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152 lines
4.5 KiB
152 lines
4.5 KiB
# Copyright (c) 2010-2022 openpyxl
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from copy import copy
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from warnings import warn
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from .numbers import (
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BUILTIN_FORMATS,
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BUILTIN_FORMATS_MAX_SIZE,
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BUILTIN_FORMATS_REVERSE,
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)
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from .proxy import StyleProxy
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from .cell_style import StyleArray
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from .named_styles import NamedStyle
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from .builtins import styles
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class StyleDescriptor(object):
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def __init__(self, collection, key):
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self.collection = collection
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self.key = key
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def __set__(self, instance, value):
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coll = getattr(instance.parent.parent, self.collection)
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if not getattr(instance, "_style"):
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instance._style = StyleArray()
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setattr(instance._style, self.key, coll.add(value))
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def __get__(self, instance, cls):
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coll = getattr(instance.parent.parent, self.collection)
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if not getattr(instance, "_style"):
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instance._style = StyleArray()
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idx = getattr(instance._style, self.key)
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return StyleProxy(coll[idx])
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class NumberFormatDescriptor(object):
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key = "numFmtId"
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collection = '_number_formats'
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def __set__(self, instance, value):
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coll = getattr(instance.parent.parent, self.collection)
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if value in BUILTIN_FORMATS_REVERSE:
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idx = BUILTIN_FORMATS_REVERSE[value]
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else:
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idx = coll.add(value) + BUILTIN_FORMATS_MAX_SIZE
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if not getattr(instance, "_style"):
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instance._style = StyleArray()
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setattr(instance._style, self.key, idx)
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def __get__(self, instance, cls):
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if not getattr(instance, "_style"):
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instance._style = StyleArray()
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idx = getattr(instance._style, self.key)
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if idx < BUILTIN_FORMATS_MAX_SIZE:
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return BUILTIN_FORMATS.get(idx, "General")
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coll = getattr(instance.parent.parent, self.collection)
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return coll[idx - BUILTIN_FORMATS_MAX_SIZE]
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class NamedStyleDescriptor(object):
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key = "xfId"
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collection = "_named_styles"
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def __set__(self, instance, value):
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if not getattr(instance, "_style"):
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instance._style = StyleArray()
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coll = getattr(instance.parent.parent, self.collection)
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if isinstance(value, NamedStyle):
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style = value
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if style not in coll:
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instance.parent.parent.add_named_style(style)
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elif value not in coll.names:
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if value in styles: # is it builtin?
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style = styles[value]
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if style not in coll:
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instance.parent.parent.add_named_style(style)
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else:
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raise ValueError("{0} is not a known style".format(value))
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else:
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style = coll[value]
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instance._style = copy(style.as_tuple())
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def __get__(self, instance, cls):
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if not getattr(instance, "_style"):
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instance._style = StyleArray()
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idx = getattr(instance._style, self.key)
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coll = getattr(instance.parent.parent, self.collection)
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return coll.names[idx]
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class StyleArrayDescriptor(object):
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def __init__(self, key):
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self.key = key
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def __set__(self, instance, value):
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if instance._style is None:
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instance._style = StyleArray()
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setattr(instance._style, self.key, value)
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def __get__(self, instance, cls):
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if instance._style is None:
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return False
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return bool(getattr(instance._style, self.key))
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class StyleableObject(object):
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"""
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Base class for styleble objects implementing proxy and lookup functions
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"""
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font = StyleDescriptor('_fonts', "fontId")
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fill = StyleDescriptor('_fills', "fillId")
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border = StyleDescriptor('_borders', "borderId")
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number_format = NumberFormatDescriptor()
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protection = StyleDescriptor('_protections', "protectionId")
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alignment = StyleDescriptor('_alignments', "alignmentId")
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style = NamedStyleDescriptor()
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quotePrefix = StyleArrayDescriptor('quotePrefix')
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pivotButton = StyleArrayDescriptor('pivotButton')
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__slots__ = ('parent', '_style')
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def __init__(self, sheet, style_array=None):
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self.parent = sheet
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if style_array is not None:
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style_array = StyleArray(style_array)
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self._style = style_array
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@property
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def style_id(self):
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if self._style is None:
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self._style = StyleArray()
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return self.parent.parent._cell_styles.add(self._style)
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@property
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def has_style(self):
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if self._style is None:
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return False
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return any(self._style)
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