#---------------------------------------------------------------------------- # Name: masked.combobox.py # Authors: Will Sadkin # Email: wsadkin@nameconnector.com # Created: 02/11/2003 # Copyright: (c) 2003 by Will Sadkin, 2003 # License: wxWidgets license # # Tags: py3-port, phoenix-port, unittest, documented # #---------------------------------------------------------------------------- # # This masked edit class allows for the semantics of masked controls # to be applied to combo boxes. # #---------------------------------------------------------------------------- """ Provides masked edit capabilities within a ComboBox format, as well as a base class from which you can derive masked comboboxes tailored to a specific function. See maskededit module overview for how to configure the control. """ import wx from wx.lib.masked import * # jmg 12/9/03 - when we cut ties with Py 2.2 and earlier, this would # be a good place to implement the 2.3 logger class from wx.tools.dbg import Logger ##dbg = Logger() ##dbg(enable=1) ## ---------- ---------- ---------- ---------- ---------- ---------- ---------- ## Because calling SetSelection programmatically does not fire EVT_COMBOBOX ## events, we have to do it ourselves when we auto-complete. class MaskedComboBoxSelectEvent(wx.PyCommandEvent): """ Because calling SetSelection programmatically does not fire EVT_COMBOBOX events, the derived control has to do it itself when it auto-completes. """ def __init__(self, id, selection = 0, object=None): wx.PyCommandEvent.__init__(self, wx.wxEVT_COMMAND_COMBOBOX_SELECTED, id) self.__selection = selection self.SetEventObject(object) def GetSelection(self): """Retrieve the value of the control at the time this event was generated.""" return self.__selection class MaskedComboBoxEventHandler(wx.EvtHandler): """ This handler ensures that the derived control can react to events from the base control before any external handlers run, to ensure proper behavior. """ def __init__(self, combobox): wx.EvtHandler.__init__(self) self.combobox = combobox combobox.PushEventHandler(self) self.Bind(wx.EVT_SET_FOCUS, self.combobox._OnFocus ) ## defeat automatic full selection self.Bind(wx.EVT_KILL_FOCUS, self.combobox._OnKillFocus ) ## run internal validator self.Bind(wx.EVT_LEFT_DCLICK, self.combobox._OnDoubleClick) ## select field under cursor on dclick self.Bind(wx.EVT_RIGHT_UP, self.combobox._OnContextMenu ) ## bring up an appropriate context menu self.Bind(wx.EVT_CHAR, self.combobox._OnChar ) ## handle each keypress self.Bind(wx.EVT_KEY_DOWN, self.combobox._OnKeyDownInComboBox ) ## for special processing of up/down keys self.Bind(wx.EVT_KEY_DOWN, self.combobox._OnKeyDown ) ## for processing the rest of the control keys ## (next in evt chain) self.Bind(wx.EVT_COMBOBOX, self.combobox._OnDropdownSelect ) ## to bring otherwise completely independent base ## ctrl selection into maskededit framework self.Bind(wx.EVT_TEXT, self.combobox._OnTextChange ) ## color control appropriately & keep ## track of previous value for undo class BaseMaskedComboBox( wx.ComboBox, MaskedEditMixin ): """ Base class for generic masked edit comboboxes; allows auto-complete of values. It is not meant to be instantiated directly, but rather serves as a base class for any subsequent refinements. """ def __init__( self, parent, id=-1, value = '', pos = wx.DefaultPosition, size = wx.DefaultSize, choices = [], style = wx.CB_DROPDOWN, validator = wx.DefaultValidator, name = "maskedComboBox", setupEventHandling = True, **kwargs): """ Default class constructor. :param Window `parent`: the window parent. Must not be ``None``; :param integer `id`: window identifier. A value of -1 indicates a default value; :param string `value`: value to be shown; :param `pos`: the control position. A value of (-1, -1) indicates a default position, chosen by either the windowing system or wxPython, depending on platform; :type `pos`: tuple or :class:`Point` :param `size`: the control size. A value of (-1, -1) indicates a default size, chosen by either the windowing system or wxPython, depending on platform; :param list `choices`: a list of valid choices; :param integer `style`: the window style; :param Validator `validator`: this is mainly provided for data-transfer, as control does its own validation; :param string `name`: the window name; :param boolean `setupEventHandling`: setup event handling by default. """ kwargs['choices'] = choices ## set up maskededit to work with choice list too self._prevSelection = (-1, -1) ## Since combobox completion is case-insensitive, always validate same way if 'compareNoCase' not in kwargs: kwargs['compareNoCase'] = True MaskedEditMixin.__init__( self, name, **kwargs ) self._choices = self._ctrl_constraints._choices ## dbg('self._choices:', self._choices) if self._ctrl_constraints._alignRight: choices = [choice.rjust(self._masklength) for choice in choices] else: choices = [choice.ljust(self._masklength) for choice in choices] wx.ComboBox.__init__(self, parent, id, value='', pos=pos, size = size, choices=choices, style=style|wx.WANTS_CHARS, validator=validator, name=name) self.controlInitialized = True self._PostInit(style=style, setupEventHandling=setupEventHandling, name=name, value=value, **kwargs) def _PostInit(self, style=wx.CB_DROPDOWN, setupEventHandling = True, ## setup event handling by default): name = "maskedComboBox", value='', **kwargs): # This is necessary, because wxComboBox currently provides no # method for determining later if this was specified in the # constructor for the control... self.__readonly = style & wx.CB_READONLY == wx.CB_READONLY if not hasattr(self, 'controlInitialized'): self.controlInitialized = True ## must have been called via XRC, therefore base class is constructed if 'choices' not in kwargs: choices=[] kwargs['choices'] = choices ## set up maskededit to work with choice list too self._choices = [] ## Since combobox completion is case-insensitive, always validate same way if 'compareNoCase' not in kwargs: kwargs['compareNoCase'] = True MaskedEditMixin.__init__( self, name, **kwargs ) self._choices = self._ctrl_constraints._choices ## dbg('self._choices:', self._choices) if self._ctrl_constraints._alignRight: choices = [choice.rjust(self._masklength) for choice in choices] else: choices = [choice.ljust(self._masklength) for choice in choices] wx.ComboBox.Clear(self) wx.ComboBox.AppendItems(self, choices) # Set control font - fixed width by default self._setFont() if self._autofit: self.SetClientSize(self._CalcSize()) width = self.GetSize().width height = self.GetBestSize().height self.SetInitialSize((width, height)) if value: # ensure value is width of the mask of the control: if self._ctrl_constraints._alignRight: value = value.rjust(self._masklength) else: value = value.ljust(self._masklength) if self.__readonly: self.SetStringSelection(value) else: self._SetInitialValue(value) self._SetKeycodeHandler(wx.WXK_UP, self._OnSelectChoice) self._SetKeycodeHandler(wx.WXK_DOWN, self._OnSelectChoice) self.replace_next_combobox_event = False self.correct_selection = -1 if setupEventHandling: ## Setup event handling functions through event handler object, ## to guarantee processing prior to giving event callbacks from ## outside the class: self.evt_handler = MaskedComboBoxEventHandler(self) self.Bind(wx.EVT_WINDOW_DESTROY, self.OnWindowDestroy ) def __repr__(self): return "" % self.GetValue() def OnWindowDestroy(self, event): # clean up associated event handler object: if self.RemoveEventHandler(self.evt_handler): wx.CallAfter(self.evt_handler.Destroy) event.Skip() def _CalcSize(self, size=None): """ Calculate automatic size if allowed; augment base mixin function to account for the selector button. """ size = self._calcSize(size) return (size[0]+20, size[1]) def SetFont(self, *args, **kwargs): """ Set the font, then recalculate control size, if appropriate. see :meth:`ComboBox.SetFont` for valid arguments """ wx.ComboBox.SetFont(self, *args, **kwargs) if self._autofit: ## dbg('calculated size:', self._CalcSize()) self.SetClientSize(self._CalcSize()) width = self.GetSize().width height = self.GetBestSize().height ## dbg('setting client size to:', (width, height)) self.SetInitialSize((width, height)) def _GetSelection(self): """ Allow mixin to get the text selection of this control. REQUIRED by any class derived from MaskedEditMixin. """ ## dbg('MaskedComboBox::_GetSelection()') return self.GetMark() def _SetSelection(self, sel_start, sel_to): """ Allow mixin to set the text selection of this control. REQUIRED by any class derived from MaskedEditMixin. """ ## dbg('MaskedComboBox::_SetSelection: setting mark to (%d, %d)' % (sel_start, sel_to)) if not self.__readonly: return self.SetTextSelection( sel_start, sel_to ) def _GetInsertionPoint(self): ## dbg('MaskedComboBox::_GetInsertionPoint()', indent=1) ## ret = self.GetInsertionPoint() # work around new bug in 2.5, in which the insertion point # returned is always at the right side of the selection, # rather than the start, as is the case with TextCtrl. ret = self.GetMark()[0] ## dbg('returned', ret, indent=0) return ret def _SetInsertionPoint(self, pos): ## dbg('MaskedComboBox::_SetInsertionPoint(%d)' % pos) if not self.__readonly: self.SetInsertionPoint(pos) def IsEmpty(*args, **kw): return MaskedEditMixin.IsEmpty(*args, **kw) def _GetValue(self): """ Allow mixin to get the raw value of the control with this function. REQUIRED by any class derived from MaskedEditMixin. """ return self.GetValue() def _SetValue(self, value): """ Allow mixin to set the raw value of the control with this function. REQUIRED by any class derived from MaskedEditMixin. """ # For wxComboBox, ensure that values are properly padded so that # if varying length choices are supplied, they always show up # in the window properly, and will be the appropriate length # to match the mask: if self._ctrl_constraints._alignRight: value = value.rjust(self._masklength) else: value = value.ljust(self._masklength) # Record current selection and insertion point, for undo self._prevSelection = self._GetSelection() self._prevInsertionPoint = self._GetInsertionPoint() ## dbg('MaskedComboBox::_SetValue(%s), selection beforehand: %d' % (value, self.GetSelection())) wx.ComboBox.SetValue(self, value) ## dbg('MaskedComboBox::_SetValue(%s), selection now: %d' % (value, self.GetSelection())) # text change events don't always fire, so we check validity here # to make certain formatting is applied: self._CheckValid() def SetValue(self, value): """ This function redefines the externally accessible :meth:`ComboBox.SetValue` to be a smart "paste" of the text in question, so as not to corrupt the masked control. .. note:: This must be done in the class derived from the base wx control. """ ## dbg('MaskedComboBox::SetValue(%s)' % value, indent=1) if not self._mask: wx.ComboBox.SetValue(value) # revert to base control behavior ## dbg('no mask; deferring to base class', indent=0) return # else... # empty previous contents, replacing entire value: ## dbg('MaskedComboBox::SetValue: selection beforehand: %d' % (self.GetSelection())) self._SetInsertionPoint(0) self._SetSelection(0, self._masklength) if( len(value) < self._masklength # value shorter than control and (self._isFloat or self._isInt) # and it's a numeric control and self._ctrl_constraints._alignRight ): # and it's a right-aligned control # try to intelligently "pad out" the value to the right size: value = self._template[0:self._masklength - len(value)] + value ## dbg('padded value = "%s"' % value) # For wxComboBox, ensure that values are properly padded so that # if varying length choices are supplied, they always show up # in the window properly, and will be the appropriate length # to match the mask: elif self._ctrl_constraints._alignRight: value = value.rjust(self._masklength) else: value = value.ljust(self._masklength) # make SetValue behave the same as if you had typed the value in: try: value, replace_to = self._Paste(value, raise_on_invalid=True, just_return_value=True) if self._isFloat: self._isNeg = False # (clear current assumptions) value = self._adjustFloat(value) elif self._isInt: self._isNeg = False # (clear current assumptions) value = self._adjustInt(value) elif self._isDate and not self.IsValid(value) and self._4digityear: value = self._adjustDate(value, fixcentury=True) except ValueError: # If date, year might be 2 digits vs. 4; try adjusting it: if self._isDate and self._4digityear: dateparts = value.split(' ') dateparts[0] = self._adjustDate(dateparts[0], fixcentury=True) value = ' '.join(dateparts) value = self._Paste(value, raise_on_invalid=True, just_return_value=True) else: raise ## dbg('adjusted value: "%s"' % value) # Attempt to compensate for fact that calling .SetInsertionPoint() makes the # selection index -1, even if the resulting set value is in the list. # So, if we are setting a value that's in the list, use index selection instead. if value in self._choices: index = self._choices.index(value) self._prevValue = self._curValue self._curValue = self._choices[index] self._ctrl_constraints._autoCompleteIndex = index self.SetSelection(index) else: self._SetValue(value) #### dbg('queuing insertion after .SetValue', replace_to) wx.CallAfter(self._SetInsertionPoint, replace_to) wx.CallAfter(self._SetSelection, replace_to, replace_to) ## dbg(indent=0) def _Refresh(self): """ Allow mixin to refresh the base control with this function. REQUIRED by any class derived from MaskedEditMixin. """ wx.ComboBox.Refresh(self) def Refresh(self): """ This function redefines the externally accessible :meth:`ComboBox.Refresh` to validate the contents of the masked control as it refreshes. .. note:: This must be done in the class derived from the base wx control. """ self._CheckValid() self._Refresh() def _IsEditable(self): """ Allow mixin to determine if the base control is editable with this function. REQUIRED by any class derived from MaskedEditMixin. """ return not self.__readonly def Cut(self): """ This function redefines the externally accessible :meth:`ComboBox.Cut` to be a smart "erase" of the text in question, so as not to corrupt the masked control. .. note:: This must be done in the class derived from the base wx control. """ if self._mask: self._Cut() # call the mixin's Cut method else: wx.ComboBox.Cut(self) # else revert to base control behavior def Paste(self): """ This function redefines the externally accessible :meth:`ComboBox.Paste` to be a smart "paste" of the text in question, so as not to corrupt the masked control. .. note:: This must be done in the class derived from the base wx control. """ if self._mask: self._Paste() # call the mixin's Paste method else: wx.ComboBox.Paste(self) # else revert to base control behavior def Undo(self): """ This function defines the undo operation for the control. (The default undo is 1-deep.) """ if not self.__readonly: if self._mask: self._Undo() else: wx.ComboBox.Undo(self) # else revert to base control behavior def Append( self, choice, clientData=None ): """ This base control function override is necessary so the control can keep track of any additions to the list of choices, because :class:`ComboBox` doesn't have an accessor for the choice list. The code here is the same as in the SetParameters() mixin function, but is done for the individual value as appended, so the list can be built incrementally without speed penalty. """ if self._mask: if not isinstance(choice, six.string_types): raise TypeError('%s: choices must be a sequence of strings' % str(self._index)) elif not self.IsValid(choice): raise ValueError('%s: "%s" is not a valid value for the control as specified.' % (str(self._index), choice)) if not self._ctrl_constraints._choices: self._ctrl_constraints._compareChoices = [] self._ctrl_constraints._choices = [] self._hasList = True compareChoice = choice.strip() if self._ctrl_constraints._compareNoCase: compareChoice = compareChoice.lower() if self._ctrl_constraints._alignRight: choice = choice.rjust(self._masklength) else: choice = choice.ljust(self._masklength) if self._ctrl_constraints._fillChar != ' ': choice = choice.replace(' ', self._fillChar) ## dbg('updated choice:', choice) self._ctrl_constraints._compareChoices.append(compareChoice) self._ctrl_constraints._choices.append(choice) self._choices = self._ctrl_constraints._choices # (for shorthand) if( not self.IsValid(choice) and (not self._ctrl_constraints.IsEmpty(choice) or (self._ctrl_constraints.IsEmpty(choice) and self._ctrl_constraints._validRequired) ) ): raise ValueError('"%s" is not a valid value for the control "%s" as specified.' % (choice, self.name)) wx.ComboBox.Append(self, choice, clientData) def AppendItems( self, choices ): """ :meth:`~lib.masked.combobox.ComboBox.AppendItems` is handled in terms of :meth:`lib.masked.combobox.ComboBox.Append`, to avoid code replication. """ for choice in choices: self.Append(choice) def Clear( self ): """ This base control function override is necessary so the derived control can keep track of any additions to the list of choices, because :class:`ComboBox` doesn't have an accessor for the choice list. """ if self._mask: self._choices = [] self._ctrl_constraints._autoCompleteIndex = -1 if self._ctrl_constraints._choices: self.SetCtrlParameters(choices=[]) wx.ComboBox.Clear(self) def _OnCtrlParametersChanged(self): """ This overrides the mixin's default OnCtrlParametersChanged to detect changes in choice list, so masked.Combobox can update the base control: """ if self.controlInitialized and self._choices != self._ctrl_constraints._choices: wx.ComboBox.Clear(self) self._choices = self._ctrl_constraints._choices for choice in self._choices: wx.ComboBox.Append( self, choice ) # Not all wx platform implementations have .GetMark, so we make the following test, # and fall back to our old hack if they don't... # if not hasattr(wx.ComboBox, 'GetMark'): def GetMark(self): """ This function is a hack to make up for the fact that :class:`ComboBox` has no method for returning the selected portion of its edit control. It works, but has the nasty side effect of generating lots of intermediate events. """ ## dbg(suspend=1) # turn off debugging around this function ## dbg('MaskedComboBox::GetMark', indent=1) if self.__readonly: ## dbg(indent=0) return 0, 0 # no selection possible for editing ## sel_start, sel_to = wxComboBox.GetMark(self) # what I'd *like* to have! sel_start = sel_to = self.GetInsertionPoint() ## dbg("current sel_start:", sel_start) value = self.GetValue() ## dbg('value: "%s"' % value) self._ignoreChange = True # tell _OnTextChange() to ignore next event (if any) wx.ComboBox.Cut(self) newvalue = self.GetValue() ## dbg("value after Cut operation:", newvalue) if newvalue != value: # something was selected; calculate extent ## dbg("something selected") sel_to = sel_start + len(value) - len(newvalue) wx.ComboBox.SetValue(self, value) # restore original value and selection (still ignoring change) wx.ComboBox.SetInsertionPoint(self, sel_start) wx.ComboBox.SetMark(self, sel_start, sel_to) self._ignoreChange = False # tell _OnTextChange() to pay attn again ## dbg('computed selection:', sel_start, sel_to, indent=0, suspend=0) return sel_start, sel_to else: def GetMark(self): ## dbg('MaskedComboBox::GetMark()', indent = 1) ret = wx.ComboBox.GetTextSelection(self) ## dbg('returned', ret, indent=0) return ret def SetSelection(self, index): """ Necessary override for bookkeeping on choice selection, to keep current value current. :param integer `index`: index to choice item to be set """ ## dbg('MaskedComboBox::SetSelection(%d)' % index, indent=1) if self._mask: self._prevValue = self._curValue self._ctrl_constraints._autoCompleteIndex = index if index != -1: self._curValue = self._choices[index] else: self._curValue = None wx.ComboBox.SetSelection(self, index) ## dbg('selection now: %d' % self.GetCurrentSelection(), indent=0) def _OnKeyDownInComboBox(self, event): """ This function is necessary because navigation and control key events do not seem to normally be seen by the wxComboBox's EVT_CHAR routine. (Tabs don't seem to be visible no matter what, except for CB_READONLY controls, for some bizarre reason... {:-( ) """ key = event.GetKeyCode() ## dbg('MaskedComboBox::OnKeyDownInComboBox(%d)' % key) if event.GetKeyCode() in self._nav + self._control: if not self._IsEditable(): # WANTS_CHARS with CB_READONLY apparently prevents navigation on WXK_TAB; # ensure we can still navigate properly, as maskededit mixin::OnChar assumes # that event.Skip() will just work, but it doesn't: if key in self._keyhandlers: self._keyhandlers[key](event) # else pass else: ## dbg('calling OnChar()') self._OnChar(event) else: event.Skip() # let mixin default KeyDown behavior occur ## dbg(indent=0) def _OnDropdownSelect(self, event): """ This function appears to be necessary because dropdown selection seems to manipulate the contents of the control in an inconsistent way, properly changing the selection index, but *not* the value. (!) Calling SetSelection() on a selection event for the same selection would seem like a nop, but it seems to fix the problem. """ ## dbg('MaskedComboBox::OnDropdownSelect(%d)' % event.GetSelection(), indent=1) if self.replace_next_combobox_event: ## dbg('replacing EVT_COMBOBOX') self.replace_next_combobox_event = False self._OnAutoSelect(self._ctrl_constraints, self.correct_selection) else: ## dbg('skipping EVT_COMBOBOX') event.Skip() ## dbg(indent=0) def _OnSelectChoice(self, event): """ This function appears to be necessary, because the processing done on the text of the control somehow interferes with the combobox's selection mechanism for the arrow keys. """ ## dbg('MaskedComboBox::OnSelectChoice', indent=1) if not self._mask: event.Skip() return value = self.GetValue().strip() if self._ctrl_constraints._compareNoCase: value = value.lower() if event.GetKeyCode() == wx.WXK_UP: direction = -1 else: direction = 1 match_index, partial_match = self._autoComplete( direction, self._ctrl_constraints._compareChoices, value, self._ctrl_constraints._compareNoCase, current_index = self._ctrl_constraints._autoCompleteIndex) if match_index is not None: ## dbg('setting selection to', match_index) # issue appropriate event to outside: self._OnAutoSelect(self._ctrl_constraints, match_index=match_index) self._CheckValid() keep_processing = False else: pos = self._adjustPos(self._GetInsertionPoint(), event.GetKeyCode()) field = self._FindField(pos) if self.IsEmpty() or not field._hasList: ## dbg('selecting 1st value in list') self._OnAutoSelect(self._ctrl_constraints, match_index=0) self._CheckValid() keep_processing = False else: # attempt field-level auto-complete ## dbg(indent=0) keep_processing = self._OnAutoCompleteField(event) ## dbg('keep processing?', keep_processing, indent=0) return keep_processing def _OnAutoSelect(self, field, match_index=None): """ Override mixin (empty) autocomplete handler, so that autocompletion causes combobox to update appropriately. Additionally allow items that aren't in the drop down. """ ## dbg('MaskedComboBox::OnAutoSelect(%d, %s)' % (field._index, repr(match_index)), indent=1) ## field._autoCompleteIndex = match if isinstance(match_index, int): if field == self._ctrl_constraints: self.SetSelection(match_index) ## dbg('issuing combo selection event') self.GetEventHandler().ProcessEvent( MaskedComboBoxSelectEvent( self.GetId(), match_index, self ) ) self._CheckValid() ## dbg('field._autoCompleteIndex:', match) ## dbg('self.GetCurrentSelection():', self.GetCurrentSelection()) end = self._goEnd(getPosOnly=True) ## dbg('scheduling set of end position to:', end) # work around bug in wx 2.5 wx.CallAfter(self.SetInsertionPoint, 0) wx.CallAfter(self.SetInsertionPoint, end) elif isinstance(match_index, six.string_types): ## dbg('CallAfter SetValue') # Preserve the textbox contents # See commentary in _OnReturn docstring. wx.CallAfter(self.SetValue, match_index) #### dbg('queuing insertion after .SetValue', replace_to) ## dbg(indent=0) def _OnReturn(self, event): """ For wx.ComboBox, it seems that if you hit return when the dropdown is dropped, the event that dismisses the dropdown will also blank the control, because of the implementation of wxComboBox. So this function examines the selection and if it is -1, and the value according to (the base control!) is a value in the list, then it schedules a programmatic wxComboBox.SetSelection() call to pick the appropriate item in the list. (and then does the usual OnReturn bit.) If the value isn't a value in the list then allow the current textbox contents to stay. """ ## dbg('MaskedComboBox::OnReturn', indent=1) ## dbg('current value: "%s"' % self.GetValue(), 'current selection:', self.GetCurrentSelection()) if self.GetCurrentSelection() == -1 and self.GetValue().lower().strip() in self._ctrl_constraints._compareChoices: ## dbg('attempting to correct the selection to make it %d' % self._ctrl_constraints._autoCompleteIndex) ## wx.CallAfter(self.SetSelection, self._ctrl_constraints._autoCompleteIndex) self.replace_next_combobox_event = True self.correct_selection = self._ctrl_constraints._autoCompleteIndex else: # Not doing this causes the item to be empty after hitting return on a non-selection while the drop # down is showing. Not all masked comboboxes require choices from an autocomplete list. self.replace_next_combobox_event = True self.correct_selection = self._GetValue() event.KeyCode = wx.WXK_TAB event.Skip() ## dbg(indent=0) def _LostFocus(self): ## dbg('MaskedComboBox::LostFocus; Selection=%d, value="%s"' % (self.GetSelection(), self.GetValue())) if self.GetCurrentSelection() == -1 and self.GetValue().lower().strip() in self._ctrl_constraints._compareChoices: ## dbg('attempting to correct the selection to make it %d' % self._ctrl_constraints._autoCompleteIndex) wx.CallAfter(self.SetSelection, self._ctrl_constraints._autoCompleteIndex) class ComboBox( BaseMaskedComboBox, MaskedEditAccessorsMixin ): """ The "user-visible" masked combobox control, this class is identical to the BaseMaskedComboBox class it's derived from. (This extra level of inheritance allows us to add the generic set of masked edit parameters only to this class while allowing other classes to derive from the "base" masked combobox control, and provide a smaller set of valid accessor functions.) See BaseMaskedComboBox for available methods. """ pass class PreMaskedComboBox( BaseMaskedComboBox, MaskedEditAccessorsMixin ): """ This class exists to support the use of XRC subclassing. """ # This should really be wx.EVT_WINDOW_CREATE but it is not # currently delivered for native controls on all platforms, so # we'll use EVT_SIZE instead. It should happen shortly after the # control is created as the control is set to its "best" size. _firstEventType = wx.EVT_SIZE def __init__(self): wx.ComboBox.__init__(self) self.Bind(self._firstEventType, self.OnCreate) def OnCreate(self, evt): self.Unbind(self._firstEventType) self._PostInit() __i = 0 ## CHANGELOG: ## ==================== ## Version 1.4 ## 1. Added handler for EVT_COMBOBOX to address apparently inconsistent behavior ## of control when the dropdown control is used to do a selection. ## NOTE: due to misbehavior of wx.ComboBox re: losing all concept of the ## current selection index if SetInsertionPoint() is called, which is required ## to support masked .SetValue(), this control is flaky about retaining selection ## information. I can't truly fix this without major changes to the base control, ## but I've tried to compensate as best I can. ## TODO: investigate replacing base control with ComboCtrl instead... ## 2. Fixed navigation in readonly masked combobox, which was not working because ## the base control doesn't do navigation if style=CB_READONLY|WANTS_CHARS. ## ## ## Version 1.3 ## 1. Made definition of "hack" GetMark conditional on base class not ## implementing it properly, to allow for migration in wx code base ## while taking advantage of improvements therein for some platforms. ## ## Version 1.2 ## 1. Converted docstrings to reST format, added doc for ePyDoc. ## 2. Renamed helper functions, vars etc. not intended to be visible in public ## interface to code. ## ## Version 1.1 ## 1. Added .SetFont() method that properly resizes control ## 2. Modified control to support construction via XRC mechanism. ## 3. Added AppendItems() to conform with latest combobox.