+ def _unit_model_cmp(self, sortedModel, leftItr, rightItr):
+ leftUnitText = self._unitModel.get_value(leftItr, 0)
+ rightUnitText = self._unitModel.get_value(rightItr, 0)
+ return cmp(leftUnitText, rightUnitText)
+
+ def _symbol_model_cmp(self, sortedModel, leftItr, rightItr):
+ leftSymbolText = self._unitModel.get_value(leftItr, 2)
+ rightSymbolText = self._unitModel.get_value(rightItr, 2)
+ return cmp(leftSymbolText, rightSymbolText)
+
+ def _value_model_cmp(self, sortedModel, leftItr, rightItr):
+ #special sorting exceptions for ascii values (instead of float values)
+ if self._selectedCategory == "Computer Numbers":
+ leftValue = self._unitModel.get_value(leftItr, 1)
+ rightValue = self._unitModel.get_value(rightItr, 1)
+ else:
+ leftValueText = self._unitModel.get_value(leftItr, 1)
+ leftValue = float(leftValueText) if leftValueText else 0.0
+
+ rightValueText = self._unitModel.get_value(rightItr, 1)
+ rightValue = float(rightValueText) if rightValueText else 0.0
+ return cmp(leftValue, rightValue)
+
+ def _get_column_sort_stuff(self):
+ columns = (
+ (self._unitNameColumn, "_unit_sort_direction", self._unit_model_cmp),
+ (self._unitValueColumn, "_value_sort_direction", self._value_model_cmp),
+ (self._unitSymbolColumn, "_units_sort_direction", self._symbol_model_cmp),
+ )
+ return columns
+
+ def _switch_category(self, category):
+ self._selectedCategory = category
+ self._unitDataInCategory = unit_data.UNIT_DESCRIPTIONS[self._selectedCategory]
+
+ #Fill up the units descriptions and clear the value cells
+ self._clear_visible_unit_data()
+ for key in unit_data.get_units(self._selectedCategory):
+ iter = self._unitModel.append()
+ self._unitModel.set(iter, 0, key, 1, '', 2, self._unitDataInCategory[key][1])
+ self._sortedUnitModel.sort_column_changed()
+
+ self._select_default_unit()
+
+ def _clear_visible_unit_data(self):
+ self._unitDescription.get_buffer().set_text("")
+ self._unitName.set_text('')
+ self._unitValue.set_text('')
+ self._unitSymbol.set_text('')
+
+ self._previousUnitName.set_text('')
+ self._previousUnitValue.set_text('')
+ self._previousUnitSymbol.set_text('')
+
+ self._unitModel.clear()
+
+ def _select_default_unit(self):
+ # Restore the previous historical settings of previously selected units
+ # in this newly selected category
+ if self._selectedCategory in self._defaultUnitForCategory:
+ units = unit_data.get_units(self._selectedCategory)
+
+ #Restore oldest selection first.
+ if self._defaultUnitForCategory[self._selectedCategory][1]:
+ unitIndex = units.index(self._defaultUnitForCategory[self._selectedCategory][1])
+ self._unitsView.set_cursor(unitIndex, self._unitNameColumn, True)
+
+ #Restore newest selection second.
+ if self._defaultUnitForCategory[self._selectedCategory][0]:
+ unitIndex = units.index(self._defaultUnitForCategory[self._selectedCategory][0])
+ self._unitsView.set_cursor(unitIndex, self._unitNameColumn, True)
+
+ # select the text so user can start typing right away
+ self._unitValue.grab_focus()
+ self._unitValue.select_region(0, -1)
+