Class UiCounter

deps/v8/tools/stats-viewer.py:271–300

A counter in the ui.

class UiCounter(object):
  """A counter in the ui."""

  def __init__(self, var, format):
    """Creates a new ui counter.

    Args:
      var: the Tkinter string variable for updating the ui
      format: the format string used to format this counter
    """
    self.var = var
    self.format = format
    self.last_value = None

  def Set(self, value):
    """Updates the ui for this counter.

    Args:
      value: The value to display

    Returns:
      True if the value had changed, otherwise False.  The first call
      always returns True.
    """
    if value == self.last_value:
      return False
    else:
      self.last_value = value
      self.var.set(self.format % value)
      return True


class SharedDataAccess(object):