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       1             : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* vim: set ts=8 sts=2 et sw=2 tw=80: */
       3             : /* This Source Code Form is subject to the terms of the Mozilla Public
       4             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       5             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       6             : 
       7             : #ifndef nsMathMLElement_h
       8             : #define nsMathMLElement_h
       9             : 
      10             : #include "mozilla/Attributes.h"
      11             : #include "mozilla/dom/Element.h"
      12             : #include "nsMappedAttributeElement.h"
      13             : #include "nsIDOMElement.h"
      14             : #include "Link.h"
      15             : #include "mozilla/dom/DOMRect.h"
      16             : 
      17             : class nsCSSValue;
      18             : 
      19             : typedef nsMappedAttributeElement nsMathMLElementBase;
      20             : 
      21             : namespace mozilla {
      22             : class EventChainPostVisitor;
      23             : class EventChainPreVisitor;
      24             : } // namespace mozilla
      25             : 
      26             : /*
      27             :  * The base class for MathML elements.
      28             :  */
      29             : class nsMathMLElement final : public nsMathMLElementBase,
      30             :                               public nsIDOMElement,
      31             :                               public mozilla::dom::Link
      32             : {
      33             : public:
      34             :   explicit nsMathMLElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo);
      35             :   explicit nsMathMLElement(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
      36             : 
      37             :   // Implementation of nsISupports is inherited from nsMathMLElementBase
      38             :   NS_DECL_ISUPPORTS_INHERITED
      39             : 
      40             :   // Forward implementations of parent interfaces of nsMathMLElement to
      41             :   // our base class
      42           0 :   NS_FORWARD_NSIDOMNODE_TO_NSINODE
      43           0 :   NS_FORWARD_NSIDOMELEMENT_TO_GENERIC
      44             : 
      45             :   nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent,
      46             :                       nsIContent* aBindingParent,
      47             :                       bool aCompileEventHandlers) override;
      48             :   virtual void UnbindFromTree(bool aDeep = true,
      49             :                               bool aNullParent = true) override;
      50             : 
      51             :   virtual bool ParseAttribute(int32_t aNamespaceID,
      52             :                                 nsIAtom* aAttribute,
      53             :                                 const nsAString& aValue,
      54             :                                 nsAttrValue& aResult) override;
      55             : 
      56             :   NS_IMETHOD_(bool) IsAttributeMapped(const nsIAtom* aAttribute) const override;
      57             :   virtual nsMapRuleToAttributesFunc GetAttributeMappingFunction() const override;
      58             : 
      59             :   enum {
      60             :     PARSE_ALLOW_UNITLESS = 0x01, // unitless 0 will be turned into 0px
      61             :     PARSE_ALLOW_NEGATIVE = 0x02,
      62             :     PARSE_SUPPRESS_WARNINGS = 0x04,
      63             :     CONVERT_UNITLESS_TO_PERCENT = 0x08
      64             :   };
      65             :   static bool ParseNamedSpaceValue(const nsString& aString,
      66             :                                    nsCSSValue&     aCSSValue,
      67             :                                    uint32_t        aFlags);
      68             : 
      69             :   static bool ParseNumericValue(const nsString& aString,
      70             :                                 nsCSSValue&     aCSSValue,
      71             :                                 uint32_t        aFlags,
      72             :                                 nsIDocument*    aDocument);
      73             : 
      74             :   static void MapMathMLAttributesInto(const nsMappedAttributes* aAttributes,
      75             :                                       mozilla::GenericSpecifiedValues* aGenericData);
      76             : 
      77             :   virtual nsresult GetEventTargetParent(
      78             :                      mozilla::EventChainPreVisitor& aVisitor) override;
      79             :   virtual nsresult PostHandleEvent(
      80             :                      mozilla::EventChainPostVisitor& aVisitor) override;
      81             :   nsresult Clone(mozilla::dom::NodeInfo* aNodeInfo, nsINode** aResult,
      82             :                  bool aPreallocateChildren) const override;
      83             :   virtual mozilla::EventStates IntrinsicState() const override;
      84             :   virtual bool IsNodeOfType(uint32_t aFlags) const override;
      85             : 
      86             :   // Set during reflow as necessary. Does a style change notification,
      87             :   // aNotify must be true.
      88             :   void SetIncrementScriptLevel(bool aIncrementScriptLevel, bool aNotify);
      89           0 :   bool GetIncrementScriptLevel() const {
      90           0 :     return mIncrementScriptLevel;
      91             :   }
      92             : 
      93             :   virtual bool IsFocusableInternal(int32_t* aTabIndex, bool aWithMouse) override;
      94             :   virtual bool IsLink(nsIURI** aURI) const override;
      95             :   virtual void GetLinkTarget(nsAString& aTarget) override;
      96             :   virtual already_AddRefed<nsIURI> GetHrefURI() const override;
      97             : 
      98           0 :   virtual nsIDOMNode* AsDOMNode() override { return this; }
      99             : 
     100           0 :   virtual void NodeInfoChanged(nsIDocument* aOldDoc) override
     101             :   {
     102           0 :     ClearHasPendingLinkUpdate();
     103           0 :     nsMathMLElementBase::NodeInfoChanged(aOldDoc);
     104           0 :   }
     105             : 
     106             : protected:
     107           0 :   virtual ~nsMathMLElement() {}
     108             : 
     109             :   virtual JSObject* WrapNode(JSContext *aCx, JS::Handle<JSObject*> aGivenProto) override;
     110             : 
     111             :   virtual nsresult AfterSetAttr(int32_t aNameSpaceID, nsIAtom* aName,
     112             :                                 const nsAttrValue* aValue,
     113             :                                 const nsAttrValue* aOldValue,
     114             :                                 bool aNotify) override;
     115             : 
     116             : private:
     117             :   bool mIncrementScriptLevel;
     118             : };
     119             : 
     120             : #endif // nsMathMLElement_h