layout/style/nsICSSRule.h

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  37
  38 /* internal interface for all rule types in a CSS style sheet */
  39
  40 #ifndef nsICSSRule_h___
  41 #define nsICSSRule_h___
  42
  43 #include "nsIStyleRule.h"
  44
  45 class nsICSSStyleSheet;
  46 class nsICSSGroupRule;
  47 class nsIDOMCSSRule;
  48 class nsAString;
  49
  50 // IID for the nsICSSRule interface {b9791e20-1a04-11d3-805a-006008159b5a}
  51 #define NS_ICSS_RULE_IID     \
  52 {0xb9791e20, 0x1a04, 0x11d3, {0x80, 0x5a, 0x00, 0x60, 0x08, 0x15, 0x9b, 0x5a}}
  53
  54 // inheriting from nsIStyleRule is only for style rules, not other rule types
  55 class nsICSSRule : public nsIStyleRule {
  56 public:
  57   NS_DECLARE_STATIC_IID_ACCESSOR(NS_ICSS_RULE_IID)
  58   enum {
  59     UNKNOWN_RULE = 0,
  60     STYLE_RULE = 1,
  61     IMPORT_RULE = 2,
  62     MEDIA_RULE = 3,
  63     FONT_FACE_RULE = 4,
  64     PAGE_RULE = 5,
  65     CHARSET_RULE = 6,
  66     NAMESPACE_RULE = 7,
  67     DOCUMENT_RULE = 8
  68   };
  69
  70   NS_IMETHOD GetType(PRInt32& aType) const = 0;
  71
  72   NS_IMETHOD GetStyleSheet(nsIStyleSheet*& aSheet) const = 0;
  73   NS_IMETHOD SetStyleSheet(nsICSSStyleSheet* aSheet) = 0;
  74   NS_IMETHOD SetParentRule(nsICSSGroupRule* aRule) = 0;
  75
  76   NS_IMETHOD Clone(nsICSSRule*& aClone) const = 0;
  77
  78   // Note that this returns null for inline style rules since they aren't
  79   // supposed to have a DOM rule representation (and our code wouldn't work).
  80   NS_IMETHOD GetDOMRule(nsIDOMCSSRule** aDOMRule) = 0;
  81 };
  82
  83 NS_DEFINE_STATIC_IID_ACCESSOR(nsICSSRule, NS_ICSS_RULE_IID)
  84
  85 /* Define global NS_New* functions for rules that don't need their own
  86    interfaces here */
  87 nsresult
  88 NS_NewCSSCharsetRule(nsICSSRule** aInstancePtrResult,
  89                      const nsAString& aEncoding);
  90
  91 #endif /* nsICSSRule_h___ */