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 hildonize
  16 import unit_data
  17
  18
  19 _moduleLogger = logging.getLogger("gonvert_glade")
  20 PROFILE_STARTUP = False
  21 FORCE_HILDON_LIKE = True
  22
  23 gettext.bindtextdomain('gonvert', '/usr/share/locale')
  24 gettext.textdomain('gonvert')
  25 _ = gettext.gettext
  26
  27
  28 def change_menu_label(widgets, labelname, newtext):
  29         item_label = widgets.get_widget(labelname).get_children()[0]
  30         item_label.set_text(newtext)
  31
  32
  33 class Gonvert(object):
  34
  35         _glade_files = [
  36                 os.path.join(os.path.dirname(__file__), "gonvert.glade"),
  37                 os.path.join(os.path.dirname(__file__), "../data/gonvert.glade"),
  38                 os.path.join(os.path.dirname(__file__), "../lib/gonvert.glade"),
  39                 '/usr/lib/gonvert/gonvert.glade',
  40         ]
  41
  42         def __init__(self):
  43                 self._unitDataInCategory = None
  44                 self._unit_sort_direction = False
  45                 self._value_sort_direction = False
  46                 self._units_sort_direction = False
  47                 self._isFullScreen = False
  48
  49                 self._find_result = [] # empty find result list
  50                 self._findIndex = 0 # default to find result number zero
  51
  52                 self._selectedCategoryName = '' # preset to no selected category
  53                 self._defaultUnitForCategory = {} # empty dictionary for later use
  54
  55                 #check to see if glade file is in current directory (user must be
  56                 # running from download untar directory)
  57                 for gladePath in self._glade_files:
  58                         if os.path.isfile(gladePath):
  59                                 homepath = os.path.dirname(gladePath)
  60                                 pixmapspath = "/".join((homepath, "pixmaps"))
  61                                 widgets = gtk.glade.XML(gladePath)
  62                                 break
  63                 else:
  64                         _moduleLogger.error("UI Descriptor not found!")
  65                         gtk.main_quit()
  66                         return
  67
  68                 self._mainWindow = widgets.get_widget('mainWindow')
  69                 self._app = hildonize.get_app_class()()
  70                 self._mainWindow = hildonize.hildonize_window(self._app, self._mainWindow)
  71
  72                 change_menu_label(widgets, 'fileMenuItem', _('File'))
  73                 change_menu_label(widgets, 'exitMenuItem', _('Exit'))
  74                 change_menu_label(widgets, 'toolsMenuItem', _('Tools'))
  75                 change_menu_label(widgets, 'clearSelectionMenuItem', _('Clear selections'))
  76                 change_menu_label(widgets, 'helpMenuItem', _('Help'))
  77                 change_menu_label(widgets, 'aboutMenuItem', _('About'))
  78                 change_menu_label(widgets, 'findButton', _('Find'))
  79
  80                 self._shortlistcheck = widgets.get_widget('shortlistcheck')
  81                 self._toggleShortList = widgets.get_widget('toggleShortList')
  82
  83                 self._categorySelectionButton = widgets.get_widget("categorySelectionButton")
  84                 self._categoryView = widgets.get_widget('categoryView')
  85                 if hildonize.IS_HILDON_SUPPORTED or FORCE_HILDON_LIKE:
  86                         self._categoryView.get_parent().hide()
  87                 else:
  88                         self._categorySelectionButton.hide()
  89
  90                 self._unitsView = widgets.get_widget('unitsView')
  91                 self._unitsView.set_property('rules_hint', 1)
  92                 self._unitsView_selection = self._unitsView.get_selection()
  93                 if hildonize.IS_HILDON_SUPPORTED or FORCE_HILDON_LIKE:
  94                         self._unitsView.set_headers_visible(False)
  95
  96                 self._unitName = widgets.get_widget('unitName')
  97                 self._unitValue = widgets.get_widget('unitValue')
  98                 self._previousUnitName = widgets.get_widget('previousUnitName')
  99                 self._previousUnitValue = widgets.get_widget('previousUnitValue')
 100                 if hildonize.IS_HILDON_SUPPORTED or FORCE_HILDON_LIKE:
 101                         self._previousUnitName.get_parent().hide()
 102
 103                 self._unitSymbol = widgets.get_widget('unitSymbol')
 104                 self._previousUnitSymbol = widgets.get_widget('previousUnitSymbol')
 105
 106                 self._unitDescription = widgets.get_widget('unitDescription')
 107                 if hildonize.IS_HILDON_SUPPORTED or FORCE_HILDON_LIKE:
 108                         self._unitDescription.get_parent().get_parent().hide()
 109
 110                 self._searchLayout = widgets.get_widget('searchLayout')
 111                 self._searchLayout.hide()
 112                 self._findEntry = widgets.get_widget('findEntry')
 113                 self._findLabel = widgets.get_widget('findLabel')
 114                 self._findButton = widgets.get_widget('findButton')
 115                 ToolTips = gtk.Tooltips()
 116                 ToolTips.set_tip(self._findButton, _(u'Find unit (F6)'))
 117
 118                 #insert a self._categoryColumnumn into the units list even though the heading will not be seen
 119                 renderer = gtk.CellRendererText()
 120                 hildonize.set_cell_thumb_selectable(renderer)
 121                 self._unitNameColumn = gtk.TreeViewColumn(_('Unit Name'), renderer)
 122                 self._unitNameColumn.set_property('resizable', 1)
 123                 self._unitNameColumn.add_attribute(renderer, 'text', 0)
 124                 self._unitNameColumn.set_clickable(True)
 125                 self._unitNameColumn.connect("clicked", self._on_click_unit_column)
 126                 self._unitsView.append_column(self._unitNameColumn)
 127
 128                 self._unitValueColumn = gtk.TreeViewColumn(_('Value'), renderer)
 129                 self._unitValueColumn.set_property('resizable', 1)
 130                 self._unitValueColumn.add_attribute(renderer, 'text', 1)
 131                 self._unitValueColumn.set_clickable(True)
 132                 self._unitValueColumn.connect("clicked", self._on_click_unit_column)
 133                 self._unitsView.append_column(self._unitValueColumn)
 134
 135                 self._unitSymbolColumn = gtk.TreeViewColumn(_('Units'), renderer)
 136                 self._unitSymbolColumn.set_property('resizable', 1)
 137                 self._unitSymbolColumn.add_attribute(renderer, 'text', 2)
 138                 self._unitSymbolColumn.set_clickable(True)
 139                 self._unitSymbolColumn.connect("clicked", self._on_click_unit_column)
 140                 self._unitsView.append_column(self._unitSymbolColumn)
 141
 142                 self._unitModel = gtk.ListStore(gobject.TYPE_STRING, gobject.TYPE_STRING, gobject.TYPE_STRING)
 143                 self._sortedUnitModel = gtk.TreeModelSort(self._unitModel)
 144                 columns = self._get_column_sort_stuff()
 145                 for columnIndex, (column, sortDirection, col_cmp) in enumerate(columns):
 146                         self._sortedUnitModel.set_sort_func(columnIndex, col_cmp)
 147                 self._unitsView.set_model(self._sortedUnitModel)
 148
 149                 #Insert a column into the category list even though the heading will not be seen
 150                 renderer = gtk.CellRendererText()
 151                 self._categoryColumn = gtk.TreeViewColumn('Title', renderer)
 152                 self._categoryColumn.set_property('resizable', 1)
 153                 self._categoryColumn.add_attribute(renderer, 'text', 0)
 154                 self._categoryView.append_column(self._categoryColumn)
 155
 156                 self._categoryModel = gtk.ListStore(gobject.TYPE_STRING)
 157                 self._categoryView.set_model(self._categoryModel)
 158                 #colourize each row differently for easier reading
 159                 self._categoryView.set_property('rules_hint', 1)
 160
 161                 #Populate the catagories list
 162                 for key in unit_data.UNIT_CATEGORIES:
 163                         row = (key, )
 164                         self._categoryModel.append(row)
 165
 166                 #--------- connections to GUI ----------------
 167                 dic = {
 168                         "on_exit_menu_activate": self._on_user_exit,
 169                         "on_main_window_destroy": self._on_user_exit,
 170                         "on_categoryView_select_row": self._on_click_category,
 171                         "on_unitValue_changed": self._on_unit_value_changed,
 172                         "on_previousUnitValue_changed": self._on_previous_unit_value_changed,
 173                         "on_findButton_clicked": self._on_find_activate,
 174                         "on_findEntry_activated": self._on_find_activate,
 175                         "on_findEntry_changed": self._on_findEntry_changed,
 176                         "on_aboutMenuItem_activate": self._on_about_clicked,
 177                         "on_clearSelectionMenuItem_activate": self._on_user_clear_selections,
 178                         "on_unitsView_cursor_changed": self._on_click_unit,
 179                         "on_shortlistcheck_toggled": self._on_shortlist_changed,
 180                         "on_toggleShortList_activate": self._on_edit_shortlist,
 181                 }
 182                 widgets.signal_autoconnect(dic)
 183                 self._mainWindow.connect("key-press-event", self._on_key_press)
 184                 self._mainWindow.connect("window-state-event", self._on_window_state_change)
 185                 self._categorySelectionButton.connect("clicked", self._on_category_selector_clicked)
 186
 187                 replacementButtons = []
 188                 menu = hildonize.hildonize_menu(
 189                         self._mainWindow,
 190                         widgets.get_widget("mainMenuBar"),
 191                         replacementButtons
 192                 )
 193                 if not hildonize.IS_HILDON_SUPPORTED:
 194                         _moduleLogger.warning("No hildonization support")
 195
 196                 hildonize.set_application_title(
 197                         self._mainWindow, "%s - Unit Conversion Utility" % constants.__pretty_app_name__
 198                 )
 199                 iconPath = pixmapspath + '/gonvert.png'
 200                 if os.path.exists(iconPath):
 201                         self._mainWindow.set_icon(gtk.gdk.pixbuf_new_from_file(iconPath))
 202                 else:
 203                         _moduleLogger.warn("Error: Could not find gonvert icon: %s" % iconPath)
 204
 205                 self._load_settings()
 206
 207         def _load_settings(self):
 208                 #Restore window size from previously saved settings if it exists and is valid.
 209                 windowDatPath = "/".join((constants._data_path_, "window.dat"))
 210                 if os.path.exists(windowDatPath):
 211                         #Retrieving previous window settings from ~/.gonvert/window.dat
 212                         saved_window = pickle.load(open(windowDatPath, "r"))
 213                         #If the 'size' has been stored, then extract size from saved_window.
 214                         if 'size' in saved_window:
 215                                 a, b = saved_window['size']
 216                                 self._mainWindow.resize(a, b)
 217
 218                 #Restore selections from previously saved settings if it exists and is valid.
 219                 categoryIndex = 0
 220                 selectedCategoryName = unit_data.UNIT_CATEGORIES[0]
 221                 selectionsDatPath = "/".join((constants._data_path_, "selections.dat"))
 222                 if os.path.exists(selectionsDatPath):
 223                         #Retrieving previous selections from ~/.gonvert/selections.dat
 224                         selections = pickle.load(open(selectionsDatPath, 'r'))
 225                         #Restoring previous selections.
 226                         #If the 'selected_unts' has been stored, then extract self._defaultUnitForCategory from selections.
 227                         if 'selected_units' in selections:
 228                                 self._defaultUnitForCategory = selections['selected_units']
 229                         #Make sure that the 'self._selectedCategoryName' has been stored.
 230                         if 'selected_category' in selections:
 231                                 #Match an available category to the previously selected category.
 232                                 selectedCategoryName = selections['selected_category']
 233                                 try:
 234                                         categoryIndex = unit_data.UNIT_CATEGORIES.index(selectedCategoryName)
 235                                 except ValueError:
 236                                         _moduleLogger.warn("Unknown category: %s" % selectedCategoryName)
 237
 238                 self._categorySelectionButton.set_label(selectedCategoryName)
 239                 self._categoryView.set_cursor(categoryIndex, self._categoryColumn, False)
 240                 self._categoryView.grab_focus()
 241
 242                 self._select_default_unit()
 243
 244         def _save_settings(self):
 245                 """
 246                 This routine saves the selections to a file, and
 247                 should therefore only be called when exiting the program.
 248
 249                 Update selections dictionary which consists of the following keys:
 250                 'self._selectedCategoryName': full name of selected category
 251                 'self._defaultUnitForCategory': self._defaultUnitForCategory dictionary which contains:
 252                 [categoryname: #1 displayed unit, #2 displayed unit]
 253                 """
 254                 #Determine the contents of the selected category row
 255                 selected, iter = self._categoryView.get_selection().get_selected()
 256                 self._selectedCategoryName = self._categoryModel.get_value(iter, 0)
 257
 258                 selections = {
 259                         'selected_category': self._selectedCategoryName,
 260                         'selected_units': self._defaultUnitForCategory
 261                 }
 262                 selectionsDatPath = "/".join((constants._data_path_, "selections.dat"))
 263                 pickle.dump(selections, open(selectionsDatPath, 'w'))
 264
 265                 #Get last size of app and save it
 266                 window_settings = {
 267                         'size': self._mainWindow.get_size()
 268                 }
 269                 windowDatPath = "/".join((constants._data_path_, "window.dat"))
 270                 pickle.dump(window_settings, open(windowDatPath, 'w'))
 271
 272         def _clear_find(self):
 273                 # switch to "new find" state
 274                 self._find_result = []
 275                 self._findIndex = 0
 276
 277                 # Clear our user message
 278                 self._findLabel.set_text('')
 279
 280         def _find_first(self):
 281                 assert len(self._find_result) == 0
 282                 assert self._findIndex == 0
 283                 findString = self._findEntry.get_text().strip().lower()
 284                 if not findString:
 285                         return
 286
 287                 # Gather info on all the matching units from all categories
 288                 for catIndex, category in enumerate(unit_data.UNIT_CATEGORIES):
 289                         units = unit_data.get_units(category)
 290                         for unitIndex, unit in enumerate(units):
 291                                 loweredUnit = unit.lower()
 292                                 if loweredUnit in findString or findString in loweredUnit:
 293                                         self._find_result.append((category, unit, catIndex, unitIndex))
 294
 295         def _update_find_selection(self):
 296                 assert 0 < len(self._find_result)
 297
 298                 #check if next find is in a new category (prevent category changes when unnecessary
 299                 searchCategoryName = self._find_result[self._findIndex][0]
 300                 if self._selectedCategoryName != searchCategoryName:
 301                         self._categorySelectionButton.set_label(searchCategoryName)
 302                         self._categoryView.set_cursor(
 303                                 self._find_result[self._findIndex][2], self._categoryColumn, False
 304                         )
 305
 306                 self._unitsView.set_cursor(
 307                         self._find_result[self._findIndex][3], self._unitNameColumn, True
 308                 )
 309
 310         def _find_next(self):
 311                 if len(self._find_result) == 0:
 312                         self._find_first()
 313                 else:
 314                         if self._findIndex == len(self._find_result)-1:
 315                                 self._findIndex = 0
 316                         else:
 317                                 self._findIndex += 1
 318
 319                 if not self._find_result:
 320                         self._findLabel.set_text('Text not found')
 321                 else:
 322                         self._update_find_selection()
 323                         resultsLeft = len(self._find_result) - self._findIndex - 1
 324                         self._findLabel.set_text(
 325                                 '%s result(s) left' % (resultsLeft, )
 326                         )
 327
 328         def _find_previous(self):
 329                 if len(self._find_result) == 0:
 330                         self._find_first()
 331                 else:
 332                         if self._findIndex == 0:
 333                                 self._findIndex = len(self._find_result)-1
 334                         else:
 335                                 self._findIndex -= 1
 336
 337                 if not self._find_result:
 338                         self._findLabel.set_text('Text not found')
 339                 else:
 340                         self._update_find_selection()
 341                         resultsLeft = len(self._find_result) - self._findIndex - 1
 342                         self._findLabel.set_text(
 343                                 '%s result(s) left' % (resultsLeft, )
 344                         )
 345
 346         def _toggle_find(self):
 347                 if self._searchLayout.get_property("visible"):
 348                         self._searchLayout.hide()
 349                         self._unitsView.grab_focus()
 350                 else:
 351                         self._searchLayout.show()
 352                         self._findEntry.grab_focus()
 353
 354         def _unit_model_cmp(self, sortedModel, leftItr, rightItr):
 355                 leftUnitText = self._unitModel.get_value(leftItr, 0)
 356                 rightUnitText = self._unitModel.get_value(rightItr, 0)
 357                 return cmp(leftUnitText, rightUnitText)
 358
 359         def _symbol_model_cmp(self, sortedModel, leftItr, rightItr):
 360                 leftSymbolText = self._unitModel.get_value(leftItr, 2)
 361                 rightSymbolText = self._unitModel.get_value(rightItr, 2)
 362                 return cmp(leftSymbolText, rightSymbolText)
 363
 364         def _value_model_cmp(self, sortedModel, leftItr, rightItr):
 365                 #special sorting exceptions for ascii values (instead of float values)
 366                 if self._selectedCategoryName == "Computer Numbers":
 367                         leftValue = self._unitModel.get_value(leftItr, 1)
 368                         rightValue = self._unitModel.get_value(rightItr, 1)
 369                 else:
 370                         leftValueText = self._unitModel.get_value(leftItr, 1)
 371                         leftValue = float(leftValueText) if leftValueText else 0.0
 372
 373                         rightValueText = self._unitModel.get_value(rightItr, 1)
 374                         rightValue = float(rightValueText) if rightValueText else 0.0
 375                 return cmp(leftValue, rightValue)
 376
 377         def _get_column_sort_stuff(self):
 378                 columns = (
 379                         (self._unitNameColumn, "_unit_sort_direction", self._unit_model_cmp),
 380                         (self._unitValueColumn, "_value_sort_direction", self._value_model_cmp),
 381                         (self._unitSymbolColumn, "_units_sort_direction", self._symbol_model_cmp),
 382                 )
 383                 return columns
 384
 385         def _switch_category(self, category):
 386                 self._selectedCategoryName = category
 387                 self._unitDataInCategory = unit_data.UNIT_DESCRIPTIONS[self._selectedCategoryName]
 388
 389                 #Fill up the units descriptions and clear the value cells
 390                 self._clear_visible_unit_data()
 391                 for key in unit_data.get_units(self._selectedCategoryName):
 392                         iter = self._unitModel.append()
 393                         self._unitModel.set(iter, 0, key, 1, '', 2, self._unitDataInCategory[key][1])
 394                 self._sortedUnitModel.sort_column_changed()
 395
 396                 self._select_default_unit()
 397
 398         def _clear_visible_unit_data(self):
 399                 self._unitDescription.get_buffer().set_text("")
 400                 self._unitName.set_text('')
 401                 self._unitValue.set_text('')
 402                 self._unitSymbol.set_text('')
 403
 404                 self._previousUnitName.set_text('')
 405                 self._previousUnitValue.set_text('')
 406                 self._previousUnitSymbol.set_text('')
 407
 408                 self._unitModel.clear()
 409
 410         def _select_default_unit(self):
 411                 # Restore the previous historical settings of previously selected units
 412                 # in this newly selected category
 413                 defaultPrimary = unit_data.get_base_unit(self._selectedCategoryName)
 414                 defaultSecondary = ""
 415                 if self._selectedCategoryName in self._defaultUnitForCategory:
 416                         if self._defaultUnitForCategory[self._selectedCategoryName][0]:
 417                                 defaultPrimary = self._defaultUnitForCategory[self._selectedCategoryName][0]
 418                         if self._defaultUnitForCategory[self._selectedCategoryName][1]:
 419                                 defaultSecondary = self._defaultUnitForCategory[self._selectedCategoryName][1]
 420
 421                 units = unit_data.get_units(self._selectedCategoryName)
 422
 423                 #Restore oldest selection first.
 424                 if defaultPrimary:
 425                         try:
 426                                 unitIndex = units.index(defaultPrimary)
 427                         except ValueError:
 428                                 unitIndex = 0
 429                         self._unitsView.set_cursor(unitIndex, self._unitNameColumn, True)
 430
 431                 #Restore newest selection second.
 432                 if defaultSecondary:
 433                         try:
 434                                 unitIndex = units.index(defaultSecondary)
 435                         except ValueError:
 436                                 unitIndex = 0
 437                         self._unitsView.set_cursor(unitIndex, self._unitNameColumn, True)
 438
 439                 # select the text so user can start typing right away
 440                 self._unitValue.grab_focus()
 441                 self._unitValue.select_region(0, -1)
 442
 443         def _sanitize_value(self, userEntry):
 444                 if self._selectedCategoryName == "Computer Numbers":
 445                         if userEntry == '':
 446                                 value = '0'
 447                         else:
 448                                 value = userEntry
 449                 else:
 450                         if userEntry == '':
 451                                 value = 0.0
 452                         else:
 453                                 value = float(userEntry)
 454                 return value
 455
 456         def _on_shortlist_changed(self, *args):
 457                 try:
 458                         raise NotImplementedError("%s" % self._shortlistcheck.get_active())
 459                 except Exception:
 460                         _moduleLogger.exception("")
 461
 462         def _on_edit_shortlist(self, *args):
 463                 try:
 464                         raise NotImplementedError("%s" % self._toggleShortList.get_active())
 465                 except Exception:
 466                         _moduleLogger.exception("")
 467
 468         def _on_user_clear_selections(self, *args):
 469                 try:
 470                         selectionsDatPath = "/".join((constants._data_path_, "selections.dat"))
 471                         os.remove(selectionsDatPath)
 472                         self._defaultUnitForCategory = {}
 473                 except Exception:
 474                         _moduleLogger.exception("")
 475
 476         def _on_key_press(self, widget, event, *args):
 477                 """
 478                 @note Hildon specific
 479                 """
 480                 RETURN_TYPES = (gtk.keysyms.Return, gtk.keysyms.ISO_Enter, gtk.keysyms.KP_Enter)
 481                 try:
 482                         if (
 483                                 event.keyval == gtk.keysyms.F6 or
 484                                 event.keyval in RETURN_TYPES and event.get_state() & gtk.gdk.CONTROL_MASK
 485                         ):
 486                                 if self._isFullScreen:
 487                                         self._mainWindow.unfullscreen()
 488                                 else:
 489                                         self._mainWindow.fullscreen()
 490                         elif event.keyval == gtk.keysyms.f and event.get_state() & gtk.gdk.CONTROL_MASK:
 491                                 self._toggle_find()
 492                         elif event.keyval == gtk.keysyms.p and event.get_state() & gtk.gdk.CONTROL_MASK:
 493                                 self._find_previous()
 494                         elif event.keyval == gtk.keysyms.n and event.get_state() & gtk.gdk.CONTROL_MASK:
 495                                 self._find_next()
 496                 except Exception, e:
 497                         _moduleLogger.exception("")
 498
 499         def _on_window_state_change(self, widget, event, *args):
 500                 """
 501                 @note Hildon specific
 502                 """
 503                 try:
 504                         if event.new_window_state & gtk.gdk.WINDOW_STATE_FULLSCREEN:
 505                                 self._isFullScreen = True
 506                         else:
 507                                 self._isFullScreen = False
 508                 except Exception, e:
 509                         _moduleLogger.exception("")
 510
 511         def _on_findEntry_changed(self, *args):
 512                 """
 513                 Clear out find results since the user wants to look for something new
 514                 """
 515                 try:
 516                         self._clear_find()
 517                 except Exception:
 518                         _moduleLogger.exception("")
 519
 520         def _on_find_activate(self, *args):
 521                 try:
 522                         self._find_next()
 523                         self._findButton.grab_focus()
 524                 except Exception:
 525                         _moduleLogger.exception("")
 526
 527         def _on_click_unit_column(self, col):
 528                 """
 529                 Sort the contents of the col when the user clicks on the title.
 530                 """
 531                 try:
 532                         #Determine which column requires sorting
 533                         columns = self._get_column_sort_stuff()
 534                         for columnIndex, (maybeCol, directionName, col_cmp) in enumerate(columns):
 535                                 if col is maybeCol:
 536                                         direction = getattr(self, directionName)
 537                                         gtkDirection = gtk.SORT_ASCENDING if direction else gtk.SORT_DESCENDING
 538
 539                                         # cause a sort
 540                                         self._sortedUnitModel.set_sort_column_id(columnIndex, gtkDirection)
 541
 542                                         # set the visual for sorting
 543                                         col.set_sort_indicator(True)
 544                                         col.set_sort_order(not direction)
 545
 546                                         setattr(self, directionName, not direction)
 547                                         break
 548                                 else:
 549                                         maybeCol.set_sort_indicator(False)
 550                         else:
 551                                 assert False, "Unknown column: %s" % (col.get_title(), )
 552                 except Exception:
 553                         _moduleLogger.exception("")
 554
 555         def _on_category_selector_clicked(self, *args):
 556                 try:
 557                         currenntIndex = unit_data.UNIT_CATEGORIES.index(self._selectedCategoryName)
 558                         newIndex = hildonize.touch_selector(
 559                                 self._mainWindow,
 560                                 "Categories",
 561                                 unit_data.UNIT_CATEGORIES,
 562                                 currenntIndex,
 563                         )
 564
 565                         selectedCategoryName = unit_data.UNIT_CATEGORIES[newIndex]
 566                         self._categorySelectionButton.set_label(selectedCategoryName)
 567                         self._categoryView.set_cursor(newIndex, self._categoryColumn, False)
 568                         self._categoryView.grab_focus()
 569                 except Exception:
 570                         _moduleLogger.exception("")
 571
 572         def _on_click_category(self, *args):
 573                 try:
 574                         selected, iter = self._categoryView.get_selection().get_selected()
 575                         if iter is None:
 576                                 # User is typing in an invalid string, not selecting any category
 577                                 return
 578                         selectedCategory = self._categoryModel.get_value(iter, 0)
 579                         self._switch_category(selectedCategory)
 580                 except Exception:
 581                         _moduleLogger.exception("")
 582
 583         def _on_click_unit(self, *args):
 584                 try:
 585                         selected, iter = self._unitsView.get_selection().get_selected()
 586                         selected_unit = selected.get_value(iter, 0)
 587                         unit_spec = self._unitDataInCategory[selected_unit]
 588
 589                         if self._unitName.get_text() != selected_unit:
 590                                 self._previousUnitName.set_text(self._unitName.get_text())
 591                                 self._previousUnitValue.set_text(self._unitValue.get_text())
 592                                 self._previousUnitSymbol.set_text(self._unitSymbol.get())
 593
 594                         self._unitName.set_text(selected_unit)
 595                         self._unitValue.set_text(selected.get_value(iter, 1))
 596                         buffer = self._unitDescription.get_buffer()
 597                         buffer.set_text(unit_spec[2])
 598                         self._unitSymbol.set_text(unit_spec[1]) # put units into label text
 599                         if unit_spec[1]:
 600                                 self._unitSymbol.show()
 601                         else:
 602                                 self._unitSymbol.hide()
 603
 604                         if self._unitValue.get_text() == '':
 605                                 if self._selectedCategoryName == "Computer Numbers":
 606                                         self._unitValue.set_text("0")
 607                                 else:
 608                                         self._unitValue.set_text("0.0")
 609
 610                         self._defaultUnitForCategory[self._selectedCategoryName] = [
 611                                 self._unitName.get_text(), self._previousUnitName.get_text()
 612                         ]
 613
 614                         # select the text so user can start typing right away
 615                         self._unitValue.grab_focus()
 616                         self._unitValue.select_region(0, -1)
 617                 except Exception:
 618                         _moduleLogger.exception("")
 619
 620         def _on_unit_value_changed(self, *args):
 621                 try:
 622                         if self._unitName.get_text() == '':
 623                                 return
 624                         if not self._unitValue.is_focus():
 625                                 return
 626
 627                         #retrieve the conversion function and value from the selected unit
 628                         value = self._sanitize_value(self._unitValue.get_text())
 629                         func, arg = self._unitDataInCategory[self._unitName.get_text()][0]
 630                         base = func.to_base(value, arg)
 631
 632                         #point to the first row
 633                         for row in self._unitModel:
 634                                 func, arg = self._unitDataInCategory[row[0]][0]
 635                                 row[1] = str(func.from_base(base, arg))
 636
 637                         # Update the secondary unit entry
 638                         if self._previousUnitName.get_text() != '':
 639                                 func, arg = self._unitDataInCategory[self._previousUnitName.get_text()][0]
 640                                 self._previousUnitValue.set_text(str(func.from_base(base, arg, )))
 641                 except Exception:
 642                         _moduleLogger.exception("")
 643
 644         def _on_previous_unit_value_changed(self, *args):
 645                 try:
 646                         if self._previousUnitName.get_text() == '':
 647                                 return
 648                         if not self._previousUnitValue.is_focus():
 649                                 return
 650
 651                         #retrieve the conversion function and value from the selected unit
 652                         value = self._sanitize_value(self._previousUnitValue.get_text())
 653                         func, arg = self._unitDataInCategory[self._previousUnitName.get_text()][0]
 654                         base = func.to_base(value, arg)
 655
 656                         #point to the first row
 657                         for row in self._unitModel:
 658                                 func, arg = self._unitDataInCategory[row[0]][0]
 659                                 row[1] = str(func.from_base(base, arg))
 660
 661                         # Update the primary unit entry
 662                         func, arg = self._unitDataInCategory[self._unitName.get_text()][0]
 663                         self._unitValue.set_text(str(func.from_base(base, arg, )))
 664                 except Exception:
 665                         _moduleLogger.exception("")
 666
 667         def _on_about_clicked(self, a):
 668                 dlg = gtk.AboutDialog()
 669                 dlg.set_name(constants.__pretty_app_name__)
 670                 dlg.set_version("%s-%d" % (constants.__version__, constants.__build__))
 671                 dlg.set_copyright("Copyright 2009 - GPL")
 672                 dlg.set_comments("")
 673                 dlg.set_website("http://unihedron.com/projects/gonvert/gonvert.php")
 674                 dlg.set_authors(["Anthony Tekatch <anthony@unihedron.com>", "Ed Page <edpage@byu.net>"])
 675                 dlg.run()
 676                 dlg.destroy()
 677
 678         def _on_user_exit(self, *args):
 679                 try:
 680                         self._save_settings()
 681                 except Exception:
 682                         _moduleLogger.exception("")
 683                 finally:
 684                         gtk.main_quit()
 685
 686
 687 def main():
 688         logging.basicConfig(level = logging.DEBUG)
 689         try:
 690                 os.makedirs(constants._data_path_)
 691         except OSError, e:
 692                 if e.errno != 17:
 693                         raise
 694
 695         gonvert = Gonvert()
 696         if not PROFILE_STARTUP:
 697                 gtk.main()
 698
 699
 700 if __name__ == "__main__":
 701         main()