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

   1 #!/usr/bin/env python
   2 # -*- coding: UTF8 -*-
   3
   4 #@todo Research Fn
   5 #@todo Research optimizations
   6
   7 from __future__ import with_statement
   8
   9 import os
  10 import math
  11 import simplejson
  12 import logging
  13 import logging.handlers
  14
  15 import util.qt_compat as qt_compat
  16 QtCore = qt_compat.QtCore
  17 QtGui = qt_compat.import_module("QtGui")
  18
  19 import constants
  20 from util import qui_utils
  21 from util import misc as misc_utils
  22 import unit_data
  23
  24
  25 _moduleLogger = logging.getLogger(__name__)
  26
  27
  28 def split_number(number):
  29         if number == 0.0:
  30                 # Optimize the startup case
  31                 return "0.", "0"
  32
  33         try:
  34                 fractional, integer = math.modf(number)
  35         except TypeError:
  36                 integerDisplay = number
  37                 fractionalDisplay = ""
  38         else:
  39                 integerDisplay = str(integer)
  40                 fractionalDisplay = str(fractional)
  41                 if "e+" in integerDisplay:
  42                         integerDisplay = number
  43                         fractionalDisplay = ""
  44                 elif "e-" in fractionalDisplay:
  45                         if 0.0 < integer:
  46                                 integerDisplay = number
  47                                 fractionalDisplay = ""
  48                         else:
  49                                 integerDisplay = ""
  50                                 fractionalDisplay = number
  51                 else:
  52                         integerDisplay = integerDisplay[0:-2] + "."
  53                         fractionalDisplay = fractionalDisplay[2:]
  54
  55         return integerDisplay, fractionalDisplay
  56
  57
  58 class Gonvert(object):
  59
  60         _DATA_PATHS = [
  61                 os.path.dirname(__file__),
  62                 os.path.join(os.path.dirname(__file__), "../share"),
  63                 os.path.join(os.path.dirname(__file__), "../data"),
  64                 '/usr/share/gonvert',
  65                 '/opt/gonvert/share',
  66         ]
  67
  68         def __init__(self, app):
  69                 self._dataPath = ""
  70                 self._app = app
  71                 self._appIconPath = ""
  72                 self._recent = []
  73                 self._hiddenCategories = set()
  74                 self._hiddenUnits = {}
  75                 self._clipboard = QtGui.QApplication.clipboard()
  76
  77                 self._jumpWindow = None
  78                 self._recentWindow = None
  79                 self._mainWindow = None
  80                 self._catWindow = None
  81                 self._quickWindow = None
  82
  83                 self._on_jump_close = lambda obj = None: self._on_child_close("_jumpWindow", obj)
  84                 self._on_recent_close = lambda obj = None: self._on_child_close("_recentWindow", obj)
  85                 self._on_cat_close = lambda obj = None: self._on_child_close("_catWindow", obj)
  86                 self._on_quick_close = lambda obj = None: self._on_child_close("_quickWindow", obj)
  87
  88                 self._condensedAction = QtGui.QAction(None)
  89                 self._condensedAction.setText("Condensed View")
  90                 self._condensedAction.setCheckable(True)
  91                 self._condensedAction.triggered.connect(self._on_condensed_start)
  92
  93                 self._jumpAction = QtGui.QAction(None)
  94                 self._jumpAction.setText("Quick Jump")
  95                 self._jumpAction.setStatusTip("Search for a unit and jump straight to it")
  96                 self._jumpAction.setToolTip("Search for a unit and jump straight to it")
  97                 self._jumpAction.setShortcut(QtGui.QKeySequence("CTRL+j"))
  98                 self._jumpAction.triggered.connect(self._on_jump_start)
  99
 100                 self._recentAction = QtGui.QAction(None)
 101                 self._recentAction.setText("Recent Units")
 102                 self._recentAction.setStatusTip("View the recent units")
 103                 self._recentAction.setToolTip("View the recent units")
 104                 self._recentAction.setShortcut(QtGui.QKeySequence("CTRL+r"))
 105                 self._recentAction.triggered.connect(self._on_recent_start)
 106
 107                 self._fullscreenAction = QtGui.QAction(None)
 108                 self._fullscreenAction.setText("Fullscreen")
 109                 self._fullscreenAction.setCheckable(True)
 110                 self._fullscreenAction.setShortcut(QtGui.QKeySequence("CTRL+Enter"))
 111                 self._fullscreenAction.toggled.connect(self._on_toggle_fullscreen)
 112
 113                 self._showFavoritesAction = QtGui.QAction(None)
 114                 self._showFavoritesAction.setCheckable(True)
 115                 self._showFavoritesAction.setText("Favorites Only")
 116
 117                 self._sortActionGroup = QtGui.QActionGroup(None)
 118                 self._sortByNameAction = QtGui.QAction(self._sortActionGroup)
 119                 self._sortByNameAction.setText("Sort By Name")
 120                 self._sortByNameAction.setStatusTip("Sort the units by name")
 121                 self._sortByNameAction.setToolTip("Sort the units by name")
 122                 self._sortByNameAction.setCheckable(True)
 123                 self._sortByValueAction = QtGui.QAction(self._sortActionGroup)
 124                 self._sortByValueAction.setText("Sort By Value")
 125                 self._sortByValueAction.setStatusTip("Sort the units by value")
 126                 self._sortByValueAction.setToolTip("Sort the units by value")
 127                 self._sortByValueAction.setCheckable(True)
 128                 self._sortByUnitAction = QtGui.QAction(self._sortActionGroup)
 129                 self._sortByUnitAction.setText("Sort By Unit")
 130                 self._sortByUnitAction.setStatusTip("Sort the units by unit")
 131                 self._sortByUnitAction.setToolTip("Sort the units by unit")
 132                 self._sortByUnitAction.setCheckable(True)
 133
 134                 self._sortByNameAction.setChecked(True)
 135
 136                 self._logAction = QtGui.QAction(None)
 137                 self._logAction.setText("Log")
 138                 self._logAction.setShortcut(QtGui.QKeySequence("CTRL+l"))
 139                 self._logAction.triggered.connect(self._on_log)
 140
 141                 self._quitAction = QtGui.QAction(None)
 142                 self._quitAction.setText("Quit")
 143                 self._quitAction.setShortcut(QtGui.QKeySequence("CTRL+q"))
 144                 self._quitAction.triggered.connect(self._on_quit)
 145
 146                 self._app.lastWindowClosed.connect(self._on_app_quit)
 147                 self.load_settings()
 148
 149                 self.request_category()
 150                 if self._recent:
 151                         self._mainWindow.select_category(self._recent[-1][0])
 152
 153         def request_category(self):
 154                 if self._condensedAction.isChecked():
 155                         if self._catWindow is not None:
 156                                 self._catWindow.hide()
 157
 158                         if self._quickWindow is None:
 159                                 self._quickWindow = QuickConvert(None, self)
 160                                 self._quickWindow.window.destroyed.connect(self._on_quick_close)
 161                         else:
 162                                 self._quickWindow.show()
 163
 164                         self._mainWindow = self._quickWindow
 165                 else:
 166                         if self._quickWindow is not None:
 167                                 self._quickWindow.hide()
 168
 169                         if self._catWindow is None:
 170                                 self._catWindow = CategoryWindow(None, self)
 171                                 self._catWindow.window.destroyed.connect(self._on_cat_close)
 172                         else:
 173                                 self._catWindow.window.show()
 174
 175                         self._mainWindow = self._catWindow
 176
 177                 return self._mainWindow
 178
 179         def search_units(self):
 180                 import windows
 181                 jumpWindow = windows.QuickJump(None, self)
 182                 jumpWindow.window.destroyed.connect(self._on_jump_close)
 183                 self._jumpWindow = jumpWindow
 184                 return self._jumpWindow
 185
 186         def show_recent(self):
 187                 import windows
 188                 recentWindow = windows.Recent(None, self)
 189                 recentWindow.window.destroyed.connect(self._on_recent_close)
 190                 self._recentWindow = recentWindow
 191                 return self._recentWindow
 192
 193         def add_recent(self, categoryName, unitName):
 194                 catUnit = categoryName, unitName
 195                 try:
 196                         self._recent.remove(catUnit)
 197                 except ValueError:
 198                         pass # ignore if its not already in the recent history
 199                 assert catUnit not in self._recent
 200                 self._recent.append(catUnit)
 201
 202         def get_recent_unit(self, categoryName, fromMostRecent = 0):
 203                 recentUnitName = ""
 204                 for catName, unitName in reversed(self._recent):
 205                         if catName == categoryName:
 206                                 recentUnitName = unitName
 207                                 if fromMostRecent <= 0:
 208                                         break
 209                                 else:
 210                                         fromMostRecent -= 1
 211                 return recentUnitName
 212
 213         def get_recent(self):
 214                 return reversed(self._recent)
 215
 216         @property
 217         def hiddenCategories(self):
 218                 return self._hiddenCategories
 219
 220         def get_hidden_units(self, categoryName):
 221                 try:
 222                         return self._hiddenUnits[categoryName]
 223                 except KeyError:
 224                         self._hiddenUnits[categoryName] = set()
 225                         return self._hiddenUnits[categoryName]
 226
 227         def load_settings(self):
 228                 try:
 229                         with open(constants._user_settings_, "r") as settingsFile:
 230                                 settings = simplejson.load(settingsFile)
 231                 except IOError, e:
 232                         _moduleLogger.info("No settings")
 233                         settings = {}
 234                 except ValueError:
 235                         _moduleLogger.info("Settings were corrupt")
 236                         settings = {}
 237
 238                 self._fullscreenAction.setChecked(settings.get("isFullScreen", False))
 239
 240                 sortBy = settings.get("sortBy", "name")
 241                 if sortBy not in ["name", "value", "unit"]:
 242                         _moduleLogger.info("Setting sortBy is not a valid value: %s" % sortBy)
 243                         sortBy = "name"
 244                 if sortBy == "name":
 245                         self._sortByNameAction.setChecked(True)
 246                         self._sortByValueAction.setChecked(False)
 247                         self._sortByUnitAction.setChecked(False)
 248                 elif sortBy == "value":
 249                         self._sortByNameAction.setChecked(False)
 250                         self._sortByValueAction.setChecked(True)
 251                         self._sortByUnitAction.setChecked(False)
 252                 elif sortBy == "unit":
 253                         self._sortByNameAction.setChecked(False)
 254                         self._sortByValueAction.setChecked(False)
 255                         self._sortByUnitAction.setChecked(True)
 256                 else:
 257                         raise RuntimeError("How did this sortBy come about? %s" % sortBy)
 258
 259                 recent = settings.get("recent", self._recent)
 260                 for category, unit in recent:
 261                         self.add_recent(category, unit)
 262
 263                 self._hiddenCategories = set(settings.get("hiddenCategories", set()))
 264                 self._hiddenUnits = dict(
 265                         (catName, set(units))
 266                         for (catName, units) in settings.get("hiddenUnits", {}).iteritems()
 267                 )
 268
 269                 self._showFavoritesAction.setChecked(settings.get("showFavorites", True))
 270
 271                 self._condensedAction.setChecked(settings.get("useQuick", True))
 272
 273         def save_settings(self):
 274                 if self._sortByNameAction.isChecked():
 275                         sortBy = "name"
 276                 elif self._sortByValueAction.isChecked():
 277                         sortBy = "value"
 278                 elif self._sortByUnitAction.isChecked():
 279                         sortBy = "unit"
 280                 else:
 281                         raise RuntimeError("Unknown sorting value")
 282                 settings = {
 283                         "isFullScreen": self._fullscreenAction.isChecked(),
 284                         "recent": self._recent,
 285                         "hiddenCategories": list(self._hiddenCategories),
 286                         "hiddenUnits": dict(
 287                                 (catName, list(units))
 288                                 for (catName, units) in self._hiddenUnits.iteritems()
 289                         ),
 290                         "showFavorites": self._showFavoritesAction.isChecked(),
 291                         "useQuick": self._condensedAction.isChecked(),
 292                         "sortBy": sortBy,
 293                 }
 294                 with open(constants._user_settings_, "w") as settingsFile:
 295                         simplejson.dump(settings, settingsFile)
 296
 297         @property
 298         def appIconPath(self):
 299                 return self._appIconPath
 300
 301         @property
 302         def jumpAction(self):
 303                 return self._jumpAction
 304
 305         @property
 306         def recentAction(self):
 307                 return self._recentAction
 308
 309         @property
 310         def fullscreenAction(self):
 311                 return self._fullscreenAction
 312
 313         @property
 314         def condensedAction(self):
 315                 return self._condensedAction
 316
 317         @property
 318         def sortByNameAction(self):
 319                 return self._sortByNameAction
 320
 321         @property
 322         def sortByValueAction(self):
 323                 return self._sortByValueAction
 324
 325         @property
 326         def sortByUnitAction(self):
 327                 return self._sortByUnitAction
 328
 329         @property
 330         def logAction(self):
 331                 return self._logAction
 332
 333         @property
 334         def quitAction(self):
 335                 return self._quitAction
 336
 337         @property
 338         def showFavoritesAction(self):
 339                 return self._showFavoritesAction
 340
 341         def _walk_children(self):
 342                 if self._catWindow is not None:
 343                         yield self._catWindow
 344                 if self._quickWindow is not None:
 345                         yield self._quickWindow
 346                 if self._jumpWindow is not None:
 347                         yield self._jumpWindow
 348                 if self._recentWindow is not None:
 349                         yield self._recentWindow
 350
 351         def _close_windows(self):
 352                 if self._catWindow is not None:
 353                         self._catWindow.window.destroyed.disconnect(self._on_cat_close)
 354                         self._catWindow.close()
 355                         self._catWindow = None
 356                 if self._quickWindow is not None:
 357                         self._quickWindow.window.destroyed.disconnect(self._on_quick_close)
 358                         self._quickWindow.close()
 359                         self._quickWindow = None
 360                 if self._jumpWindow is not None:
 361                         self._jumpWindow.window.destroyed.disconnect(self._on_jump_close)
 362                         self._jumpWindow.close()
 363                         self._jumpWindow = None
 364                 if self._recentWindow is not None:
 365                         self._recentWindow.window.destroyed.disconnect(self._on_recent_close)
 366                         self._recentWindow.close()
 367                         self._recentWindow = None
 368
 369         @misc_utils.log_exception(_moduleLogger)
 370         def _on_app_quit(self, checked = False):
 371                 self.save_settings()
 372
 373         @misc_utils.log_exception(_moduleLogger)
 374         def _on_child_close(self, name, obj = None):
 375                 if not hasattr(self, name):
 376                         _moduleLogger.info("Something weird going on when we don't have a %s" % name)
 377                         return
 378                 setattr(self, name, None)
 379
 380         @misc_utils.log_exception(_moduleLogger)
 381         def _on_toggle_fullscreen(self, checked = False):
 382                 for window in self._walk_children():
 383                         window.set_fullscreen(checked)
 384
 385         @misc_utils.log_exception(_moduleLogger)
 386         def _on_condensed_start(self, checked = False):
 387                 self.request_category()
 388                 if self._recent:
 389                         self._mainWindow.select_category(self._recent[-1][0])
 390
 391         @misc_utils.log_exception(_moduleLogger)
 392         def _on_jump_start(self, checked = False):
 393                 self.search_units()
 394
 395         @misc_utils.log_exception(_moduleLogger)
 396         def _on_recent_start(self, checked = False):
 397                 self.show_recent()
 398
 399         @misc_utils.log_exception(_moduleLogger)
 400         def _on_log(self, checked = False):
 401                 with open(constants._user_logpath_, "r") as f:
 402                         logLines = f.xreadlines()
 403                         log = "".join(logLines)
 404                         self._clipboard.setText(log)
 405
 406         @misc_utils.log_exception(_moduleLogger)
 407         def _on_quit(self, checked = False):
 408                 self._close_windows()
 409
 410
 411 class QuickConvert(object):
 412
 413         def __init__(self, parent, app):
 414                 self._app = app
 415                 self._categoryName = ""
 416                 self._inputUnitName = ""
 417                 self._outputUnitName = ""
 418                 self._unitNames = []
 419                 self._favoritesWindow = None
 420
 421                 self._inputUnitValue = QtGui.QLineEdit()
 422                 qui_utils.mark_numbers_preferred(self._inputUnitValue)
 423                 self._inputUnitValue.textEdited.connect(self._on_value_edited)
 424                 self._inputUnitSymbol = QtGui.QLabel()
 425
 426                 self._outputUnitValue = QtGui.QLineEdit()
 427                 qui_utils.mark_numbers_preferred(self._outputUnitValue)
 428                 self._outputUnitValue.textEdited.connect(self._on_output_value_edited)
 429                 self._outputUnitSymbol = QtGui.QLabel()
 430
 431                 self._conversionLayout = QtGui.QHBoxLayout()
 432                 self._conversionLayout.addWidget(self._inputUnitValue)
 433                 self._conversionLayout.addWidget(self._inputUnitSymbol)
 434                 self._conversionLayout.addWidget(self._outputUnitValue)
 435                 self._conversionLayout.addWidget(self._outputUnitSymbol)
 436
 437                 self._categoryView = QtGui.QTreeWidget()
 438                 self._categoryView.setHeaderLabels(["Categories"])
 439                 self._categoryView.setHeaderHidden(False)
 440                 self._categoryView.setRootIsDecorated(False)
 441                 if not constants.IS_MAEMO:
 442                         self._categoryView.setAlternatingRowColors(True)
 443                 self._categoryView.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
 444                 self._categoryView.setSelectionMode(QtGui.QAbstractItemView.SingleSelection)
 445                 for catName in unit_data.UNIT_CATEGORIES:
 446                         twi = QtGui.QTreeWidgetItem(self._categoryView)
 447                         twi.setText(0, catName)
 448                 self._categorySelection = self._categoryView.selectionModel()
 449                 self._categorySelection.selectionChanged.connect(self._on_category_selection_changed)
 450
 451                 self._inputView = QtGui.QTreeWidget()
 452                 self._inputView.setHeaderLabels(["From", "Name"])
 453                 self._inputView.setHeaderHidden(False)
 454                 self._inputView.header().hideSection(1)
 455                 self._inputView.setRootIsDecorated(False)
 456                 if not constants.IS_MAEMO:
 457                         self._inputView.setAlternatingRowColors(True)
 458                 self._inputView.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
 459                 self._inputView.setSelectionMode(QtGui.QAbstractItemView.SingleSelection)
 460                 self._inputSelection = self._inputView.selectionModel()
 461                 self._inputSelection.selectionChanged.connect(self._on_input_selection_changed)
 462
 463                 self._outputView = QtGui.QTreeWidget()
 464                 self._outputView.setHeaderLabels(["To", "Name"])
 465                 self._outputView.setHeaderHidden(False)
 466                 self._outputView.header().hideSection(1)
 467                 self._outputView.setRootIsDecorated(False)
 468                 if not constants.IS_MAEMO:
 469                         self._outputView.setAlternatingRowColors(True)
 470                 self._outputView.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
 471                 self._outputView.setSelectionMode(QtGui.QAbstractItemView.SingleSelection)
 472                 self._outputWidgets = []
 473                 self._outputSelection = self._outputView.selectionModel()
 474                 self._outputSelection.selectionChanged.connect(self._on_output_selection_changed)
 475
 476                 self._selectionLayout = QtGui.QHBoxLayout()
 477                 self._selectionLayout.addWidget(self._categoryView)
 478                 self._selectionLayout.addWidget(self._inputView)
 479                 self._selectionLayout.addWidget(self._outputView)
 480
 481                 self._layout = QtGui.QVBoxLayout()
 482                 self._layout.addLayout(self._conversionLayout)
 483                 self._layout.addLayout(self._selectionLayout)
 484
 485                 centralWidget = QtGui.QWidget()
 486                 centralWidget.setLayout(self._layout)
 487
 488                 self._window = QtGui.QMainWindow(parent)
 489                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 490                 qui_utils.set_stackable(self._window, True)
 491                 self._window.setWindowTitle("%s - Quick Convert" % (constants.__pretty_app_name__, ))
 492                 self._window.setWindowIcon(QtGui.QIcon(app.appIconPath))
 493                 self._window.setCentralWidget(centralWidget)
 494
 495                 self._chooseCatFavoritesAction = QtGui.QAction(None)
 496                 self._chooseCatFavoritesAction.setText("Select Categories")
 497                 self._chooseCatFavoritesAction.triggered.connect(self._on_choose_category_favorites)
 498
 499                 self._chooseUnitFavoritesAction = QtGui.QAction(None)
 500                 self._chooseUnitFavoritesAction.setText("Select Units")
 501                 self._chooseUnitFavoritesAction.triggered.connect(self._on_choose_unit_favorites)
 502                 self._chooseUnitFavoritesAction.setEnabled(False)
 503
 504                 self._app.showFavoritesAction.toggled.connect(self._on_show_favorites)
 505
 506                 self._closeWindowAction = QtGui.QAction(None)
 507                 self._closeWindowAction.setText("Close Window")
 508                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 509                 self._closeWindowAction.triggered.connect(self._on_close_window)
 510
 511                 if constants.IS_MAEMO:
 512                         self._window.addAction(self._closeWindowAction)
 513                         self._window.addAction(self._app.quitAction)
 514                         self._window.addAction(self._app.fullscreenAction)
 515
 516                         fileMenu = self._window.menuBar().addMenu("&Units")
 517                         fileMenu.addAction(self._chooseCatFavoritesAction)
 518                         fileMenu.addAction(self._chooseUnitFavoritesAction)
 519
 520                         viewMenu = self._window.menuBar().addMenu("&View")
 521                         viewMenu.addAction(self._app.showFavoritesAction)
 522                         viewMenu.addAction(self._app.condensedAction)
 523                         viewMenu.addSeparator()
 524                         viewMenu.addAction(self._app.jumpAction)
 525                         viewMenu.addAction(self._app.recentAction)
 526                 else:
 527                         fileMenu = self._window.menuBar().addMenu("&Units")
 528                         fileMenu.addAction(self._chooseCatFavoritesAction)
 529                         fileMenu.addAction(self._chooseUnitFavoritesAction)
 530                         fileMenu.addAction(self._closeWindowAction)
 531                         fileMenu.addAction(self._app.quitAction)
 532
 533                         viewMenu = self._window.menuBar().addMenu("&View")
 534                         viewMenu.addAction(self._app.showFavoritesAction)
 535                         viewMenu.addAction(self._app.condensedAction)
 536                         viewMenu.addSeparator()
 537                         viewMenu.addAction(self._app.jumpAction)
 538                         viewMenu.addAction(self._app.recentAction)
 539                         viewMenu.addSeparator()
 540                         viewMenu.addAction(self._app.fullscreenAction)
 541
 542                 self._window.addAction(self._app.logAction)
 543
 544                 self._update_favorites()
 545                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
 546                 self._window.show()
 547
 548         @property
 549         def window(self):
 550                 return self._window
 551
 552         def show(self):
 553                 self._window.show()
 554
 555         def hide(self):
 556                 self._window.hide()
 557
 558         def close(self):
 559                 self._window.close()
 560
 561         def set_fullscreen(self, isFullscreen):
 562                 if isFullscreen:
 563                         self._window.showFullScreen()
 564                 else:
 565                         self._window.showNormal()
 566
 567         def select_category(self, categoryName):
 568                 self._select_category(categoryName)
 569
 570                 i = unit_data.UNIT_CATEGORIES.index(categoryName)
 571                 rootIndex = self._categoryView.rootIndex()
 572                 currentIndex = self._categoryView.model().index(i, 0, rootIndex)
 573                 self._categoryView.scrollTo(currentIndex)
 574                 self._categoryView.setItemSelected(self._categoryView.topLevelItem(i), True)
 575
 576                 return self
 577
 578         def select_unit(self, name):
 579                 self.select_input(name)
 580                 return self
 581
 582         def select_input(self, name):
 583                 self._select_input(name)
 584
 585                 i = self._unitNames.index(name)
 586                 rootIndex = self._inputView.rootIndex()
 587                 currentIndex = self._inputView.model().index(i, 0, rootIndex)
 588                 self._inputView.scrollTo(currentIndex)
 589                 self._inputView.setItemSelected(self._inputView.topLevelItem(i), True)
 590
 591         def select_output(self, name):
 592                 self._select_output(name)
 593
 594                 i = self._unitNames.index(name)
 595                 rootIndex = self._outputView.rootIndex()
 596                 currentIndex = self._outputView.model().index(i, 0, rootIndex)
 597                 self._outputView.scrollTo(currentIndex)
 598                 self._outputView.setItemSelected(self._outputView.topLevelItem(i), True)
 599
 600         def _select_category(self, categoryName):
 601                 self._inputUnitName = ""
 602                 self._outputUnitName = ""
 603                 self._inputUnitValue.setText("")
 604                 self._inputUnitSymbol.setText("")
 605                 self._inputView.clear()
 606                 self._outputUnitValue.setText("")
 607                 self._outputUnitSymbol.setText("")
 608                 self._outputView.clear()
 609                 self._categoryName = categoryName
 610                 self._chooseUnitFavoritesAction.setEnabled(True)
 611
 612                 unitData = unit_data.UNIT_DESCRIPTIONS[categoryName]
 613                 self._unitNames = list(unit_data.get_units(categoryName))
 614                 self._unitNames.sort()
 615                 for key in self._unitNames:
 616                         conversion, unit, description = unitData[key]
 617                         unit = key
 618
 619                         twi = QtGui.QTreeWidgetItem(self._inputView)
 620                         twi.setText(0, unit)
 621                         twi.setText(1, key)
 622
 623                         twi = QtGui.QTreeWidgetItem(self._outputView)
 624                         twi.setText(0, unit)
 625                         twi.setText(1, key)
 626
 627                 defaultInputUnitName = self._app.get_recent_unit(categoryName)
 628                 if defaultInputUnitName:
 629                         self.select_input(defaultInputUnitName)
 630                         defaultOutputUnitName = self._app.get_recent_unit(categoryName, 1)
 631                         assert defaultOutputUnitName
 632                         self.select_output(defaultOutputUnitName)
 633
 634         def _select_input(self, name):
 635                 self._app.add_recent(self._categoryName, name)
 636                 self._inputUnitName = name
 637
 638                 unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
 639                 conversion, unit, description = unitData[name]
 640
 641                 self._inputUnitSymbol.setText(unit if unit else name)
 642
 643                 if "" not in [self._categoryName, self._inputUnitName, self._outputUnitName]:
 644                         self._update_output()
 645
 646         def _select_output(self, name):
 647                 # Add the output to recent but don't make things weird by making it the most recent
 648                 self._app.add_recent(self._categoryName, name)
 649                 self._app.add_recent(self._categoryName, self._inputUnitName)
 650                 self._outputUnitName = name
 651
 652                 unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
 653                 conversion, unit, description = unitData[name]
 654
 655                 self._outputUnitSymbol.setText(unit if unit else name)
 656
 657                 if "" not in [self._categoryName, self._inputUnitName, self._outputUnitName]:
 658                         self._update_output()
 659
 660         def _sanitize_value(self, userEntry):
 661                 if self._categoryName == "Computer Numbers":
 662                         if userEntry == '':
 663                                 value = '0'
 664                         else:
 665                                 value = userEntry
 666                 else:
 667                         if userEntry == '':
 668                                 value = 0.0
 669                         else:
 670                                 value = float(userEntry)
 671                 return value
 672
 673         def _update_output(self):
 674                 assert self._categoryName
 675                 assert self._inputUnitName
 676                 assert self._outputUnitName
 677
 678                 userInput = str(self._inputUnitValue.text())
 679                 value = self._sanitize_value(userInput)
 680
 681                 unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
 682                 inputConversion, _, _ = unitData[self._inputUnitName]
 683                 outputConversion, _, _ = unitData[self._outputUnitName]
 684
 685                 func, arg = inputConversion
 686                 base = func.to_base(value, arg)
 687
 688                 func, arg = outputConversion
 689                 newValue = func.from_base(base, arg)
 690                 self._outputUnitValue.setText(str(newValue))
 691
 692         def _update_input(self):
 693                 assert self._categoryName
 694                 assert self._inputUnitName
 695                 assert self._outputUnitName
 696
 697                 userOutput = str(self._outputUnitValue.text())
 698                 value = self._sanitize_value(userOutput)
 699
 700                 unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
 701                 inputConversion, _, _ = unitData[self._inputUnitName]
 702                 outputConversion, _, _ = unitData[self._outputUnitName]
 703
 704                 func, arg = outputConversion
 705                 base = func.to_base(value, arg)
 706
 707                 func, arg = inputConversion
 708                 newValue = func.from_base(base, arg)
 709                 self._inputUnitValue.setText(str(newValue))
 710
 711         def _update_favorites(self):
 712                 if self._app.showFavoritesAction.isChecked():
 713                         assert self._categoryView.topLevelItemCount() == len(unit_data.UNIT_CATEGORIES)
 714                         for i, catName in enumerate(unit_data.UNIT_CATEGORIES):
 715                                 if catName in self._app.hiddenCategories:
 716                                         self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), True)
 717                                 else:
 718                                         self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), False)
 719
 720                         for i, unitName in enumerate(self._unitNames):
 721                                 if unitName in self._app.get_hidden_units(self._categoryName):
 722                                         self._inputView.setRowHidden(i, self._inputView.rootIndex(), True)
 723                                         self._outputView.setRowHidden(i, self._outputView.rootIndex(), True)
 724                                 else:
 725                                         self._inputView.setRowHidden(i, self._inputView.rootIndex(), False)
 726                                         self._outputView.setRowHidden(i, self._outputView.rootIndex(), False)
 727                 else:
 728                         for i in xrange(self._categoryView.topLevelItemCount()):
 729                                 self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), False)
 730
 731                         for i in xrange(len(self._unitNames)):
 732                                 self._inputView.setRowHidden(i, self._inputView.rootIndex(), False)
 733                                 self._outputView.setRowHidden(i, self._outputView.rootIndex(), False)
 734
 735         @misc_utils.log_exception(_moduleLogger)
 736         def _on_close_window(self, checked = True):
 737                 self.close()
 738
 739         @misc_utils.log_exception(_moduleLogger)
 740         def _on_show_favorites(self, checked = True):
 741                 if checked:
 742                         assert self._categoryView.topLevelItemCount() == len(unit_data.UNIT_CATEGORIES)
 743                         for i, catName in enumerate(unit_data.UNIT_CATEGORIES):
 744                                 if catName in self._app.hiddenCategories:
 745                                         self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), True)
 746
 747                         for i, unitName in enumerate(self._unitNames):
 748                                 if unitName in self._app.get_hidden_units(self._categoryName):
 749                                         self._inputView.setRowHidden(i, self._inputView.rootIndex(), True)
 750                                         self._outputView.setRowHidden(i, self._outputView.rootIndex(), True)
 751                 else:
 752                         for i in xrange(self._categoryView.topLevelItemCount()):
 753                                 self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), False)
 754
 755                         for i in xrange(len(self._unitNames)):
 756                                 self._inputView.setRowHidden(i, self._inputView.rootIndex(), False)
 757                                 self._outputView.setRowHidden(i, self._outputView.rootIndex(), False)
 758
 759         @misc_utils.log_exception(_moduleLogger)
 760         def _on_choose_category_favorites(self, obj = None):
 761                 assert self._favoritesWindow is None
 762                 import windows
 763                 self._favoritesWindow = windows.FavoritesWindow(
 764                         self._window,
 765                         self._app,
 766                         unit_data.UNIT_CATEGORIES,
 767                         self._app.hiddenCategories
 768                 )
 769                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
 770                 return self._favoritesWindow
 771
 772         @misc_utils.log_exception(_moduleLogger)
 773         def _on_choose_unit_favorites(self, obj = None):
 774                 assert self._favoritesWindow is None
 775                 import windows
 776                 self._favoritesWindow = windows.FavoritesWindow(
 777                         self._window,
 778                         self._app,
 779                         unit_data.get_units(self._categoryName),
 780                         self._app.get_hidden_units(self._categoryName)
 781                 )
 782                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
 783                 return self._favoritesWindow
 784
 785         @misc_utils.log_exception(_moduleLogger)
 786         def _on_close_favorites(self, obj = None):
 787                 self._favoritesWindow = None
 788                 self._update_favorites()
 789
 790         @misc_utils.log_exception(_moduleLogger)
 791         def _on_value_edited(self, *args):
 792                 self._update_output()
 793
 794         @misc_utils.log_exception(_moduleLogger)
 795         def _on_output_value_edited(self, *args):
 796                 self._update_input()
 797
 798         @misc_utils.log_exception(_moduleLogger)
 799         def _on_category_selection_changed(self, selected, deselected):
 800                 selectedNames = [
 801                         str(item.text(0))
 802                         for item in self._categoryView.selectedItems()
 803                 ]
 804                 assert len(selectedNames) == 1
 805                 self._select_category(selectedNames[0])
 806
 807         @misc_utils.log_exception(_moduleLogger)
 808         def _on_input_selection_changed(self, selected, deselected):
 809                 selectedNames = [
 810                         str(item.text(1))
 811                         for item in self._inputView.selectedItems()
 812                 ]
 813                 if selectedNames:
 814                         assert len(selectedNames) == 1
 815                         name = selectedNames[0]
 816                         self._select_input(name)
 817                 else:
 818                         pass
 819
 820         @misc_utils.log_exception(_moduleLogger)
 821         def _on_output_selection_changed(self, selected, deselected):
 822                 selectedNames = [
 823                         str(item.text(1))
 824                         for item in self._outputView.selectedItems()
 825                 ]
 826                 if selectedNames:
 827                         assert len(selectedNames) == 1, selectedNames
 828                         name = selectedNames[0]
 829                         self._select_output(name)
 830                 else:
 831                         pass
 832
 833
 834 class CategoryWindow(object):
 835
 836         def __init__(self, parent, app):
 837                 self._app = app
 838                 self._unitWindow = None
 839                 self._favoritesWindow = None
 840
 841                 self._categories = QtGui.QTreeWidget()
 842                 self._categories.setHeaderLabels(["Categories"])
 843                 self._categories.itemClicked.connect(self._on_category_clicked)
 844                 self._categories.setHeaderHidden(True)
 845                 self._categories.setRootIsDecorated(False)
 846                 self._categories.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
 847                 self._categories.setSelectionMode(QtGui.QAbstractItemView.SingleSelection)
 848                 if not constants.IS_MAEMO:
 849                         self._categories.setAlternatingRowColors(True)
 850                 for catName in unit_data.UNIT_CATEGORIES:
 851                         twi = QtGui.QTreeWidgetItem(self._categories)
 852                         twi.setText(0, catName)
 853
 854                 self._layout = QtGui.QVBoxLayout()
 855                 self._layout.addWidget(self._categories)
 856
 857                 centralWidget = QtGui.QWidget()
 858                 centralWidget.setLayout(self._layout)
 859
 860                 self._window = QtGui.QMainWindow(parent)
 861                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 862                 qui_utils.set_stackable(self._window, True)
 863                 self._window.setWindowTitle("%s - Categories" % constants.__pretty_app_name__)
 864                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 865                 self._window.setCentralWidget(centralWidget)
 866
 867                 self._chooseFavoritesAction = QtGui.QAction(None)
 868                 self._chooseFavoritesAction.setText("Select Favorites")
 869                 self._chooseFavoritesAction.setShortcut(QtGui.QKeySequence("CTRL+f"))
 870                 self._chooseFavoritesAction.triggered.connect(self._on_choose_favorites)
 871
 872                 self._app.showFavoritesAction.toggled.connect(self._on_show_favorites)
 873
 874                 self._closeWindowAction = QtGui.QAction(None)
 875                 self._closeWindowAction.setText("Close")
 876                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 877                 self._closeWindowAction.triggered.connect(self._on_close_window)
 878
 879                 if constants.IS_MAEMO:
 880                         fileMenu = self._window.menuBar().addMenu("&Units")
 881                         fileMenu.addAction(self._chooseFavoritesAction)
 882
 883                         viewMenu = self._window.menuBar().addMenu("&View")
 884                         viewMenu.addAction(self._app.showFavoritesAction)
 885                         viewMenu.addAction(self._app.condensedAction)
 886                         viewMenu.addSeparator()
 887                         viewMenu.addAction(self._app.jumpAction)
 888                         viewMenu.addAction(self._app.recentAction)
 889
 890                         self._window.addAction(self._closeWindowAction)
 891                         self._window.addAction(self._app.quitAction)
 892                         self._window.addAction(self._app.fullscreenAction)
 893                 else:
 894                         fileMenu = self._window.menuBar().addMenu("&Units")
 895                         fileMenu.addAction(self._chooseFavoritesAction)
 896                         fileMenu.addAction(self._closeWindowAction)
 897                         fileMenu.addAction(self._app.quitAction)
 898
 899                         viewMenu = self._window.menuBar().addMenu("&View")
 900                         viewMenu.addAction(self._app.showFavoritesAction)
 901                         viewMenu.addAction(self._app.condensedAction)
 902                         viewMenu.addSeparator()
 903                         viewMenu.addAction(self._app.jumpAction)
 904                         viewMenu.addAction(self._app.recentAction)
 905                         viewMenu.addSeparator()
 906                         viewMenu.addAction(self._app.fullscreenAction)
 907
 908                 self._window.addAction(self._app.logAction)
 909
 910                 self._update_favorites()
 911                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
 912                 self._window.show()
 913
 914         @property
 915         def window(self):
 916                 return self._window
 917
 918         def walk_children(self):
 919                 if self._unitWindow is not None:
 920                         yield self._unitWindow
 921                 if self._favoritesWindow is not None:
 922                         yield self._favoritesWindow
 923
 924         def show(self):
 925                 self._window.show()
 926                 for child in self.walk_children():
 927                         child.show()
 928
 929         def hide(self):
 930                 for child in self.walk_children():
 931                         child.hide()
 932                 self._window.hide()
 933
 934         def close(self):
 935                 for child in self.walk_children():
 936                         child.window.destroyed.disconnect(self._on_child_close)
 937                         child.close()
 938                 self._window.close()
 939
 940         def select_category(self, categoryName):
 941                 self._select_category(categoryName)
 942
 943                 i = unit_data.UNIT_CATEGORIES.index(categoryName)
 944                 rootIndex = self._categories.rootIndex()
 945                 currentIndex = self._categories.model().index(i, 0, rootIndex)
 946                 self._categories.scrollTo(currentIndex)
 947                 self._categories.setItemSelected(self._categories.topLevelItem(i), True)
 948                 return self._unitWindow
 949
 950         def set_fullscreen(self, isFullscreen):
 951                 if isFullscreen:
 952                         self._window.showFullScreen()
 953                 else:
 954                         self._window.showNormal()
 955                 for child in self.walk_children():
 956                         child.set_fullscreen(isFullscreen)
 957
 958         def _select_category(self, categoryName):
 959                 for child in self.walk_children():
 960                         child.window.destroyed.disconnect(self._on_child_close)
 961                         child.close()
 962                 self._unitWindow = UnitWindow(self._window, categoryName, self._app)
 963                 self._unitWindow.window.destroyed.connect(self._on_child_close)
 964
 965         def _update_favorites(self):
 966                 if self._app.showFavoritesAction.isChecked():
 967                         assert self._categories.topLevelItemCount() == len(unit_data.UNIT_CATEGORIES)
 968                         for i, catName in enumerate(unit_data.UNIT_CATEGORIES):
 969                                 if catName in self._app.hiddenCategories:
 970                                         self._categories.setRowHidden(i, self._categories.rootIndex(), True)
 971                                 else:
 972                                         self._categories.setRowHidden(i, self._categories.rootIndex(), False)
 973                 else:
 974                         for i in xrange(self._categories.topLevelItemCount()):
 975                                 self._categories.setRowHidden(i, self._categories.rootIndex(), False)
 976
 977         @misc_utils.log_exception(_moduleLogger)
 978         def _on_show_favorites(self, checked = True):
 979                 if checked:
 980                         assert self._categories.topLevelItemCount() == len(unit_data.UNIT_CATEGORIES)
 981                         for i, catName in enumerate(unit_data.UNIT_CATEGORIES):
 982                                 if catName in self._app.hiddenCategories:
 983                                         self._categories.setRowHidden(i, self._categories.rootIndex(), True)
 984                 else:
 985                         for i in xrange(self._categories.topLevelItemCount()):
 986                                 self._categories.setRowHidden(i, self._categories.rootIndex(), False)
 987
 988         @misc_utils.log_exception(_moduleLogger)
 989         def _on_choose_favorites(self, obj = None):
 990                 assert self._favoritesWindow is None
 991                 import windows
 992                 self._favoritesWindow = windows.FavoritesWindow(
 993                         self._window,
 994                         self._app,
 995                         unit_data.UNIT_CATEGORIES,
 996                         self._app.hiddenCategories
 997                 )
 998                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
 999                 return self._favoritesWindow
1000
1001         @misc_utils.log_exception(_moduleLogger)
1002         def _on_close_favorites(self, obj = None):
1003                 self._favoritesWindow = None
1004                 self._update_favorites()
1005
1006         @misc_utils.log_exception(_moduleLogger)
1007         def _on_child_close(self, obj = None):
1008                 self._unitWindow = None
1009
1010         @misc_utils.log_exception(_moduleLogger)
1011         def _on_close_window(self, checked = True):
1012                 self.close()
1013
1014         @misc_utils.log_exception(_moduleLogger)
1015         def _on_category_clicked(self, item, columnIndex):
1016                 categoryName = unicode(item.text(0))
1017                 self.select_category(categoryName)
1018
1019
1020 class UnitData(object):
1021
1022         HEADERS = ["Name", "Value", "", "Unit"]
1023         ALIGNMENT = [QtCore.Qt.AlignLeft, QtCore.Qt.AlignRight, QtCore.Qt.AlignLeft, QtCore.Qt.AlignLeft]
1024         NAME_COLUMN = 0
1025         VALUE_COLUMN_0 = 1
1026         VALUE_COLUMN_1 = 2
1027         UNIT_COLUMN = 3
1028
1029         __slots__ = [
1030                 "_name", "_unit", "_description", "_conversion",
1031                 "_value", "_integerDisplay", "_fractionalDisplay",
1032         ]
1033
1034         def __init__(self, name, unit, description, conversion):
1035                 self._name = name
1036                 self._unit = unit
1037                 self._description = description
1038                 self._conversion = conversion
1039
1040                 self._value = 0.0
1041                 self._integerDisplay, self._fractionalDisplay = split_number(self._value)
1042
1043         @property
1044         def name(self):
1045                 return self._name
1046
1047         @property
1048         def value(self):
1049                 return self._value
1050
1051         def update_value(self, newValue):
1052                 self._value = newValue
1053                 self._integerDisplay, self._fractionalDisplay = split_number(newValue)
1054
1055         @property
1056         def unit(self):
1057                 return self._unit
1058
1059         @property
1060         def conversion(self):
1061                 return self._conversion
1062
1063         def data(self, column):
1064                 try:
1065                         return [self._name, self._integerDisplay, self._fractionalDisplay, self._unit][column]
1066                 except IndexError:
1067                         return None
1068
1069
1070 class UnitModel(QtCore.QAbstractItemModel):
1071
1072         def __init__(self, categoryName, parent=None):
1073                 super(UnitModel, self).__init__(parent)
1074                 self._categoryName = categoryName
1075                 self._unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
1076                 if self._categoryName == "Computer Numbers":
1077                         self._sanitize_value = self._sanitize_alpha_value
1078                 else:
1079                         self._sanitize_value = self._sanitize_numeric_value
1080
1081                 self._children = []
1082                 for key in unit_data.get_units(self._categoryName):
1083                         conversion, unit, description = self._unitData[key]
1084                         self._children.append(UnitData(key, unit, description, conversion))
1085                 self._sortSettings = None
1086
1087         @misc_utils.log_exception(_moduleLogger)
1088         def columnCount(self, parent):
1089                 if parent.isValid():
1090                         return 0
1091                 else:
1092                         return len(UnitData.HEADERS)
1093
1094         @misc_utils.log_exception(_moduleLogger)
1095         def data(self, index, role):
1096                 #if not index.isValid():
1097                 #       return None
1098
1099                 if role == QtCore.Qt.DisplayRole:
1100                         item = index.internalPointer()
1101                         if isinstance(item, UnitData):
1102                                 return item.data(index.column())
1103                         elif item is UnitData.HEADERS:
1104                                 return item[index.column()]
1105                 elif role == QtCore.Qt.TextAlignmentRole:
1106                         return UnitData.ALIGNMENT[index.column()]
1107                 else:
1108                         return None
1109
1110         @misc_utils.log_exception(_moduleLogger)
1111         def sort(self, column, order = QtCore.Qt.AscendingOrder):
1112                 self._sortSettings = column, order
1113                 isReverse = order == QtCore.Qt.AscendingOrder
1114                 if column == UnitData.NAME_COLUMN:
1115                         key_func = lambda item: item.name
1116                 elif column in [UnitData.VALUE_COLUMN_0, UnitData.VALUE_COLUMN_1]:
1117                         key_func = lambda item: item.value
1118                 elif column == UnitData.UNIT_COLUMN:
1119                         key_func = lambda item: item.unit
1120                 self._children.sort(key=key_func, reverse = isReverse)
1121
1122                 self._all_changed()
1123
1124         @misc_utils.log_exception(_moduleLogger)
1125         def flags(self, index):
1126                 if not index.isValid():
1127                         return QtCore.Qt.NoItemFlags
1128
1129                 return QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable
1130
1131         @misc_utils.log_exception(_moduleLogger)
1132         def headerData(self, section, orientation, role):
1133                 if orientation == QtCore.Qt.Horizontal and role == QtCore.Qt.DisplayRole:
1134                         return UnitData.HEADERS[section]
1135
1136                 return None
1137
1138         @misc_utils.log_exception(_moduleLogger)
1139         def index(self, row, column, parent):
1140                 #if not self.hasIndex(row, column, parent):
1141                 #       return QtCore.QModelIndex()
1142                 #elif parent.isValid():
1143                 #       return QtCore.QModelIndex()
1144
1145                 parentItem = UnitData.HEADERS
1146                 childItem = self._children[row]
1147                 if childItem:
1148                         return self.createIndex(row, column, childItem)
1149                 else:
1150                         return QtCore.QModelIndex()
1151
1152         @misc_utils.log_exception(_moduleLogger)
1153         def parent(self, index):
1154                 if not index.isValid():
1155                         return QtCore.QModelIndex()
1156
1157                 childItem = index.internalPointer()
1158                 if isinstance(childItem, UnitData):
1159                         return QtCore.QModelIndex()
1160                 elif childItem is UnitData.HEADERS:
1161                         return None
1162
1163         @misc_utils.log_exception(_moduleLogger)
1164         def rowCount(self, parent):
1165                 if 0 < parent.column():
1166                         return 0
1167
1168                 if not parent.isValid():
1169                         return len(self._children)
1170                 else:
1171                         return len(self._children)
1172
1173         def get_unit(self, index):
1174                 assert 0 <= index
1175                 return self._children[index]
1176
1177         def get_unit_names(self):
1178                 for child in self._children:
1179                         yield child.name
1180
1181         def index_unit(self, unitName):
1182                 for i, child in enumerate(self._children):
1183                         if child.name == unitName:
1184                                 return i
1185                 else:
1186                         raise RuntimeError("Unit not found")
1187
1188         def update_values(self, fromIndex, userInput):
1189                 value = self._sanitize_value(userInput)
1190                 func, arg = self._children[fromIndex].conversion
1191                 base = func.to_base(value, arg)
1192                 for i, child in enumerate(self._children):
1193                         func, arg = child.conversion
1194                         newValue = func.from_base(base, arg)
1195                         child.update_value(newValue)
1196
1197                 if (
1198                         self._sortSettings is not None and
1199                         self._sortSettings[0]  in [UnitData.VALUE_COLUMN_0, UnitData.VALUE_COLUMN_1]
1200                 ):
1201                         # Sort takes care of marking everything as changed
1202                         self.sort(*self._sortSettings)
1203                         return True
1204                 else:
1205                         self._values_changed()
1206                         return False
1207
1208         def __len__(self):
1209                 return len(self._children)
1210
1211         def _values_changed(self):
1212                 topLeft = self.createIndex(0, UnitData.VALUE_COLUMN_0, self._children[0])
1213                 bottomRight = self.createIndex(len(self._children)-1, UnitData.VALUE_COLUMN_1, self._children[-1])
1214                 self.dataChanged.emit(topLeft, bottomRight)
1215
1216         def _all_changed(self):
1217                 topLeft = self.createIndex(0, 0, self._children[0])
1218                 bottomRight = self.createIndex(len(self._children)-1, len(UnitData.HEADERS)-1, self._children[-1])
1219                 self.dataChanged.emit(topLeft, bottomRight)
1220
1221         def _sanitize_alpha_value(self, userEntry):
1222                 if userEntry:
1223                         value = userEntry
1224                 else:
1225                         value = '0'
1226                 return value
1227
1228         def _sanitize_numeric_value(self, userEntry):
1229                 if userEntry:
1230                         value = float(userEntry)
1231                 else:
1232                         value = 0.0
1233                 return value
1234
1235
1236 class UnitWindow(object):
1237
1238         def __init__(self, parent, category, app):
1239                 self._app = app
1240                 self._categoryName = category
1241                 self._selectedIndex = 0
1242                 self._favoritesWindow = None
1243
1244                 self._selectedUnitName = QtGui.QLabel()
1245                 self._selectedUnitValue = QtGui.QLineEdit()
1246                 self._selectedUnitValue.textEdited.connect(self._on_value_edited)
1247                 qui_utils.mark_numbers_preferred(self._selectedUnitValue)
1248                 self._selectedUnitSymbol = QtGui.QLabel()
1249                 self._updateDelayTimer = QtCore.QTimer()
1250                 self._updateDelayTimer.setInterval(100)
1251                 self._updateDelayTimer.setSingleShot(True)
1252                 self._updateDelayTimer.timeout.connect(self._on_value_edited_delayed)
1253
1254                 self._selectedUnitLayout = QtGui.QHBoxLayout()
1255                 self._selectedUnitLayout.addWidget(self._selectedUnitName)
1256                 self._selectedUnitLayout.addWidget(self._selectedUnitValue)
1257                 self._selectedUnitLayout.addWidget(self._selectedUnitSymbol)
1258
1259                 self._unitsModel = UnitModel(self._categoryName)
1260                 self._unitsView = QtGui.QTreeView()
1261                 self._unitsView.setModel(self._unitsModel)
1262                 self._unitsView.setUniformRowHeights(True)
1263                 self._unitsView.setSortingEnabled(True)
1264                 self._unitsView.setRootIsDecorated(False)
1265                 self._unitsView.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
1266                 self._unitsView.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
1267                 self._unitsView.setSelectionMode(QtGui.QAbstractItemView.SingleSelection)
1268                 self._unitsView.setHeaderHidden(True)
1269                 self._unitsView.clicked.connect(self._on_unit_clicked)
1270                 if not constants.IS_MAEMO:
1271                         self._unitsView.setAlternatingRowColors(True)
1272
1273                 viewHeader = self._unitsView.header()
1274                 viewHeader.setSortIndicatorShown(True)
1275                 viewHeader.setClickable(True)
1276
1277                 viewHeader.setResizeMode(UnitData.NAME_COLUMN, QtGui.QHeaderView.ResizeToContents)
1278                 viewHeader.setResizeMode(UnitData.VALUE_COLUMN_0, QtGui.QHeaderView.ResizeToContents)
1279                 viewHeader.setResizeMode(UnitData.VALUE_COLUMN_1, QtGui.QHeaderView.ResizeToContents)
1280                 viewHeader.setResizeMode(UnitData.UNIT_COLUMN, QtGui.QHeaderView.ResizeToContents)
1281                 viewHeader.setStretchLastSection(False)
1282
1283                 # Trying to make things faster by locking in the initial size of the immutable columns
1284                 nameSize = min(viewHeader.sectionSize(UnitData.NAME_COLUMN), 300)
1285                 viewHeader.setResizeMode(UnitData.NAME_COLUMN, QtGui.QHeaderView.Fixed)
1286                 viewHeader.resizeSection(UnitData.NAME_COLUMN, nameSize)
1287                 unitSize = min(viewHeader.sectionSize(UnitData.UNIT_COLUMN), 150)
1288                 viewHeader.setResizeMode(UnitData.UNIT_COLUMN, QtGui.QHeaderView.Fixed)
1289                 viewHeader.resizeSection(UnitData.UNIT_COLUMN, unitSize)
1290
1291                 self._layout = QtGui.QVBoxLayout()
1292                 self._layout.addLayout(self._selectedUnitLayout)
1293                 self._layout.addWidget(self._unitsView)
1294
1295                 centralWidget = QtGui.QWidget()
1296                 centralWidget.setLayout(self._layout)
1297
1298                 self._window = QtGui.QMainWindow(parent)
1299                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
1300                 qui_utils.set_stackable(self._window, True)
1301                 self._window.setWindowTitle("%s - %s" % (constants.__pretty_app_name__, category))
1302                 self._window.setWindowIcon(QtGui.QIcon(app.appIconPath))
1303                 self._window.setCentralWidget(centralWidget)
1304
1305                 defaultUnitName = self._app.get_recent_unit(self._categoryName)
1306                 if defaultUnitName:
1307                         self.select_unit(defaultUnitName)
1308                 else:
1309                         self._select_unit(0)
1310
1311                 if self._app.sortByNameAction.isChecked():
1312                         sortColumn = UnitData.NAME_COLUMN
1313                 elif self._app.sortByValueAction.isChecked():
1314                         sortColumn = UnitData.VALUE_COLUMN_0
1315                 elif self._app.sortByUnitAction.isChecked():
1316                         sortColumn = UnitData.UNIT_COLUMN
1317                 else:
1318                         raise RuntimeError("No sort column selected")
1319                 if sortColumn != 0:
1320                         # By default it sorts by he first column (name)
1321                         self._unitsModel.sort(sortColumn)
1322
1323                 self._chooseFavoritesAction = QtGui.QAction(None)
1324                 self._chooseFavoritesAction.setText("Select Favorites")
1325                 self._chooseFavoritesAction.setShortcut(QtGui.QKeySequence("CTRL+f"))
1326                 self._chooseFavoritesAction.triggered.connect(self._on_choose_favorites)
1327
1328                 self._app.showFavoritesAction.toggled.connect(self._on_show_favorites)
1329
1330                 self._previousUnitAction = QtGui.QAction(None)
1331                 self._previousUnitAction.setText("Previous Unit")
1332                 self._previousUnitAction.setShortcut(QtGui.QKeySequence("Up"))
1333                 self._previousUnitAction.triggered.connect(self._on_previous_unit)
1334
1335                 self._nextUnitAction = QtGui.QAction(None)
1336                 self._nextUnitAction.setText("Next Unit")
1337                 self._nextUnitAction.setShortcut(QtGui.QKeySequence("Down"))
1338                 self._nextUnitAction.triggered.connect(self._on_next_unit)
1339
1340                 self._closeWindowAction = QtGui.QAction(None)
1341                 self._closeWindowAction.setText("Close Window")
1342                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
1343                 self._closeWindowAction.triggered.connect(self._on_close_window)
1344
1345                 if constants.IS_MAEMO:
1346                         self._window.addAction(self._closeWindowAction)
1347                         self._window.addAction(self._app.quitAction)
1348                         self._window.addAction(self._app.fullscreenAction)
1349
1350                         fileMenu = self._window.menuBar().addMenu("&Units")
1351                         fileMenu.addAction(self._chooseFavoritesAction)
1352
1353                         viewMenu = self._window.menuBar().addMenu("&View")
1354                         viewMenu.addAction(self._app.showFavoritesAction)
1355                         viewMenu.addAction(self._app.condensedAction)
1356                         viewMenu.addSeparator()
1357                         viewMenu.addAction(self._app.sortByNameAction)
1358                         viewMenu.addAction(self._app.sortByValueAction)
1359                         viewMenu.addAction(self._app.sortByUnitAction)
1360                         viewMenu.addSeparator()
1361                         viewMenu.addAction(self._app.jumpAction)
1362                         viewMenu.addAction(self._app.recentAction)
1363                 else:
1364                         fileMenu = self._window.menuBar().addMenu("&Units")
1365                         fileMenu.addAction(self._chooseFavoritesAction)
1366                         fileMenu.addAction(self._closeWindowAction)
1367                         fileMenu.addAction(self._app.quitAction)
1368
1369                         viewMenu = self._window.menuBar().addMenu("&View")
1370                         viewMenu.addAction(self._app.showFavoritesAction)
1371                         viewMenu.addAction(self._app.condensedAction)
1372                         viewMenu.addSeparator()
1373                         viewMenu.addAction(self._app.sortByNameAction)
1374                         viewMenu.addAction(self._app.sortByValueAction)
1375                         viewMenu.addAction(self._app.sortByUnitAction)
1376                         viewMenu.addSeparator()
1377                         viewMenu.addAction(self._app.jumpAction)
1378                         viewMenu.addAction(self._app.recentAction)
1379                         viewMenu.addSeparator()
1380                         viewMenu.addAction(self._app.fullscreenAction)
1381
1382                 self._app.sortByNameAction.triggered.connect(self._on_sort_by_name)
1383                 self._app.sortByValueAction.triggered.connect(self._on_sort_by_value)
1384                 self._app.sortByUnitAction.triggered.connect(self._on_sort_by_unit)
1385
1386                 self._window.addAction(self._app.logAction)
1387                 self._window.addAction(self._nextUnitAction)
1388                 self._window.addAction(self._previousUnitAction)
1389                 self._window.addAction(self._chooseFavoritesAction)
1390
1391                 self._update_favorites()
1392                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
1393                 self._window.show()
1394
1395         @property
1396         def window(self):
1397                 return self._window
1398
1399         def show(self):
1400                 for child in self.walk_children():
1401                         child.hide()
1402                 self._window.show()
1403
1404         def hide(self):
1405                 for child in self.walk_children():
1406                         child.hide()
1407                 self._window.hide()
1408
1409         def close(self):
1410                 for child in self.walk_children():
1411                         child.window.destroyed.disconnect(self._on_child_close)
1412                         child.close()
1413                 self._window.close()
1414
1415         def set_fullscreen(self, isFullscreen):
1416                 if isFullscreen:
1417                         self._window.showFullScreen()
1418                 else:
1419                         self._window.showNormal()
1420
1421         def select_unit(self, unitName):
1422                 index = self._unitsModel.index_unit(unitName)
1423                 self._select_unit(index)
1424
1425                 qindex = self._unitsModel.createIndex(index, 0, self._unitsModel.get_unit(index))
1426                 self._unitsView.scrollTo(qindex)
1427
1428         def walk_children(self):
1429                 if self._favoritesWindow is not None:
1430                         yield self._favoritesWindow
1431
1432         def _select_unit(self, index):
1433                 unit = self._unitsModel.get_unit(index)
1434                 self._selectedUnitName.setText(unit.name)
1435                 self._selectedUnitValue.setText(str(unit.value))
1436                 self._selectedUnitSymbol.setText(unit.unit)
1437
1438                 self._selectedIndex = index
1439                 self._app.add_recent(self._categoryName, self._unitsModel.get_unit(index).name)
1440
1441         def _update_favorites(self, force = False):
1442                 if self._app.showFavoritesAction.isChecked():
1443                         unitNames = list(self._unitsModel.get_unit_names())
1444                         hiddenUnits = self._app.get_hidden_units(self._categoryName)
1445                         for i, unitName in enumerate(unitNames):
1446                                 if unitName in hiddenUnits:
1447                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), True)
1448                                 else:
1449                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), False)
1450                 else:
1451                         if force:
1452                                 for i in xrange(len(self._unitsModel)):
1453                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), False)
1454
1455         @misc_utils.log_exception(_moduleLogger)
1456         def _on_show_favorites(self, checked = True):
1457                 if checked:
1458                         unitNames = list(self._unitsModel.get_unit_names())
1459                         hiddenUnits = self._app.get_hidden_units(self._categoryName)
1460                         for i, unitName in enumerate(unitNames):
1461                                 if unitName in hiddenUnits:
1462                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), True)
1463                 else:
1464                         for i in xrange(len(self._unitsModel)):
1465                                 self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), False)
1466
1467         @misc_utils.log_exception(_moduleLogger)
1468         def _on_choose_favorites(self, obj = None):
1469                 assert self._favoritesWindow is None
1470                 import windows
1471                 self._favoritesWindow = windows.FavoritesWindow(
1472                         self._window,
1473                         self._app,
1474                         unit_data.get_units(self._categoryName),
1475                         self._app.get_hidden_units(self._categoryName)
1476                 )
1477                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
1478                 return self._favoritesWindow
1479
1480         @misc_utils.log_exception(_moduleLogger)
1481         def _on_close_favorites(self, obj = None):
1482                 self._favoritesWindow = None
1483                 self._update_favorites(force=True)
1484
1485         @misc_utils.log_exception(_moduleLogger)
1486         def _on_previous_unit(self, checked = True):
1487                 index = self._selectedIndex - 1
1488                 unitData = self._unitsModel.get_unit(index)
1489                 unitName = unitData.name
1490
1491                 if self._app.showFavoritesAction.isChecked():
1492                         hiddenUnits = self._app.get_hidden_units(self._categoryName)
1493                         while unitName in hiddenUnits:
1494                                 index -= 1
1495                                 unitData = self._unitsModel.get_unit(index)
1496                                 unitName = unitData.name
1497
1498                 self.select_unit(unitName)
1499
1500         @misc_utils.log_exception(_moduleLogger)
1501         def _on_next_unit(self, checked = True):
1502                 index = self._selectedIndex + 1
1503                 unitData = self._unitsModel.get_unit(index)
1504                 unitName = unitData.name
1505
1506                 if self._app.showFavoritesAction.isChecked():
1507                         hiddenUnits = self._app.get_hidden_units(self._categoryName)
1508                         while unitName in hiddenUnits:
1509                                 index += 1
1510                                 unitData = self._unitsModel.get_unit(index)
1511                                 unitName = unitData.name
1512
1513                 self.select_unit(unitName)
1514
1515         @misc_utils.log_exception(_moduleLogger)
1516         def _on_close_window(self, checked = True):
1517                 self.close()
1518
1519         @misc_utils.log_exception(_moduleLogger)
1520         def _on_sort_by_name(self, checked = False):
1521                 self._unitsModel.sort(UnitData.NAME_COLUMN, QtCore.Qt.DescendingOrder)
1522
1523         @misc_utils.log_exception(_moduleLogger)
1524         def _on_sort_by_value(self, checked = False):
1525                 self._unitsModel.sort(UnitData.VALUE_COLUMN_0)
1526
1527         @misc_utils.log_exception(_moduleLogger)
1528         def _on_sort_by_unit(self, checked = False):
1529                 self._unitsModel.sort(UnitData.UNIT_COLUMN, QtCore.Qt.DescendingOrder)
1530
1531         @misc_utils.log_exception(_moduleLogger)
1532         def _on_unit_clicked(self, index):
1533                 self._select_unit(index.row())
1534
1535         @misc_utils.log_exception(_moduleLogger)
1536         def _on_value_edited(self, *args):
1537                 if not self._updateDelayTimer.isActive():
1538                         self._updateDelayTimer.start()
1539
1540         @misc_utils.log_exception(_moduleLogger)
1541         def _on_value_edited_delayed(self, *args):
1542                 userInput = str(self._selectedUnitValue.text())
1543                 orderChanged = self._unitsModel.update_values(self._selectedIndex, userInput)
1544                 if orderChanged:
1545                         self._update_favorites()
1546
1547
1548 def run_gonvert():
1549         try:
1550                 os.makedirs(constants._data_path_)
1551         except OSError, e:
1552                 if e.errno != 17:
1553                         raise
1554
1555         logFormat = '(%(relativeCreated)5d) %(levelname)-5s %(threadName)s.%(name)s.%(funcName)s: %(message)s'
1556         logging.basicConfig(level=logging.DEBUG, format=logFormat)
1557         rotating = logging.handlers.RotatingFileHandler(constants._user_logpath_, maxBytes=512*1024, backupCount=1)
1558         rotating.setFormatter(logging.Formatter(logFormat))
1559         root = logging.getLogger()
1560         root.addHandler(rotating)
1561         _moduleLogger.info("%s %s-%s" % (constants.__app_name__, constants.__version__, constants.__build__))
1562         _moduleLogger.info("OS: %s" % (os.uname()[0], ))
1563         _moduleLogger.info("Kernel: %s (%s) for %s" % os.uname()[2:])
1564         _moduleLogger.info("Hostname: %s" % os.uname()[1])
1565
1566         app = QtGui.QApplication([])
1567         handle = Gonvert(app)
1568         if constants.PROFILE_STARTUP:
1569                 return 0
1570         else:
1571                 return app.exec_()
1572
1573
1574 if __name__ == "__main__":
1575         import sys
1576         val = run_gonvert()
1577         sys.exit(val)