gecko-dev/layout/style/nsROCSSPrimitiveValue.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
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* Portions created by the Initial Developer are Copyright (C) 1998
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*
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/* DOM object representing values in DOM computed style */
#ifndef nsROCSSPrimitiveValue_h___
#define nsROCSSPrimitiveValue_h___
#include "nsIDOMCSSPrimitiveValue.h"
#include "nsString.h"
#include "nsCoord.h"
#include "nsReadableUtils.h"
#include "nsIURI.h"
#include "nsIAtom.h"
#include "nsCSSKeywords.h"
#include "nsCOMPtr.h"
#include "nsDOMError.h"
#include "nsDOMCSSRect.h"
#include "nsDOMCSSRGBColor.h"
class nsROCSSPrimitiveValue : public nsIDOMCSSPrimitiveValue
{
public:
NS_DECL_ISUPPORTS
// nsIDOMCSSPrimitiveValue
NS_DECL_NSIDOMCSSPRIMITIVEVALUE
// nsIDOMCSSValue
NS_DECL_NSIDOMCSSVALUE
// nsROCSSPrimitiveValue
nsROCSSPrimitiveValue(PRInt32 aAppUnitsPerInch);
virtual ~nsROCSSPrimitiveValue();
// FIXME Many of these methods should be out-of-line.
void SetNumber(float aValue)
{
Reset();
mValue.mFloat = aValue;
mType = CSS_NUMBER;
}
void SetNumber(PRInt32 aValue)
{
Reset();
mValue.mFloat = float(aValue);
mType = CSS_NUMBER;
}
void SetNumber(PRUint32 aValue)
{
Reset();
mValue.mFloat = float(aValue);
mType = CSS_NUMBER;
}
void SetPercent(float aValue)
{
Reset();
mValue.mFloat = aValue;
mType = CSS_PERCENTAGE;
}
void SetAppUnits(nscoord aValue)
{
Reset();
mValue.mAppUnits = aValue;
mType = CSS_PX;
}
void SetAppUnits(float aValue)
{
SetAppUnits(NSToCoordRound(aValue));
}
void SetIdent(nsCSSKeyword aKeyword)
{
NS_PRECONDITION(aKeyword != eCSSKeyword_UNKNOWN &&
0 <= aKeyword && aKeyword < eCSSKeyword_COUNT,
"bad keyword");
Reset();
mValue.mKeyword = aKeyword;
mType = CSS_IDENT;
}
// FIXME: CSS_STRING should imply a string with "" and a need for escaping.
void SetString(const nsACString& aString, PRUint16 aType = CSS_STRING)
{
Reset();
mValue.mString = ToNewUnicode(aString);
if (mValue.mString) {
mType = aType;
} else {
// XXXcaa We should probably let the caller know we are out of memory
mType = CSS_UNKNOWN;
}
}
// FIXME: CSS_STRING should imply a string with "" and a need for escaping.
void SetString(const nsAString& aString, PRUint16 aType = CSS_STRING)
{
Reset();
mValue.mString = ToNewUnicode(aString);
if (mValue.mString) {
mType = aType;
} else {
// XXXcaa We should probably let the caller know we are out of memory
mType = CSS_UNKNOWN;
}
}
void SetURI(nsIURI *aURI)
{
Reset();
mValue.mURI = aURI;
NS_IF_ADDREF(mValue.mURI);
mType = CSS_URI;
}
void SetColor(nsDOMCSSRGBColor* aColor)
{
NS_PRECONDITION(aColor, "Null RGBColor being set!");
Reset();
mValue.mColor = aColor;
if (mValue.mColor) {
NS_ADDREF(mValue.mColor);
mType = CSS_RGBCOLOR;
}
else {
mType = CSS_UNKNOWN;
}
}
void SetRect(nsIDOMRect* aRect)
{
NS_PRECONDITION(aRect, "Null rect being set!");
Reset();
mValue.mRect = aRect;
if (mValue.mRect) {
NS_ADDREF(mValue.mRect);
mType = CSS_RECT;
}
else {
mType = CSS_UNKNOWN;
}
}
void SetTime(float aValue)
{
Reset();
mValue.mFloat = aValue;
mType = CSS_S;
}
void Reset(void)
{
switch (mType) {
case CSS_IDENT:
break;
case CSS_STRING:
case CSS_ATTR:
case CSS_COUNTER: // FIXME: Counter should use an object
NS_ASSERTION(mValue.mString, "Null string should never happen");
nsMemory::Free(mValue.mString);
mValue.mString = nsnull;
break;
case CSS_URI:
NS_IF_RELEASE(mValue.mURI);
break;
case CSS_RECT:
NS_ASSERTION(mValue.mRect, "Null Rect should never happen");
NS_RELEASE(mValue.mRect);
break;
case CSS_RGBCOLOR:
NS_ASSERTION(mValue.mColor, "Null RGBColor should never happen");
NS_RELEASE(mValue.mColor);
break;
}
}
private:
PRUint16 mType;
union {
nscoord mAppUnits;
float mFloat;
nsDOMCSSRGBColor* mColor;
nsIDOMRect* mRect;
PRUnichar* mString;
nsIURI* mURI;
nsCSSKeyword mKeyword;
} mValue;
PRInt32 mAppUnitsPerInch;
};
#endif /* nsROCSSPrimitiveValue_h___ */