layout/style/nsHTMLStyleSheet.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   2  *
   3  * ***** BEGIN LICENSE BLOCK *****
   4  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   5  *
   6  * The contents of this file are subject to the Mozilla Public License Version
   7  * 1.1 (the "License"); you may not use this file except in compliance with
   8  * the License. You may obtain a copy of the License at
   9  * http://www.mozilla.org/MPL/
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  11  * Software distributed under the License is distributed on an "AS IS" basis,
  12  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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  15  *
  16  * The Original Code is mozilla.org code.
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  18  * The Initial Developer of the Original Code is
  19  * Netscape Communications Corporation.
  20  * Portions created by the Initial Developer are Copyright (C) 1998
  21  * the Initial Developer. All Rights Reserved.
  22  *
  23  * Contributor(s):
  24  *   Pierre Phaneuf <pp@ludusdesign.com>
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  26  * Alternatively, the contents of this file may be used under the terms of
  27  * either of the GNU General Public License Version 2 or later (the "GPL"),
  28  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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  38  * ***** END LICENSE BLOCK ***** */
  39
  40 /*
  41  * style sheet and style rule processor representing data from presentational
  42  * HTML attributes
  43  */
  44
  45 #ifndef nsHTMLStyleSheet_h_
  46 #define nsHTMLStyleSheet_h_
  47
  48 #include "nsIStyleSheet.h"
  49 #include "nsIStyleRuleProcessor.h"
  50 #include "nsIStyleRule.h"
  51 #include "pldhash.h"
  52 #include "nsCOMPtr.h"
  53 class nsMappedAttributes;
  54
  55 class nsHTMLStyleSheet : public nsIStyleSheet, public nsIStyleRuleProcessor {
  56 public:
  57   nsHTMLStyleSheet(void);
  58   nsresult Init();
  59
  60   NS_DECL_ISUPPORTS
  61
  62   // nsIStyleSheet api
  63   NS_IMETHOD GetSheetURI(nsIURI** aSheetURL) const;
  64   NS_IMETHOD GetBaseURI(nsIURI** aBaseURL) const;
  65   NS_IMETHOD GetTitle(nsString& aTitle) const;
  66   NS_IMETHOD GetType(nsString& aType) const;
  67   NS_IMETHOD_(PRBool) HasRules() const;
  68   NS_IMETHOD GetApplicable(PRBool& aApplicable) const;
  69   NS_IMETHOD SetEnabled(PRBool aEnabled);
  70   NS_IMETHOD GetComplete(PRBool& aComplete) const;
  71   NS_IMETHOD SetComplete();
  72   NS_IMETHOD GetParentSheet(nsIStyleSheet*& aParent) const;  // will be null
  73   NS_IMETHOD GetOwningDocument(nsIDocument*& aDocument) const;
  74   NS_IMETHOD SetOwningDocument(nsIDocument* aDocumemt);
  75 #ifdef DEBUG
  76   virtual void List(FILE* out = stdout, PRInt32 aIndent = 0) const;
  77 #endif
  78
  79   // nsIStyleRuleProcessor API
  80   NS_IMETHOD RulesMatching(ElementRuleProcessorData* aData);
  81   NS_IMETHOD RulesMatching(PseudoRuleProcessorData* aData);
  82   NS_IMETHOD HasStateDependentStyle(StateRuleProcessorData* aData,
  83                                     nsReStyleHint* aResult);
  84   NS_IMETHOD HasAttributeDependentStyle(AttributeRuleProcessorData* aData,
  85                                         nsReStyleHint* aResult);
  86   NS_IMETHOD MediumFeaturesChanged(nsPresContext* aPresContext,
  87                                    PRBool* aRulesChanged);
  88
  89   nsresult Init(nsIURI* aURL, nsIDocument* aDocument);
  90   nsresult Reset(nsIURI* aURL);
  91   nsresult GetLinkColor(nscolor& aColor);
  92   nsresult GetActiveLinkColor(nscolor& aColor);
  93   nsresult GetVisitedLinkColor(nscolor& aColor);
  94   nsresult SetLinkColor(nscolor aColor);
  95   nsresult SetActiveLinkColor(nscolor aColor);
  96   nsresult SetVisitedLinkColor(nscolor aColor);
  97
  98   // Mapped Attribute management methods
  99   already_AddRefed<nsMappedAttributes>
 100     UniqueMappedAttributes(nsMappedAttributes* aMapped);
 101   void DropMappedAttributes(nsMappedAttributes* aMapped);
 102
 103
 104 private:
 105   // These are not supported and are not implemented!
 106   nsHTMLStyleSheet(const nsHTMLStyleSheet& aCopy);
 107   nsHTMLStyleSheet& operator=(const nsHTMLStyleSheet& aCopy);
 108
 109   ~nsHTMLStyleSheet();
 110
 111   class HTMLColorRule;
 112   friend class HTMLColorRule;
 113   class HTMLColorRule : public nsIStyleRule {
 114   public:
 115     HTMLColorRule() {}
 116
 117     NS_DECL_ISUPPORTS
 118
 119     // nsIStyleRule interface
 120     NS_IMETHOD MapRuleInfoInto(nsRuleData* aRuleData);
 121   #ifdef DEBUG
 122     NS_IMETHOD List(FILE* out = stdout, PRInt32 aIndent = 0) const;
 123   #endif
 124
 125     nscolor             mColor;
 126   };
 127
 128
 129   class GenericTableRule;
 130   friend class GenericTableRule;
 131   class GenericTableRule: public nsIStyleRule {
 132   public:
 133     GenericTableRule() {}
 134
 135     NS_DECL_ISUPPORTS
 136
 137     // nsIStyleRule interface
 138     NS_IMETHOD MapRuleInfoInto(nsRuleData* aRuleData);
 139   #ifdef DEBUG
 140     NS_IMETHOD List(FILE* out = stdout, PRInt32 aIndent = 0) const;
 141   #endif
 142   };
 143
 144   // this rule handles <th> inheritance
 145   class TableTHRule;
 146   friend class TableTHRule;
 147   class TableTHRule: public GenericTableRule {
 148   public:
 149     TableTHRule() {}
 150
 151     NS_IMETHOD MapRuleInfoInto(nsRuleData* aRuleData);
 152   };
 153
 154   // this rule handles borders on a <thead>, <tbody>, <tfoot> when rules
 155   // is set on its <table>
 156   class TableTbodyRule;
 157   friend class TableTbodyRule;
 158   class TableTbodyRule: public GenericTableRule {
 159   public:
 160     TableTbodyRule() {}
 161
 162     NS_IMETHOD MapRuleInfoInto(nsRuleData* aRuleData);
 163   };
 164
 165   // this rule handles borders on a <row> when rules is set on its <table>
 166   class TableRowRule;
 167   friend class TableRowRule;
 168   class TableRowRule: public GenericTableRule {
 169   public:
 170     TableRowRule() {}
 171
 172     NS_IMETHOD MapRuleInfoInto(nsRuleData* aRuleData);
 173   };
 174
 175   // this rule handles borders on a <colgroup> when rules is set on its <table>
 176   class TableColgroupRule;
 177   friend class TableColgroupRule;
 178   class TableColgroupRule: public GenericTableRule {
 179   public:
 180     TableColgroupRule() {}
 181
 182     NS_IMETHOD MapRuleInfoInto(nsRuleData* aRuleData);
 183   };
 184
 185   // this rule handles borders on a <col> when rules is set on its <table>.
 186   // This should only be used for <col>s which are in a colgroup or anonymous
 187   // cols.
 188   class TableColRule;
 189   friend class TableColRule;
 190   class TableColRule: public GenericTableRule {
 191   public:
 192     TableColRule() {}
 193
 194     NS_IMETHOD MapRuleInfoInto(nsRuleData* aRuleData);
 195   };
 196
 197   // this rule handles borders on a <col> when rules is set on its <table>.
 198   // This should only be used for <col>s which are not in a colgroup.
 199   class TableUngroupedColRule;
 200   friend class TableUngroupedColRule;
 201   class TableUngroupedColRule: public GenericTableRule {
 202   public:
 203     TableUngroupedColRule() {}
 204
 205     NS_IMETHOD MapRuleInfoInto(nsRuleData* aRuleData);
 206   };
 207
 208   nsIURI*              mURL;
 209   nsIDocument*         mDocument;
 210   HTMLColorRule*       mLinkRule;
 211   HTMLColorRule*       mVisitedRule;
 212   HTMLColorRule*       mActiveRule;
 213   HTMLColorRule*       mDocumentColorRule;
 214   TableTbodyRule*      mTableTbodyRule;
 215   TableRowRule*        mTableRowRule;
 216   TableColgroupRule*   mTableColgroupRule;
 217   TableColRule*        mTableColRule;
 218   TableUngroupedColRule* mTableUngroupedColRule;
 219   TableTHRule*         mTableTHRule;
 220
 221   PLDHashTable         mMappedAttrTable;
 222 };
 223
 224 // XXX convenience method. Calls Initialize() automatically.
 225 nsresult
 226 NS_NewHTMLStyleSheet(nsHTMLStyleSheet** aInstancePtrResult, nsIURI* aURL,
 227                      nsIDocument* aDocument);
 228
 229 nsresult
 230 NS_NewHTMLStyleSheet(nsHTMLStyleSheet** aInstancePtrResult);
 231
 232 #endif /* !defined(nsHTMLStyleSheet_h_) */