hi,
i am migrating an app from perl/tk to wxpython
i have a list of the form:
root
root/animals
root/animals/dogs
root/animals/cats
root/animals/cats/small
root/birds
root/birds/parrots
root/fish
etc etc
can anyone point me to a painless way of populating a treectrl with this
list?
regards
kg
the naive approach (the process is split in 2: first turn the list into a tree then add the python tree to the wx.TreeCtrl. Reusability... bla bla... so on and so forth)
import wx
paths = [
'root',
'root/animals',
'root/animals/dogs',
'root/animals/cats',
'root/animals/cats/small',
'root/birds',
'root/birds/parrots',
'root/fish',
]
tree = {}
def paths2tree(tree, paths):
if len(paths) >0:
if not paths[0] in tree.keys():
tree[paths[0]] = {}
paths2tree(tree[paths[0]], paths[1:])
for item in paths:
path = item.split('/')
paths2tree(tree, path)
class MyFrame(wx.Frame):
def __init__(self):
wx.Frame.__init__(self, None, -1, "Test")
self.tree = wx.TreeCtrl(self, -1)
self.root = self.tree.AddRoot("root")
self.AddTree(self.root, tree['root'])
self.Show()
def AddTree(self, treeId, dict):
if len(dict)>0:
for key in dict.keys():
newId = self.tree.AppendItem(treeId, key)
self.AddTree(newId, dict[key])
app = wx.PySimpleApp()
app.SetTopWindow(MyFrame())
app.MainLoop()
On Tue, 25 May 2004 06:23:21 +0530 (IST), kg <lawgon@thenilgiris.com> wrote:
hi,
i am migrating an app from perl/tk to wxpythoni have a list of the form:
root
root/animals
root/animals/dogs
root/animals/cats
root/animals/cats/small
root/birds
root/birds/parrots
root/fishetc etc
can anyone point me to a painless way of populating a treectrl with this
list?regards
kg
--
Peter Damoc
Hacker Wannabe
thanks, works well, but when using dictionaries, the orginal order, which i
want to preserve, gets messed up ... any work around for that?
On Tuesday 25 May 2004 11:40 am, you wrote:
the naive approach (the process is split in 2: first turn the list into a
tree then add the python tree to the wx.TreeCtrl. Reusability... bla
bla... so on and so forth)
--
regards
kg
here's a snippet of wxTreeCtrl with list-based populator
(just a portion of the code, to give you some of my idea).
In this case, I have tuple of data and text value (ie:
'dlgSampleDialogXrc','Normal dialog with XRC') as leaf item.
the data portion, is hidden from view, and used internally
to display assigned icon (assigned from wxImageList -- not
shown), and proper action when double-clicked (ie, for www,
the rest of the string is considered a URL, which when
clicked, open up web browser).
nav = [
['fld','Samples',
[
['wwwhttp://www.Google.com','Link to website'],
['dlgSampleDialogXrc','Normal dialog with XRC'],
['dlgSampleDialog','Normal dialog without XRC'],
['frmSampleFrameXrc','Normal frame with XRC'],
['frmSampleFrame','Normal frame without XRC'],
]
],
['fld','Basic Services',
[
['tbwMp3','Mp3 Client'],
['frmIsoCode','ISO Code Definition'],
['tbwSysSequences','Sys Sequences'],
['frmSysSequences','Sys Sequences'],
['tbwCurrencyAll','Currency (All)'],
['tbwCompanyParam','Application Parameters'],
]
],
]
class MyTreeCtrl(wx.TreeCtrl):
def __init__(self, parent, id, pos=wx.DefaultPosition, size=wx.DefaultSize, style=wx.TR_HAS_BUTTONS | wx.TR_SINGLE):
wx.TreeCtrl.__init__(self, parent, id, pos, size, style)
self.stack = []
def populate(self,navtree):
self._plant_tree(self.stack,navtree)
self.Expand(self.stack[-1])
def _plant_tree(self,parent,tree):
"""internal funtion to recursively parse _tree module into wxtree's item
"""
for element in tree:
# item type depend on first 3 letters
type = element[0][0:3]
if type == 'fld': #folder!
# create parent
parent.append(self.AppendItem(parent[-1], element[1]))
self.SetItemImage(parent[-1], self.icons['folder'], wx.TreeItemIcon_Normal)
self.SetItemImage(parent[-1], self.icons['folder_open'], wx.TreeItemIcon_Expanded)
children = element[2]
self._plant_tree(parent,children)
parent.pop()
else:
mapdict = dict(frm='frame',tbw='table',www='www',dlg='dialog',rpt='report')
icon = self.icons[mapdict.get(type,'generic')]
data = wx.TreeItemData(element[0]); #set filename as data for this tree item
child = self.AppendItem(parent[-1], element[1], icon, -1, data)
--
Best regards,
dody mailto:dody.wijaya2@asp.co.id
you might contract the 2 phase process into one phase (instead of creating the dict you directly add the elements to the treectrl)
ofcourse if all you need is a sorted tree... you could replace the AddTree method from my previous post with:
def AddTree(self, treeId, dict):
if len(dict)>0:
skeys = dict.keys()
skeys.sort()
for key in skeys:
newId = self.tree.AppendItem(treeId, key)
self.AddTree(newId, dict[key])
On Tue, 25 May 2004 12:41:37 +0530, kg <lawgon@thenilgiris.com> wrote:
On Tuesday 25 May 2004 11:40 am, you wrote:
the naive approach (the process is split in 2: first turn the list into a
tree then add the python tree to the wx.TreeCtrl. Reusability... bla
bla... so on and so forth)thanks, works well, but when using dictionaries, the orginal order, which i
want to preserve, gets messed up ... any work around for that?
--
Peter Damoc
Hacker Wannabe