diff options
Diffstat (limited to 'layout/style/nsROCSSPrimitiveValue.cpp')
| -rw-r--r-- | layout/style/nsROCSSPrimitiveValue.cpp | 722 |
1 files changed, 722 insertions, 0 deletions
diff --git a/layout/style/nsROCSSPrimitiveValue.cpp b/layout/style/nsROCSSPrimitiveValue.cpp new file mode 100644 index 000000000..cbc715eb2 --- /dev/null +++ b/layout/style/nsROCSSPrimitiveValue.cpp @@ -0,0 +1,722 @@ +/* -*- 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 */ + +#include "nsROCSSPrimitiveValue.h" + +#include "mozilla/dom/CSSPrimitiveValueBinding.h" +#include "nsPresContext.h" +#include "nsStyleUtil.h" +#include "nsDOMCSSRGBColor.h" +#include "nsDOMCSSRect.h" +#include "nsIURI.h" +#include "nsError.h" + +using namespace mozilla; + +nsROCSSPrimitiveValue::nsROCSSPrimitiveValue() + : CSSValue(), mType(CSS_PX) +{ + mValue.mAppUnits = 0; +} + + +nsROCSSPrimitiveValue::~nsROCSSPrimitiveValue() +{ + Reset(); +} + +NS_IMPL_CYCLE_COLLECTING_ADDREF(nsROCSSPrimitiveValue) +NS_IMPL_CYCLE_COLLECTING_RELEASE(nsROCSSPrimitiveValue) + +NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsROCSSPrimitiveValue) + NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY + NS_INTERFACE_MAP_ENTRY(nsIDOMCSSPrimitiveValue) + NS_INTERFACE_MAP_ENTRY(nsIDOMCSSValue) + NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, CSSValue) +NS_INTERFACE_MAP_END + +NS_IMPL_CYCLE_COLLECTION_CLASS(nsROCSSPrimitiveValue) + +NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(nsROCSSPrimitiveValue) + +NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsROCSSPrimitiveValue) + if (tmp->mType == CSS_URI) { + NS_IMPL_CYCLE_COLLECTION_TRAVERSE_RAWPTR(mValue.mURI) + } else if (tmp->mType == CSS_RGBCOLOR) { + NS_IMPL_CYCLE_COLLECTION_TRAVERSE_RAWPTR(mValue.mColor) + } else if (tmp->mType == CSS_RECT) { + NS_IMPL_CYCLE_COLLECTION_TRAVERSE_RAWPTR(mValue.mRect) + } + NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS +NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END + +NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsROCSSPrimitiveValue) + NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER + tmp->Reset(); +NS_IMPL_CYCLE_COLLECTION_UNLINK_END + +JSObject* +nsROCSSPrimitiveValue::WrapObject(JSContext *cx, JS::Handle<JSObject*> aGivenProto) +{ + return dom::CSSPrimitiveValueBinding::Wrap(cx, this, aGivenProto); +} + +// nsIDOMCSSValue + + +NS_IMETHODIMP +nsROCSSPrimitiveValue::GetCssText(nsAString& aCssText) +{ + nsAutoString tmpStr; + aCssText.Truncate(); + nsresult result = NS_OK; + + switch (mType) { + case CSS_PX : + { + float val = nsPresContext::AppUnitsToFloatCSSPixels(mValue.mAppUnits); + nsStyleUtil::AppendCSSNumber(val, tmpStr); + tmpStr.AppendLiteral("px"); + break; + } + case CSS_IDENT : + { + AppendUTF8toUTF16(nsCSSKeywords::GetStringValue(mValue.mKeyword), + tmpStr); + break; + } + case CSS_STRING : + case CSS_COUNTER : /* FIXME: COUNTER should use an object */ + { + tmpStr.Append(mValue.mString); + break; + } + case CSS_URI : + { + if (mValue.mURI) { + nsAutoCString specUTF8; + nsresult rv = mValue.mURI->GetSpec(specUTF8); + NS_ENSURE_SUCCESS(rv, rv); + + tmpStr.AssignLiteral("url("); + nsStyleUtil::AppendEscapedCSSString(NS_ConvertUTF8toUTF16(specUTF8), + tmpStr); + tmpStr.Append(')'); + } else { + // http://dev.w3.org/csswg/css3-values/#attr defines + // 'about:invalid' as the default value for url attributes, + // so let's also use it here as the default computed value + // for invalid URLs. + tmpStr.AssignLiteral(u"url(about:invalid)"); + } + break; + } + case CSS_ATTR : + { + tmpStr.AppendLiteral("attr("); + tmpStr.Append(mValue.mString); + tmpStr.Append(char16_t(')')); + break; + } + case CSS_PERCENTAGE : + { + nsStyleUtil::AppendCSSNumber(mValue.mFloat * 100, tmpStr); + tmpStr.Append(char16_t('%')); + break; + } + case CSS_NUMBER : + { + nsStyleUtil::AppendCSSNumber(mValue.mFloat, tmpStr); + break; + } + case CSS_NUMBER_INT32 : + { + tmpStr.AppendInt(mValue.mInt32); + break; + } + case CSS_NUMBER_UINT32 : + { + tmpStr.AppendInt(mValue.mUint32); + break; + } + case CSS_DEG : + { + nsStyleUtil::AppendCSSNumber(mValue.mFloat, tmpStr); + tmpStr.AppendLiteral("deg"); + break; + } + case CSS_GRAD : + { + nsStyleUtil::AppendCSSNumber(mValue.mFloat, tmpStr); + tmpStr.AppendLiteral("grad"); + break; + } + case CSS_RAD : + { + nsStyleUtil::AppendCSSNumber(mValue.mFloat, tmpStr); + tmpStr.AppendLiteral("rad"); + break; + } + case CSS_TURN : + { + nsStyleUtil::AppendCSSNumber(mValue.mFloat, tmpStr); + tmpStr.AppendLiteral("turn"); + break; + } + case CSS_RECT : + { + NS_ASSERTION(mValue.mRect, "mValue.mRect should never be null"); + NS_NAMED_LITERAL_STRING(comma, ", "); + nsCOMPtr<nsIDOMCSSPrimitiveValue> sideCSSValue; + nsAutoString sideValue; + tmpStr.AssignLiteral("rect("); + // get the top + result = mValue.mRect->GetTop(getter_AddRefs(sideCSSValue)); + if (NS_FAILED(result)) + break; + result = sideCSSValue->GetCssText(sideValue); + if (NS_FAILED(result)) + break; + tmpStr.Append(sideValue + comma); + // get the right + result = mValue.mRect->GetRight(getter_AddRefs(sideCSSValue)); + if (NS_FAILED(result)) + break; + result = sideCSSValue->GetCssText(sideValue); + if (NS_FAILED(result)) + break; + tmpStr.Append(sideValue + comma); + // get the bottom + result = mValue.mRect->GetBottom(getter_AddRefs(sideCSSValue)); + if (NS_FAILED(result)) + break; + result = sideCSSValue->GetCssText(sideValue); + if (NS_FAILED(result)) + break; + tmpStr.Append(sideValue + comma); + // get the left + result = mValue.mRect->GetLeft(getter_AddRefs(sideCSSValue)); + if (NS_FAILED(result)) + break; + result = sideCSSValue->GetCssText(sideValue); + if (NS_FAILED(result)) + break; + tmpStr.Append(sideValue + NS_LITERAL_STRING(")")); + break; + } + case CSS_RGBCOLOR : + { + NS_ASSERTION(mValue.mColor, "mValue.mColor should never be null"); + ErrorResult error; + NS_NAMED_LITERAL_STRING(comma, ", "); + nsAutoString colorValue; + if (mValue.mColor->HasAlpha()) + tmpStr.AssignLiteral("rgba("); + else + tmpStr.AssignLiteral("rgb("); + + // get the red component + mValue.mColor->Red()->GetCssText(colorValue, error); + if (error.Failed()) + break; + tmpStr.Append(colorValue + comma); + + // get the green component + mValue.mColor->Green()->GetCssText(colorValue, error); + if (error.Failed()) + break; + tmpStr.Append(colorValue + comma); + + // get the blue component + mValue.mColor->Blue()->GetCssText(colorValue, error); + if (error.Failed()) + break; + tmpStr.Append(colorValue); + + if (mValue.mColor->HasAlpha()) { + // get the alpha component + mValue.mColor->Alpha()->GetCssText(colorValue, error); + if (error.Failed()) + break; + tmpStr.Append(comma + colorValue); + } + + tmpStr.Append(')'); + + break; + } + case CSS_S : + { + nsStyleUtil::AppendCSSNumber(mValue.mFloat, tmpStr); + tmpStr.Append('s'); + break; + } + case CSS_CM : + case CSS_MM : + case CSS_IN : + case CSS_PT : + case CSS_PC : + case CSS_UNKNOWN : + case CSS_EMS : + case CSS_EXS : + case CSS_MS : + case CSS_HZ : + case CSS_KHZ : + case CSS_DIMENSION : + NS_ERROR("We have a bogus value set. This should not happen"); + return NS_ERROR_DOM_INVALID_ACCESS_ERR; + } + + if (NS_SUCCEEDED(result)) { + aCssText.Assign(tmpStr); + } + + return NS_OK; +} + +void +nsROCSSPrimitiveValue::GetCssText(nsString& aText, ErrorResult& aRv) +{ + aRv = GetCssText(aText); +} + +NS_IMETHODIMP +nsROCSSPrimitiveValue::SetCssText(const nsAString& aCssText) +{ + return NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR; +} + +void +nsROCSSPrimitiveValue::SetCssText(const nsAString& aText, ErrorResult& aRv) +{ + aRv = SetCssText(aText); +} + + +NS_IMETHODIMP +nsROCSSPrimitiveValue::GetCssValueType(uint16_t* aValueType) +{ + NS_ENSURE_ARG_POINTER(aValueType); + *aValueType = nsIDOMCSSValue::CSS_PRIMITIVE_VALUE; + return NS_OK; +} + +uint16_t +nsROCSSPrimitiveValue::CssValueType() const +{ + return nsIDOMCSSValue::CSS_PRIMITIVE_VALUE; +} + + +// nsIDOMCSSPrimitiveValue + +NS_IMETHODIMP +nsROCSSPrimitiveValue::GetPrimitiveType(uint16_t* aPrimitiveType) +{ + NS_ENSURE_ARG_POINTER(aPrimitiveType); + *aPrimitiveType = PrimitiveType(); + + return NS_OK; +} + + +NS_IMETHODIMP +nsROCSSPrimitiveValue::SetFloatValue(uint16_t aUnitType, float aFloatValue) +{ + return NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR; +} + +void +nsROCSSPrimitiveValue::SetFloatValue(uint16_t aType, float aVal, + ErrorResult& aRv) +{ + aRv = SetFloatValue(aType, aVal); +} + +float +nsROCSSPrimitiveValue::GetFloatValue(uint16_t aUnitType, ErrorResult& aRv) +{ + switch(aUnitType) { + case CSS_PX : + if (mType == CSS_PX) { + return nsPresContext::AppUnitsToFloatCSSPixels(mValue.mAppUnits); + } + + break; + case CSS_CM : + if (mType == CSS_PX) { + return mValue.mAppUnits * CM_PER_INCH_FLOAT / + nsPresContext::AppUnitsPerCSSInch(); + } + + break; + case CSS_MM : + if (mType == CSS_PX) { + return mValue.mAppUnits * MM_PER_INCH_FLOAT / + nsPresContext::AppUnitsPerCSSInch(); + } + + break; + case CSS_IN : + if (mType == CSS_PX) { + return mValue.mAppUnits / nsPresContext::AppUnitsPerCSSInch(); + } + + break; + case CSS_PT : + if (mType == CSS_PX) { + return mValue.mAppUnits * POINTS_PER_INCH_FLOAT / + nsPresContext::AppUnitsPerCSSInch(); + } + + break; + case CSS_PC : + if (mType == CSS_PX) { + return mValue.mAppUnits * 6.0f / + nsPresContext::AppUnitsPerCSSInch(); + } + + break; + case CSS_PERCENTAGE : + if (mType == CSS_PERCENTAGE) { + return mValue.mFloat * 100; + } + + break; + case CSS_NUMBER : + if (mType == CSS_NUMBER) { + return mValue.mFloat; + } + if (mType == CSS_NUMBER_INT32) { + return mValue.mInt32; + } + if (mType == CSS_NUMBER_UINT32) { + return mValue.mUint32; + } + + break; + case CSS_UNKNOWN : + case CSS_EMS : + case CSS_EXS : + case CSS_DEG : + case CSS_RAD : + case CSS_GRAD : + case CSS_MS : + case CSS_S : + case CSS_HZ : + case CSS_KHZ : + case CSS_DIMENSION : + case CSS_STRING : + case CSS_URI : + case CSS_IDENT : + case CSS_ATTR : + case CSS_COUNTER : + case CSS_RECT : + case CSS_RGBCOLOR : + break; + } + + aRv.Throw(NS_ERROR_DOM_INVALID_ACCESS_ERR); + return 0; +} + +NS_IMETHODIMP +nsROCSSPrimitiveValue::GetFloatValue(uint16_t aType, float *aVal) +{ + ErrorResult rv; + *aVal = GetFloatValue(aType, rv); + return rv.StealNSResult(); +} + + +NS_IMETHODIMP +nsROCSSPrimitiveValue::SetStringValue(uint16_t aStringType, + const nsAString& aStringValue) +{ + return NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR; +} + +void +nsROCSSPrimitiveValue::SetStringValue(uint16_t aType, const nsAString& aString, + mozilla::ErrorResult& aRv) +{ + aRv.Throw(NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR); +} + + +NS_IMETHODIMP +nsROCSSPrimitiveValue::GetStringValue(nsAString& aReturn) +{ + switch (mType) { + case CSS_IDENT: + CopyUTF8toUTF16(nsCSSKeywords::GetStringValue(mValue.mKeyword), aReturn); + break; + case CSS_STRING: + case CSS_ATTR: + aReturn.Assign(mValue.mString); + break; + case CSS_URI: { + nsAutoCString spec; + if (mValue.mURI) { + nsresult rv = mValue.mURI->GetSpec(spec); + NS_ENSURE_SUCCESS(rv, rv); + } + CopyUTF8toUTF16(spec, aReturn); + break; + } + default: + aReturn.Truncate(); + return NS_ERROR_DOM_INVALID_ACCESS_ERR; + } + return NS_OK; +} + +void +nsROCSSPrimitiveValue::GetStringValue(nsString& aString, ErrorResult& aRv) +{ + aRv = GetStringValue(aString); +} + + +NS_IMETHODIMP +nsROCSSPrimitiveValue::GetCounterValue(nsIDOMCounter** aReturn) +{ + return NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR; +} + +already_AddRefed<nsIDOMCounter> +nsROCSSPrimitiveValue::GetCounterValue(ErrorResult& aRv) +{ + aRv.Throw(NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR); + return nullptr; +} + +nsDOMCSSRect* +nsROCSSPrimitiveValue::GetRectValue(ErrorResult& aRv) +{ + if (mType != CSS_RECT) { + aRv.Throw(NS_ERROR_DOM_INVALID_ACCESS_ERR); + return nullptr; + } + + NS_ASSERTION(mValue.mRect, "mValue.mRect should never be null"); + return mValue.mRect; +} + +NS_IMETHODIMP +nsROCSSPrimitiveValue::GetRectValue(nsIDOMRect** aRect) +{ + ErrorResult error; + NS_IF_ADDREF(*aRect = GetRectValue(error)); + return error.StealNSResult(); +} + +nsDOMCSSRGBColor* +nsROCSSPrimitiveValue::GetRGBColorValue(ErrorResult& aRv) +{ + if (mType != CSS_RGBCOLOR) { + aRv.Throw(NS_ERROR_DOM_INVALID_ACCESS_ERR); + return nullptr; + } + + NS_ASSERTION(mValue.mColor, "mValue.mColor should never be null"); + return mValue.mColor; +} + +void +nsROCSSPrimitiveValue::SetNumber(float aValue) +{ + Reset(); + mValue.mFloat = aValue; + mType = CSS_NUMBER; +} + +void +nsROCSSPrimitiveValue::SetNumber(int32_t aValue) +{ + Reset(); + mValue.mInt32 = aValue; + mType = CSS_NUMBER_INT32; +} + +void +nsROCSSPrimitiveValue::SetNumber(uint32_t aValue) +{ + Reset(); + mValue.mUint32 = aValue; + mType = CSS_NUMBER_UINT32; +} + +void +nsROCSSPrimitiveValue::SetPercent(float aValue) +{ + Reset(); + mValue.mFloat = aValue; + mType = CSS_PERCENTAGE; +} + +void +nsROCSSPrimitiveValue::SetDegree(float aValue) +{ + Reset(); + mValue.mFloat = aValue; + mType = CSS_DEG; +} + +void +nsROCSSPrimitiveValue::SetGrad(float aValue) +{ + Reset(); + mValue.mFloat = aValue; + mType = CSS_GRAD; +} + +void +nsROCSSPrimitiveValue::SetRadian(float aValue) +{ + Reset(); + mValue.mFloat = aValue; + mType = CSS_RAD; +} + +void +nsROCSSPrimitiveValue::SetTurn(float aValue) +{ + Reset(); + mValue.mFloat = aValue; + mType = CSS_TURN; +} + +void +nsROCSSPrimitiveValue::SetAppUnits(nscoord aValue) +{ + Reset(); + mValue.mAppUnits = aValue; + mType = CSS_PX; +} + +void +nsROCSSPrimitiveValue::SetAppUnits(float aValue) +{ + SetAppUnits(NSToCoordRound(aValue)); +} + +void +nsROCSSPrimitiveValue::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 +nsROCSSPrimitiveValue::SetString(const nsACString& aString, uint16_t aType) +{ + 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 +nsROCSSPrimitiveValue::SetString(const nsAString& aString, uint16_t aType) +{ + 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 +nsROCSSPrimitiveValue::SetURI(nsIURI *aURI) +{ + Reset(); + mValue.mURI = aURI; + NS_IF_ADDREF(mValue.mURI); + mType = CSS_URI; +} + +void +nsROCSSPrimitiveValue::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 +nsROCSSPrimitiveValue::SetRect(nsDOMCSSRect* 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 +nsROCSSPrimitiveValue::SetTime(float aValue) +{ + Reset(); + mValue.mFloat = aValue; + mType = CSS_S; +} + +void +nsROCSSPrimitiveValue::Reset() +{ + 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"); + free(mValue.mString); + mValue.mString = nullptr; + 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; + } + + mType = CSS_UNKNOWN; +} |