1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/layout/style/nsDOMCSSDeclaration.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,164 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +/* base class for DOM objects for element.style and cssStyleRule.style */
1.10 +
1.11 +#ifndef nsDOMCSSDeclaration_h___
1.12 +#define nsDOMCSSDeclaration_h___
1.13 +
1.14 +#include "nsICSSDeclaration.h"
1.15 +
1.16 +#include "mozilla/Attributes.h"
1.17 +#include "nsCOMPtr.h"
1.18 +
1.19 +class nsIPrincipal;
1.20 +class nsIDocument;
1.21 +struct JSContext;
1.22 +class JSObject;
1.23 +
1.24 +namespace mozilla {
1.25 +namespace css {
1.26 +class Declaration;
1.27 +class Loader;
1.28 +class Rule;
1.29 +}
1.30 +}
1.31 +
1.32 +class nsDOMCSSDeclaration : public nsICSSDeclaration
1.33 +{
1.34 +public:
1.35 + // Only implement QueryInterface; subclasses have the responsibility
1.36 + // of implementing AddRef/Release.
1.37 + NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr) MOZ_OVERRIDE;
1.38 +
1.39 + // Declare addref and release so they can be called on us, but don't
1.40 + // implement them. Our subclasses must handle their own
1.41 + // refcounting.
1.42 + NS_IMETHOD_(MozExternalRefCountType) AddRef() MOZ_OVERRIDE = 0;
1.43 + NS_IMETHOD_(MozExternalRefCountType) Release() MOZ_OVERRIDE = 0;
1.44 +
1.45 + NS_DECL_NSICSSDECLARATION
1.46 + using nsICSSDeclaration::GetLength;
1.47 +
1.48 + // Require subclasses to implement |GetParentRule|.
1.49 + //NS_DECL_NSIDOMCSSSTYLEDECLARATION
1.50 + NS_IMETHOD GetCssText(nsAString & aCssText) MOZ_OVERRIDE;
1.51 + NS_IMETHOD SetCssText(const nsAString & aCssText) MOZ_OVERRIDE;
1.52 + NS_IMETHOD GetPropertyValue(const nsAString & propertyName,
1.53 + nsAString & _retval) MOZ_OVERRIDE;
1.54 + virtual already_AddRefed<mozilla::dom::CSSValue>
1.55 + GetPropertyCSSValue(const nsAString & propertyName,
1.56 + mozilla::ErrorResult& aRv) MOZ_OVERRIDE;
1.57 + using nsICSSDeclaration::GetPropertyCSSValue;
1.58 + NS_IMETHOD RemoveProperty(const nsAString & propertyName,
1.59 + nsAString & _retval) MOZ_OVERRIDE;
1.60 + NS_IMETHOD GetPropertyPriority(const nsAString & propertyName,
1.61 + nsAString & _retval) MOZ_OVERRIDE;
1.62 + NS_IMETHOD SetProperty(const nsAString & propertyName,
1.63 + const nsAString & value, const nsAString & priority) MOZ_OVERRIDE;
1.64 + NS_IMETHOD GetLength(uint32_t *aLength) MOZ_OVERRIDE;
1.65 + NS_IMETHOD GetParentRule(nsIDOMCSSRule * *aParentRule) MOZ_OVERRIDE = 0;
1.66 +
1.67 + // WebIDL interface for CSS2Properties
1.68 +#define CSS_PROP_PUBLIC_OR_PRIVATE(publicname_, privatename_) publicname_
1.69 +#define CSS_PROP(name_, id_, method_, flags_, pref_, parsevariant_, \
1.70 + kwtable_, stylestruct_, stylestructoffset_, animtype_) \
1.71 + void \
1.72 + Get##method_(nsAString& aValue, mozilla::ErrorResult& rv) \
1.73 + { \
1.74 + rv = GetPropertyValue(eCSSProperty_##id_, aValue); \
1.75 + } \
1.76 + \
1.77 + void \
1.78 + Set##method_(const nsAString& aValue, mozilla::ErrorResult& rv) \
1.79 + { \
1.80 + rv = SetPropertyValue(eCSSProperty_##id_, aValue); \
1.81 + }
1.82 +
1.83 +#define CSS_PROP_LIST_EXCLUDE_INTERNAL
1.84 +#define CSS_PROP_SHORTHAND(name_, id_, method_, flags_, pref_) \
1.85 + CSS_PROP(name_, id_, method_, flags_, pref_, X, X, X, X, X)
1.86 +#include "nsCSSPropList.h"
1.87 +
1.88 +#define CSS_PROP_ALIAS(aliasname_, propid_, aliasmethod_, pref_) \
1.89 + CSS_PROP(X, propid_, aliasmethod_, X, pref_, X, X, X, X, X)
1.90 +#include "nsCSSPropAliasList.h"
1.91 +#undef CSS_PROP_ALIAS
1.92 +
1.93 +#undef CSS_PROP_SHORTHAND
1.94 +#undef CSS_PROP_LIST_EXCLUDE_INTERNAL
1.95 +#undef CSS_PROP
1.96 +#undef CSS_PROP_PUBLIC_OR_PRIVATE
1.97 +
1.98 + virtual void IndexedGetter(uint32_t aIndex, bool& aFound, nsAString& aPropName) MOZ_OVERRIDE;
1.99 +
1.100 + virtual JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE;
1.101 +
1.102 +protected:
1.103 + // This method can return null regardless of the value of aAllocate;
1.104 + // however, a null return should only be considered a failure
1.105 + // if aAllocate is true.
1.106 + virtual mozilla::css::Declaration* GetCSSDeclaration(bool aAllocate) = 0;
1.107 + virtual nsresult SetCSSDeclaration(mozilla::css::Declaration* aDecl) = 0;
1.108 + // Document that we must call BeginUpdate/EndUpdate on around the
1.109 + // calls to SetCSSDeclaration and the style rule mutation that leads
1.110 + // to it.
1.111 + virtual nsIDocument* DocToUpdate() = 0;
1.112 +
1.113 + // Information neded to parse a declaration. We need the mSheetURI
1.114 + // for error reporting, mBaseURI to resolve relative URIs,
1.115 + // mPrincipal for subresource loads, and mCSSLoader for determining
1.116 + // whether we're in quirks mode. mBaseURI needs to be a strong
1.117 + // pointer because of xml:base possibly creating base URIs on the
1.118 + // fly. This is why we don't use CSSParsingEnvironment as a return
1.119 + // value, to avoid multiple-refcounting of mBaseURI.
1.120 + struct CSSParsingEnvironment {
1.121 + nsIURI* mSheetURI;
1.122 + nsCOMPtr<nsIURI> mBaseURI;
1.123 + nsIPrincipal* mPrincipal;
1.124 + mozilla::css::Loader* mCSSLoader;
1.125 + };
1.126 +
1.127 + // On failure, mPrincipal should be set to null in aCSSParseEnv.
1.128 + // If mPrincipal is null, the other members may not be set to
1.129 + // anything meaningful.
1.130 + virtual void GetCSSParsingEnvironment(CSSParsingEnvironment& aCSSParseEnv) = 0;
1.131 +
1.132 + // An implementation for GetCSSParsingEnvironment for callers wrapping
1.133 + // an css::Rule.
1.134 + static void GetCSSParsingEnvironmentForRule(mozilla::css::Rule* aRule,
1.135 + CSSParsingEnvironment& aCSSParseEnv);
1.136 +
1.137 + nsresult ParsePropertyValue(const nsCSSProperty aPropID,
1.138 + const nsAString& aPropValue,
1.139 + bool aIsImportant);
1.140 +
1.141 + // Prop-id based version of RemoveProperty. Note that this does not
1.142 + // return the old value; it just does a straight removal.
1.143 + nsresult RemoveProperty(const nsCSSProperty aPropID);
1.144 +
1.145 + void GetCustomPropertyValue(const nsAString& aPropertyName, nsAString& aValue);
1.146 + nsresult RemoveCustomProperty(const nsAString& aPropertyName);
1.147 + nsresult ParseCustomPropertyValue(const nsAString& aPropertyName,
1.148 + const nsAString& aPropValue,
1.149 + bool aIsImportant);
1.150 +
1.151 +protected:
1.152 + virtual ~nsDOMCSSDeclaration();
1.153 + nsDOMCSSDeclaration()
1.154 + {
1.155 + SetIsDOMBinding();
1.156 + }
1.157 +};
1.158 +
1.159 +bool IsCSSPropertyExposedToJS(nsCSSProperty aProperty, JSContext* cx, JSObject* obj);
1.160 +
1.161 +template <nsCSSProperty Property>
1.162 +MOZ_ALWAYS_INLINE bool IsCSSPropertyExposedToJS(JSContext* cx, JSObject* obj)
1.163 +{
1.164 + return IsCSSPropertyExposedToJS(Property, cx, obj);
1.165 +}
1.166 +
1.167 +#endif // nsDOMCSSDeclaration_h___
