Function initialize_and_report

lantz/ui/widgets.py:1194–1303

Initialize drivers while reporting the status in a QtWidget. :param widget: Qt Widget where the status information is going to be shown. :param drivers: iterable of drivers to initialize. :param register_finalizer: register driver.finalize method to be called at python exit. :param

(widget, drivers, register_finalizer=True,
                          initializing_msg='Initializing ...', initialized_msg='Initialized',
                          concurrent=True, dependencies=None)

def initialize_and_report(widget, drivers, register_finalizer=True,
                          initializing_msg='Initializing ...', initialized_msg='Initialized',
                          concurrent=True, dependencies=None):
    """Initialize drivers while reporting the status in a QtWidget.

    :param widget: Qt Widget where the status information is going to be shown.
    :param drivers: iterable of drivers to initialize.
    :param register_finalizer: register driver.finalize method to be called at python exit.
    :param initializing_msg: message to be displayed while initializing.
    :param initialized_msg: message to be displayed after successful initialization.
    :param concurrent: indicates that drivers with satisfied dependencies
                       should be initialized concurrently.
    :param dependencies: indicates which drivers depend on others to be initialized.
                         each key is a driver name, and the corresponding
                         value is an iterable with its dependencies.
    :return: the QThread doing the initialization.
    """
    timing = {}

    thread = QtCore.QThread()
    helper = InitializerHelper(drivers, register_finalizer, concurrent, dependencies)
    helper.moveToThread(thread)
    thread.helper = helper

    if isinstance(widget, QtGui.QTableWidget):
        def _initializing(driver):
            timing[driver] = time.time()
            row = drivers.index(driver)
            widget.setItem(row, 2, QtGui.QTableWidgetItem(initializing_msg))

        def _initialized(driver):
            delta = time.time() - timing[driver]
            row = drivers.index(driver)
            widget.setItem(row, 2, QtGui.QTableWidgetItem(initialized_msg + ' ({:.1f} sec)'.format(delta)))

        def _exception(driver, e):
            delta = time.time() - timing[driver]
            row = drivers.index(driver)
            widget.setItem(row, 2, QtGui.QTableWidgetItem('{} ({:.1f} sec)'.format(e, delta)))

        def _done(duration):
            widget.setItem(len(drivers), 2, QtGui.QTableWidgetItem('{:.1f} sec'.format(duration)))
            thread.quit()

        widget.clearContents()
        widget.setRowCount(len(drivers) + 1)
        for row, driver in enumerate(drivers):
            widget.setItem(row, 0, QtGui.QTableWidgetItem(driver.name))
            widget.setItem(row, 1, QtGui.QTableWidgetItem(driver.__class__.__name__))
            widget.setItem(row, 2, QtGui.QTableWidgetItem(''))

        widget.resizeColumnToContents(0)
        widget.horizontalHeader().setStretchLastSection(True)

    elif isinstance(widget, QtGui.QLineEdit):
        def _initializing(driver):
            timing[driver] = time.time()
            widget.setText('{} ({}) > {}'.format(driver.name, driver.__class__.__name__,