Wxpython Dnd listctrl test

wxdnd.py

import wx
import sys
from wx._core import EVT_LEFT_UP

class MainWindow(wx.Frame):
    def __init__(self):
        wx.Frame.__init__(self, None, title='Python Listbox test')
        self.setup_menu()
        self.setup_list()
        
    def setup_menu(self):
        menu_bar = wx.MenuBar()
        file_menu = wx.Menu()
        self.menu_exit = file_menu.Append(wx.ID_EXIT, 'Bye', "quits the application")
        
        self.SetMenuBar(menu_bar)
        menu_bar.Append(file_menu, '&File')
        
    def setup_list(self):
        self.listbox = DraggableListCtrl(self)

class MainWindowController(object):
    def __init__(self):
        self.window = MainWindow()
        self.register_listeners()
        self.populate_list()
        self.window.Show()
    
    def register_listeners(self):
        self.window.Bind(wx.EVT_MENU, self.quit)
        
        
    def populate_list(self):
        self.ds = ListDataSource(range(100))
        self.window.listbox.set_data_source(self.ds)
        self.window.listbox.InsertColumn(0, 'MyList')
        self.window.listbox.refresh()
        
    def quit(self, event):
        sys.exit()
        

class ListDataSource(object):
    def __init__(self, items):
        self.items = items
    
    def getItemCount(self):
        return len(self.items)
    
    def getItemText(self, item_idx, col_idx):
        return self.items[item_idx]
    
    def move_item(self, from_idx, to_idx):
        item = self.items[from_idx]
        self.items[:] = self.items[:from_idx] + self.items[(from_idx+1):]
        if to_idx < from_idx:
            to_idx = to_idx +1
        self.items.insert(to_idx, item)
        return to_idx


        
class DraggableListCtrl(wx.ListCtrl):
    def __init__(self, parent):
        wx.ListCtrl.__init__(self, parent, style=wx.LC_REPORT | wx.LC_VIRTUAL | wx.LC_SINGLE_SEL)
        self.Bind(wx.EVT_LIST_BEGIN_DRAG, self._start_drag)
    
    def set_data_source(self, data_source):
        self.data_source = data_source
        
    def refresh(self):
        self.SetItemCount(self.data_source.getItemCount())
        self.Refresh()
    
    def OnGetItemText(self, item_idx, col_idx):
        return self.data_source.getItemText(item_idx, col_idx)
    
    def _start_drag(self, event):
        self.drag_start = event.Index
        self.Bind(EVT_LEFT_UP, handler=self._finish_drag)
        
    def _finish_drag(self, event):
        drag_end = self.HitTest(event.Position)[0]
        final_idx = self.data_source.move_item(self.drag_start, drag_end)
        self.refresh()
        self.Focus(final_idx)
        self.Select(final_idx) 
        self.Unbind(EVT_LEFT_UP, handler=self._finish_drag)
    
    
        
class ListDropTarget(wx.TextDropTarget):
    def OnDropText(self, x, y, text):
        print text


app = wx.App()
controller = MainWindowController()
app.MainLoop()