#!/usr/bin/env python
# -*- coding: utf-8 -*-
#This file is part of PLCOpenEditor, a library implementing an IEC 61131-3 editor
#based on the plcopen standard.
#
#Copyright (C) 2013: Edouard TISSERANT and Laurent BESSARD
#
#See COPYING file for copyrights details.
#
#This library is free software; you can redistribute it and/or
#modify it under the terms of the GNU General Public
#License as published by the Free Software Foundation; either
#version 2.1 of the License, or (at your option) any later version.
#
#This library is distributed in the hope that it will be useful,
#but WITHOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
#General Public License for more details.
#
#You should have received a copy of the GNU General Public
#License along with this library; if not, write to the Free Software
#Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
import os
import wx
from util.BitmapLibrary import GetBitmap
DRIVE, FOLDER, FILE = range(3)
def sort_folder(x, y):
if x[1] == y[1]:
return cmp(x[0], y[0])
elif x[1] != FILE:
return -1
else:
return 1
def splitpath(path):
head, tail = os.path.split(path)
if head == "":
return [tail]
elif tail == "":
return splitpath(head)
return splitpath(head) + [tail]
class FolderTree(wx.Panel):
def __init__(self, parent, folder, filter=None, editable=True):
wx.Panel.__init__(self, parent, style=wx.TAB_TRAVERSAL)
main_sizer = wx.BoxSizer(wx.VERTICAL)
self.Tree = wx.TreeCtrl(self,
style=wx.TR_HAS_BUTTONS|
wx.TR_SINGLE|
wx.SUNKEN_BORDER|
wx.TR_HIDE_ROOT|
wx.TR_LINES_AT_ROOT|
wx.TR_EDIT_LABELS)
if wx.Platform == '__WXMSW__':
self.Bind(wx.EVT_TREE_ITEM_ACTIVATED, self.OnTreeItemExpanded, self.Tree)
self.Tree.Bind(wx.EVT_LEFT_DOWN, self.OnTreeLeftDown)
else:
self.Bind(wx.EVT_TREE_ITEM_EXPANDED, self.OnTreeItemExpanded, self.Tree)
self.Bind(wx.EVT_TREE_ITEM_COLLAPSED, self.OnTreeItemCollapsed, self.Tree)
self.Bind(wx.EVT_TREE_BEGIN_LABEL_EDIT, self.OnTreeBeginLabelEdit, self.Tree)
self.Bind(wx.EVT_TREE_END_LABEL_EDIT, self.OnTreeEndLabelEdit, self.Tree)
main_sizer.AddWindow(self.Tree, 1, flag=wx.GROW)
if filter is not None:
self.Filter = wx.ComboBox(self, style=wx.CB_READONLY)
self.Bind(wx.EVT_COMBOBOX, self.OnFilterChanged, self.Filter)
main_sizer.AddWindow(self.Filter, flag=wx.GROW)
else:
self.Filter = None
self.SetSizer(main_sizer)
self.Folder = folder
self.Editable = editable
self.TreeImageList = wx.ImageList(16, 16)
self.TreeImageDict = {}
for item_type, bitmap in [(DRIVE, "tree_drive"),
(FOLDER, "tree_folder"),
(FILE, "tree_file")]:
self.TreeImageDict[item_type] = self.TreeImageList.Add(GetBitmap(bitmap))
self.Tree.SetImageList(self.TreeImageList)
self.Filters = {}
if self.Filter is not None:
filter_parts = filter.split("|")
for idx in xrange(0, len(filter_parts), 2):
if filter_parts[idx + 1] == "*.*":
self.Filters[filter_parts[idx]] = ""
else:
self.Filters[filter_parts[idx]] = filter_parts[idx + 1].replace("*", "")
self.Filter.Append(filter_parts[idx])
if idx == 0:
self.Filter.SetStringSelection(filter_parts[idx])
self.CurrentFilter = self.Filters[self.Filter.GetStringSelection()]
else:
self.CurrentFilter = ""
def _GetFolderChildren(self, folderpath, recursive=True):
items = []
if wx.Platform == '__WXMSW__' and folderpath == "/":
for c in xrange(ord('a'), ord('z')):
drive = os.path.join("%s:\\" % chr(c))
if os.path.exists(drive):
items.append((drive, DRIVE, self._GetFolderChildren(drive, False)))
else:
try:
files = os.listdir(folderpath)
except:
return []
for filename in files:
if not filename.startswith("."):
filepath = os.path.join(folderpath, filename)
if os.path.isdir(filepath):
if recursive:
children = len(self._GetFolderChildren(filepath, False))
else:
children = 0
items.append((filename, FOLDER, children))
elif (self.CurrentFilter == "" or
os.path.splitext(filename)[1] == self.CurrentFilter):
items.append((filename, FILE, None))
if recursive:
items.sort(sort_folder)
return items
def SetFilter(self, filter):
self.CurrentFilter = filter
def GetTreeCtrl(self):
return self.Tree
def RefreshTree(self):
root = self.Tree.GetRootItem()
if not root.IsOk():
root = self.Tree.AddRoot("")
self.GenerateTreeBranch(root, self.Folder)
def GenerateTreeBranch(self, root, folderpath):
item, item_cookie = self.Tree.GetFirstChild(root)
for idx, (filename, item_type, children) in enumerate(self._GetFolderChildren(folderpath)):
if not item.IsOk():
item = self.Tree.AppendItem(root, filename, self.TreeImageDict[item_type])
if wx.Platform != '__WXMSW__':
item, item_cookie = self.Tree.GetNextChild(root, item_cookie)
elif self.Tree.GetItemText(item) != filename:
item = self.Tree.InsertItemBefore(root, idx, filename, self.TreeImageDict[item_type])
filepath = os.path.join(folderpath, filename)
if item_type != FILE:
if self.Tree.IsExpanded(item):
self.GenerateTreeBranch(item, filepath)
elif children > 0:
self.Tree.SetItemHasChildren(item)
item, item_cookie = self.Tree.GetNextChild(root, item_cookie)
to_delete = []
while item.IsOk():
to_delete.append(item)
item, item_cookie = self.Tree.GetNextChild(root, item_cookie)
for item in to_delete:
self.Tree.Delete(item)
def ExpandItem(self, item):
self.GenerateTreeBranch(item, self.GetPath(item))
self.Tree.Expand(item)
def OnTreeItemActivated(self, event):
self.ExpandItem(event.GetItem())
event.Skip()
def OnTreeLeftDown(self, event):
item, flags = self.Tree.HitTest(event.GetPosition())
if flags & wx.TREE_HITTEST_ONITEMBUTTON and not self.Tree.IsExpanded(item):
self.ExpandItem(item)
else:
event.Skip()
def OnTreeItemExpanded(self, event):
item = event.GetItem()
self.GenerateTreeBranch(item, self.GetPath(item))
event.Skip()
def OnTreeItemCollapsed(self, event):
item = event.GetItem()
self.Tree.DeleteChildren(item)
self.Tree.SetItemHasChildren(item)
event.Skip()
def OnTreeBeginLabelEdit(self, event):
item = event.GetItem()
if self.Editable and not self.Tree.ItemHasChildren(item):
event.Skip()
else:
event.Veto()
def OnTreeEndLabelEdit(self, event):
new_name = event.GetLabel()
if new_name != "":
old_filepath = self.GetPath(event.GetItem())
new_filepath = os.path.join(os.path.split(old_filepath)[0], new_name)
if new_filepath != old_filepath:
if not os.path.exists(new_filepath):
os.rename(old_filepath, new_filepath)
event.Skip()
else:
message = wx.MessageDialog(self,
_("File '%s' already exists!") % new_name,
_("Error"), wx.OK|wx.ICON_ERROR)
message.ShowModal()
message.Destroy()
event.Veto()
else:
event.Skip()
def OnFilterChanged(self, event):
self.CurrentFilter = self.Filters[self.Filter.GetStringSelection()]
self.RefreshTree()
event.Skip()
def _SelectItem(self, root, parts):
if len(parts) == 0:
self.Tree.SelectItem(root)
else:
item, item_cookie = self.Tree.GetFirstChild(root)
while item.IsOk():
if self.Tree.GetItemText(item) == parts[0]:
if (self.Tree.ItemHasChildren(item) and
not self.Tree.IsExpanded(item)):
self.Tree.Expand(item)
wx.CallAfter(self._SelectItem, item, parts[1:])
else:
self._SelectItem(item, parts[1:])
return
item, item_cookie = self.Tree.GetNextChild(root, item_cookie)
def SetPath(self, path):
if path.startswith(self.Folder):
root = self.Tree.GetRootItem()
if root.IsOk():
relative_path = path.replace(os.path.join(self.Folder, ""), "")
self._SelectItem(root, splitpath(relative_path))
def GetPath(self, item=None):
if item is None:
item = self.Tree.GetSelection()
if item.IsOk():
filepath = self.Tree.GetItemText(item)
parent = self.Tree.GetItemParent(item)
while parent.IsOk() and parent != self.Tree.GetRootItem():
filepath = os.path.join(self.Tree.GetItemText(parent), filepath)
parent = self.Tree.GetItemParent(parent)
return os.path.join(self.Folder, filepath)
return self.Folder