示例#1
0
class MVCConfigurationGUI(MVCConfigurationBase):
    """
    GUI implementation of MVCConfigurationBase
    """
    def __init__(self, configuration):
        super().__init__(configuration)
        assertMainThread()
        srv = Services.getService("MainWindow")
        srv.aboutToClose.connect(self._aboutToClose)
        confMenu = srv.menuBar().addMenu("&Configuration")
        toolBar = srv.getToolBar()

        configuration.configNameChanged.connect(self._configNameChanged)
        configuration.dirtyChanged.connect(self._dirtyChanged)

        style = QApplication.style()
        self.actLoad = QAction(
            QIcon.fromTheme("document-open",
                            style.standardIcon(QStyle.SP_DialogOpenButton)),
            "Open config", self)
        self.actLoad.triggered.connect(self._execLoad)
        self.actSave = QAction(
            QIcon.fromTheme("document-save",
                            style.standardIcon(QStyle.SP_DialogSaveButton)),
            "Save config", self)
        self.actSave.triggered.connect(self._execSaveConfig)
        self.actSaveWithGuiState = QAction(
            QIcon.fromTheme("document-save",
                            style.standardIcon(QStyle.SP_DialogSaveButton)),
            "Save config sync gui state", self)
        self.actSaveWithGuiState.triggered.connect(
            self._execSaveConfigWithGuiState)
        self.actNew = QAction(
            QIcon.fromTheme("document-new",
                            style.standardIcon(QStyle.SP_FileIcon)),
            "New config", self)
        self.actNew.triggered.connect(self._execNew)

        self.actActivate = QAction(
            QIcon.fromTheme("arrow-up", style.standardIcon(QStyle.SP_ArrowUp)),
            "Initialize", self)
        self.actActivate.triggered.connect(self.activate)
        self.actDeactivate = QAction(
            QIcon.fromTheme("arrow-down",
                            style.standardIcon(QStyle.SP_ArrowDown)),
            "Deinitialize", self)
        self.actDeactivate.triggered.connect(self.deactivate)

        confMenu.addAction(self.actLoad)
        confMenu.addAction(self.actSave)
        confMenu.addAction(self.actSaveWithGuiState)
        confMenu.addAction(self.actNew)
        confMenu.addAction(self.actActivate)
        confMenu.addAction(self.actDeactivate)
        toolBar.addAction(self.actLoad)
        toolBar.addAction(self.actSave)
        toolBar.addAction(self.actNew)
        toolBar.addAction(self.actActivate)
        toolBar.addAction(self.actDeactivate)

        self.recentConfigs = [QAction() for i in range(10)]
        self.recentConfigs[0].setShortcut(QKeySequence(Qt.CTRL + Qt.Key_R))
        confMenu.addSeparator()
        recentMenu = confMenu.addMenu("Recent")
        for a in self.recentConfigs:
            a.setVisible(False)
            a.triggered.connect(self._openRecent)
            recentMenu.addAction(a)

        self.mainWidget = srv.newDockWidget("Configuration", None,
                                            Qt.LeftDockWidgetArea)
        self.treeView = QTreeView(self.mainWidget)
        self.treeView.setHeaderHidden(False)
        self.treeView.setSelectionMode(QAbstractItemView.NoSelection)
        self.treeView.setEditTriggers(self.treeView.EditKeyPressed
                                      | self.treeView.AnyKeyPressed)
        self.treeView.setAllColumnsShowFocus(True)
        self.treeView.setExpandsOnDoubleClick(False)
        self.treeView.setDragEnabled(True)
        self.treeView.setDropIndicatorShown(True)
        self.treeView.setDragDropMode(QAbstractItemView.DragOnly)
        self.mainWidget.setWidget(self.treeView)
        self.treeView.setModel(self.model)
        self.treeView.header().setStretchLastSection(True)
        self.treeView.header().setSectionResizeMode(
            0, QHeaderView.ResizeToContents)
        self.treeView.doubleClicked.connect(self._onItemDoubleClicked)
        self.treeView.setContextMenuPolicy(Qt.CustomContextMenu)
        self.treeView.customContextMenuRequested.connect(
            self._execTreeViewContextMenu)
        # expand applications by default
        self.treeView.setExpanded(self.model.index(1, 0), True)
        self.delegate = PropertyDelegate(self.model, ITEM_ROLE,
                                         ConfigurationModel.PropertyContent,
                                         self)
        self.treeView.setItemDelegate(self.delegate)

        self.restoreState()
        srv.aboutToClose.connect(self.saveState)
        # a list of dock widgets displaying subgraphs
        self._graphViews = []
        # make sure that the graph views are closed when the config is closed
        self._configuration.subConfigRemoved.connect(self._subConfigRemoved)
        self._waitForActivated = None
        self._waitForOpenState = None

    def _execLoad(self):
        assertMainThread()
        if self._checkDirty():
            return
        fn, _ = QFileDialog.getOpenFileName(self.mainWidget,
                                            "Load configuration",
                                            self.cfgfile,
                                            filter="*.json")
        if fn is not None and fn != "":
            logger.debug("Loading config file %s", fn)
            try:
                self.loadConfig(fn)
            except Exception as e:  # pylint: disable=broad-except
                logger.exception("Error while loading configuration %s: %s",
                                 fn, str(e))
                QMessageBox.warning(self.mainWidget,
                                    "Error while loading configuration",
                                    str(e))

    def _openRecent(self):
        """
        Called when the user clicks on a recent config.

        :return:
        """
        if self._checkDirty():
            return
        action = self.sender()
        fn = action.data()
        try:
            self.loadConfig(fn)
        except Exception as e:  # pylint: disable=broad-except
            # catching general exception is wanted here.
            logger.exception("Error while loading configuration %s: %s", fn,
                             str(e))
            QMessageBox.warning(self.mainWidget,
                                "Error while loading configuration", str(e))

    def _checkDirty(self):
        if self._configuration.dirty():
            ans = QMessageBox.question(
                None,
                "Save changes?",
                "There are unsaved changes. Do you want to save them?",
                buttons=QMessageBox.Save | QMessageBox.Discard
                | QMessageBox.Cancel,
                defaultButton=QMessageBox.Save)
            if ans == QMessageBox.Save:
                self.saveConfig()
                return False
            if ans == QMessageBox.Cancel:
                return True
        return False

    def _aboutToClose(self, mainWindow):
        if self._checkDirty():
            mainWindow.ignoreCloseEvent()

    def _execNew(self):
        assertMainThread()
        if self._checkDirty():
            return
        fn, _ = QFileDialog.getSaveFileName(self.mainWidget,
                                            "New configuration",
                                            ".",
                                            filter="*.json")
        if fn is not None and fn != "":
            logger.debug("Creating config file %s", fn)
            self.newConfig(fn)

    def _execSaveConfig(self):
        if self.configuration().filename() is None:
            self._execSaveConfigAs()
        else:
            self.saveConfig()

    def _execSaveConfigWithGuiState(self):
        if self.configuration().filename() is None:
            self._execSaveConfigAs()
        else:
            self.saveConfigWithGuiState()

    def _execSaveConfigAs(self):
        """
        Opens a file dialog to get the save file name and calls saveConfig.

        :return:
        """
        assertMainThread()
        fn, _ = QFileDialog.getSaveFileName(self.mainWidget,
                                            "Save configuration as", ".",
                                            "*.json")
        if fn is not None and fn != "":
            self.saveConfigAs(fn)

    def _addGraphView(self, subConfig):
        g = subConfig.getGraph()
        # remove already deleted graph views from internal list
        valid_graphViews = []
        for gv in self._graphViews:
            if shiboken2.isValid(gv):  # pylint: disable=no-member
                valid_graphViews.append(gv)
        self._graphViews = valid_graphViews
        # check if graph view is already there
        for gv in self._graphViews:
            if gv.widget().scene().graph == g:
                logger.info("Graph view already exists.")
                return
        # create new graph view
        srv = Services.getService("MainWindow")
        graphDw = srv.newDockWidget("Graph (%s)" % (subConfig.getName()),
                                    parent=None,
                                    defaultArea=Qt.RightDockWidgetArea,
                                    allowedArea=Qt.RightDockWidgetArea
                                    | Qt.BottomDockWidgetArea)
        graphDw.setAttribute(Qt.WA_DeleteOnClose, True)
        assert isinstance(graphDw, QDockWidget)
        graphView = GraphEditorView(graphDw)
        graphView.setScene(GraphScene(subConfig.getGraph(), graphDw))
        graphDw.setWidget(graphView)
        self._graphViews.append(graphDw)
        graphDw.visibleChanged.connect(self._removeGraphViewFromList)

    def _subConfigRemoved(self, subConfigName, configType):
        g = self._configuration.subConfigByNameAndTye(subConfigName,
                                                      configType).getGraph()
        for gv in self._graphViews:
            if gv.widget().scene().graph == g:
                logger.debug("deleting graph view for subconfig %s",
                             subConfigName)
                gv.deleteLater()

    def _removeGraphViewFromList(self, visible):
        if visible:
            return
        gv = self.sender()
        try:
            self._graphViews.remove(gv)
            logger.debug("removed graphview from list")
        except ValueError:
            logger.debug("graphview not in list, ignored")

    def _execTreeViewContextMenu(self, point):
        index = self.treeView.indexAt(point)
        item = self.model.data(index, ITEM_ROLE)
        if isinstance(item, ConfigurationModel.SubConfigContent):
            m = QMenu()
            a1 = QAction("Edit graph")
            m.addAction(a1)
            a1.triggered.connect(lambda: self._addGraphView(item.subConfig))
            if self.model.isApplication(index):
                a2 = QAction("Select Application")
                a2.triggered.connect(lambda: self.changeActiveApp(
                    self.model.data(index, Qt.DisplayRole)))
                a3 = QAction("Init Application")
                a3.triggered.connect(lambda: self._changeActiveAppAndInit(
                    self.model.data(index, Qt.DisplayRole)))
                m.addActions([a2, a3])
                pbsrv = Services.getService("PlaybackControl")
                m2 = m.addMenu("Init and load sequence")
                m3 = m.addMenu("Init, load and play")
                s1 = []
                s2 = []
                for a in pbsrv.recentSeqs:
                    assert isinstance(a, QAction)
                    if a.isVisible():
                        # pylint: disable=cell-var-from-loop
                        # the below statements are tested and work
                        aseq = QAction(a.text())
                        aseq.triggered.connect(lambda arg1=a.data(
                        ), seq=a.data(): self._changeActiveAppInitAndLoad(
                            self.model.data(index, Qt.DisplayRole), seq, False)
                                               )
                        s1.append(aseq)
                        aseq = QAction(a.text())
                        aseq.triggered.connect(lambda arg1=a.data(
                        ), seq=a.data(): self._changeActiveAppInitAndLoad(
                            self.model.data(index, Qt.DisplayRole), seq, True))
                        # pylint: enable=cell-var-from-loop
                        s2.append(aseq)
                m2.addActions(s1)
                m3.addActions(s2)
            m.exec_(self.treeView.mapToGlobal(point))
            return
        if self.model.isSubConfigParent(
                index) == Configuration.CONFIG_TYPE_APPLICATION:
            m = QMenu()
            a = QAction("Add application")
            m.addAction(a)
            a = m.exec_(self.treeView.mapToGlobal(point))
            if a is not None:
                self._configuration.addNewApplication()
            return
        if self.model.isSubConfigParent(
                index) == Configuration.CONFIG_TYPE_COMPOSITE:
            m = QMenu()
            a = QAction("Add composite filter")
            m.addAction(a)
            a = m.exec_(self.treeView.mapToGlobal(point))
            if a is not None:
                self._configuration.addNewCompositeFilter()
            return

    def _configNameChanged(self, cfgfile):
        logger.debug("_configNameChanged: %s", cfgfile)
        assertMainThread()
        self.cfgfile = cfgfile
        self._dirtyChanged(self._configuration.dirty())
        foundIdx = None
        for i, a in enumerate(self.recentConfigs):
            if a.data() == cfgfile:
                foundIdx = i
        if foundIdx is None:
            foundIdx = len(self.recentConfigs) - 1
        for i in range(foundIdx, 0, -1):
            self.recentConfigs[i].setText(self.recentConfigs[i - 1].text())
            self.recentConfigs[i].setData(self.recentConfigs[i - 1].data())
            self.recentConfigs[i].setVisible(
                self.recentConfigs[i - 1].data() is not None)
        self.recentConfigs[0].setText(cfgfile)
        self.recentConfigs[0].setData(cfgfile)
        self.recentConfigs[0].setVisible(True)

    def _dirtyChanged(self, dirty):
        srv = Services.getService("MainWindow")
        if self.cfgfile is None:
            title = "nexxT: <unnamed>"
        else:
            title = "nexxT: " + self.cfgfile
        if dirty:
            title += " *"
        srv.setWindowTitle(title)

    def _onItemDoubleClicked(self, index):
        assertMainThread()
        if self.model.isApplication(index):
            app = self.model.data(index, Qt.DisplayRole)
            self.changeActiveApp(app)
        else:
            self.treeView.edit(index)

    def _changeActiveAppAndInit(self, app):
        """
        Call this slot to activate and init an application

        :param app: can be either an Application instance or the name of an application
        :return:
        """
        assertMainThread()
        if isinstance(app, str):
            app = self.configuration().applicationByName(app)
        currentApp = Application.activeApplication
        if currentApp is not None:
            currentApp = currentApp.getApplication()
        self._waitForActivated = app
        self.changeActiveApp(app.getName())

    def _changeActiveAppInitAndLoad(self, app, sequence, startPlay):
        self._waitForOpenState = (app, sequence, startPlay)
        self._changeActiveAppAndInit(app)

    def appActivated(self, name, app):  # pylint: disable=unused-argument
        """
        Called when the application is activated.

        :param name: the application name
        :param app: An ActiveApplication instance.
        :return:
        """
        assertMainThread()
        if app is not None:
            self.activeAppStateChange(app.getState())
            app.stateChanged.connect(self.activeAppStateChange)
            if self._waitForActivated == app.getApplication():
                MethodInvoker(self.activate, Qt.QueuedConnection)
        else:
            self.actActivate.setEnabled(False)
            self.actDeactivate.setEnabled(False)
        self._waitForActivated = None

    def _disconnectSingleShotPlay(self):
        assertMainThread()
        pbsrv = Services.getService("PlaybackControl")
        try:
            pbsrv.playbackPaused.disconnect(self._singleShotPlay)
        except RuntimeError:
            # we are already disconnected.
            pass

    def _singleShotPlay(self):
        assertMainThread()
        pbsrv = Services.getService("PlaybackControl")
        MethodInvoker(pbsrv.startPlayback, Qt.QueuedConnection)
        self._disconnectSingleShotPlay()

    def activeAppStateChange(self, newState):
        """
        Called when the active application changes its state.

        :param newState: the new application's state (see FilterState)
        :return:
        """
        assertMainThread()
        if newState == FilterState.CONSTRUCTED:
            self.actActivate.setEnabled(True)
        else:
            self.actActivate.setEnabled(False)
        if newState == FilterState.ACTIVE:
            if self._waitForOpenState is not None:
                app, pbfile, startPlay = self._waitForOpenState
                self._waitForOpenState = None
                if app == Application.activeApplication.getApplication(
                ).getName():
                    pbsrv = Services.getService("PlaybackControl")
                    if startPlay:
                        pbsrv.playbackPaused.connect(self._singleShotPlay)
                        QTimer.singleShot(2000, self._disconnectSingleShotPlay)
                    MethodInvoker(pbsrv.browser.setActive, Qt.QueuedConnection,
                                  pbfile)
            self.actDeactivate.setEnabled(True)
            self.actSaveWithGuiState.setEnabled(False)
        else:
            self.actDeactivate.setEnabled(False)
            self.actSaveWithGuiState.setEnabled(True)

    def restoreState(self):
        """
        Restore the state of the configuration gui service (namely the recently
        open config files). This is saved in QSettings because it is used
        across config files.

        :return:
        """
        logger.debug("restoring config state ...")
        settings = QSettings()
        v = settings.value("ConfigurationRecentFiles")
        if v is not None and isinstance(v, QByteArray):
            ds = QDataStream(v)
            recentFiles = ds.readQStringList()
            idx = 0
            for f in recentFiles:
                if f != "" and f is not None:
                    self.recentConfigs[idx].setData(f)
                    self.recentConfigs[idx].setText(f)
                    self.recentConfigs[idx].setVisible(True)
                    idx += 1
                    if idx >= len(self.recentConfigs):
                        break
        logger.debug("restoring config state done")

    def saveState(self):
        """
        Save the state of the configuration gui service (namely the recently
        open config files). This is saved in QSettings because it is used
        across config files.

        :return:
        """
        logger.debug("saving config state ...")
        settings = QSettings()
        b = QByteArray()
        ds = QDataStream(b, QIODevice.WriteOnly)
        l = [
            rc.data() for rc in self.recentConfigs
            if rc.isVisible() and rc.data() is not None and rc.data() != ""
        ]
        ds.writeQStringList(l)
        settings.setValue("ConfigurationRecentFiles", b)
        logger.debug("saving config state done (%s)", l)
示例#2
0
class TriageFilePicker(QWidget):
	def __init__(self, context):
		super(TriageFilePicker, self).__init__()
		self.context = context
		self.actionHandler = UIActionHandler()
		self.actionHandler.setupActionHandler(self)
		self.contextMenu = Menu()
		self.contextMenuManager = ContextMenuManager(self)

		layout = QVBoxLayout()
		layout.setContentsMargins(0, 0, 0, 0)

		self.model = QFileSystemModel()
		self.model.setRootPath("")
		self.model.setFilter(QDir.AllEntries | QDir.Hidden | QDir.System)
		self.tree = QTreeView(self)
		self.tree.setModel(self.model)
		self.tree.setSelectionMode(QAbstractItemView.ExtendedSelection)
		self.tree.setColumnWidth(0, 500)
		layout.addWidget(self.tree, 1)

		self.setLayout(layout)

		self.tree.doubleClicked.connect(self.onDoubleClick)

		recentFile = QSettings().value("triage/recentFile", os.path.expanduser("~"))
		while len(recentFile) > 0:
			f = self.model.index(recentFile)
			if f.isValid():
				self.tree.scrollTo(f)
				self.tree.setExpanded(f, True)
				break
			parentDir = os.path.dirname(recentFile)
			if parentDir == recentFile:
				break
			recentFile = parentDir

		self.actionHandler.bindAction("Open Selected Files", UIAction(
			lambda context: self.openSelectedFiles(),
			lambda context: self.areFilesSelected()))
		self.contextMenu.addAction("Open Selected Files", "Open")

	def contextMenuEvent(self, event):
		self.contextMenuManager.show(self.contextMenu, self.actionHandler)

	def onDoubleClick(self, index):
		self.openSelectedFiles()

	def openSelectedFiles(self):
		failedToOpen = []
		files = set()

		for index in self.tree.selectionModel().selectedIndexes():
			if self.model.fileInfo(index).isFile():
				files.add(self.model.fileInfo(index).absoluteFilePath())

		for filename in files:
				QSettings().setValue("triage/recentFile", filename)

				f = FileContext.openFilename(filename)
				if not f:
					failedToOpen.append(filename)
					continue

				f.createBinaryViews()
				for data in f.getAllDataViews():
					Settings().set_string("analysis.mode", Settings().get_string("triage.analysisMode"), data)
					Settings().set_bool("triage.preferSummaryView", True, data)
					if data.view_type != "Raw":
						linearSweepMode = Settings().get_string("triage.linearSweep")
						if linearSweepMode == "none":
							Settings().set_bool("analysis.linearSweep.autorun", False, data)
						elif linearSweepMode == "partial":
							Settings().set_bool("analysis.linearSweep.autorun", True, data)
							Settings().set_bool("analysis.linearSweep.controlFlowGraph", False, data)
						elif linearSweepMode == "full":
							Settings().set_bool("analysis.linearSweep.autorun", True, data)
							Settings().set_bool("analysis.linearSweep.controlFlowGraph", True, data)

				self.context.openFileContext(f)

		if len(failedToOpen) > 0:
			QMessageBox.critical(self, "Error", "Unable to open:\n" + "\n".join(failedToOpen))

	def areFilesSelected(self):
		return self.tree.selectionModel().hasSelection()
示例#3
0
class FileSystemWidget(QWidget):
    def __init__(self, parent, *args, **kwargs):
        super().__init__(*args, **kwargs)

        self.currentRootPath = '/'
        self.currentPath = QDir.currentPath()

        self.mainWindow = parent

        self.chooseDirAction = QAction(IconFactory.getIcon('folder'),
                                       'Root directory',
                                       self,
                                       statusTip="Change root directory",
                                       triggered=self.chooseRootDir)
        self.showOFAction = QAction(IconFactory.getIcon('filter_alt'),
                                    'Show only FITS files',
                                    self,
                                    statusTip="Show only FITS/all files",
                                    triggered=self.showOFFiles)
        self.showOFAction.setCheckable(True)
        self.showOFAction.toggled.connect(self.showOFFiles)

        self.chooseDirBtn = QToolButton()
        self.chooseDirBtn.setDefaultAction(self.chooseDirAction)

        self.showOFBtn = QToolButton()
        self.showOFBtn.setDefaultAction(self.showOFAction)

        iconlayout = QHBoxLayout()
        iconlayout.setAlignment(Qt.AlignLeft)
        iconlayout.addWidget(self.chooseDirBtn)
        iconlayout.addWidget(self.showOFBtn)

        self.viewsSplitter = QSplitter(Qt.Horizontal)
        self.viewsSplitter.splitterMoved.connect(self.splitterMoved)

        self.dirsModel = QFileSystemModel(self)
        self.dirsModel.setOption(QFileSystemModel.DontWatchForChanges, True)
        self.dirsModel.setFilter(QDir.NoDotAndDotDot | QDir.AllDirs)
        self.dirsModel.setNameFilterDisables(False)

        self.dirs = QTreeView()
        self.dirs.setModel(self.dirsModel)
        self.dirs.hideColumn(1)
        self.dirs.hideColumn(2)
        self.dirs.hideColumn(3)

        self.dirs.clicked.connect(self.onDirsClick)
        self.dirs.doubleClicked.connect(self.onDirsDoubleClick)

        self.filesModel = QFileSystemModel(self)
        self.filesModel.setOption(QFileSystemModel.DontWatchForChanges, True)
        self.filesModel.setFilter(QDir.NoDotAndDotDot | QDir.Files)
        self.filesModel.setNameFilterDisables(False)

        self.files = QListView()
        self.files.setModel(self.filesModel)
        self.files.doubleClicked.connect(self.onFilesDoubleClick)

        self.viewsSplitter.addWidget(self.dirs)
        self.viewsSplitter.addWidget(self.files)
        viewslayout = QHBoxLayout()
        viewslayout.addWidget(self.viewsSplitter)

        layout = QVBoxLayout()
        layout.addLayout(iconlayout)
        layout.addLayout(viewslayout)

        self.setLayout(layout)

        self.dirsModel.setRootPath(self.currentRootPath)
        self.dirs.setRootIndex(self.dirsModel.index(self.currentRootPath))

        index = self.dirsModel.index(self.currentPath)
        self.dirs.setCurrentIndex(index)
        self.dirs.setExpanded(index, True)

        self.filesModel.setRootPath(self.currentPath)
        self.files.setRootIndex(self.filesModel.index(self.currentPath))

    def splitterMoved(self, pos, index):
        if pos == 0:
            self.filesModel.setFilter(QDir.NoDot | QDir.AllEntries
                                      | QDir.DirsFirst | QDir.Type)
        elif pos == self.viewsSplitter.width(
        ) - self.viewsSplitter.handleWidth():
            self.dirsModel.setFilter(QDir.NoDotAndDotDot | QDir.AllEntries)
        else:
            self.dirsModel.setFilter(QDir.NoDotAndDotDot | QDir.AllDirs)
            self.filesModel.setFilter(QDir.NoDotAndDotDot | QDir.Files)

    def onDirsClick(self, item):
        index = self.dirs.selectedIndexes()[0]
        info = self.dirsModel.fileInfo(index)
        if info.isDir():
            self.currentPath = info.filePath()
            self.files.setRootIndex(
                self.filesModel.setRootPath(info.filePath()))

    def onDirsDoubleClick(self, item):
        index = self.dirs.selectedIndexes()[0]
        info = self.dirsModel.fileInfo(index)
        if info.isDir():
            self.currentPath = info.filePath()
            self.files.setRootIndex(
                self.filesModel.setRootPath(info.filePath()))
        else:
            self.mainWindow.open_fits(info.filePath())

    def onFilesDoubleClick(self, item):
        index = self.files.selectedIndexes()[0]
        info = self.filesModel.fileInfo(index)
        if info.isDir():
            self.setPath(info.filePath())
        else:
            try:
                self.mainWindow.open_fits(info.filePath())
            except FileNotFoundError:
                self.setPath(self.currentPath)  # refesh maybe?

    def setPath(self, path):
        self.currentPath = path

        index = self.dirsModel.index(self.currentPath)
        self.dirs.setCurrentIndex(index)
        self.dirs.setExpanded(index, True)

        self.files.setRootIndex(self.filesModel.setRootPath(self.currentPath))

    def chooseRootDir(self):
        dir = QFileDialog.getExistingDirectory(self, 'Select directory')
        if dir:
            self.setRootPath(dir)

    def setRootPath(self, dir):
        self.currentRootPath = dir

        self.dirsModel.setRootPath(self.currentRootPath)
        self.dirs.setRootIndex(self.dirsModel.index(self.currentRootPath))

        self.setPath(self.currentRootPath)

    def showOFFiles(self):
        if self.showOFAction.isChecked():
            self.dirsModel.setNameFilters(["*.FITS", "*.fits"])
            self.filesModel.setNameFilters(["*.FITS", "*.fits"])
        else:
            self.dirsModel.setNameFilters(["*"])
            self.filesModel.setNameFilters(["*"])

    def writeSettings(self, settings):
        settings.beginGroup("fileWidget")
        settings.setValue('splitterGeometry',
                          self.viewsSplitter.saveGeometry())
        settings.setValue('splitterState', self.viewsSplitter.saveState())
        settings.setValue('rootPath', self.currentRootPath)
        settings.setValue('path', self.currentPath)
        settings.endGroup()

    def readSettings(self, settings):
        settings.beginGroup("fileWidget")
        self.viewsSplitter.restoreGeometry(settings.value("splitterGeometry"))
        self.viewsSplitter.restoreState(settings.value("splitterState"))
        rootPath = settings.value("rootPath")
        path = settings.value("path")
        settings.endGroup()

        if rootPath is None:
            rootPath = '/'
        self.setRootPath(rootPath)

        if path is None:
            path = QDir.currentPath()
        self.setPath(path)

        self.splitterMoved(self.viewsSplitter.handle(1).pos().x(), 0)