/* -*- 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/. */

#ifndef nsMathMLElement_h

#define nsMathMLElement_h

#include "mozilla/Attributes.h"

#include "mozilla/dom/Element.h"

#include "nsMappedAttributeElement.h"

#include "Link.h"

#include "mozilla/dom/DOMRect.h"

class nsCSSValue;

typedef nsMappedAttributeElement nsMathMLElementBase;

namespace mozilla {

class EventChainPostVisitor;

class EventChainPreVisitor;

} // namespace mozilla

/*

 * The base class for MathML elements.

 */

class nsMathMLElement final : public nsMathMLElementBase,

                              public mozilla::dom::Link

{

public:

  explicit nsMathMLElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo);

  explicit nsMathMLElement(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);

  // Implementation of nsISupports is inherited from nsMathMLElementBase

  NS_DECL_ISUPPORTS_INHERITED

  nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent,

                      nsIContent* aBindingParent) override;

  virtual void UnbindFromTree(bool aDeep = true,

                              bool aNullParent = true) override;

  virtual bool ParseAttribute(int32_t aNamespaceID,

                                nsAtom* aAttribute,

                                const nsAString& aValue,

                                nsIPrincipal* aMaybeScriptedPrincipal,

                                nsAttrValue& aResult) override;

  NS_IMETHOD_(bool) IsAttributeMapped(const nsAtom* aAttribute) const override;

  virtual nsMapRuleToAttributesFunc GetAttributeMappingFunction() const override;

  enum {

    PARSE_ALLOW_UNITLESS = 0x01, // unitless 0 will be turned into 0px

    PARSE_ALLOW_NEGATIVE = 0x02,

    PARSE_SUPPRESS_WARNINGS = 0x04,

    CONVERT_UNITLESS_TO_PERCENT = 0x08

  };

  static bool ParseNamedSpaceValue(const nsString& aString,

                                   nsCSSValue&     aCSSValue,

                                   uint32_t        aFlags);

  static bool ParseNumericValue(const nsString& aString,

                                nsCSSValue&     aCSSValue,

                                uint32_t        aFlags,

                                nsIDocument*    aDocument);

  static void MapMathMLAttributesInto(const nsMappedAttributes* aAttributes,

                                      mozilla::MappedDeclarations&);

  void GetEventTargetParent(mozilla::EventChainPreVisitor& aVisitor) override;

  virtual nsresult PostHandleEvent(

                     mozilla::EventChainPostVisitor& aVisitor) override;

  nsresult Clone(mozilla::dom::NodeInfo*, nsINode** aResult) const override;

  virtual mozilla::EventStates IntrinsicState() const override;

  virtual bool IsNodeOfType(uint32_t aFlags) const override;

  // Set during reflow as necessary. Does a style change notification,

  // aNotify must be true.

  void SetIncrementScriptLevel(bool aIncrementScriptLevel, bool aNotify);

  bool GetIncrementScriptLevel() const {

    return mIncrementScriptLevel;

  }

  virtual bool IsFocusableInternal(int32_t* aTabIndex, bool aWithMouse) override;

  virtual bool IsLink(nsIURI** aURI) const override;

  virtual void GetLinkTarget(nsAString& aTarget) override;

  virtual already_AddRefed<nsIURI> GetHrefURI() const override;

  virtual void NodeInfoChanged(nsIDocument* aOldDoc) override

  {

    ClearHasPendingLinkUpdate();

    nsMathMLElementBase::NodeInfoChanged(aOldDoc);

  }

protected:

  virtual ~nsMathMLElement() {}

  virtual JSObject* WrapNode(JSContext *aCx, JS::Handle<JSObject*> aGivenProto) override;

  virtual nsresult AfterSetAttr(int32_t aNameSpaceID, nsAtom* aName,

                                const nsAttrValue* aValue,

                                const nsAttrValue* aOldValue,

                                nsIPrincipal* aSubjectPrincipal,

                                bool aNotify) override;

private:

  bool mIncrementScriptLevel;

};

#endif // nsMathMLElement_h