tree_treelist.py

来自「wxPython的基本示例程序」· Python 代码 · 共 105 行

import wx
import wx.gizmos
import data

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

        # Create an image list
        il = wx.ImageList(16,16)

        # Get some standard images from the art provider and add them
        # to the image list
        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)))
        

        # Create the tree
        self.tree = wx.gizmos.TreeListCtrl(self, style =
                                           wx.TR_DEFAULT_STYLE
                                           | wx.TR_FULL_ROW_HIGHLIGHT)

        # Give it the image list
        self.tree.AssignImageList(il)


        # create some columns
        self.tree.AddColumn("Class Name")
        self.tree.AddColumn("Description")
        self.tree.SetMainColumn(0) # the one with the tree in it...
        self.tree.SetColumnWidth(0, 200)
        self.tree.SetColumnWidth(1, 200)

        # Add a root node and assign it some images
        root = self.tree.AddRoot("wx.Object")
        self.tree.SetItemText(root, "A description of wx.Object", 1)
        self.tree.SetItemImage(root, self.fldridx,
                               wx.TreeItemIcon_Normal)
        self.tree.SetItemImage(root, self.fldropenidx,
                               wx.TreeItemIcon_Expanded)
        
        # Add nodes from our data set
        self.AddTreeNodes(root, data.tree)

        # Bind some interesting events
        self.Bind(wx.EVT_TREE_ITEM_EXPANDED, self.OnItemExpanded, self.tree)
        self.Bind(wx.EVT_TREE_ITEM_COLLAPSED, self.OnItemCollapsed, self.tree)
        self.Bind(wx.EVT_TREE_SEL_CHANGED, self.OnSelChanged, self.tree)
        self.Bind(wx.EVT_TREE_ITEM_ACTIVATED, self.OnActivated, self.tree)

        # Expand the first level
        self.tree.Expand(root)
        

    def AddTreeNodes(self, parentItem, items):
        """
        Recursively traverses the data structure, adding tree nodes to
        match it.
        """
        for item in items:
            if type(item) == str:
                newItem = self.tree.AppendItem(parentItem, item)
                self.tree.SetItemText(newItem, "A description of %s" % item, 1)
                self.tree.SetItemImage(newItem, self.fileidx,
                                       wx.TreeItemIcon_Normal)
            else:
                newItem = self.tree.AppendItem(parentItem, item[0])
                self.tree.SetItemText(newItem, "A description of %s" % item[0], 1)
                self.tree.SetItemImage(newItem, self.fldridx,
                                       wx.TreeItemIcon_Normal)
                self.tree.SetItemImage(newItem, self.fldropenidx,
                                       wx.TreeItemIcon_Expanded)
   
                self.AddTreeNodes(newItem, item[1])
                

    def GetItemText(self, item):
        if item:
            return self.tree.GetItemText(item)
        else:
            return ""
        
    def OnItemExpanded(self, evt):
        print "OnItemExpanded: ", self.GetItemText(evt.GetItem())
        
    def OnItemCollapsed(self, evt):
        print "OnItemCollapsed:", self.GetItemText(evt.GetItem())

    def OnSelChanged(self, evt):
        print "OnSelChanged:   ", self.GetItemText(evt.GetItem())

    def OnActivated(self, evt):
        print "OnActivated:    ", self.GetItemText(evt.GetItem())


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