git.maemo.org Git - gonvert/blob - src/gonvert_glade.py

   1 #!/usr/bin/env python
   2 # -*- coding: UTF8 -*-
   3
   4 import os
   5 import pickle
   6 import gettext
   7 import logging
   8
   9 import gobject
  10 import gtk
  11 import gtk.glade
  12 import gtk.gdk
  13
  14 import constants
  15 import unit_data
  16
  17
  18 _moduleLogger = logging.getLogger("gonvert_glade")
  19 PROFILE_STARTUP = False
  20
  21 gettext.bindtextdomain('gonvert', '/usr/share/locale')
  22 gettext.textdomain('gonvert')
  23 _ = gettext.gettext
  24
  25
  26 def change_menu_label(widgets, labelname, newtext):
  27         item_label = widgets.get_widget(labelname).get_children()[0]
  28         item_label.set_text(newtext)
  29
  30
  31 class Gonvert(object):
  32
  33         _glade_files = [
  34                 os.path.join(os.path.dirname(__file__), "gonvert.glade"),
  35                 os.path.join(os.path.dirname(__file__), "../data/gonvert.glade"),
  36                 os.path.join(os.path.dirname(__file__), "../lib/gonvert.glade"),
  37                 '/usr/lib/gonvert/gonvert.glade',
  38         ]
  39
  40         def __init__(self):
  41                 self._unitDataInCategory = None
  42                 self._unit_sort_direction = False
  43                 self._value_sort_direction = False
  44                 self._units_sort_direction = False
  45                 self._isFullScreen = False
  46
  47                 self._find_result = [] # empty find result list
  48                 self._findIndex = 0 # default to find result number zero
  49
  50                 self._selectedCategoryName = '' # preset to no selected category
  51                 self._defaultUnitForCategory = {} # empty dictionary for later use
  52
  53                 #check to see if glade file is in current directory (user must be
  54                 # running from download untar directory)
  55                 for gladePath in self._glade_files:
  56                         if os.path.isfile(gladePath):
  57                                 homepath = os.path.dirname(gladePath)
  58                                 pixmapspath = "/".join((homepath, "pixmaps"))
  59                                 widgets = gtk.glade.XML(gladePath)
  60                                 break
  61                 else:
  62                         _moduleLogger.error("UI Descriptor not found!")
  63                         gtk.main_quit()
  64                         return
  65
  66                 self._mainWindow = widgets.get_widget('mainWindow')
  67
  68                 change_menu_label(widgets, 'fileMenuItem', _('File'))
  69                 change_menu_label(widgets, 'exitMenuItem', _('Exit'))
  70                 change_menu_label(widgets, 'toolsMenuItem', _('Tools'))
  71                 change_menu_label(widgets, 'clearSelectionMenuItem', _('Clear selections'))
  72                 change_menu_label(widgets, 'helpMenuItem', _('Help'))
  73                 change_menu_label(widgets, 'aboutMenuItem', _('About'))
  74                 change_menu_label(widgets, 'findButton', _('Find'))
  75
  76                 self._shortlistcheck = widgets.get_widget('shortlistcheck')
  77                 self._toggleShortList = widgets.get_widget('toggleShortList')
  78
  79                 self._categoryView = widgets.get_widget('categoryView')
  80
  81                 self._unitsView = widgets.get_widget('unitsView')
  82                 self._unitsView.set_property('rules_hint', 1)
  83                 self._unitsView_selection = self._unitsView.get_selection()
  84
  85                 self._unitName = widgets.get_widget('unitName')
  86                 self._unitValue = widgets.get_widget('unitValue')
  87                 self._previousUnitName = widgets.get_widget('previousUnitName')
  88                 self._previousUnitValue = widgets.get_widget('previousUnitValue')
  89
  90                 self._unitSymbol = widgets.get_widget('unitSymbol')
  91                 self._previousUnitSymbol = widgets.get_widget('previousUnitSymbol')
  92
  93                 self._unitDescription = widgets.get_widget('unitDescription')
  94
  95                 self._searchLayout = widgets.get_widget('searchLayout')
  96                 self._searchLayout.hide()
  97                 self._findEntry = widgets.get_widget('findEntry')
  98                 self._findLabel = widgets.get_widget('findLabel')
  99                 self._findButton = widgets.get_widget('findButton')
 100                 ToolTips = gtk.Tooltips()
 101                 ToolTips.set_tip(self._findButton, _(u'Find unit (F6)'))
 102
 103                 #insert a self._categoryColumnumn into the units list even though the heading will not be seen
 104                 renderer = gtk.CellRendererText()
 105                 self._unitNameColumn = gtk.TreeViewColumn(_('Unit Name'), renderer)
 106                 self._unitNameColumn.set_property('resizable', 1)
 107                 self._unitNameColumn.add_attribute(renderer, 'text', 0)
 108                 self._unitNameColumn.set_clickable(True)
 109                 self._unitNameColumn.connect("clicked", self._on_click_unit_column)
 110                 self._unitsView.append_column(self._unitNameColumn)
 111
 112                 self._unitValueColumn = gtk.TreeViewColumn(_('Value'), renderer)
 113                 self._unitValueColumn.set_property('resizable', 1)
 114                 self._unitValueColumn.add_attribute(renderer, 'text', 1)
 115                 self._unitValueColumn.set_clickable(True)
 116                 self._unitValueColumn.connect("clicked", self._on_click_unit_column)
 117                 self._unitsView.append_column(self._unitValueColumn)
 118
 119                 self._unitSymbolColumn = gtk.TreeViewColumn(_('Units'), renderer)
 120                 self._unitSymbolColumn.set_property('resizable', 1)
 121                 self._unitSymbolColumn.add_attribute(renderer, 'text', 2)
 122                 self._unitSymbolColumn.set_clickable(True)
 123                 self._unitSymbolColumn.connect("clicked", self._on_click_unit_column)
 124                 self._unitsView.append_column(self._unitSymbolColumn)
 125
 126                 self._unitModel = gtk.ListStore(gobject.TYPE_STRING, gobject.TYPE_STRING, gobject.TYPE_STRING)
 127                 self._sortedUnitModel = gtk.TreeModelSort(self._unitModel)
 128                 columns = self._get_column_sort_stuff()
 129                 for columnIndex, (column, sortDirection, col_cmp) in enumerate(columns):
 130                         self._sortedUnitModel.set_sort_func(columnIndex, col_cmp)
 131                 self._unitsView.set_model(self._sortedUnitModel)
 132
 133                 #Insert a column into the category list even though the heading will not be seen
 134                 renderer = gtk.CellRendererText()
 135                 self._categoryColumn = gtk.TreeViewColumn('Title', renderer)
 136                 self._categoryColumn.set_property('resizable', 1)
 137                 self._categoryColumn.add_attribute(renderer, 'text', 0)
 138                 self._categoryView.append_column(self._categoryColumn)
 139
 140                 self._categoryModel = gtk.ListStore(gobject.TYPE_STRING)
 141                 self._categoryView.set_model(self._categoryModel)
 142                 #colourize each row differently for easier reading
 143                 self._categoryView.set_property('rules_hint', 1)
 144
 145                 #Populate the catagories list
 146                 for key in unit_data.UNIT_CATEGORIES:
 147                         iter = self._categoryModel.append()
 148                         self._categoryModel.set(iter, 0, key)
 149
 150                 #--------- connections to GUI ----------------
 151                 dic = {
 152                         "on_exit_menu_activate": self._on_user_exit,
 153                         "on_main_window_destroy": self._on_user_exit,
 154                         "on_categoryView_select_row": self._on_click_category,
 155                         "on_unitValue_changed": self._on_unit_value_changed,
 156                         "on_previousUnitValue_changed": self._on_previous_unit_value_changed,
 157                         "on_findButton_clicked": self._on_find_activate,
 158                         "on_findEntry_activated": self._on_find_activate,
 159                         "on_findEntry_changed": self._on_findEntry_changed,
 160                         "on_aboutMenuItem_activate": self._on_about_clicked,
 161                         "on_clearSelectionMenuItem_activate": self._on_user_clear_selections,
 162                         "on_unitsView_cursor_changed": self._on_click_unit,
 163                         "on_shortlistcheck_toggled": self._on_shortlist_changed,
 164                         "on_toggleShortList_activate": self._on_edit_shortlist,
 165                 }
 166                 widgets.signal_autoconnect(dic)
 167                 self._mainWindow.connect("key-press-event", self._on_key_press)
 168                 self._mainWindow.connect("window-state-event", self._on_window_state_change)
 169
 170                 self._mainWindow.set_title('gonvert- %s - Unit Conversion Utility' % constants.__version__)
 171                 iconPath = pixmapspath + '/gonvert.png'
 172                 if os.path.exists(iconPath):
 173                         self._mainWindow.set_icon(gtk.gdk.pixbuf_new_from_file(iconPath))
 174                 else:
 175                         _moduleLogger.warn("Error: Could not find gonvert icon: %s" % iconPath)
 176
 177                 self._load_settings()
 178
 179         def _load_settings(self):
 180                 #Restore window size from previously saved settings if it exists and is valid.
 181                 windowDatPath = "/".join((constants._data_path_, "window.dat"))
 182                 if os.path.exists(windowDatPath):
 183                         #Retrieving previous window settings from ~/.gonvert/window.dat
 184                         saved_window = pickle.load(open(windowDatPath, "r"))
 185                         #If the 'size' has been stored, then extract size from saved_window.
 186                         if 'size' in saved_window:
 187                                 a, b = saved_window['size']
 188                                 self._mainWindow.resize(a, b)
 189
 190                 #Restore selections from previously saved settings if it exists and is valid.
 191                 historical_catergory_found = False
 192                 selectionsDatPath = "/".join((constants._data_path_, "selections.dat"))
 193                 if os.path.exists(selectionsDatPath):
 194                         #Retrieving previous selections from ~/.gonvert/selections.dat
 195                         selections = pickle.load(open(selectionsDatPath, 'r'))
 196                         #Restoring previous selections.
 197                         #If the 'selected_unts' has been stored, then extract self._defaultUnitForCategory from selections.
 198                         if 'selected_units' in selections:
 199                                 self._defaultUnitForCategory = selections['selected_units']
 200                         #Make sure that the 'self._selectedCategoryName' has been stored.
 201                         if 'selected_category' in selections:
 202                                 #Match an available category to the previously selected category.
 203                                 for counter in range(len(unit_data.UNIT_CATEGORIES)):
 204                                         if selections['selected_category'] == unit_data.UNIT_CATEGORIES[counter]:
 205                                                 # Restore the previously selected category.
 206                                                 self._categoryView.set_cursor(counter, self._categoryColumn, False)
 207                                                 self._categoryView.grab_focus()
 208                                 historical_catergory_found = True
 209
 210                 if not historical_catergory_found:
 211                         print "Couldn't find saved category, using default."
 212                         #If historical records were not kept then default to
 213                         # put the focus on the first category
 214                         self._categoryView.set_cursor(0, self._categoryColumn, False)
 215                         self._categoryView.grab_focus()
 216
 217                 self._select_default_unit()
 218
 219         def _save_settings(self):
 220                 """
 221                 This routine saves the selections to a file, and
 222                 should therefore only be called when exiting the program.
 223
 224                 Update selections dictionary which consists of the following keys:
 225                 'self._selectedCategoryName': full name of selected category
 226                 'self._defaultUnitForCategory': self._defaultUnitForCategory dictionary which contains:
 227                 [categoryname: #1 displayed unit, #2 displayed unit]
 228                 """
 229                 #Determine the contents of the selected category row
 230                 selected, iter = self._categoryView.get_selection().get_selected()
 231                 self._selectedCategoryName = self._categoryModel.get_value(iter, 0)
 232
 233                 selections = {
 234                         'selected_category': self._selectedCategoryName,
 235                         'selected_units': self._defaultUnitForCategory
 236                 }
 237                 selectionsDatPath = "/".join((constants._data_path_, "selections.dat"))
 238                 pickle.dump(selections, open(selectionsDatPath, 'w'))
 239
 240                 #Get last size of app and save it
 241                 window_settings = {
 242                         'size': self._mainWindow.get_size()
 243                 }
 244                 windowDatPath = "/".join((constants._data_path_, "window.dat"))
 245                 pickle.dump(window_settings, open(windowDatPath, 'w'))
 246
 247         def _clear_find(self):
 248                 # switch to "new find" state
 249                 self._find_result = []
 250                 self._findIndex = 0
 251
 252                 # Clear our user message
 253                 self._findLabel.set_text('')
 254
 255         def _find_first(self):
 256                 assert len(self._find_result) == 0
 257                 assert self._findIndex == 0
 258                 findString = self._findEntry.get_text().strip().lower()
 259                 if not findString:
 260                         return
 261
 262                 # Gather info on all the matching units from all categories
 263                 for catIndex, category in enumerate(unit_data.UNIT_CATEGORIES):
 264                         units = unit_data.get_units(category)
 265                         for unitIndex, unit in enumerate(units):
 266                                 loweredUnit = unit.lower()
 267                                 if loweredUnit in findString or findString in loweredUnit:
 268                                         self._find_result.append((category, unit, catIndex, unitIndex))
 269
 270         def _update_find_selection(self):
 271                 assert 0 < len(self._find_result)
 272
 273                 #check if next find is in a new category (prevent category changes when unnecessary
 274                 if self._selectedCategoryName != self._find_result[self._findIndex][0]:
 275                         self._categoryView.set_cursor(
 276                                 self._find_result[self._findIndex][2], self._categoryColumn, False
 277                         )
 278
 279                 self._unitsView.set_cursor(
 280                         self._find_result[self._findIndex][3], self._unitNameColumn, True
 281                 )
 282
 283         def _find_next(self):
 284                 if len(self._find_result) == 0:
 285                         self._find_first()
 286                 else:
 287                         if self._findIndex == len(self._find_result)-1:
 288                                 self._findIndex = 0
 289                         else:
 290                                 self._findIndex += 1
 291
 292                 if not self._find_result:
 293                         self._findLabel.set_text('Text not found')
 294                 else:
 295                         self._update_find_selection()
 296                         resultsLeft = len(self._find_result) - self._findIndex - 1
 297                         self._findLabel.set_text(
 298                                 '%s result(s) left' % (resultsLeft, )
 299                         )
 300
 301         def _find_previous(self):
 302                 if len(self._find_result) == 0:
 303                         self._find_first()
 304                 else:
 305                         if self._findIndex == 0:
 306                                 self._findIndex = len(self._find_result)-1
 307                         else:
 308                                 self._findIndex -= 1
 309
 310                 if not self._find_result:
 311                         self._findLabel.set_text('Text not found')
 312                 else:
 313                         self._update_find_selection()
 314                         resultsLeft = len(self._find_result) - self._findIndex - 1
 315                         self._findLabel.set_text(
 316                                 '%s result(s) left' % (resultsLeft, )
 317                         )
 318
 319         def _toggle_find(self):
 320                 if self._searchLayout.get_property("visible"):
 321                         self._searchLayout.hide()
 322                 else:
 323                         self._searchLayout.show()
 324
 325         def _unit_model_cmp(self, sortedModel, leftItr, rightItr):
 326                 leftUnitText = self._unitModel.get_value(leftItr, 0)
 327                 rightUnitText = self._unitModel.get_value(rightItr, 0)
 328                 return cmp(leftUnitText, rightUnitText)
 329
 330         def _symbol_model_cmp(self, sortedModel, leftItr, rightItr):
 331                 leftSymbolText = self._unitModel.get_value(leftItr, 2)
 332                 rightSymbolText = self._unitModel.get_value(rightItr, 2)
 333                 return cmp(leftSymbolText, rightSymbolText)
 334
 335         def _value_model_cmp(self, sortedModel, leftItr, rightItr):
 336                 #special sorting exceptions for ascii values (instead of float values)
 337                 if self._selectedCategoryName == "Computer Numbers":
 338                         leftValue = self._unitModel.get_value(leftItr, 1)
 339                         rightValue = self._unitModel.get_value(rightItr, 1)
 340                 else:
 341                         leftValueText = self._unitModel.get_value(leftItr, 1)
 342                         leftValue = float(leftValueText) if leftValueText else 0.0
 343
 344                         rightValueText = self._unitModel.get_value(rightItr, 1)
 345                         rightValue = float(rightValueText) if rightValueText else 0.0
 346                 return cmp(leftValue, rightValue)
 347
 348         def _get_column_sort_stuff(self):
 349                 columns = (
 350                         (self._unitNameColumn, "_unit_sort_direction", self._unit_model_cmp),
 351                         (self._unitValueColumn, "_value_sort_direction", self._value_model_cmp),
 352                         (self._unitSymbolColumn, "_units_sort_direction", self._symbol_model_cmp),
 353                 )
 354                 return columns
 355
 356         def _switch_category(self, category):
 357                 self._selectedCategoryName = category
 358                 self._unitDataInCategory = unit_data.UNIT_DESCRIPTIONS[self._selectedCategoryName]
 359
 360                 #Fill up the units descriptions and clear the value cells
 361                 self._clear_visible_unit_data()
 362                 for key in unit_data.get_units(self._selectedCategoryName):
 363                         iter = self._unitModel.append()
 364                         self._unitModel.set(iter, 0, key, 1, '', 2, self._unitDataInCategory[key][1])
 365                 self._sortedUnitModel.sort_column_changed()
 366
 367                 self._select_default_unit()
 368
 369         def _clear_visible_unit_data(self):
 370                 self._unitDescription.get_buffer().set_text("")
 371                 self._unitName.set_text('')
 372                 self._unitValue.set_text('')
 373                 self._unitSymbol.set_text('')
 374
 375                 self._previousUnitName.set_text('')
 376                 self._previousUnitValue.set_text('')
 377                 self._previousUnitSymbol.set_text('')
 378
 379                 self._unitModel.clear()
 380
 381         def _select_default_unit(self):
 382                 # Restore the previous historical settings of previously selected units
 383                 # in this newly selected category
 384                 defaultPrimary = unit_data.get_base_unit(self._selectedCategoryName)
 385                 defaultSecondary = ""
 386                 if self._selectedCategoryName in self._defaultUnitForCategory:
 387                         if self._defaultUnitForCategory[self._selectedCategoryName][0]:
 388                                 defaultPrimary = self._defaultUnitForCategory[self._selectedCategoryName][0]
 389                         if self._defaultUnitForCategory[self._selectedCategoryName][1]:
 390                                 defaultSecondary = self._defaultUnitForCategory[self._selectedCategoryName][1]
 391
 392                 units = unit_data.get_units(self._selectedCategoryName)
 393
 394                 #Restore oldest selection first.
 395                 if defaultPrimary:
 396                         unitIndex = units.index(defaultPrimary)
 397                         self._unitsView.set_cursor(unitIndex, self._unitNameColumn, True)
 398
 399                 #Restore newest selection second.
 400                 if defaultSecondary:
 401                         unitIndex = units.index(defaultSecondary)
 402                         self._unitsView.set_cursor(unitIndex, self._unitNameColumn, True)
 403
 404                 # select the text so user can start typing right away
 405                 self._unitValue.grab_focus()
 406                 self._unitValue.select_region(0, -1)
 407
 408         def _sanitize_value(self, userEntry):
 409                 if self._selectedCategoryName == "Computer Numbers":
 410                         if userEntry == '':
 411                                 value = '0'
 412                         else:
 413                                 value = userEntry
 414                 else:
 415                         if userEntry == '':
 416                                 value = 0.0
 417                         else:
 418                                 value = float(userEntry)
 419                 return value
 420
 421         def _on_shortlist_changed(self, *args):
 422                 try:
 423                         raise NotImplementedError("%s" % self._shortlistcheck.get_active())
 424                 except Exception:
 425                         _moduleLogger.exception("")
 426
 427         def _on_edit_shortlist(self, *args):
 428                 try:
 429                         raise NotImplementedError("%s" % self._toggleShortList.get_active())
 430                 except Exception:
 431                         _moduleLogger.exception("")
 432
 433         def _on_user_clear_selections(self, *args):
 434                 try:
 435                         selectionsDatPath = "/".join((constants._data_path_, "selections.dat"))
 436                         os.remove(selectionsDatPath)
 437                         self._defaultUnitForCategory = {}
 438                 except Exception:
 439                         _moduleLogger.exception("")
 440
 441         def _on_key_press(self, widget, event, *args):
 442                 """
 443                 @note Hildon specific
 444                 """
 445                 RETURN_TYPES = (gtk.keysyms.Return, gtk.keysyms.ISO_Enter, gtk.keysyms.KP_Enter)
 446                 try:
 447                         if (
 448                                 event.keyval == gtk.keysyms.F6 or
 449                                 event.keyval in RETURN_TYPES and event.get_state() & gtk.gdk.CONTROL_MASK
 450                         ):
 451                                 if self._isFullScreen:
 452                                         self._mainWindow.unfullscreen()
 453                                 else:
 454                                         self._mainWindow.fullscreen()
 455                         elif event.keyval == gtk.keysyms.f and event.get_state() & gtk.gdk.CONTROL_MASK:
 456                                 self._toggle_find()
 457                         elif event.keyval == gtk.keysyms.p and event.get_state() & gtk.gdk.CONTROL_MASK:
 458                                 self._find_previous()
 459                         elif event.keyval == gtk.keysyms.n and event.get_state() & gtk.gdk.CONTROL_MASK:
 460                                 self._find_next()
 461                 except Exception, e:
 462                         _moduleLogger.exception("")
 463
 464         def _on_window_state_change(self, widget, event, *args):
 465                 """
 466                 @note Hildon specific
 467                 """
 468                 try:
 469                         if event.new_window_state & gtk.gdk.WINDOW_STATE_FULLSCREEN:
 470                                 self._isFullScreen = True
 471                         else:
 472                                 self._isFullScreen = False
 473                 except Exception, e:
 474                         _moduleLogger.exception("")
 475
 476         def _on_findEntry_changed(self, *args):
 477                 """
 478                 Clear out find results since the user wants to look for something new
 479                 """
 480                 try:
 481                         self._clear_find()
 482                 except Exception:
 483                         _moduleLogger.exception("")
 484
 485         def _on_find_activate(self, *args):
 486                 try:
 487                         self._find_next()
 488                         self._findButton.grab_focus()
 489                 except Exception:
 490                         _moduleLogger.exception("")
 491
 492         def _on_click_unit_column(self, col):
 493                 """
 494                 Sort the contents of the col when the user clicks on the title.
 495                 """
 496                 try:
 497                         #Determine which column requires sorting
 498                         columns = self._get_column_sort_stuff()
 499                         for columnIndex, (maybeCol, directionName, col_cmp) in enumerate(columns):
 500                                 if col is maybeCol:
 501                                         direction = getattr(self, directionName)
 502                                         gtkDirection = gtk.SORT_ASCENDING if direction else gtk.SORT_DESCENDING
 503
 504                                         # cause a sort
 505                                         self._sortedUnitModel.set_sort_column_id(columnIndex, gtkDirection)
 506
 507                                         # set the visual for sorting
 508                                         col.set_sort_indicator(True)
 509                                         col.set_sort_order(not direction)
 510
 511                                         setattr(self, directionName, not direction)
 512                                         break
 513                                 else:
 514                                         maybeCol.set_sort_indicator(False)
 515                         else:
 516                                 assert False, "Unknown column: %s" % (col.get_title(), )
 517                 except Exception:
 518                         _moduleLogger.exception("")
 519
 520         def _on_click_category(self, *args):
 521                 try:
 522                         selected, iter = self._categoryView.get_selection().get_selected()
 523                         if iter is None:
 524                                 # User is typing in an invalid string, not selecting any category
 525                                 return
 526                         selectedCategory = self._categoryModel.get_value(iter, 0)
 527                         self._switch_category(selectedCategory)
 528                 except Exception:
 529                         _moduleLogger.exception("")
 530
 531         def _on_click_unit(self, *args):
 532                 try:
 533                         selected, iter = self._unitsView.get_selection().get_selected()
 534                         selected_unit = selected.get_value(iter, 0)
 535                         unit_spec = self._unitDataInCategory[selected_unit]
 536
 537                         if self._unitName.get_text() != selected_unit:
 538                                 self._previousUnitName.set_text(self._unitName.get_text())
 539                                 self._previousUnitValue.set_text(self._unitValue.get_text())
 540                                 self._previousUnitSymbol.set_text(self._unitSymbol.get())
 541
 542                         self._unitName.set_text(selected_unit)
 543                         self._unitValue.set_text(selected.get_value(iter, 1))
 544                         buffer = self._unitDescription.get_buffer()
 545                         buffer.set_text(unit_spec[2])
 546                         self._unitSymbol.set_text(unit_spec[1]) # put units into label text
 547
 548                         if self._unitValue.get_text() == '':
 549                                 if self._selectedCategoryName == "Computer Numbers":
 550                                         self._unitValue.set_text("0")
 551                                 else:
 552                                         self._unitValue.set_text("0.0")
 553
 554                         self._defaultUnitForCategory[self._selectedCategoryName] = [
 555                                 self._unitName.get_text(), self._previousUnitName.get_text()
 556                         ]
 557
 558                         # select the text so user can start typing right away
 559                         self._unitValue.grab_focus()
 560                         self._unitValue.select_region(0, -1)
 561                 except Exception:
 562                         _moduleLogger.exception("")
 563
 564         def _on_unit_value_changed(self, *args):
 565                 try:
 566                         if self._unitName.get_text() == '':
 567                                 return
 568                         if not self._unitValue.is_focus():
 569                                 return
 570
 571                         #retrieve the conversion function and value from the selected unit
 572                         value = self._sanitize_value(self._unitValue.get_text())
 573                         func, arg = self._unitDataInCategory[self._unitName.get_text()][0]
 574                         base = func.to_base(value, arg)
 575
 576                         #point to the first row
 577                         for row in self._unitModel:
 578                                 func, arg = self._unitDataInCategory[row[0]][0]
 579                                 row[1] = str(func.from_base(base, arg))
 580
 581                         # Update the secondary unit entry
 582                         if self._previousUnitName.get_text() != '':
 583                                 func, arg = self._unitDataInCategory[self._previousUnitName.get_text()][0]
 584                                 self._previousUnitValue.set_text(str(func.from_base(base, arg, )))
 585                 except Exception:
 586                         _moduleLogger.exception("")
 587
 588         def _on_previous_unit_value_changed(self, *args):
 589                 try:
 590                         if self._previousUnitName.get_text() == '':
 591                                 return
 592                         if not self._previousUnitValue.is_focus():
 593                                 return
 594
 595                         #retrieve the conversion function and value from the selected unit
 596                         value = self._sanitize_value(self._previousUnitValue.get_text())
 597                         func, arg = self._unitDataInCategory[self._previousUnitName.get_text()][0]
 598                         base = func.to_base(value, arg)
 599
 600                         #point to the first row
 601                         for row in self._unitModel:
 602                                 func, arg = self._unitDataInCategory[row[0]][0]
 603                                 row[1] = str(func.from_base(base, arg))
 604
 605                         # Update the primary unit entry
 606                         func, arg = self._unitDataInCategory[self._unitName.get_text()][0]
 607                         self._unitValue.set_text(str(func.from_base(base, arg, )))
 608                 except Exception:
 609                         _moduleLogger.exception("")
 610
 611         def _on_about_clicked(self, a):
 612                 dlg = gtk.AboutDialog()
 613                 dlg.set_name(constants.__pretty_app_name__)
 614                 dlg.set_version("%s-%d" % (constants.__version__, constants.__build__))
 615                 dlg.set_copyright("Copyright 2009 - GPL")
 616                 dlg.set_comments("")
 617                 dlg.set_website("http://unihedron.com/projects/gonvert/gonvert.php")
 618                 dlg.set_authors(["Anthony Tekatch <anthony@unihedron.com>", "Ed Page <edpage@byu.net>"])
 619                 dlg.run()
 620                 dlg.destroy()
 621
 622         def _on_user_exit(self, *args):
 623                 try:
 624                         self._save_settings()
 625                 except Exception:
 626                         _moduleLogger.exception("")
 627                 finally:
 628                         gtk.main_quit()
 629
 630
 631 def main():
 632         logging.basicConfig(level = logging.DEBUG)
 633         try:
 634                 os.makedirs(constants._data_path_)
 635         except OSError, e:
 636                 if e.errno != 17:
 637                         raise
 638
 639         gonvert = Gonvert()
 640         if not PROFILE_STARTUP:
 641                 gtk.main()
 642
 643
 644 if __name__ == "__main__":
 645         main()