| 1 | # |
| 2 | # FILE: TreeBrowser.py |
| 3 | # |
| 4 | # DESCRIPTION: |
| 5 | # This file provides a generic hierarchical tree browser widget. |
| 6 | # |
| 7 | # AUTHOR: Steve Kinneberg <skinneberg@mvista.com>, |
| 8 | # MontaVista Software, Inc. <source@mvista.com> |
| 9 | # |
| 10 | # Copyright 2001 MontaVista Software Inc. |
| 11 | # |
| 12 | # This program is free software; you can redistribute it and/or modify it |
| 13 | # under the terms of the GNU General Public License as published by the |
| 14 | # Free Software Foundation; either version 2 of the License, or (at your |
| 15 | # option) any later version. |
| 16 | # |
| 17 | # THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 18 | # WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 19 | # MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN |
| 20 | # NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 21 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 22 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| 23 | # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON |
| 24 | # ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 26 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | # |
| 28 | # You should have received a copy of the GNU General Public License along |
| 29 | # with this program; if not, write to the Free Software Foundation, Inc., |
| 30 | # 675 Mass Ave, Cambridge, MA 02139, USA. |
| 31 | # |
| 32 | |
| 33 | |
| 34 | import types |
| 35 | import Tkinter |
| 36 | import Pmw |
| 37 | |
| 38 | |
| 39 | class _Branching: |
| 40 | def __init__(self): |
| 41 | # List of branch names |
| 42 | self._nodeNames = [] |
| 43 | |
| 44 | # Map from branch name to branch info |
| 45 | # branch Either _LeafNode or _BranchNode widget of the branch |
| 46 | # nodetype Either 'TreeNode' or 'LeafNode' |
| 47 | self._nodeAttrs = {} |
| 48 | |
| 49 | def addbranch(self, branchName = None, **kw): |
| 50 | kw['indent'] = self['indent'] |
| 51 | return apply(self._insertnode, |
| 52 | ('tree', branchName, len(self._nodeNames), |
| 53 | self._treeRoot), |
| 54 | kw) |
| 55 | |
| 56 | def addleaf(self, leafName = None, **kw): |
| 57 | return apply(self._insertnode, |
| 58 | ('leaf', leafName, len(self._nodeNames), |
| 59 | self._treeRoot), |
| 60 | kw) |
| 61 | |
| 62 | def insertbranch(self, branchName = None, before = 0, **kw): |
| 63 | kw['indent'] = self['indent'] |
| 64 | return apply(self._insertnode, |
| 65 | ('tree', branchName, before, self._treeRoot), |
| 66 | kw) |
| 67 | |
| 68 | def insertleaf(self, leafName = None, before = 0, **kw): |
| 69 | return apply(self._insertnode, |
| 70 | ('leaf', leafName, before, self._treeRoot), |
| 71 | kw) |
| 72 | |
| 73 | def _insertnode(self, type, nodeName, before, treeRoot, **kw): |
| 74 | if 'selectbackground' not in kw.keys(): |
| 75 | kw['selectbackground'] = self['selectbackground'] |
| 76 | |
| 77 | if 'selectforeground' not in kw.keys(): |
| 78 | kw['selectforeground'] = self['selectforeground'] |
| 79 | |
| 80 | if 'background' not in kw.keys(): |
| 81 | kw['background'] = self['background'] |
| 82 | |
| 83 | if 'foreground' not in kw.keys(): |
| 84 | kw['foreground'] = self['foreground'] |
| 85 | |
| 86 | if nodeName == None: |
| 87 | nodeName = self._nodeName + ".%d" % (len(self._nodeNames) + 1) |
| 88 | |
| 89 | if self._nodeAttrs.has_key(nodeName): |
| 90 | msg = 'Node "%s" already exists.' % nodeName |
| 91 | raise ValueError, msg |
| 92 | |
| 93 | # Do this early to catch bad <before> spec before creating any items. |
| 94 | beforeIndex = self.index(before, 1) |
| 95 | attributes = {} |
| 96 | |
| 97 | last = (beforeIndex == len(self._nodeNames)) |
| 98 | if last and len(self._nodeNames) > 0: |
| 99 | # set the previous node to not last |
| 100 | self._nodeAttrs[self._nodeNames[-1]]['branch']._setlast(0) |
| 101 | |
| 102 | if(type == 'tree'): |
| 103 | node = apply(self.createcomponent, ('branch%d'%len(self._nodeNames), |
| 104 | (), None, |
| 105 | _BranchNode, |
| 106 | self._branchFrame, |
| 107 | nodeName, |
| 108 | treeRoot, |
| 109 | self, |
| 110 | last, |
| 111 | ), kw) |
| 112 | attributes['nodetype'] = 'TreeNode' |
| 113 | else: |
| 114 | node = apply(self.createcomponent, ('leaf%d'%len(self._nodeNames), |
| 115 | (), None, |
| 116 | _LeafNode, |
| 117 | self._branchFrame, |
| 118 | nodeName, |
| 119 | treeRoot, |
| 120 | self, |
| 121 | last, |
| 122 | ), kw) |
| 123 | attributes['nodetype'] = 'LeafNode' |
| 124 | |
| 125 | if len(self._nodeNames) == beforeIndex: |
| 126 | node.pack(anchor='w') |
| 127 | else: |
| 128 | bname = self._nodeNames[beforeIndex] |
| 129 | battrs = self._nodeAttrs[bname] |
| 130 | node.pack(anchor='w', before=battrs['branch']) |
| 131 | |
| 132 | attributes['branch'] = node |
| 133 | |
| 134 | self._nodeAttrs[nodeName] = attributes |
| 135 | self._nodeNames.insert(beforeIndex, nodeName) |
| 136 | self._sizechange() |
| 137 | return node |
| 138 | |
| 139 | def delete(self, *nodes): |
| 140 | curSel = self._treeRoot.curselection()[0] |
| 141 | for node in nodes: |
| 142 | index = self.index(node) |
| 143 | name = self._nodeNames.pop(index) |
| 144 | dnode = self._nodeAttrs[name]['branch'] |
| 145 | del self._nodeAttrs[name] |
| 146 | if dnode == curSel: |
| 147 | self._treeRoot._unhightlightnode(dnode) |
| 148 | dnode.destroy() |
| 149 | self._sizechange() |
| 150 | |
| 151 | def destroy(self): |
| 152 | for node in len(self._nodeNames): |
| 153 | self.delete(node) |
| 154 | Pmw.MegaWidget.destroy(self) |
| 155 | |
| 156 | def index(self, index, forInsert = 0): |
| 157 | if isinstance(index, _LeafNode): |
| 158 | index = index._nodeName |
| 159 | listLength = len(self._nodeNames) |
| 160 | if type(index) == types.IntType: |
| 161 | if forInsert and index <= listLength: |
| 162 | return index |
| 163 | elif not forInsert and index < listLength: |
| 164 | return index |
| 165 | else: |
| 166 | raise ValueError, 'index "%s" is out of range' % index |
| 167 | elif type(index) == types.StringType: |
| 168 | if index in self._nodeNames: |
| 169 | return self._nodeNames.index(index) |
| 170 | raise ValueError, 'bad branch or leaf name: %s' % index |
| 171 | elif index is Pmw.END: |
| 172 | if forInsert: |
| 173 | return listLength |
| 174 | elif listLength > 0: |
| 175 | return listLength - 1 |
| 176 | else: |
| 177 | raise ValueError, 'TreeNode has no branches' |
| 178 | #elif index is Pmw.SELECT: |
| 179 | # if listLength == 0: |
| 180 | # raise ValueError, 'TreeNode has no branches' |
| 181 | # return self._pageNames.index(self.getcurselection()) |
| 182 | else: |
| 183 | validValues = 'a name, a number, Pmw.END, Pmw.SELECT, or a reference to a TreeBrowser Leaf or Branch' |
| 184 | raise ValueError, \ |
| 185 | 'bad index "%s": must be %s' % (index, validValues) |
| 186 | |
| 187 | def getnodenames(self): |
| 188 | return self._nodeNames |
| 189 | |
| 190 | def getnode(self, node): |
| 191 | nodeName = self._nodeNames[self.index(node)] |
| 192 | return self._nodeAttrs[nodeName]['branch'] |
| 193 | |
| 194 | |
| 195 | class _LeafNode(Pmw.MegaWidget): |
| 196 | |
| 197 | def __init__(self, parent, nodeName, treeRoot, parentnode, last = 1, **kw): |
| 198 | colors = Pmw.Color.getdefaultpalette(parent) |
| 199 | |
| 200 | self._nodeName = nodeName |
| 201 | self._treeRoot = treeRoot |
| 202 | self._parentNode = parentnode |
| 203 | |
| 204 | self._last = last |
| 205 | # Define the megawidget options. |
| 206 | INITOPT = Pmw.INITOPT |
| 207 | optiondefs = ( |
| 208 | ('selectbackground', colors['selectBackground'], INITOPT), |
| 209 | ('selectforeground', colors['selectForeground'], INITOPT), |
| 210 | ('background', colors['background'], INITOPT), |
| 211 | ('foreground', colors['foreground'], INITOPT), |
| 212 | ('selectcommand', None, None), |
| 213 | ('deselectcommand', None, None), |
| 214 | ('labelpos', 'e', INITOPT), |
| 215 | ('labelmargin', 0, INITOPT), |
| 216 | ('label', None, None), |
| 217 | ) |
| 218 | self.defineoptions(kw, optiondefs) |
| 219 | |
| 220 | # Initialise the base class (after defining the options). |
| 221 | Pmw.MegaWidget.__init__(self, parent) |
| 222 | |
| 223 | # Create the components |
| 224 | interior = self._hull |
| 225 | |
| 226 | |
| 227 | labelpos = self['labelpos'] |
| 228 | |
| 229 | if self['label'] == None: |
| 230 | self._labelWidget = self.createcomponent('labelwidget', |
| 231 | (), None, |
| 232 | Pmw.LabeledWidget, |
| 233 | (interior,), |
| 234 | #background = self['background'], |
| 235 | #foreground = self['foreground'], |
| 236 | ) |
| 237 | else: |
| 238 | self._labelWidget = self.createcomponent('labelwidget', |
| 239 | (), None, |
| 240 | Pmw.LabeledWidget, |
| 241 | (interior,), |
| 242 | label_background = self['background'], |
| 243 | label_foreground = self['foreground'], |
| 244 | labelpos = labelpos, |
| 245 | labelmargin = self['labelmargin'], |
| 246 | label_text = self['label'], |
| 247 | ) |
| 248 | self._labelWidget.component('label').bind('<ButtonRelease-1>', |
| 249 | self._selectevent) |
| 250 | |
| 251 | self._labelWidget.grid(column = 1, row = 0, sticky = 'w') |
| 252 | |
| 253 | self._labelWidget.update() |
| 254 | |
| 255 | self._labelheight = self._labelWidget.winfo_height() |
| 256 | |
| 257 | self._lineCanvas = self.createcomponent('linecanvas', |
| 258 | (), None, |
| 259 | Tkinter.Canvas, |
| 260 | (interior,), |
| 261 | width = self._labelheight, |
| 262 | height = self._labelheight, |
| 263 | ) |
| 264 | self._lineCanvas.grid( column = 0, row = 0, sticky = 'news') |
| 265 | self._lineCanvas.update() |
| 266 | |
| 267 | cw = int(self._lineCanvas['width']) |
| 268 | ch = int(self._lineCanvas['height']) |
| 269 | |
| 270 | self._lineCanvas.create_line(cw/2, ch/2, cw, ch/2, tag='hline') |
| 271 | if last: |
| 272 | self._lineCanvas.create_line(cw/2, 0, cw/2, ch/2, tag='vline') |
| 273 | else: |
| 274 | self._lineCanvas.create_line(cw/2, 0, cw/2, ch, tag='vline') |
| 275 | |
| 276 | # Check keywords and initialise options. |
| 277 | self.initialiseoptions() |
| 278 | |
| 279 | |
| 280 | def interior(self): |
| 281 | return self._labelWidget.interior() |
| 282 | |
| 283 | def select(self): |
| 284 | self._highlight() |
| 285 | |
| 286 | def getname(self): |
| 287 | return self._nodeName |
| 288 | |
| 289 | def getlabel(self): |
| 290 | return self['label'] |
| 291 | |
| 292 | def _selectevent(self, event): |
| 293 | self._highlight() |
| 294 | |
| 295 | def _highlight(self): |
| 296 | self._treeRoot._highlightnode(self) |
| 297 | #self._subHull.configure(background = self._selectbg, relief = 'raised') |
| 298 | if self['label'] != None: |
| 299 | self._labelWidget.configure(label_background = self['selectbackground']) |
| 300 | self._labelWidget.configure(label_foreground = self['selectforeground']) |
| 301 | #self._viewButton.configure(background = self._selectbg) |
| 302 | cmd = self['selectcommand'] |
| 303 | if callable(cmd): |
| 304 | cmd(self) |
| 305 | |
| 306 | def _unhighlight(self): |
| 307 | #self._subHull.configure(background = self._bg, relief = 'flat') |
| 308 | if self['label'] != None: |
| 309 | self._labelWidget.configure(label_background = self['background']) |
| 310 | self._labelWidget.configure(label_foreground = self['foreground']) |
| 311 | #self._viewButton.configure(background = self._bg) |
| 312 | cmd = self['deselectcommand'] |
| 313 | if callable(cmd): |
| 314 | cmd(self) |
| 315 | |
| 316 | def _setlast(self, last): |
| 317 | self._last = last |
| 318 | |
| 319 | cw = int(self._lineCanvas['width']) |
| 320 | ch = int(self._lineCanvas['height']) |
| 321 | |
| 322 | if last: |
| 323 | self._lineCanvas.create_line(cw/2, 0, cw/2, ch/2, tag='vline') |
| 324 | else: |
| 325 | self._lineCanvas.create_line(cw/2, 0, cw/2, ch, tag='vline') |
| 326 | |
| 327 | |
| 328 | class _BranchNode(_LeafNode, _Branching): #Pmw.MegaWidget): |
| 329 | |
| 330 | def __init__(self, parent, nodeName, treeRoot, parentnode, last = 1, **kw): |
| 331 | # Define the megawidget options. |
| 332 | INITOPT = Pmw.INITOPT |
| 333 | optiondefs = ( |
| 334 | ('view', 'collapsed', None), |
| 335 | ('expandcommand', None, None), |
| 336 | ('collapsecommand', None, None), |
| 337 | ('indent', 0, INITOPT) |
| 338 | ) |
| 339 | self.defineoptions(kw, optiondefs) |
| 340 | |
| 341 | # Initialise the base class (after defining the options). |
| 342 | apply(_LeafNode.__init__, |
| 343 | (self, parent, nodeName, treeRoot, parentnode, last), |
| 344 | kw) |
| 345 | _Branching.__init__(self) |
| 346 | |
| 347 | # Create the components |
| 348 | interior = self._hull |
| 349 | |
| 350 | # Create the expand/collapse button |
| 351 | self._viewButton = self.createcomponent('viewbutton', (), None, |
| 352 | Tkinter.Canvas, |
| 353 | (interior,), |
| 354 | background = self['background'], |
| 355 | width = self._labelheight - 4, |
| 356 | height = self._labelheight - 4, |
| 357 | borderwidth = 2, |
| 358 | relief = 'raised') |
| 359 | |
| 360 | self._viewButton.grid(column = 0, row = 0, sticky='se') |
| 361 | self._viewButton.bind('<ButtonPress-1>', self._showbuttonpress) |
| 362 | self._viewButton.bind('<ButtonRelease-1>', self._toggleview) |
| 363 | |
| 364 | # The label widget is already created by the base class, however |
| 365 | # we do need to make some slight modifications. |
| 366 | if self['label'] != None: |
| 367 | self._labelWidget.component('label').bind('<Double-1>', |
| 368 | self._toggleview) |
| 369 | self._labelWidget.grid(column=1, row=0, columnspan = 3, sticky='sw') |
| 370 | |
| 371 | # A line canvas is already created for us, we just need to make |
| 372 | # some slight modifications |
| 373 | self._lineCanvas.delete('hline') |
| 374 | self._lineCanvas.grid_forget() |
| 375 | |
| 376 | |
| 377 | # Set the minsize of column 1 to control additional branch frame indentation |
| 378 | self.grid_columnconfigure(1, minsize = self['indent']) |
| 379 | |
| 380 | # Create the branch frame that will contain all the branch/leaf nodes |
| 381 | self._branchFrame = self.createcomponent('frame', (), None, |
| 382 | Tkinter.Frame, (interior,), |
| 383 | #borderwidth=2, |
| 384 | #relief='ridge', |
| 385 | ) |
| 386 | self.grid_columnconfigure(2,minsize=0, weight=1) |
| 387 | #self.grid_rowconfigure(0,minsize=0) |
| 388 | |
| 389 | if(self['view'] == 'expanded'): |
| 390 | Pmw.drawarrow(self._viewButton, |
| 391 | self['foreground'], |
| 392 | 'down', 'arrow') |
| 393 | self._branchFrame.grid(column = 2, row = 1, sticky='nw') |
| 394 | if not self._last: |
| 395 | self._branchFrame.update() |
| 396 | bh = self._branchFrame.winfo_height() |
| 397 | self._lineCanvas.configure(height = bh) |
| 398 | self._lineCanvas.grid(column = 0, row = 1, sticky='news') |
| 399 | cw = int(self._lineCanvas['width']) |
| 400 | ch = int(self._lineCanvas['height']) |
| 401 | #self._lineCanvas.create_line(cw/2, 1, cw/2, ch, tag = 'vline') |
| 402 | self._lineCanvas.coords('vline', cw/2, 1, cw/2, ch) |
| 403 | else: |
| 404 | Pmw.drawarrow(self._viewButton, |
| 405 | self['foreground'], |
| 406 | 'right', 'arrow') |
| 407 | self._viewButton.configure(relief = 'raised') |
| 408 | |
| 409 | |
| 410 | # Check keywords and initialise options. |
| 411 | self.initialiseoptions() |
| 412 | |
| 413 | |
| 414 | |
| 415 | def _showbuttonpress(self, event): |
| 416 | self._viewButton.configure(relief = 'sunken') |
| 417 | |
| 418 | def _toggleview(self, event): |
| 419 | self._viewButton.configure(relief = 'sunken') |
| 420 | self.select() |
| 421 | if(self['view'] == 'expanded'): |
| 422 | self.collapsetree() |
| 423 | else: |
| 424 | self.expandtree() |
| 425 | self._viewButton.configure(relief = 'raised') |
| 426 | |
| 427 | def expandtree(self): |
| 428 | if(self['view'] == 'collapsed'): |
| 429 | cmd = self['expandcommand'] |
| 430 | if cmd is not None: |
| 431 | cmd(self) |
| 432 | self['view'] = 'expanded' |
| 433 | Pmw.drawarrow(self._viewButton, |
| 434 | self['foreground'], |
| 435 | 'down', 'arrow') |
| 436 | self._branchFrame.grid(column = 2, row = 1, sticky='nw') |
| 437 | |
| 438 | if not self._last: |
| 439 | self._branchFrame.update() |
| 440 | bh = self._branchFrame.winfo_height() |
| 441 | self._lineCanvas.configure(height = bh) |
| 442 | self._lineCanvas.grid(column = 0, row = 1, sticky='news') |
| 443 | cw = int(self._lineCanvas['width']) |
| 444 | ch = int(self._lineCanvas['height']) |
| 445 | #self._lineCanvas.create_line( cw/2, 1, cw/2, ch, tag = 'vline') |
| 446 | self._lineCanvas.coords('vline', cw/2, 1, cw/2, ch) |
| 447 | self._parentNode._sizechange() |
| 448 | |
| 449 | def collapsetree(self): |
| 450 | if(self['view'] == 'expanded'): |
| 451 | cmd = self['collapsecommand'] |
| 452 | if cmd is not None: |
| 453 | cmd(self) |
| 454 | self['view'] = 'collapsed' |
| 455 | Pmw.drawarrow(self._viewButton, |
| 456 | self['foreground'], |
| 457 | 'right', 'arrow') |
| 458 | self._branchFrame.grid_forget() |
| 459 | if not self._last: |
| 460 | #self._lineCanvas.delete('vline') |
| 461 | self._lineCanvas.grid_forget() |
| 462 | self._parentNode._sizechange() |
| 463 | |
| 464 | def _setlast(self, last): |
| 465 | self._last = last |
| 466 | if self['view'] == 'expanded': |
| 467 | self._branchFrame.update() |
| 468 | bh = self._branchFrame.winfo_height() |
| 469 | self._lineCanvas.configure(height = bh) |
| 470 | cw = int(self._lineCanvas['width']) |
| 471 | ch = int(self._lineCanvas['height']) |
| 472 | self._lineCanvas.delete('vline') |
| 473 | if not last: |
| 474 | self._lineCanvas.create_line(cw/2, 1, cw/2, ch, tag='vline') |
| 475 | |
| 476 | |
| 477 | def _sizechange(self): |
| 478 | if not self._last and self['view'] == 'expanded': |
| 479 | self._branchFrame.update() |
| 480 | bh = self._branchFrame.winfo_height() |
| 481 | self._lineCanvas.configure(height = bh) |
| 482 | if self._lineCanvas.coords('vline')[3] < bh: |
| 483 | cw = int(self._lineCanvas['width']) |
| 484 | ch = int(self._lineCanvas['height']) |
| 485 | #self._lineCanvas.delete('vline') |
| 486 | #self._lineCanvas.create_line(cw/2, 1, cw/2, ch, tag='vline') |
| 487 | self._lineCanvas.coords('vline', cw/2, 1, cw/2, ch) |
| 488 | self._parentNode._sizechange() |
| 489 | |
| 490 | class TreeBrowser(Pmw.MegaWidget, _Branching): |
| 491 | |
| 492 | def __init__(self, parent = None, nodeName = '0', **kw): |
| 493 | colors = Pmw.Color.getdefaultpalette(parent) |
| 494 | |
| 495 | # Define the megawidget options. |
| 496 | INITOPT = Pmw.INITOPT |
| 497 | optiondefs = ( |
| 498 | ('indent', 0, INITOPT), |
| 499 | ('selectbackground', colors['selectBackground'], INITOPT), |
| 500 | ('selectforeground', colors['selectForeground'], INITOPT), |
| 501 | ('background', colors['background'], INITOPT), |
| 502 | ('foreground', colors['foreground'], INITOPT), |
| 503 | #('selectrelief', 'raised', INITOPT), |
| 504 | ) |
| 505 | |
| 506 | self.defineoptions(kw, optiondefs) |
| 507 | |
| 508 | # Initialise the base class (after defining the options). |
| 509 | Pmw.MegaWidget.__init__(self, parent) |
| 510 | _Branching.__init__(self) |
| 511 | |
| 512 | |
| 513 | # Create the components |
| 514 | interior = self._hull |
| 515 | |
| 516 | browserFrame = self.createcomponent('frame', (), None, |
| 517 | Pmw.ScrolledFrame, |
| 518 | (interior,), |
| 519 | ) |
| 520 | |
| 521 | browserFrame.pack(expand = 1, fill='both') |
| 522 | |
| 523 | self._branchFrame = browserFrame.interior() |
| 524 | |
| 525 | self._highlightedNode = None |
| 526 | self._treeRoot = self |
| 527 | self._nodeName = nodeName |
| 528 | # Check keywords and initialise options. |
| 529 | self.initialiseoptions() |
| 530 | |
| 531 | def _highlightnode(self, newNode): |
| 532 | if self._highlightedNode != newNode: |
| 533 | if self._highlightedNode != None: |
| 534 | self._highlightedNode._unhighlight() |
| 535 | self._highlightedNode = newNode |
| 536 | |
| 537 | def _unhighlightnode(self): |
| 538 | if self._highlightedNode != None: |
| 539 | self._highlightedNode._unhighlight() |
| 540 | self._highlightedNode = None |
| 541 | |
| 542 | def curselection(self): |
| 543 | retVal = None |
| 544 | if self._highlightedNode != None: |
| 545 | retVal = (self._highlightedNode, |
| 546 | self._highlightedNode._nodeName, |
| 547 | self._highlightedNode['label']) |
| 548 | return retVal |
| 549 | |
| 550 | def getname(self): |
| 551 | return self._nodeName |
| 552 | |
| 553 | # The top-level TreeBrowser widget only shows nodes in an expanded view |
| 554 | # but still provides collapsetree() and expandtree() methods so that users |
| 555 | # don't have to special case the top-level node |
| 556 | |
| 557 | def collapsetree(self): |
| 558 | return |
| 559 | |
| 560 | def expandtree(self): |
| 561 | return |
| 562 | |
| 563 | def _sizechange(self): |
| 564 | return |
| 565 | |
| 566 | if __name__ == '__main__': |
| 567 | |
| 568 | rootWin = Tkinter.Tk() |
| 569 | |
| 570 | Pmw.initialise() |
| 571 | |
| 572 | rootWin.title('TreeBrowser Demo') |
| 573 | |
| 574 | # Create the hierarchical tree browser widget |
| 575 | treeBrowser = TreeBrowser(rootWin, |
| 576 | #selectbackground = "darkgreen", |
| 577 | #selectforeground = 'lightgreen', |
| 578 | #background = 'green', |
| 579 | #indent = 10, |
| 580 | ) |
| 581 | |
| 582 | |
| 583 | def printselected(node): |
| 584 | selection = treeBrowser.curselection() |
| 585 | if selection != None: |
| 586 | print "Selected node name:", selection[1], " label:", selection[2] |
| 587 | |
| 588 | |
| 589 | def printdeselected(node): |
| 590 | selection = treeBrowser.curselection() |
| 591 | if selection != None: |
| 592 | print "Deselected node name:", selection[1], " label:", selection[2] |
| 593 | |
| 594 | def printexpanded(node): |
| 595 | print "Expanded node name:", node.getname(), " label:", node.getlabel() |
| 596 | |
| 597 | def printcollapsed(node): |
| 598 | print "Collapsed node name:", node.getname(), " label:", node.getlabel() |
| 599 | |
| 600 | |
| 601 | |
| 602 | for i in range(3): |
| 603 | # Add a tree node to the top level |
| 604 | treeNodeLevel1 = treeBrowser.addbranch(label = 'TreeNode %d'%i, |
| 605 | selectcommand = printselected, |
| 606 | deselectcommand = printdeselected, |
| 607 | expandcommand = printexpanded, |
| 608 | collapsecommand = printcollapsed, |
| 609 | ) |
| 610 | for j in range(3): |
| 611 | # Add a tree node to the second level |
| 612 | treeNodeLevel2 = treeNodeLevel1.addbranch(label = 'TreeNode %d.%d'%(i,j), |
| 613 | #selectforeground = 'yellow', |
| 614 | selectcommand = printselected, |
| 615 | deselectcommand = printdeselected, |
| 616 | expandcommand = printexpanded, |
| 617 | collapsecommand = printcollapsed, |
| 618 | ) |
| 619 | if i == 0 and j == 1: |
| 620 | dynamicTreeRootNode = treeNodeLevel1 |
| 621 | dynamicTreePosNode = treeNodeLevel2 |
| 622 | |
| 623 | for item in range((i+1)*(j+1)): |
| 624 | # Add a leaf node to the third level |
| 625 | leaf = treeNodeLevel2.addleaf(label = "Item %c"%(item+65), |
| 626 | #selectbackground = 'blue', |
| 627 | selectcommand = printselected, |
| 628 | deselectcommand = printdeselected) |
| 629 | for item in range(i+1): |
| 630 | # Add a leaf node to the top level |
| 631 | leaf = treeNodeLevel1.addleaf(label = "Item %c"%(item+65), |
| 632 | selectcommand = printselected, |
| 633 | deselectcommand = printdeselected) |
| 634 | |
| 635 | |
| 636 | treeNodeLevel1 = treeBrowser.addbranch(label = 'Check Button Label', |
| 637 | selectcommand = printselected, |
| 638 | deselectcommand = printdeselected, |
| 639 | expandcommand = printexpanded, |
| 640 | collapsecommand = printcollapsed, |
| 641 | ) |
| 642 | checkButton = Tkinter.Checkbutton(treeNodeLevel1.interior(), |
| 643 | text = 'Da Check Button', |
| 644 | relief = 'ridge', |
| 645 | command = treeNodeLevel1.select) |
| 646 | checkButton.pack() |
| 647 | |
| 648 | treeNodeLevel1.addleaf(label = 'Labeled Leaf', |
| 649 | selectcommand = printselected, |
| 650 | deselectcommand = printdeselected) |
| 651 | leaf = treeNodeLevel1.addleaf(label = 'Labeled Leaf w/ Checkbutton', |
| 652 | selectcommand = printselected, |
| 653 | deselectcommand = printdeselected) |
| 654 | checkButton = Tkinter.Checkbutton(leaf.interior(), |
| 655 | text = 'Da Check Button', |
| 656 | relief = 'ridge', |
| 657 | command = leaf.select) |
| 658 | checkButton.pack() |
| 659 | |
| 660 | |
| 661 | treeNodeLevel1 = treeBrowser.addbranch(selectcommand = printselected, |
| 662 | deselectcommand = printdeselected, |
| 663 | expandcommand = printexpanded, |
| 664 | collapsecommand = printcollapsed, |
| 665 | ) |
| 666 | checkButton = Tkinter.Checkbutton(treeNodeLevel1.interior(), |
| 667 | text = 'Check Button with no label', |
| 668 | relief = 'ridge', |
| 669 | command = treeNodeLevel1.select) |
| 670 | checkButton.pack() |
| 671 | |
| 672 | treeNodeLevel1 = treeBrowser.addbranch(label = 'Label', |
| 673 | selectcommand = printselected, |
| 674 | deselectcommand = printdeselected, |
| 675 | expandcommand = printexpanded, |
| 676 | collapsecommand = printcollapsed, |
| 677 | ) |
| 678 | |
| 679 | # setup dynamic tree node insertion and removal |
| 680 | class dynTree: |
| 681 | def __init__(self): |
| 682 | self.dyn = Tkinter.IntVar() |
| 683 | self.dtree = None |
| 684 | |
| 685 | self.dLeaf = treeBrowser.addleaf(selectcommand = self.dynSelected, |
| 686 | deselectcommand = self.dynDeselected) |
| 687 | |
| 688 | self.dCheckButton = Tkinter.Checkbutton(self.dLeaf.interior(), |
| 689 | text = 'Enable Dynamic Tree', |
| 690 | variable = self.dyn, |
| 691 | command = self.ChkBtnHandler) |
| 692 | self.dCheckButton.pack() |
| 693 | |
| 694 | |
| 695 | def dynSelected(self, node): |
| 696 | self.dCheckButton.configure(background = self.dLeaf.configure('selectbackground')[4]) |
| 697 | printselected(node) |
| 698 | |
| 699 | def dynDeselected(self, node): |
| 700 | self.dCheckButton.configure(background = self.dLeaf.configure('background')[4]) |
| 701 | printdeselected(node) |
| 702 | |
| 703 | def ChkBtnHandler(self): |
| 704 | self.dLeaf.select() |
| 705 | if self.dyn.get() == 1: |
| 706 | self.dtree = dynamicTreeRootNode.insertbranch(label = 'Dynamic Tree Node', |
| 707 | selectcommand = printselected, |
| 708 | deselectcommand = printdeselected, |
| 709 | expandcommand = printexpanded, |
| 710 | collapsecommand = printcollapsed, |
| 711 | before = dynamicTreePosNode) |
| 712 | self.dtree.addleaf(label = 'Dynamic Leaf 1', |
| 713 | selectcommand = printselected, |
| 714 | deselectcommand = printdeselected) |
| 715 | self.dtree.addleaf(label = 'Dynamic Leaf 2', |
| 716 | selectcommand = printselected, |
| 717 | deselectcommand = printdeselected) |
| 718 | else: |
| 719 | if self.dtree != None: |
| 720 | dynamicTreeRootNode.delete(self.dtree) |
| 721 | self.dtree = None |
| 722 | |
| 723 | |
| 724 | foo = dynTree() |
| 725 | |
| 726 | |
| 727 | treeBrowser.pack(expand = 1, fill='both') |
| 728 | |
| 729 | exitButton = Tkinter.Button(rootWin, text="Quit", command=rootWin.quit) |
| 730 | exitButton.pack() |
| 731 | |
| 732 | rootWin.mainloop() |