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 try:
  12         import json as simplejson
  13 except ImportError:
  14         print "json not available, falling back to simplejson"
  15         import simplejson
  16 import logging
  17 import logging.handlers
  18
  19 import util.qt_compat as qt_compat
  20 QtCore = qt_compat.QtCore
  21 QtGui = qt_compat.import_module("QtGui")
  22
  23 import constants
  24 from util import qui_utils
  25 from util import misc as misc_utils
  26 from util import linux as linux_utils
  27
  28 import unit_data
  29
  30
  31 _moduleLogger = logging.getLogger(__name__)
  32
  33
  34 def split_number(number):
  35         if number == 0.0:
  36                 # Optimize the startup case
  37                 return "0.", "0"
  38
  39         try:
  40                 fractional, integer = math.modf(number)
  41         except TypeError:
  42                 integerDisplay = number
  43                 fractionalDisplay = ""
  44         else:
  45                 integerDisplay = str(integer)
  46                 fractionalDisplay = str(fractional)
  47                 if "e+" in integerDisplay:
  48                         integerDisplay = number
  49                         fractionalDisplay = ""
  50                 elif "e-" in fractionalDisplay:
  51                         if 0.0 < integer:
  52                                 integerDisplay = number
  53                                 fractionalDisplay = ""
  54                         else:
  55                                 integerDisplay = ""
  56                                 fractionalDisplay = number
  57                 else:
  58                         integerDisplay = integerDisplay[0:-2] + "."
  59                         fractionalDisplay = fractionalDisplay[2:]
  60
  61         return integerDisplay, fractionalDisplay
  62
  63
  64 class Gonvert(object):
  65
  66         _DATA_PATHS = [
  67                 os.path.dirname(__file__),
  68                 os.path.join(os.path.dirname(__file__), "../share"),
  69                 os.path.join(os.path.dirname(__file__), "../data"),
  70                 '/usr/share/gonvert',
  71                 '/opt/gonvert/share',
  72         ]
  73
  74         def __init__(self, app):
  75                 self._dataPath = ""
  76                 self._app = app
  77                 self._appIconPath = ""
  78                 self._recent = []
  79                 self._hiddenCategories = set()
  80                 self._hiddenUnits = {}
  81                 self._clipboard = QtGui.QApplication.clipboard()
  82
  83                 self._jumpWindow = None
  84                 self._recentWindow = None
  85                 self._mainWindow = None
  86                 self._catWindow = None
  87                 self._quickWindow = None
  88
  89                 self._on_jump_close = lambda obj = None: self._on_child_close("_jumpWindow", obj)
  90                 self._on_recent_close = lambda obj = None: self._on_child_close("_recentWindow", obj)
  91                 self._on_cat_close = lambda obj = None: self._on_child_close("_catWindow", obj)
  92                 self._on_quick_close = lambda obj = None: self._on_child_close("_quickWindow", obj)
  93
  94                 self._condensedAction = QtGui.QAction(None)
  95                 self._condensedAction.setText("Condensed View")
  96                 self._condensedAction.setCheckable(True)
  97                 self._condensedAction.triggered.connect(self._on_condensed_start)
  98
  99                 self._jumpAction = QtGui.QAction(None)
 100                 self._jumpAction.setText("Quick Jump")
 101                 self._jumpAction.setStatusTip("Search for a unit and jump straight to it")
 102                 self._jumpAction.setToolTip("Search for a unit and jump straight to it")
 103                 self._jumpAction.setShortcut(QtGui.QKeySequence("CTRL+j"))
 104                 self._jumpAction.triggered.connect(self._on_jump_start)
 105
 106                 self._recentAction = QtGui.QAction(None)
 107                 self._recentAction.setText("Recent Units")
 108                 self._recentAction.setStatusTip("View the recent units")
 109                 self._recentAction.setToolTip("View the recent units")
 110                 self._recentAction.setShortcut(QtGui.QKeySequence("CTRL+r"))
 111                 self._recentAction.triggered.connect(self._on_recent_start)
 112
 113                 self._fullscreenAction = QtGui.QAction(None)
 114                 self._fullscreenAction.setText("Fullscreen")
 115                 self._fullscreenAction.setCheckable(True)
 116                 self._fullscreenAction.setShortcut(QtGui.QKeySequence("CTRL+Enter"))
 117                 self._fullscreenAction.toggled.connect(self._on_toggle_fullscreen)
 118
 119                 self._showFavoritesAction = QtGui.QAction(None)
 120                 self._showFavoritesAction.setCheckable(True)
 121                 self._showFavoritesAction.setText("Favorites Only")
 122
 123                 self._sortActionGroup = QtGui.QActionGroup(None)
 124                 self._sortByNameAction = QtGui.QAction(self._sortActionGroup)
 125                 self._sortByNameAction.setText("Sort By Name")
 126                 self._sortByNameAction.setStatusTip("Sort the units by name")
 127                 self._sortByNameAction.setToolTip("Sort the units by name")
 128                 self._sortByNameAction.setCheckable(True)
 129                 self._sortByValueAction = QtGui.QAction(self._sortActionGroup)
 130                 self._sortByValueAction.setText("Sort By Value")
 131                 self._sortByValueAction.setStatusTip("Sort the units by value")
 132                 self._sortByValueAction.setToolTip("Sort the units by value")
 133                 self._sortByValueAction.setCheckable(True)
 134                 self._sortByUnitAction = QtGui.QAction(self._sortActionGroup)
 135                 self._sortByUnitAction.setText("Sort By Unit")
 136                 self._sortByUnitAction.setStatusTip("Sort the units by unit")
 137                 self._sortByUnitAction.setToolTip("Sort the units by unit")
 138                 self._sortByUnitAction.setCheckable(True)
 139
 140                 self._sortByNameAction.setChecked(True)
 141
 142                 self._logAction = QtGui.QAction(None)
 143                 self._logAction.setText("Log")
 144                 self._logAction.setShortcut(QtGui.QKeySequence("CTRL+l"))
 145                 self._logAction.triggered.connect(self._on_log)
 146
 147                 self._quitAction = QtGui.QAction(None)
 148                 self._quitAction.setText("Quit")
 149                 self._quitAction.setShortcut(QtGui.QKeySequence("CTRL+q"))
 150                 self._quitAction.triggered.connect(self._on_quit)
 151
 152                 self._app.lastWindowClosed.connect(self._on_app_quit)
 153                 self.load_settings()
 154
 155                 self.request_category()
 156                 if self._recent:
 157                         self._mainWindow.select_category(self._recent[-1][0])
 158
 159         def request_category(self):
 160                 if self._condensedAction.isChecked():
 161                         if self._catWindow is not None:
 162                                 self._catWindow.hide()
 163
 164                         if self._quickWindow is None:
 165                                 self._quickWindow = QuickConvert(None, self)
 166                                 self._quickWindow.window.destroyed.connect(self._on_quick_close)
 167                         else:
 168                                 self._quickWindow.show()
 169
 170                         self._mainWindow = self._quickWindow
 171                 else:
 172                         if self._quickWindow is not None:
 173                                 self._quickWindow.hide()
 174
 175                         if self._catWindow is None:
 176                                 self._catWindow = CategoryWindow(None, self)
 177                                 self._catWindow.window.destroyed.connect(self._on_cat_close)
 178                         else:
 179                                 self._catWindow.window.show()
 180
 181                         self._mainWindow = self._catWindow
 182
 183                 return self._mainWindow
 184
 185         def search_units(self):
 186                 import windows
 187                 jumpWindow = windows.QuickJump(None, self)
 188                 jumpWindow.window.destroyed.connect(self._on_jump_close)
 189                 self._jumpWindow = jumpWindow
 190                 return self._jumpWindow
 191
 192         def show_recent(self):
 193                 import windows
 194                 recentWindow = windows.Recent(None, self)
 195                 recentWindow.window.destroyed.connect(self._on_recent_close)
 196                 self._recentWindow = recentWindow
 197                 return self._recentWindow
 198
 199         def add_recent(self, categoryName, unitName):
 200                 catUnit = categoryName, unitName
 201                 try:
 202                         self._recent.remove(catUnit)
 203                 except ValueError:
 204                         pass # ignore if its not already in the recent history
 205                 assert catUnit not in self._recent
 206                 self._recent.append(catUnit)
 207
 208         def get_recent_unit(self, categoryName, fromMostRecent = 0):
 209                 recentUnitName = ""
 210                 for catName, unitName in reversed(self._recent):
 211                         if catName == categoryName:
 212                                 recentUnitName = unitName
 213                                 if fromMostRecent <= 0:
 214                                         break
 215                                 else:
 216                                         fromMostRecent -= 1
 217                 return recentUnitName
 218
 219         def get_recent(self):
 220                 return reversed(self._recent)
 221
 222         @property
 223         def hiddenCategories(self):
 224                 return self._hiddenCategories
 225
 226         def get_hidden_units(self, categoryName):
 227                 try:
 228                         return self._hiddenUnits[categoryName]
 229                 except KeyError:
 230                         self._hiddenUnits[categoryName] = set()
 231                         return self._hiddenUnits[categoryName]
 232
 233         def load_settings(self):
 234                 settingsPath = linux_utils.get_resource_path(
 235                         "config", constants.__app_name__, "settings.json"
 236                 )
 237                 try:
 238                         with open(settingsPath, "r") as settingsFile:
 239                                 settings = simplejson.load(settingsFile)
 240                 except IOError, e:
 241                         _moduleLogger.info("No settings")
 242                         settings = {}
 243                 except ValueError:
 244                         _moduleLogger.info("Settings were corrupt")
 245                         settings = {}
 246
 247                 self._fullscreenAction.setChecked(settings.get("isFullScreen", False))
 248
 249                 sortBy = settings.get("sortBy", "name")
 250                 if sortBy not in ["name", "value", "unit"]:
 251                         _moduleLogger.info("Setting sortBy is not a valid value: %s" % sortBy)
 252                         sortBy = "name"
 253                 if sortBy == "name":
 254                         self._sortByNameAction.setChecked(True)
 255                         self._sortByValueAction.setChecked(False)
 256                         self._sortByUnitAction.setChecked(False)
 257                 elif sortBy == "value":
 258                         self._sortByNameAction.setChecked(False)
 259                         self._sortByValueAction.setChecked(True)
 260                         self._sortByUnitAction.setChecked(False)
 261                 elif sortBy == "unit":
 262                         self._sortByNameAction.setChecked(False)
 263                         self._sortByValueAction.setChecked(False)
 264                         self._sortByUnitAction.setChecked(True)
 265                 else:
 266                         raise RuntimeError("How did this sortBy come about? %s" % sortBy)
 267
 268                 recent = settings.get("recent", self._recent)
 269                 for category, unit in recent:
 270                         self.add_recent(category, unit)
 271
 272                 self._hiddenCategories = set(settings.get("hiddenCategories", set()))
 273                 self._hiddenUnits = dict(
 274                         (catName, set(units))
 275                         for (catName, units) in settings.get("hiddenUnits", {}).iteritems()
 276                 )
 277
 278                 self._showFavoritesAction.setChecked(settings.get("showFavorites", True))
 279
 280                 self._condensedAction.setChecked(settings.get("useQuick", True))
 281
 282         def save_settings(self):
 283                 if self._sortByNameAction.isChecked():
 284                         sortBy = "name"
 285                 elif self._sortByValueAction.isChecked():
 286                         sortBy = "value"
 287                 elif self._sortByUnitAction.isChecked():
 288                         sortBy = "unit"
 289                 else:
 290                         raise RuntimeError("Unknown sorting value")
 291                 settings = {
 292                         "isFullScreen": self._fullscreenAction.isChecked(),
 293                         "recent": self._recent,
 294                         "hiddenCategories": list(self._hiddenCategories),
 295                         "hiddenUnits": dict(
 296                                 (catName, list(units))
 297                                 for (catName, units) in self._hiddenUnits.iteritems()
 298                         ),
 299                         "showFavorites": self._showFavoritesAction.isChecked(),
 300                         "useQuick": self._condensedAction.isChecked(),
 301                         "sortBy": sortBy,
 302                 }
 303
 304                 settingsPath = linux_utils.get_resource_path(
 305                         "config", constants.__app_name__, "settings.json"
 306                 )
 307                 with open(settingsPath, "w") as settingsFile:
 308                         simplejson.dump(settings, settingsFile)
 309
 310         @property
 311         def appIconPath(self):
 312                 return self._appIconPath
 313
 314         @property
 315         def jumpAction(self):
 316                 return self._jumpAction
 317
 318         @property
 319         def recentAction(self):
 320                 return self._recentAction
 321
 322         @property
 323         def fullscreenAction(self):
 324                 return self._fullscreenAction
 325
 326         @property
 327         def condensedAction(self):
 328                 return self._condensedAction
 329
 330         @property
 331         def sortByNameAction(self):
 332                 return self._sortByNameAction
 333
 334         @property
 335         def sortByValueAction(self):
 336                 return self._sortByValueAction
 337
 338         @property
 339         def sortByUnitAction(self):
 340                 return self._sortByUnitAction
 341
 342         @property
 343         def logAction(self):
 344                 return self._logAction
 345
 346         @property
 347         def quitAction(self):
 348                 return self._quitAction
 349
 350         @property
 351         def showFavoritesAction(self):
 352                 return self._showFavoritesAction
 353
 354         def _walk_children(self):
 355                 if self._catWindow is not None:
 356                         yield self._catWindow
 357                 if self._quickWindow is not None:
 358                         yield self._quickWindow
 359                 if self._jumpWindow is not None:
 360                         yield self._jumpWindow
 361                 if self._recentWindow is not None:
 362                         yield self._recentWindow
 363
 364         def _close_windows(self):
 365                 if self._catWindow is not None:
 366                         self._catWindow.window.destroyed.disconnect(self._on_cat_close)
 367                         self._catWindow.close()
 368                         self._catWindow = None
 369                 if self._quickWindow is not None:
 370                         self._quickWindow.window.destroyed.disconnect(self._on_quick_close)
 371                         self._quickWindow.close()
 372                         self._quickWindow = None
 373                 if self._jumpWindow is not None:
 374                         self._jumpWindow.window.destroyed.disconnect(self._on_jump_close)
 375                         self._jumpWindow.close()
 376                         self._jumpWindow = None
 377                 if self._recentWindow is not None:
 378                         self._recentWindow.window.destroyed.disconnect(self._on_recent_close)
 379                         self._recentWindow.close()
 380                         self._recentWindow = None
 381
 382         @misc_utils.log_exception(_moduleLogger)
 383         def _on_app_quit(self, checked = False):
 384                 self.save_settings()
 385
 386         @misc_utils.log_exception(_moduleLogger)
 387         def _on_child_close(self, name, obj = None):
 388                 if not hasattr(self, name):
 389                         _moduleLogger.info("Something weird going on when we don't have a %s" % name)
 390                         return
 391                 setattr(self, name, None)
 392
 393         @misc_utils.log_exception(_moduleLogger)
 394         def _on_toggle_fullscreen(self, checked = False):
 395                 for window in self._walk_children():
 396                         window.set_fullscreen(checked)
 397
 398         @misc_utils.log_exception(_moduleLogger)
 399         def _on_condensed_start(self, checked = False):
 400                 self.request_category()
 401                 if self._recent:
 402                         self._mainWindow.select_category(self._recent[-1][0])
 403
 404         @misc_utils.log_exception(_moduleLogger)
 405         def _on_jump_start(self, checked = False):
 406                 self.search_units()
 407
 408         @misc_utils.log_exception(_moduleLogger)
 409         def _on_recent_start(self, checked = False):
 410                 self.show_recent()
 411
 412         @misc_utils.log_exception(_moduleLogger)
 413         def _on_log(self, checked = False):
 414                 logPath = linux_utils.get_resource_path(
 415                         "cache", self._constants.__app_name__, "%s.log" % self._constants.__app_name__
 416                 )
 417                 with open(logPath, "r") as f:
 418                         logLines = f.xreadlines()
 419                         log = "".join(logLines)
 420                         self._clipboard.setText(log)
 421
 422         @misc_utils.log_exception(_moduleLogger)
 423         def _on_quit(self, checked = False):
 424                 self._close_windows()
 425
 426
 427 class QuickConvert(object):
 428
 429         def __init__(self, parent, app):
 430                 self._app = app
 431                 self._categoryName = ""
 432                 self._inputUnitName = ""
 433                 self._outputUnitName = ""
 434                 self._unitNames = []
 435                 self._favoritesWindow = None
 436
 437                 self._inputUnitValue = QtGui.QLineEdit()
 438                 qui_utils.mark_numbers_preferred(self._inputUnitValue)
 439                 self._inputUnitValue.textEdited.connect(self._on_value_edited)
 440                 self._inputUnitSymbol = QtGui.QLabel()
 441
 442                 self._outputUnitValue = QtGui.QLineEdit()
 443                 qui_utils.mark_numbers_preferred(self._outputUnitValue)
 444                 self._outputUnitValue.textEdited.connect(self._on_output_value_edited)
 445                 self._outputUnitSymbol = QtGui.QLabel()
 446
 447                 self._conversionLayout = QtGui.QHBoxLayout()
 448                 self._conversionLayout.addWidget(self._inputUnitValue)
 449                 self._conversionLayout.addWidget(self._inputUnitSymbol)
 450                 self._conversionLayout.addWidget(self._outputUnitValue)
 451                 self._conversionLayout.addWidget(self._outputUnitSymbol)
 452
 453                 self._categoryView = QtGui.QTreeWidget()
 454                 self._categoryView.setHeaderLabels(["Categories"])
 455                 self._categoryView.setHeaderHidden(False)
 456                 self._categoryView.setRootIsDecorated(False)
 457                 if not constants.IS_MAEMO:
 458                         self._categoryView.setAlternatingRowColors(True)
 459                 self._categoryView.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
 460                 self._categoryView.setSelectionMode(QtGui.QAbstractItemView.SingleSelection)
 461                 for catName in unit_data.UNIT_CATEGORIES:
 462                         twi = QtGui.QTreeWidgetItem(self._categoryView)
 463                         twi.setText(0, catName)
 464                 self._categorySelection = self._categoryView.selectionModel()
 465                 self._categorySelection.selectionChanged.connect(self._on_category_selection_changed)
 466
 467                 self._inputView = QtGui.QTreeWidget()
 468                 self._inputView.setHeaderLabels(["From", "Name"])
 469                 self._inputView.setHeaderHidden(False)
 470                 self._inputView.header().hideSection(1)
 471                 self._inputView.setRootIsDecorated(False)
 472                 if not constants.IS_MAEMO:
 473                         self._inputView.setAlternatingRowColors(True)
 474                 self._inputView.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
 475                 self._inputView.setSelectionMode(QtGui.QAbstractItemView.SingleSelection)
 476                 self._inputSelection = self._inputView.selectionModel()
 477                 self._inputSelection.selectionChanged.connect(self._on_input_selection_changed)
 478
 479                 self._outputView = QtGui.QTreeWidget()
 480                 self._outputView.setHeaderLabels(["To", "Name"])
 481                 self._outputView.setHeaderHidden(False)
 482                 self._outputView.header().hideSection(1)
 483                 self._outputView.setRootIsDecorated(False)
 484                 if not constants.IS_MAEMO:
 485                         self._outputView.setAlternatingRowColors(True)
 486                 self._outputView.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
 487                 self._outputView.setSelectionMode(QtGui.QAbstractItemView.SingleSelection)
 488                 self._outputWidgets = []
 489                 self._outputSelection = self._outputView.selectionModel()
 490                 self._outputSelection.selectionChanged.connect(self._on_output_selection_changed)
 491
 492                 self._selectionLayout = QtGui.QHBoxLayout()
 493                 self._selectionLayout.addWidget(self._categoryView)
 494                 self._selectionLayout.addWidget(self._inputView)
 495                 self._selectionLayout.addWidget(self._outputView)
 496
 497                 self._layout = QtGui.QVBoxLayout()
 498                 self._layout.addLayout(self._conversionLayout)
 499                 self._layout.addLayout(self._selectionLayout)
 500
 501                 centralWidget = QtGui.QWidget()
 502                 centralWidget.setLayout(self._layout)
 503
 504                 self._window = QtGui.QMainWindow(parent)
 505                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 506                 qui_utils.set_stackable(self._window, True)
 507                 self._window.setWindowTitle("%s - Quick Convert" % (constants.__pretty_app_name__, ))
 508                 self._window.setWindowIcon(QtGui.QIcon(app.appIconPath))
 509                 self._window.setCentralWidget(centralWidget)
 510
 511                 self._chooseCatFavoritesAction = QtGui.QAction(None)
 512                 self._chooseCatFavoritesAction.setText("Select Categories")
 513                 self._chooseCatFavoritesAction.triggered.connect(self._on_choose_category_favorites)
 514
 515                 self._chooseUnitFavoritesAction = QtGui.QAction(None)
 516                 self._chooseUnitFavoritesAction.setText("Select Units")
 517                 self._chooseUnitFavoritesAction.triggered.connect(self._on_choose_unit_favorites)
 518                 self._chooseUnitFavoritesAction.setEnabled(False)
 519
 520                 self._app.showFavoritesAction.toggled.connect(self._on_show_favorites)
 521
 522                 self._closeWindowAction = QtGui.QAction(None)
 523                 self._closeWindowAction.setText("Close Window")
 524                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 525                 self._closeWindowAction.triggered.connect(self._on_close_window)
 526
 527                 if constants.IS_MAEMO:
 528                         self._window.addAction(self._closeWindowAction)
 529                         self._window.addAction(self._app.quitAction)
 530                         self._window.addAction(self._app.fullscreenAction)
 531
 532                         fileMenu = self._window.menuBar().addMenu("&Units")
 533                         fileMenu.addAction(self._chooseCatFavoritesAction)
 534                         fileMenu.addAction(self._chooseUnitFavoritesAction)
 535
 536                         viewMenu = self._window.menuBar().addMenu("&View")
 537                         viewMenu.addAction(self._app.showFavoritesAction)
 538                         viewMenu.addAction(self._app.condensedAction)
 539                         viewMenu.addSeparator()
 540                         viewMenu.addAction(self._app.jumpAction)
 541                         viewMenu.addAction(self._app.recentAction)
 542                 else:
 543                         fileMenu = self._window.menuBar().addMenu("&Units")
 544                         fileMenu.addAction(self._chooseCatFavoritesAction)
 545                         fileMenu.addAction(self._chooseUnitFavoritesAction)
 546                         fileMenu.addAction(self._closeWindowAction)
 547                         fileMenu.addAction(self._app.quitAction)
 548
 549                         viewMenu = self._window.menuBar().addMenu("&View")
 550                         viewMenu.addAction(self._app.showFavoritesAction)
 551                         viewMenu.addAction(self._app.condensedAction)
 552                         viewMenu.addSeparator()
 553                         viewMenu.addAction(self._app.jumpAction)
 554                         viewMenu.addAction(self._app.recentAction)
 555                         viewMenu.addSeparator()
 556                         viewMenu.addAction(self._app.fullscreenAction)
 557
 558                 self._window.addAction(self._app.logAction)
 559
 560                 self._update_favorites()
 561                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
 562                 self._window.show()
 563
 564         @property
 565         def window(self):
 566                 return self._window
 567
 568         def show(self):
 569                 self._window.show()
 570
 571         def hide(self):
 572                 self._window.hide()
 573
 574         def close(self):
 575                 self._window.close()
 576
 577         def set_fullscreen(self, isFullscreen):
 578                 if isFullscreen:
 579                         self._window.showFullScreen()
 580                 else:
 581                         self._window.showNormal()
 582
 583         def select_category(self, categoryName):
 584                 self._select_category(categoryName)
 585
 586                 self._categoryView.clearSelection()
 587                 i = unit_data.UNIT_CATEGORIES.index(categoryName)
 588                 rootIndex = self._categoryView.rootIndex()
 589                 currentIndex = self._categoryView.model().index(i, 0, rootIndex)
 590                 self._categoryView.scrollTo(currentIndex)
 591                 self._categoryView.topLevelItem(i).setSelected(True)
 592
 593                 return self
 594
 595         def select_unit(self, name):
 596                 self.select_input(name)
 597                 return self
 598
 599         def select_input(self, name):
 600                 self._select_input(name)
 601
 602                 self._inputView.clearSelection()
 603                 i = self._unitNames.index(name)
 604                 rootIndex = self._inputView.rootIndex()
 605                 currentIndex = self._inputView.model().index(i, 0, rootIndex)
 606                 self._inputView.scrollTo(currentIndex)
 607                 self._inputView.topLevelItem(i).setSelected(True)
 608
 609         def select_output(self, name):
 610                 self._select_output(name)
 611
 612                 self._outputView.clearSelection()
 613                 i = self._unitNames.index(name)
 614                 rootIndex = self._outputView.rootIndex()
 615                 currentIndex = self._outputView.model().index(i, 0, rootIndex)
 616                 self._outputView.scrollTo(currentIndex)
 617                 self._outputView.topLevelItem(i).setSelected(True)
 618
 619         def _select_category(self, categoryName):
 620                 self._inputUnitName = ""
 621                 self._outputUnitName = ""
 622                 self._inputUnitValue.setText("")
 623                 self._inputUnitSymbol.setText("")
 624                 self._inputView.clear()
 625                 self._outputUnitValue.setText("")
 626                 self._outputUnitSymbol.setText("")
 627                 self._outputView.clear()
 628                 self._categoryName = categoryName
 629                 self._chooseUnitFavoritesAction.setEnabled(True)
 630
 631                 unitData = unit_data.UNIT_DESCRIPTIONS[categoryName]
 632                 self._unitNames = list(unit_data.get_units(categoryName))
 633                 self._unitNames.sort()
 634                 for key in self._unitNames:
 635                         conversion, unit, description = unitData[key]
 636                         unit = key
 637
 638                         twi = QtGui.QTreeWidgetItem(self._inputView)
 639                         twi.setText(0, unit)
 640                         twi.setText(1, key)
 641
 642                         twi = QtGui.QTreeWidgetItem(self._outputView)
 643                         twi.setText(0, unit)
 644                         twi.setText(1, key)
 645
 646                 defaultInputUnitName = self._app.get_recent_unit(categoryName)
 647                 if defaultInputUnitName:
 648                         self.select_input(defaultInputUnitName)
 649                         defaultOutputUnitName = self._app.get_recent_unit(categoryName, 1)
 650                         if not defaultOutputUnitName:
 651                                 _moduleLogger.error(
 652                                         "Somehow we have an odd numer of items in the history for category %r with only %r present",
 653                                         categoryName,
 654                                         defaultInputUnitName,
 655                                 )
 656                                 defaultOutputUnitName = defaultInputUnitName
 657                         self.select_output(defaultOutputUnitName)
 658
 659         def _select_input(self, name):
 660                 self._app.add_recent(self._categoryName, name)
 661                 self._inputUnitName = name
 662
 663                 unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
 664                 conversion, unit, description = unitData[name]
 665
 666                 self._inputUnitSymbol.setText(unit if unit else name)
 667
 668                 if "" not in [self._categoryName, self._inputUnitName, self._outputUnitName]:
 669                         self._update_output()
 670
 671         def _select_output(self, name):
 672                 # Add the output to recent but don't make things weird by making it the most recent
 673                 self._app.add_recent(self._categoryName, name)
 674                 self._app.add_recent(self._categoryName, self._inputUnitName)
 675                 self._outputUnitName = name
 676
 677                 unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
 678                 conversion, unit, description = unitData[name]
 679
 680                 self._outputUnitSymbol.setText(unit if unit else name)
 681
 682                 if "" not in [self._categoryName, self._inputUnitName, self._outputUnitName]:
 683                         self._update_output()
 684
 685         def _sanitize_value(self, userEntry):
 686                 if self._categoryName == "Computer Numbers":
 687                         if userEntry == '':
 688                                 value = '0'
 689                         else:
 690                                 value = userEntry
 691                 else:
 692                         if userEntry == '':
 693                                 value = 0.0
 694                         else:
 695                                 value = float(userEntry)
 696                 return value
 697
 698         def _update_output(self):
 699                 assert self._categoryName
 700                 assert self._inputUnitName
 701                 assert self._outputUnitName
 702
 703                 userInput = str(self._inputUnitValue.text())
 704                 value = self._sanitize_value(userInput)
 705
 706                 unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
 707                 inputConversion, _, _ = unitData[self._inputUnitName]
 708                 outputConversion, _, _ = unitData[self._outputUnitName]
 709
 710                 func, arg = inputConversion
 711                 base = func.to_base(value, arg)
 712
 713                 func, arg = outputConversion
 714                 newValue = func.from_base(base, arg)
 715                 self._outputUnitValue.setText(str(newValue))
 716
 717         def _update_input(self):
 718                 assert self._categoryName
 719                 assert self._inputUnitName
 720                 assert self._outputUnitName
 721
 722                 userOutput = str(self._outputUnitValue.text())
 723                 value = self._sanitize_value(userOutput)
 724
 725                 unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
 726                 inputConversion, _, _ = unitData[self._inputUnitName]
 727                 outputConversion, _, _ = unitData[self._outputUnitName]
 728
 729                 func, arg = outputConversion
 730                 base = func.to_base(value, arg)
 731
 732                 func, arg = inputConversion
 733                 newValue = func.from_base(base, arg)
 734                 self._inputUnitValue.setText(str(newValue))
 735
 736         def _update_favorites(self):
 737                 if self._app.showFavoritesAction.isChecked():
 738                         assert self._categoryView.topLevelItemCount() == len(unit_data.UNIT_CATEGORIES)
 739                         for i, catName in enumerate(unit_data.UNIT_CATEGORIES):
 740                                 if catName in self._app.hiddenCategories:
 741                                         self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), True)
 742                                 else:
 743                                         self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), False)
 744
 745                         for i, unitName in enumerate(self._unitNames):
 746                                 if unitName in self._app.get_hidden_units(self._categoryName):
 747                                         self._inputView.setRowHidden(i, self._inputView.rootIndex(), True)
 748                                         self._outputView.setRowHidden(i, self._outputView.rootIndex(), True)
 749                                 else:
 750                                         self._inputView.setRowHidden(i, self._inputView.rootIndex(), False)
 751                                         self._outputView.setRowHidden(i, self._outputView.rootIndex(), False)
 752                 else:
 753                         for i in xrange(self._categoryView.topLevelItemCount()):
 754                                 self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), False)
 755
 756                         for i in xrange(len(self._unitNames)):
 757                                 self._inputView.setRowHidden(i, self._inputView.rootIndex(), False)
 758                                 self._outputView.setRowHidden(i, self._outputView.rootIndex(), False)
 759
 760         @misc_utils.log_exception(_moduleLogger)
 761         def _on_close_window(self, checked = True):
 762                 self.close()
 763
 764         @misc_utils.log_exception(_moduleLogger)
 765         def _on_show_favorites(self, checked = True):
 766                 if checked:
 767                         assert self._categoryView.topLevelItemCount() == len(unit_data.UNIT_CATEGORIES)
 768                         for i, catName in enumerate(unit_data.UNIT_CATEGORIES):
 769                                 if catName in self._app.hiddenCategories:
 770                                         self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), True)
 771
 772                         for i, unitName in enumerate(self._unitNames):
 773                                 if unitName in self._app.get_hidden_units(self._categoryName):
 774                                         self._inputView.setRowHidden(i, self._inputView.rootIndex(), True)
 775                                         self._outputView.setRowHidden(i, self._outputView.rootIndex(), True)
 776                 else:
 777                         for i in xrange(self._categoryView.topLevelItemCount()):
 778                                 self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), False)
 779
 780                         for i in xrange(len(self._unitNames)):
 781                                 self._inputView.setRowHidden(i, self._inputView.rootIndex(), False)
 782                                 self._outputView.setRowHidden(i, self._outputView.rootIndex(), False)
 783
 784         @misc_utils.log_exception(_moduleLogger)
 785         def _on_choose_category_favorites(self, obj = None):
 786                 assert self._favoritesWindow is None
 787                 import windows
 788                 self._favoritesWindow = windows.FavoritesWindow(
 789                         self._window,
 790                         self._app,
 791                         unit_data.UNIT_CATEGORIES,
 792                         self._app.hiddenCategories
 793                 )
 794                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
 795                 return self._favoritesWindow
 796
 797         @misc_utils.log_exception(_moduleLogger)
 798         def _on_choose_unit_favorites(self, obj = None):
 799                 assert self._favoritesWindow is None
 800                 import windows
 801                 self._favoritesWindow = windows.FavoritesWindow(
 802                         self._window,
 803                         self._app,
 804                         unit_data.get_units(self._categoryName),
 805                         self._app.get_hidden_units(self._categoryName)
 806                 )
 807                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
 808                 return self._favoritesWindow
 809
 810         @misc_utils.log_exception(_moduleLogger)
 811         def _on_close_favorites(self, obj = None):
 812                 self._favoritesWindow = None
 813                 self._update_favorites()
 814
 815         @misc_utils.log_exception(_moduleLogger)
 816         def _on_value_edited(self, *args):
 817                 self._update_output()
 818
 819         @misc_utils.log_exception(_moduleLogger)
 820         def _on_output_value_edited(self, *args):
 821                 self._update_input()
 822
 823         @misc_utils.log_exception(_moduleLogger)
 824         def _on_category_selection_changed(self, selected, deselected):
 825                 selectedNames = [
 826                         str(item.text(0))
 827                         for item in self._categoryView.selectedItems()
 828                 ]
 829                 if selectedNames:
 830                         self._select_category(selectedNames[0])
 831
 832         @misc_utils.log_exception(_moduleLogger)
 833         def _on_input_selection_changed(self, selected, deselected):
 834                 selectedNames = [
 835                         str(item.text(1))
 836                         for item in self._inputView.selectedItems()
 837                 ]
 838                 if selectedNames:
 839                         assert len(selectedNames) == 1
 840                         name = selectedNames[0]
 841                         self._select_input(name)
 842                 else:
 843                         pass
 844
 845         @misc_utils.log_exception(_moduleLogger)
 846         def _on_output_selection_changed(self, selected, deselected):
 847                 selectedNames = [
 848                         str(item.text(1))
 849                         for item in self._outputView.selectedItems()
 850                 ]
 851                 if selectedNames:
 852                         assert len(selectedNames) == 1, selectedNames
 853                         name = selectedNames[0]
 854                         self._select_output(name)
 855                 else:
 856                         pass
 857
 858
 859 class CategoryWindow(object):
 860
 861         def __init__(self, parent, app):
 862                 self._app = app
 863                 self._unitWindow = None
 864                 self._favoritesWindow = None
 865
 866                 self._categories = QtGui.QTreeWidget()
 867                 self._categories.setHeaderLabels(["Categories"])
 868                 self._categories.itemClicked.connect(self._on_category_clicked)
 869                 self._categories.setHeaderHidden(True)
 870                 self._categories.setRootIsDecorated(False)
 871                 self._categories.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
 872                 self._categories.setSelectionMode(QtGui.QAbstractItemView.SingleSelection)
 873                 if not constants.IS_MAEMO:
 874                         self._categories.setAlternatingRowColors(True)
 875                 for catName in unit_data.UNIT_CATEGORIES:
 876                         twi = QtGui.QTreeWidgetItem(self._categories)
 877                         twi.setText(0, catName)
 878
 879                 self._layout = QtGui.QVBoxLayout()
 880                 self._layout.addWidget(self._categories)
 881
 882                 centralWidget = QtGui.QWidget()
 883                 centralWidget.setLayout(self._layout)
 884
 885                 self._window = QtGui.QMainWindow(parent)
 886                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 887                 qui_utils.set_stackable(self._window, True)
 888                 self._window.setWindowTitle("%s - Categories" % constants.__pretty_app_name__)
 889                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 890                 self._window.setCentralWidget(centralWidget)
 891
 892                 self._chooseFavoritesAction = QtGui.QAction(None)
 893                 self._chooseFavoritesAction.setText("Select Favorites")
 894                 self._chooseFavoritesAction.setShortcut(QtGui.QKeySequence("CTRL+f"))
 895                 self._chooseFavoritesAction.triggered.connect(self._on_choose_favorites)
 896
 897                 self._app.showFavoritesAction.toggled.connect(self._on_show_favorites)
 898
 899                 self._closeWindowAction = QtGui.QAction(None)
 900                 self._closeWindowAction.setText("Close")
 901                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 902                 self._closeWindowAction.triggered.connect(self._on_close_window)
 903
 904                 if constants.IS_MAEMO:
 905                         fileMenu = self._window.menuBar().addMenu("&Units")
 906                         fileMenu.addAction(self._chooseFavoritesAction)
 907
 908                         viewMenu = self._window.menuBar().addMenu("&View")
 909                         viewMenu.addAction(self._app.showFavoritesAction)
 910                         viewMenu.addAction(self._app.condensedAction)
 911                         viewMenu.addSeparator()
 912                         viewMenu.addAction(self._app.jumpAction)
 913                         viewMenu.addAction(self._app.recentAction)
 914
 915                         self._window.addAction(self._closeWindowAction)
 916                         self._window.addAction(self._app.quitAction)
 917                         self._window.addAction(self._app.fullscreenAction)
 918                 else:
 919                         fileMenu = self._window.menuBar().addMenu("&Units")
 920                         fileMenu.addAction(self._chooseFavoritesAction)
 921                         fileMenu.addAction(self._closeWindowAction)
 922                         fileMenu.addAction(self._app.quitAction)
 923
 924                         viewMenu = self._window.menuBar().addMenu("&View")
 925                         viewMenu.addAction(self._app.showFavoritesAction)
 926                         viewMenu.addAction(self._app.condensedAction)
 927                         viewMenu.addSeparator()
 928                         viewMenu.addAction(self._app.jumpAction)
 929                         viewMenu.addAction(self._app.recentAction)
 930                         viewMenu.addSeparator()
 931                         viewMenu.addAction(self._app.fullscreenAction)
 932
 933                 self._window.addAction(self._app.logAction)
 934
 935                 self._update_favorites()
 936                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
 937                 self._window.show()
 938
 939         @property
 940         def window(self):
 941                 return self._window
 942
 943         def walk_children(self):
 944                 if self._unitWindow is not None:
 945                         yield self._unitWindow
 946                 if self._favoritesWindow is not None:
 947                         yield self._favoritesWindow
 948
 949         def show(self):
 950                 self._window.show()
 951                 for child in self.walk_children():
 952                         child.show()
 953
 954         def hide(self):
 955                 for child in self.walk_children():
 956                         child.hide()
 957                 self._window.hide()
 958
 959         def close(self):
 960                 for child in self.walk_children():
 961                         child.window.destroyed.disconnect(self._on_child_close)
 962                         child.close()
 963                 self._window.close()
 964
 965         def select_category(self, categoryName):
 966                 self._select_category(categoryName)
 967
 968                 self._categories.clearSelection()
 969                 i = unit_data.UNIT_CATEGORIES.index(categoryName)
 970                 rootIndex = self._categories.rootIndex()
 971                 currentIndex = self._categories.model().index(i, 0, rootIndex)
 972                 self._categories.scrollTo(currentIndex)
 973                 self._categories.topLevelItem(i).setSelected(True)
 974                 return self._unitWindow
 975
 976         def set_fullscreen(self, isFullscreen):
 977                 if isFullscreen:
 978                         self._window.showFullScreen()
 979                 else:
 980                         self._window.showNormal()
 981                 for child in self.walk_children():
 982                         child.set_fullscreen(isFullscreen)
 983
 984         def _select_category(self, categoryName):
 985                 for child in self.walk_children():
 986                         child.window.destroyed.disconnect(self._on_child_close)
 987                         child.close()
 988                 self._unitWindow = UnitWindow(self._window, categoryName, self._app)
 989                 self._unitWindow.window.destroyed.connect(self._on_child_close)
 990
 991         def _update_favorites(self):
 992                 if self._app.showFavoritesAction.isChecked():
 993                         assert self._categories.topLevelItemCount() == len(unit_data.UNIT_CATEGORIES)
 994                         for i, catName in enumerate(unit_data.UNIT_CATEGORIES):
 995                                 if catName in self._app.hiddenCategories:
 996                                         self._categories.setRowHidden(i, self._categories.rootIndex(), True)
 997                                 else:
 998                                         self._categories.setRowHidden(i, self._categories.rootIndex(), False)
 999                 else:
1000                         for i in xrange(self._categories.topLevelItemCount()):
1001                                 self._categories.setRowHidden(i, self._categories.rootIndex(), False)
1002
1003         @misc_utils.log_exception(_moduleLogger)
1004         def _on_show_favorites(self, checked = True):
1005                 if checked:
1006                         assert self._categories.topLevelItemCount() == len(unit_data.UNIT_CATEGORIES)
1007                         for i, catName in enumerate(unit_data.UNIT_CATEGORIES):
1008                                 if catName in self._app.hiddenCategories:
1009                                         self._categories.setRowHidden(i, self._categories.rootIndex(), True)
1010                 else:
1011                         for i in xrange(self._categories.topLevelItemCount()):
1012                                 self._categories.setRowHidden(i, self._categories.rootIndex(), False)
1013
1014         @misc_utils.log_exception(_moduleLogger)
1015         def _on_choose_favorites(self, obj = None):
1016                 assert self._favoritesWindow is None
1017                 import windows
1018                 self._favoritesWindow = windows.FavoritesWindow(
1019                         self._window,
1020                         self._app,
1021                         unit_data.UNIT_CATEGORIES,
1022                         self._app.hiddenCategories
1023                 )
1024                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
1025                 return self._favoritesWindow
1026
1027         @misc_utils.log_exception(_moduleLogger)
1028         def _on_close_favorites(self, obj = None):
1029                 self._favoritesWindow = None
1030                 self._update_favorites()
1031
1032         @misc_utils.log_exception(_moduleLogger)
1033         def _on_child_close(self, obj = None):
1034                 self._unitWindow = None
1035
1036         @misc_utils.log_exception(_moduleLogger)
1037         def _on_close_window(self, checked = True):
1038                 self.close()
1039
1040         @misc_utils.log_exception(_moduleLogger)
1041         def _on_category_clicked(self, item, columnIndex):
1042                 categoryName = unicode(item.text(0))
1043                 self.select_category(categoryName)
1044
1045
1046 class UnitData(object):
1047
1048         HEADERS = ["Name", "Value", "", "Unit"]
1049         ALIGNMENT = [QtCore.Qt.AlignLeft, QtCore.Qt.AlignRight, QtCore.Qt.AlignLeft, QtCore.Qt.AlignLeft]
1050         NAME_COLUMN = 0
1051         VALUE_COLUMN_0 = 1
1052         VALUE_COLUMN_1 = 2
1053         UNIT_COLUMN = 3
1054
1055         __slots__ = [
1056                 "_name", "_unit", "_description", "_conversion",
1057                 "_value", "_integerDisplay", "_fractionalDisplay",
1058         ]
1059
1060         def __init__(self, name, unit, description, conversion):
1061                 self._name = name
1062                 self._unit = unit
1063                 self._description = description
1064                 self._conversion = conversion
1065
1066                 self._value = 0.0
1067                 self._integerDisplay, self._fractionalDisplay = split_number(self._value)
1068
1069         @property
1070         def name(self):
1071                 return self._name
1072
1073         @property
1074         def value(self):
1075                 return self._value
1076
1077         def update_value(self, newValue):
1078                 self._value = newValue
1079                 self._integerDisplay, self._fractionalDisplay = split_number(newValue)
1080
1081         @property
1082         def unit(self):
1083                 return self._unit
1084
1085         @property
1086         def conversion(self):
1087                 return self._conversion
1088
1089         def data(self, column):
1090                 try:
1091                         return [self._name, self._integerDisplay, self._fractionalDisplay, self._unit][column]
1092                 except IndexError:
1093                         return None
1094
1095
1096 class UnitModel(QtCore.QAbstractItemModel):
1097
1098         def __init__(self, categoryName, parent=None):
1099                 super(UnitModel, self).__init__(parent)
1100                 self._categoryName = categoryName
1101                 self._unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
1102                 if self._categoryName == "Computer Numbers":
1103                         self._sanitize_value = self._sanitize_alpha_value
1104                 else:
1105                         self._sanitize_value = self._sanitize_numeric_value
1106
1107                 self._children = []
1108                 for key in unit_data.get_units(self._categoryName):
1109                         conversion, unit, description = self._unitData[key]
1110                         self._children.append(UnitData(key, unit, description, conversion))
1111                 self._sortSettings = None
1112
1113         @misc_utils.log_exception(_moduleLogger)
1114         def columnCount(self, parent):
1115                 if parent.isValid():
1116                         return 0
1117                 else:
1118                         return len(UnitData.HEADERS)
1119
1120         @misc_utils.log_exception(_moduleLogger)
1121         def data(self, index, role):
1122                 #if not index.isValid():
1123                 #       return None
1124
1125                 if role == QtCore.Qt.DisplayRole:
1126                         item = index.internalPointer()
1127                         if isinstance(item, UnitData):
1128                                 return item.data(index.column())
1129                         elif item is UnitData.HEADERS:
1130                                 return item[index.column()]
1131                 elif role == QtCore.Qt.TextAlignmentRole:
1132                         return UnitData.ALIGNMENT[index.column()]
1133                 else:
1134                         return None
1135
1136         @misc_utils.log_exception(_moduleLogger)
1137         def sort(self, column, order = QtCore.Qt.AscendingOrder):
1138                 self._sortSettings = column, order
1139                 isReverse = order == QtCore.Qt.AscendingOrder
1140                 if column == UnitData.NAME_COLUMN:
1141                         key_func = lambda item: item.name
1142                 elif column in [UnitData.VALUE_COLUMN_0, UnitData.VALUE_COLUMN_1]:
1143                         key_func = lambda item: item.value
1144                 elif column == UnitData.UNIT_COLUMN:
1145                         key_func = lambda item: item.unit
1146                 self._children.sort(key=key_func, reverse = isReverse)
1147
1148                 self._all_changed()
1149
1150         @misc_utils.log_exception(_moduleLogger)
1151         def flags(self, index):
1152                 if not index.isValid():
1153                         return QtCore.Qt.NoItemFlags
1154
1155                 return QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable
1156
1157         @misc_utils.log_exception(_moduleLogger)
1158         def headerData(self, section, orientation, role):
1159                 if orientation == QtCore.Qt.Horizontal and role == QtCore.Qt.DisplayRole:
1160                         return UnitData.HEADERS[section]
1161
1162                 return None
1163
1164         @misc_utils.log_exception(_moduleLogger)
1165         def index(self, row, column, parent):
1166                 #if not self.hasIndex(row, column, parent):
1167                 #       return QtCore.QModelIndex()
1168                 #elif parent.isValid():
1169                 #       return QtCore.QModelIndex()
1170
1171                 parentItem = UnitData.HEADERS
1172                 childItem = self._children[row]
1173                 if childItem:
1174                         return self.createIndex(row, column, childItem)
1175                 else:
1176                         return QtCore.QModelIndex()
1177
1178         @misc_utils.log_exception(_moduleLogger)
1179         def parent(self, index):
1180                 if not index.isValid():
1181                         return QtCore.QModelIndex()
1182
1183                 childItem = index.internalPointer()
1184                 if isinstance(childItem, UnitData):
1185                         return QtCore.QModelIndex()
1186                 elif childItem is UnitData.HEADERS:
1187                         return None
1188
1189         @misc_utils.log_exception(_moduleLogger)
1190         def rowCount(self, parent):
1191                 if 0 < parent.column():
1192                         return 0
1193
1194                 if not parent.isValid():
1195                         return len(self._children)
1196                 else:
1197                         return len(self._children)
1198
1199         def get_unit(self, index):
1200                 assert 0 <= index
1201                 return self._children[index]
1202
1203         def get_unit_names(self):
1204                 for child in self._children:
1205                         yield child.name
1206
1207         def index_unit(self, unitName):
1208                 for i, child in enumerate(self._children):
1209                         if child.name == unitName:
1210                                 return i
1211                 else:
1212                         raise RuntimeError("Unit not found")
1213
1214         def update_values(self, fromIndex, userInput):
1215                 value = self._sanitize_value(userInput)
1216                 func, arg = self._children[fromIndex].conversion
1217                 base = func.to_base(value, arg)
1218                 for i, child in enumerate(self._children):
1219                         func, arg = child.conversion
1220                         newValue = func.from_base(base, arg)
1221                         child.update_value(newValue)
1222
1223                 if (
1224                         self._sortSettings is not None and
1225                         self._sortSettings[0]  in [UnitData.VALUE_COLUMN_0, UnitData.VALUE_COLUMN_1]
1226                 ):
1227                         # Sort takes care of marking everything as changed
1228                         self.sort(*self._sortSettings)
1229                         return True
1230                 else:
1231                         self._values_changed()
1232                         return False
1233
1234         def __len__(self):
1235                 return len(self._children)
1236
1237         def _values_changed(self):
1238                 topLeft = self.createIndex(0, UnitData.VALUE_COLUMN_0, self._children[0])
1239                 bottomRight = self.createIndex(len(self._children)-1, UnitData.VALUE_COLUMN_1, self._children[-1])
1240                 self.dataChanged.emit(topLeft, bottomRight)
1241
1242         def _all_changed(self):
1243                 topLeft = self.createIndex(0, 0, self._children[0])
1244                 bottomRight = self.createIndex(len(self._children)-1, len(UnitData.HEADERS)-1, self._children[-1])
1245                 self.dataChanged.emit(topLeft, bottomRight)
1246
1247         def _sanitize_alpha_value(self, userEntry):
1248                 if userEntry:
1249                         value = userEntry
1250                 else:
1251                         value = '0'
1252                 return value
1253
1254         def _sanitize_numeric_value(self, userEntry):
1255                 if userEntry:
1256                         value = float(userEntry)
1257                 else:
1258                         value = 0.0
1259                 return value
1260
1261
1262 class UnitWindow(object):
1263
1264         def __init__(self, parent, category, app):
1265                 self._app = app
1266                 self._categoryName = category
1267                 self._selectedIndex = 0
1268                 self._favoritesWindow = None
1269
1270                 self._selectedUnitName = QtGui.QLabel()
1271                 self._selectedUnitValue = QtGui.QLineEdit()
1272                 self._selectedUnitValue.textEdited.connect(self._on_value_edited)
1273                 qui_utils.mark_numbers_preferred(self._selectedUnitValue)
1274                 self._selectedUnitSymbol = QtGui.QLabel()
1275                 self._updateDelayTimer = QtCore.QTimer()
1276                 self._updateDelayTimer.setInterval(100)
1277                 self._updateDelayTimer.setSingleShot(True)
1278                 self._updateDelayTimer.timeout.connect(self._on_value_edited_delayed)
1279
1280                 self._selectedUnitLayout = QtGui.QHBoxLayout()
1281                 self._selectedUnitLayout.addWidget(self._selectedUnitName)
1282                 self._selectedUnitLayout.addWidget(self._selectedUnitValue)
1283                 self._selectedUnitLayout.addWidget(self._selectedUnitSymbol)
1284
1285                 self._unitsModel = UnitModel(self._categoryName)
1286                 self._unitsView = QtGui.QTreeView()
1287                 self._unitsView.setModel(self._unitsModel)
1288                 self._unitsView.setUniformRowHeights(True)
1289                 self._unitsView.setSortingEnabled(True)
1290                 self._unitsView.setRootIsDecorated(False)
1291                 self._unitsView.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
1292                 self._unitsView.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
1293                 self._unitsView.setSelectionMode(QtGui.QAbstractItemView.SingleSelection)
1294                 self._unitsView.setHeaderHidden(True)
1295                 self._unitsView.clicked.connect(self._on_unit_clicked)
1296                 if not constants.IS_MAEMO:
1297                         self._unitsView.setAlternatingRowColors(True)
1298
1299                 viewHeader = self._unitsView.header()
1300                 viewHeader.setSortIndicatorShown(True)
1301                 viewHeader.setClickable(True)
1302
1303                 viewHeader.setResizeMode(UnitData.NAME_COLUMN, QtGui.QHeaderView.ResizeToContents)
1304                 viewHeader.setResizeMode(UnitData.VALUE_COLUMN_0, QtGui.QHeaderView.ResizeToContents)
1305                 viewHeader.setResizeMode(UnitData.VALUE_COLUMN_1, QtGui.QHeaderView.ResizeToContents)
1306                 viewHeader.setResizeMode(UnitData.UNIT_COLUMN, QtGui.QHeaderView.ResizeToContents)
1307                 viewHeader.setStretchLastSection(False)
1308
1309                 # Trying to make things faster by locking in the initial size of the immutable columns
1310                 nameSize = min(viewHeader.sectionSize(UnitData.NAME_COLUMN), 300)
1311                 viewHeader.setResizeMode(UnitData.NAME_COLUMN, QtGui.QHeaderView.Fixed)
1312                 viewHeader.resizeSection(UnitData.NAME_COLUMN, nameSize)
1313                 unitSize = min(viewHeader.sectionSize(UnitData.UNIT_COLUMN), 150)
1314                 viewHeader.setResizeMode(UnitData.UNIT_COLUMN, QtGui.QHeaderView.Fixed)
1315                 viewHeader.resizeSection(UnitData.UNIT_COLUMN, unitSize)
1316
1317                 self._layout = QtGui.QVBoxLayout()
1318                 self._layout.addLayout(self._selectedUnitLayout)
1319                 self._layout.addWidget(self._unitsView)
1320
1321                 centralWidget = QtGui.QWidget()
1322                 centralWidget.setLayout(self._layout)
1323
1324                 self._window = QtGui.QMainWindow(parent)
1325                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
1326                 qui_utils.set_stackable(self._window, True)
1327                 self._window.setWindowTitle("%s - %s" % (constants.__pretty_app_name__, category))
1328                 self._window.setWindowIcon(QtGui.QIcon(app.appIconPath))
1329                 self._window.setCentralWidget(centralWidget)
1330
1331                 defaultUnitName = self._app.get_recent_unit(self._categoryName)
1332                 if defaultUnitName:
1333                         self.select_unit(defaultUnitName)
1334                 else:
1335                         self._select_unit(0)
1336
1337                 if self._app.sortByNameAction.isChecked():
1338                         sortColumn = UnitData.NAME_COLUMN
1339                 elif self._app.sortByValueAction.isChecked():
1340                         sortColumn = UnitData.VALUE_COLUMN_0
1341                 elif self._app.sortByUnitAction.isChecked():
1342                         sortColumn = UnitData.UNIT_COLUMN
1343                 else:
1344                         raise RuntimeError("No sort column selected")
1345                 if sortColumn != 0:
1346                         # By default it sorts by he first column (name)
1347                         self._unitsModel.sort(sortColumn)
1348
1349                 self._chooseFavoritesAction = QtGui.QAction(None)
1350                 self._chooseFavoritesAction.setText("Select Favorites")
1351                 self._chooseFavoritesAction.setShortcut(QtGui.QKeySequence("CTRL+f"))
1352                 self._chooseFavoritesAction.triggered.connect(self._on_choose_favorites)
1353
1354                 self._app.showFavoritesAction.toggled.connect(self._on_show_favorites)
1355
1356                 self._previousUnitAction = QtGui.QAction(None)
1357                 self._previousUnitAction.setText("Previous Unit")
1358                 self._previousUnitAction.setShortcut(QtGui.QKeySequence("Up"))
1359                 self._previousUnitAction.triggered.connect(self._on_previous_unit)
1360
1361                 self._nextUnitAction = QtGui.QAction(None)
1362                 self._nextUnitAction.setText("Next Unit")
1363                 self._nextUnitAction.setShortcut(QtGui.QKeySequence("Down"))
1364                 self._nextUnitAction.triggered.connect(self._on_next_unit)
1365
1366                 self._closeWindowAction = QtGui.QAction(None)
1367                 self._closeWindowAction.setText("Close Window")
1368                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
1369                 self._closeWindowAction.triggered.connect(self._on_close_window)
1370
1371                 if constants.IS_MAEMO:
1372                         self._window.addAction(self._closeWindowAction)
1373                         self._window.addAction(self._app.quitAction)
1374                         self._window.addAction(self._app.fullscreenAction)
1375
1376                         fileMenu = self._window.menuBar().addMenu("&Units")
1377                         fileMenu.addAction(self._chooseFavoritesAction)
1378
1379                         viewMenu = self._window.menuBar().addMenu("&View")
1380                         viewMenu.addAction(self._app.showFavoritesAction)
1381                         viewMenu.addAction(self._app.condensedAction)
1382                         viewMenu.addSeparator()
1383                         viewMenu.addAction(self._app.sortByNameAction)
1384                         viewMenu.addAction(self._app.sortByValueAction)
1385                         viewMenu.addAction(self._app.sortByUnitAction)
1386                         viewMenu.addSeparator()
1387                         viewMenu.addAction(self._app.jumpAction)
1388                         viewMenu.addAction(self._app.recentAction)
1389                 else:
1390                         fileMenu = self._window.menuBar().addMenu("&Units")
1391                         fileMenu.addAction(self._chooseFavoritesAction)
1392                         fileMenu.addAction(self._closeWindowAction)
1393                         fileMenu.addAction(self._app.quitAction)
1394
1395                         viewMenu = self._window.menuBar().addMenu("&View")
1396                         viewMenu.addAction(self._app.showFavoritesAction)
1397                         viewMenu.addAction(self._app.condensedAction)
1398                         viewMenu.addSeparator()
1399                         viewMenu.addAction(self._app.sortByNameAction)
1400                         viewMenu.addAction(self._app.sortByValueAction)
1401                         viewMenu.addAction(self._app.sortByUnitAction)
1402                         viewMenu.addSeparator()
1403                         viewMenu.addAction(self._app.jumpAction)
1404                         viewMenu.addAction(self._app.recentAction)
1405                         viewMenu.addSeparator()
1406                         viewMenu.addAction(self._app.fullscreenAction)
1407
1408                 self._app.sortByNameAction.triggered.connect(self._on_sort_by_name)
1409                 self._app.sortByValueAction.triggered.connect(self._on_sort_by_value)
1410                 self._app.sortByUnitAction.triggered.connect(self._on_sort_by_unit)
1411
1412                 self._window.addAction(self._app.logAction)
1413                 self._window.addAction(self._nextUnitAction)
1414                 self._window.addAction(self._previousUnitAction)
1415                 self._window.addAction(self._chooseFavoritesAction)
1416
1417                 self._update_favorites()
1418                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
1419                 self._window.show()
1420
1421         @property
1422         def window(self):
1423                 return self._window
1424
1425         def show(self):
1426                 for child in self.walk_children():
1427                         child.hide()
1428                 self._window.show()
1429
1430         def hide(self):
1431                 for child in self.walk_children():
1432                         child.hide()
1433                 self._window.hide()
1434
1435         def close(self):
1436                 for child in self.walk_children():
1437                         child.window.destroyed.disconnect(self._on_child_close)
1438                         child.close()
1439                 self._window.close()
1440
1441         def set_fullscreen(self, isFullscreen):
1442                 if isFullscreen:
1443                         self._window.showFullScreen()
1444                 else:
1445                         self._window.showNormal()
1446
1447         def select_unit(self, unitName):
1448                 index = self._unitsModel.index_unit(unitName)
1449                 self._select_unit(index)
1450
1451                 qindex = self._unitsModel.createIndex(index, 0, self._unitsModel.get_unit(index))
1452                 self._unitsView.scrollTo(qindex)
1453
1454         def walk_children(self):
1455                 if self._favoritesWindow is not None:
1456                         yield self._favoritesWindow
1457
1458         def _select_unit(self, index):
1459                 unit = self._unitsModel.get_unit(index)
1460                 self._selectedUnitName.setText(unit.name)
1461                 self._selectedUnitValue.setText(str(unit.value))
1462                 self._selectedUnitSymbol.setText(unit.unit)
1463
1464                 self._selectedIndex = index
1465                 self._app.add_recent(self._categoryName, self._unitsModel.get_unit(index).name)
1466
1467         def _update_favorites(self, force = False):
1468                 if self._app.showFavoritesAction.isChecked():
1469                         unitNames = list(self._unitsModel.get_unit_names())
1470                         hiddenUnits = self._app.get_hidden_units(self._categoryName)
1471                         for i, unitName in enumerate(unitNames):
1472                                 if unitName in hiddenUnits:
1473                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), True)
1474                                 else:
1475                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), False)
1476                 else:
1477                         if force:
1478                                 for i in xrange(len(self._unitsModel)):
1479                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), False)
1480
1481         @misc_utils.log_exception(_moduleLogger)
1482         def _on_show_favorites(self, checked = True):
1483                 if checked:
1484                         unitNames = list(self._unitsModel.get_unit_names())
1485                         hiddenUnits = self._app.get_hidden_units(self._categoryName)
1486                         for i, unitName in enumerate(unitNames):
1487                                 if unitName in hiddenUnits:
1488                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), True)
1489                 else:
1490                         for i in xrange(len(self._unitsModel)):
1491                                 self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), False)
1492
1493         @misc_utils.log_exception(_moduleLogger)
1494         def _on_choose_favorites(self, obj = None):
1495                 assert self._favoritesWindow is None
1496                 import windows
1497                 self._favoritesWindow = windows.FavoritesWindow(
1498                         self._window,
1499                         self._app,
1500                         unit_data.get_units(self._categoryName),
1501                         self._app.get_hidden_units(self._categoryName)
1502                 )
1503                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
1504                 return self._favoritesWindow
1505
1506         @misc_utils.log_exception(_moduleLogger)
1507         def _on_close_favorites(self, obj = None):
1508                 self._favoritesWindow = None
1509                 self._update_favorites(force=True)
1510
1511         @misc_utils.log_exception(_moduleLogger)
1512         def _on_previous_unit(self, checked = True):
1513                 index = self._selectedIndex - 1
1514                 unitData = self._unitsModel.get_unit(index)
1515                 unitName = unitData.name
1516
1517                 if self._app.showFavoritesAction.isChecked():
1518                         hiddenUnits = self._app.get_hidden_units(self._categoryName)
1519                         while unitName in hiddenUnits:
1520                                 index -= 1
1521                                 unitData = self._unitsModel.get_unit(index)
1522                                 unitName = unitData.name
1523
1524                 self.select_unit(unitName)
1525
1526         @misc_utils.log_exception(_moduleLogger)
1527         def _on_next_unit(self, checked = True):
1528                 index = self._selectedIndex + 1
1529                 unitData = self._unitsModel.get_unit(index)
1530                 unitName = unitData.name
1531
1532                 if self._app.showFavoritesAction.isChecked():
1533                         hiddenUnits = self._app.get_hidden_units(self._categoryName)
1534                         while unitName in hiddenUnits:
1535                                 index += 1
1536                                 unitData = self._unitsModel.get_unit(index)
1537                                 unitName = unitData.name
1538
1539                 self.select_unit(unitName)
1540
1541         @misc_utils.log_exception(_moduleLogger)
1542         def _on_close_window(self, checked = True):
1543                 self.close()
1544
1545         @misc_utils.log_exception(_moduleLogger)
1546         def _on_sort_by_name(self, checked = False):
1547                 self._unitsModel.sort(UnitData.NAME_COLUMN, QtCore.Qt.DescendingOrder)
1548
1549         @misc_utils.log_exception(_moduleLogger)
1550         def _on_sort_by_value(self, checked = False):
1551                 self._unitsModel.sort(UnitData.VALUE_COLUMN_0)
1552
1553         @misc_utils.log_exception(_moduleLogger)
1554         def _on_sort_by_unit(self, checked = False):
1555                 self._unitsModel.sort(UnitData.UNIT_COLUMN, QtCore.Qt.DescendingOrder)
1556
1557         @misc_utils.log_exception(_moduleLogger)
1558         def _on_unit_clicked(self, index):
1559                 self._select_unit(index.row())
1560
1561         @misc_utils.log_exception(_moduleLogger)
1562         def _on_value_edited(self, *args):
1563                 if not self._updateDelayTimer.isActive():
1564                         self._updateDelayTimer.start()
1565
1566         @misc_utils.log_exception(_moduleLogger)
1567         def _on_value_edited_delayed(self, *args):
1568                 userInput = str(self._selectedUnitValue.text())
1569                 orderChanged = self._unitsModel.update_values(self._selectedIndex, userInput)
1570                 if orderChanged:
1571                         self._update_favorites()
1572
1573
1574 def run_gonvert():
1575         try:
1576                 os.makedirs(linux_utils.get_resource_path("config", constants.__app_name__))
1577         except OSError, e:
1578                 if e.errno != 17:
1579                         raise
1580         try:
1581                 os.makedirs(linux_utils.get_resource_path("cache", constants.__app_name__))
1582         except OSError, e:
1583                 if e.errno != 17:
1584                         raise
1585         try:
1586                 os.makedirs(linux_utils.get_resource_path("data", constants.__app_name__))
1587         except OSError, e:
1588                 if e.errno != 17:
1589                         raise
1590
1591         logPath = linux_utils.get_resource_path("cache", constants.__app_name__, "%s.log" % constants.__app_name__)
1592         logFormat = '(%(relativeCreated)5d) %(levelname)-5s %(threadName)s.%(name)s.%(funcName)s: %(message)s'
1593         logging.basicConfig(level=logging.DEBUG, format=logFormat)
1594         rotating = logging.handlers.RotatingFileHandler(logPath, maxBytes=512*1024, backupCount=1)
1595         rotating.setFormatter(logging.Formatter(logFormat))
1596         root = logging.getLogger()
1597         root.addHandler(rotating)
1598         _moduleLogger.info("%s %s-%s" % (constants.__app_name__, constants.__version__, constants.__build__))
1599         _moduleLogger.info("OS: %s" % (os.uname()[0], ))
1600         _moduleLogger.info("Kernel: %s (%s) for %s" % os.uname()[2:])
1601         _moduleLogger.info("Hostname: %s" % os.uname()[1])
1602
1603         app = QtGui.QApplication([])
1604         handle = Gonvert(app)
1605         if constants.PROFILE_STARTUP:
1606                 return 0
1607         else:
1608                 return app.exec_()
1609
1610
1611 if __name__ == "__main__":
1612         import sys
1613         val = run_gonvert()
1614         sys.exit(val)