tor-browser

The Tor Browser
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MathMLElement.h (3979B)

      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 mozilla_dom_MathMLElement_h_
      8 #define mozilla_dom_MathMLElement_h_
      9 
     10 #include "Link.h"
     11 #include "mozilla/Attributes.h"
     12 #include "nsStyledElement.h"
     13 
     14 class nsCSSValue;
     15 
     16 namespace mozilla {
     17 class EventChainPostVisitor;
     18 class EventChainPreVisitor;
     19 namespace dom {
     20 
     21 using MathMLElementBase = nsStyledElement;
     22 
     23 /*
     24 * The base class for MathML elements.
     25 */
     26 class MathMLElement final : public MathMLElementBase, public Link {
     27 public:
     28  explicit MathMLElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo);
     29  explicit MathMLElement(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
     30 
     31  // Implementation of nsISupports is inherited from MathMLElementBase
     32  NS_DECL_ISUPPORTS_INHERITED
     33 
     34  NS_IMPL_FROMNODE(MathMLElement, kNameSpaceID_MathML)
     35 
     36  nsresult BindToTree(BindContext&, nsINode& aParent) override;
     37  void UnbindFromTree(UnbindContext&) override;
     38 
     39  bool ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
     40                      const nsAString& aValue,
     41                      nsIPrincipal* aMaybeScriptedPrincipal,
     42                      nsAttrValue& aResult) override;
     43 
     44  NS_IMETHOD_(bool) IsAttributeMapped(const nsAtom* aAttribute) const override;
     45  nsMapRuleToAttributesFunc GetAttributeMappingFunction() const override;
     46 
     47  enum {
     48    PARSE_ALLOW_NEGATIVE = 0x02,
     49    PARSE_SUPPRESS_WARNINGS = 0x04,
     50  };
     51  static bool ParseNamedSpaceValue(const nsString& aString,
     52                                   nsCSSValue& aCSSValue, uint32_t aFlags,
     53                                   const Document& aDocument);
     54 
     55  static bool ParseNumericValue(const nsString& aString, nsCSSValue& aCSSValue,
     56                                uint32_t aFlags, Document* aDocument);
     57 
     58  static void MapGlobalMathMLAttributesInto(
     59      mozilla::MappedDeclarationsBuilder&);
     60  static void MapMiAttributesInto(mozilla::MappedDeclarationsBuilder&);
     61  static void MapMTableAttributesInto(mozilla::MappedDeclarationsBuilder&);
     62 
     63  void GetEventTargetParent(mozilla::EventChainPreVisitor& aVisitor) override;
     64  MOZ_CAN_RUN_SCRIPT
     65  nsresult PostHandleEvent(mozilla::EventChainPostVisitor& aVisitor) override;
     66  nsresult Clone(mozilla::dom::NodeInfo*, nsINode** aResult) const override;
     67 
     68  // Set during reflow as necessary. Does a style change notification,
     69  // aNotify must be true.
     70  void SetIncrementScriptLevel(bool aIncrementScriptLevel, bool aNotify);
     71  bool GetIncrementScriptLevel() const {
     72    return Element::State().HasState(ElementState::INCREMENT_SCRIPT_LEVEL);
     73  }
     74 
     75  int32_t TabIndexDefault() final;
     76 
     77  Focusable IsFocusableWithoutStyle(IsFocusableFlags) override;
     78  already_AddRefed<nsIURI> GetHrefURI() const override;
     79 
     80  void NodeInfoChanged(Document* aOldDoc) override {
     81    ClearHasPendingLinkUpdate();
     82    MathMLElementBase::NodeInfoChanged(aOldDoc);
     83  }
     84 
     85  bool IsEventAttributeNameInternal(nsAtom* aName) final;
     86 
     87  bool Autofocus() const { return GetBoolAttr(nsGkAtoms::autofocus); }
     88  void SetAutofocus(bool aAutofocus, ErrorResult& aRv) {
     89    if (aAutofocus) {
     90      SetAttr(nsGkAtoms::autofocus, u""_ns, aRv);
     91    } else {
     92      UnsetAttr(nsGkAtoms::autofocus, aRv);
     93    }
     94  }
     95 
     96 protected:
     97  virtual ~MathMLElement() = default;
     98 
     99  JSObject* WrapNode(JSContext*, JS::Handle<JSObject*> aGivenProto) override;
    100 
    101  void BeforeSetAttr(int32_t aNamespaceID, nsAtom* aName,
    102                     const nsAttrValue* aValue, bool aNotify) final;
    103  void AfterSetAttr(int32_t aNameSpaceID, nsAtom* aName,
    104                    const nsAttrValue* aValue, const nsAttrValue* aOldValue,
    105                    nsIPrincipal* aSubjectPrincipal, bool aNotify) override;
    106 };
    107 
    108 }  // namespace dom
    109 }  // namespace mozilla
    110 
    111 #endif  // mozilla_dom_MathMLElement_h_