o /hi@sFdZddgZddlZddlmZddlmZGdddeejjZ dS) aFCSSStyleDeclaration implements DOM Level 2 CSS CSSStyleDeclaration and extends CSS2Properties see http://www.w3.org/TR/1998/REC-CSS2-19980512/syndata.html#parsing-errors Unknown properties ------------------ User agents must ignore a declaration with an unknown property. For example, if the style sheet is:: H1 { color: red; rotation: 70minutes } the user agent will treat this as if the style sheet had been:: H1 { color: red } Cssutils gives a message about any unknown properties but keeps any property (if syntactically correct). Illegal values -------------- User agents must ignore a declaration with an illegal value. For example:: IMG { float: left } /* correct CSS2 */ IMG { float: left here } /* "here" is not a value of 'float' */ IMG { background: "red" } /* keywords cannot be quoted in CSS2 */ IMG { border-width: 3 } /* a unit must be specified for length values */ A CSS2 parser would honor the first rule and ignore the rest, as if the style sheet had been:: IMG { float: left } IMG { } IMG { } IMG { } Cssutils again will issue a message (WARNING in this case) about invalid CSS2 property values. TODO: This interface is also used to provide a read-only access to the computed values of an element. See also the ViewCSS interface. - return computed values and not literal values - simplify unit pairs/triples/quadruples 2px 2px 2px 2px -> 2px for border/padding... - normalize compound properties like: background: no-repeat left url() #fff -> background: #fff url() no-repeat left CSSStyleDeclarationPropertyN)CSS2Properties)rcsheZdZdZdKfdd ZddZd d Zd d Zd dZddZ ddZ fddZ ddZ ddZ ddZddZddZdd Zd!d"Zd#d$Zd%d&Zeeed'd(ZdLd)d*Zd+d,Zed-d.ed/d(ZdMd0d1ZdNd3d4ZdNd5d6ZdOd7d8ZdNd9d:ZdNd;d<ZdPd=d>Z d?d@Z!edAd.dBd(Z"dCdDZ#dEdFZ$ee#e$dGd(Z%dHdIZ&ee&dJd(Z'Z(S)QraJThe CSSStyleDeclaration class represents a single CSS declaration block. This class may be used to determine the style properties currently set in a block or to set style properties explicitly within the block. While an implementation may not recognize all CSS properties within a CSS declaration block, it is expected to provide access to all specified properties in the style sheet through the CSSStyleDeclaration interface. Furthermore, implementations that support a specific level of CSS should correctly handle CSS shorthand properties for that level. For a further discussion of shorthand properties, see the CSS2Properties interface. Additionally the CSS2Properties interface is implemented. $css2propertyname All properties defined in the CSS2Properties class are available as direct properties of CSSStyleDeclaration with their respective DOM name, so e.g. ``fontStyle`` for property 'font-style'. These may be used as:: >>> style = CSSStyleDeclaration(cssText='color: red') >>> style.color = 'green' >>> print(style.color) green >>> del style.color >>> print(style.color) Format:: [Property: Value Priority?;]* [Property: Value Priority?]? NFcs&t||_||_||_||_dS)a :param cssText: Shortcut, sets CSSStyleDeclaration.cssText :param parentRule: The CSS rule that contains this declaration block or None if this CSSStyleDeclaration is not attached to a CSSRule. :param readonly: defaults to False :param validating: a flag defining if this sheet should be validated on change. Defaults to None, which means defer to the parent stylesheet. N)super__init__ _parentRule validatingcssText _readonly)selfr parentRulereadonlyr  __class__T/var/www/html/myenv/lib/python3.10/site-packages/cssutils/css/cssstyledeclaration.pyrbs  zCSSStyleDeclaration.__init__cCs(t|tr |j}n||}||vS)zCheck if a property (or a property with given name) is in style. :param name: a string or Property, uses normalized name and not literalname ) isinstancername _normalize_CSSStyleDeclaration__nnames)r nameOrPropertyrrrr __contains__us   z CSSStyleDeclaration.__contains__csfdd}|S)zAIterator of set Property objects with different normalized names.c3s D]}|VqdSN)r getProperty)rr rr propertiess z0CSSStyleDeclaration.__iter__..propertiesr)r rrrr__iter__s zCSSStyleDeclaration.__iter__cCs t|S)z]Analoguous to standard dict returns property names which are set in this declaration.)listrrrrrkeyss zCSSStyleDeclaration.keyscC ||S)zzRetrieve the value of property ``CSSName`` from this declaration. ``CSSName`` will be always normalized. getPropertyValuer CSSNamerrr __getitem__s zCSSStyleDeclaration.__getitem__cCs$d}t|tr |\}}||||S)zSet value of property ``CSSName``. ``value`` may also be a tuple of (value, priority), e.g. style['color'] = ('red', 'important') ``CSSName`` will be always normalized. N)rtuple setProperty)r r%valuepriorityrrr __setitem__s zCSSStyleDeclaration.__setitem__cCr!)zDelete property ``CSSName`` from this declaration. If property is not in this declaration return u'' just like removeProperty. ``CSSName`` will be always normalized. removePropertyr$rrr __delitem__s zCSSStyleDeclaration.__delitem__cs:gd}|tj||vrt||dStd|)aPrevent setting of unknown properties on CSSStyleDeclaration which would not work anyway. For these ``CSSStyleDeclaration.setProperty`` MUST be called explicitly! TODO: implementation of known is not really nice, any alternative? ) _tokenizer_log_ttypes_seqseqrr r valid wellformedr r _profiles _validatingzRUnknown CSS Property, ``CSSStyleDeclaration.setProperty("%s", ...)`` MUST be used.N)extendr _propertiesr __setattr__AttributeError)r nvknownrrrr:s zCSSStyleDeclaration.__setattr__cCsd|jj|jddS)Nzcssutils.css.{}(cssText={!r}) ) separator)formatr__name__ getCssTextrrrr__repr__s zCSSStyleDeclaration.__repr__c Cs6d|jjd|jdt|jdddt|dd S) Nz)rrBlengthlen getPropertiesidrrrr__str__s6zCSSStyleDeclaration.__str__cCsBg}t|jD]}|j}t|tr|j|vr||jqt|S)zReturn iterator for all different names in order as set if names are set twice the last one is used (double reverse!) )reversedr3r)rrrappend)r namesitemvalrrr__nnamess zCSSStyleDeclaration.__nnamescCr!)aZ(DOM CSS2Properties) Overwritten here and effectively the same as ``self.getPropertyValue(CSSname)``. Parameter is in CSSname format ('font-style'), see CSS2Properties. Example:: >>> style = CSSStyleDeclaration(cssText='font-style:italic;') >>> print(style.fontStyle) italic r"r$rrr_getPs zCSSStyleDeclaration._getPcCs|||dS)a(DOM CSS2Properties) Overwritten here and effectively the same as ``self.setProperty(CSSname, value)``. Only known CSS2Properties may be set this way, otherwise an AttributeError is raised. For these unknown properties ``setPropertyValue(CSSname, value)`` has to be called explicitly. Also setting the priority of properties needs to be done with a call like ``setPropertyValue(CSSname, value, priority)``. Example:: >>> style = CSSStyleDeclaration() >>> style.fontStyle = 'italic' >>> # or >>> style.setProperty('font-style', 'italic', '!important') N)r()r r%r)rrr_setPszCSSStyleDeclaration._setPcCs||dS)a1(cssutils only) Overwritten here and effectively the same as ``self.removeProperty(CSSname)``. Example:: >>> style = CSSStyleDeclaration(cssText='font-style:italic;') >>> del style.fontStyle >>> print(style.fontStyle) Nr,r$rrr_delPs zCSSStyleDeclaration._delPccs|jD]}|jVqdS)zGenerator yielding any known child in this declaration including *all* properties, comments or CSSUnknownrules. N)r2r))r rQrrrchildrens  zCSSStyleDeclaration.childrencCs tj|S)z#Return serialized property cssText.cssutilsserdo_css_CSSStyleDeclarationrrrr _getCssTexts zCSSStyleDeclaration._getCssTextc s|}d fdd }d fdd d fdd }}jd||||dd \}}|D]}|j_q4|dS) aSetting this attribute will result in the parsing of the new value and resetting of all the properties in the declaration block including the removal or addition of properties. :exceptions: - :exc:`~xml.dom.NoModificationAllowedErr`: Raised if this declaration is readonly or a property is readonly. - :exc:`~xml.dom.SyntaxErr`: Raised if the specified CSS string value has a syntax error and is unparsable. Ncsjj||dd}|ddkr|td}||_|jr(||d|Sjd ||S)NT) starttoken semicolon;parentrz1CSSStyleDeclaration: Syntax Error in Property: %s) _tokensupto2 _tokenvaluepoprr r5rOr0error _valuestr)expectedr3token tokenizertokenspropertyrrrident.s  z.CSSStyleDeclaration._setCssText..identcs4|j|dd}jd|||S)NT)propertyvalueendonlyz8CSSStyleDeclaration: Unexpected token, ignoring upto %r.)rdrgrcr0rf)rhr3rirjignoredrrr unexpected@s  z3CSSStyleDeclaration._setCssText..unexpectedcs<|dkrjjd|gdd|S||||S)Nr`z6CSSStyleDeclaration: Stripped standalone semicolon: %sT neverraise)rdr0inforg)rhr3rirjr rprrcharLs z-CSSStyleDeclaration._setCssText..char)IDENTCHAR)rhr3rj productionsdefaultr)_checkReadonly _tokenize2_tempSeq_parser)_parent_setSeq) r r rjrmrunewseqr5rhrQrrtr _setCssTexts      zCSSStyleDeclaration._setCssTextzh(DOM) A parsable textual representation of the declaration block excluding the surrounding curly braces.)doccCstj||S)aU :returns: serialized property cssText, each property separated by given `separator` which may e.g. be ``u''`` to be able to use cssText directly in an HTML style attribute. ``;`` is part of each property (except the last one) and **cannot** be set with separator! rX)r r@rrrrCqs zCSSStyleDeclaration.getCssTextcC ||_dSrr )r rrrr_setParentRule| z"CSSStyleDeclaration._setParentRulecCs|jSrrrrrrszCSSStyleDeclaration.zy(DOM) The CSS rule that contains this declaration block or None if this CSSStyleDeclaration is not attached to a CSSRule.cs|r|s|}|r|gSgS|sfddDS|}g}jD]}|j}t|tr=|r8|j|kr=||q'|S)aX :param name: optional `name` of properties which are requested. Only properties with this **always normalized** `name` are returned. If `name` is ``None`` all properties are returned (at least one for each set name depending on parameter `all`). :param all: if ``False`` (DEFAULT) only the effective properties are returned. If name is given a list with only one property is returned. if ``True`` all properties including properties set multiple times with different values or priorities for different UAs are returned. The order of the properties is fully kept as in the original stylesheet. :returns: a list of :class:`~cssutils.css.Property` objects set in this declaration. csg|]}|qSr)r).0rrrr sz5CSSStyleDeclaration.getProperties..) rrrr3r)rrrrO)r rrFpnnamerrQrRrrrrKs    z!CSSStyleDeclaration.getPropertiesTcCs`||}d}t|jD]!}|j}t|tr-|r||jks"||jkr-|jr)|S|s-|}q |S)a :param name: of the CSS property, always lowercase (even if not normalized) :param normalize: if ``True`` (DEFAULT) name will be normalized (lowercase, no simple escapes) so "color", "COLOR" or "C\olor" will all be equivalent If ``False`` may return **NOT** the effective value but the effective for the unnormalized name. :returns: the effective :class:`~cssutils.css.Property` object. N) rrNr3r)rrr literalnamer*)r r normalizerfoundrQrRrrrrs  zCSSStyleDeclaration.getPropertycCsB||}||jvr|jjd|dd|||}|r|jSdS)a :param name: of the CSS property, always lowercase (even if not normalized) :param normalize: if ``True`` (DEFAULT) name will be normalized (lowercase, no simple escapes) so "color", "COLOR" or "C\olor" will all be equivalent If ``False`` may return **NOT** the effective value but the effective for the unnormalized name. :returns: ``~cssutils.css.CSSValue``, the value of the effective property if it has been explicitly set for this declaration block. (DOM) Used to retrieve the object representation of the value of a CSS property if it has been explicitly set within this declaration block. Returns None if the property has not been set. (This method returns None if the property is a shorthand property. Shorthand property values can only be accessed and modified as strings, using the getPropertyValue and setProperty methods.) **cssutils currently always returns a CSSValue if the property is set.** for more on shorthand properties see http://www.dustindiaz.com/css-shorthand/ zSCSSValue for shorthand property "%s" should be None, this may be implemented later.TrqN)r_SHORTHANDPROPERTIESr0rsr propertyValue)r rrrrrrrgetPropertyCSSValues   z'CSSStyleDeclaration.getPropertyCSSValuecCs|||}|r |jS|S)a :param name: of the CSS property, always lowercase (even if not normalized) :param normalize: if ``True`` (DEFAULT) name will be normalized (lowercase, no simple escapes) so "color", "COLOR" or "C\olor" will all be equivalent If ``False`` may return **NOT** the effective value but the effective for the unnormalized name. :param default: value to be returned if the property has not been set. :returns: the value of the effective property if it has been explicitly set for this declaration block. Returns `default` if the property has not been set. )rr))r rrryrrrrr#s z$CSSStyleDeclaration.getPropertyValuecCs|||}|r |jSdS)a :param name: of the CSS property, always lowercase (even if not normalized) :param normalize: if ``True`` (DEFAULT) name will be normalized (lowercase, no simple escapes) so "color", "COLOR" or "C\olor" will all be equivalent If ``False`` may return **NOT** the effective value but the effective for the unnormalized name. :returns: the priority of the effective CSS property (e.g. the "important" qualifier) if the property has been explicitly set in this declaration block. The empty string if none exists. r)rr*)r rrrrrrgetPropertyPriority s z'CSSStyleDeclaration.getPropertyPrioritycCs||j||d}|}|r.||}|jD]}t|jtr'|jj|ks,| |qn|jD]}t|jtr?|jj |ksD| |q1| ||S)a (DOM) Used to remove a CSS property if it has been explicitly set within this declaration block. :param name: of the CSS property :param normalize: if ``True`` (DEFAULT) name will be normalized (lowercase, no simple escapes) so "color", "COLOR" or "C\olor" will all be equivalent. The effective Property value is returned and *all* Properties with ``Property.name == name`` are removed. If ``False`` may return **NOT** the effective value but the effective for the unnormalized `name` only. Also only the Properties with the literal name `name` are removed. :returns: the value of the property if it has been explicitly set for this declaration block. Returns the empty string if the property has not been set or the property name does not correspond to a known CSS property :exceptions: - :exc:`~xml.dom.NoModificationAllowedErr`: Raised if this declaration is readonly or the property is readonly. )r) rzr#r|rr3rr)rr appendItemrr)r rrrrrrQrrrr-!s$        z"CSSStyleDeclaration.removePropertyc Cs|t|tr|}|j}n|s||St||||d}|jro|r[||}|j|| d}t|D]&} |rI| j |krI|j j | _ |j | _ dS| j|krZ|j j | _ |j | _ dSq4||_ d|j_|j|dd|j_dS|jd|d|d |dS) a(DOM) Set a property value and priority within this declaration block. :param name: of the CSS property to set (in W3C DOM the parameter is called "propertyName"), always lowercase (even if not normalized) If a property with this `name` is present it will be reset. cssutils also allowed `name` to be a :class:`~cssutils.css.Property` object, all other parameter are ignored in this case :param value: the new value of the property, ignored if `name` is a Property. :param priority: the optional priority of the property (e.g. "important"), ignored if `name` is a Property. :param normalize: if True (DEFAULT) `name` will be normalized (lowercase, no simple escapes) so "color", "COLOR" or "C\olor" will all be equivalent :param replace: if True (DEFAULT) the given property will replace a present property. If False a new property will be added always. The difference to `normalize` is that two or more properties with the same name may be set, useful for e.g. stuff like:: background: red; background: rgba(255, 0, 0, 0.5); which defines the same property but only capable UAs use the last property value, older ones use the first value. :exceptions: - :exc:`~xml.dom.SyntaxErr`: Raised if the specified value has a syntax error and is unparsable. - :exc:`~xml.dom.NoModificationAllowedErr`: Raised if this declaration is readonly or the property is readonly. rarENFrTzInvalid Property: z: r?)rzrrrr-r5rrKrNrrr r*rbr3r rOr0warn) r rr)r*rreplacenewprrrlrrrr(Qs4*        "zCSSStyleDeclaration.setPropertycCs,t|}z||WStyYdSw)a(DOM) Retrieve the properties that have been explicitly set in this declaration block. The order of the properties retrieved using this method does not have to be the order in which they were set. This method can be used to iterate over all properties in this declaration block. :param index: of the property to retrieve, negative values behave like negative indexes on Python lists, so -1 is the last element :returns: the name of the property at this ordinal position. The empty string if no property exists at this position. **ATTENTION:** Only properties with different names are counted. If two properties with the same name are present in this declaration only the effective one is included. :meth:`item` and :attr:`length` work on the same set here. r)rr IndexError)r indexrPrrrrQs   zCSSStyleDeclaration.itemcCstt|Sr)rJrrrrrrrsa(DOM) The number of distinct properties that have been explicitly in this declaration block. The range of valid indices is 0 to length-1 inclusive. These are properties with a different ``name`` only. :meth:`item` and :attr:`length` work on the same set here.cCs6z|jjjWSty|jdur|jYSYdSw)NT)rparentStyleSheetr r;r7rrrr_getValidatings    z"CSSStyleDeclaration._getValidatingcCrr)r7)r r rrr_setValidatingrz"CSSStyleDeclaration._setValidatingzIf ``True`` this declaration validates contained properties. The parent StyleSheet validation setting does *always* win though so even if validating is True it may not validate if the StyleSheet defines else!cCstdd|DS)z+Check each contained property for validity.css|]}|jVqdSr)r4)rproprrr sz0CSSStyleDeclaration._getValid..)rFrKrrrr _getValidszCSSStyleDeclaration._getValidz#``True`` if each property is valid.)rNFNr)NF)T)Tr)NrTT))rB __module__ __qualname____doc__rrrr r&r+r.r:rDrMrrTrUrVrWr\rrlr rCrrrKrrr#rr-r(rQrIrrr rr4 __classcell__rrrrr=sh$   " J    '  ,   0M   ) r__all__rY csspropertiesrrlrutilBase2rrrrrs 4