Re: [Pyobjc-dev] PyShellView?

[Dinu G. <gh...@da...>]

I wrote:

> Sounds good to me! You may want to sniff into the following maybe:
>
>    
> http://developer.apple.com/samplecode/Sample_Code/Cocoa/ 
> TextViewDelegate.htm
>
> Have fun,

Big fun, indeed!! The following conversion to PyObjC using an outlet
named 'committedLength' of type id in IB just crashes:

#------------------------------------------------------------------
#
#  MyAppDelegate.py
#  PyTextViewDelegate
#

from objc import YES, NO
from Foundation import NSObject
from AppKit import NSColor, NSApplicationDelegate
from PyObjCTools import NibClassBuilder

# create ObjC classes as defined in MainMenu.nib
NibClassBuilder.extractClasses("MainMenu")


class MyAppDelegate(NibClassBuilder.AutoBaseClass,  
NSApplicationDelegate):

     def awakeFromNib(self):
         "Set our committedLength outlet to the right start value."

         self.committedLength = 0


     def textView_shouldChangeTextInRange_replacementString_(self,
             textView, charRange, replString):
         "Allow editing only after the previously committed text."

         return charRange[0] >= self.committedLength
#------------------------------------------------------------------

But after using an instance variable 'cl' locally defined in
awakeFromNib everything works fine and I get the following code
working as the ObjC-counterpart:

#------------------------------------------------------------------
#
#  MyAppDelegate.py
#  PyTextViewDelegate
#

from objc import YES, NO
from Foundation import NSObject
from AppKit import NSColor, NSApplicationDelegate
from PyObjCTools import NibClassBuilder

# create ObjC classes as defined in MainMenu.nib
NibClassBuilder.extractClasses("MainMenu")


class MyAppDelegate(NibClassBuilder.AutoBaseClass,  
NSApplicationDelegate):

     def awakeFromNib(self):
         "Set our committedLength outlet to the right start value."

         # self.committedLength = 0
         self.cl = 0


     def textView_shouldChangeTextInRange_replacementString_(self,
             textView, charRange, replString):
         "Allow editing only after the previously committed text."

         return charRange[0] >= self.cl


     def textView_doCommandBySelector_(self, textView, commandSelector):
         "When return is entered, record and color the newly committed  
text."

         retval = NO

         if commandSelector == "insertNewline:":
             textLength = len(textView.string())
             if textLength > self.cl:
                 textView.setSelectedRange_((textLength, 0))
                 textView.insertText_("\n")
                 col = NSColor.redColor()
                 r = (self.cl, textLength - self.cl)
                 textView.setTextColor_range_(col, r)
                 textLength += 1
                 self.cl = textLength

             retval = YES

         return retval
#------------------------------------------------------------------

Nothing to do with using the NSTextViewDelegate - tried it, makes
no difference!

Pretty strange to me...

Dinu

--
Dinu C. Gherman
......................................................................
"We're concerned about AIDS inside our White House - make no mistake
about it." (George W. Bush, 7 Feb. 2001)