controls/FolderTree.py
author Edouard Tisserant <edouard.tisserant@gmail.com>
Tue, 22 Mar 2022 14:50:46 +0100
branchwxPython4
changeset 3442 29dbdb09da2e
parent 3303 0ffb41625592
child 3636 99b20dff00d5
permissions -rw-r--r--
Tests: fix project edit test sikuli IDE test.

Background click based on bitmap matching doesn't work.
Grid dots are not good match candidates.
Rendering probably affected by virtual display's bpp or rasterizer approximations.
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# This file is part of Beremiz, a Integrated Development Environment for
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# programming IEC 61131-3 automates supporting plcopen standard and CanFestival.
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#
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# Copyright (C) 2013: Edouard TISSERANT and Laurent BESSARD
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#
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# See COPYING file for copyrights details.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
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from __future__ import absolute_import
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import os
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import wx
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from six.moves import xrange
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from util.BitmapLibrary import GetBitmap
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DRIVE, FOLDER, FILE = range(3)
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def sort_folder(x, y):
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    if x[1] == y[1]:
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        return cmp(x[0], y[0])
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    elif x[1] != FILE:
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        return -1
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    else:
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        return 1
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def splitpath(path):
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    head, tail = os.path.split(path)
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    if head == "":
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        return [tail]
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    elif tail == "":
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        return splitpath(head)
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    return splitpath(head) + [tail]
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class FolderTree(wx.Panel):
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    def __init__(self, parent, folder, filter=None, editable=True):
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        wx.Panel.__init__(self, parent, style=wx.TAB_TRAVERSAL)
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        main_sizer = wx.BoxSizer(wx.VERTICAL)
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        self.Tree = wx.TreeCtrl(self,
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                                style=(wx.TR_HAS_BUTTONS |
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                                       wx.TR_SINGLE |
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                                       wx.SUNKEN_BORDER |
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                                       wx.TR_HIDE_ROOT |
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                                       wx.TR_LINES_AT_ROOT |
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                                       wx.TR_EDIT_LABELS))
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        if wx.Platform == '__WXMSW__':
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            self.Bind(wx.EVT_TREE_ITEM_ACTIVATED, self.OnTreeItemExpanded, self.Tree)
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            self.Tree.Bind(wx.EVT_LEFT_DOWN, self.OnTreeLeftDown)
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        else:
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            self.Bind(wx.EVT_TREE_ITEM_EXPANDED, self.OnTreeItemExpanded, self.Tree)
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        self.Bind(wx.EVT_TREE_ITEM_COLLAPSED, self.OnTreeItemCollapsed, self.Tree)
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        self.Bind(wx.EVT_TREE_BEGIN_LABEL_EDIT, self.OnTreeBeginLabelEdit, self.Tree)
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        self.Bind(wx.EVT_TREE_END_LABEL_EDIT, self.OnTreeEndLabelEdit, self.Tree)
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        main_sizer.Add(self.Tree, 1, flag=wx.GROW)
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        if filter is not None:
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            self.Filter = wx.ComboBox(self, style=wx.CB_READONLY)
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            self.Bind(wx.EVT_COMBOBOX, self.OnFilterChanged, self.Filter)
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            main_sizer.Add(self.Filter, flag=wx.GROW)
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        else:
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            self.Filter = None
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        self.SetSizer(main_sizer)
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        self.Folder = folder
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        self.Editable = editable
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        self.TreeImageList = wx.ImageList(16, 16)
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        self.TreeImageDict = {}
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        for item_type, bitmap in [(DRIVE, "tree_drive"),
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                                  (FOLDER, "tree_folder"),
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                                  (FILE, "tree_file")]:
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            self.TreeImageDict[item_type] = self.TreeImageList.Add(GetBitmap(bitmap))
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        self.Tree.SetImageList(self.TreeImageList)
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        self.Filters = {}
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        if self.Filter is not None:
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            filter_parts = filter.split("|")
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            for idx in xrange(0, len(filter_parts), 2):
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                if filter_parts[idx + 1] == "*.*":
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                    self.Filters[filter_parts[idx]] = ""
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                else:
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                    self.Filters[filter_parts[idx]] = filter_parts[idx + 1].replace("*", "")
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                self.Filter.Append(filter_parts[idx])
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                if idx == 0:
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                    self.Filter.SetStringSelection(filter_parts[idx])
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            self.CurrentFilter = self.Filters[self.Filter.GetStringSelection()]
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        else:
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            self.CurrentFilter = ""
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    def _GetFolderChildren(self, folderpath, recursive=True):
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        items = []
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        if wx.Platform == '__WXMSW__' and folderpath == "/":
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            for c in xrange(ord('a'), ord('z')):
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                drive = os.path.join("%s:\\" % chr(c))
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                if os.path.exists(drive):
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                    items.append((drive, DRIVE, self._GetFolderChildren(drive, False)))
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   122
        else:
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   123
            try:
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                files = os.listdir(folderpath)
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            except Exception:
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                return []
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            for filename in files:
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                if not filename.startswith("."):
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                    filepath = os.path.join(folderpath, filename)
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                    if os.path.isdir(filepath):
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                        if recursive:
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                            children = len(self._GetFolderChildren(filepath, False))
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                        else:
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                            children = 0
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                        items.append((filename, FOLDER, children))
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                    elif (self.CurrentFilter == "" or
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                          os.path.splitext(filename)[1] == self.CurrentFilter):
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                        items.append((filename, FILE, None))
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        if recursive:
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            items.sort(sort_folder)
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        return items
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    def SetFilter(self, filter):
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        self.CurrentFilter = filter
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    def GetTreeCtrl(self):
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        return self.Tree
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    def RefreshTree(self):
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        root = self.Tree.GetRootItem()
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        if not root.IsOk():
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            root = self.Tree.AddRoot("")
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        self.GenerateTreeBranch(root, self.Folder)
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    def GenerateTreeBranch(self, root, folderpath):
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        item, item_cookie = self.Tree.GetFirstChild(root)
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        for idx, (filename, item_type, children) in enumerate(self._GetFolderChildren(folderpath)):
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            if not item.IsOk():
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                item = self.Tree.AppendItem(root, filename, self.TreeImageDict[item_type])
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                if wx.Platform != '__WXMSW__':
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                    item, item_cookie = self.Tree.GetNextChild(root, item_cookie)
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            elif self.Tree.GetItemText(item) != filename:
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                item = self.Tree.InsertItemBefore(root, idx, filename, self.TreeImageDict[item_type])
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            filepath = os.path.join(folderpath, filename)
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   165
            if item_type != FILE:
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                if self.Tree.IsExpanded(item):
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                    self.GenerateTreeBranch(item, filepath)
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   168
                elif children > 0:
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                    self.Tree.SetItemHasChildren(item)
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            item, item_cookie = self.Tree.GetNextChild(root, item_cookie)
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   171
        to_delete = []
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   172
        while item.IsOk():
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   173
            to_delete.append(item)
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            item, item_cookie = self.Tree.GetNextChild(root, item_cookie)
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        for item in to_delete:
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            self.Tree.Delete(item)
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   177
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   178
    def ExpandItem(self, item):
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        self.GenerateTreeBranch(item, self.GetPath(item))
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        self.Tree.Expand(item)
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    def OnTreeItemActivated(self, event):
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   183
        self.ExpandItem(event.GetItem())
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        event.Skip()
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    def OnTreeLeftDown(self, event):
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   187
        item, flags = self.Tree.HitTest(event.GetPosition())
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   188
        if flags & wx.TREE_HITTEST_ONITEMBUTTON and not self.Tree.IsExpanded(item):
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   189
            self.ExpandItem(item)
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   190
        else:
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   191
            event.Skip()
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   192
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   193
    def OnTreeItemExpanded(self, event):
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   194
        item = event.GetItem()
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   195
        self.GenerateTreeBranch(item, self.GetPath(item))
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   196
        event.Skip()
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   197
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   198
    def OnTreeItemCollapsed(self, event):
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   199
        item = event.GetItem()
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   200
        self.Tree.DeleteChildren(item)
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   201
        self.Tree.SetItemHasChildren(item)
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   202
        event.Skip()
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   203
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   204
    def OnTreeBeginLabelEdit(self, event):
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   205
        item = event.GetItem()
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   206
        if self.Editable and not self.Tree.ItemHasChildren(item):
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   207
            event.Skip()
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   208
        else:
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   209
            event.Veto()
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    def OnTreeEndLabelEdit(self, event):
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        new_name = event.GetLabel()
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        if new_name != "":
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            old_filepath = self.GetPath(event.GetItem())
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            new_filepath = os.path.join(os.path.split(old_filepath)[0], new_name)
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   216
            if new_filepath != old_filepath:
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                if not os.path.exists(new_filepath):
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                    os.rename(old_filepath, new_filepath)
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                    event.Skip()
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   220
                else:
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   221
                    message = wx.MessageDialog(self,
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   222
                                               _("File '%s' already exists!") % new_name,
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   223
                                               _("Error"), wx.OK | wx.ICON_ERROR)
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   224
                    message.ShowModal()
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   225
                    message.Destroy()
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   226
                    event.Veto()
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        else:
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   228
            event.Skip()
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   229
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    def OnFilterChanged(self, event):
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   231
        self.CurrentFilter = self.Filters[self.Filter.GetStringSelection()]
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   232
        self.RefreshTree()
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   233
        event.Skip()
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   234
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   235
    def _SelectItem(self, root, parts):
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   236
        if len(parts) == 0:
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   237
            self.Tree.SelectItem(root)
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   238
        else:
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   239
            item, item_cookie = self.Tree.GetFirstChild(root)
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diff changeset
   240
            while item.IsOk():
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   241
                if self.Tree.GetItemText(item) == parts[0]:
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   242
                    if self.Tree.ItemHasChildren(item) and \
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   243
                       not self.Tree.IsExpanded(item):
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   244
                        self.Tree.Expand(item)
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   245
                        wx.CallAfter(self._SelectItem, item, parts[1:])
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   246
                    else:
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   247
                        self._SelectItem(item, parts[1:])
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   248
                    return
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   249
                item, item_cookie = self.Tree.GetNextChild(root, item_cookie)
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   250
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   251
    def SetPath(self, path):
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        if path.startswith(self.Folder):
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            root = self.Tree.GetRootItem()
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            if root.IsOk():
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                relative_path = path.replace(os.path.join(self.Folder, ""), "")
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                self._SelectItem(root, splitpath(relative_path))
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951
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    def GetPath(self, item=None):
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        if item is None:
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            item = self.Tree.GetSelection()
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        if item.IsOk():
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            filepath = self.Tree.GetItemText(item)
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            parent = self.Tree.GetItemParent(item)
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            while parent.IsOk() and parent != self.Tree.GetRootItem():
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                filepath = os.path.join(self.Tree.GetItemText(parent), filepath)
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                parent = self.Tree.GetItemParent(parent)
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            return os.path.join(self.Folder, filepath)
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        return self.Folder