The Tor Browser / file comparison
comparison: content/base/src/nsGenericDOMDataNode.h
content/base/src/nsGenericDOMDataNode.h
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- changeset 13
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| -1:000000000000 | 0:8daf9c1e3683 |
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| 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 * Base class for DOM Core's nsIDOMComment, nsIDOMDocumentType, nsIDOMText, | |
| 8 * nsIDOMCDATASection, and nsIDOMProcessingInstruction nodes. | |
| 9 */ | |
| 10 | |
| 11 #ifndef nsGenericDOMDataNode_h___ | |
| 12 #define nsGenericDOMDataNode_h___ | |
| 13 | |
| 14 #include "mozilla/Attributes.h" | |
| 15 #include "nsIContent.h" | |
| 16 | |
| 17 #include "nsTextFragment.h" | |
| 18 #include "nsError.h" | |
| 19 #include "mozilla/dom/Element.h" | |
| 20 #include "nsCycleCollectionParticipant.h" | |
| 21 | |
| 22 #include "nsISMILAttr.h" | |
| 23 #include "nsIDocument.h" | |
| 24 | |
| 25 class nsIDOMAttr; | |
| 26 class nsIDOMEventListener; | |
| 27 class nsIDOMNodeList; | |
| 28 class nsIFrame; | |
| 29 class nsIDOMText; | |
| 30 class nsINodeInfo; | |
| 31 class nsURI; | |
| 32 | |
| 33 #define DATA_NODE_FLAG_BIT(n_) NODE_FLAG_BIT(NODE_TYPE_SPECIFIC_BITS_OFFSET + (n_)) | |
| 34 | |
| 35 // Data node specific flags | |
| 36 enum { | |
| 37 // This bit is set to indicate that if the text node changes to | |
| 38 // non-whitespace, we may need to create a frame for it. This bit must | |
| 39 // not be set on nodes that already have a frame. | |
| 40 NS_CREATE_FRAME_IF_NON_WHITESPACE = DATA_NODE_FLAG_BIT(0), | |
| 41 | |
| 42 // This bit is set to indicate that if the text node changes to | |
| 43 // whitespace, we may need to reframe it (or its ancestors). | |
| 44 NS_REFRAME_IF_WHITESPACE = DATA_NODE_FLAG_BIT(1), | |
| 45 | |
| 46 // This bit is set to indicate that we have a cached | |
| 47 // TextIsOnlyWhitespace value | |
| 48 NS_CACHED_TEXT_IS_ONLY_WHITESPACE = DATA_NODE_FLAG_BIT(2), | |
| 49 | |
| 50 // This bit is only meaningful if the NS_CACHED_TEXT_IS_ONLY_WHITESPACE | |
| 51 // bit is set, and if so it indicates whether we're only whitespace or | |
| 52 // not. | |
| 53 NS_TEXT_IS_ONLY_WHITESPACE = DATA_NODE_FLAG_BIT(3), | |
| 54 }; | |
| 55 | |
| 56 // Make sure we have enough space for those bits | |
| 57 ASSERT_NODE_FLAGS_SPACE(NODE_TYPE_SPECIFIC_BITS_OFFSET + 4); | |
| 58 | |
| 59 #undef DATA_NODE_FLAG_BIT | |
| 60 | |
| 61 class nsGenericDOMDataNode : public nsIContent | |
| 62 { | |
| 63 public: | |
| 64 NS_DECL_CYCLE_COLLECTING_ISUPPORTS | |
| 65 | |
| 66 NS_DECL_SIZEOF_EXCLUDING_THIS | |
| 67 | |
| 68 nsGenericDOMDataNode(already_AddRefed<nsINodeInfo>& aNodeInfo); | |
| 69 nsGenericDOMDataNode(already_AddRefed<nsINodeInfo>&& aNodeInfo); | |
| 70 virtual ~nsGenericDOMDataNode(); | |
| 71 | |
| 72 virtual void GetNodeValueInternal(nsAString& aNodeValue) MOZ_OVERRIDE; | |
| 73 virtual void SetNodeValueInternal(const nsAString& aNodeValue, | |
| 74 mozilla::ErrorResult& aError) MOZ_OVERRIDE; | |
| 75 | |
| 76 // Implementation for nsIDOMCharacterData | |
| 77 nsresult GetData(nsAString& aData) const; | |
| 78 nsresult SetData(const nsAString& aData); | |
| 79 nsresult GetLength(uint32_t* aLength); | |
| 80 nsresult SubstringData(uint32_t aOffset, uint32_t aCount, | |
| 81 nsAString& aReturn); | |
| 82 nsresult AppendData(const nsAString& aArg); | |
| 83 nsresult InsertData(uint32_t aOffset, const nsAString& aArg); | |
| 84 nsresult DeleteData(uint32_t aOffset, uint32_t aCount); | |
| 85 nsresult ReplaceData(uint32_t aOffset, uint32_t aCount, | |
| 86 const nsAString& aArg); | |
| 87 NS_IMETHOD MozRemove(); | |
| 88 | |
| 89 // nsINode methods | |
| 90 virtual uint32_t GetChildCount() const MOZ_OVERRIDE; | |
| 91 virtual nsIContent *GetChildAt(uint32_t aIndex) const MOZ_OVERRIDE; | |
| 92 virtual nsIContent * const * GetChildArray(uint32_t* aChildCount) const MOZ_OVERRIDE; | |
| 93 virtual int32_t IndexOf(const nsINode* aPossibleChild) const MOZ_OVERRIDE; | |
| 94 virtual nsresult InsertChildAt(nsIContent* aKid, uint32_t aIndex, | |
| 95 bool aNotify) MOZ_OVERRIDE; | |
| 96 virtual void RemoveChildAt(uint32_t aIndex, bool aNotify) MOZ_OVERRIDE; | |
| 97 virtual void GetTextContentInternal(nsAString& aTextContent) MOZ_OVERRIDE | |
| 98 { | |
| 99 GetNodeValue(aTextContent); | |
| 100 } | |
| 101 virtual void SetTextContentInternal(const nsAString& aTextContent, | |
| 102 mozilla::ErrorResult& aError) MOZ_OVERRIDE | |
| 103 { | |
| 104 // Batch possible DOMSubtreeModified events. | |
| 105 mozAutoSubtreeModified subtree(OwnerDoc(), nullptr); | |
| 106 return SetNodeValue(aTextContent, aError); | |
| 107 } | |
| 108 | |
| 109 // Implementation for nsIContent | |
| 110 virtual nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent, | |
| 111 nsIContent* aBindingParent, | |
| 112 bool aCompileEventHandlers) MOZ_OVERRIDE; | |
| 113 virtual void UnbindFromTree(bool aDeep = true, | |
| 114 bool aNullParent = true) MOZ_OVERRIDE; | |
| 115 | |
| 116 virtual already_AddRefed<nsINodeList> GetChildren(uint32_t aFilter) MOZ_OVERRIDE; | |
| 117 | |
| 118 virtual nsIAtom *GetIDAttributeName() const MOZ_OVERRIDE; | |
| 119 | |
| 120 nsresult SetAttr(int32_t aNameSpaceID, nsIAtom* aName, | |
| 121 const nsAString& aValue, bool aNotify) | |
| 122 { | |
| 123 return SetAttr(aNameSpaceID, aName, nullptr, aValue, aNotify); | |
| 124 } | |
| 125 virtual nsresult SetAttr(int32_t aNameSpaceID, nsIAtom* aAttribute, | |
| 126 nsIAtom* aPrefix, const nsAString& aValue, | |
| 127 bool aNotify) MOZ_OVERRIDE; | |
| 128 virtual nsresult UnsetAttr(int32_t aNameSpaceID, nsIAtom* aAttribute, | |
| 129 bool aNotify) MOZ_OVERRIDE; | |
| 130 virtual const nsAttrName* GetAttrNameAt(uint32_t aIndex) const MOZ_OVERRIDE; | |
| 131 virtual uint32_t GetAttrCount() const MOZ_OVERRIDE; | |
| 132 virtual const nsTextFragment *GetText() MOZ_OVERRIDE; | |
| 133 virtual uint32_t TextLength() const MOZ_OVERRIDE; | |
| 134 virtual nsresult SetText(const char16_t* aBuffer, uint32_t aLength, | |
| 135 bool aNotify) MOZ_OVERRIDE; | |
| 136 // Need to implement this here too to avoid hiding. | |
| 137 nsresult SetText(const nsAString& aStr, bool aNotify) | |
| 138 { | |
| 139 return SetText(aStr.BeginReading(), aStr.Length(), aNotify); | |
| 140 } | |
| 141 virtual nsresult AppendText(const char16_t* aBuffer, uint32_t aLength, | |
| 142 bool aNotify) MOZ_OVERRIDE; | |
| 143 virtual bool TextIsOnlyWhitespace() MOZ_OVERRIDE; | |
| 144 virtual bool HasTextForTranslation() MOZ_OVERRIDE; | |
| 145 virtual void AppendTextTo(nsAString& aResult) MOZ_OVERRIDE; | |
| 146 virtual bool AppendTextTo(nsAString& aResult, | |
| 147 const mozilla::fallible_t&) MOZ_OVERRIDE NS_WARN_UNUSED_RESULT; | |
| 148 virtual void DestroyContent() MOZ_OVERRIDE; | |
| 149 virtual void SaveSubtreeState() MOZ_OVERRIDE; | |
| 150 | |
| 151 #ifdef DEBUG | |
| 152 virtual void List(FILE* out, int32_t aIndent) const MOZ_OVERRIDE; | |
| 153 virtual void DumpContent(FILE* out, int32_t aIndent, bool aDumpAll) const MOZ_OVERRIDE; | |
| 154 #endif | |
| 155 | |
| 156 virtual nsIContent *GetBindingParent() const MOZ_OVERRIDE; | |
| 157 virtual nsXBLBinding *GetXBLBinding() const MOZ_OVERRIDE; | |
| 158 virtual void SetXBLBinding(nsXBLBinding* aBinding, | |
| 159 nsBindingManager* aOldBindingManager = nullptr) MOZ_OVERRIDE; | |
| 160 virtual mozilla::dom::ShadowRoot *GetContainingShadow() const MOZ_OVERRIDE; | |
| 161 virtual mozilla::dom::ShadowRoot *GetShadowRoot() const MOZ_OVERRIDE; | |
| 162 virtual void SetShadowRoot(mozilla::dom::ShadowRoot* aShadowRoot) MOZ_OVERRIDE; | |
| 163 virtual nsIContent *GetXBLInsertionParent() const MOZ_OVERRIDE; | |
| 164 virtual void SetXBLInsertionParent(nsIContent* aContent) MOZ_OVERRIDE; | |
| 165 virtual bool IsNodeOfType(uint32_t aFlags) const MOZ_OVERRIDE; | |
| 166 virtual bool IsLink(nsIURI** aURI) const MOZ_OVERRIDE; | |
| 167 | |
| 168 virtual mozilla::dom::CustomElementData* GetCustomElementData() const MOZ_OVERRIDE; | |
| 169 virtual void SetCustomElementData(mozilla::dom::CustomElementData* aData) MOZ_OVERRIDE; | |
| 170 | |
| 171 virtual nsIAtom* DoGetID() const MOZ_OVERRIDE; | |
| 172 virtual const nsAttrValue* DoGetClasses() const MOZ_OVERRIDE; | |
| 173 NS_IMETHOD WalkContentStyleRules(nsRuleWalker* aRuleWalker) MOZ_OVERRIDE; | |
| 174 NS_IMETHOD_(bool) IsAttributeMapped(const nsIAtom* aAttribute) const; | |
| 175 virtual nsChangeHint GetAttributeChangeHint(const nsIAtom* aAttribute, | |
| 176 int32_t aModType) const; | |
| 177 virtual nsIAtom *GetClassAttributeName() const; | |
| 178 | |
| 179 virtual nsresult Clone(nsINodeInfo *aNodeInfo, nsINode **aResult) const MOZ_OVERRIDE | |
| 180 { | |
| 181 *aResult = CloneDataNode(aNodeInfo, true); | |
| 182 if (!*aResult) { | |
| 183 return NS_ERROR_OUT_OF_MEMORY; | |
| 184 } | |
| 185 | |
| 186 NS_ADDREF(*aResult); | |
| 187 | |
| 188 return NS_OK; | |
| 189 } | |
| 190 | |
| 191 nsresult SplitData(uint32_t aOffset, nsIContent** aReturn, | |
| 192 bool aCloneAfterOriginal = true); | |
| 193 | |
| 194 // WebIDL API | |
| 195 // Our XPCOM GetData is just fine for WebIDL | |
| 196 virtual void SetData(const nsAString& aData, mozilla::ErrorResult& rv) | |
| 197 { | |
| 198 rv = SetData(aData); | |
| 199 } | |
| 200 // nsINode::Length() returns the right thing for our length attribute | |
| 201 void SubstringData(uint32_t aStart, uint32_t aCount, nsAString& aReturn, | |
| 202 mozilla::ErrorResult& rv); | |
| 203 void AppendData(const nsAString& aData, mozilla::ErrorResult& rv) | |
| 204 { | |
| 205 rv = AppendData(aData); | |
| 206 } | |
| 207 void InsertData(uint32_t aOffset, const nsAString& aData, | |
| 208 mozilla::ErrorResult& rv) | |
| 209 { | |
| 210 rv = InsertData(aOffset, aData); | |
| 211 } | |
| 212 void DeleteData(uint32_t aOffset, uint32_t aCount, mozilla::ErrorResult& rv) | |
| 213 { | |
| 214 rv = DeleteData(aOffset, aCount); | |
| 215 } | |
| 216 void ReplaceData(uint32_t aOffset, uint32_t aCount, const nsAString& aData, | |
| 217 mozilla::ErrorResult& rv) | |
| 218 { | |
| 219 rv = ReplaceData(aOffset, aCount, aData); | |
| 220 } | |
| 221 | |
| 222 //---------------------------------------- | |
| 223 | |
| 224 #ifdef DEBUG | |
| 225 void ToCString(nsAString& aBuf, int32_t aOffset, int32_t aLen) const; | |
| 226 #endif | |
| 227 | |
| 228 NS_DECL_CYCLE_COLLECTION_SKIPPABLE_SCRIPT_HOLDER_CLASS(nsGenericDOMDataNode) | |
| 229 | |
| 230 protected: | |
| 231 virtual mozilla::dom::Element* GetNameSpaceElement() | |
| 232 { | |
| 233 nsINode *parent = GetParentNode(); | |
| 234 | |
| 235 return parent && parent->IsElement() ? parent->AsElement() : nullptr; | |
| 236 } | |
| 237 | |
| 238 /** | |
| 239 * There are a set of DOM- and scripting-specific instance variables | |
| 240 * that may only be instantiated when a content object is accessed | |
| 241 * through the DOM. Rather than burn actual slots in the content | |
| 242 * objects for each of these instance variables, we put them off | |
| 243 * in a side structure that's only allocated when the content is | |
| 244 * accessed through the DOM. | |
| 245 */ | |
| 246 class nsDataSlots : public nsINode::nsSlots | |
| 247 { | |
| 248 public: | |
| 249 nsDataSlots(); | |
| 250 | |
| 251 void Traverse(nsCycleCollectionTraversalCallback &cb); | |
| 252 void Unlink(); | |
| 253 | |
| 254 /** | |
| 255 * The nearest enclosing content node with a binding that created us. | |
| 256 * @see nsIContent::GetBindingParent | |
| 257 */ | |
| 258 nsIContent* mBindingParent; // [Weak] | |
| 259 | |
| 260 /** | |
| 261 * @see nsIContent::GetXBLInsertionParent | |
| 262 */ | |
| 263 nsCOMPtr<nsIContent> mXBLInsertionParent; | |
| 264 | |
| 265 /** | |
| 266 * @see nsIContent::GetContainingShadow | |
| 267 */ | |
| 268 nsRefPtr<mozilla::dom::ShadowRoot> mContainingShadow; | |
| 269 }; | |
| 270 | |
| 271 // Override from nsINode | |
| 272 virtual nsINode::nsSlots* CreateSlots() MOZ_OVERRIDE; | |
| 273 | |
| 274 nsDataSlots* DataSlots() | |
| 275 { | |
| 276 return static_cast<nsDataSlots*>(Slots()); | |
| 277 } | |
| 278 | |
| 279 nsDataSlots *GetExistingDataSlots() const | |
| 280 { | |
| 281 return static_cast<nsDataSlots*>(GetExistingSlots()); | |
| 282 } | |
| 283 | |
| 284 nsresult SplitText(uint32_t aOffset, nsIDOMText** aReturn); | |
| 285 | |
| 286 nsresult GetWholeText(nsAString& aWholeText); | |
| 287 | |
| 288 static int32_t FirstLogicallyAdjacentTextNode(nsIContent* aParent, | |
| 289 int32_t aIndex); | |
| 290 | |
| 291 static int32_t LastLogicallyAdjacentTextNode(nsIContent* aParent, | |
| 292 int32_t aIndex, | |
| 293 uint32_t aCount); | |
| 294 | |
| 295 nsresult SetTextInternal(uint32_t aOffset, uint32_t aCount, | |
| 296 const char16_t* aBuffer, uint32_t aLength, | |
| 297 bool aNotify, | |
| 298 CharacterDataChangeInfo::Details* aDetails = nullptr); | |
| 299 | |
| 300 /** | |
| 301 * Method to clone this node. This needs to be overriden by all derived | |
| 302 * classes. If aCloneText is true the text content will be cloned too. | |
| 303 * | |
| 304 * @param aOwnerDocument the ownerDocument of the clone | |
| 305 * @param aCloneText if true the text content will be cloned too | |
| 306 * @return the clone | |
| 307 */ | |
| 308 virtual nsGenericDOMDataNode *CloneDataNode(nsINodeInfo *aNodeInfo, | |
| 309 bool aCloneText) const = 0; | |
| 310 | |
| 311 nsTextFragment mText; | |
| 312 | |
| 313 public: | |
| 314 virtual bool OwnedOnlyByTheDOMTree() MOZ_OVERRIDE | |
| 315 { | |
| 316 return GetParent() && mRefCnt.get() == 1; | |
| 317 } | |
| 318 | |
| 319 virtual bool IsPurple() MOZ_OVERRIDE | |
| 320 { | |
| 321 return mRefCnt.IsPurple(); | |
| 322 } | |
| 323 virtual void RemovePurple() MOZ_OVERRIDE | |
| 324 { | |
| 325 mRefCnt.RemovePurple(); | |
| 326 } | |
| 327 | |
| 328 private: | |
| 329 already_AddRefed<nsIAtom> GetCurrentValueAtom(); | |
| 330 }; | |
| 331 | |
| 332 #endif /* nsGenericDOMDataNode_h___ */ |
