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# -*- coding: utf-8 -*- #
# Copyright 2018 Google LLC. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Semantic text objects that are used for styled outputting."""
from __future__ import absolute_import
from __future__ import division
from __future__ import unicode_literals
import enum
class TextAttributes(object):
"""Attributes to use to style text with."""
def __init__(self, format_str=None, color=None, attrs=None):
"""Defines a set of attributes for a piece of text.
Args:
format_str: (str), string that will be used to format the text
with. For example '[{}]', to enclose text in brackets.
color: (Colors), the color the text should be formatted with.
attrs: (Attrs), the attributes to apply to text.
"""
self._format_str = format_str
self._color = color
self._attrs = attrs or []
@property
def format_str(self):
return self._format_str
@property
def color(self):
return self._color
@property
def attrs(self):
return self._attrs
class TypedText(object):
"""Text with a semantic type that will be used for styling."""
def __init__(self, texts, text_type=None):
"""String of text and a corresponding type to use to style that text.
Args:
texts: (list[str]), list of strs or TypedText objects
that should be styled using text_type.
text_type: (TextTypes), the semantic type of the text that
will be used to style text.
"""
self.texts = texts
self.text_type = text_type
def __len__(self):
length = 0
for text in self.texts:
length += len(text)
return length
def __add__(self, other):
texts = [self, other]
return TypedText(texts)
def __radd__(self, other):
texts = [other, self]
return TypedText(texts)
class _TextTypes(enum.Enum):
"""Text types base class that defines base functionality."""
def __call__(self, *args):
"""Returns a TypedText object using this style."""
return TypedText(list(args), self)
# TODO: Add more types.
class TextTypes(_TextTypes):
"""Defines text types that can be used for styling text."""
RESOURCE_NAME = 1
URL = 2
USER_INPUT = 3
COMMAND = 4
INFO = 5
URI = 6
OUTPUT = 7
PT_SUCCESS = 8
PT_FAILURE = 9
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