1 files changed, 83 insertions, 0 deletions
diff --git a/layout/style/nsROCSSPrimitiveValue.h b/layout/style/nsROCSSPrimitiveValue.h
new file mode 100644
index 0000000000..d782a23469
--- /dev/null
+++ b/layout/style/nsROCSSPrimitiveValue.h
@@ -0,0 +1,83 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* DOM object representing values in DOM computed style */
+
+#ifndef nsROCSSPrimitiveValue_h___
+#define nsROCSSPrimitiveValue_h___
+
+#include "CSSValue.h"
+#include "nsCoord.h"
+#include "nsString.h"
+
+/**
+ * Read-only CSS primitive value - a DOM object representing values in DOM
+ * computed style.
+ */
+class nsROCSSPrimitiveValue final : public mozilla::dom::CSSValue {
+ public:
+  enum : uint16_t {
+    CSS_UNKNOWN,
+    CSS_NUMBER,
+    CSS_PERCENTAGE,
+    CSS_PX,
+    CSS_DEG,
+    CSS_S,
+    CSS_STRING,
+    CSS_RGBCOLOR,
+    CSS_NUMBER_INT32,
+    CSS_NUMBER_UINT32,
+  };
+
+  // CSSValue
+  void GetCssText(nsAString&) final;
+  uint16_t CssValueType() const final;
+
+  // CSSPrimitiveValue
+  uint16_t PrimitiveType();
+
+  // nsROCSSPrimitiveValue
+  nsROCSSPrimitiveValue();
+
+  void SetNumber(float aValue);
+  void SetNumber(int32_t aValue);
+  void SetNumber(uint32_t aValue);
+  void SetPercent(float aValue);
+  void SetDegree(float aValue);
+  void SetPixels(float aValue);
+  void SetAppUnits(nscoord aValue);
+  void SetAppUnits(float aValue);
+  void SetString(const nsACString& aString);
+  void SetString(const nsAString& aString);
+
+  template <size_t N>
+  void SetString(const char (&aString)[N]) {
+    SetString(nsLiteralCString(aString));
+  }
+
+  void SetTime(float aValue);
+  void Reset();
+
+  virtual ~nsROCSSPrimitiveValue();
+
+ protected:
+  uint16_t mType;
+
+  union {
+    float mFloat;
+    int32_t mInt32;
+    uint32_t mUint32;
+    char16_t* mString;
+  } mValue;
+};
+
+inline nsROCSSPrimitiveValue* mozilla::dom::CSSValue::AsPrimitiveValue() {
+  return CssValueType() == mozilla::dom::CSSValue::CSS_PRIMITIVE_VALUE
+             ? static_cast<nsROCSSPrimitiveValue*>(this)
+             : nullptr;
+}
+
+#endif /* nsROCSSPrimitiveValue_h___ */