bin/widget/view/form_gtk/selection.py

   1 # -*- encoding: utf-8 -*-
   2 ##############################################################################
   3 #
   4 # Copyright (c) 2004-2008 TINY SPRL. (http://tiny.be) All Rights Reserved.
   5 #
   6 # $Id$
   7 #
   8 # WARNING: This program as such is intended to be used by professional
   9 # programmers who take the whole responsability of assessing all potential
  10 # consequences resulting from its eventual inadequacies and bugs
  11 # End users who are looking for a ready-to-use solution with commercial
  12 # garantees and support are strongly adviced to contract a Free Software
  13 # Service Company
  14 #
  15 # This program is Free Software; you can redistribute it and/or
  16 # modify it under the terms of the GNU General Public License
  17 # as published by the Free Software Foundation; either version 2
  18 # of the License, or (at your option) any later version.
  19 #
  20 # This program is distributed in the hope that it will be useful,
  21 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  22 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23 # GNU General Public License for more details.
  24 #
  25 # You should have received a copy of the GNU General Public License
  26 # along with this program; if not, write to the Free Software
  27 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  28 #
  29 ##############################################################################
  30
  31 import common
  32 import interface
  33 import gtk
  34 import gobject
  35
  36 import gettext
  37
  38
  39 class selection(interface.widget_interface):
  40     def __init__(self, window, parent, model, attrs={}):
  41         interface.widget_interface.__init__(self, window, parent, model, attrs)
  42
  43         self.widget = gtk.HBox(spacing=3)
  44         self.entry = gtk.ComboBoxEntry()
  45         self.entry.child.set_property('activates_default', True)
  46         self.entry.child.connect('changed', self.sig_changed)
  47         self.entry.child.connect('button_press_event', self._menu_open)
  48         self.entry.child.connect('key_press_event', self.sig_key_press)
  49         self.entry.child.connect('activate', self.sig_activate)
  50         self.entry.child.connect_after('focus-out-event', self.sig_activate)
  51         self.entry.set_size_request(int(attrs.get('size', -1)), -1)
  52         self.widget.pack_start(self.entry, expand=True, fill=True)
  53
  54         # the dropdown button is not focusable by a tab
  55         self.widget.set_focus_chain([self.entry.child])
  56
  57         self.ok = True
  58         self._selection={}
  59         self.set_popdown(attrs.get('selection',[]))
  60         self.last_key = (None, 0)
  61
  62     def set_popdown(self, selection):
  63         self.model = gtk.ListStore(gobject.TYPE_STRING)
  64         self._selection={}
  65         lst = []
  66         for (value, name) in selection:
  67             name = str(name)
  68             lst.append(name)
  69             self._selection[name] = value
  70             i = self.model.append()
  71             self.model.set(i, 0, name)
  72         self.entry.set_model(self.model)
  73         self.entry.set_text_column(0)
  74         return lst
  75
  76     def _readonly_set(self, value):
  77         interface.widget_interface._readonly_set(self, value)
  78         self.entry.set_sensitive(not value)
  79
  80     def value_get(self):
  81         res = self.entry.child.get_text()
  82         return self._selection.get(res, False)
  83
  84     def sig_key_press(self, widget, event):
  85         # allow showing available entries by hitting "ctrl+space"
  86         completion=gtk.EntryCompletion()
  87         completion.set_inline_selection(True)
  88         if (event.type == gtk.gdk.KEY_PRESS) \
  89             and ((event.state & gtk.gdk.CONTROL_MASK) != 0) \
  90             and (event.keyval == gtk.keysyms.space):
  91             self.entry.popup()
  92         elif not (event.keyval == gtk.keysyms.Up or event.keyval == gtk.keysyms.Down):
  93             completion.set_model(self.model)
  94             widget.set_completion(completion)
  95             completion.set_text_column(0)
  96
  97     def sig_activate(self, *args):
  98         text = self.entry.child.get_text()
  99         value = False
 100         if text:
 101             for txt, val in self._selection.items():
 102                 if not val:
 103                     continue
 104                 if txt[:len(text)].lower() == text.lower():
 105                     value = val
 106                     if len(txt) == len(text):
 107                         break
 108         self._view.modelfield.set_client(self._view.model, value, force_change=True)
 109         self.display(self._view.model, self._view.modelfield)
 110
 111
 112     def set_value(self, model, model_field):
 113         model_field.set_client(model, self.value_get())
 114
 115     def _menu_sig_default_set(self):
 116         self.set_value(self._view.model, self._view.modelfield)
 117         super(selection, self)._menu_sig_default_set()
 118
 119     def display(self, model, model_field):
 120         self.ok = False
 121         if not model_field:
 122             self.entry.child.set_text('')
 123             self.ok = True
 124             return False
 125         super(selection, self).display(model, model_field)
 126         value = model_field.get(model)
 127         if not value:
 128             self.entry.child.set_text('')
 129         else:
 130             found = False
 131             for long_text, sel_value in self._selection.items():
 132                 if sel_value == value:
 133                     self.entry.child.set_text(long_text)
 134                     found = True
 135                     break
 136         self.ok = True
 137
 138     def sig_changed(self, *args):
 139         if self.ok:
 140             self._focus_out()
 141
 142     def _color_widget(self):
 143         return self.entry.child
 144
 145 # vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:
 146