content/base/src/Attr.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 /*
   7  * Implementation of DOM Core's nsIDOMAttr node.
   8  */
   9
  10 #ifndef mozilla_dom_Attr_h
  11 #define mozilla_dom_Attr_h
  12
  13 #include "mozilla/Attributes.h"
  14 #include "nsIAttribute.h"
  15 #include "nsIDOMAttr.h"
  16 #include "nsIDOMText.h"
  17 #include "nsIDOMNodeList.h"
  18 #include "nsString.h"
  19 #include "nsCOMPtr.h"
  20 #include "nsCycleCollectionParticipant.h"
  21 #include "nsStubMutationObserver.h"
  22
  23 class nsIDocument;
  24
  25 namespace mozilla {
  26 class EventChainPreVisitor;
  27 namespace dom {
  28
  29 // Attribute helper class used to wrap up an attribute with a dom
  30 // object that implements nsIDOMAttr and nsIDOMNode
  31 class Attr MOZ_FINAL : public nsIAttribute,
  32                        public nsIDOMAttr
  33 {
  34   virtual ~Attr() {}
  35
  36 public:
  37   Attr(nsDOMAttributeMap* aAttrMap,
  38        already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
  39        const nsAString& aValue,
  40        bool aNsAware);
  41
  42   NS_DECL_CYCLE_COLLECTING_ISUPPORTS
  43
  44   // nsIDOMNode interface
  45   NS_FORWARD_NSIDOMNODE_TO_NSINODE
  46   virtual void GetTextContentInternal(nsAString& aTextContent,
  47                                       ErrorResult& aError) MOZ_OVERRIDE;
  48   virtual void SetTextContentInternal(const nsAString& aTextContent,
  49                                       ErrorResult& aError) MOZ_OVERRIDE;
  50   virtual void GetNodeValueInternal(nsAString& aNodeValue) MOZ_OVERRIDE;
  51   virtual void SetNodeValueInternal(const nsAString& aNodeValue,
  52                                     ErrorResult& aError) MOZ_OVERRIDE;
  53
  54   // nsIDOMAttr interface
  55   NS_DECL_NSIDOMATTR
  56
  57   virtual nsresult PreHandleEvent(EventChainPreVisitor& aVisitor) MOZ_OVERRIDE;
  58
  59   // nsIAttribute interface
  60   void SetMap(nsDOMAttributeMap *aMap) MOZ_OVERRIDE;
  61   Element* GetElement() const;
  62   nsresult SetOwnerDocument(nsIDocument* aDocument) MOZ_OVERRIDE;
  63
  64   // nsINode interface
  65   virtual bool IsNodeOfType(uint32_t aFlags) const MOZ_OVERRIDE;
  66   virtual uint32_t GetChildCount() const MOZ_OVERRIDE;
  67   virtual nsIContent *GetChildAt(uint32_t aIndex) const MOZ_OVERRIDE;
  68   virtual nsIContent * const * GetChildArray(uint32_t* aChildCount) const MOZ_OVERRIDE;
  69   virtual int32_t IndexOf(const nsINode* aPossibleChild) const MOZ_OVERRIDE;
  70   virtual nsresult InsertChildAt(nsIContent* aKid, uint32_t aIndex,
  71                                  bool aNotify) MOZ_OVERRIDE;
  72   virtual void RemoveChildAt(uint32_t aIndex, bool aNotify) MOZ_OVERRIDE;
  73   virtual nsresult Clone(mozilla::dom::NodeInfo *aNodeInfo, nsINode **aResult) const MOZ_OVERRIDE;
  74   virtual already_AddRefed<nsIURI> GetBaseURI(bool aTryUseXHRDocBaseURI = false) const MOZ_OVERRIDE;
  75
  76   static void Initialize();
  77   static void Shutdown();
  78
  79   NS_DECL_CYCLE_COLLECTION_SKIPPABLE_SCRIPT_HOLDER_CLASS_AMBIGUOUS(Attr,
  80                                                                    nsIAttribute)
  81
  82   virtual nsIDOMNode* AsDOMNode() { return this; }
  83
  84   // WebIDL
  85   virtual JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE;
  86
  87   // XPCOM GetName() is OK
  88   // XPCOM GetValue() is OK
  89
  90   void SetValue(const nsAString& aValue, ErrorResult& aRv);
  91
  92   bool Specified() const;
  93
  94   // XPCOM GetNamespaceURI() is OK
  95   // XPCOM GetPrefix() is OK
  96   // XPCOM GetLocalName() is OK
  97
  98   Element* GetOwnerElement(ErrorResult& aRv);
  99
 100 protected:
 101   virtual Element* GetNameSpaceElement()
 102   {
 103     return GetElement();
 104   }
 105
 106   static bool sInitialized;
 107
 108 private:
 109   already_AddRefed<nsIAtom> GetNameAtom(nsIContent* aContent);
 110
 111   nsString mValue;
 112 };
 113
 114 } // namespace dom
 115 } // namespace mozilla
 116
 117 #endif /* mozilla_dom_Attr_h */