Tree node expanded event : Tree « wxPython « Python Tutorial





Tree node expanded event
import wx

class TestFrame(wx.Frame):
    def __init__(self):
        wx.Frame.__init__(self, None, title="tree: misc tests", size=(400,500))

        il = wx.ImageList(16,16)

        self.fldridx = il.Add(wx.ArtProvider.GetBitmap(wx.ART_FOLDER, wx.ART_OTHER, (16,16)))
        self.fldropenidx = il.Add(wx.ArtProvider.GetBitmap(wx.ART_FILE_OPEN,   wx.ART_OTHER, (16,16)))
        self.fileidx = il.Add(wx.ArtProvider.GetBitmap(wx.ART_NORMAL_FILE, wx.ART_OTHER, (16,16)))
        
        self.tree = wx.TreeCtrl(self, style=wx.TR_DEFAULT_STYLE | wx.TR_EDIT_LABELS)

        self.tree.AssignImageList(il)

        root = self.tree.AddRoot("wx.Object")
        self.tree.SetItemPyData(root, None)
        self.tree.SetItemImage(root, self.fldridx,wx.TreeItemIcon_Normal)
        self.tree.SetItemImage(root, self.fldropenidx,wx.TreeItemIcon_Expanded)
        
        tree = ["A","B","C","D","E","F","G","H"]

        self.AddTreeNodes(root, tree)

        self.tree.Expand(root)

        self.Bind(wx.EVT_TREE_ITEM_EXPANDED, self.OnItemExpanded, self.tree)
            

    def OnItemExpanded(self, evt):
        print "OnItemExpanded: ", self.GetItemText(evt.GetItem())
    def AddTreeNodes(self, parentItem, items):
        for item in items:
            if type(item) == str:
                newItem = self.tree.AppendItem(parentItem, item)
                self.tree.SetItemPyData(newItem, None)
                self.tree.SetItemImage(newItem, self.fileidx,wx.TreeItemIcon_Normal)
            else:
                newItem = self.tree.AppendItem(parentItem, item[0])
                self.tree.SetItemPyData(newItem, None)
                self.tree.SetItemImage(newItem, self.fldridx,wx.TreeItemIcon_Normal)
                self.tree.SetItemImage(newItem, self.fldropenidx,wx.TreeItemIcon_Expanded)
   
                self.AddTreeNodes(newItem, item[1])

app = wx.PySimpleApp(redirect=True)
frame = TestFrame()
frame.Show()
app.MainLoop()










19.45.Tree
19.45.1.Create a tree and expand its childrenCreate a tree and expand its children
19.45.2.Set tree iconSet tree icon
19.45.3.Print tree node outPrint tree node out
19.45.4.Edit tree nodeEdit tree node
19.45.5.Sort tree nodesSort tree nodes
19.45.6.Delete a tree nodeDelete a tree node
19.45.7.Find a tree nodeFind a tree node
19.45.8.Tree node expanded eventTree node expanded event
19.45.9.Tree node collapse eventTree node collapse event
19.45.10.Tree node selection changed eventTree node selection changed event
19.45.11.Tree node activated eventTree node activated event
19.45.12.Tree node begin edit eventTree node begin edit event