1 files changed, 267 insertions, 0 deletions
diff --git a/dom/html/HTMLHRElement.cpp b/dom/html/HTMLHRElement.cpp
new file mode 100644
index 000000000..fb5dbe618
--- /dev/null
+++ b/dom/html/HTMLHRElement.cpp
@@ -0,0 +1,267 @@
+/* -*- 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/. */
+
+#include "mozilla/dom/HTMLHRElement.h"
+#include "mozilla/dom/HTMLHRElementBinding.h"
+
+NS_IMPL_NS_NEW_HTML_ELEMENT(HR)
+
+namespace mozilla {
+namespace dom {
+
+HTMLHRElement::HTMLHRElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
+  : nsGenericHTMLElement(aNodeInfo)
+{
+}
+
+HTMLHRElement::~HTMLHRElement()
+{
+}
+
+NS_IMPL_ISUPPORTS_INHERITED(HTMLHRElement, nsGenericHTMLElement,
+                            nsIDOMHTMLHRElement)
+
+NS_IMPL_ELEMENT_CLONE(HTMLHRElement)
+
+
+NS_IMPL_STRING_ATTR(HTMLHRElement, Align, align)
+NS_IMPL_BOOL_ATTR(HTMLHRElement, NoShade, noshade)
+NS_IMPL_STRING_ATTR(HTMLHRElement, Size, size)
+NS_IMPL_STRING_ATTR(HTMLHRElement, Width, width)
+NS_IMPL_STRING_ATTR(HTMLHRElement, Color, color)
+
+bool
+HTMLHRElement::ParseAttribute(int32_t aNamespaceID,
+                              nsIAtom* aAttribute,
+                              const nsAString& aValue,
+                              nsAttrValue& aResult)
+{
+  static const nsAttrValue::EnumTable kAlignTable[] = {
+    { "left", NS_STYLE_TEXT_ALIGN_LEFT },
+    { "right", NS_STYLE_TEXT_ALIGN_RIGHT },
+    { "center", NS_STYLE_TEXT_ALIGN_CENTER },
+    { nullptr, 0 }
+  };
+
+  if (aNamespaceID == kNameSpaceID_None) {
+    if (aAttribute == nsGkAtoms::width) {
+      return aResult.ParseSpecialIntValue(aValue);
+    }
+    if (aAttribute == nsGkAtoms::size) {
+      return aResult.ParseIntWithBounds(aValue, 1, 1000);
+    }
+    if (aAttribute == nsGkAtoms::align) {
+      return aResult.ParseEnumValue(aValue, kAlignTable, false);
+    }
+    if (aAttribute == nsGkAtoms::color) {
+      return aResult.ParseColor(aValue);
+    }
+  }
+
+  return nsGenericHTMLElement::ParseAttribute(aNamespaceID, aAttribute, aValue,
+                                              aResult);
+}
+
+void
+HTMLHRElement::MapAttributesIntoRule(const nsMappedAttributes* aAttributes,
+                                     nsRuleData* aData)
+{
+  bool noshade = false;
+
+  const nsAttrValue* colorValue = aAttributes->GetAttr(nsGkAtoms::color);
+  nscolor color;
+  bool colorIsSet = colorValue && colorValue->GetColorValue(color);
+
+  if (aData->mSIDs & (NS_STYLE_INHERIT_BIT(Position) |
+                      NS_STYLE_INHERIT_BIT(Border))) {
+    if (colorIsSet) {
+      noshade = true;
+    } else {
+      noshade = !!aAttributes->GetAttr(nsGkAtoms::noshade);
+    }
+  }
+
+  if (aData->mSIDs & NS_STYLE_INHERIT_BIT(Margin)) {
+    // align: enum
+    const nsAttrValue* value = aAttributes->GetAttr(nsGkAtoms::align);
+    if (value && value->Type() == nsAttrValue::eEnum) {
+      // Map align attribute into auto side margins
+      nsCSSValue* marginLeft = aData->ValueForMarginLeft();
+      nsCSSValue* marginRight = aData->ValueForMarginRight();
+      switch (value->GetEnumValue()) {
+      case NS_STYLE_TEXT_ALIGN_LEFT:
+        if (marginLeft->GetUnit() == eCSSUnit_Null)
+          marginLeft->SetFloatValue(0.0f, eCSSUnit_Pixel);
+        if (marginRight->GetUnit() == eCSSUnit_Null)
+          marginRight->SetAutoValue();
+        break;
+      case NS_STYLE_TEXT_ALIGN_RIGHT:
+        if (marginLeft->GetUnit() == eCSSUnit_Null)
+          marginLeft->SetAutoValue();
+        if (marginRight->GetUnit() == eCSSUnit_Null)
+          marginRight->SetFloatValue(0.0f, eCSSUnit_Pixel);
+        break;
+      case NS_STYLE_TEXT_ALIGN_CENTER:
+        if (marginLeft->GetUnit() == eCSSUnit_Null)
+          marginLeft->SetAutoValue();
+        if (marginRight->GetUnit() == eCSSUnit_Null)
+          marginRight->SetAutoValue();
+        break;
+      }
+    }
+  }
+  if (aData->mSIDs & NS_STYLE_INHERIT_BIT(Position)) {
+    // width: integer, percent
+    nsCSSValue* width = aData->ValueForWidth();
+    if (width->GetUnit() == eCSSUnit_Null) {
+      const nsAttrValue* value = aAttributes->GetAttr(nsGkAtoms::width);
+      if (value && value->Type() == nsAttrValue::eInteger) {
+        width->SetFloatValue((float)value->GetIntegerValue(), eCSSUnit_Pixel);
+      } else if (value && value->Type() == nsAttrValue::ePercent) {
+        width->SetPercentValue(value->GetPercentValue());
+      }
+    }
+
+    nsCSSValue* height = aData->ValueForHeight();
+    if (height->GetUnit() == eCSSUnit_Null) {
+      // size: integer
+      if (noshade) {
+        // noshade case: size is set using the border
+        height->SetAutoValue();
+      } else {
+        // normal case
+        // the height includes the top and bottom borders that are initially 1px.
+        // for size=1, html.css has a special case rule that makes this work by
+        // removing all but the top border.
+        const nsAttrValue* value = aAttributes->GetAttr(nsGkAtoms::size);
+        if (value && value->Type() == nsAttrValue::eInteger) {
+          height->SetFloatValue((float)value->GetIntegerValue(), eCSSUnit_Pixel);
+        } // else use default value from html.css
+      }
+    }
+  }
+  if ((aData->mSIDs & NS_STYLE_INHERIT_BIT(Border)) && noshade) { // if not noshade, border styles are dealt with by html.css
+    // size: integer
+    // if a size is set, use half of it per side, otherwise, use 1px per side
+    float sizePerSide;
+    bool allSides = true;
+    const nsAttrValue* value = aAttributes->GetAttr(nsGkAtoms::size);
+    if (value && value->Type() == nsAttrValue::eInteger) {
+      sizePerSide = (float)value->GetIntegerValue() / 2.0f;
+      if (sizePerSide < 1.0f) {
+        // XXX When the pixel bug is fixed, all the special casing for
+        // subpixel borders should be removed.
+        // In the meantime, this makes http://www.microsoft.com/ look right.
+        sizePerSide = 1.0f;
+        allSides = false;
+      }
+    } else {
+      sizePerSide = 1.0f; // default to a 2px high line
+    }
+    nsCSSValue* borderTopWidth = aData->ValueForBorderTopWidth();
+    if (borderTopWidth->GetUnit() == eCSSUnit_Null) {
+      borderTopWidth->SetFloatValue(sizePerSide, eCSSUnit_Pixel);
+    }
+    if (allSides) {
+      nsCSSValue* borderRightWidth = aData->ValueForBorderRightWidth();
+      if (borderRightWidth->GetUnit() == eCSSUnit_Null) {
+        borderRightWidth->SetFloatValue(sizePerSide, eCSSUnit_Pixel);
+      }
+      nsCSSValue* borderBottomWidth = aData->ValueForBorderBottomWidth();
+      if (borderBottomWidth->GetUnit() == eCSSUnit_Null) {
+        borderBottomWidth->SetFloatValue(sizePerSide, eCSSUnit_Pixel);
+      }
+      nsCSSValue* borderLeftWidth = aData->ValueForBorderLeftWidth();
+      if (borderLeftWidth->GetUnit() == eCSSUnit_Null) {
+        borderLeftWidth->SetFloatValue(sizePerSide, eCSSUnit_Pixel);
+      }
+    }
+
+    nsCSSValue* borderTopStyle = aData->ValueForBorderTopStyle();
+    if (borderTopStyle->GetUnit() == eCSSUnit_Null) {
+      borderTopStyle->SetIntValue(NS_STYLE_BORDER_STYLE_SOLID,
+                                  eCSSUnit_Enumerated);
+    }
+    if (allSides) {
+      nsCSSValue* borderRightStyle = aData->ValueForBorderRightStyle();
+      if (borderRightStyle->GetUnit() == eCSSUnit_Null) {
+        borderRightStyle->SetIntValue(NS_STYLE_BORDER_STYLE_SOLID,
+                                      eCSSUnit_Enumerated);
+      }
+      nsCSSValue* borderBottomStyle = aData->ValueForBorderBottomStyle();
+      if (borderBottomStyle->GetUnit() == eCSSUnit_Null) {
+        borderBottomStyle->SetIntValue(NS_STYLE_BORDER_STYLE_SOLID,
+                                       eCSSUnit_Enumerated);
+      }
+      nsCSSValue* borderLeftStyle = aData->ValueForBorderLeftStyle();
+      if (borderLeftStyle->GetUnit() == eCSSUnit_Null) {
+        borderLeftStyle->SetIntValue(NS_STYLE_BORDER_STYLE_SOLID,
+                                     eCSSUnit_Enumerated);
+      }
+
+      // If it would be noticeable, set the border radius to
+      // 10000px on all corners; this triggers the clamping to make
+      // circular ends.  This assumes the <hr> isn't larger than
+      // that in *both* dimensions.
+      for (const nsCSSPropertyID* props =
+            nsCSSProps::SubpropertyEntryFor(eCSSProperty_border_radius);
+           *props != eCSSProperty_UNKNOWN; ++props) {
+        nsCSSValue* dimen = aData->ValueFor(*props);
+        if (dimen->GetUnit() == eCSSUnit_Null) {
+          dimen->SetFloatValue(10000.0f, eCSSUnit_Pixel);
+        }
+      }
+    }
+  }
+  if (aData->mSIDs & NS_STYLE_INHERIT_BIT(Color)) {
+    // color: a color
+    // (we got the color attribute earlier)
+    nsCSSValue* colorValue = aData->ValueForColor();
+    if (colorIsSet &&
+        colorValue->GetUnit() == eCSSUnit_Null &&
+        aData->mPresContext->UseDocumentColors()) {
+      colorValue->SetColorValue(color);
+    }
+  }
+
+  nsGenericHTMLElement::MapCommonAttributesInto(aAttributes, aData);
+}
+
+NS_IMETHODIMP_(bool)
+HTMLHRElement::IsAttributeMapped(const nsIAtom* aAttribute) const
+{
+  static const MappedAttributeEntry attributes[] = {
+    { &nsGkAtoms::align },
+    { &nsGkAtoms::width },
+    { &nsGkAtoms::size },
+    { &nsGkAtoms::color },
+    { &nsGkAtoms::noshade },
+    { nullptr },
+  };
+  
+  static const MappedAttributeEntry* const map[] = {
+    attributes,
+    sCommonAttributeMap,
+  };
+
+  return FindAttributeDependence(aAttribute, map);
+}
+
+
+nsMapRuleToAttributesFunc
+HTMLHRElement::GetAttributeMappingFunction() const
+{
+  return &MapAttributesIntoRule;
+}
+
+JSObject*
+HTMLHRElement::WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
+{
+  return HTMLHRElementBinding::Wrap(aCx, this, aGivenProto);
+}
+
+} // namespace dom
+} // namespace mozilla