layout/style/nsHTMLCSSStyleSheet.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 /*
   7  * style sheet and style rule processor representing style attributes
   8  */
   9
  10 #ifndef nsHTMLCSSStyleSheet_h_
  11 #define nsHTMLCSSStyleSheet_h_
  12
  13 #include "mozilla/Attributes.h"
  14
  15 #include "nsCOMPtr.h"
  16 #include "nsDataHashtable.h"
  17 #include "nsIStyleSheet.h"
  18 #include "nsIStyleRuleProcessor.h"
  19
  20 struct MiscContainer;
  21
  22 class nsHTMLCSSStyleSheet MOZ_FINAL : public nsIStyleSheet,
  23                                       public nsIStyleRuleProcessor {
  24 public:
  25   nsHTMLCSSStyleSheet();
  26   ~nsHTMLCSSStyleSheet();
  27
  28   NS_DECL_ISUPPORTS
  29
  30   nsresult Init(nsIURI* aURL, nsIDocument* aDocument);
  31   void Reset(nsIURI* aURL);
  32
  33   // nsIStyleSheet
  34   virtual nsIURI* GetSheetURI() const;
  35   virtual nsIURI* GetBaseURI() const MOZ_OVERRIDE;
  36   virtual void GetTitle(nsString& aTitle) const MOZ_OVERRIDE;
  37   virtual void GetType(nsString& aType) const MOZ_OVERRIDE;
  38   virtual bool HasRules() const MOZ_OVERRIDE;
  39   virtual bool IsApplicable() const MOZ_OVERRIDE;
  40   virtual void SetEnabled(bool aEnabled) MOZ_OVERRIDE;
  41   virtual bool IsComplete() const MOZ_OVERRIDE;
  42   virtual void SetComplete() MOZ_OVERRIDE;
  43   virtual nsIStyleSheet* GetParentSheet() const MOZ_OVERRIDE;  // will be null
  44   virtual nsIDocument* GetOwningDocument() const MOZ_OVERRIDE;
  45   virtual void SetOwningDocument(nsIDocument* aDocument) MOZ_OVERRIDE;
  46 #ifdef DEBUG
  47   virtual void List(FILE* out = stdout, int32_t aIndent = 0) const MOZ_OVERRIDE;
  48 #endif
  49
  50   // nsIStyleRuleProcessor
  51   virtual void RulesMatching(ElementRuleProcessorData* aData) MOZ_OVERRIDE;
  52   virtual void RulesMatching(PseudoElementRuleProcessorData* aData) MOZ_OVERRIDE;
  53   virtual void RulesMatching(AnonBoxRuleProcessorData* aData) MOZ_OVERRIDE;
  54 #ifdef MOZ_XUL
  55   virtual void RulesMatching(XULTreeRuleProcessorData* aData) MOZ_OVERRIDE;
  56 #endif
  57   virtual nsRestyleHint HasStateDependentStyle(StateRuleProcessorData* aData) MOZ_OVERRIDE;
  58   virtual bool HasDocumentStateDependentStyle(StateRuleProcessorData* aData) MOZ_OVERRIDE;
  59   virtual nsRestyleHint
  60     HasAttributeDependentStyle(AttributeRuleProcessorData* aData) MOZ_OVERRIDE;
  61   virtual bool MediumFeaturesChanged(nsPresContext* aPresContext) MOZ_OVERRIDE;
  62   virtual size_t SizeOfExcludingThis(nsMallocSizeOfFun aMallocSizeOf)
  63     const MOZ_MUST_OVERRIDE MOZ_OVERRIDE;
  64   virtual size_t SizeOfIncludingThis(nsMallocSizeOfFun aMallocSizeOf)
  65     const MOZ_MUST_OVERRIDE MOZ_OVERRIDE;
  66
  67   void CacheStyleAttr(const nsAString& aSerialized, MiscContainer* aValue);
  68   void EvictStyleAttr(const nsAString& aSerialized, MiscContainer* aValue);
  69   MiscContainer* LookupStyleAttr(const nsAString& aSerialized);
  70
  71 private:
  72   nsHTMLCSSStyleSheet(const nsHTMLCSSStyleSheet& aCopy) MOZ_DELETE;
  73   nsHTMLCSSStyleSheet& operator=(const nsHTMLCSSStyleSheet& aCopy) MOZ_DELETE;
  74
  75 protected:
  76   nsCOMPtr<nsIURI> mURL;
  77   nsIDocument*     mDocument;
  78   nsDataHashtable<nsStringHashKey, MiscContainer*> mCachedStyleAttrs;
  79 };
  80
  81 inline nsISupports*
  82 ToSupports(nsHTMLCSSStyleSheet* aPointer)
  83 {
  84   return static_cast<nsIStyleSheet*>(aPointer);
  85 }
  86
  87 #endif /* !defined(nsHTMLCSSStyleSheet_h_) */