cpython/Mac/Unsupported/twit/mactwit_browser.py

430 lines
13 KiB
Python

"""A simple Mac-only browse utility to peek at the inner data structures of Python."""
# Minor modifications by Jack to facilitate incorporation in twit.
# june 1996
# Written by Just van Rossum <just@knoware.nl>, please send comments/improvements.
# Loosely based on Jack Jansens's PICTbrowse.py, but depends on his fabulous FrameWork.py
# XXX Some parts are *very* poorly solved. Will fix. Guido has to check if all the
# XXX "python-peeking" is done correctly. I kindof reverse-engineered it ;-)
# disclaimer: although I happen to be the brother of Python's father, programming is
# not what I've been trained to do. So don't be surprised if you find anything that's not
# as nice as it could be...
# XXX to do:
# Arrow key support
# Copy & Paste?
# MAIN_TEXT item should not contain (type); should be below or something.
# MAIN_TEXT item should check if a string is binary or not: convert to '/000' style
# or convert newlines.
version = "1.0"
import FrameWork
import EasyDialogs
import Dlg
import Res
import Qd
import List
import sys
from Types import *
from QuickDraw import *
import string
import time
import os
# The initial object to start browsing with. Can be anything, but 'sys' makes kindof sense.
start_object = sys
# Resource definitions
ID_MAIN = 503
NUM_LISTS = 4 # the number of lists used. could be changed, but the dlg item numbers should be consistent
MAIN_TITLE = 3 # this is only the first text item, the other three ID's should be 5, 7 and 9
MAIN_LIST = 4 # this is only the first list, the other three ID's should be 6, 8 and 10
MAIN_TEXT = 11
MAIN_LEFT = 1
MAIN_RIGHT = 2
MAIN_RESET = 12
MAIN_CLOSE = 13
MAIN_LINE = 14
def Initialize():
# this bit ensures that this module will also work as an applet if the resources are
# in the resource fork of the applet
# stolen from Jack, so it should work(?!;-)
try:
# if this doesn't raise an error, we are an applet containing the necessary resources
# so we don't have to bother opening the resource file
dummy = Res.GetResource('DLOG', ID_MAIN)
except Res.Error:
savewd = os.getcwd()
ourparentdir = os.path.split(openresfile.func_code.co_filename)[0]
os.chdir(ourparentdir)
try:
Res.FSpOpenResFile("mactwit_browse.rsrc", 1)
except Res.Error, arg:
EasyDialogs.Message("Cannot open mactwit_browse.rsrc: "+arg[1])
sys.exit(1)
os.chdir(savewd)
def main():
Initialize()
PythonBrowse()
# this is all there is to it to make an application.
class PythonBrowse(FrameWork.Application):
def __init__(self):
FrameWork.Application.__init__(self)
VarBrowser(self).open(start_object)
self.mainloop()
def do_about(self, id, item, window, event):
EasyDialogs.Message(self.__class__.__name__ + " version " + version + "\rby Just van Rossum")
def quit(self, *args):
raise self
class MyList:
def __init__(self, wid, rect, itemnum):
# wid is the window (dialog) where our list is going to be in
# rect is it's item rectangle (as in dialog item)
# itemnum is the itemnumber in the dialog
self.rect = rect
rect2 = rect[0]+1, rect[1]+1, rect[2]-16, rect[3]-1 # Scroll bar space, that's 15 + 1, Jack!
self.list = List.LNew(rect2, (0, 0, 1, 0), (0,0), 0, wid,
0, 1, 0, 1)
self.wid = wid
self.active = 0
self.itemnum = itemnum
def setcontent(self, content, title = ""):
# first, gather some stuff
keylist = []
valuelist = []
thetype = type(content)
if thetype == DictType:
keylist = content.keys()
keylist.sort()
for key in keylist:
valuelist.append(content[key])
elif thetype == ListType:
keylist = valuelist = content
elif thetype == TupleType:
keylist = valuelist = []
for i in content:
keylist.append(i)
else:
# XXX help me! is all this correct? is there more I should consider???
# XXX is this a sensible way to do it in the first place????
# XXX I'm not familiar enough with Python's guts to be sure. GUIDOOOOO!!!
if hasattr(content, "__dict__"):
keylist = keylist + content.__dict__.keys()
if hasattr(content, "__methods__"):
keylist = keylist + content.__methods__
if hasattr(content, "__members__"):
keylist = keylist + content.__members__
if hasattr(content, "__class__"):
keylist.append("__class__")
if hasattr(content, "__bases__"):
keylist.append("__bases__")
if hasattr(content, "__name__"):
title = content.__name__
if "__name__" not in keylist:
keylist.append("__name__")
keylist.sort()
for key in keylist:
valuelist.append(getattr(content, key))
if content <> None:
title = title + "\r" + cleantype(content)
# now make that list!
tp, h, rect = self.wid.GetDialogItem(self.itemnum - 1)
Dlg.SetDialogItemText(h, title[:255])
self.list.LDelRow(0, 1)
self.list.LSetDrawingMode(0)
self.list.LAddRow(len(keylist), 0)
for i in range(len(keylist)):
self.list.LSetCell(str(keylist[i]), (0, i))
self.list.LSetDrawingMode(1)
self.list.LUpdate(self.wid.GetWindowPort().visRgn)
self.content = content
self.keylist = keylist
self.valuelist = valuelist
self.title = title
# draw a frame around the list, List Manager doesn't do that
def drawframe(self):
Qd.SetPort(self.wid)
Qd.FrameRect(self.rect)
rect2 = Qd.InsetRect(self.rect, -3, -3)
save = Qd.GetPenState()
Qd.PenSize(2, 2)
if self.active:
Qd.PenPat(Qd.qd.black)
else:
Qd.PenPat(Qd.qd.white)
# draw (or erase) an extra frame to indicate this is the acive list (or not)
Qd.FrameRect(rect2)
Qd.SetPenState(save)
class VarBrowser(FrameWork.DialogWindow):
def open(self, start_object, title = ""):
FrameWork.DialogWindow.open(self, ID_MAIN)
if title <> "":
windowtitle = self.wid.GetWTitle()
self.wid.SetWTitle(windowtitle + " >> " + title)
else:
if hasattr(start_object, "__name__"):
windowtitle = self.wid.GetWTitle()
self.wid.SetWTitle(windowtitle + " >> " + str(getattr(start_object, "__name__")) )
self.SetPort()
Qd.TextFont(3)
Qd.TextSize(9)
self.lists = []
self.listitems = []
for i in range(NUM_LISTS):
self.listitems.append(MAIN_LIST + 2 * i) # dlg item numbers... have to be consistent
for i in self.listitems:
tp, h, rect = self.wid.GetDialogItem(i)
list = MyList(self.wid, rect, i)
self.lists.append(list)
self.leftover = []
self.rightover = []
self.setup(start_object, title)
def close(self):
self.lists = []
self.listitems = []
self.do_postclose()
def setup(self, start_object, title = ""):
# here we set the starting point for our expedition
self.start = start_object
self.lists[0].setcontent(start_object, title)
for list in self.lists[1:]:
list.setcontent(None)
def do_listhit(self, event, item):
(what, message, when, where, modifiers) = event
Qd.SetPort(self.wid)
where = Qd.GlobalToLocal(where)
for list in self.lists:
list.active = 0
list = self.lists[self.listitems.index(item)]
list.active = 1
for l in self.lists:
l.drawframe()
point = (0,0)
ok, point = list.list.LGetSelect(1, point)
if ok:
oldsel = point[1]
else:
oldsel = -1
# This should be: list.list.LClick(where, modifiers)
# Since the selFlags field of the list is not accessible from Python I have to do it like this.
# The effect is that you can't select more items by using shift or command.
list.list.LClick(where, 0)
index = self.listitems.index(item) + 1
point = (0,0)
ok, point = list.list.LGetSelect(1, point)
if oldsel == point[1]:
return # selection didn't change, do nothing.
if not ok:
for i in range(index, len(self.listitems)):
self.lists[i].setcontent(None)
self.rightover = []
return
if point[1] >= len(list.keylist):
return # XXX is this still necessary? is ok really true?
key = str(list.keylist[point[1]])
value = list.valuelist[point[1]]
self.settextitem("")
thetype = type(value)
if thetype == ListType or \
thetype == TupleType or \
thetype == DictType or \
hasattr(value, "__dict__") or \
hasattr(value, "__methods__") or \
hasattr(value, "__members__"): # XXX or, or... again: did I miss something?
if index >= len(self.listitems):
# we've reached the right side of our dialog. move everything to the left
# (by pushing the rightbutton...)
self.do_rightbutton(1)
index = index - 1
newlist = self.lists[index]
newlist.setcontent(value, key)
else:
index = index - 1
self.settextitem( str(value) + "\r" + cleantype(value))
for i in range(index + 1, len(self.listitems)):
self.lists[i].setcontent(None)
self.rightover = []
# helper to set the big text item at the bottom of the dialog.
def settextitem(self, text):
tp, h, rect = self.wid.GetDialogItem(MAIN_TEXT)
Dlg.SetDialogItemText(h, text[:255])
def do_rawupdate(self, window, event):
Qd.SetPort(self.wid)
iType, iHandle, iRect = window.GetDialogItem(MAIN_LINE)
Qd.FrameRect(iRect)
for list in self.lists:
Qd.FrameRect(list.rect)
if list.active:
# see MyList.drawframe
rect2 = Qd.InsetRect(list.rect, -3, -3)
save = Qd.GetPenState()
Qd.PenSize(2, 2)
Qd.FrameRect(rect2)
Qd.SetPenState(save)
for list in self.lists:
list.list.LUpdate(self.wid.GetWindowPort().visRgn)
def do_activate(self, activate, event):
for list in self.lists:
list.list.LActivate(activate)
# scroll everything one 'unit' to the left
# XXX I don't like the way this works. Too many 'manual' assignments
def do_rightbutton(self, force = 0):
if not force and self.rightover == []:
return
self.scroll(-1)
point = (0, 0)
ok, point = self.lists[0].list.LGetSelect(1, point)
self.leftover.append((point, self.lists[0].content, self.lists[0].title, self.lists[0].active))
for i in range(len(self.lists)-1):
point = (0, 0)
ok, point = self.lists[i+1].list.LGetSelect(1, point)
self.lists[i].setcontent(self.lists[i+1].content, self.lists[i+1].title)
self.lists[i].list.LSetSelect(ok, point)
self.lists[i].list.LAutoScroll()
self.lists[i].active = self.lists[i+1].active
self.lists[i].drawframe()
if len(self.rightover) > 0:
point, content, title, active = self.rightover[-1]
self.lists[-1].setcontent(content, title)
self.lists[-1].list.LSetSelect(1, point)
self.lists[-1].list.LAutoScroll()
self.lists[-1].active = active
self.lists[-1].drawframe()
del self.rightover[-1]
else:
self.lists[-1].setcontent(None)
self.lists[-1].active = 0
for list in self.lists:
list.drawframe()
# scroll everything one 'unit' to the right
def do_leftbutton(self):
if self.leftover == []:
return
self.scroll(1)
if self.lists[-1].content <> None:
point = (0, 0)
ok, point = self.lists[-1].list.LGetSelect(1, point)
self.rightover.append((point, self.lists[-1].content, self.lists[-1].title, self.lists[-1].active ))
for i in range(len(self.lists)-1, 0, -1):
point = (0, 0)
ok, point = self.lists[i-1].list.LGetSelect(1, point)
self.lists[i].setcontent(self.lists[i-1].content, self.lists[i-1].title)
self.lists[i].list.LSetSelect(ok, point)
self.lists[i].list.LAutoScroll()
self.lists[i].active = self.lists[i-1].active
self.lists[i].drawframe()
if len(self.leftover) > 0:
point, content, title, active = self.leftover[-1]
self.lists[0].setcontent(content, title)
self.lists[0].list.LSetSelect(1, point)
self.lists[0].list.LAutoScroll()
self.lists[0].active = active
self.lists[0].drawframe()
del self.leftover[-1]
else:
self.lists[0].setcontent(None)
self.lists[0].active = 0
# create some visual feedback when 'scrolling' the lists to the left or to the right
def scroll(self, leftright): # leftright should be 1 or -1
# first, build a region containing all list rectangles
myregion = Qd.NewRgn()
mylastregion = Qd.NewRgn()
for list in self.lists:
AddRect2Rgn(list.rect, myregion)
AddRect2Rgn(list.rect, mylastregion)
# set the pen, but save it's state first
self.SetPort()
save = Qd.GetPenState()
Qd.PenPat(Qd.qd.gray)
Qd.PenMode(srcXor)
# how far do we have to scroll?
distance = self.lists[1].rect[0] - self.lists[0].rect[0]
step = 30
lasttime = time.clock() # for delay
# do it
for i in range(0, distance, step):
if i <> 0:
Qd.FrameRgn(mylastregion) # erase last region
Qd.OffsetRgn(mylastregion, step * leftright, 0)
# draw gray region
Qd.FrameRgn(myregion)
Qd.OffsetRgn(myregion, step * leftright, 0)
while time.clock() - lasttime < 0.05:
pass # delay
lasttime = time.clock()
# clean up after your dog
Qd.FrameRgn(mylastregion)
Qd.SetPenState(save)
def reset(self):
for list in self.lists:
point = (0,0)
ok, point = list.list.LGetSelect(1, point)
if ok:
sel = list.keylist[point[1]]
list.setcontent(list.content, list.title)
if ok:
list.list.LSetSelect(1, (0, list.keylist.index(sel)))
list.list.LAutoScroll()
def do_itemhit(self, item, event):
if item in self.listitems:
self.do_listhit(event, item)
elif item == MAIN_LEFT:
self.do_leftbutton()
elif item == MAIN_RIGHT:
self.do_rightbutton()
elif item == MAIN_CLOSE:
self.close()
elif item == MAIN_RESET:
self.reset()
# helper function that returns a short string containing the type of an arbitrary object
# eg: cleantype("wat is dit nu weer?") -> '(string)'
def cleantype(obj):
# type() typically returns something like: <type 'string'>
items = string.split(str(type(obj)), "'")
if len(items) == 3:
return '(' + items[1] + ')'
else:
# just in case, I don't know.
return str(type(obj))
# helper for VarBrowser.scroll
def AddRect2Rgn(theRect, theRgn):
rRgn = Qd.NewRgn()
Qd.RectRgn(rRgn, theRect)
Qd.UnionRgn(rRgn, theRgn, theRgn)
if __name__ == "__main__":
main()