def __init__(self, instructionsURI=''):
        self.instructionsURI = instructionsURI

        self.logger = logging.getLogger('sasi_runner_gui')
        self.logger.addHandler(logging.StreamHandler())
        def log_fn(msg):
            self.log_msg(msg)
        self.logger.addHandler(FnLogHandler(log_fn))
        self.logger.setLevel(logging.DEBUG)

        self.selected_input_file = None
        self.selected_output_file = None

        self.frame = JFrame(
            "SASI Runner",
            defaultCloseOperation = WindowConstants.EXIT_ON_CLOSE,
        )
        self.frame.size = (650, 600,)

        self.main_panel = JPanel()
        self.main_panel.layout = BoxLayout(self.main_panel, BoxLayout.Y_AXIS)
        self.frame.add(self.main_panel)

        self.top_panel = JPanel(SpringLayout())
        self.top_panel.alignmentX = Component.CENTER_ALIGNMENT
        self.main_panel.add(self.top_panel)

        self.stageCounter = 1
        def getStageLabel(txt):
            label = JLabel("%s. %s" % (self.stageCounter, txt))
            self.stageCounter += 1
            return label

        # Instructions link.
        self.top_panel.add(getStageLabel("Read the instructions:"))
        instructionsButton = JButton(
            ('<HTML><FONT color="#000099">'
             '<U>open instructions</U></FONT><HTML>'),
            actionPerformed=self.browseInstructions)
        instructionsButton.setHorizontalAlignment(SwingConstants.LEFT);
        instructionsButton.setBorderPainted(False);
        instructionsButton.setOpaque(False);
        instructionsButton.setBackground(Color.WHITE);
        instructionsButton.setToolTipText(self.instructionsURI);
        self.top_panel.add(instructionsButton)

        # 'Select input' elements.
        self.top_panel.add(getStageLabel(
            "Select a SASI .zip file or data folder:"))
        self.top_panel.add(
            JButton("Select input...", actionPerformed=self.openInputChooser))

        # 'Select output' elements.
        self.top_panel.add(getStageLabel("Specify an output file:"))
        self.top_panel.add(
            JButton("Specify output...", actionPerformed=self.openOutputChooser))

        # 'Set result fields' elements.
        result_fields = [
            {'id': 'gear_id', 'label': 'Gear', 'selected': True, 
             'enabled': False}, 
            {'id': 'substrate_id', 'label': 'Substrate', 'selected': True}, 
            {'id': 'energy_id', 'label': 'Energy', 'selected': False},
            {'id': 'feature_id', 'label': 'Feature', 'selected': False}, 
            {'id': 'feature_category_id', 'label': 'Feature Category', 
             'selected': False}
        ]
        self.selected_result_fields = {}
        resolutionLabelPanel = JPanel(GridLayout(0,1))
        resolutionLabelPanel.add(getStageLabel("Set result resolution:"))
        resolutionLabelPanel.add(
            JLabel(("<html><i>This sets the specificity with which<br>"
                    "results will be grouped. Note that enabling<br>"
                    "more fields can *greatly* increase resulting<br>"
                    "output sizes and run times.</i>")))
        #self.top_panel.add(getStageLabel("Set result resolution:"))
        self.top_panel.add(resolutionLabelPanel)
        checkPanel = JPanel(GridLayout(0, 1))
        self.top_panel.add(checkPanel) 
        self.resultFieldCheckBoxes = {}
        for result_field in result_fields:
            self.selected_result_fields.setdefault(
                result_field['id'], result_field['selected'])
            checkBox = JCheckBox(
                result_field['label'], result_field['selected'])
            checkBox.setEnabled(result_field.get('enabled', True))
            checkBox.addItemListener(self)
            checkPanel.add(checkBox)
            self.resultFieldCheckBoxes[checkBox] = result_field

        # 'Run' elements.
        self.top_panel.add(getStageLabel("Run SASI: (this might take a while)"))
        self.run_button = JButton("Run...", actionPerformed=self.runSASI)
        self.top_panel.add(self.run_button)

        SpringUtilities.makeCompactGrid(
            self.top_panel, self.stageCounter - 1, 2, 6, 6, 6, 6)

        # Progress bar.
        self.progressBar = JProgressBar(0, 100)
        self.main_panel.add(self.progressBar)

        # Log panel.
        self.log_panel = JPanel()
        self.log_panel.alignmentX = Component.CENTER_ALIGNMENT
        self.log_panel.setBorder(EmptyBorder(10,10,10,10))
        self.main_panel.add(self.log_panel)
        self.log_panel.setLayout(BorderLayout())
        self.log = JTextArea()
        self.log.editable = False
        self.logScrollPane = JScrollPane(self.log)
        self.logScrollPane.setVerticalScrollBarPolicy(
            JScrollPane.VERTICAL_SCROLLBAR_ALWAYS)
        self.logScrollBar = self.logScrollPane.getVerticalScrollBar()
        self.log_panel.add(self.logScrollPane, BorderLayout.CENTER)

        # File selectors
        self.inputChooser = JFileChooser()
        self.inputChooser.fileSelectionMode = JFileChooser.FILES_AND_DIRECTORIES

        self.outputChooser = JFileChooser()
        defaultOutputFile = os.path.join(System.getProperty("user.home"),
                                         "sasi_project.zip")

        self.outputChooser.setSelectedFile(File(defaultOutputFile));
        self.outputChooser.fileSelectionMode = JFileChooser.FILES_ONLY

        self.frame.setLocationRelativeTo(None)
        self.frame.visible = True
    def __init__(self, instructionsURI=""):
        self.instructionsURI = instructionsURI

        self.logger = logging.getLogger("sasi_gridder_gui")
        self.logger.addHandler(logging.StreamHandler())

        def log_fn(msg):
            self.log_msg(msg)

        self.logger.addHandler(FnLogHandler(log_fn))
        self.logger.setLevel(logging.DEBUG)

        self.selected_input_file = None
        self.selected_output_file = None

        self.frame = JFrame("SASI Gridder", defaultCloseOperation=WindowConstants.EXIT_ON_CLOSE)
        self.frame.size = (650, 600)

        self.main_panel = JPanel()
        self.main_panel.layout = BoxLayout(self.main_panel, BoxLayout.Y_AXIS)
        self.frame.add(self.main_panel)

        self.top_panel = JPanel(SpringLayout())
        self.top_panel.alignmentX = Component.CENTER_ALIGNMENT
        self.main_panel.add(self.top_panel)

        self.stageCounter = 1

        def getStageLabel(txt):
            label = JLabel("%s. %s" % (self.stageCounter, txt))
            self.stageCounter += 1
            return label

        # Instructions link.
        self.top_panel.add(getStageLabel("Read the instructions:"))
        instructionsButton = JButton(
            ('<HTML><FONT color="#000099">' "<U>open instructions</U></FONT><HTML>"),
            actionPerformed=self.browseInstructions,
        )
        instructionsButton.setHorizontalAlignment(SwingConstants.LEFT)
        instructionsButton.setBorderPainted(False)
        instructionsButton.setOpaque(False)
        instructionsButton.setBackground(Color.WHITE)
        instructionsButton.setToolTipText(self.instructionsURI)
        self.top_panel.add(instructionsButton)

        # Select input elements.
        self.top_panel.add(getStageLabel("Select an input data folder:"))
        self.top_panel.add(JButton("Select input...", actionPerformed=self.openInputChooser))

        # Select output elements.
        self.top_panel.add(getStageLabel("Specify an output file:"))
        self.top_panel.add(JButton("Specify output...", actionPerformed=self.openOutputChooser))

        # Run elements.
        self.top_panel.add(getStageLabel("Run SASI Gridder: (this might take a hwile"))
        self.run_button = JButton("Run...", actionPerformed=self.runSASIGridder)
        self.top_panel.add(self.run_button)

        SpringUtilities.makeCompactGrid(self.top_panel, self.stageCounter - 1, 2, 6, 6, 6, 6)

        # Progress bar.
        self.progressBar = JProgressBar(0, 100)
        self.main_panel.add(self.progressBar)

        # Log panel.
        self.log_panel = JPanel()
        self.log_panel.alignmentX = Component.CENTER_ALIGNMENT
        self.log_panel.setBorder(EmptyBorder(10, 10, 10, 10))
        self.main_panel.add(self.log_panel)
        self.log_panel.setLayout(BorderLayout())
        self.log = JTextArea()
        self.log.editable = False
        self.logScrollPane = JScrollPane(self.log)
        self.logScrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS)
        self.log_panel.add(self.logScrollPane, BorderLayout.CENTER)

        # File selectors
        self.inputChooser = JFileChooser()
        self.inputChooser.fileSelectionMode = JFileChooser.FILES_AND_DIRECTORIES
        self.outputChooser = JFileChooser()
        self.outputChooser.fileSelectionMode = JFileChooser.FILES_ONLY
        defaultOutputFile = os.path.join(System.getProperty("user.home"), "gridded_efforts.csv")
        self.outputChooser.setSelectedFile(File(defaultOutputFile))

        self.frame.setLocationRelativeTo(None)
        self.frame.visible = True