cpython/Mac/Tools/IDE/PyEdit.py

"""A (less & less) simple Python editor"""

import W
import Wtraceback
from Wkeys import *

import MacOS
import EasyDialogs
from Carbon import Win
from Carbon import Res
from Carbon import Evt
from Carbon import Qd
from Carbon import File
import os
import imp
import sys
import string
import marshal
import re

smAllScripts = -3

if hasattr(Win, "FrontNonFloatingWindow"):
	MyFrontWindow = Win.FrontNonFloatingWindow
else:
	MyFrontWindow = Win.FrontWindow


try:
	import Wthreading
except ImportError:
	haveThreading = 0
else:
	haveThreading = Wthreading.haveThreading

_scriptuntitledcounter = 1
_wordchars = string.ascii_letters + string.digits + "_"


runButtonLabels = ["Run all", "Stop!"]
runSelButtonLabels = ["Run selection", "Pause!", "Resume"]


class Editor(W.Window):
	
	def __init__(self, path = "", title = ""):
		defaultfontsettings, defaulttabsettings, defaultwindowsize = geteditorprefs()
		global _scriptuntitledcounter
		if not path:
			if title:
				self.title = title
			else:
				self.title = "Untitled Script " + `_scriptuntitledcounter`
				_scriptuntitledcounter = _scriptuntitledcounter + 1
			text = ""
			self._creator = W._signature
			self._eoln = os.linesep
		elif os.path.exists(path):
			path = resolvealiases(path)
			dir, name = os.path.split(path)
			self.title = name
			f = open(path, "rb")
			text = f.read()
			f.close()
			self._creator, filetype = MacOS.GetCreatorAndType(path)
			self.addrecentfile(path)
		else:
			raise IOError, "file '%s' does not exist" % path
		self.path = path
		
		if '\n' in text:
			if string.find(text, '\r\n') >= 0:
				self._eoln = '\r\n'
			else:
				self._eoln = '\n'
			text = string.replace(text, self._eoln, '\r')
			change = 0
		else:
			change = 0
			self._eoln = '\r'
		
		self.settings = {}
		if self.path:
			self.readwindowsettings()
		if self.settings.has_key("windowbounds"):
			bounds = self.settings["windowbounds"]
		else:
			bounds = defaultwindowsize
		if self.settings.has_key("fontsettings"):
			self.fontsettings = self.settings["fontsettings"]
		else:
			self.fontsettings = defaultfontsettings
		if self.settings.has_key("tabsize"):
			try:
				self.tabsettings = (tabsize, tabmode) = self.settings["tabsize"]
			except:
				self.tabsettings = defaulttabsettings
		else:
			self.tabsettings = defaulttabsettings
		
		W.Window.__init__(self, bounds, self.title, minsize = (330, 120), tabbable = 0)
		self.setupwidgets(text)
		if change > 0:
			self.editgroup.editor.textchanged()
		
		if self.settings.has_key("selection"):
			selstart, selend = self.settings["selection"]
			self.setselection(selstart, selend)
		self.open()
		self.setinfotext()
		self.globals = {}
		self._buf = ""  # for write method
		self.debugging = 0
		self.profiling = 0
		self.run_as_main = self.settings.get("run_as_main", 0)
		self.run_with_interpreter = self.settings.get("run_with_interpreter", 0)
		self.run_with_cl_interpreter = self.settings.get("run_with_cl_interpreter", 0)
		self._threadstate = (0, 0)
		self._thread = None
	
	def readwindowsettings(self):
		try:
			resref = Res.FSpOpenResFile(self.path, 1)
		except Res.Error:
			return
		try:
			Res.UseResFile(resref)
			data = Res.Get1Resource('PyWS', 128)
			self.settings = marshal.loads(data.data)
		except:
			pass
		Res.CloseResFile(resref)
		
	def writewindowsettings(self):
		try:
			resref = Res.FSpOpenResFile(self.path, 3)
		except Res.Error:
			Res.FSpCreateResFile(self.path, self._creator, 'TEXT', smAllScripts)
			resref = Res.FSpOpenResFile(self.path, 3)
		try:
			data = Res.Resource(marshal.dumps(self.settings))
			Res.UseResFile(resref)
			try:
				temp = Res.Get1Resource('PyWS', 128)
				temp.RemoveResource()
			except Res.Error:
				pass
			data.AddResource('PyWS', 128, "window settings")
		finally:
			Res.UpdateResFile(resref)
			Res.CloseResFile(resref)
	
	def getsettings(self):
		self.settings = {}
		self.settings["windowbounds"] = self.getbounds()
		self.settings["selection"] = self.getselection()
		self.settings["fontsettings"] = self.editgroup.editor.getfontsettings()
		self.settings["tabsize"] = self.editgroup.editor.gettabsettings()
		self.settings["run_as_main"] = self.run_as_main
		self.settings["run_with_interpreter"] = self.run_with_interpreter
		self.settings["run_with_cl_interpreter"] = self.run_with_cl_interpreter
	
	def get(self):
		return self.editgroup.editor.get()
	
	def getselection(self):
		return self.editgroup.editor.ted.WEGetSelection()
	
	def setselection(self, selstart, selend):
		self.editgroup.editor.setselection(selstart, selend)
	
	def getfilename(self):
		if self.path:
			return self.path
		return '<%s>' % self.title
	
	def setupwidgets(self, text):
		topbarheight = 24
		popfieldwidth = 80
		self.lastlineno = None
		
		# make an editor
		self.editgroup = W.Group((0, topbarheight + 1, 0, 0))
		editor = W.PyEditor((0, 0, -15,-15), text, 
				fontsettings = self.fontsettings, 
				tabsettings = self.tabsettings,
				file = self.getfilename())
		
		# make the widgets
		self.popfield = ClassFinder((popfieldwidth - 17, -15, 16, 16), [], self.popselectline)
		self.linefield = W.EditText((-1, -15, popfieldwidth - 15, 16), inset = (6, 1))
		self.editgroup._barx = W.Scrollbar((popfieldwidth - 2, -15, -14, 16), editor.hscroll, max = 32767)
		self.editgroup._bary = W.Scrollbar((-15, 14, 16, -14), editor.vscroll, max = 32767)
		self.editgroup.editor = editor	# add editor *after* scrollbars
		
		self.editgroup.optionsmenu = W.PopupMenu((-15, -1, 16, 16), [])
		self.editgroup.optionsmenu.bind('<click>', self.makeoptionsmenu)
		
		self.bevelbox = W.BevelBox((0, 0, 0, topbarheight))
		self.hline = W.HorizontalLine((0, topbarheight, 0, 0))
		self.infotext = W.TextBox((175, 6, -4, 14), backgroundcolor = (0xe000, 0xe000, 0xe000))
		self.runbutton = W.BevelButton((6, 4, 80, 16), runButtonLabels[0], self.run)
		self.runselbutton = W.BevelButton((90, 4, 80, 16), runSelButtonLabels[0], self.runselection)
		
		# bind some keys
		editor.bind("cmdr", self.runbutton.push)
		editor.bind("enter", self.runselbutton.push)
		editor.bind("cmdj", self.domenu_gotoline)
		editor.bind("cmdd", self.domenu_toggledebugger)
		editor.bind("<idle>", self.updateselection)
		
		editor.bind("cmde", searchengine.setfindstring)
		editor.bind("cmdf", searchengine.show)
		editor.bind("cmdg", searchengine.findnext)
		editor.bind("cmdshiftr", searchengine.replace)
		editor.bind("cmdt", searchengine.replacefind)
		
		self.linefield.bind("return", self.dolinefield)
		self.linefield.bind("enter", self.dolinefield)
		self.linefield.bind("tab", self.dolinefield)
		
		# intercept clicks
		editor.bind("<click>", self.clickeditor)
		self.linefield.bind("<click>", self.clicklinefield)
	
	def makeoptionsmenu(self):
		menuitems = [('Font settings\xc9', self.domenu_fontsettings), 
				("Save options\xc9", self.domenu_options),
				'-',
				('\0' + chr(self.run_as_main) + 'Run as __main__', self.domenu_toggle_run_as_main), 
				#('\0' + chr(self.run_with_interpreter) + 'Run with Interpreter', self.domenu_dtoggle_run_with_interpreter), 
				('\0' + chr(self.run_with_cl_interpreter) + 'Run with commandline Python', self.domenu_toggle_run_with_cl_interpreter), 
				'-',
				('Modularize', self.domenu_modularize),
				('Browse namespace\xc9', self.domenu_browsenamespace), 
				'-']
		if self.profiling:
			menuitems = menuitems + [('Disable profiler', self.domenu_toggleprofiler)]
		else:
			menuitems = menuitems + [('Enable profiler', self.domenu_toggleprofiler)]
		if self.editgroup.editor._debugger:
			menuitems = menuitems + [('Disable debugger', self.domenu_toggledebugger),
				('Clear breakpoints', self.domenu_clearbreakpoints),
				('Edit breakpoints\xc9', self.domenu_editbreakpoints)]
		else:
			menuitems = menuitems + [('Enable debugger', self.domenu_toggledebugger)]
		self.editgroup.optionsmenu.set(menuitems)
	
	def domenu_toggle_run_as_main(self):
		self.run_as_main = not self.run_as_main
		self.run_with_interpreter = 0
		self.run_with_cl_interpreter = 0
		self.editgroup.editor.selectionchanged()
	
	def XXdomenu_toggle_run_with_interpreter(self):
		self.run_with_interpreter = not self.run_with_interpreter
		self.run_as_main = 0
		self.run_with_cl_interpreter = 0
		self.editgroup.editor.selectionchanged()
	
	def domenu_toggle_run_with_cl_interpreter(self):
		self.run_with_cl_interpreter = not self.run_with_cl_interpreter
		self.run_as_main = 0
		self.run_with_interpreter = 0
		self.editgroup.editor.selectionchanged()
	
	def showbreakpoints(self, onoff):
		self.editgroup.editor.showbreakpoints(onoff)
		self.debugging = onoff
	
	def domenu_clearbreakpoints(self, *args):
		self.editgroup.editor.clearbreakpoints()
	
	def domenu_editbreakpoints(self, *args):
		self.editgroup.editor.editbreakpoints()
	
	def domenu_toggledebugger(self, *args):
		if not self.debugging:
			W.SetCursor('watch')
		self.debugging = not self.debugging
		self.editgroup.editor.togglebreakpoints()
		
	def domenu_toggleprofiler(self, *args):
		self.profiling = not self.profiling
	
	def domenu_browsenamespace(self, *args):
		import PyBrowser, W
		W.SetCursor('watch')
		globals, file, modname = self.getenvironment()
		if not modname:
			modname = self.title
		PyBrowser.Browser(globals, "Object browser: " + modname)
	
	def domenu_modularize(self, *args):
		modname = _filename_as_modname(self.title)
		if not modname:
			raise W.AlertError, "Can't modularize \"%s\"" % self.title
		run_as_main = self.run_as_main
		self.run_as_main = 0
		self.run()
		self.run_as_main = run_as_main
		if self.path:
			file = self.path
		else:
			file = self.title
		
		if self.globals and not sys.modules.has_key(modname):
			module = imp.new_module(modname)
			for attr in self.globals.keys():
				setattr(module,attr,self.globals[attr])
			sys.modules[modname] = module
			self.globals = {}
	
	def domenu_fontsettings(self, *args):
		import FontSettings
		fontsettings = self.editgroup.editor.getfontsettings()
		tabsettings = self.editgroup.editor.gettabsettings()
		settings = FontSettings.FontDialog(fontsettings, tabsettings)
		if settings:
			fontsettings, tabsettings = settings
			self.editgroup.editor.setfontsettings(fontsettings)
			self.editgroup.editor.settabsettings(tabsettings)
	
	def domenu_options(self, *args):
		rv = SaveOptions(self._creator, self._eoln)
		if rv:
			self.editgroup.editor.selectionchanged() # ouch...
			self._creator, self._eoln = rv
	
	def clicklinefield(self):
		if self._currentwidget <> self.linefield:
			self.linefield.select(1)
			self.linefield.selectall()
			return 1
	
	def clickeditor(self):
		if self._currentwidget <> self.editgroup.editor:
			self.dolinefield()
			return 1
	
	def updateselection(self, force = 0):
		sel = min(self.editgroup.editor.getselection())
		lineno = self.editgroup.editor.offsettoline(sel)
		if lineno <> self.lastlineno or force:
			self.lastlineno = lineno
			self.linefield.set(str(lineno + 1))
			self.linefield.selview()
	
	def dolinefield(self):
		try:
			lineno = string.atoi(self.linefield.get()) - 1
			if lineno <> self.lastlineno:
				self.editgroup.editor.selectline(lineno)
				self.updateselection(1)
		except:
			self.updateselection(1)
		self.editgroup.editor.select(1)
	
	def setinfotext(self):
		if not hasattr(self, 'infotext'):
			return
		if self.path:
			self.infotext.set(self.path)
		else:
			self.infotext.set("")
	
	def close(self):
		if self.editgroup.editor.changed:
			Qd.InitCursor()
			save = EasyDialogs.AskYesNoCancel('Save window "%s" before closing?' % self.title,
					default=1, no="Don\xd5t save")
			if save > 0:
				if self.domenu_save():
					return 1
			elif save < 0:
				return 1
		self.globals = None
		W.Window.close(self)
	
	def domenu_close(self, *args):
		return self.close()
	
	def domenu_save(self, *args):
		if not self.path:
			# Will call us recursively
			return self.domenu_save_as()
		data = self.editgroup.editor.get()
		if self._eoln != '\r':
			data = string.replace(data, '\r', self._eoln)
		fp = open(self.path, 'wb')  # open file in binary mode, data has '\r' line-endings
		fp.write(data)
		fp.close()
		MacOS.SetCreatorAndType(self.path, self._creator, 'TEXT')
		self.getsettings()
		self.writewindowsettings()
		self.editgroup.editor.changed = 0
		self.editgroup.editor.selchanged = 0
		import linecache
		if linecache.cache.has_key(self.path):
			del linecache.cache[self.path]
		import macostools
		macostools.touched(self.path)
		self.addrecentfile(self.path)
	
	def can_save(self, menuitem):
		return self.editgroup.editor.changed or self.editgroup.editor.selchanged
	
	def domenu_save_as(self, *args):
		path = EasyDialogs.AskFileForSave(message='Save as:', savedFileName=self.title)
		if not path: 
			return 1
		self.showbreakpoints(0)
		self.path = path
		self.setinfotext()
		self.title = os.path.split(self.path)[-1]
		self.wid.SetWTitle(self.title)
		self.domenu_save()
		self.editgroup.editor.setfile(self.getfilename())
		app = W.getapplication()
		app.makeopenwindowsmenu()
		if hasattr(app, 'makescriptsmenu'):
			app = W.getapplication()
			fsr, changed = app.scriptsfolder.FSResolveAlias(None)
			path = fsr.as_pathname()
			if path == self.path[:len(path)]:
				W.getapplication().makescriptsmenu()
	
	def domenu_save_as_applet(self, *args):
		import buildtools
		
		buildtools.DEBUG = 0	# ouch.
		
		if self.title[-3:] == ".py":
			destname = self.title[:-3]
		else:
			destname = self.title + ".applet"
		destname = EasyDialogs.AskFileForSave(message='Save as Applet:', 
			savedFileName=destname)
		if not destname: 
			return 1
		W.SetCursor("watch")
		if self.path:
			filename = self.path
			if filename[-3:] == ".py":
				rsrcname = filename[:-3] + '.rsrc'
			else:
				rsrcname = filename + '.rsrc'
		else:
			filename = self.title
			rsrcname = ""
		
		pytext = self.editgroup.editor.get()
		pytext = string.split(pytext, '\r')
		pytext = string.join(pytext, '\n') + '\n'
		try:
			code = compile(pytext, filename, "exec")
		except (SyntaxError, EOFError):
			raise buildtools.BuildError, "Syntax error in script %s" % `filename`
			
		import tempfile
		tmpdir = tempfile.mkdtemp()
		
		if filename[-3:] != ".py":
			filename = filename + ".py"
		filename = os.path.join(tmpdir, os.path.split(filename)[1])
		fp = open(filename, "w")
		fp.write(pytext)
		fp.close()
		
		# Try removing the output file
		try:
			os.remove(destname)
		except os.error:
			pass
		template = buildtools.findtemplate()
		buildtools.process(template, filename, destname, 1, rsrcname=rsrcname, progress=None)
		try:
			os.remove(filename)
			os.rmdir(tmpdir)
		except os.error:
			pass
	
	def domenu_gotoline(self, *args):
		self.linefield.selectall()
		self.linefield.select(1)
		self.linefield.selectall()
	
	def domenu_selectline(self, *args):
		self.editgroup.editor.expandselection()
	
	def domenu_find(self, *args):
		searchengine.show()
	
	def domenu_entersearchstring(self, *args):
		searchengine.setfindstring()
	
	def domenu_replace(self, *args):
		searchengine.replace()
	
	def domenu_findnext(self, *args):
		searchengine.findnext()
	
	def domenu_replacefind(self, *args):
		searchengine.replacefind()
	
	def domenu_run(self, *args):
		self.runbutton.push()
	
	def domenu_runselection(self, *args):
		self.runselbutton.push()
	
	def run(self):
		if self._threadstate == (0, 0):
			self._run()
		else:
			lock = Wthreading.Lock()
			lock.acquire()
			self._thread.postException(KeyboardInterrupt)
			if self._thread.isBlocked():
				self._thread.start()
			lock.release()
	
	def _run(self):
		if self.run_with_interpreter:
			if self.editgroup.editor.changed:
				Qd.InitCursor()
				save = EasyDialogs.AskYesNoCancel('Save "%s" before running?' % self.title, 1)
				if save > 0:
					if self.domenu_save():
						return
				elif save < 0:
					return
			if not self.path:
				raise W.AlertError, "Can't run unsaved file"
			self._run_with_interpreter()
		elif self.run_with_cl_interpreter:
			if self.editgroup.editor.changed:
				Qd.InitCursor()
				save = EasyDialogs.AskYesNoCancel('Save "%s" before running?' % self.title, 1)
				if save > 0:
					if self.domenu_save():
						return
				elif save < 0:
					return
			if not self.path:
				raise W.AlertError, "Can't run unsaved file"
			self._run_with_cl_interpreter()
		else:
			pytext = self.editgroup.editor.get()
			globals, file, modname = self.getenvironment()
			self.execstring(pytext, globals, globals, file, modname)
	
	def _run_with_interpreter(self):
		interp_path = os.path.join(sys.exec_prefix, "PythonInterpreter")
		if not os.path.exists(interp_path):
			raise W.AlertError, "Can't find interpreter"
		import findertools
		XXX

	def _run_with_cl_interpreter(self):
		import Terminal
		interp_path = os.path.join(sys.exec_prefix, "bin", "python")
		file_path = self.path
		if not os.path.exists(interp_path):
			# This "can happen" if we are running IDE under MacPython-OS9.
			raise W.AlertError, "Can't find command-line Python"
		cmd = '"%s" "%s" ; exit' % (interp_path, file_path)
		t = Terminal.Terminal()
		t.do_script(with_command=cmd)
	
	def runselection(self):
		if self._threadstate == (0, 0):
			self._runselection()
		elif self._threadstate == (1, 1):
			self._thread.block()
			self.setthreadstate((1, 2))
		elif self._threadstate == (1, 2):
			self._thread.start()
			self.setthreadstate((1, 1))
	
	def _runselection(self):
		if self.run_with_interpreter or self.run_with_cl_interpreter:
			raise W.AlertError, "Can't run selection with Interpreter"
		globals, file, modname = self.getenvironment()
		locals = globals
		# select whole lines
		self.editgroup.editor.expandselection()
		
		# get lineno of first selected line
		selstart, selend = self.editgroup.editor.getselection()
		selstart, selend = min(selstart, selend), max(selstart, selend)
		selfirstline = self.editgroup.editor.offsettoline(selstart)
		alltext = self.editgroup.editor.get()
		pytext = alltext[selstart:selend]
		lines = string.split(pytext, '\r')
		indent = getminindent(lines)
		if indent == 1:
			classname = ''
			alllines = string.split(alltext, '\r')
			for i in range(selfirstline - 1, -1, -1):
				line = alllines[i]
				if line[:6] == 'class ':
					classname = string.split(string.strip(line[6:]))[0]
					classend = identifieRE_match(classname)
					if classend < 1:
						raise W.AlertError, "Can't find a class."
					classname = classname[:classend]
					break
				elif line and line[0] not in '\t#':
					raise W.AlertError, "Can't find a class."
			else:
				raise W.AlertError, "Can't find a class."
			if globals.has_key(classname):
				klass = globals[classname]
			else:
				raise W.AlertError, "Can't find class \"%s\"." % classname
			# add class def
			pytext = ("class %s:\n" % classname) + pytext
			selfirstline = selfirstline - 1
		elif indent > 0:
			raise W.AlertError, "Can't run indented code."
		
		# add "newlines" to fool compile/exec: 
		# now a traceback will give the right line number
		pytext = selfirstline * '\r' + pytext
		self.execstring(pytext, globals, locals, file, modname)
		if indent == 1 and globals[classname] is not klass:
			# update the class in place
			klass.__dict__.update(globals[classname].__dict__)
			globals[classname] = klass
	
	def setthreadstate(self, state):
		oldstate = self._threadstate
		if oldstate[0] <> state[0]:
			self.runbutton.settitle(runButtonLabels[state[0]])
		if oldstate[1] <> state[1]:
			self.runselbutton.settitle(runSelButtonLabels[state[1]])
		self._threadstate = state
	
	def _exec_threadwrapper(self, *args, **kwargs):
		apply(execstring, args, kwargs)
		self.setthreadstate((0, 0))
		self._thread = None
	
	def execstring(self, pytext, globals, locals, file, modname):
		tracebackwindow.hide()
		# update windows
		W.getapplication().refreshwindows()
		if self.run_as_main:
			modname = "__main__"
		if self.path:
			dir = os.path.dirname(self.path)
			savedir = os.getcwd()
			os.chdir(dir)
			sys.path.insert(0, dir)
		else:
			cwdindex = None
		try:
			if haveThreading:
				self._thread = Wthreading.Thread(os.path.basename(file), 
							self._exec_threadwrapper, pytext, globals, locals, file, self.debugging, 
							modname, self.profiling)
				self.setthreadstate((1, 1))
				self._thread.start()
			else:
				execstring(pytext, globals, locals, file, self.debugging, 
							modname, self.profiling)
		finally:
			if self.path:
				os.chdir(savedir)
				del sys.path[0]
	
	def getenvironment(self):
		if self.path:
			file = self.path
			dir = os.path.dirname(file)
			# check if we're part of a package
			modname = ""
			while os.path.exists(os.path.join(dir, "__init__.py")):
				dir, dirname = os.path.split(dir)
				modname = dirname + '.' + modname
			subname = _filename_as_modname(self.title)
			if subname is None:
				return self.globals, file, None
			if modname:
				if subname == "__init__":
					# strip trailing period
					modname = modname[:-1]
				else:
					modname = modname + subname
			else:
				modname = subname
			if sys.modules.has_key(modname):
				globals = sys.modules[modname].__dict__
				self.globals = {}
			else:
				globals = self.globals
				modname = subname
		else:
			file = '<%s>' % self.title
			globals = self.globals
			modname = file
		return globals, file, modname
	
	def write(self, stuff):
		"""for use as stdout"""
		self._buf = self._buf + stuff
		if '\n' in self._buf:
			self.flush()
	
	def flush(self):
		stuff = string.split(self._buf, '\n')
		stuff = string.join(stuff, '\r')
		end = self.editgroup.editor.ted.WEGetTextLength()
		self.editgroup.editor.ted.WESetSelection(end, end)
		self.editgroup.editor.ted.WEInsert(stuff, None, None)
		self.editgroup.editor.updatescrollbars()
		self._buf = ""
		# ? optional:
		#self.wid.SelectWindow()
	
	def getclasslist(self):
		from string import find, strip
		methodRE = re.compile(r"\r[ \t]+def ")
		findMethod = methodRE.search
		editor = self.editgroup.editor
		text = editor.get()
		list = []
		append = list.append
		functag = "func"
		classtag = "class"
		methodtag = "method"
		pos = -1
		if text[:4] == 'def ':
			append((pos + 4, functag))
			pos = 4
		while 1:
			pos = find(text, '\rdef ', pos + 1)
			if pos < 0:
				break
			append((pos + 5, functag))
		pos = -1
		if text[:6] == 'class ':
			append((pos + 6, classtag))
			pos = 6
		while 1:
			pos = find(text, '\rclass ', pos + 1)
			if pos < 0:
				break
			append((pos + 7, classtag))
		pos = 0
		while 1:
			m = findMethod(text, pos + 1)
			if m is None:
				break
			pos = m.regs[0][0]
			#pos = find(text, '\r\tdef ', pos + 1)
			append((m.regs[0][1], methodtag))
		list.sort()
		classlist = []
		methodlistappend = None
		offsetToLine = editor.ted.WEOffsetToLine
		getLineRange = editor.ted.WEGetLineRange
		append = classlist.append
		for pos, tag in list:
			lineno = offsetToLine(pos)
			lineStart, lineEnd = getLineRange(lineno)
			line = strip(text[pos:lineEnd])
			line = line[:identifieRE_match(line)]
			if tag is functag:
				append(("def " + line, lineno + 1))
				methodlistappend = None
			elif tag is classtag:
				append(["class " + line])
				methodlistappend = classlist[-1].append
			elif methodlistappend and tag is methodtag:
				methodlistappend(("def " + line, lineno + 1))
		return classlist
	
	def popselectline(self, lineno):
		self.editgroup.editor.selectline(lineno - 1)
	
	def selectline(self, lineno, charoffset = 0):
		self.editgroup.editor.selectline(lineno - 1, charoffset)
		
	def addrecentfile(self, filename):
		app = W.getapplication()
		app.addrecentfile(filename)

class _saveoptions:
	
	def __init__(self, creator, eoln):
		self.rv = None
		self.eoln = eoln
		self.w = w = W.ModalDialog((260, 160), 'Save options')
		radiobuttons = []
		w.label = W.TextBox((8, 8, 80, 18), "File creator:")
		w.ide_radio = W.RadioButton((8, 22, 160, 18), "This application", radiobuttons, self.ide_hit)
		w.interp_radio = W.RadioButton((8, 42, 160, 18), "MacPython Interpreter", radiobuttons, self.interp_hit)
		w.interpx_radio = W.RadioButton((8, 62, 160, 18), "OSX PythonW Interpreter", radiobuttons, self.interpx_hit)
		w.other_radio = W.RadioButton((8, 82, 50, 18), "Other:", radiobuttons)
		w.other_creator = W.EditText((62, 82, 40, 20), creator, self.otherselect)
		w.none_radio = W.RadioButton((8, 102, 160, 18), "None", radiobuttons, self.none_hit)
		w.cancelbutton = W.Button((-180, -30, 80, 16), "Cancel", self.cancelbuttonhit)
		w.okbutton = W.Button((-90, -30, 80, 16), "Done", self.okbuttonhit)
		w.setdefaultbutton(w.okbutton)
		if creator == 'Pyth':
			w.interp_radio.set(1)
		elif creator == W._signature:
			w.ide_radio.set(1)
		elif creator == 'PytX':
			w.interpx_radio.set(1)
		elif creator == '\0\0\0\0':
			w.none_radio.set(1)
		else:
			w.other_radio.set(1)
			
		w.eolnlabel = W.TextBox((168, 8, 80, 18), "Newline style:")
		radiobuttons = []
		w.unix_radio = W.RadioButton((168, 22, 80, 18), "Unix", radiobuttons, self.unix_hit)
		w.mac_radio = W.RadioButton((168, 42, 80, 18), "Macintosh", radiobuttons, self.mac_hit)
		w.win_radio = W.RadioButton((168, 62, 80, 18), "Windows", radiobuttons, self.win_hit)
		if self.eoln == '\n':
			w.unix_radio.set(1)
		elif self.eoln == '\r\n':
			w.win_radio.set(1)
		else:
			w.mac_radio.set(1)
		
		w.bind("cmd.", w.cancelbutton.push)
		w.open()
	
	def ide_hit(self):
		self.w.other_creator.set(W._signature)
	
	def interp_hit(self):
		self.w.other_creator.set("Pyth")
	
	def interpx_hit(self):
		self.w.other_creator.set("PytX")
	
	def none_hit(self):
		self.w.other_creator.set("\0\0\0\0")
	
	def otherselect(self, *args):
		sel_from, sel_to = self.w.other_creator.getselection()
		creator = self.w.other_creator.get()[:4]
		creator = creator + " " * (4 - len(creator))
		self.w.other_creator.set(creator)
		self.w.other_creator.setselection(sel_from, sel_to)
		self.w.other_radio.set(1)
	
	def mac_hit(self):
		self.eoln = '\r'
		
	def unix_hit(self):
		self.eoln = '\n'
		
	def win_hit(self):
		self.eoln = '\r\n'
		
	def cancelbuttonhit(self):
		self.w.close()
	
	def okbuttonhit(self):
		self.rv = (self.w.other_creator.get()[:4], self.eoln)
		self.w.close()


def SaveOptions(creator, eoln):
	s = _saveoptions(creator, eoln)
	return s.rv


def _escape(where, what) : 
	return string.join(string.split(where, what), '\\' + what)

def _makewholewordpattern(word):
	# first, escape special regex chars
	for esc in "\\[]()|.*^+$?":
		word = _escape(word, esc)
	notwordcharspat = '[^' + _wordchars + ']'
	pattern = '(' + word + ')'
	if word[0] in _wordchars:
		pattern = notwordcharspat + pattern
	if word[-1] in _wordchars:
		pattern = pattern + notwordcharspat
	return re.compile(pattern)


class SearchEngine:
	
	def __init__(self):
		self.visible = 0
		self.w = None
		self.parms = {  "find": "",
					"replace": "",
					"wrap": 1,
					"casesens": 1,
					"wholeword": 1
				}
		import MacPrefs
		prefs = MacPrefs.GetPrefs(W.getapplication().preffilepath)
		if prefs.searchengine:
			self.parms["casesens"] = prefs.searchengine.casesens
			self.parms["wrap"] = prefs.searchengine.wrap
			self.parms["wholeword"] = prefs.searchengine.wholeword
	
	def show(self):
		self.visible = 1
		if self.w:
			self.w.wid.ShowWindow()
			self.w.wid.SelectWindow()
			self.w.find.edit.select(1)
			self.w.find.edit.selectall()
			return
		self.w = W.Dialog((420, 150), "Find")
		
		self.w.find = TitledEditText((10, 4, 300, 36), "Search for:")
		self.w.replace = TitledEditText((10, 100, 300, 36), "Replace with:")
		
		self.w.boxes = W.Group((10, 50, 300, 40))
		self.w.boxes.casesens = W.CheckBox((0, 0, 100, 16), "Case sensitive")
		self.w.boxes.wholeword = W.CheckBox((0, 20, 100, 16), "Whole word")
		self.w.boxes.wrap = W.CheckBox((110, 0, 100, 16), "Wrap around")
		
		self.buttons = [	("Find",		"cmdf",	 self.find), 
					("Replace",	     "cmdr",	 self.replace), 
					("Replace all",	 None,   self.replaceall), 
					("Don't find",  "cmdd",	 self.dont), 
					("Cancel",	      "cmd.",	 self.cancel)
				]
		for i in range(len(self.buttons)):
			bounds = -90, 22 + i * 24, 80, 16
			title, shortcut, callback = self.buttons[i]
			self.w[title] = W.Button(bounds, title, callback)
			if shortcut:
				self.w.bind(shortcut, self.w[title].push)
		self.w.setdefaultbutton(self.w["Don't find"])
		self.w.find.edit.bind("<key>", self.key)
		self.w.bind("<activate>", self.activate)
		self.w.bind("<close>", self.close)
		self.w.open()
		self.setparms()
		self.w.find.edit.select(1)
		self.w.find.edit.selectall()
		self.checkbuttons()
	
	def close(self):
		self.hide()
		return -1
	
	def key(self, char, modifiers):
		self.w.find.edit.key(char, modifiers)
		self.checkbuttons()
		return 1
	
	def activate(self, onoff):
		if onoff:
			self.checkbuttons()
	
	def checkbuttons(self):
		editor = findeditor(self)
		if editor:
			if self.w.find.get():
				for title, cmd, call in self.buttons[:-2]:
					self.w[title].enable(1)
				self.w.setdefaultbutton(self.w["Find"])
			else:
				for title, cmd, call in self.buttons[:-2]:
					self.w[title].enable(0)
				self.w.setdefaultbutton(self.w["Don't find"])
		else:
			for title, cmd, call in self.buttons[:-2]:
				self.w[title].enable(0)
			self.w.setdefaultbutton(self.w["Don't find"])
	
	def find(self):
		self.getparmsfromwindow()
		if self.findnext():
			self.hide()
	
	def replace(self):
		editor = findeditor(self)
		if not editor:
			return
		if self.visible:
			self.getparmsfromwindow()
		text = editor.getselectedtext()
		find = self.parms["find"]
		if not self.parms["casesens"]:
			find = string.lower(find)
			text = string.lower(text)
		if text == find:
			self.hide()
			editor.insert(self.parms["replace"])
	
	def replaceall(self):
		editor = findeditor(self)
		if not editor:
			return
		if self.visible:
			self.getparmsfromwindow()
		W.SetCursor("watch")
		find = self.parms["find"]
		if not find:
			return
		findlen = len(find)
		replace = self.parms["replace"]
		replacelen = len(replace)
		Text = editor.get()
		if not self.parms["casesens"]:
			find = string.lower(find)
			text = string.lower(Text)
		else:
			text = Text
		newtext = ""
		pos = 0
		counter = 0
		while 1:
			if self.parms["wholeword"]:
				wholewordRE = _makewholewordpattern(find)
				match = wholewordRE.search(text, pos)
				if match:
					pos = match.start(1)
				else:
					pos = -1
			else:
				pos = string.find(text, find, pos)
			if pos < 0:
				break
			counter = counter + 1
			text = text[:pos] + replace + text[pos + findlen:]
			Text = Text[:pos] + replace + Text[pos + findlen:]
			pos = pos + replacelen
		W.SetCursor("arrow")
		if counter:
			self.hide()
			from Carbon import Res
			editor.textchanged()
			editor.selectionchanged()
			editor.set(Text)
			EasyDialogs.Message("Replaced %d occurrences" % counter)
	
	def dont(self):
		self.getparmsfromwindow()
		self.hide()
	
	def replacefind(self):
		self.replace()
		self.findnext()
	
	def setfindstring(self):
		editor = findeditor(self)
		if not editor:
			return
		find = editor.getselectedtext()
		if not find:
			return
		self.parms["find"] = find
		if self.w:
			self.w.find.edit.set(self.parms["find"])
			self.w.find.edit.selectall()
	
	def findnext(self):
		editor = findeditor(self)
		if not editor:
			return
		find = self.parms["find"]
		if not find:
			return
		text = editor.get()
		if not self.parms["casesens"]:
			find = string.lower(find)
			text = string.lower(text)
		selstart, selend = editor.getselection()
		selstart, selend = min(selstart, selend), max(selstart, selend)
		if self.parms["wholeword"]:
			wholewordRE = _makewholewordpattern(find)
			match = wholewordRE.search(text, selend)
			if match:
				pos = match.start(1)
			else:
				pos = -1
		else:
			pos = string.find(text, find, selend)
		if pos >= 0:
			editor.setselection(pos, pos + len(find))
			return 1
		elif self.parms["wrap"]:
			if self.parms["wholeword"]:
				match = wholewordRE.search(text, 0)
				if match:
					pos = match.start(1)
				else:
					pos = -1
			else:
				pos = string.find(text, find)
			if selstart > pos >= 0:
				editor.setselection(pos, pos + len(find))
				return 1
	
	def setparms(self):
		for key, value in self.parms.items():
			try:
				self.w[key].set(value)
			except KeyError:
				self.w.boxes[key].set(value)
	
	def getparmsfromwindow(self):
		if not self.w:
			return
		for key, value in self.parms.items():
			try:
				value = self.w[key].get()
			except KeyError:
				value = self.w.boxes[key].get()
			self.parms[key] = value
	
	def cancel(self):
		self.hide()
		self.setparms()
	
	def hide(self):
		if self.w:
			self.w.wid.HideWindow()
			self.visible = 0
	
	def writeprefs(self):
		import MacPrefs
		self.getparmsfromwindow()
		prefs = MacPrefs.GetPrefs(W.getapplication().preffilepath)
		prefs.searchengine.casesens = self.parms["casesens"]
		prefs.searchengine.wrap = self.parms["wrap"]
		prefs.searchengine.wholeword = self.parms["wholeword"]
		prefs.save()
	

class TitledEditText(W.Group):
	
	def __init__(self, possize, title, text = ""):
		W.Group.__init__(self, possize)
		self.title = W.TextBox((0, 0, 0, 16), title)
		self.edit = W.EditText((0, 16, 0, 0), text)
	
	def set(self, value):
		self.edit.set(value)
	
	def get(self):
		return self.edit.get()


class ClassFinder(W.PopupWidget):
	
	def click(self, point, modifiers):
		W.SetCursor("watch")
		self.set(self._parentwindow.getclasslist())
		W.PopupWidget.click(self, point, modifiers)


def getminindent(lines):
	indent = -1
	for line in lines:
		stripped = string.strip(line)
		if not stripped or stripped[0] == '#':
			continue
		if indent < 0 or line[:indent] <> indent * '\t':
			indent = 0
			for c in line:
				if c <> '\t':
					break
				indent = indent + 1
	return indent


def getoptionkey():
	return not not ord(Evt.GetKeys()[7]) & 0x04


def execstring(pytext, globals, locals, filename="<string>", debugging=0, 
			modname="__main__", profiling=0):
	if debugging:
		import PyDebugger, bdb
		BdbQuit = bdb.BdbQuit
	else:
		BdbQuit = 'BdbQuitDummyException'
	pytext = string.split(pytext, '\r')
	pytext = string.join(pytext, '\n') + '\n'
	W.SetCursor("watch")
	globals['__name__'] = modname
	globals['__file__'] = filename
	sys.argv = [filename]
	try:
		code = compile(pytext, filename, "exec")
	except:
		# XXXX BAAAADDD.... We let tracebackwindow decide to treat SyntaxError 
		# special. That's wrong because THIS case is special (could be literal 
		# overflow!) and SyntaxError could mean we need a traceback (syntax error 
		# in imported module!!!
		tracebackwindow.traceback(1, filename)
		return
	try:
		if debugging:
			if haveThreading:
				lock = Wthreading.Lock()
				lock.acquire()
				PyDebugger.startfromhere()
				lock.release()
			else:
				PyDebugger.startfromhere()
		elif not haveThreading:
			if hasattr(MacOS, 'EnableAppswitch'):
				MacOS.EnableAppswitch(0)
		try:
			if profiling:
				import profile, ProfileBrowser
				p = profile.Profile()
				p.set_cmd(filename)
				try:
					p.runctx(code, globals, locals)
				finally:
					import pstats
					
					stats = pstats.Stats(p)
					ProfileBrowser.ProfileBrowser(stats)
			else:
				exec code in globals, locals
		finally:
			if not haveThreading:
				if hasattr(MacOS, 'EnableAppswitch'):
					MacOS.EnableAppswitch(-1)
	except W.AlertError, detail:
		raise W.AlertError, detail
	except (KeyboardInterrupt, BdbQuit):
		pass
	except SystemExit, arg:
		if arg.code:
			sys.stderr.write("Script exited with status code: %s\n" % repr(arg.code))
	except:
		if haveThreading:
			import continuation
			lock = Wthreading.Lock()
			lock.acquire()
		if debugging:
			sys.settrace(None)
			PyDebugger.postmortem(sys.exc_type, sys.exc_value, sys.exc_traceback)
			return
		else:
			tracebackwindow.traceback(1, filename)
		if haveThreading:
			lock.release()
	if debugging:
		sys.settrace(None)
		PyDebugger.stop()


_identifieRE = re.compile(r"[A-Za-z_][A-Za-z_0-9]*")

def identifieRE_match(str):
	match = _identifieRE.match(str)
	if not match:
		return -1
	return match.end()

def _filename_as_modname(fname):
	if fname[-3:] == '.py':
		modname = fname[:-3]
		match = _identifieRE.match(modname)
		if match and match.start() == 0 and match.end() == len(modname):
			return string.join(string.split(modname, '.'), '_')

def findeditor(topwindow, fromtop = 0):
	wid = MyFrontWindow()
	if not fromtop:
		if topwindow.w and wid == topwindow.w.wid:
			wid = topwindow.w.wid.GetNextWindow()
	if not wid:
		return
	app = W.getapplication()
	if app._windows.has_key(wid): # KeyError otherwise can happen in RoboFog :-(
		window = W.getapplication()._windows[wid]
	else:
		return
	if not isinstance(window, Editor):
		return
	return window.editgroup.editor


class _EditorDefaultSettings:
	
	def __init__(self):
		self.template = "%s, %d point"
		self.fontsettings, self.tabsettings, self.windowsize = geteditorprefs()
		self.w = W.Dialog((328, 120), "Editor default settings")
		self.w.setfontbutton = W.Button((8, 8, 80, 16), "Set font\xc9", self.dofont)
		self.w.fonttext = W.TextBox((98, 10, -8, 14), self.template % (self.fontsettings[0], self.fontsettings[2]))
		
		self.w.picksizebutton = W.Button((8, 50, 80, 16), "Front window", self.picksize)
		self.w.xsizelabel = W.TextBox((98, 32, 40, 14), "Width:")
		self.w.ysizelabel = W.TextBox((148, 32, 40, 14), "Height:")
		self.w.xsize = W.EditText((98, 48, 40, 20), `self.windowsize[0]`)
		self.w.ysize = W.EditText((148, 48, 40, 20), `self.windowsize[1]`)
		
		self.w.cancelbutton = W.Button((-180, -26, 80, 16), "Cancel", self.cancel)
		self.w.okbutton = W.Button((-90, -26, 80, 16), "Done", self.ok)
		self.w.setdefaultbutton(self.w.okbutton)
		self.w.bind('cmd.', self.w.cancelbutton.push)
		self.w.open()
	
	def picksize(self):
		app = W.getapplication()
		editor = findeditor(self)
		if editor is not None:
			width, height = editor._parentwindow._bounds[2:]
			self.w.xsize.set(`width`)
			self.w.ysize.set(`height`)
		else:
			raise W.AlertError, "No edit window found"
	
	def dofont(self):
		import FontSettings
		settings = FontSettings.FontDialog(self.fontsettings, self.tabsettings)
		if settings:
			self.fontsettings, self.tabsettings = settings
			sys.exc_traceback = None
			self.w.fonttext.set(self.template % (self.fontsettings[0], self.fontsettings[2]))
	
	def close(self):
		self.w.close()
		del self.w
	
	def cancel(self):
		self.close()
	
	def ok(self):
		try:
			width = string.atoi(self.w.xsize.get())
		except:
			self.w.xsize.select(1)
			self.w.xsize.selectall()
			raise W.AlertError, "Bad number for window width"
		try:
			height = string.atoi(self.w.ysize.get())
		except:
			self.w.ysize.select(1)
			self.w.ysize.selectall()
			raise W.AlertError, "Bad number for window height"
		self.windowsize = width, height
		seteditorprefs(self.fontsettings, self.tabsettings, self.windowsize)
		self.close()

def geteditorprefs():
	import MacPrefs
	prefs = MacPrefs.GetPrefs(W.getapplication().preffilepath)
	try:
		fontsettings = prefs.pyedit.fontsettings
		tabsettings = prefs.pyedit.tabsettings
		windowsize = prefs.pyedit.windowsize
	except:
		fontsettings = prefs.pyedit.fontsettings = ("Geneva", 0, 10, (0, 0, 0))
		tabsettings = prefs.pyedit.tabsettings = (8, 1)
		windowsize = prefs.pyedit.windowsize = (500, 250)
		sys.exc_traceback = None
	return fontsettings, tabsettings, windowsize

def seteditorprefs(fontsettings, tabsettings, windowsize):
	import MacPrefs
	prefs = MacPrefs.GetPrefs(W.getapplication().preffilepath)
	prefs.pyedit.fontsettings = fontsettings
	prefs.pyedit.tabsettings = tabsettings
	prefs.pyedit.windowsize = windowsize
	prefs.save()

_defaultSettingsEditor = None

def EditorDefaultSettings():
	global _defaultSettingsEditor
	if _defaultSettingsEditor is None or not hasattr(_defaultSettingsEditor, "w"):
		_defaultSettingsEditor = _EditorDefaultSettings()
	else:
		_defaultSettingsEditor.w.select()

def resolvealiases(path):
	try:
		fsr, d1, d2 = File.FSResolveAliasFile(path, 1)
		path = fsr.as_pathname()
		return path
	except (File.Error, ValueError), (error, str):
		if error <> -120:
			raise
		dir, file = os.path.split(path)
		return os.path.join(resolvealiases(dir), file)

searchengine = SearchEngine()
tracebackwindow = Wtraceback.TraceBack()