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-rw-r--r--layout/style/nsROCSSPrimitiveValue.cpp217
1 files changed, 217 insertions, 0 deletions
diff --git a/layout/style/nsROCSSPrimitiveValue.cpp b/layout/style/nsROCSSPrimitiveValue.cpp
new file mode 100644
index 0000000000..c8e46d8aab
--- /dev/null
+++ b/layout/style/nsROCSSPrimitiveValue.cpp
@@ -0,0 +1,217 @@
+/* -*- 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/ErrorResult.h"
+#include "nsPresContext.h"
+#include "nsStyleUtil.h"
+#include "nsIURI.h"
+#include "nsError.h"
+
+using namespace mozilla;
+using namespace mozilla::dom;
+
+nsROCSSPrimitiveValue::nsROCSSPrimitiveValue() : CSSValue(), mType(CSS_PX) {
+ mValue.mFloat = 0.0f;
+}
+
+nsROCSSPrimitiveValue::~nsROCSSPrimitiveValue() { Reset(); }
+
+void nsROCSSPrimitiveValue::GetCssText(nsString& aCssText, ErrorResult& aRv) {
+ nsAutoString tmpStr;
+ aCssText.Truncate();
+
+ switch (mType) {
+ case CSS_PX: {
+ nsStyleUtil::AppendCSSNumber(mValue.mFloat, tmpStr);
+ tmpStr.AppendLiteral("px");
+ break;
+ }
+ case CSS_STRING: {
+ tmpStr.Append(mValue.mString);
+ break;
+ }
+ case CSS_URI: {
+ if (mValue.mURI) {
+ nsAutoCString specUTF8;
+ nsresult rv = mValue.mURI->GetSpec(specUTF8);
+ if (NS_FAILED(rv)) {
+ aRv.ThrowInvalidStateError("Can't get URL string for url()");
+ return;
+ }
+
+ 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_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_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");
+ aRv.ThrowInvalidAccessError("Unexpected value in computed style");
+ return;
+ }
+
+ aCssText.Assign(tmpStr);
+}
+
+uint16_t nsROCSSPrimitiveValue::CssValueType() const {
+ return CSSValue::CSS_PRIMITIVE_VALUE;
+}
+
+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::SetAppUnits(nscoord aValue) {
+ SetPixels(nsPresContext::AppUnitsToFloatCSSPixels(aValue));
+}
+
+void nsROCSSPrimitiveValue::SetPixels(float aValue) {
+ Reset();
+ mValue.mFloat = aValue;
+ mType = CSS_PX;
+}
+
+void nsROCSSPrimitiveValue::SetAppUnits(float aValue) {
+ SetAppUnits(NSToCoordRound(aValue));
+}
+
+void nsROCSSPrimitiveValue::SetString(const nsACString& aString) {
+ Reset();
+ mValue.mString = ToNewUnicode(aString, mozilla::fallible);
+ if (mValue.mString) {
+ mType = CSS_STRING;
+ } else {
+ // XXXcaa We should probably let the caller know we are out of memory
+ mType = CSS_UNKNOWN;
+ }
+}
+
+void nsROCSSPrimitiveValue::SetString(const nsAString& aString) {
+ Reset();
+ mValue.mString = ToNewUnicode(aString, mozilla::fallible);
+ if (mValue.mString) {
+ mType = CSS_STRING;
+ } 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::SetTime(float aValue) {
+ Reset();
+ mValue.mFloat = aValue;
+ mType = CSS_S;
+}
+
+void nsROCSSPrimitiveValue::Reset() {
+ switch (mType) {
+ case CSS_STRING:
+ 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;
+ }
+
+ mType = CSS_UNKNOWN;
+}
+
+uint16_t nsROCSSPrimitiveValue::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;
+}