The Tor Browser: layout/style/nsHTMLStyleSheet.h@7e26c7da4463

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-

     2  *

     3  * This Source Code Form is subject to the terms of the Mozilla Public

     4  * License, v. 2.0. If a copy of the MPL was not distributed with this

     5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     7 /*

     8  * style sheet and style rule processor representing data from presentational

     9  * HTML attributes

    10  */

    12 #ifndef nsHTMLStyleSheet_h_

    13 #define nsHTMLStyleSheet_h_

    15 #include "nsAutoPtr.h"

    16 #include "nsColor.h"

    17 #include "nsCOMPtr.h"

    18 #include "nsIStyleRule.h"

    19 #include "nsIStyleRuleProcessor.h"

    20 #include "pldhash.h"

    21 #include "mozilla/Attributes.h"

    22 #include "mozilla/MemoryReporting.h"

    23 #include "nsString.h"

    25 class nsIDocument;

    26 class nsMappedAttributes;

    28 class nsHTMLStyleSheet MOZ_FINAL : public nsIStyleRuleProcessor

    29 {

    30 public:

    31   nsHTMLStyleSheet(nsIDocument* aDocument);

    33   void SetOwningDocument(nsIDocument* aDocument);

    35   NS_DECL_ISUPPORTS

    37   // nsIStyleRuleProcessor API

    38   virtual void RulesMatching(ElementRuleProcessorData* aData) MOZ_OVERRIDE;

    39   virtual void RulesMatching(PseudoElementRuleProcessorData* aData) MOZ_OVERRIDE;

    40   virtual void RulesMatching(AnonBoxRuleProcessorData* aData) MOZ_OVERRIDE;

    41 #ifdef MOZ_XUL

    42   virtual void RulesMatching(XULTreeRuleProcessorData* aData) MOZ_OVERRIDE;

    43 #endif

    44   virtual nsRestyleHint HasStateDependentStyle(StateRuleProcessorData* aData) MOZ_OVERRIDE;

    45   virtual nsRestyleHint HasStateDependentStyle(PseudoElementStateRuleProcessorData* aData) MOZ_OVERRIDE;

    46   virtual bool HasDocumentStateDependentStyle(StateRuleProcessorData* aData) MOZ_OVERRIDE;

    47   virtual nsRestyleHint

    48     HasAttributeDependentStyle(AttributeRuleProcessorData* aData) MOZ_OVERRIDE;

    49   virtual bool MediumFeaturesChanged(nsPresContext* aPresContext) MOZ_OVERRIDE;

    50   virtual size_t SizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf)

    51     const MOZ_MUST_OVERRIDE MOZ_OVERRIDE;

    52   virtual size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf)

    53     const MOZ_MUST_OVERRIDE MOZ_OVERRIDE;

    54   size_t DOMSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;

    56   void Reset();

    57   nsresult SetLinkColor(nscolor aColor);

    58   nsresult SetActiveLinkColor(nscolor aColor);

    59   nsresult SetVisitedLinkColor(nscolor aColor);

    61   // Mapped Attribute management methods

    62   already_AddRefed<nsMappedAttributes>

    63     UniqueMappedAttributes(nsMappedAttributes* aMapped);

    64   void DropMappedAttributes(nsMappedAttributes* aMapped);

    66   nsIStyleRule* LangRuleFor(const nsString& aLanguage);

    68 private:

    69   nsHTMLStyleSheet(const nsHTMLStyleSheet& aCopy) MOZ_DELETE;

    70   nsHTMLStyleSheet& operator=(const nsHTMLStyleSheet& aCopy) MOZ_DELETE;

    72   ~nsHTMLStyleSheet();

    74   class HTMLColorRule;

    75   friend class HTMLColorRule;

    76   class HTMLColorRule MOZ_FINAL : public nsIStyleRule {

    77   public:

    78     HTMLColorRule() {}

    80     NS_DECL_ISUPPORTS

    82     // nsIStyleRule interface

    83     virtual void MapRuleInfoInto(nsRuleData* aRuleData) MOZ_OVERRIDE;

    84   #ifdef DEBUG

    85     virtual void List(FILE* out = stdout, int32_t aIndent = 0) const MOZ_OVERRIDE;

    86   #endif

    88     nscolor             mColor;

    89   };

    91   // Implementation of SetLink/VisitedLink/ActiveLinkColor

    92   nsresult ImplLinkColorSetter(nsRefPtr<HTMLColorRule>& aRule, nscolor aColor);

    94   class GenericTableRule;

    95   friend class GenericTableRule;

    96   class GenericTableRule : public nsIStyleRule {

    97   public:

    98     GenericTableRule() {}

    99     virtual ~GenericTableRule() {}

   101     NS_DECL_ISUPPORTS

   103     // nsIStyleRule interface

   104     virtual void MapRuleInfoInto(nsRuleData* aRuleData) MOZ_OVERRIDE = 0;

   105   #ifdef DEBUG

   106     virtual void List(FILE* out = stdout, int32_t aIndent = 0) const MOZ_OVERRIDE;

   107   #endif

   108   };

   110   // this rule handles <th> inheritance

   111   class TableTHRule;

   112   friend class TableTHRule;

   113   class TableTHRule MOZ_FINAL : public GenericTableRule {

   114   public:

   115     TableTHRule() {}

   117     virtual void MapRuleInfoInto(nsRuleData* aRuleData) MOZ_OVERRIDE;

   118   };

   120   // Rule to handle quirk table colors

   121   class TableQuirkColorRule MOZ_FINAL : public GenericTableRule {

   122   public:

   123     TableQuirkColorRule() {}

   125     virtual void MapRuleInfoInto(nsRuleData* aRuleData) MOZ_OVERRIDE;

   126   };

   128 public: // for mLangRuleTable structures only

   130   // Rule to handle xml:lang attributes, of which we have exactly one

   131   // per language string, maintained in mLangRuleTable.

   132   class LangRule MOZ_FINAL : public nsIStyleRule {

   133   public:

   134     LangRule(const nsSubstring& aLang) : mLang(aLang) {}

   136     NS_DECL_ISUPPORTS

   138     // nsIStyleRule interface

   139     virtual void MapRuleInfoInto(nsRuleData* aRuleData) MOZ_OVERRIDE;

   140   #ifdef DEBUG

   141     virtual void List(FILE* out = stdout, int32_t aIndent = 0) const MOZ_OVERRIDE;

   142   #endif

   144     nsString mLang;

   145   };

   147 private:

   148   nsIDocument*            mDocument;

   149   nsRefPtr<HTMLColorRule> mLinkRule;

   150   nsRefPtr<HTMLColorRule> mVisitedRule;

   151   nsRefPtr<HTMLColorRule> mActiveRule;

   152   nsRefPtr<TableQuirkColorRule> mTableQuirkColorRule;

   153   nsRefPtr<TableTHRule>   mTableTHRule;

   155   PLDHashTable            mMappedAttrTable;

   156   PLDHashTable            mLangRuleTable;

   157 };

   159 #endif /* !defined(nsHTMLStyleSheet_h_) */

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