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1 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 : /* This Source Code Form is subject to the terms of the Mozilla Public
3 : * License, v. 2.0. If a copy of the MPL was not distributed with this
4 : * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
5 :
6 : /* DOM object representing values in DOM computed style */
7 :
8 : #ifndef nsROCSSPrimitiveValue_h___
9 : #define nsROCSSPrimitiveValue_h___
10 :
11 : #include "nsIDOMCSSValue.h"
12 : #include "nsIDOMCSSPrimitiveValue.h"
13 : #include "nsCSSKeywords.h"
14 : #include "CSSValue.h"
15 : #include "nsCOMPtr.h"
16 : #include "nsCoord.h"
17 :
18 : class nsIURI;
19 : class nsDOMCSSRect;
20 : class nsDOMCSSRGBColor;
21 :
22 : // There is no CSS_TURN constant on the CSSPrimitiveValue interface,
23 : // since that unit is newer than DOM Level 2 Style, and CSS OM will
24 : // probably expose CSS values in some other way in the future. We
25 : // use this value in mType for "turn"-unit angles, but we define it
26 : // here to avoid exposing it to content.
27 : #define CSS_TURN 30U
28 : // Likewise we have some internal aliases for CSS_NUMBER that we don't
29 : // want to expose.
30 : #define CSS_NUMBER_INT32 31U
31 : #define CSS_NUMBER_UINT32 32U
32 :
33 : /**
34 : * Read-only CSS primitive value - a DOM object representing values in DOM
35 : * computed style.
36 : */
37 : class nsROCSSPrimitiveValue final : public mozilla::dom::CSSValue,
38 : public nsIDOMCSSPrimitiveValue
39 : {
40 : public:
41 : NS_DECL_CYCLE_COLLECTING_ISUPPORTS
42 80 : NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_AMBIGUOUS(nsROCSSPrimitiveValue, mozilla::dom::CSSValue)
43 :
44 : // nsIDOMCSSPrimitiveValue
45 : NS_DECL_NSIDOMCSSPRIMITIVEVALUE
46 :
47 : // nsIDOMCSSValue
48 : NS_DECL_NSIDOMCSSVALUE
49 :
50 : // CSSValue
51 : virtual void GetCssText(nsString& aText, mozilla::ErrorResult& aRv) override final;
52 : virtual void SetCssText(const nsAString& aText, mozilla::ErrorResult& aRv) override final;
53 : virtual uint16_t CssValueType() const override final;
54 :
55 : // CSSPrimitiveValue
56 0 : uint16_t PrimitiveType()
57 : {
58 : // New value types were introduced but not added to CSS OM.
59 : // Return CSS_UNKNOWN to avoid exposing CSS_TURN to content.
60 0 : if (mType > CSS_RGBCOLOR) {
61 0 : if (mType == CSS_NUMBER_INT32 || mType == CSS_NUMBER_UINT32) {
62 0 : return CSS_NUMBER;
63 : }
64 0 : return CSS_UNKNOWN;
65 : }
66 0 : return mType;
67 : }
68 : void SetFloatValue(uint16_t aUnitType, float aValue,
69 : mozilla::ErrorResult& aRv);
70 : float GetFloatValue(uint16_t aUnitType, mozilla::ErrorResult& aRv);
71 : void GetStringValue(nsString& aString, mozilla::ErrorResult& aRv);
72 : void SetStringValue(uint16_t aUnitType, const nsAString& aString,
73 : mozilla::ErrorResult& aRv);
74 : already_AddRefed<nsIDOMCounter> GetCounterValue(mozilla::ErrorResult& aRv);
75 : nsDOMCSSRect* GetRectValue(mozilla::ErrorResult& aRv);
76 : nsDOMCSSRGBColor *GetRGBColorValue(mozilla::ErrorResult& aRv);
77 :
78 : // nsROCSSPrimitiveValue
79 : nsROCSSPrimitiveValue();
80 :
81 : void SetNumber(float aValue);
82 : void SetNumber(int32_t aValue);
83 : void SetNumber(uint32_t aValue);
84 : void SetPercent(float aValue);
85 : void SetDegree(float aValue);
86 : void SetGrad(float aValue);
87 : void SetRadian(float aValue);
88 : void SetTurn(float aValue);
89 : void SetAppUnits(nscoord aValue);
90 : void SetAppUnits(float aValue);
91 : void SetIdent(nsCSSKeyword aKeyword);
92 : // FIXME: CSS_STRING should imply a string with "" and a need for escaping.
93 : void SetString(const nsACString& aString, uint16_t aType = CSS_STRING);
94 : // FIXME: CSS_STRING should imply a string with "" and a need for escaping.
95 : void SetString(const nsAString& aString, uint16_t aType = CSS_STRING);
96 : void SetURI(nsIURI *aURI);
97 : void SetColor(nsDOMCSSRGBColor* aColor);
98 : void SetRect(nsDOMCSSRect* aRect);
99 : void SetTime(float aValue);
100 : void Reset();
101 :
102 0 : nsISupports* GetParentObject() const
103 : {
104 0 : return nullptr;
105 : }
106 :
107 : virtual JSObject *WrapObject(JSContext *cx, JS::Handle<JSObject*> aGivenProto) override;
108 :
109 : private:
110 : ~nsROCSSPrimitiveValue();
111 :
112 : uint16_t mType;
113 :
114 : union {
115 : nscoord mAppUnits;
116 : float mFloat;
117 : int32_t mInt32;
118 : uint32_t mUint32;
119 : // These can't be nsCOMPtr/nsRefPtr's because they are used inside a union.
120 : nsDOMCSSRGBColor* MOZ_OWNING_REF mColor;
121 : nsDOMCSSRect* MOZ_OWNING_REF mRect;
122 : char16_t* mString;
123 : nsIURI* MOZ_OWNING_REF mURI;
124 : nsCSSKeyword mKeyword;
125 : } mValue;
126 : };
127 :
128 0 : inline nsROCSSPrimitiveValue *mozilla::dom::CSSValue::AsPrimitiveValue()
129 : {
130 0 : return CssValueType() == nsIDOMCSSValue::CSS_PRIMITIVE_VALUE ?
131 0 : static_cast<nsROCSSPrimitiveValue*>(this) : nullptr;
132 : }
133 :
134 : #endif /* nsROCSSPrimitiveValue_h___ */
135 :
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