93 lines
3.6 KiB
Python
93 lines
3.6 KiB
Python
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import wx
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import data
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class TestFrame(wx.Frame):
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def __init__(self):
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wx.Frame.__init__(self, None, title="virtual tree with icons", size=(400,500))
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il = wx.ImageList(16,16)
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self.fldridx = il.Add(
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wx.ArtProvider.GetBitmap(wx.ART_FOLDER, wx.ART_OTHER, (16,16)))
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self.fldropenidx = il.Add(
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wx.ArtProvider.GetBitmap(wx.ART_FILE_OPEN, wx.ART_OTHER, (16,16)))
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self.fileidx = il.Add(
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wx.ArtProvider.GetBitmap(wx.ART_NORMAL_FILE, wx.ART_OTHER, (16,16)))
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self.tree = wx.TreeCtrl(self)
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self.tree.AssignImageList(il)
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root = self.tree.AddRoot("wx.Object")
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self.tree.SetItemImage(root, self.fldridx,
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wx.TreeItemIcon_Normal)
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self.tree.SetItemImage(root, self.fldropenidx,
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wx.TreeItemIcon_Expanded)
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# Instead of adding nodes for the whole tree, just attach some
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# data to the root node so that it can find and add its child
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# nodes when it is expanded, and mark it as having children so
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# it will be expandable.
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self.tree.SetItemPyData(root, data.tree)
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self.tree.SetItemHasChildren(root, True)
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# Bind some interesting events
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self.Bind(wx.EVT_TREE_ITEM_EXPANDED, self.OnItemExpanded, self.tree)
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self.Bind(wx.EVT_TREE_ITEM_COLLAPSED, self.OnItemCollapsed, self.tree)
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self.Bind(wx.EVT_TREE_SEL_CHANGED, self.OnSelChanged, self.tree)
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self.Bind(wx.EVT_TREE_ITEM_ACTIVATED, self.OnActivated, self.tree)
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self.Bind(wx.EVT_TREE_ITEM_EXPANDING, self.OnItemExpanding, self.tree)
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self.tree.Expand(root)
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def AddTreeNodes(self, parentItem):
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"""
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Add nodes for just the children of the parentItem
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"""
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items = self.tree.GetItemPyData(parentItem)
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for item in items:
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if type(item) == str:
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# a leaf node
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newItem = self.tree.AppendItem(parentItem, item)
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self.tree.SetItemImage(newItem, self.fileidx,
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wx.TreeItemIcon_Normal)
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else:
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# this item has children
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newItem = self.tree.AppendItem(parentItem, item[0])
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self.tree.SetItemImage(newItem, self.fldridx,
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wx.TreeItemIcon_Normal)
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self.tree.SetItemImage(newItem, self.fldropenidx,
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wx.TreeItemIcon_Expanded)
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self.tree.SetItemPyData(newItem, item[1])
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self.tree.SetItemHasChildren(newItem, True)
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def GetItemText(self, item):
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if item:
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return self.tree.GetItemText(item)
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else:
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return ""
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def OnItemExpanded(self, evt):
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print "OnItemExpanded: ", self.GetItemText(evt.GetItem())
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def OnItemExpanding(self, evt):
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# When the item is about to be expanded add the first level of child nodes
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print "OnItemExpanding:", self.GetItemText(evt.GetItem())
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self.AddTreeNodes(evt.GetItem())
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def OnItemCollapsed(self, evt):
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print "OnItemCollapsed:", self.GetItemText(evt.GetItem())
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# And remove them when collapsed as we don't need them any longer
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self.tree.DeleteChildren(evt.GetItem())
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def OnSelChanged(self, evt):
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print "OnSelChanged: ", self.GetItemText(evt.GetItem())
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def OnActivated(self, evt):
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print "OnActivated: ", self.GetItemText(evt.GetItem())
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app = wx.PySimpleApp(redirect=True)
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frame = TestFrame()
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frame.Show()
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app.MainLoop()
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