perf scripts python: exported-sql-viewer.py: Add ability for Call tree to open...

class CallTreeWindow(TreeWindowBase):

	def __init__(self, glb, parent=None):

	def __init__(self, glb, parent=None, thread_at_time=None):

		super(CallTreeWindow, self).__init__(parent)

		self.model = LookupCreateModel("Call Tree", lambda x=glb: CallTreeModel(x))

		AddSubWindow(glb.mainwindow.mdi_area, self, "Call Tree")

		if thread_at_time:

			self.DisplayThreadAtTime(*thread_at_time)

	def DisplayThreadAtTime(self, comm_id, thread_id, time):

		parent = QModelIndex()

		for dbid in (comm_id, thread_id):

			found = False

			n = self.model.rowCount(parent)

			for row in xrange(n):

				child = self.model.index(row, 0, parent)

				if child.internalPointer().dbid == dbid:

					found = True

					self.view.setCurrentIndex(child)

					parent = child

					break

			if not found:

				return

		found = False

		while True:

			n = self.model.rowCount(parent)

			if not n:

				return

			last_child = None

			for row in xrange(n):

				child = self.model.index(row, 0, parent)

				child_call_time = child.internalPointer().call_time

				if child_call_time < time:

					last_child = child

				elif child_call_time == time:

					self.view.setCurrentIndex(child)

					return

				elif child_call_time > time:

					break

			if not last_child:

				if not found:

					child = self.model.index(0, 0, parent)

					self.view.setCurrentIndex(child)

				return

			found = True

			self.view.setCurrentIndex(last_child)

			parent = last_child

# Child data item  finder

class ChildDataItemFinder():