VIEW3D_MT_pose_showhide.py

# 「3Dビュー」エリア > 「ポーズ」モード > 「ポーズ」メニュー > 「表示/隠す」メニュー
# "3D View" Area > "Pose" Mode > "Pose" Menu > "Show/Hide" Menu

import bpy
from bpy.props import *

################
# オペレーター #
################

class HideSelectBones(bpy.types.Operator):
	bl_idname = "armature.hide_select_bones"
	bl_label = "Restrict Selecting (Selected)"
	bl_description = "Make selected bones unselectable"
	bl_options = {'REGISTER', 'UNDO'}

	def execute(self, context):
		for bone in context.selected_pose_bones:
			context.active_object.data.bones[bone.name].hide_select = True
		return {'FINISHED'}

class HideNonSelectBones(bpy.types.Operator):
	bl_idname = "armature.hide_non_select_bones"
	bl_label = "Restrict Selecting (Non-Selected)"
	bl_description = "Make unselected bones unselectable"
	bl_options = {'REGISTER', 'UNDO'}

	limit_to_view : BoolProperty(name="Not apply to undisplayed bones", default=True)

	def draw(self, layout):
		self.layout.prop(self, 'limit_to_view')

	def execute(self, context):
		arma = context.active_object.data
		bones = arma.bones
		selected = [bones[b.name] for b in context.selected_pose_bones]
		if self.limit_to_view:
			targets = []
			import pprint
			for bone in list(set(bones) - set(selected)):
				if bone.hide:
					continue
				for ly_b, ly_a in zip(bone.layers[:], arma.layers[:]):
					if ly_b and ly_a and ly_b == ly_a:
						targets.append(bone)
						break
		else:
			targets = list(set(bones) - set(selected))
		for bone in targets:
			bone.hide_select = True
		return {'FINISHED'}

class HideSelectAllReset(bpy.types.Operator):
	bl_idname = "armature.hide_select_all_reset"
	bl_label = "Allow Selecting (All)"
	bl_description = "Make all bones selectable"
	bl_options = {'REGISTER', 'UNDO'}

	def execute(self, context):
		for bone in context.active_object.data.bones:
			bone.hide_select = False
		return {'FINISHED'}

################
# クラスの登録 #
################

classes = [
	HideSelectBones,
	HideNonSelectBones,
	HideSelectAllReset
]

def register():
	for cls in classes:
		bpy.utils.register_class(cls)

def unregister():
	for cls in classes:
		bpy.utils.unregister_class(cls)


################
# メニュー追加 #
################

# メニューのオン/オフの判定
def IsMenuEnable(self_id):
	for id in bpy.context.preferences.addons[__name__.partition('.')[0]].preferences.disabled_menu.split(','):
		if (id == self_id):
			return False
	else:
		return True

# メニューを登録する関数
def menu(self, context):
	if (IsMenuEnable(__name__.split('.')[-1])):
		self.layout.separator()
		self.layout.operator(HideSelectBones.bl_idname, icon="PLUGIN")
		self.layout.operator(HideNonSelectBones.bl_idname, icon="PLUGIN")
		self.layout.operator(HideSelectAllReset.bl_idname, icon="PLUGIN")
	if (context.preferences.addons[__name__.partition('.')[0]].preferences.use_disabled_menu):
		self.layout.separator()
		self.layout.operator('wm.toggle_menu_enable', icon='CANCEL').id = __name__.split('.')[-1]