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import wx
class PromptingComboBox(wx.ComboBox):
def __init__(self, parent, choices=[], style=0, **kwargs):
if choices is None:
choices = []
wx.ComboBox.__init__(self, parent, wx.ID_ANY, style=style, choices=choices, **kwargs)
self.choices = choices
self.Bind(wx.EVT_KEY_DOWN, self.on_button_down)
self.Bind(wx.EVT_TEXT, self.on_text_edit)
self.Bind(wx.EVT_TEXT_ENTER, self.on_text_edit)
self.ignore_text_event = False
self.delete_key = False
self.found_choice = False
self.parent = parent
def update_choices(self, choices):
self.choices = choices
def on_button_down(self, event):
if event.GetKeyCode() == 8:
self.delete_key = True
event.Skip()
def on_text_edit(self, event):
current_text = event.GetString()
if len(current_text) == 0 or current_text == " ":
self.delete_key = False
self.parent.on_combobox_change(event)
return
if self.ignore_text_event:
self.ignore_text_event = False
return
if self.delete_key:
self.delete_key = False
if self.found_choice:
current_text = current_text[:-1]
self.found_choice = False
for i, choice in enumerate(self.choices):
if choice.startswith(current_text.strip()):
self.ignore_text_event = True
self.SetValue(choice)
self.SetInsertionPoint(len(current_text))
self.SetTextSelection(len(current_text), len(choice))
self.found_choice = True
self.parent.on_combobox_change(event)
break
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