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Patch from FN that fixes bug in RefreshItem on an item that has no

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corresponding node in the tree yet (because its parent isn't expanded
yet) triggered an exception.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@45503 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robin Dunn
2007-04-16 18:59:00 +00:00
parent 3a41827a6d
commit 7d36c6a8eb
3 changed files with 38 additions and 50 deletions
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31
wxPython/wx/lib/mixins/treemixin.py
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@@ -25,8 +25,8 @@ The VirtualTree and DragAndDrop mixins force the wx.TR_HIDE_ROOT style.
Author: Frank Niessink <frank@niessink.com>
License: wxWidgets license
Version: 0.9.1
Date: 26 March 2007
Version: 1.0
Date: 15 April 2007
ExpansionState is based on code and ideas from Karsten Hilbert.
Andrea Gavana provided help with the CustomTreeCtrl integration.
@@ -40,14 +40,6 @@ class TreeAPIHarmonizer(object):
''' This class attempts to hide the differences in API between the
different tree controls that are part of wxPython. '''
def __init__(self, *args, **kwargs):
# CustomTreeCtrl uses a different keyword for the window style
# argument ('ctstyle'). To hide this, we replace the 'style' keyword
# by 'ctstyle' if we're mixed in with CustomTreeCtrl.
if isinstance(self, wx.lib.customtreectrl.CustomTreeCtrl):
kwargs['ctstyle'] = kwargs.pop('style', wx.TR_DEFAULT_STYLE)
super(TreeAPIHarmonizer, self).__init__(*args, **kwargs)
def __callSuper(self, methodName, default, *args, **kwargs):
# If our super class has a method called methodName, call it,
# otherwise return the default value.
@@ -148,13 +140,21 @@ class TreeAPIHarmonizer(object):
else:
selections = []
# If the root item is hidden, it should never be selected,
# unfortunately, CustomTreeCtrl and TreeCtrl allow it to be selected.
# unfortunately, CustomTreeCtrl allows it to be selected.
if self.HasFlag(wx.TR_HIDE_ROOT):
rootItem = self.GetRootItem()
if rootItem and rootItem in selections:
selections.remove(rootItem)
return selections
def GetFirstVisibleItem(self):
# TreeListCtrl raises an exception or even crashes when invoking
# GetFirstVisibleItem on an empty tree.
if self.GetRootItem():
return super(TreeAPIHarmonizer, self).GetFirstVisibleItem()
else:
return wx.TreeItemId()
def SelectItem(self, item, *args, **kwargs):
# Prevent the hidden root from being selected, otherwise TreeCtrl
# crashes
@@ -197,7 +197,7 @@ class TreeAPIHarmonizer(object):
super(TreeAPIHarmonizer, self).ExpandAll(item)
def ExpandAllChildren(self, item):
# TreeListCtrl doesn't have ExpandallChildren
# TreeListCtrl and CustomTreeCtrl don't have ExpandallChildren
try:
super(TreeAPIHarmonizer, self).ExpandAllChildren(item)
except AttributeError:
@@ -352,7 +352,12 @@ class VirtualTree(TreeAPIHarmonizer, TreeHelper):
def RefreshItem(self, index):
''' Redraws the item with the specified index. '''
item = self.GetItemByIndex(index)
try:
item = self.GetItemByIndex(index)
except IndexError:
# There's no corresponding item for index, because its parent
# has not been expanded yet.
return
hasChildren = bool(self.OnGetChildrenCount(index))
self.DoRefreshItem(item, index, hasChildren)