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

   1 #!/usr/bin/env python
   2 # -*- coding: UTF8 -*-
   3
   4 from __future__ import with_statement
   5
   6 import sys
   7 import os
   8 import math
   9 import logging
  10
  11 from PyQt4 import QtGui
  12 from PyQt4 import QtCore
  13
  14 import constants
  15 from util import misc as misc_utils
  16 import unit_data
  17
  18
  19 _moduleLogger = logging.getLogger("gonvert_glade")
  20
  21
  22 def change_menu_label(widgets, labelname, newtext):
  23         item_label = widgets.get_widget(labelname).get_children()[0]
  24         item_label.set_text(newtext)
  25
  26
  27 def split_number(number):
  28         try:
  29                 fractional, integer = math.modf(number)
  30         except TypeError:
  31                 integerDisplay = number
  32                 fractionalDisplay = ""
  33         else:
  34                 integerDisplay = str(integer)
  35                 fractionalDisplay = str(fractional)
  36                 if "e+" in integerDisplay:
  37                         integerDisplay = number
  38                         fractionalDisplay = ""
  39                 elif "e-" in fractionalDisplay and 0.0 < integer:
  40                         integerDisplay = number
  41                         fractionalDisplay = ""
  42                 elif "e-" in fractionalDisplay:
  43                         integerDisplay = ""
  44                         fractionalDisplay = number
  45                 else:
  46                         integerDisplay = integerDisplay.split(".", 1)[0] + "."
  47                         fractionalDisplay = fractionalDisplay.rsplit(".", 1)[-1]
  48
  49         return integerDisplay, fractionalDisplay
  50
  51
  52 class Gonvert(object):
  53
  54         # @todo Persist settings
  55         # @todo Favorites
  56         # @todo Add menus to all windows
  57         # @bug Fix the resurrecting window problem
  58         # @todo Close Window / Quit keyboard shortcuts
  59         # @todo Ctrl+l support
  60         # @todo Unit conversion window: focus always on input, arrows switch units
  61
  62         _DATA_PATHS = [
  63                 os.path.dirname(__file__),
  64                 os.path.join(os.path.dirname(__file__), "../data"),
  65                 os.path.join(os.path.dirname(__file__), "../lib"),
  66                 '/usr/share/gonvert',
  67                 '/usr/lib/gonvert',
  68         ]
  69
  70         def __init__(self):
  71                 self._dataPath = ""
  72                 for dataPath in self._DATA_PATHS:
  73                         appIconPath = os.path.join(dataPath, "pixmaps", "gonvert.png")
  74                         if os.path.isfile(appIconPath):
  75                                 self._dataPath = dataPath
  76                                 break
  77                 else:
  78                         raise RuntimeError("UI Descriptor not found!")
  79                 self._appIconPath = appIconPath
  80                 self._recent = []
  81                 self._isFullscreen = False
  82
  83                 self._jumpWindow = None
  84                 self._recentWindow = None
  85                 self._catWindow = None
  86
  87                 self._jumpAction = QtGui.QAction(None)
  88                 self._jumpAction.setText("Quick Jump")
  89                 self._jumpAction.setStatusTip("Search for a unit and jump straight to it")
  90                 self._jumpAction.setToolTip("Search for a unit and jump straight to it")
  91                 self._jumpAction.setShortcut(QtGui.QKeySequence("CTRL+j"))
  92                 self._jumpAction.triggered.connect(self._on_jump_start)
  93
  94                 self._recentAction = QtGui.QAction(None)
  95                 self._recentAction.setText("Recent Units")
  96                 self._recentAction.setStatusTip("View the recent units")
  97                 self._recentAction.setToolTip("View the recent units")
  98                 self._recentAction.setShortcut(QtGui.QKeySequence("CTRL+r"))
  99                 self._recentAction.triggered.connect(self._on_recent_start)
 100
 101                 self._fullscreenAction = QtGui.QAction(None)
 102                 self._fullscreenAction.setText("Toggle Fullscreen")
 103                 self._fullscreenAction.setShortcut(QtGui.QKeySequence("CTRL+Enter"))
 104                 self._fullscreenAction.triggered.connect(self._on_toggle_fullscreen)
 105
 106                 self.request_category()
 107
 108         def request_category(self):
 109                 if self._catWindow is not None:
 110                         self._catWindow.close()
 111                         self._catWindow = None
 112                 self._catWindow = CategoryWindow(None, self)
 113                 return self._catWindow
 114
 115         def search_units(self):
 116                 if self._jumpWindow is not None:
 117                         self._jumpWindow.close()
 118                         self._jumpWindow = None
 119                 self._jumpWindow = QuickJump(None, self)
 120                 return self._jumpWindow
 121
 122         def show_recent(self):
 123                 if self._recentWindow is not None:
 124                         self._recentWindow.close()
 125                         self._recentWindow = None
 126                 self._recentWindow = Recent(None, self)
 127                 return self._recentWindow
 128
 129         def add_recent(self, categoryName, unitName):
 130                 catUnit = categoryName, unitName
 131                 try:
 132                         self._recent.remove(catUnit)
 133                 except ValueError:
 134                         pass # ignore if its not already in the recent history
 135                 self._recent.append(catUnit)
 136
 137         def get_recent_unit(self, categoryName):
 138                 for catName, unitName in reversed(self._recent):
 139                         if catName == categoryName:
 140                                 return unitName
 141                 else:
 142                         return ""
 143
 144         def get_recent(self):
 145                 return reversed(self._recent)
 146
 147         @property
 148         def appIconPath(self):
 149                 return self._appIconPath
 150
 151         @property
 152         def jumpAction(self):
 153                 return self._jumpAction
 154
 155         @property
 156         def recentAction(self):
 157                 return self._recentAction
 158
 159         @property
 160         def fullscreenAction(self):
 161                 return self._fullscreenAction
 162
 163         def _walk_children(self):
 164                 if self._catWindow is not None:
 165                         yield self._catWindow
 166                 if self._jumpWindow is not None:
 167                         yield self._jumpWindow
 168                 if self._recentWindow is not None:
 169                         yield self._recentWindow
 170
 171         @misc_utils.log_exception(_moduleLogger)
 172         def _on_toggle_fullscreen(self, checked = False):
 173                 self._isFullscreen = not self._isFullscreen
 174                 for window in self._walk_children():
 175                         window.setFullscreen(self._isFullscreen)
 176
 177         @misc_utils.log_exception(_moduleLogger)
 178         def _on_jump_start(self, checked = False):
 179                 self.search_units()
 180
 181         @misc_utils.log_exception(_moduleLogger)
 182         def _on_recent_start(self, checked = False):
 183                 self.show_recent()
 184
 185
 186 class CategoryWindow(object):
 187
 188         def __init__(self, parent, app):
 189                 self._app = app
 190                 self._unitWindow = None
 191
 192                 self._categories = QtGui.QTreeWidget()
 193                 self._categories.setHeaderLabels(["Categories"])
 194                 self._categories.itemClicked.connect(self._on_category_clicked)
 195                 self._categories.setHeaderHidden(True)
 196                 self._categories.setAlternatingRowColors(True)
 197                 for catName in unit_data.UNIT_CATEGORIES:
 198                         twi = QtGui.QTreeWidgetItem(self._categories)
 199                         twi.setText(0, catName)
 200
 201                 self._layout = QtGui.QVBoxLayout()
 202                 self._layout.addWidget(self._categories)
 203
 204                 centralWidget = QtGui.QWidget()
 205                 centralWidget.setLayout(self._layout)
 206
 207                 self._window = QtGui.QMainWindow(parent)
 208                 if parent is not None:
 209                         self._window.setWindowModality(QtCore.Qt.WindowModal)
 210                 self._window.setWindowTitle("%s - Categories" % constants.__pretty_app_name__)
 211                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 212                 self._window.setCentralWidget(centralWidget)
 213
 214                 viewMenu = self._window.menuBar().addMenu("&View")
 215                 viewMenu.addAction(self._app.fullscreenAction)
 216                 viewMenu.addSeparator()
 217                 viewMenu.addAction(self._app.jumpAction)
 218                 viewMenu.addAction(self._app.recentAction)
 219
 220                 self._window.show()
 221
 222         def walk_children(self):
 223                 if self._unitWindow is not None:
 224                         yield self._unitWindow
 225
 226         def close(self):
 227                 for child in self.walk_children():
 228                         child.close()
 229                 self._window.close()
 230
 231         def selectCategory(self, categoryName):
 232                 for child in self.walk_children():
 233                         child.close()
 234                 self._unitWindow = UnitWindow(self._window, categoryName, self._app)
 235                 return self._unitWindow
 236
 237         def setFullscreen(self, isFullscreen):
 238                 if isFullscreen:
 239                         self._window.showFullScreen()
 240                 else:
 241                         self._window.showNormal()
 242                 for child in self.walk_children():
 243                         child.setFullscreen(isFullscreen)
 244
 245         @misc_utils.log_exception(_moduleLogger)
 246         def _on_category_clicked(self, item, columnIndex):
 247                 categoryName = unicode(item.text(0))
 248                 self.selectCategory(categoryName)
 249
 250
 251 class QuickJump(object):
 252
 253         MINIMAL_ENTRY = 3
 254
 255         def __init__(self, parent, app):
 256                 self._app = app
 257
 258                 self._searchLabel = QtGui.QLabel("Search:")
 259                 self._searchEntry = QtGui.QLineEdit("")
 260                 self._searchEntry.textEdited.connect(self._on_search_edited)
 261
 262                 self._entryLayout = QtGui.QHBoxLayout()
 263                 self._entryLayout.addWidget(self._searchLabel)
 264                 self._entryLayout.addWidget(self._searchEntry)
 265
 266                 self._resultsBox = QtGui.QTreeWidget()
 267                 self._resultsBox.setHeaderLabels(["Categories", "Units"])
 268                 self._resultsBox.setHeaderHidden(True)
 269                 self._resultsBox.setAlternatingRowColors(True)
 270                 self._resultsBox.itemClicked.connect(self._on_result_clicked)
 271
 272                 self._layout = QtGui.QVBoxLayout()
 273                 self._layout.addLayout(self._entryLayout)
 274                 self._layout.addWidget(self._resultsBox)
 275
 276                 centralWidget = QtGui.QWidget()
 277                 centralWidget.setLayout(self._layout)
 278
 279                 self._window = QtGui.QMainWindow(parent)
 280                 if parent is not None:
 281                         self._window.setWindowModality(QtCore.Qt.WindowModal)
 282                 self._window.setWindowTitle("%s - Quick Jump" % constants.__pretty_app_name__)
 283                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 284                 self._window.setCentralWidget(centralWidget)
 285
 286                 self._window.show()
 287
 288         def close(self):
 289                 self._window.close()
 290
 291         def setFullscreen(self, isFullscreen):
 292                 if isFullscreen:
 293                         self._window.showFullScreen()
 294                 else:
 295                         self._window.showNormal()
 296
 297         @misc_utils.log_exception(_moduleLogger)
 298         def _on_result_clicked(self, item, columnIndex):
 299                 categoryName = unicode(item.text(0))
 300                 unitName = unicode(item.text(1))
 301                 catWindow = self._app.request_category()
 302                 unitsWindow = catWindow.selectCategory(categoryName)
 303                 unitsWindow.select_unit(unitName)
 304                 self.close()
 305
 306         @misc_utils.log_exception(_moduleLogger)
 307         def _on_search_edited(self, *args):
 308                 userInput = self._searchEntry.text()
 309                 if len(userInput) <  self.MINIMAL_ENTRY:
 310                         return
 311
 312                 self._resultsBox.clear()
 313                 lowerInput = str(userInput).lower()
 314                 for catIndex, category in enumerate(unit_data.UNIT_CATEGORIES):
 315                         units = unit_data.get_units(category)
 316                         for unitIndex, unit in enumerate(units):
 317                                 loweredUnit = unit.lower()
 318                                 if lowerInput in loweredUnit:
 319                                         twi = QtGui.QTreeWidgetItem(self._resultsBox)
 320                                         twi.setText(0, category)
 321                                         twi.setText(1, unit)
 322
 323
 324 class Recent(object):
 325
 326         def __init__(self, parent, app):
 327                 self._app = app
 328
 329                 self._resultsBox = QtGui.QTreeWidget()
 330                 self._resultsBox.setHeaderLabels(["Categories", "Units"])
 331                 self._resultsBox.setHeaderHidden(True)
 332                 self._resultsBox.setAlternatingRowColors(True)
 333                 self._resultsBox.itemClicked.connect(self._on_result_clicked)
 334
 335                 self._layout = QtGui.QVBoxLayout()
 336                 self._layout.addWidget(self._resultsBox)
 337
 338                 centralWidget = QtGui.QWidget()
 339                 centralWidget.setLayout(self._layout)
 340
 341                 self._window = QtGui.QMainWindow(parent)
 342                 if parent is not None:
 343                         self._window.setWindowModality(QtCore.Qt.WindowModal)
 344                 self._window.setWindowTitle("%s - Recent" % constants.__pretty_app_name__)
 345                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 346                 self._window.setCentralWidget(centralWidget)
 347
 348                 for cat, unit in self._app.get_recent():
 349                         twi = QtGui.QTreeWidgetItem(self._resultsBox)
 350                         twi.setText(0, cat)
 351                         twi.setText(1, unit)
 352
 353                 self._window.show()
 354
 355         def close(self):
 356                 self._window.close()
 357
 358         def setFullscreen(self, isFullscreen):
 359                 if isFullscreen:
 360                         self._window.showFullScreen()
 361                 else:
 362                         self._window.showNormal()
 363
 364         @misc_utils.log_exception(_moduleLogger)
 365         def _on_result_clicked(self, item, columnIndex):
 366                 categoryName = unicode(item.text(0))
 367                 unitName = unicode(item.text(1))
 368                 catWindow = self._app.request_category()
 369                 unitsWindow = catWindow.selectCategory(categoryName)
 370                 unitsWindow.select_unit(unitName)
 371                 self.close()
 372
 373
 374 class UnitData(object):
 375
 376         HEADERS = ["Name", "Value", "", "Unit"]
 377         ALIGNMENT = [QtCore.Qt.AlignLeft, QtCore.Qt.AlignRight, QtCore.Qt.AlignLeft, QtCore.Qt.AlignLeft]
 378
 379         def __init__(self, name, unit, description, conversion):
 380                 self._name = name
 381                 self._unit = unit
 382                 self._description = description
 383                 self._conversion = conversion
 384
 385                 self._value = 0.0
 386                 self._integerDisplay, self._fractionalDisplay = split_number(self._value)
 387
 388         @property
 389         def name(self):
 390                 return self._name
 391
 392         @property
 393         def value(self):
 394                 return self._value
 395
 396         def update_value(self, newValue):
 397                 self._value = newValue
 398                 self._integerDisplay, self._fractionalDisplay = split_number(newValue)
 399
 400         @property
 401         def unit(self):
 402                 return self._unit
 403
 404         @property
 405         def conversion(self):
 406                 return self._conversion
 407
 408         def data(self, column):
 409                 try:
 410                         return [self._name, self._integerDisplay, self._fractionalDisplay, self._unit][column]
 411                 except IndexError:
 412                         return None
 413
 414
 415 class UnitModel(QtCore.QAbstractItemModel):
 416
 417         def __init__(self, categoryName, parent=None):
 418                 super(UnitModel, self).__init__(parent)
 419                 self._categoryName = categoryName
 420                 self._unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
 421
 422                 self._children = []
 423                 for key in unit_data.get_units(self._categoryName):
 424                         conversion, unit, description = self._unitData[key]
 425                         self._children.append(UnitData(key, unit, description, conversion))
 426
 427         @misc_utils.log_exception(_moduleLogger)
 428         def columnCount(self, parent):
 429                 if parent.isValid():
 430                         return 0
 431                 else:
 432                         return len(UnitData.HEADERS)
 433
 434         @misc_utils.log_exception(_moduleLogger)
 435         def data(self, index, role):
 436                 if not index.isValid():
 437                         return None
 438                 elif role == QtCore.Qt.TextAlignmentRole:
 439                         return UnitData.ALIGNMENT[index.column()]
 440                 elif role != QtCore.Qt.DisplayRole:
 441                         return None
 442
 443                 item = index.internalPointer()
 444                 if isinstance(item, UnitData):
 445                         return item.data(index.column())
 446                 elif item is UnitData.HEADERS:
 447                         return item[index.column()]
 448
 449         @misc_utils.log_exception(_moduleLogger)
 450         def sort(self, column, order = QtCore.Qt.AscendingOrder):
 451                 isReverse = order == QtCore.Qt.AscendingOrder
 452                 if column == 0:
 453                         key_func = lambda item: item.name
 454                 elif column in [1, 2]:
 455                         key_func = lambda item: item.value
 456                 elif column == 3:
 457                         key_func = lambda item: item.unit
 458                 self._children.sort(key=key_func, reverse = isReverse)
 459
 460                 self._all_changed()
 461
 462         @misc_utils.log_exception(_moduleLogger)
 463         def flags(self, index):
 464                 if not index.isValid():
 465                         return QtCore.Qt.NoItemFlags
 466
 467                 return QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable
 468
 469         @misc_utils.log_exception(_moduleLogger)
 470         def headerData(self, section, orientation, role):
 471                 if orientation == QtCore.Qt.Horizontal and role == QtCore.Qt.DisplayRole:
 472                         return UnitData.HEADERS[section]
 473
 474                 return None
 475
 476         @misc_utils.log_exception(_moduleLogger)
 477         def index(self, row, column, parent):
 478                 if not self.hasIndex(row, column, parent):
 479                         return QtCore.QModelIndex()
 480
 481                 if parent.isValid():
 482                         return QtCore.QModelIndex()
 483
 484                 parentItem = UnitData.HEADERS
 485                 childItem = self._children[row]
 486                 if childItem:
 487                         return self.createIndex(row, column, childItem)
 488                 else:
 489                         return QtCore.QModelIndex()
 490
 491         @misc_utils.log_exception(_moduleLogger)
 492         def parent(self, index):
 493                 if not index.isValid():
 494                         return QtCore.QModelIndex()
 495
 496                 childItem = index.internalPointer()
 497                 if isinstance(childItem, UnitData):
 498                         return QtCore.QModelIndex()
 499                 elif childItem is UnitData.HEADERS:
 500                         return None
 501
 502         @misc_utils.log_exception(_moduleLogger)
 503         def rowCount(self, parent):
 504                 if 0 < parent.column():
 505                         return 0
 506
 507                 if not parent.isValid():
 508                         return len(self._children)
 509                 else:
 510                         return len(self._children)
 511
 512         def get_unit(self, index):
 513                 return self._children[index]
 514
 515         def index_unit(self, unitName):
 516                 for i, child in enumerate(self._children):
 517                         if child.name == unitName:
 518                                 return i
 519                 else:
 520                         raise RuntimeError("Unit not found")
 521
 522         def update_values(self, fromIndex, userInput):
 523                 value = self._sanitize_value(userInput)
 524                 func, arg = self._children[fromIndex].conversion
 525                 base = func.to_base(value, arg)
 526                 for i, child in enumerate(self._children):
 527                         if i == fromIndex:
 528                                 continue
 529                         func, arg = child.conversion
 530                         newValue = func.from_base(base, arg)
 531                         child.update_value(newValue)
 532
 533                 self._all_changed()
 534
 535         def _all_changed(self):
 536                 topLeft = self.createIndex(0, 1, self._children[0])
 537                 bottomRight = self.createIndex(len(self._children)-1, 2, self._children[-1])
 538                 self.dataChanged.emit(topLeft, bottomRight)
 539
 540         def _sanitize_value(self, userEntry):
 541                 if self._categoryName == "Computer Numbers":
 542                         if userEntry == '':
 543                                 value = '0'
 544                         else:
 545                                 value = userEntry
 546                 else:
 547                         if userEntry == '':
 548                                 value = 0.0
 549                         else:
 550                                 value = float(userEntry)
 551                 return value
 552
 553
 554 class UnitWindow(object):
 555
 556         def __init__(self, parent, category, app):
 557                 self._app = app
 558                 self._categoryName = category
 559                 self._selectedIndex = 0
 560
 561                 self._selectedUnitName = QtGui.QLabel()
 562                 self._selectedUnitValue = QtGui.QLineEdit()
 563                 self._selectedUnitValue.textEdited.connect(self._on_value_edited)
 564                 self._selectedUnitSymbol = QtGui.QLabel()
 565
 566                 self._selectedUnitLayout = QtGui.QHBoxLayout()
 567                 self._selectedUnitLayout.addWidget(self._selectedUnitName)
 568                 self._selectedUnitLayout.addWidget(self._selectedUnitValue)
 569                 self._selectedUnitLayout.addWidget(self._selectedUnitSymbol)
 570
 571                 self._unitsModel = UnitModel(self._categoryName)
 572                 self._unitsView = QtGui.QTreeView()
 573                 self._unitsView.setModel(self._unitsModel)
 574                 self._unitsView.clicked.connect(self._on_unit_clicked)
 575                 self._unitsView.setUniformRowHeights(True)
 576                 self._unitsView.header().setSortIndicatorShown(True)
 577                 self._unitsView.header().setClickable(True)
 578                 self._unitsView.setSortingEnabled(True)
 579                 self._unitsView.setAlternatingRowColors(True)
 580                 if True:
 581                         self._unitsView.setHeaderHidden(True)
 582
 583                 self._layout = QtGui.QVBoxLayout()
 584                 self._layout.addLayout(self._selectedUnitLayout)
 585                 self._layout.addWidget(self._unitsView)
 586
 587                 centralWidget = QtGui.QWidget()
 588                 centralWidget.setLayout(self._layout)
 589
 590                 self._window = QtGui.QMainWindow(parent)
 591                 if parent is not None:
 592                         self._window.setWindowModality(QtCore.Qt.WindowModal)
 593                 self._window.setWindowTitle("%s - %s" % (constants.__pretty_app_name__, category))
 594                 self._window.setWindowIcon(QtGui.QIcon(app.appIconPath))
 595                 self._window.setCentralWidget(centralWidget)
 596
 597                 defaultUnitName = self._app.get_recent_unit(self._categoryName)
 598                 if defaultUnitName:
 599                         self.select_unit(defaultUnitName)
 600                 else:
 601                         self._select_unit(0)
 602                 self._unitsModel.sort(1)
 603
 604                 self._sortActionGroup = QtGui.QActionGroup(None)
 605                 self._sortByNameAction = QtGui.QAction(self._sortActionGroup)
 606                 self._sortByNameAction.setText("Sort By Name")
 607                 self._sortByNameAction.setStatusTip("Sort the units by name")
 608                 self._sortByNameAction.setToolTip("Sort the units by name")
 609                 self._sortByValueAction = QtGui.QAction(self._sortActionGroup)
 610                 self._sortByValueAction.setText("Sort By Value")
 611                 self._sortByValueAction.setStatusTip("Sort the units by value")
 612                 self._sortByValueAction.setToolTip("Sort the units by value")
 613                 self._sortByUnitAction = QtGui.QAction(self._sortActionGroup)
 614                 self._sortByUnitAction.setText("Sort By Unit")
 615                 self._sortByUnitAction.setStatusTip("Sort the units by unit")
 616                 self._sortByUnitAction.setToolTip("Sort the units by unit")
 617
 618                 self._sortByValueAction.setChecked(True)
 619
 620                 viewMenu = self._window.menuBar().addMenu("&View")
 621                 viewMenu.addAction(self._app.fullscreenAction)
 622                 viewMenu.addSeparator()
 623                 viewMenu.addAction(self._app.jumpAction)
 624                 viewMenu.addAction(self._app.recentAction)
 625                 viewMenu.addSeparator()
 626                 viewMenu.addAction(self._sortByNameAction)
 627                 viewMenu.addAction(self._sortByValueAction)
 628                 viewMenu.addAction(self._sortByUnitAction)
 629
 630                 self._sortByNameAction.triggered.connect(self._on_sort_by_name)
 631                 self._sortByValueAction.triggered.connect(self._on_sort_by_value)
 632                 self._sortByUnitAction.triggered.connect(self._on_sort_by_unit)
 633
 634                 self._window.show()
 635
 636         def close(self):
 637                 self._window.close()
 638
 639         def setFullscreen(self, isFullscreen):
 640                 if isFullscreen:
 641                         self._window.showFullScreen()
 642                 else:
 643                         self._window.showNormal()
 644
 645         def select_unit(self, unitName):
 646                 index = self._unitsModel.index_unit(unitName)
 647                 self._select_unit(index)
 648
 649         @misc_utils.log_exception(_moduleLogger)
 650         def _on_sort_by_name(self, checked = False):
 651                 self._unitsModel.sort(0, QtCore.Qt.DescendingOrder)
 652
 653         @misc_utils.log_exception(_moduleLogger)
 654         def _on_sort_by_value(self, checked = False):
 655                 self._unitsModel.sort(1)
 656
 657         @misc_utils.log_exception(_moduleLogger)
 658         def _on_sort_by_unit(self, checked = False):
 659                 self._unitsModel.sort(3, QtCore.Qt.DescendingOrder)
 660
 661         @misc_utils.log_exception(_moduleLogger)
 662         def _on_unit_clicked(self, index):
 663                 self._select_unit(index.row())
 664
 665         @misc_utils.log_exception(_moduleLogger)
 666         def _on_value_edited(self, *args):
 667                 userInput = self._selectedUnitValue.text()
 668                 self._unitsModel.update_values(self._selectedIndex, str(userInput))
 669
 670         def _select_unit(self, index):
 671                 unit = self._unitsModel.get_unit(index)
 672                 self._selectedUnitName.setText(unit.name)
 673                 self._selectedUnitValue.setText(str(unit.value))
 674                 self._selectedUnitSymbol.setText(unit.unit)
 675
 676                 self._selectedIndex = index
 677                 qindex = self._unitsModel.createIndex(index, 0, self._unitsModel.get_unit(index))
 678                 self._unitsView.scrollTo(qindex)
 679                 self._app.add_recent(self._categoryName, self._unitsModel.get_unit(index).name)
 680
 681
 682 def run_gonvert():
 683         app = QtGui.QApplication([])
 684         handle = Gonvert()
 685         return app.exec_()
 686
 687
 688 if __name__ == "__main__":
 689         logging.basicConfig(level = logging.DEBUG)
 690         try:
 691                 os.makedirs(constants._data_path_)
 692         except OSError, e:
 693                 if e.errno != 17:
 694                         raise
 695
 696         val = run_gonvert()
 697         sys.exit(val)