wizard/BModulePage.py

   1 #!/usr/bin/env python
   2 # encoding: utf-8
   3 #
   4 # This file is part of BeRTOS.
   5 #
   6 # Bertos is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 2 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program; if not, write to the Free Software
  18 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19 #
  20 # As a special exception, you may use this file as part of a free software
  21 # library without restriction.  Specifically, if other files instantiate
  22 # templates or use macros or inline functions from this file, or you compile
  23 # this file and link it with other files to produce an executable, this
  24 # file does not by itself cause the resulting executable to be covered by
  25 # the GNU General Public License.  This exception does not however
  26 # invalidate any other reasons why the executable file might be covered by
  27 # the GNU General Public License.
  28 #
  29 # Copyright 2008 Develer S.r.l. (http://www.develer.com/)
  30 #
  31 #
  32 # Author: Lorenzo Berni <duplo@develer.com>
  33 #
  34
  35 import os
  36
  37 from PyQt4.QtCore import *
  38 from PyQt4.QtGui import *
  39 from BWizardPage import *
  40 import bertos_utils
  41
  42 from bertos_utils import SupportedException
  43 from DefineException import *
  44 from const import *
  45
  46 class BModulePage(BWizardPage):
  47     """
  48     Page of the wizard that permits to select and configurate the BeRTOS modules.
  49     """
  50
  51     def __init__(self):
  52         BWizardPage.__init__(self, UI_LOCATION + "/module_select.ui")
  53         self.setTitle(self.tr("Configure the BeRTOS modules"))
  54         self._control_group = QControlGroup()
  55         ## special connection needed for the QControlGroup
  56         self.connect(self._control_group, SIGNAL("stateChanged"), self.saveValue)
  57
  58     ## Overloaded BWizardPage methods ##
  59
  60     def setupUi(self):
  61         """
  62         Overload of BWizardPage setupUi method.
  63         """
  64         self.pageContent.moduleTree.clear()
  65         self.pageContent.moduleTree.setHeaderHidden(True)
  66         self.pageContent.propertyTable.horizontalHeader().setResizeMode(QHeaderView.Stretch)
  67         self.pageContent.propertyTable.horizontalHeader().setVisible(False)
  68         self.pageContent.propertyTable.verticalHeader().setResizeMode(QHeaderView.ResizeToContents)
  69         self.pageContent.propertyTable.verticalHeader().setVisible(False)
  70         self.pageContent.propertyTable.setColumnCount(2)
  71         self.pageContent.propertyTable.setRowCount(0)
  72         self.pageContent.moduleLabel.setVisible(False)
  73         self.pageContent.warningLabel.setVisible(False)
  74
  75     def connectSignals(self):
  76         """
  77         Overload of the BWizardPage connectSignals method.
  78         """
  79         self.connect(self.pageContent.moduleTree, SIGNAL("itemPressed(QTreeWidgetItem*, int)"), self.fillPropertyTable)
  80         self.connect(self.pageContent.moduleTree, SIGNAL("itemPressed(QTreeWidgetItem*, int)"), self.moduleClicked)
  81         self.connect(self.pageContent.moduleTree, SIGNAL("itemChanged(QTreeWidgetItem*, int)"), self.dependencyCheck)
  82
  83     def reloadData(self, previous_id=None):
  84         """
  85         Overload of the BWizardPage reloadData method.
  86         """
  87         # Check if the user are approaching this page from the previous or the
  88         # next one.
  89         if previous_id is None or previous_id < self.wizard().currentId():
  90             try:
  91                 QApplication.instance().setOverrideCursor(Qt.WaitCursor)
  92                 self.setupUi()
  93                 self.loadModuleData()
  94                 self.fillModuleTree()
  95             finally:
  96                 QApplication.instance().restoreOverrideCursor()
  97
  98     ####
  99
 100     ## Slots ##
 101
 102     def moduleClicked(self, item, column):
 103         self.setBold(item, False)
 104
 105     def fillPropertyTable(self):
 106         """
 107         Slot called when the user selects a module from the module tree.
 108         Fills the property table using the configuration parameters defined in
 109         the source tree.
 110         """
 111         module = self.currentModule()
 112         if module:
 113             try:
 114                 supported = bertos_utils.isSupported(self.project, module=module)
 115             except SupportedException, e:
 116                 self.exceptionOccurred(self.tr("Error evaluating \"%1\" for module %2").arg(e.support_string).arg(module))
 117                 supported = True
 118             self._control_group.clear()
 119             configuration = self.projectInfo("MODULES")[module]["configuration"]
 120             module_description = self.projectInfo("MODULES")[module]["description"]
 121             self.pageContent.moduleLabel.setText(module_description)
 122             self.pageContent.moduleLabel.setVisible(True)
 123             if not supported:
 124                 self.pageContent.warningLabel.setVisible(True)
 125                 selected_cpu = self.projectInfo("CPU_NAME")
 126                 self.pageContent.warningLabel.setText(self.tr("<font color='#FF0000'>Warning: the selected module, \
 127                     is not completely supported by the %1.</font>").arg(selected_cpu))
 128             else:
 129                 self.pageContent.warningLabel.setVisible(False)
 130             self.pageContent.propertyTable.clear()
 131             self.pageContent.propertyTable.setRowCount(0)
 132             if configuration != "":
 133                 configurations = self.projectInfo("CONFIGURATIONS")[configuration]
 134                 param_list = sorted(configurations["paramlist"])
 135                 index = 0
 136                 for i, property in param_list:
 137                     if "type" in configurations[property]["informations"] and configurations[property]["informations"]["type"] == "autoenabled":
 138                         # Doesn't show the hidden fields
 139                         continue
 140                     try:
 141                         param_supported = bertos_utils.isSupported(self.project, property_id=(configuration, property))
 142                     except SupportedException, e:
 143                         self.exceptionOccurred(self.tr("Error evaluating \"%1\" for parameter %2").arg(e.support_string).arg(property))
 144                         param_supported = True
 145                     if not param_supported:
 146                         # Doesn't show the unsupported parameters
 147                         continue
 148                     # Set the row count to the current index + 1
 149                     self.pageContent.propertyTable.setRowCount(index + 1)
 150                     item = QTableWidgetItem(configurations[property]["brief"])
 151                     item.setFlags(item.flags() & ~Qt.ItemIsSelectable)
 152                     item.setToolTip(property)
 153                     item.setData(Qt.UserRole, qvariant_converter.convertString(property))
 154                     self.pageContent.propertyTable.setItem(index, 0, item)
 155                     if "type" in configurations[property]["informations"] and configurations[property]["informations"]["type"] == "boolean":
 156                         self.insertCheckBox(index, configurations[property]["value"])
 157                     elif "type" in configurations[property]["informations"] and configurations[property]["informations"]["type"] == "enum":
 158                         self.insertComboBox(index, configurations[property]["value"], configurations[property]["informations"]["value_list"])
 159                     elif "type" in configurations[property]["informations"] and configurations[property]["informations"]["type"] == "int":
 160                         self.insertSpinBox(index, configurations[property]["value"], configurations[property]["informations"])
 161                     else:
 162                         # Not defined type, rendered as a text field
 163                         self.pageContent.propertyTable.setItem(index, 1, QTableWidgetItem(configurations[property]["value"]))
 164                     index += 1
 165             if self.pageContent.propertyTable.rowCount() == 0:
 166                 module_label = self.pageContent.moduleLabel.text()
 167                 module_label += "\n\nNo configuration needed."
 168                 self.pageContent.moduleLabel.setText(module_label)
 169         else:
 170             self.pageContent.moduleLabel.setText("")
 171             self.pageContent.moduleLabel.setVisible(False)
 172             self.pageContent.propertyTable.clear()
 173             self.pageContent.propertyTable.setRowCount(0)
 174
 175     def dependencyCheck(self, item):
 176         """
 177         Checks the dependencies of the module associated with the given item.
 178         """
 179         checked = False
 180         module = unicode(item.text(0))
 181         if item.checkState(0) == Qt.Checked:
 182             self.moduleSelected(module)
 183         else:
 184             self.moduleUnselected(module)
 185             self.removeFileDependencies(module)
 186
 187     def showPropertyDescription(self):
 188         """
 189         Slot called when the property selection changes. Shows the description
 190         of the selected property.
 191         """
 192         self.resetPropertyDescription()
 193         configurations = self.currentModuleConfigurations()
 194         if self.currentProperty() in configurations:
 195             description = configurations[self.currentProperty()]["brief"]
 196             name = self.currentProperty()
 197             self.currentPropertyItem().setText(description + "\n" + name)
 198
 199     def saveValue(self, index):
 200         """
 201         Slot called when the user modifies one of the configuration parameters.
 202         It stores the new value."""
 203         property = qvariant_converter.getString(self.pageContent.propertyTable.item(index, 0).data(Qt.UserRole))
 204         configuration = self.projectInfo("MODULES")[self.currentModule()]["configuration"]
 205         configurations = self.projectInfo("CONFIGURATIONS")
 206         if "type" not in configurations[configuration][property]["informations"] or configurations[configuration][property]["informations"]["type"] == "int":
 207             configurations[configuration][property]["value"] = unicode(int(self.pageContent.propertyTable.cellWidget(index, 1).value()))
 208         elif configurations[configuration][property]["informations"]["type"] == "enum":
 209             configurations[configuration][property]["value"] = unicode(self.pageContent.propertyTable.cellWidget(index, 1).currentText())
 210         elif configurations[configuration][property]["informations"]["type"] == "boolean":
 211             if self.pageContent.propertyTable.cellWidget(index, 1).isChecked():
 212                 configurations[configuration][property]["value"] = "1"
 213             else:
 214                 configurations[configuration][property]["value"] = "0"
 215         self.setProjectInfo("CONFIGURATIONS", configurations)
 216         if self.moduleItem(self.currentModule()).checkState(0) == Qt.Checked:
 217             self.dependencyCheck(self.moduleItem(self.currentModule()))
 218
 219     ####
 220
 221     def loadModuleData(self):
 222         """
 223         Loads the module data.
 224         """
 225         # Do not load the module data again when the Wizard is in editing mode
 226         # or when it's working on a preset.
 227         if not self.project.edit and not self.project.from_preset:
 228             # Load the module data every time so that if the user changed the cpu
 229             # the right configurations are picked up.
 230             try:
 231                 self.project.loadModuleData()
 232             except ModuleDefineException, e:
 233                 self.exceptionOccurred(self.tr("Error parsing line '%2' in file %1").arg(e.path).arg(e.line))
 234             except EnumDefineException, e:
 235                 self.exceptionOccurred(self.tr("Error parsing line '%2' in file %1").arg(e.path).arg(e.line))
 236             except ConfigurationDefineException, e:
 237                 self.exceptionOccurred(self.tr("Error parsing line '%2' in file %1").arg(e.path).arg(e.line))
 238
 239     def fillModuleTree(self):
 240         """
 241         Fills the module tree with the module entries separated in categories.
 242         """
 243         self.pageContent.moduleTree.clear()
 244         modules = self.projectInfo("MODULES")
 245         if not modules:
 246             return
 247         categories = {}
 248         for module, information in modules.items():
 249             if information["category"] not in categories:
 250                 categories[information["category"]] = []
 251             categories[information["category"]].append(module)
 252         for category, module_list in categories.items():
 253             item = QTreeWidgetItem(QStringList([category]))
 254             for module in module_list:
 255                 enabled = modules[module]["enabled"]
 256                 module_item = QTreeWidgetItem(item, QStringList([module]))
 257                 try:
 258                     supported = bertos_utils.isSupported(self.project, module=module)
 259                 except SupportedException, e:
 260                     self.exceptionOccurred(self.tr("Error evaluating \"%1\" for module %2").arg(e.support_string).arg(module))
 261                     supported = True
 262                 if not supported:
 263                     module_item.setForeground(0, QBrush(QColor(Qt.red)))
 264                 if enabled:
 265                     module_item.setCheckState(0, Qt.Checked)
 266                 else:
 267                     module_item.setCheckState(0, Qt.Unchecked)
 268             self.pageContent.moduleTree.addTopLevelItem(item)
 269         self.pageContent.moduleTree.sortItems(0, Qt.AscendingOrder)
 270         self.fillPropertyTable()
 271
 272     def insertCheckBox(self, index, value):
 273         """
 274         Inserts in the table at index a checkbox for a boolean property setted
 275         to value.
 276         """
 277         check_box = QCheckBox()
 278         self.pageContent.propertyTable.setCellWidget(index, 1, check_box)
 279         if value == "1":
 280             check_box.setChecked(True)
 281         else:
 282             check_box.setChecked(False)
 283         self._control_group.addControl(index, check_box)
 284
 285     def insertComboBox(self, index, value, value_list):
 286         """
 287         Inserts in the table at index a combobox for an enum property setted
 288         to value.
 289         """
 290         try:
 291             enum = self.projectInfo("LISTS")[value_list]
 292             combo_box = QComboBox()
 293             self.pageContent.propertyTable.setCellWidget(index, 1, combo_box)
 294             for i, element in enumerate(enum):
 295                 combo_box.addItem(element)
 296                 if element == value:
 297                     combo_box.setCurrentIndex(i)
 298             self._control_group.addControl(index, combo_box)
 299         except KeyError:
 300             self.exceptionOccurred(self.tr("Define list \"%1\" not found. Check definition files.").arg(value_list))
 301             self.pageContent.propertyTable.setItem(index, 1, QTableWidgetItem(value))
 302
 303     def insertSpinBox(self, index, value, informations):
 304         """
 305         Inserts in the table at index a spinbox for an int, a long or an unsigned
 306         long property setted to value.
 307         """
 308         # int, long or undefined type property
 309         spin_box = None
 310         if bertos_utils.isLong(informations) or bertos_utils.isUnsignedLong(informations):
 311             spin_box = QDoubleSpinBox()
 312             spin_box.setDecimals(0)
 313         else:
 314             spin_box = QSpinBox()
 315         self.pageContent.propertyTable.setCellWidget(index, 1, spin_box)
 316         minimum = -32768
 317         maximum = 32767
 318         suff = ""
 319         if bertos_utils.isLong(informations):
 320             minimum = -2147483648
 321             maximum = 2147483647
 322             suff = "L"
 323         elif bertos_utils.isUnsigned(informations):
 324             minimum = 0
 325             maximum = 65535
 326             suff = "U"
 327         elif bertos_utils.isUnsignedLong(informations):
 328             minimum = 0
 329             maximum = 4294967295
 330             suff = "UL"
 331         if "min" in informations:
 332             minimum = int(informations["min"])
 333         if "max" in informations:
 334             maximum = int(informations["max"])
 335         spin_box.setRange(minimum, maximum)
 336         spin_box.setSuffix(suff)
 337         spin_box.setValue(int(value.replace("L", "").replace("U", "")))
 338         self._control_group.addControl(index, spin_box)
 339
 340
 341     def currentModule(self):
 342         """
 343         Retuns the current module name.
 344         """
 345         current_module = self.pageContent.moduleTree.currentItem()
 346         # return only the child items
 347         if current_module and current_module.parent():
 348             return unicode(current_module.text(0))
 349         else:
 350             return None
 351
 352     def moduleItem(self, module):
 353         for top_level_index in range(self.pageContent.moduleTree.topLevelItemCount()):
 354             top_level_item = self.pageContent.moduleTree.topLevelItem(top_level_index)
 355             for child_index in range(top_level_item.childCount()):
 356                 child_item = top_level_item.child(child_index)
 357                 if unicode(child_item.text(0)) == module:
 358                     return child_item
 359         return None
 360
 361     def currentModuleConfigurations(self):
 362         """
 363         Returns the current module configuration.
 364         """
 365         return self.configurations(self.currentModule())
 366
 367     def currentProperty(self):
 368         """
 369         Rerturns the current property from the property table.
 370         """
 371         return qvariant_converter.getString(self.pageContent.propertyTable.item(self.pageContent.propertyTable.currentRow(), 0).data(Qt.UserRole))
 372
 373     def currentPropertyItem(self):
 374         """
 375         Returns the QTableWidgetItem of the current property.
 376         """
 377         return self.pageContent.propertyTable.item(self.pageContent.propertyTable.currentRow(), 0)
 378
 379     def configurations(self, module):
 380         """
 381         Returns the configuration for the selected module.
 382         """
 383         configuration = []
 384         if module:
 385             # On linux platform it seems that the behaviour of the focus
 386             # changing is a bit different from the mac one. So if module is
 387             # None then no configurations should be returned.
 388             configuration = self.projectInfo("MODULES")[module]["configuration"]
 389         if len(configuration) > 0:
 390             return self.projectInfo("CONFIGURATIONS")[configuration]
 391         else:
 392             return {}
 393
 394     def resetPropertyDescription(self):
 395         """
 396         Resets the label for each property table entry.
 397         """
 398         for index in range(self.pageContent.propertyTable.rowCount()):
 399             property_name = qvariant_converter.getString(self.pageContent.propertyTable.item(index, 0).data(Qt.UserRole))
 400             # Awful solution! Needed because if the user change the module, the selection changed...
 401             if property_name not in self.currentModuleConfigurations():
 402                 break
 403             self.pageContent.propertyTable.item(index, 0).setText(self.currentModuleConfigurations()[property_name]['brief'])
 404
 405     def setBold(self, item, bold):
 406         self.pageContent.moduleTree.blockSignals(True)
 407         font = item.font(0)
 408         font.setBold(bold)
 409         item.setFont(0, font)
 410         self.pageContent.moduleTree.blockSignals(False)
 411
 412     def isBold(self, item):
 413         return item.font(0).bold()
 414
 415     def moduleSelected(self, selectedModule):
 416         """
 417         Resolves the selection dependencies.
 418         """
 419         try:
 420             qApp.setOverrideCursor(Qt.WaitCursor)
 421             modules = self.projectInfo("MODULES")
 422             modules[selectedModule]["enabled"] = True
 423             self.setProjectInfo("MODULES", modules)
 424             depends = self.projectInfo("MODULES")[selectedModule]["depends"]
 425             unsatisfied = []
 426             if self.pageContent.automaticFix.isChecked():
 427                 unsatisfied = self.selectDependencyCheck(selectedModule)
 428             if len(unsatisfied) > 0:
 429                 for module in unsatisfied:
 430                     modules = self.projectInfo("MODULES")
 431                     modules[module]["enabled"] = True
 432                 for category in range(self.pageContent.moduleTree.topLevelItemCount()):
 433                     item = self.pageContent.moduleTree.topLevelItem(category)
 434                     for child in range(item.childCount()):
 435                         if unicode(item.child(child).text(0)) in unsatisfied:
 436                             self.setBold(item.child(child), True)
 437                             self.setBold(item, True)
 438                             item.child(child).setCheckState(0, Qt.Checked)
 439         finally:
 440             qApp.restoreOverrideCursor()
 441
 442     def moduleUnselected(self, unselectedModule):
 443         """
 444         Resolves the unselection dependencies.
 445         """
 446         try:
 447             qApp.setOverrideCursor(Qt.WaitCursor)
 448             modules = self.projectInfo("MODULES")
 449             modules[unselectedModule]["enabled"] = False
 450             self.setProjectInfo("MODULES", modules)
 451             unsatisfied = []
 452             unsatisfied_params = []
 453             if self.pageContent.automaticFix.isChecked():
 454                 unsatisfied, unsatisfied_params = self.unselectDependencyCheck(unselectedModule)
 455             if len(unsatisfied) > 0 or len(unsatisfied_params) > 0:
 456                 message = []
 457                 heading = self.tr("The module %1 is needed by").arg(unselectedModule)
 458                 message.append(heading)
 459                 module_list = ", ".join(unsatisfied)
 460                 param_list = ", ".join(["%s (%s)" %(param_name, module) for module, param_name in unsatisfied_params])
 461                 if module_list:
 462                     message.append(QString(module_list))
 463                 if module_list and param_list:
 464                     message.append(self.tr("and by"))
 465                 if param_list:
 466                     message.append(QString(param_list))
 467                 message_str = QStringList(message).join(" ")
 468                 message_str.append(self.tr("\n\nDo you want to automatically fix these conflicts?"))
 469                 qApp.restoreOverrideCursor()
 470                 choice = QMessageBox.warning(self, self.tr("Dependency error"), message_str, QMessageBox.Yes | QMessageBox.No, QMessageBox.Yes)
 471                 qApp.setOverrideCursor(Qt.WaitCursor)
 472                 if choice == QMessageBox.Yes:
 473                     for module in unsatisfied:
 474                         modules = self.projectInfo("MODULES")
 475                         modules[module]["enabled"] = False
 476                     for category in range(self.pageContent.moduleTree.topLevelItemCount()):
 477                         item = self.pageContent.moduleTree.topLevelItem(category)
 478                         self.setBold(item, False)
 479                         for child in range(item.childCount()):
 480                             if unicode(item.child(child).text(0)) in unsatisfied:
 481                                 self.setBold(item.child(child), False)
 482                                 item.child(child).setCheckState(0, Qt.Unchecked)
 483                             else:
 484                                 if self.isBold(item.child(child)):
 485                                     self.setBold(item, True)
 486                     for module, param in unsatisfied_params:
 487                         configuration_file = self.projectInfo("MODULES")[module]["configuration"]
 488                         configurations = self.projectInfo("CONFIGURATIONS")
 489                         configurations[configuration_file][param]["value"] = "0"
 490                         self.setProjectInfo("CONFIGURATIONS", configurations)
 491         finally:
 492             qApp.restoreOverrideCursor()
 493
 494     def selectDependencyCheck(self, module):
 495         """
 496         Returns the list of unsatisfied dependencies after a selection.
 497         """
 498         unsatisfied = set()
 499         modules = self.projectInfo("MODULES")
 500         files = self.projectInfo("FILES")
 501         configurations = self.projectInfo("CONFIGURATIONS").get(modules[module]["configuration"], {"paramlist": ()})
 502         conditional_deps = ()
 503         for i, param_name in configurations["paramlist"]:
 504             information = configurations[param_name]
 505             if information["informations"]["type"] == "boolean" and \
 506                 information["value"] != "0" and \
 507                 "conditional_deps" in information["informations"]:
 508
 509                 conditional_deps += information["informations"]["conditional_deps"]
 510
 511         for dependency in modules[module]["depends"] + conditional_deps:
 512             if dependency in modules and not modules[dependency]["enabled"]:
 513                 unsatisfied |= set([dependency])
 514                 if dependency not in unsatisfied:
 515                     unsatisfied |= self.selectDependencyCheck(dependency)
 516             if dependency not in modules:
 517                 if dependency in files:
 518                     files[dependency] += 1
 519                 else:
 520                     files[dependency] = 1
 521         self.setProjectInfo("FILES", files)
 522         return unsatisfied
 523
 524     def unselectDependencyCheck(self, dependency):
 525         """
 526         Returns the list of unsatisfied dependencies after an unselection.
 527         """
 528         unsatisfied = set()
 529         unsatisfied_params = set()
 530         modules = self.projectInfo("MODULES")
 531         for module, informations in modules.items():
 532             configurations = self.projectInfo("CONFIGURATIONS").get(informations["configuration"], {"paramlist": ()})
 533             conditional_deps = {}
 534             for i, param_name in configurations["paramlist"]:
 535                 information = configurations[param_name]
 536                 if information["informations"]["type"] == "boolean" and information["value"] != "0" and "conditional_deps" in information["informations"]:
 537                     for dep in information["informations"]["conditional_deps"]:
 538                         if not dep in conditional_deps:
 539                             conditional_deps[dep] = []
 540                         conditional_deps[dep].append((module, param_name))
 541             if dependency in informations["depends"] and informations["enabled"]:
 542                 unsatisfied |= set([module])
 543                 if dependency not in unsatisfied:
 544                     tmp = self.unselectDependencyCheck(module)
 545                     unsatisfied |= tmp[0]
 546                     unsatisfied_params |= tmp[1]
 547             if dependency in conditional_deps:
 548                 unsatisfied_params |= set(conditional_deps[dependency])
 549         return unsatisfied, unsatisfied_params
 550
 551     def removeFileDependencies(self, module):
 552         """
 553         Removes the files dependencies of the given module.
 554         """
 555         modules = self.projectInfo("MODULES")
 556         files = self.projectInfo("FILES")
 557         dependencies = modules[module]["depends"]
 558         for dependency in dependencies:
 559             if dependency in files:
 560                 files[dependency] -= 1
 561                 if files[dependency] == 0:
 562                     del files[dependency]
 563         self.setProjectInfo("FILES", files)
 564
 565 class QControlGroup(QObject):
 566     """
 567     Simple class that permit to connect different signals of different widgets
 568     with a slot that emit a signal. Permits to group widget and to understand which of
 569     them has sent the signal.
 570     """
 571
 572     def __init__(self):
 573         QObject.__init__(self)
 574         self._controls = {}
 575
 576     def addControl(self, id, control):
 577         """
 578         Add a control.
 579         """
 580         self._controls[id] = control
 581         if type(control) == QCheckBox:
 582             self.connect(control, SIGNAL("stateChanged(int)"), lambda: self.stateChanged(id))
 583         elif type(control) == QSpinBox:
 584             self.connect(control, SIGNAL("valueChanged(int)"), lambda: self.stateChanged(id))
 585         elif type(control) == QComboBox:
 586             self.connect(control, SIGNAL("currentIndexChanged(int)"), lambda: self.stateChanged(id))
 587         elif type(control) == QDoubleSpinBox:
 588             self.connect(control, SIGNAL("valueChanged(double)"), lambda: self.stateChanged(id))
 589
 590     def clear(self):
 591         """
 592         Remove all the controls.
 593         """
 594         self._controls = {}
 595
 596     def stateChanged(self, id):
 597         """
 598         Slot called when the value of one of the stored widget changes. It emits
 599         another signal.
 600         """
 601         self.emit(SIGNAL("stateChanged"), id)