear the listview upon starting a new debugging session.
+        """
+        self.clear()
+        
+    def __openSource(self):
+        """
+        Private slot to handle a double click on an entry.
+        """
+        itm = self.currentItem()
+        
+        if itm.parent() is None:
+            return
+            
+        entry = itm.text(0)
+        entryList = entry.split(",")
+        try:
+            self.emit(SIGNAL('sourceFile'), entryList[0], int(entryList[1]))
+        except (IndexError, ValueError):
+            pass
+        
+    def __configure(self):
+        """
+        Private method to open the configuration dialog.
+        """
+        e4App().getObject("UserInterface").showPreferences("debuggerGeneralPage")

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