Jack Jansen | 4892ab7 | 1996-09-24 15:35:50 +0000 | [diff] [blame] | 1 | """A simple Mac-only browse utility to peek at the inner data structures of Python.""" |
| 2 | # Minor modifications by Jack to facilitate incorporation in twit. |
| 3 | |
| 4 | # june 1996 |
| 5 | # Written by Just van Rossum <just@knoware.nl>, please send comments/improvements. |
| 6 | # Loosely based on Jack Jansens's PICTbrowse.py, but depends on his fabulous FrameWork.py |
| 7 | # XXX Some parts are *very* poorly solved. Will fix. Guido has to check if all the |
| 8 | # XXX "python-peeking" is done correctly. I kindof reverse-engineered it ;-) |
| 9 | |
| 10 | # disclaimer: although I happen to be the brother of Python's father, programming is |
| 11 | # not what I've been trained to do. So don't be surprised if you find anything that's not |
| 12 | # as nice as it could be... |
| 13 | |
| 14 | # XXX to do: |
| 15 | # Arrow key support |
| 16 | # Copy & Paste? |
| 17 | # MAIN_TEXT item should not contain (type); should be below or something. |
| 18 | # MAIN_TEXT item should check if a string is binary or not: convert to '/000' style |
| 19 | # or convert newlines. |
| 20 | |
| 21 | version = "1.0" |
| 22 | |
| 23 | import FrameWork |
| 24 | import EasyDialogs |
| 25 | import Dlg |
| 26 | import Res |
| 27 | import Qd |
| 28 | import List |
| 29 | import sys |
Jack Jansen | b280e2b | 1996-12-23 17:11:00 +0000 | [diff] [blame] | 30 | from Types import * |
Jack Jansen | 4892ab7 | 1996-09-24 15:35:50 +0000 | [diff] [blame] | 31 | from QuickDraw import * |
| 32 | import string |
| 33 | import time |
| 34 | import os |
| 35 | |
| 36 | # The initial object to start browsing with. Can be anything, but 'sys' makes kindof sense. |
| 37 | start_object = sys |
| 38 | |
| 39 | # Resource definitions |
Jack Jansen | b280e2b | 1996-12-23 17:11:00 +0000 | [diff] [blame] | 40 | ID_MAIN = 503 |
Jack Jansen | 4892ab7 | 1996-09-24 15:35:50 +0000 | [diff] [blame] | 41 | NUM_LISTS = 4 # the number of lists used. could be changed, but the dlg item numbers should be consistent |
| 42 | MAIN_TITLE = 3 # this is only the first text item, the other three ID's should be 5, 7 and 9 |
| 43 | MAIN_LIST = 4 # this is only the first list, the other three ID's should be 6, 8 and 10 |
| 44 | MAIN_TEXT = 11 |
| 45 | MAIN_LEFT = 1 |
| 46 | MAIN_RIGHT = 2 |
| 47 | MAIN_RESET = 12 |
| 48 | MAIN_CLOSE = 13 |
| 49 | MAIN_LINE = 14 |
| 50 | |
| 51 | def Initialize(): |
| 52 | # this bit ensures that this module will also work as an applet if the resources are |
| 53 | # in the resource fork of the applet |
| 54 | # stolen from Jack, so it should work(?!;-) |
| 55 | try: |
| 56 | # if this doesn't raise an error, we are an applet containing the necessary resources |
| 57 | # so we don't have to bother opening the resource file |
| 58 | dummy = Res.GetResource('DLOG', ID_MAIN) |
| 59 | except Res.Error: |
| 60 | savewd = os.getcwd() |
| 61 | ourparentdir = os.path.split(openresfile.func_code.co_filename)[0] |
| 62 | os.chdir(ourparentdir) |
| 63 | try: |
| 64 | Res.OpenResFile("mactwit_browse.rsrc") |
| 65 | except Res.Error, arg: |
| 66 | EasyDialogs.Message("Cannot open mactwit_browse.rsrc: "+arg[1]) |
| 67 | sys.exit(1) |
| 68 | os.chdir(savewd) |
| 69 | |
| 70 | def main(): |
| 71 | Initialize() |
| 72 | PythonBrowse() |
| 73 | |
| 74 | # this is all there is to it to make an application. |
| 75 | class PythonBrowse(FrameWork.Application): |
| 76 | def __init__(self): |
| 77 | FrameWork.Application.__init__(self) |
| 78 | VarBrowser(self).open(start_object) |
| 79 | self.mainloop() |
| 80 | |
| 81 | def do_about(self, id, item, window, event): |
| 82 | EasyDialogs.Message(self.__class__.__name__ + " version " + version + "\rby Just van Rossum") |
| 83 | |
| 84 | def quit(self, *args): |
| 85 | raise self |
| 86 | |
| 87 | class MyList: |
| 88 | def __init__(self, wid, rect, itemnum): |
| 89 | # wid is the window (dialog) where our list is going to be in |
| 90 | # rect is it's item rectangle (as in dialog item) |
| 91 | # itemnum is the itemnumber in the dialog |
| 92 | self.rect = rect |
| 93 | rect2 = rect[0]+1, rect[1]+1, rect[2]-16, rect[3]-1 # Scroll bar space, that's 15 + 1, Jack! |
| 94 | self.list = List.LNew(rect2, (0, 0, 1, 0), (0,0), 0, wid, |
| 95 | 0, 1, 0, 1) |
| 96 | self.wid = wid |
| 97 | self.active = 0 |
| 98 | self.itemnum = itemnum |
| 99 | |
| 100 | def setcontent(self, content, title = ""): |
| 101 | # first, gather some stuff |
| 102 | keylist = [] |
| 103 | valuelist = [] |
| 104 | thetype = type(content) |
| 105 | if thetype == DictType: |
| 106 | keylist = content.keys() |
| 107 | keylist.sort() |
| 108 | for key in keylist: |
| 109 | valuelist.append(content[key]) |
| 110 | elif thetype == ListType: |
| 111 | keylist = valuelist = content |
| 112 | elif thetype == TupleType: |
| 113 | |
| 114 | keylist = valuelist = [] |
| 115 | for i in content: |
| 116 | keylist.append(i) |
| 117 | else: |
| 118 | # XXX help me! is all this correct? is there more I should consider??? |
| 119 | # XXX is this a sensible way to do it in the first place???? |
| 120 | # XXX I'm not familiar enough with Python's guts to be sure. GUIDOOOOO!!! |
| 121 | if hasattr(content, "__dict__"): |
| 122 | keylist = keylist + content.__dict__.keys() |
| 123 | if hasattr(content, "__methods__"): |
| 124 | keylist = keylist + content.__methods__ |
| 125 | if hasattr(content, "__members__"): |
| 126 | keylist = keylist + content.__members__ |
| 127 | if hasattr(content, "__class__"): |
| 128 | keylist.append("__class__") |
| 129 | if hasattr(content, "__bases__"): |
| 130 | keylist.append("__bases__") |
| 131 | if hasattr(content, "__name__"): |
| 132 | title = content.__name__ |
| 133 | if "__name__" not in keylist: |
| 134 | keylist.append("__name__") |
| 135 | keylist.sort() |
| 136 | for key in keylist: |
| 137 | valuelist.append(getattr(content, key)) |
| 138 | if content <> None: |
| 139 | title = title + "\r" + cleantype(content) |
| 140 | # now make that list! |
| 141 | tp, h, rect = self.wid.GetDialogItem(self.itemnum - 1) |
| 142 | Dlg.SetDialogItemText(h, title[:255]) |
| 143 | self.list.LDelRow(0, 1) |
| 144 | self.list.LSetDrawingMode(0) |
| 145 | self.list.LAddRow(len(keylist), 0) |
| 146 | for i in range(len(keylist)): |
| 147 | self.list.LSetCell(str(keylist[i]), (0, i)) |
| 148 | self.list.LSetDrawingMode(1) |
| 149 | self.list.LUpdate(self.wid.GetWindowPort().visRgn) |
| 150 | self.content = content |
| 151 | self.keylist = keylist |
| 152 | self.valuelist = valuelist |
| 153 | self.title = title |
| 154 | |
| 155 | # draw a frame around the list, List Manager doesn't do that |
| 156 | def drawframe(self): |
| 157 | Qd.SetPort(self.wid) |
| 158 | Qd.FrameRect(self.rect) |
| 159 | rect2 = Qd.InsetRect(self.rect, -3, -3) |
| 160 | save = Qd.GetPenState() |
| 161 | Qd.PenSize(2, 2) |
| 162 | if self.active: |
| 163 | Qd.PenPat(Qd.qd.black) |
| 164 | else: |
| 165 | Qd.PenPat(Qd.qd.white) |
| 166 | # draw (or erase) an extra frame to indicate this is the acive list (or not) |
| 167 | Qd.FrameRect(rect2) |
| 168 | Qd.SetPenState(save) |
| 169 | |
| 170 | |
| 171 | |
| 172 | class VarBrowser(FrameWork.DialogWindow): |
| 173 | def open(self, start_object, title = ""): |
| 174 | FrameWork.DialogWindow.open(self, ID_MAIN) |
| 175 | if title <> "": |
| 176 | windowtitle = self.wid.GetWTitle() |
| 177 | self.wid.SetWTitle(windowtitle + " >> " + title) |
| 178 | else: |
| 179 | if hasattr(start_object, "__name__"): |
| 180 | windowtitle = self.wid.GetWTitle() |
| 181 | self.wid.SetWTitle(windowtitle + " >> " + str(getattr(start_object, "__name__")) ) |
| 182 | |
| 183 | self.SetPort() |
| 184 | Qd.TextFont(3) |
| 185 | Qd.TextSize(9) |
| 186 | self.lists = [] |
| 187 | self.listitems = [] |
| 188 | for i in range(NUM_LISTS): |
| 189 | self.listitems.append(MAIN_LIST + 2 * i) # dlg item numbers... have to be consistent |
| 190 | for i in self.listitems: |
| 191 | tp, h, rect = self.wid.GetDialogItem(i) |
| 192 | list = MyList(self.wid, rect, i) |
| 193 | self.lists.append(list) |
| 194 | self.leftover = [] |
| 195 | self.rightover = [] |
| 196 | self.setup(start_object, title) |
| 197 | |
| 198 | def close(self): |
| 199 | self.lists = [] |
| 200 | self.listitems = [] |
| 201 | self.do_postclose() |
| 202 | |
| 203 | def setup(self, start_object, title = ""): |
| 204 | # here we set the starting point for our expedition |
| 205 | self.start = start_object |
| 206 | self.lists[0].setcontent(start_object, title) |
| 207 | for list in self.lists[1:]: |
| 208 | list.setcontent(None) |
| 209 | |
| 210 | def do_listhit(self, event, item): |
| 211 | (what, message, when, where, modifiers) = event |
| 212 | Qd.SetPort(self.wid) |
| 213 | where = Qd.GlobalToLocal(where) |
| 214 | for list in self.lists: |
| 215 | list.active = 0 |
| 216 | list = self.lists[self.listitems.index(item)] |
| 217 | list.active = 1 |
| 218 | for l in self.lists: |
| 219 | l.drawframe() |
| 220 | |
| 221 | point = (0,0) |
| 222 | ok, point = list.list.LGetSelect(1, point) |
| 223 | if ok: |
| 224 | oldsel = point[1] |
| 225 | else: |
| 226 | oldsel = -1 |
| 227 | # This should be: list.list.LClick(where, modifiers) |
| 228 | # Since the selFlags field of the list is not accessible from Python I have to do it like this. |
| 229 | # The effect is that you can't select more items by using shift or command. |
| 230 | list.list.LClick(where, 0) |
| 231 | |
| 232 | index = self.listitems.index(item) + 1 |
| 233 | point = (0,0) |
| 234 | ok, point = list.list.LGetSelect(1, point) |
| 235 | if oldsel == point[1]: |
| 236 | return # selection didn't change, do nothing. |
| 237 | if not ok: |
| 238 | for i in range(index, len(self.listitems)): |
| 239 | self.lists[i].setcontent(None) |
| 240 | self.rightover = [] |
| 241 | return |
| 242 | |
| 243 | if point[1] >= len(list.keylist): |
| 244 | return # XXX is this still necessary? is ok really true? |
| 245 | key = str(list.keylist[point[1]]) |
| 246 | value = list.valuelist[point[1]] |
| 247 | |
| 248 | self.settextitem("") |
| 249 | thetype = type(value) |
| 250 | if thetype == ListType or \ |
| 251 | thetype == TupleType or \ |
| 252 | thetype == DictType or \ |
| 253 | hasattr(value, "__dict__") or \ |
| 254 | hasattr(value, "__methods__") or \ |
| 255 | hasattr(value, "__members__"): # XXX or, or... again: did I miss something? |
| 256 | if index >= len(self.listitems): |
| 257 | # we've reached the right side of our dialog. move everything to the left |
| 258 | # (by pushing the rightbutton...) |
| 259 | self.do_rightbutton(1) |
| 260 | index = index - 1 |
| 261 | newlist = self.lists[index] |
| 262 | newlist.setcontent(value, key) |
| 263 | else: |
| 264 | index = index - 1 |
| 265 | self.settextitem( str(value) + "\r" + cleantype(value)) |
| 266 | for i in range(index + 1, len(self.listitems)): |
| 267 | self.lists[i].setcontent(None) |
| 268 | self.rightover = [] |
| 269 | |
| 270 | # helper to set the big text item at the bottom of the dialog. |
| 271 | def settextitem(self, text): |
| 272 | tp, h, rect = self.wid.GetDialogItem(MAIN_TEXT) |
| 273 | Dlg.SetDialogItemText(h, text[:255]) |
| 274 | |
| 275 | def do_rawupdate(self, window, event): |
| 276 | Qd.SetPort(self.wid) |
| 277 | iType, iHandle, iRect = window.GetDialogItem(MAIN_LINE) |
| 278 | Qd.FrameRect(iRect) |
| 279 | for list in self.lists: |
| 280 | Qd.FrameRect(list.rect) |
| 281 | if list.active: |
| 282 | # see MyList.drawframe |
| 283 | rect2 = Qd.InsetRect(list.rect, -3, -3) |
| 284 | save = Qd.GetPenState() |
| 285 | Qd.PenSize(2, 2) |
| 286 | Qd.FrameRect(rect2) |
| 287 | Qd.SetPenState(save) |
| 288 | for list in self.lists: |
| 289 | list.list.LUpdate(self.wid.GetWindowPort().visRgn) |
| 290 | |
| 291 | def do_activate(self, activate, event): |
| 292 | for list in self.lists: |
| 293 | list.list.LActivate(activate) |
| 294 | |
| 295 | # scroll everything one 'unit' to the left |
| 296 | # XXX I don't like the way this works. Too many 'manual' assignments |
| 297 | def do_rightbutton(self, force = 0): |
| 298 | if not force and self.rightover == []: |
| 299 | return |
| 300 | self.scroll(-1) |
| 301 | point = (0, 0) |
| 302 | ok, point = self.lists[0].list.LGetSelect(1, point) |
| 303 | self.leftover.append(point, self.lists[0].content, self.lists[0].title, self.lists[0].active) |
| 304 | for i in range(len(self.lists)-1): |
| 305 | point = (0, 0) |
| 306 | ok, point = self.lists[i+1].list.LGetSelect(1, point) |
| 307 | self.lists[i].setcontent(self.lists[i+1].content, self.lists[i+1].title) |
| 308 | self.lists[i].list.LSetSelect(ok, point) |
| 309 | self.lists[i].list.LAutoScroll() |
| 310 | self.lists[i].active = self.lists[i+1].active |
| 311 | self.lists[i].drawframe() |
| 312 | if len(self.rightover) > 0: |
| 313 | point, content, title, active = self.rightover[-1] |
| 314 | self.lists[-1].setcontent(content, title) |
| 315 | self.lists[-1].list.LSetSelect(1, point) |
| 316 | self.lists[-1].list.LAutoScroll() |
| 317 | self.lists[-1].active = active |
| 318 | self.lists[-1].drawframe() |
| 319 | del self.rightover[-1] |
| 320 | else: |
| 321 | self.lists[-1].setcontent(None) |
| 322 | self.lists[-1].active = 0 |
| 323 | for list in self.lists: |
| 324 | list.drawframe() |
| 325 | |
| 326 | # scroll everything one 'unit' to the right |
| 327 | def do_leftbutton(self): |
| 328 | if self.leftover == []: |
| 329 | return |
| 330 | self.scroll(1) |
| 331 | if self.lists[-1].content <> None: |
| 332 | point = (0, 0) |
| 333 | ok, point = self.lists[-1].list.LGetSelect(1, point) |
| 334 | self.rightover.append(point, self.lists[-1].content, self.lists[-1].title, self.lists[-1].active ) |
| 335 | for i in range(len(self.lists)-1, 0, -1): |
| 336 | point = (0, 0) |
| 337 | ok, point = self.lists[i-1].list.LGetSelect(1, point) |
| 338 | self.lists[i].setcontent(self.lists[i-1].content, self.lists[i-1].title) |
| 339 | self.lists[i].list.LSetSelect(ok, point) |
| 340 | self.lists[i].list.LAutoScroll() |
| 341 | self.lists[i].active = self.lists[i-1].active |
| 342 | self.lists[i].drawframe() |
| 343 | if len(self.leftover) > 0: |
| 344 | point, content, title, active = self.leftover[-1] |
| 345 | self.lists[0].setcontent(content, title) |
| 346 | self.lists[0].list.LSetSelect(1, point) |
| 347 | self.lists[0].list.LAutoScroll() |
| 348 | self.lists[0].active = active |
| 349 | self.lists[0].drawframe() |
| 350 | del self.leftover[-1] |
| 351 | else: |
| 352 | self.lists[0].setcontent(None) |
| 353 | self.lists[0].active = 0 |
| 354 | |
| 355 | # create some visual feedback when 'scrolling' the lists to the left or to the right |
| 356 | def scroll(self, leftright): # leftright should be 1 or -1 |
| 357 | # first, build a region containing all list rectangles |
| 358 | myregion = Qd.NewRgn() |
| 359 | mylastregion = Qd.NewRgn() |
| 360 | for list in self.lists: |
| 361 | AddRect2Rgn(list.rect, myregion) |
| 362 | AddRect2Rgn(list.rect, mylastregion) |
| 363 | # set the pen, but save it's state first |
| 364 | self.SetPort() |
| 365 | save = Qd.GetPenState() |
| 366 | Qd.PenPat(Qd.qd.gray) |
| 367 | Qd.PenMode(srcXor) |
| 368 | # how far do we have to scroll? |
| 369 | distance = self.lists[1].rect[0] - self.lists[0].rect[0] |
| 370 | step = 30 |
| 371 | lasttime = time.clock() # for delay |
| 372 | # do it |
| 373 | for i in range(0, distance, step): |
| 374 | if i <> 0: |
| 375 | Qd.FrameRgn(mylastregion) # erase last region |
| 376 | Qd.OffsetRgn(mylastregion, step * leftright, 0) |
| 377 | # draw gray region |
| 378 | Qd.FrameRgn(myregion) |
| 379 | Qd.OffsetRgn(myregion, step * leftright, 0) |
| 380 | while time.clock() - lasttime < 0.05: |
| 381 | pass # delay |
| 382 | lasttime = time.clock() |
| 383 | # clean up after your dog |
| 384 | Qd.FrameRgn(mylastregion) |
| 385 | Qd.SetPenState(save) |
| 386 | |
| 387 | def reset(self): |
| 388 | for list in self.lists: |
| 389 | point = (0,0) |
| 390 | ok, point = list.list.LGetSelect(1, point) |
| 391 | if ok: |
| 392 | sel = list.keylist[point[1]] |
| 393 | list.setcontent(list.content, list.title) |
| 394 | if ok: |
| 395 | list.list.LSetSelect(1, (0, list.keylist.index(sel))) |
| 396 | list.list.LAutoScroll() |
| 397 | |
| 398 | def do_itemhit(self, item, event): |
| 399 | if item in self.listitems: |
| 400 | self.do_listhit(event, item) |
| 401 | elif item == MAIN_LEFT: |
| 402 | self.do_leftbutton() |
| 403 | elif item == MAIN_RIGHT: |
| 404 | self.do_rightbutton() |
| 405 | elif item == MAIN_CLOSE: |
| 406 | self.close() |
| 407 | elif item == MAIN_RESET: |
| 408 | self.reset() |
| 409 | |
| 410 | # helper function that returns a short string containing the type of an arbitrary object |
| 411 | # eg: cleantype("wat is dit nu weer?") -> '(string)' |
| 412 | def cleantype(obj): |
| 413 | # type() typically returns something like: <type 'string'> |
| 414 | items = string.split(str(type(obj)), "'") |
| 415 | if len(items) == 3: |
| 416 | return '(' + items[1] + ')' |
| 417 | else: |
| 418 | # just in case, I don't know. |
| 419 | return str(type(obj)) |
| 420 | |
| 421 | # helper for VarBrowser.scroll |
| 422 | def AddRect2Rgn(theRect, theRgn): |
| 423 | rRgn = Qd.NewRgn() |
| 424 | Qd.RectRgn(rRgn, theRect) |
| 425 | Qd.UnionRgn(rRgn, theRgn, theRgn) |
| 426 | |
| 427 | |
| 428 | if __name__ == "__main__": |
| 429 | main() |