Using custom QItemView item widgets with Qt 5

gistfile1.py

class SidebarItemsDelegate(QtWidgets.QStyledItemDelegate):
	def __init__(self, parent=None):
		super(SidebarItemsDelegate, self).__init__(parent)

		self.items = {}

	def itemForIndex(self, index):
		try:
			widget = self.items[index.row()]
		except KeyError:
		    # Use your custom View here!
			widget = SidebarItem()
			self.items[index.row()] = widget

	def paint(self, painter, option, index):
		model = index.model()
		widget = self.itemForIndex(index)

		# Set up the widget's data as needed
		# This should actually be in signals, but I'll get there eventually
		title = model.data(index, SidebarItemsModel.TitleRole)
		details = model.data(index, SidebarItemsModel.DetailRole)
		widget.setTitle(title)
		widget.setDetails(details)

		pixmap = widget.grab()
		painter.drawPixmap(option.rect.x(), option.rect.y(), pixmap)

	def sizeHint(self, option, index):
		widget = self.itemForIndex(index)

		return widget.sizeHint()