Add button to error dialog for post mortem debugging (src checkout only)

src/mcedit2/dialogs/error_dialog.py

@@ -11,6 +11,7 @@ from PySide import QtGui, QtCore
 
 from mcedit2.ui.dialogs.error_dialog import Ui_errorDialog
 from mcedit2.util import qglcontext
+from mcedit2.util.resources import isSrcCheckout
 from mcedit2.util.screen import centerWidgetInScreen
 from mcedit2.util.showprogress import MCEProgressDialog
 
@@ -45,6 +46,7 @@ class ErrorDialog(QtGui.QDialog, Ui_errorDialog):
         super(ErrorDialog, self).__init__()
         self.setupUi(self)
         self.setModal(True)
+        self.exc_info = exc_info
 
         exc_type, exc_value, exc_tb = exc_info
 
@@ -77,6 +79,9 @@ class ErrorDialog(QtGui.QDialog, Ui_errorDialog):
 
         self.quitMCEditButton.setVisible(fatal)
         self.quitMCEditButton.clicked.connect(self.quitMCEdit)
+        
+        self.debugButton.setEnabled(isSrcCheckout())
+        self.debugButton.clicked.connect(self.debugPdb)
 
         try:
             import Pastebin
@@ -126,4 +131,7 @@ class ErrorDialog(QtGui.QDialog, Ui_errorDialog):
         raise SystemExit
 
     def quitMCEdit(self):
-        raise SystemExit
+        raise SystemExit
+    
+    def debugPdb(self):
+        import pdb; pdb.post_mortem(self.exc_info[2])

src/mcedit2/ui/dialogs/error_dialog.ui

@@ -100,6 +100,13 @@
        </property>
       </spacer>
      </item>
+     <item>
+      <widget class="QPushButton" name="debugButton">
+       <property name="text">
+        <string>Debug</string>
+       </property>
+      </widget>
+     </item>
      <item>
       <widget class="QPushButton" name="copyToPastebinButton">
        <property name="text">