# combo_box.py: wxComboBox objects # $Id: combo_box.py,v 1.28 2007/03/27 07:02:02 agriggio Exp $ # # Copyright (c) 2002-2007 Alberto Griggio # License: MIT (see license.txt) # THIS PROGRAM COMES WITH NO WARRANTY import wx import common, misc from edit_windows import ManagedBase from tree import Tree from widget_properties import * from ChoicesProperty import * if wx.Platform == '__WXMSW__': # why on Windows combo boxes give segfaults? Need to investigate, but # for now replace them with choices # this seems to be because of the style of wxPanel: if there's a # wxTAB_TRAVERSAL, we have troubles -- now it should be fixed... class wxComboBox2(wx.ComboBox): # on windows GetBestSize considers also the drop down menu, while we # don't want it to be included def GetBestSize(self): w, h = wx.ComboBox.GetBestSize(self) n = self.GetCount() return w, h/(n+1) def GetSize(self): return self.GetClientSize() else: wxComboBox2 = wx.ComboBox class EditComboBox(ManagedBase): events = ['EVT_COMBOBOX', 'EVT_TEXT', 'EVT_TEXT_ENTER'] def __init__(self, name, parent, id, choices, sizer, pos, property_window, show=True): """\ Class to handle wxComboBox objects """ import config ManagedBase.__init__(self, name, 'wxComboBox', parent, id, sizer, pos, property_window, show=show) self.choices = choices if len(choices): self.selection = 0 else: self.selection = -1 self.style = 0 # properties self.access_functions['choices'] = (self.get_choices, self.set_choices) self.access_functions['style'] = (self.get_style, self.set_style) style_labels = ('#section#Style', 'wxCB_SIMPLE','wxCB_DROPDOWN', 'wxCB_READONLY', 'wxCB_SORT') self.style_pos = [ eval('wx.' + s[2:]) for s in style_labels[1:] ] self.tooltips = ("Creates a combobox with a permanently displayed list." " Windows only.", "Creates a combobox with a drop-down list.", "Same as wxCB_DROPDOWN but only the strings specified " "as the combobox choices can be selected, it is " "impossible to select (even from a program) a string " "which is not in the choices list.", "Sorts the entries in the list alphabetically.") self.properties['style'] = CheckListProperty(self, 'style', None, style_labels, tooltips=self.tooltips) self.properties['choices'] = ChoicesProperty(self, 'choices', None, [('Label', GridProperty.STRING)], len(choices)) self.access_functions['selection'] = (self.get_selection, self.set_selection) self.choices = list(choices) self.properties['selection'] = SpinProperty(self, 'selection', None, r=(0, len(choices)-1)) # 2003-09-04 added default_border if config.preferences.default_border: self.border = config.preferences.default_border_size self.flag = wx.ALL def create_widget(self): self.widget = wxComboBox2(self.parent.widget, self.id, choices=self.choices) self.set_selection(self.selection) wx.EVT_LEFT_DOWN(self.widget, self.on_set_focus) def create_properties(self): ManagedBase.create_properties(self) panel = wx.Panel(self.notebook, -1) szr = wx.BoxSizer(wx.VERTICAL) self.properties['choices'].display(panel) self.properties['style'].display(panel) self.properties['selection'].display(panel) szr.Add(self.properties['style'].panel, 0, wx.EXPAND) szr.Add(self.properties['selection'].panel, 0, wx.EXPAND) szr.Add(self.properties['choices'].panel, 1, wx.EXPAND) panel.SetAutoLayout(True) panel.SetSizer(szr) szr.Fit(panel) self.notebook.AddPage(panel, 'Widget') self.properties['choices'].set_col_sizes([-1]) def get_selection(self): return self.selection def set_selection(self, value): value = int(value) if self.selection != value: self.selection = value if self.widget: self.widget.SetSelection(value) def get_choices(self): return zip(self.choices) def set_choices(self, values): self.choices = [ misc.wxstr(v[0]) for v in values ] self.properties['selection'].set_range(0, len(self.choices)-1) if self.widget: self.widget.Clear() for c in self.choices: self.widget.Append(c) if not self.properties['size'].is_active(): self.sizer.set_item(self.pos, size=self.widget.GetBestSize()) def get_style(self): retval = [0] * len(self.style_pos) try: for i in range(len(self.style_pos)): if self.style & self.style_pos[i]: retval[i] = 1 except AttributeError: pass return retval def set_style(self, value): value = self.properties['style'].prepare_value(value) self.style = 0 for v in range(len(value)): if value[v]: self.style |= self.style_pos[v] ## if self.widget: ## self.SetWindowStyleFlag(style) def create_widget(self): self.widget = wxComboBox2(self.parent.widget, self.id, choices=self.choices) wx.EVT_LEFT_DOWN(self.widget, self.on_set_focus) def get_property_handler(self, prop_name): if prop_name == 'choices': return ChoicesHandler(self) return ManagedBase.get_property_handler(self, prop_name) # end of class EditComboBox def builder(parent, sizer, pos, number=[1]): """\ factory function for EditComboBox objects. """ name = 'combo_box_%d' % number[0] while common.app_tree.has_name(name): number[0] += 1 name = 'combo_box_%d' % number[0] choice = EditComboBox(name, parent, wx.NewId(), #[misc._encode('choice 1')], [], sizer, pos, common.property_panel) node = Tree.Node(choice) # sizer.set_item(pos, size=choice.GetBestSize()) choice.node = node choice.show_widget(True) common.app_tree.insert(node, sizer.node, pos-1) def xml_builder(attrs, parent, sizer, sizeritem, pos=None): """\ factory to build EditComboBox objects from an xml file """ from xml_parse import XmlParsingError try: name = attrs['name'] except KeyError: raise XmlParsingError, "'name' attribute missing" if sizer is None or sizeritem is None: raise XmlParsingError, "sizer or sizeritem object cannot be None" choice = EditComboBox(name, parent, wx.NewId(), [], sizer, pos, common.property_panel) sizer.set_item(choice.pos, option=sizeritem.option, flag=sizeritem.flag, border=sizeritem.border) ## size=choice.GetBestSize()) node = Tree.Node(choice) choice.node = node if pos is None: common.app_tree.add(node, sizer.node) else: common.app_tree.insert(node, sizer.node, pos-1) return choice def initialize(): """\ initialization function for the module: returns a wxBitmapButton to be added to the main palette. """ common.widgets['EditComboBox'] = builder common.widgets_from_xml['EditComboBox'] = xml_builder return common.make_object_button('EditComboBox', 'icons/combo_box.xpm')