CSSValue.h (1314B)
1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ 2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */ 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/. */ 6 7 /* DOM object representing values in DOM computed style */ 8 9 #ifndef mozilla_dom_CSSValue_h_ 10 #define mozilla_dom_CSSValue_h_ 11 12 #include "mozilla/RefCounted.h" 13 #include "nsStringFwd.h" 14 15 class nsROCSSPrimitiveValue; 16 namespace mozilla { 17 class ErrorResult; 18 } // namespace mozilla 19 20 namespace mozilla::dom { 21 22 /** 23 * CSSValue - a DOM object representing values in DOM computed style. 24 */ 25 class CSSValue : public RefCounted<CSSValue> { 26 public: 27 MOZ_DECLARE_REFCOUNTED_TYPENAME(CSSValue); 28 enum : uint16_t { 29 CSS_INHERIT, 30 CSS_PRIMITIVE_VALUE, 31 CSS_VALUE_LIST, 32 CSS_CUSTOM, 33 }; 34 35 // CSSValue 36 virtual void GetCssText(nsAString&) = 0; 37 virtual uint16_t CssValueType() const = 0; 38 39 virtual ~CSSValue() = default; 40 41 // Downcasting 42 43 /** 44 * Return this as a nsROCSSPrimitiveValue* if its a primitive value, and null 45 * otherwise. 46 * 47 * Defined in nsROCSSPrimitiveValue.h. 48 */ 49 inline nsROCSSPrimitiveValue* AsPrimitiveValue(); 50 }; 51 52 } // namespace mozilla::dom 53 54 #endif