# 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 <agriggio@users.sourceforge.net>
# 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), label=_("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), label=_("selection"))
# 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')
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