michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: /* DOM object representing values in DOM computed style */
michael@0: 
michael@0: #ifndef nsROCSSPrimitiveValue_h___
michael@0: #define nsROCSSPrimitiveValue_h___
michael@0: 
michael@0: #include "nsIDOMCSSValue.h"
michael@0: #include "nsIDOMCSSPrimitiveValue.h"
michael@0: #include "nsCSSKeywords.h"
michael@0: #include "CSSValue.h"
michael@0: #include "nsCOMPtr.h"
michael@0: #include "nsCoord.h"
michael@0: 
michael@0: class nsIURI;
michael@0: class nsDOMCSSRect;
michael@0: class nsDOMCSSRGBColor;
michael@0: 
michael@0: // There is no CSS_TURN constant on the CSSPrimitiveValue interface,
michael@0: // since that unit is newer than DOM Level 2 Style, and CSS OM will
michael@0: // probably expose CSS values in some other way in the future.  We
michael@0: // use this value in mType for "turn"-unit angles, but we define it
michael@0: // here to avoid exposing it to content.
michael@0: #define CSS_TURN 30U
michael@0: // Likewise we have some internal aliases for CSS_NUMBER that we don't
michael@0: // want to expose.
michael@0: #define CSS_NUMBER_INT32 31U
michael@0: #define CSS_NUMBER_UINT32 32U
michael@0: 
michael@0: /**
michael@0:  * Read-only CSS primitive value - a DOM object representing values in DOM
michael@0:  * computed style.
michael@0:  */
michael@0: class nsROCSSPrimitiveValue MOZ_FINAL : public mozilla::dom::CSSValue,
michael@0:   public nsIDOMCSSPrimitiveValue
michael@0: {
michael@0: public:
michael@0:   NS_DECL_CYCLE_COLLECTING_ISUPPORTS
michael@0:   NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_AMBIGUOUS(nsROCSSPrimitiveValue, mozilla::dom::CSSValue)
michael@0: 
michael@0:   // nsIDOMCSSPrimitiveValue
michael@0:   NS_DECL_NSIDOMCSSPRIMITIVEVALUE
michael@0: 
michael@0:   // nsIDOMCSSValue
michael@0:   NS_DECL_NSIDOMCSSVALUE
michael@0: 
michael@0:   // CSSValue
michael@0:   virtual void GetCssText(nsString& aText, mozilla::ErrorResult& aRv) MOZ_OVERRIDE MOZ_FINAL;
michael@0:   virtual void SetCssText(const nsAString& aText, mozilla::ErrorResult& aRv) MOZ_OVERRIDE MOZ_FINAL;
michael@0:   virtual uint16_t CssValueType() const MOZ_OVERRIDE MOZ_FINAL;
michael@0: 
michael@0:   // CSSPrimitiveValue
michael@0:   uint16_t PrimitiveType()
michael@0:   {
michael@0:     // New value types were introduced but not added to CSS OM.
michael@0:     // Return CSS_UNKNOWN to avoid exposing CSS_TURN to content.
michael@0:     if (mType > CSS_RGBCOLOR) {
michael@0:       if (mType == CSS_NUMBER_INT32 || mType == CSS_NUMBER_UINT32) {
michael@0:         return CSS_NUMBER;
michael@0:       }
michael@0:       return CSS_UNKNOWN;
michael@0:     }
michael@0:     return mType;
michael@0:   }
michael@0:   void SetFloatValue(uint16_t aUnitType, float aValue,
michael@0:                      mozilla::ErrorResult& aRv);
michael@0:   float GetFloatValue(uint16_t aUnitType, mozilla::ErrorResult& aRv);
michael@0:   void GetStringValue(nsString& aString, mozilla::ErrorResult& aRv);
michael@0:   void SetStringValue(uint16_t aUnitType, const nsAString& aString,
michael@0:                       mozilla::ErrorResult& aRv);
michael@0:   already_AddRefed<nsIDOMCounter> GetCounterValue(mozilla::ErrorResult& aRv);
michael@0:   nsDOMCSSRect* GetRectValue(mozilla::ErrorResult& aRv);
michael@0:   nsDOMCSSRGBColor *GetRGBColorValue(mozilla::ErrorResult& aRv);
michael@0: 
michael@0:   // nsROCSSPrimitiveValue
michael@0:   nsROCSSPrimitiveValue();
michael@0:   ~nsROCSSPrimitiveValue();
michael@0: 
michael@0:   void SetNumber(float aValue);
michael@0:   void SetNumber(int32_t aValue);
michael@0:   void SetNumber(uint32_t aValue);
michael@0:   void SetPercent(float aValue);
michael@0:   void SetDegree(float aValue);
michael@0:   void SetGrad(float aValue);
michael@0:   void SetRadian(float aValue);
michael@0:   void SetTurn(float aValue);
michael@0:   void SetAppUnits(nscoord aValue);
michael@0:   void SetAppUnits(float aValue);
michael@0:   void SetIdent(nsCSSKeyword aKeyword);
michael@0:   // FIXME: CSS_STRING should imply a string with "" and a need for escaping.
michael@0:   void SetString(const nsACString& aString, uint16_t aType = CSS_STRING);
michael@0:   // FIXME: CSS_STRING should imply a string with "" and a need for escaping.
michael@0:   void SetString(const nsAString& aString, uint16_t aType = CSS_STRING);
michael@0:   void SetURI(nsIURI *aURI);
michael@0:   void SetColor(nsDOMCSSRGBColor* aColor);
michael@0:   void SetRect(nsDOMCSSRect* aRect);
michael@0:   void SetTime(float aValue);
michael@0:   void Reset();
michael@0: 
michael@0:   nsISupports* GetParentObject() const
michael@0:   {
michael@0:     return nullptr;
michael@0:   }
michael@0: 
michael@0:   virtual JSObject *WrapObject(JSContext *cx) MOZ_OVERRIDE;
michael@0: 
michael@0: private:
michael@0:   uint16_t mType;
michael@0: 
michael@0:   union {
michael@0:     nscoord         mAppUnits;
michael@0:     float           mFloat;
michael@0:     int32_t         mInt32;
michael@0:     uint32_t        mUint32;
michael@0:     nsDOMCSSRGBColor* mColor;
michael@0:     nsDOMCSSRect*     mRect;
michael@0:     char16_t*      mString;
michael@0:     nsIURI*         mURI;
michael@0:     nsCSSKeyword    mKeyword;
michael@0:   } mValue;
michael@0: };
michael@0: 
michael@0: inline nsROCSSPrimitiveValue *mozilla::dom::CSSValue::AsPrimitiveValue()
michael@0: {
michael@0:   return CssValueType() == nsIDOMCSSValue::CSS_PRIMITIVE_VALUE ?
michael@0:     static_cast<nsROCSSPrimitiveValue*>(this) : nullptr;
michael@0: }
michael@0: 
michael@0: #endif /* nsROCSSPrimitiveValue_h___ */
michael@0: