Display import errors in the GUI as well as the terminal, issue 789, thanks Marc

VERSION

@@ -1 +1 @@
-Version 1.99.7 (2012-05-11 08:22:42) dev
+Version 1.99.7 (2012-05-11 08:26:42) dev

gluon/messageboxhandler.py

@@ -0,0 +1,15 @@
+import logging
+
+try:
+    import tkMessageBox
+except:
+    tkMessageBox = None
+
+class MessageBoxHandler(logging.Handler):
+    def __init__(self):
+        logging.Handler.__init__(self)
+
+    def emit(self, record):
+        if tkMessageBox:
+            msg = self.format(record)
+            tkMessageBox.showinfo('info1', msg)

gluon/widget.py

@@ -405,7 +405,6 @@ class web2pyDialog(object):
 
         if not self.server_ready():
             self.button_start.configure(state='normal')
-            tkMessageBox.showerror('web2py start server', 'server didn\'t start - check console')
             return
 
         self.button_stop.configure(state='normal')

logging.example.conf

@@ -32,7 +32,7 @@
 keys=root,rocket,markdown,web2py,rewrite,app,welcome
 
 [handlers]
-keys=consoleHandler
+keys=consoleHandler,messageBoxHandler
 #keys=consoleHandler,rotatingFileHandler
 #keys=osxSysLogHandler
 
@@ -72,7 +72,7 @@ propagate=0
 # loggers for legacy getLogger calls: Rocket and markdown
 [logger_rocket]
 level=WARNING
-handlers=consoleHandler
+handlers=consoleHandler,messageBoxHandler
 qualname=Rocket
 propagate=0
 
@@ -88,6 +88,12 @@ level=WARNING
 formatter=simpleFormatter
 args=(sys.stdout,)
 
+[handler_messageBoxHandler]
+class=gluon.messageboxhandler.MessageBoxHandler
+level=ERROR
+formatter=simpleFormatter
+args=()
+
 # Rotating file handler
 #   mkdir logs in the web2py base directory if not already present
 #   args: (filename[, mode[, maxBytes[, backupCount[, encoding[, delay]]]]])