# coding: utf-8
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"""Base class for QAction attached to a Plot3DWidget."""

from __future__ import absolute_import, division

__authors__ = ["T. Vincent"]
__license__ = "MIT"
__date__ = "06/09/2017"


import logging
import weakref

from silx.gui import qt


_logger = logging.getLogger(__name__)


class Plot3DAction(qt.QAction):
    """QAction associated to a Plot3DWidget

    :param parent: See :class:`QAction`
    :param ~silx.gui.plot3d.Plot3DWidget.Plot3DWidget plot3d:
        Plot3DWidget the action is associated with
    """

    def __init__(self, parent, plot3d=None):
        super(Plot3DAction, self).__init__(parent)
        self._plot3d = None
        self.setPlot3DWidget(plot3d)

    def setPlot3DWidget(self, widget):
        """Set the Plot3DWidget this action is associated with

        :param ~silx.gui.plot3d.Plot3DWidget.Plot3DWidget widget:
            The Plot3DWidget to use
        """
        self._plot3d = None if widget is None else weakref.ref(widget)

    def getPlot3DWidget(self):
        """Return the Plot3DWidget associated to this action.

        If no widget is associated, it returns None.

        :rtype: QWidget
        """
        return None if self._plot3d is None else self._plot3d()
