# ----------------------------------------------------------------------------
# pyglet
# Copyright (c) 2006-2008 Alex Holkner
# Copyright (c) 2008-2020 pyglet contributors
# All rights reserved.
#
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# modification, are permitted provided that the following conditions
# are met:
#
#  * Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#  * Redistributions in binary form must reproduce the above copyright
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#    the documentation and/or other materials provided with the
#    distribution.
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#    derived from this software without specific prior written
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#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# ----------------------------------------------------------------------------
from builtins import object
from pyglet.libs.darwin import cocoapy

# This class is a wrapper around NSCursor which prevents us from
# sending too many hide or unhide messages in a row.  Apparently
# NSCursor treats them like retain/release messages, which can be
# problematic when we are e.g. switching between window & fullscreen.
class SystemCursor(object):
    cursor_is_hidden = False
    @classmethod
    def hide(cls):
        if not cls.cursor_is_hidden:
            cocoapy.send_message('NSCursor', 'hide')
            cls.cursor_is_hidden = True
    @classmethod
    def unhide(cls):
        if cls.cursor_is_hidden:
            cocoapy.send_message('NSCursor', 'unhide')
            cls.cursor_is_hidden = False
