# SPDX-FileCopyrightText: 2009-2023 Blender Authors
#
# SPDX-License-Identifier: GPL-2.0-or-later

from bpy.types import Operator


class MeshSelectNext(Operator):
    """Select the next element (using selection order)"""
    bl_idname = "mesh.select_next_item"
    bl_label = "Select Next Element"
    bl_options = {'REGISTER', 'UNDO'}

    @classmethod
    def poll(cls, context):
        return (context.mode == 'EDIT_MESH')

    def execute(self, context):
        import bmesh
        from .bmesh import find_adjacent

        obj = context.active_object
        me = obj.data
        bm = bmesh.from_edit_mesh(me)

        if find_adjacent.select_next(bm, self.report):
            bm.select_flush_mode()
            bmesh.update_edit_mesh(me, loop_triangles=False)

        return {'FINISHED'}


class MeshSelectPrev(Operator):
    """Select the previous element (using selection order)"""
    bl_idname = "mesh.select_prev_item"
    bl_label = "Select Previous Element"
    bl_options = {'REGISTER', 'UNDO'}

    @classmethod
    def poll(cls, context):
        return (context.mode == 'EDIT_MESH')

    def execute(self, context):
        import bmesh
        from .bmesh import find_adjacent

        obj = context.active_object
        me = obj.data
        bm = bmesh.from_edit_mesh(me)

        if find_adjacent.select_prev(bm, self.report):
            bm.select_flush_mode()
            bmesh.update_edit_mesh(me, loop_triangles=False)

        return {'FINISHED'}


classes = (
    MeshSelectNext,
    MeshSelectPrev,
)