1 files changed, 109 insertions, 0 deletions
diff --git a/share/extensions/inkex/deprecated/meta.py b/share/extensions/inkex/deprecated/meta.py
new file mode 100644
index 0000000..cebd93c
--- /dev/null
+++ b/share/extensions/inkex/deprecated/meta.py
@@ -0,0 +1,109 @@
+# coding=utf-8
+#
+# Copyright (C) 2018 - Martin Owens <doctormo@gmail.com>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+"""
+Deprecation functionality which does not require imports from Inkex.
+"""
+
+import os
+import traceback
+import warnings
+from typing import Optional
+
+try:
+    DEPRECATION_LEVEL = int(os.environ.get("INKEX_DEPRECATION_LEVEL", 1))
+except ValueError:
+    DEPRECATION_LEVEL = 1
+
+
+def _deprecated(msg, stack=2, level=DEPRECATION_LEVEL):
+    """Internal method for raising a deprecation warning"""
+    if level > 1:
+        msg += " ; ".join(traceback.format_stack())
+    if level:
+        warnings.warn(msg, category=DeprecationWarning, stacklevel=stack + 1)
+
+
+def deprecate(func, version: Optional[str] = None):
+    r"""Function decorator for deprecation functions which have a one-liner
+    equivalent in the new API. The one-liner has to passed as a string
+    to the decorator.
+
+    >>> @deprecate
+    >>> def someOldFunction(*args):
+    >>>     '''Example replacement code someNewFunction('foo', ...)'''
+    >>>     someNewFunction('foo', *args)
+
+    Or if the args API is the same:
+
+    >>> someOldFunction = deprecate(someNewFunction)
+
+    """
+
+    def _inner(*args, **kwargs):
+        _deprecated(f"{func.__module__}.{func.__name__} -> {func.__doc__}", stack=2)
+        return func(*args, **kwargs)
+
+    _inner.__name__ = func.__name__
+    if func.__doc__:
+        if version is None:
+            _inner.__doc__ = "Deprecated -> " + func.__doc__
+        else:
+            _inner.__doc__ = f"""{func.__doc__}\n\n.. deprecated:: {version}\n"""
+    return _inner
+
+
+class DeprecatedSvgMixin:
+    """Mixin which adds deprecated API elements to the SvgDocumentElement"""
+
+    @property
+    def selected(self):
+        """svg.selection"""
+        return self.selection
+
+    @deprecate
+    def set_selected(self, *ids):
+        r"""svg.selection.set(\*ids)"""
+        return self.selection.set(*ids)
+
+    @deprecate
+    def get_z_selected(self):
+        """svg.selection.rendering_order()"""
+        return self.selection.rendering_order()
+
+    @deprecate
+    def get_selected(self, *types):
+        r"""svg.selection.filter(\*types).values()"""
+        return self.selection.filter(*types).values()
+
+    @deprecate
+    def get_selected_or_all(self, *types):
+        """Set select_all = True in extension class"""
+        if not self.selection:
+            self.selection.set_all()
+        return self.selection.filter(*types)
+
+    @deprecate
+    def get_selected_bbox(self):
+        """selection.bounding_box()"""
+        return self.selection.bounding_box()
+
+    @deprecate
+    def get_first_selected(self, *types):
+        r"""selection.filter(\*types).first() or [0] if you'd like an error"""
+        return self.selection.filter(*types).first()