# -*- coding: utf-8 -*-
"""
:author:
    Jeremy Ernst
:description:
    This module contains a class that presents a widget for setting the parent joint of a component.
"""

import os
from artv2.third_party.Qt import QtWidgets, QtCore, QtGui
import artv2.utilities.interface_utilities as interface_utils
import artv2.utilities.component_utilities as component_utils
import artv2.tools.rigging.rig_builder.parent_list_widget as parent_list
import pymel.core as pm


class SetParentWidget(interface_utils.ARTv2Window):
    """
    This class presents a widget for setting the parent joint of a component. It is invoked from the
    ComponentContextMenu.

    :param metanode: string name of the component’s network node that the parent will be set on.
    :param parent: the instance of the RigBuilderUI which will be this widget’s parent.

    .. figure:: /images/set_parent_widget.png
        :width: 220px
        :align: center
        :height: 108px
        :figclass: align-center
    """

    SETTINGS_NAME = "SetComponentParentWIN"
    WINDOW_NAME = "artv2_set_component_parent_window"

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

        super(SetParentWidget, self).__init__(220, 50, "Set Parent", parent)

        self.metanode = pm.PyNode(metanode)
        self._build_interface()

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    def _build_interface(self):

        main_widget = QtWidgets.QWidget()
        self.setCentralWidget(main_widget)
        main_layout = QtWidgets.QVBoxLayout(main_widget)

        parent_layout = QtWidgets.QHBoxLayout()
        main_layout.addLayout(parent_layout)
        parent_label = QtWidgets.QLabel("Parent:")
        parent_label.setMinimumWidth(interface_utils.scale_by_dpi(40))
        parent_label.setMaximumWidth(interface_utils.scale_by_dpi(40))
        parent_layout.addWidget(parent_label)

        self.parent_field = QtWidgets.QLineEdit()
        parent_button = QtWidgets.QPushButton()
        parent_button.setMinimumWidth(interface_utils.scale_by_dpi(25))
        parent_button.setMaximumWidth(interface_utils.scale_by_dpi(25))
        parent_button.setMinimumHeight(interface_utils.scale_by_dpi(25))
        parent_button.setMaximumHeight(interface_utils.scale_by_dpi(25))
        icon = QtGui.QIcon(os.path.join(self.icon_path, "general/search.png"))
        parent_button.setIconSize(QtCore.QSize(21, 21))
        parent_button.setIcon(icon)
        parent_layout.addWidget(self.parent_field)
        parent_layout.addWidget(parent_button)
        self._populate_field()

        completer = QtWidgets.QCompleter(component_utils.get_all_created_joints())
        completer.setCaseSensitivity(QtCore.Qt.CaseInsensitive)
        self.parent_field.setCompleter(completer)

        parent_button.clicked.connect(self._launch_parent_list)

        button_layout = QtWidgets.QHBoxLayout()
        main_layout.addLayout(button_layout)
        cancel_button = QtWidgets.QPushButton("Cancel")
        cancel_button.clicked.connect(self.close)
        confirm_button = QtWidgets.QPushButton("Set Parent")
        confirm_button.clicked.connect(self._set_parent)
        button_layout.addWidget(cancel_button)
        button_layout.addWidget(confirm_button)

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    def _populate_field(self):

        inst = component_utils.get_component_instance(self.metanode)
        self.parent_field.setText(inst.parent)
        del inst

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    def _launch_parent_list(self):

        widget = parent_list.ChooseParentList(self)
        pos = QtGui.QCursor.pos()
        widget.move(pos.x() + 10, pos.y() + 10)
        widget.exec_()

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    def _set_parent(self):

        inst = component_utils.get_component_instance(self.metanode)
        inst.parent = self.parent_field.text()
        del inst
        self.close()