def init(self, ui, parent, style): self.is_modal = style == MODAL window_style = 0 view = ui.view if view.resizable: window_style |= wx.RESIZE_BORDER title = view.title if title == "": title = DefaultTitle history = ui.history window = ui.control if window is not None: if history is not None: history.on_trait_change(self._on_undoable, "undoable", remove=True) history.on_trait_change(self._on_redoable, "redoable", remove=True) history.on_trait_change(self._on_revertable, "undoable", remove=True) window.SetSizer(None) ui.reset() else: self.ui = ui if style == MODAL: if view.resizable: window_style |= wx.MAXIMIZE_BOX | wx.MINIMIZE_BOX window = wx.Dialog( parent, -1, title, style=window_style | wx.DEFAULT_DIALOG_STYLE, ) elif style == NONMODAL: if parent is not None: window_style |= (wx.FRAME_FLOAT_ON_PARENT | wx.FRAME_NO_TASKBAR) window = wx.Frame( parent, -1, title, style=window_style | (wx.DEFAULT_FRAME_STYLE & (~wx.RESIZE_BORDER)), ) else: if window_style == 0: window_style = wx.SIMPLE_BORDER if parent is not None: window_style |= (wx.FRAME_FLOAT_ON_PARENT | wx.FRAME_NO_TASKBAR) if isinstance(parent, tuple): window = wx.Frame(None, -1, "", style=window_style) window._control_region = parent else: window = wx.Frame(parent, -1, "", style=window_style) window._kind = ui.view.kind self._monitor = MouseMonitor(ui) # Set the correct default window background color: window.SetBackgroundColour(WindowColor) self.control = window wx.EVT_CLOSE(window, self._on_close_page) wx.EVT_CHAR(window, self._on_key) self.set_icon(view.icon) buttons = [self.coerce_button(button) for button in view.buttons] nbuttons = len(buttons) no_buttons = (nbuttons == 1) and self.is_button(buttons[0], "") has_buttons = (not no_buttons) and ((nbuttons > 0) or view.undo or view.revert or view.ok or view.cancel) if has_buttons or (view.menubar is not None): if history is None: history = UndoHistory() else: history = None ui.history = history # Create the actual trait sheet panel and imbed it in a scrollable # window (if requested): sw_sizer = wx.BoxSizer(wx.VERTICAL) if ui.scrollable: sizer = wx.BoxSizer(wx.VERTICAL) sw = TraitsUIScrolledPanel(window) trait_sheet = panel(ui, sw) sizer.Add(trait_sheet, 1, wx.EXPAND) tsdx, tsdy = trait_sheet.GetSize() sw.SetScrollRate(16, 16) max_dy = (2 * screen_dy) / 3 sw.SetSizer(sizer) sw.SetSize( wx.Size(tsdx + ((tsdy > max_dy) * scrollbar_dx), min(tsdy, max_dy))) else: sw = panel(ui, window) sw_sizer.Add(sw, 1, wx.EXPAND) sw_sizer.SetMinSize(sw.GetSize()) # Check to see if we need to add any of the special function buttons: if (not no_buttons) and (has_buttons or view.help): sw_sizer.Add(wx.StaticLine(window, -1), 0, wx.EXPAND) b_sizer = wx.BoxSizer(wx.HORIZONTAL) # Convert all button flags to actual button actions if no buttons # were specified in the 'buttons' trait: if nbuttons == 0: if view.undo: self.check_button(buttons, UndoButton) if view.revert: self.check_button(buttons, RevertButton) if view.ok: self.check_button(buttons, OKButton) if view.cancel: self.check_button(buttons, CancelButton) if view.help: self.check_button(buttons, HelpButton) # Create a button for each button action: for raw_button, button in zip(view.buttons, buttons): button = self.coerce_button(button) default = raw_button == view.default_button if self.is_button(button, "Undo"): self.undo = self.add_button(button, b_sizer, self._on_undo, False, default=default) self.redo = self.add_button(button, b_sizer, self._on_redo, False, "Redo") history.on_trait_change(self._on_undoable, "undoable", dispatch="ui") history.on_trait_change(self._on_redoable, "redoable", dispatch="ui") if history.can_undo: self._on_undoable(True) if history.can_redo: self._on_redoable(True) elif self.is_button(button, "Revert"): self.revert = self.add_button( button, b_sizer, self._on_revert, False, default=default, ) history.on_trait_change(self._on_revertable, "undoable", dispatch="ui") if history.can_undo: self._on_revertable(True) elif self.is_button(button, "OK"): self.ok = self.add_button(button, b_sizer, self._on_ok, default=default) ui.on_trait_change(self._on_error, "errors", dispatch="ui") elif self.is_button(button, "Cancel"): self.add_button(button, b_sizer, self._on_cancel, default=default) elif self.is_button(button, "Help"): self.add_button(button, b_sizer, self._on_help, default=default) elif not self.is_button(button, ""): self.add_button(button, b_sizer, default=default) sw_sizer.Add(b_sizer, 0, wx.ALIGN_RIGHT | wx.ALL, 5) # Add the menu bar, tool bar and status bar (if any): self.add_menubar() self.add_toolbar() self.add_statusbar() # Lay all of the dialog contents out: window.SetSizer(sw_sizer) window.Fit()
def __init__(self, ui, parent, allow_buttons): """ Initializes the object. """ self.ui = ui history = None view = ui.view title = view.title # Reset any existing history listeners: history = ui.history if history is not None: history.on_trait_change(self._on_undoable, "undoable", remove=True) history.on_trait_change(self._on_redoable, "redoable", remove=True) history.on_trait_change( self._on_revertable, "undoable", remove=True ) # Determine if we need any buttons or an 'undo' history: buttons = [self.coerce_button(button) for button in view.buttons] nbuttons = len(buttons) if nbuttons == 0: if view.undo: self.check_button(buttons, UndoButton) if view.revert: self.check_button(buttons, RevertButton) if view.help: self.check_button(buttons, HelpButton) if allow_buttons and (history is None): for button in buttons: if self.is_button(button, "Undo") or self.is_button( button, "Revert" ): history = UndoHistory() break ui.history = history # Create a container panel to put everything in: cpanel = getattr(self, "control", None) if cpanel is not None: cpanel.SetSizer(None) cpanel.DestroyChildren() else: self.control = cpanel = TraitsUIPanel(parent, -1) # Create the actual trait sheet panel and embed it in a scrollable # window (if requested): sw_sizer = wx.BoxSizer(wx.VERTICAL) if ui.scrollable: sizer = wx.BoxSizer(wx.VERTICAL) sw = TraitsUIScrolledPanel(cpanel) sizer.Add(panel(ui, sw), 1, wx.EXPAND) sw.SetSizerAndFit(sizer) sw.SetScrollRate(16, 16) else: sw = panel(ui, cpanel) if (title != "") and ( not isinstance(getattr(parent, "owner", None), DockWindow) ): sw_sizer.Add( heading_text(cpanel, text=title).control, 0, wx.EXPAND ) self.add_toolbar(sw_sizer) sw_sizer.Add(sw, 1, wx.EXPAND) if allow_buttons and ( (nbuttons != 1) or (not self.is_button(buttons[0], "")) ): # Add the special function buttons: sw_sizer.Add(wx.StaticLine(cpanel, -1), 0, wx.EXPAND) b_sizer = wx.BoxSizer(wx.HORIZONTAL) for button in buttons: if self.is_button(button, "Undo"): self.undo = self.add_button( button, b_sizer, self._on_undo, False ) self.redo = self.add_button( button, b_sizer, self._on_redo, False, "Redo" ) history.on_trait_change( self._on_undoable, "undoable", dispatch="ui" ) history.on_trait_change( self._on_redoable, "redoable", dispatch="ui" ) elif self.is_button(button, "Revert"): self.revert = self.add_button( button, b_sizer, self._on_revert, False ) history.on_trait_change( self._on_revertable, "undoable", dispatch="ui" ) elif self.is_button(button, "Help"): self.add_button(button, b_sizer, self._on_help) elif not self.is_button(button, ""): self.add_button(button, b_sizer) sw_sizer.Add(b_sizer, 0, wx.ALIGN_RIGHT | wx.ALL, 5) cpanel.SetSizerAndFit(sw_sizer)
def init(self, ui, parent, style): """Initialise the object. FIXME: Note that we treat MODAL and POPUP as equivalent until we have an example that demonstrates how POPUP is supposed to work. """ self.ui = ui self.control = ui.control view = ui.view history = ui.history if self.control is not None: if history is not None: history.on_trait_change(self._on_undoable, 'undoable', remove=True) history.on_trait_change(self._on_redoable, 'redoable', remove=True) history.on_trait_change(self._on_revertable, 'undoable', remove=True) ui.reset() else: self.create_dialog(parent, style) self.set_icon(view.icon) # Convert the buttons to actions. buttons = [self.coerce_button(button) for button in view.buttons] nr_buttons = len(buttons) no_buttons = ((nr_buttons == 1) and self.is_button(buttons[0], '')) has_buttons = ( (not no_buttons) and ( (nr_buttons > 0) or view.undo or view.revert or view.ok or view.cancel)) if has_buttons or (view.menubar is not None): if history is None: history = UndoHistory() else: history = None ui.history = history if (not no_buttons) and (has_buttons or view.help): bbox = QtGui.QDialogButtonBox() # Create the necessary special function buttons. if nr_buttons == 0: if view.undo: self.check_button(buttons, UndoButton) if view.revert: self.check_button(buttons, RevertButton) if view.ok: self.check_button(buttons, OKButton) if view.cancel: self.check_button(buttons, CancelButton) if view.help: self.check_button(buttons, HelpButton) for raw_button, button in zip(view.buttons, buttons): default = raw_button == view.default_button if self.is_button(button, 'Undo'): self.undo = self.add_button( button, bbox, QtGui.QDialogButtonBox.ActionRole, self._on_undo, False, default=default) history.on_trait_change(self._on_undoable, 'undoable', dispatch='ui') if history.can_undo: self._on_undoable(True) self.redo = self.add_button( button, bbox, QtGui.QDialogButtonBox.ActionRole, self._on_redo, False, 'Redo') history.on_trait_change(self._on_redoable, 'redoable', dispatch='ui') if history.can_redo: self._on_redoable(True) elif self.is_button(button, 'Revert'): self.revert = self.add_button( button, bbox, QtGui.QDialogButtonBox.ResetRole, self._on_revert, False, default=default) history.on_trait_change(self._on_revertable, 'undoable', dispatch='ui') if history.can_undo: self._on_revertable(True) elif self.is_button(button, 'OK'): self.ok = self.add_button( button, bbox, QtGui.QDialogButtonBox.AcceptRole, self.control.accept, default=default) ui.on_trait_change(self._on_error, 'errors', dispatch='ui') elif self.is_button(button, 'Cancel'): self.add_button(button, bbox, QtGui.QDialogButtonBox.RejectRole, self.control.reject, default=default) elif self.is_button(button, 'Help'): self.add_button( button, bbox, QtGui.QDialogButtonBox.HelpRole, self._on_help, default=default) elif not self.is_button(button, ''): self.add_button( button, bbox, QtGui.QDialogButtonBox.ActionRole, default=default) else: bbox = None self.add_contents(panel(ui), bbox)
def init(self, ui, parent, style): self.is_modal = (style == MODAL) window_style = 0 view = ui.view if view.resizable: window_style |= wx.RESIZE_BORDER title = view.title if title == '': title = DefaultTitle history = ui.history window = ui.control if window is not None: if history is not None: history.on_trait_change(self._on_undoable, 'undoable', remove=True) history.on_trait_change(self._on_redoable, 'redoable', remove=True) history.on_trait_change(self._on_revertable, 'undoable', remove=True) window.SetSizer(None) ui.reset() else: self.ui = ui if style == MODAL: if view.resizable: window_style |= (wx.MAXIMIZE_BOX | wx.MINIMIZE_BOX) window = wx.Dialog( parent, -1, title, style=window_style | wx.DEFAULT_DIALOG_STYLE) elif style == NONMODAL: if parent is not None: window_style |= (wx.FRAME_FLOAT_ON_PARENT | wx.FRAME_NO_TASKBAR) window = wx.Frame(parent, -1, title, style=window_style | (wx.DEFAULT_FRAME_STYLE & (~wx.RESIZE_BORDER))) else: if window_style == 0: window_style = wx.SIMPLE_BORDER if parent is not None: window_style |= (wx.FRAME_FLOAT_ON_PARENT | wx.FRAME_NO_TASKBAR) window = wx.Frame(parent, -1, '', style=window_style) window._kind = ui.view.kind self._monitor = MouseMonitor(ui) # Set the correct default window background color: window.SetBackgroundColour(WindowColor) self.control = window wx.EVT_CLOSE(window, self._on_close_page) wx.EVT_CHAR(window, self._on_key) self.set_icon(view.icon) buttons = [self.coerce_button(button) for button in view.buttons] nbuttons = len(buttons) no_buttons = ((nbuttons == 1) and self.is_button(buttons[0], '')) has_buttons = ( (not no_buttons) and ( (nbuttons > 0) or view.undo or view.revert or view.ok or view.cancel)) if has_buttons or (view.menubar is not None): if history is None: history = UndoHistory() else: history = None ui.history = history # Create the actual trait sheet panel and imbed it in a scrollable # window (if requested): sw_sizer = wx.BoxSizer(wx.VERTICAL) if ui.scrollable: sizer = wx.BoxSizer(wx.VERTICAL) sw = TraitsUIScrolledPanel(window) trait_sheet = panel(ui, sw) sizer.Add(trait_sheet, 1, wx.EXPAND) tsdx, tsdy = trait_sheet.GetSize() sw.SetScrollRate(16, 16) max_dy = (2 * screen_dy) / 3 sw.SetSizer(sizer) sw.SetSize(wx.Size(tsdx + ((tsdy > max_dy) * scrollbar_dx), min(tsdy, max_dy))) else: sw = panel(ui, window) sw_sizer.Add(sw, 1, wx.EXPAND) sw_sizer.SetMinSize(sw.GetSize()) # Check to see if we need to add any of the special function buttons: if (not no_buttons) and (has_buttons or view.help): sw_sizer.Add(wx.StaticLine(window, -1), 0, wx.EXPAND) b_sizer = wx.BoxSizer(wx.HORIZONTAL) # Convert all button flags to actual button actions if no buttons # were specified in the 'buttons' trait: if nbuttons == 0: if view.undo: self.check_button(buttons, UndoButton) if view.revert: self.check_button(buttons, RevertButton) if view.ok: self.check_button(buttons, OKButton) if view.cancel: self.check_button(buttons, CancelButton) if view.help: self.check_button(buttons, HelpButton) # Create a button for each button action: for raw_button, button in zip(view.buttons, buttons): button = self.coerce_button(button) default = raw_button == view.default_button if self.is_button(button, 'Undo'): self.undo = self.add_button( button, b_sizer, self._on_undo, False, default=default) self.redo = self.add_button(button, b_sizer, self._on_redo, False, 'Redo') history.on_trait_change(self._on_undoable, 'undoable', dispatch='ui') history.on_trait_change(self._on_redoable, 'redoable', dispatch='ui') if history.can_undo: self._on_undoable(True) if history.can_redo: self._on_redoable(True) elif self.is_button(button, 'Revert'): self.revert = self.add_button( button, b_sizer, self._on_revert, False, default=default) history.on_trait_change(self._on_revertable, 'undoable', dispatch='ui') if history.can_undo: self._on_revertable(True) elif self.is_button(button, 'OK'): self.ok = self.add_button(button, b_sizer, self._on_ok, default=default) ui.on_trait_change(self._on_error, 'errors', dispatch='ui') elif self.is_button(button, 'Cancel'): self.add_button(button, b_sizer, self._on_cancel, default=default) elif self.is_button(button, 'Help'): self.add_button(button, b_sizer, self._on_help, default=default) elif not self.is_button(button, ''): self.add_button(button, b_sizer, default=default) sw_sizer.Add(b_sizer, 0, wx.ALIGN_RIGHT | wx.ALL, 5) # Add the menu bar, tool bar and status bar (if any): self.add_menubar() self.add_toolbar() self.add_statusbar() # Lay all of the dialog contents out: window.SetSizer(sw_sizer) window.Fit()
def init(self, ui, parent, style): """Initialise the object. FIXME: Note that we treat MODAL and POPUP as equivalent until we have an example that demonstrates how POPUP is supposed to work. """ self.ui = ui self.control = ui.control view = ui.view history = ui.history if self.control is not None: if history is not None: history.on_trait_change( self._on_undoable, "undoable", remove=True ) history.on_trait_change( self._on_redoable, "redoable", remove=True ) history.on_trait_change( self._on_revertable, "undoable", remove=True ) ui.reset() else: self.create_dialog(parent, style) self.set_icon(view.icon) # Convert the buttons to actions. buttons = [self.coerce_button(button) for button in view.buttons] nr_buttons = len(buttons) no_buttons = (nr_buttons == 1) and self.is_button(buttons[0], "") has_buttons = (not no_buttons) and ( (nr_buttons > 0) or view.undo or view.revert or view.ok or view.cancel ) if has_buttons or (view.menubar is not None): if history is None: history = UndoHistory() else: history = None ui.history = history if (not no_buttons) and (has_buttons or view.help): bbox = QtGui.QDialogButtonBox() # Create the necessary special function buttons. if nr_buttons == 0: if view.undo: self.check_button(buttons, UndoButton) if view.revert: self.check_button(buttons, RevertButton) if view.ok: self.check_button(buttons, OKButton) if view.cancel: self.check_button(buttons, CancelButton) if view.help: self.check_button(buttons, HelpButton) for raw_button, button in zip(view.buttons, buttons): default = raw_button == view.default_button if self.is_button(button, "Undo"): self.undo = self.add_button( button, bbox, QtGui.QDialogButtonBox.ActionRole, self._on_undo, False, default=default, ) history.on_trait_change( self._on_undoable, "undoable", dispatch="ui" ) if history.can_undo: self._on_undoable(True) self.redo = self.add_button( button, bbox, QtGui.QDialogButtonBox.ActionRole, self._on_redo, False, "Redo", ) history.on_trait_change( self._on_redoable, "redoable", dispatch="ui" ) if history.can_redo: self._on_redoable(True) elif self.is_button(button, "Revert"): self.revert = self.add_button( button, bbox, QtGui.QDialogButtonBox.ResetRole, self._on_revert, False, default=default, ) history.on_trait_change( self._on_revertable, "undoable", dispatch="ui" ) if history.can_undo: self._on_revertable(True) elif self.is_button(button, "OK"): self.ok = self.add_button( button, bbox, QtGui.QDialogButtonBox.AcceptRole, self.control.accept, default=default, ) ui.on_trait_change(self._on_error, "errors", dispatch="ui") elif self.is_button(button, "Cancel"): self.add_button( button, bbox, QtGui.QDialogButtonBox.RejectRole, self.control.reject, default=default, ) elif self.is_button(button, "Help"): self.add_button( button, bbox, QtGui.QDialogButtonBox.HelpRole, self._on_help, default=default, ) elif not self.is_button(button, ""): self.add_button( button, bbox, QtGui.QDialogButtonBox.ActionRole, default=default, ) else: bbox = None self.add_contents(panel(ui), bbox)
def __init__(self, ui, parent, allow_buttons): """ Initializes the object. """ self.ui = ui history = None view = ui.view title = view.title # Reset any existing history listeners: history = ui.history if history is not None: history.on_trait_change(self._on_undoable, 'undoable', remove=True) history.on_trait_change(self._on_redoable, 'redoable', remove=True) history.on_trait_change(self._on_revertable, 'undoable', remove=True) # Determine if we need any buttons or an 'undo' history: buttons = [self.coerce_button(button) for button in view.buttons] nbuttons = len(buttons) if nbuttons == 0: if view.undo: self.check_button(buttons, UndoButton) if view.revert: self.check_button(buttons, RevertButton) if view.help: self.check_button(buttons, HelpButton) if allow_buttons and (history is None): for button in buttons: if (self.is_button(button, 'Undo') or self.is_button(button, 'Revert')): history = UndoHistory() break ui.history = history # Create a container panel to put everything in: cpanel = getattr(self, 'control', None) if cpanel is not None: cpanel.SetSizer(None) cpanel.DestroyChildren() else: self.control = cpanel = TraitsUIPanel(parent, -1) # Create the actual trait sheet panel and embed it in a scrollable # window (if requested): sw_sizer = wx.BoxSizer(wx.VERTICAL) if ui.scrollable: sizer = wx.BoxSizer(wx.VERTICAL) sw = TraitsUIScrolledPanel(cpanel) sizer.Add(panel(ui, sw), 1, wx.EXPAND) sw.SetSizerAndFit(sizer) sw.SetScrollRate(16, 16) else: sw = panel(ui, cpanel) if ((title != '') and (not isinstance(getattr(parent, 'owner', None), DockWindow))): sw_sizer.Add(heading_text(cpanel, text=title).control, 0, wx.EXPAND) self.add_toolbar(sw_sizer) sw_sizer.Add(sw, 1, wx.EXPAND) if (allow_buttons and ((nbuttons != 1) or (not self.is_button(buttons[0], '')))): # Add the special function buttons: sw_sizer.Add(wx.StaticLine(cpanel, -1), 0, wx.EXPAND) b_sizer = wx.BoxSizer(wx.HORIZONTAL) for button in buttons: if self.is_button(button, 'Undo'): self.undo = self.add_button(button, b_sizer, self._on_undo, False) self.redo = self.add_button(button, b_sizer, self._on_redo, False, 'Redo') history.on_trait_change(self._on_undoable, 'undoable', dispatch='ui') history.on_trait_change(self._on_redoable, 'redoable', dispatch='ui') elif self.is_button(button, 'Revert'): self.revert = self.add_button(button, b_sizer, self._on_revert, False) history.on_trait_change(self._on_revertable, 'undoable', dispatch='ui') elif self.is_button(button, 'Help'): self.add_button(button, b_sizer, self._on_help) elif not self.is_button(button, ''): self.add_button(button, b_sizer) sw_sizer.Add(b_sizer, 0, wx.ALIGN_RIGHT | wx.ALL, 5) cpanel.SetSizerAndFit(sw_sizer)
def __init__(self, ui, parent, allow_buttons): """ Initializes the object. """ self.ui = ui history = None view = ui.view title = view.title # Reset any existing history listeners: history = ui.history if history is not None: history.on_trait_change(self._on_undoable, "undoable", remove=True) history.on_trait_change(self._on_redoable, "redoable", remove=True) history.on_trait_change(self._on_revertable, "undoable", remove=True) # Determine if we need any buttons or an 'undo' history: buttons = [self.coerce_button(button) for button in view.buttons] nbuttons = len(buttons) if nbuttons == 0: if view.undo: self.check_button(buttons, UndoButton) if view.revert: self.check_button(buttons, RevertButton) if view.help: self.check_button(buttons, HelpButton) if allow_buttons and (history is None): for button in buttons: if self.is_button(button, "Undo") or self.is_button(button, "Revert"): history = UndoHistory() break ui.history = history # Create a container panel to put everything in: cpanel = getattr(self, "control", None) if cpanel is not None: cpanel.SetSizer(None) cpanel.DestroyChildren() else: if is_mac: # Groups with borders have a two-tone background, and the # getter is picking the wrong color. Set to transparent # and hope that the parent has been painted. bg_color = wx.Colour(224, 224, 224, 0) self.control = cpanel = TraitsUIPanel(parent, -1, bg_color=bg_color) else: self.control = cpanel = TraitsUIPanel(parent, -1) # Create the actual trait sheet panel and embed it in a scrollable # window (if requested): sw_sizer = wx.BoxSizer(wx.VERTICAL) if ui.scrollable: sizer = wx.BoxSizer(wx.VERTICAL) sw = TraitsUIScrolledPanel(cpanel) sizer.Add(panel(ui, sw), 1, wx.EXPAND) sw.SetSizerAndFit(sizer) sw.SetScrollRate(16, 16) else: sw = panel(ui, cpanel) if (title != "") and (not isinstance(getattr(parent, "owner", None), DockWindow)): sw_sizer.Add(heading_text(cpanel, text=title).control, 0, wx.EXPAND) self.add_toolbar(sw_sizer) sw_sizer.Add(sw, 1, wx.EXPAND) if allow_buttons and ((nbuttons != 1) or (not self.is_button(buttons[0], ""))): # Add the special function buttons: sw_sizer.Add(wx.StaticLine(cpanel, -1), 0, wx.EXPAND) b_sizer = wx.BoxSizer(wx.HORIZONTAL) for button in buttons: if self.is_button(button, "Undo"): self.undo = self.add_button(button, b_sizer, self._on_undo, False) self.redo = self.add_button(button, b_sizer, self._on_redo, False, "Redo") history.on_trait_change(self._on_undoable, "undoable", dispatch="ui") history.on_trait_change(self._on_redoable, "redoable", dispatch="ui") elif self.is_button(button, "Revert"): self.revert = self.add_button(button, b_sizer, self._on_revert, False) history.on_trait_change(self._on_revertable, "undoable", dispatch="ui") elif self.is_button(button, "Help"): self.add_button(button, b_sizer, self._on_help) elif not self.is_button(button, ""): self.add_button(button, b_sizer) sw_sizer.Add(b_sizer, 0, wx.ALIGN_RIGHT | wx.ALL, 5) cpanel.SetSizerAndFit(sw_sizer)