[Python编程(第4版)].(Programming.Python.4th.Edition).Mark.Lutz.文字版

self.currfile = name # for save
self.filelabel.config(text=str(name))

def setKnownEncoding(self, encoding='utf-8'): # 2.1: for saves if inserted
self.knownEncoding = encoding # else saves use config, ask?

def setBg(self, color):
self.text.config(bg=color) # to set manually from code
def setFg(self, color):
self.text.config(fg=color) # 'black', hexstring
def setFont(self, font):
self.text.config(font=font) # ('family', size, 'style')

def setHeight(self, lines): # default = 24h x 80w
self.text.config(height=lines) # may also be from textCongif.py
def setWidth(self, chars):
self.text.config(width=chars)

def clearModified(self):
self.text.edit_modified(0) # clear modified flag
def isModified(self):
return self.text_edit_modified() # changed since last reset?

def help(self):
showinfo('About PyEdit', helptext % ((Version,)*2))

################################################################################

Ready-to-use editor classes

mixes in a GuiMaker Frame subclass which builds menu and toolbars

these classes are common use cases, but other configurations are possible;

call TextEditorMain().mainloop() to start PyEdit as a standalone program;

redefine/extend onQuit in a subclass to catch exit or destroy (see PyView);

caveat: could use windows.py for icons, but quit protocol is custom here.

################################################################################

#-------------------------------------------------------------------------------

2.1: on quit(), don't silently exit entire app if any other changed edit

windows are open in the process - changes would be lost because all other

windows are closed too, including multiple Tk editor parents; uses a list

to keep track of all PyEdit window instances open in process; this may be

too broad (if we destroy() instead of quit(), need only check children

of parent being destroyed), but better to err on side of being too inclusive;

onQuit moved here because varies per window type and is not present for all;

assumes a TextEditorMainPopup is never a parent to other editor windows -

Toplevel children are destroyed with their parents; this does not address

closes outside the scope of PyEdit classes here (tkinter quit is available

on every widget, and any widget type may be a Toplevel parent!); client is

responsible for checking for editor content changes in all uncovered cases;

note that tkinter's bind event won't help here, because its callback

cannot run GUI operations such as text change tests and fetches - see the

book and destroyer.py for more details on this event;