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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "nsIDOMCSSValue.h"
#include "nsIDOMCSSPrimitiveValue.h"
#include "nsCSSKeywords.h"
#include "CSSValue.h"
#include "nsCOMPtr.h"
#include "nsCoord.h"
class nsIURI;
class nsDOMCSSRect;
class nsDOMCSSRGBColor;
// There is no CSS_TURN constant on the CSSPrimitiveValue interface,
// since that unit is newer than DOM Level 2 Style, and CSS OM will
// probably expose CSS values in some other way in the future. We
// use this value in mType for "turn"-unit angles, but we define it
// here to avoid exposing it to content.
#define CSS_TURN 30U
// Likewise we have some internal aliases for CSS_NUMBER that we don't
// want to expose.
#define CSS_NUMBER_INT32 31U
#define CSS_NUMBER_UINT32 32U
/**
* Read-only CSS primitive value - a DOM object representing values in DOM
* computed style.
*/
class nsROCSSPrimitiveValue final : public mozilla::dom::CSSValue,
public nsIDOMCSSPrimitiveValue
{
public:
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_AMBIGUOUS(nsROCSSPrimitiveValue, mozilla::dom::CSSValue)
// nsIDOMCSSPrimitiveValue
NS_DECL_NSIDOMCSSPRIMITIVEVALUE
// nsIDOMCSSValue
NS_DECL_NSIDOMCSSVALUE
// CSSValue
virtual void GetCssText(nsString& aText, mozilla::ErrorResult& aRv) override final;
virtual void SetCssText(const nsAString& aText, mozilla::ErrorResult& aRv) override final;
virtual uint16_t CssValueType() const override final;
// CSSPrimitiveValue
uint16_t PrimitiveType()
{
// New value types were introduced but not added to CSS OM.
// Return CSS_UNKNOWN to avoid exposing CSS_TURN to content.
if (mType > CSS_RGBCOLOR) {
if (mType == CSS_NUMBER_INT32 || mType == CSS_NUMBER_UINT32) {
return CSS_NUMBER;
}
return CSS_UNKNOWN;
}
return mType;
}
void SetFloatValue(uint16_t aUnitType, float aValue,
mozilla::ErrorResult& aRv);
float GetFloatValue(uint16_t aUnitType, mozilla::ErrorResult& aRv);
void GetStringValue(nsString& aString, mozilla::ErrorResult& aRv);
void SetStringValue(uint16_t aUnitType, const nsAString& aString,
mozilla::ErrorResult& aRv);
already_AddRefed<nsIDOMCounter> GetCounterValue(mozilla::ErrorResult& aRv);
nsDOMCSSRect* GetRectValue(mozilla::ErrorResult& aRv);
nsDOMCSSRGBColor *GetRGBColorValue(mozilla::ErrorResult& aRv);
// 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 SetGrad(float aValue);
void SetRadian(float aValue);
void SetTurn(float aValue);
void SetAppUnits(nscoord aValue);
void SetAppUnits(float aValue);
void SetIdent(nsCSSKeyword aKeyword);
// FIXME: CSS_STRING should imply a string with "" and a need for escaping.
void SetString(const nsACString& aString, uint16_t aType = CSS_STRING);
// FIXME: CSS_STRING should imply a string with "" and a need for escaping.
void SetString(const nsAString& aString, uint16_t aType = CSS_STRING);
void SetURI(nsIURI *aURI);
void SetColor(nsDOMCSSRGBColor* aColor);
void SetRect(nsDOMCSSRect* aRect);
void SetTime(float aValue);
void Reset();
nsISupports* GetParentObject() const
{
return nullptr;
}
virtual JSObject *WrapObject(JSContext *cx, JS::Handle<JSObject*> aGivenProto) override;
private:
~nsROCSSPrimitiveValue();
uint16_t mType;
union {
nscoord mAppUnits;
float mFloat;
int32_t mInt32;
uint32_t mUint32;
// These can't be nsCOMPtr/nsRefPtr's because they are used inside a union.
nsDOMCSSRGBColor* MOZ_OWNING_REF mColor;
nsDOMCSSRect* MOZ_OWNING_REF mRect;
char16_t* mString;
nsIURI* MOZ_OWNING_REF mURI;
nsCSSKeyword mKeyword;
} mValue;
};
inline nsROCSSPrimitiveValue *mozilla::dom::CSSValue::AsPrimitiveValue()
{
return CssValueType() == nsIDOMCSSValue::CSS_PRIMITIVE_VALUE ?
static_cast<nsROCSSPrimitiveValue*>(this) : nullptr;
}
#endif /* nsROCSSPrimitiveValue_h___ */
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