diff options
Diffstat (limited to 'dom/base/Element.h')
| -rw-r--r-- | dom/base/Element.h | 252 |
1 files changed, 191 insertions, 61 deletions
diff --git a/dom/base/Element.h b/dom/base/Element.h index 782004703..3d9b80a98 100644 --- a/dom/base/Element.h +++ b/dom/base/Element.h @@ -41,6 +41,7 @@ #include "Units.h" #include "DOMIntersectionObserver.h" +class mozAutoDocUpdate; class nsIFrame; class nsIDOMMozNamedAttrMap; class nsIURI; @@ -143,7 +144,6 @@ class CustomElementRegistry; class Link; class DOMRect; class DOMRectList; -class DestinationInsertionPointList; class Grid; // IID for the dom::Element interface @@ -255,6 +255,23 @@ public: void ClearStyleStateLocks(); /** + * Accessors for the state of our dir attribute. + */ + bool HasDirAuto() const + { + return State().HasState(NS_EVENT_STATE_DIR_ATTR_LIKE_AUTO); + } + + /** + * Elements with dir="rtl" or dir="ltr". + */ + bool HasFixedDir() const + { + return State().HasAtLeastOneOfStates(NS_EVENT_STATE_DIR_ATTR_LTR | + NS_EVENT_STATE_DIR_ATTR_RTL); + } + + /** * Get the inline style declaration, if any, for this element. */ virtual DeclarationBlock* GetInlineStyleDeclaration(); @@ -379,17 +396,10 @@ public: bool GetBindingURL(nsIDocument *aDocument, css::URLValue **aResult); - // The bdi element defaults to dir=auto if it has no dir attribute set. - // Other elements will only have dir=auto if they have an explicit dir=auto, - // which will mean that HasValidDir() returns true but HasFixedDir() returns - // false - inline bool HasDirAuto() const { - return (!HasFixedDir() && - (HasValidDir() || IsHTMLElement(nsGkAtoms::bdi))); - } - Directionality GetComputedDirectionality() const; + inline Element* GetFlattenedTreeParentElementForStyle() const; + /** * Gets the custom element data used by web components custom element. * Custom element data is created at the first attempt to enqueue a callback. @@ -460,6 +470,9 @@ protected: mState &= ~aStates; } + already_AddRefed<ShadowRoot> AttachShadowInternal(bool aClosed, + ErrorResult& aError); + private: // Need to allow the ESM, nsGlobalWindow, and the focus manager to // set our state @@ -498,6 +511,16 @@ protected: RemoveStatesSilently(aStates); NotifyStateChange(aStates); } + virtual void ToggleStates(EventStates aStates, bool aNotify) + { + NS_PRECONDITION(!aStates.HasAtLeastOneOfStates(INTRINSIC_STATES), + "Should only be removing externally-managed states here"); + mState ^= aStates; + if (aNotify) { + NotifyStateChange(aStates); + } + } + public: virtual void UpdateEditableState(bool aNotify) override; @@ -520,6 +543,7 @@ public: already_AddRefed<mozilla::dom::NodeInfo> GetExistingAttrNameFromQName(const nsAString& aStr) const; + MOZ_ALWAYS_INLINE // Avoid a crashy hook from Avast 10 Beta (Bug 1058131) nsresult SetAttr(int32_t aNameSpaceID, nsIAtom* aName, const nsAString& aValue, bool aNotify) { @@ -534,25 +558,57 @@ public: * values will not actually be compared if we aren't notifying and we don't * have mutation listeners (in which case it's cheap to just return false * and let the caller go ahead and set the value). - * @param aOldValue Set to the old value of the attribute, but only if there - * are event listeners. If set, the type of aOldValue will be either + * @param aOldValue [out] Set to the old value of the attribute, but only if + * there are event listeners. If set, the type of aOldValue will be either * nsAttrValue::eString or nsAttrValue::eAtom. - * @param aModType Set to nsIDOMMutationEvent::MODIFICATION or to + * @param aModType [out] Set to nsIDOMMutationEvent::MODIFICATION or to * nsIDOMMutationEvent::ADDITION, but only if this helper returns true - * @param aHasListeners Set to true if there are mutation event listeners - * listening for NS_EVENT_BITS_MUTATION_ATTRMODIFIED + * @param aHasListeners [out] Set to true if there are mutation event + * listeners listening for NS_EVENT_BITS_MUTATION_ATTRMODIFIED + * @param aOldValueSet [out] Indicates whether an old attribute value has been + * stored in aOldValue. The bool will be set to true if a value was stored. */ bool MaybeCheckSameAttrVal(int32_t aNamespaceID, nsIAtom* aName, nsIAtom* aPrefix, const nsAttrValueOrString& aValue, bool aNotify, nsAttrValue& aOldValue, - uint8_t* aModType, bool* aHasListeners); + uint8_t* aModType, bool* aHasListeners, + bool* aOldValueSet); + + /** + * Notifies mutation listeners if aNotify is true, there are mutation + * listeners, and the attribute value is changing. + * + * @param aNamespaceID The namespace of the attribute + * @param aName The local name of the attribute + * @param aPrefix The prefix of the attribute + * @param aValue The value that the attribute is being changed to + * @param aNotify If true, mutation listeners will be notified if they exist + * and the attribute value is changing + * @param aOldValue [out] Set to the old value of the attribute, but only if + * there are event listeners. If set, the type of aOldValue will be either + * nsAttrValue::eString or nsAttrValue::eAtom. + * @param aModType [out] Set to nsIDOMMutationEvent::MODIFICATION or to + * nsIDOMMutationEvent::ADDITION, but only if this helper returns true + * @param aHasListeners [out] Set to true if there are mutation event + * listeners listening for NS_EVENT_BITS_MUTATION_ATTRMODIFIED + * @param aOldValueSet [out] Indicates whether an old attribute value has been + * stored in aOldValue. The bool will be set to true if a value was stored. + */ bool OnlyNotifySameValueSet(int32_t aNamespaceID, nsIAtom* aName, nsIAtom* aPrefix, const nsAttrValueOrString& aValue, bool aNotify, nsAttrValue& aOldValue, - uint8_t* aModType, bool* aHasListeners); + uint8_t* aModType, bool* aHasListeners, + bool* aOldValueSet); + + /** + * Sets the class attribute to a value that contains no whitespace. + * Assumes that we are not notifying and that the attribute hasn't been + * set previously. + */ + nsresult SetSingleClassFromParser(nsIAtom* aSingleClassName); virtual nsresult SetAttr(int32_t aNameSpaceID, nsIAtom* aName, nsIAtom* aPrefix, const nsAString& aValue, bool aNotify) override; @@ -589,7 +645,7 @@ public: * guaranteed (e.g. we could have class=""). */ const nsAttrValue* GetClasses() const { - if (HasFlag(NODE_MAY_HAVE_CLASS)) { + if (MayHaveClass()) { return DoGetClasses(); } return nullptr; @@ -761,6 +817,25 @@ public: already_AddRefed<nsIHTMLCollection> GetElementsByClassName(const nsAString& aClassNames); + CSSPseudoElementType GetPseudoElementType() const { + if (!HasProperties()) { + return CSSPseudoElementType::NotPseudo; + } + nsresult rv = NS_OK; + auto raw = GetProperty(nsGkAtoms::pseudoProperty, &rv); + if (rv == NS_PROPTABLE_PROP_NOT_THERE) { + return CSSPseudoElementType::NotPseudo; + } + return CSSPseudoElementType(reinterpret_cast<uintptr_t>(raw)); + } + + void SetPseudoElementType(CSSPseudoElementType aPseudo) { + static_assert(sizeof(CSSPseudoElementType) <= sizeof(uintptr_t), + "Need to be able to store this in a void*"); + MOZ_ASSERT(aPseudo != CSSPseudoElementType::NotPseudo); + SetProperty(nsGkAtoms::pseudoProperty, reinterpret_cast<void*>(aPseudo)); + } + private: /** * Implement the algorithm specified at @@ -848,8 +923,15 @@ public: already_AddRefed<DOMRectList> GetClientRects(); already_AddRefed<DOMRect> GetBoundingClientRect(); + // Shadow DOM v1 + already_AddRefed<ShadowRoot> AttachShadow(const ShadowRootInit& aInit, + ErrorResult& aError); + ShadowRoot* GetShadowRootByMode() const; + void SetSlot(const nsAString& aName, ErrorResult& aError); + void GetSlot(nsAString& aName); + + // [deprecated] Shadow DOM v0 already_AddRefed<ShadowRoot> CreateShadowRoot(ErrorResult& aError); - already_AddRefed<DestinationInsertionPointList> GetDestinationInsertionPoints(); ShadowRoot *FastGetShadowRoot() const { @@ -1239,7 +1321,10 @@ protected: * its current value) is !StoresOwnData() --- in which * case the current value is probably already useless. * If the current value is StoresOwnData() (or absent), - * aOldValue will not be used. + * aOldValue will not be used. aOldValue will only be set + * in certain circumstances (there are mutation + * listeners, element is a custom element, attribute was + * not previously unset). Otherwise it will be null. * @param aParsedValue parsed new value of attribute. Replaced by the * old value of the attribute. This old value is only * useful if either it or the new value is StoresOwnData. @@ -1248,16 +1333,19 @@ protected: * @param aFireMutation should mutation-events be fired? * @param aNotify should we notify document-observers? * @param aCallAfterSetAttr should we call AfterSetAttr? + * @param aComposedDocument The current composed document of the element. */ nsresult SetAttrAndNotify(int32_t aNamespaceID, nsIAtom* aName, nsIAtom* aPrefix, - const nsAttrValue& aOldValue, + const nsAttrValue* aOldValue, nsAttrValue& aParsedValue, uint8_t aModType, bool aFireMutation, bool aNotify, - bool aCallAfterSetAttr); + bool aCallAfterSetAttr, + nsIDocument* aComposedDocument, + const mozAutoDocUpdate& aGuard); /** * Scroll to a new position using behavior evaluated from CSS and @@ -1295,14 +1383,21 @@ protected: * * @param aDocument the current document of this node (an optimization) * @param aName the name of the attribute - * @param aValue the nsAttrValue to set + * @param aValue the nsAttrValue to set. Will be swapped with the existing + * value of the attribute if the attribute already exists. + * @param [out] aValueWasSet If the attribute was not set previously, + * aValue will be swapped with an empty attribute + * and aValueWasSet will be set to false. Otherwise, + * aValueWasSet will be set to true and aValue will + * contain the previous value set. * @param [out] aRetval the nsresult status of the operation, if any. * @return true if the setting was attempted, false otherwise. */ - virtual bool SetMappedAttribute(nsIDocument* aDocument, - nsIAtom* aName, - nsAttrValue& aValue, - nsresult* aRetval); + virtual bool SetAndSwapMappedAttribute(nsIDocument* aDocument, + nsIAtom* aName, + nsAttrValue& aValue, + bool* aValueWasSet, + nsresult* aRetval); /** * Hook that is called by Element::SetAttr to allow subclasses to @@ -1315,33 +1410,92 @@ protected: * @param aName the localname of the attribute being set * @param aValue the value it's being set to represented as either a string or * a parsed nsAttrValue. Alternatively, if the attr is being removed it - * will be null. BeforeSetAttr is allowed to modify aValue by parsing - * the string to an nsAttrValue (to avoid having to reparse it in - * ParseAttribute). + * will be null. * @param aNotify Whether we plan to notify document observers. */ - // Note that this is inlined so that when subclasses call it it gets - // inlined. Those calls don't go through a vtable. virtual nsresult BeforeSetAttr(int32_t aNamespaceID, nsIAtom* aName, - nsAttrValueOrString* aValue, + const nsAttrValueOrString* aValue, bool aNotify); /** * Hook that is called by Element::SetAttr to allow subclasses to * deal with attribute sets. This will only be called after we have called - * SetAndTakeAttr and AttributeChanged (that is, after we have actually set - * the attr). It will always be called under a scriptblocker. + * SetAndSwapAttr (that is, after we have actually set the attr). It will + * always be called under a scriptblocker. * * @param aNamespaceID the namespace of the attr being set * @param aName the localname of the attribute being set * @param aValue the value it's being set to. If null, the attr is being * removed. + * @param aOldValue the value that the attribute had previously. If null, + * the attr was not previously set. This argument may not have the + * correct value for SVG elements, or other cases in which the + * attribute value doesn't store its own data * @param aNotify Whether we plan to notify document observers. */ // Note that this is inlined so that when subclasses call it it gets // inlined. Those calls don't go through a vtable. virtual nsresult AfterSetAttr(int32_t aNamespaceID, nsIAtom* aName, - const nsAttrValue* aValue, bool aNotify) + const nsAttrValue* aValue, + const nsAttrValue* aOldValue, bool aNotify) + { + return NS_OK; + } + + /** + * This function shall be called just before the id attribute changes. It will + * be called after BeforeSetAttr. If the attribute being changed is not the id + * attribute, this function does nothing. Otherwise, it will remove the old id + * from the document's id cache. + * + * This must happen after BeforeSetAttr (rather than during) because the + * the subclasses' calls to BeforeSetAttr may notify on state changes. If they + * incorrectly determine whether the element had an id, the element may not be + * restyled properly. + * + * @param aNamespaceID the namespace of the attr being set + * @param aName the localname of the attribute being set + * @param aValue the new id value. Will be null if the id is being unset. + */ + void PreIdMaybeChange(int32_t aNamespaceID, nsIAtom* aName, + const nsAttrValueOrString* aValue); + + /** + * This function shall be called just after the id attribute changes. It will + * be called before AfterSetAttr. If the attribute being changed is not the id + * attribute, this function does nothing. Otherwise, it will add the new id to + * the document's id cache and properly set the ElementHasID flag. + * + * This must happen before AfterSetAttr (rather than during) because the + * the subclasses' calls to AfterSetAttr may notify on state changes. If they + * incorrectly determine whether the element now has an id, the element may + * not be restyled properly. + * + * @param aNamespaceID the namespace of the attr being set + * @param aName the localname of the attribute being set + * @param aValue the new id value. Will be null if the id is being unset. + */ + void PostIdMaybeChange(int32_t aNamespaceID, nsIAtom* aName, + const nsAttrValue* aValue); + + /** + * Usually, setting an attribute to the value that it already has results in + * no action. However, in some cases, setting an attribute to its current + * value should have the effect of, for example, forcing a reload of + * network data. To address that, this function will be called in this + * situation to allow the handling of such a case. + * + * @param aNamespaceID the namespace of the attr being set + * @param aName the localname of the attribute being set + * @param aValue the value it's being set to represented as either a string or + * a parsed nsAttrValue. + * @param aNotify Whether we plan to notify document observers. + */ + // Note that this is inlined so that when subclasses call it it gets + // inlined. Those calls don't go through a vtable. + virtual nsresult OnAttrSetButNotChanged(int32_t aNamespaceID, nsIAtom* aName, + const nsAttrValueOrString& aValue, + bool aNotify) { return NS_OK; } @@ -1400,7 +1554,7 @@ protected: /** * Handle status bar updates before they can be cancelled. */ - nsresult PreHandleEventForLinks(EventChainPreVisitor& aVisitor); + nsresult GetEventTargetParentForLinks(EventChainPreVisitor& aVisitor); /** * Handle default actions for link event if the event isn't consumed yet. @@ -1460,30 +1614,6 @@ private: nsCOMPtr<nsIDocument> mDoc; }; -class DestinationInsertionPointList : public nsINodeList -{ -public: - explicit DestinationInsertionPointList(Element* aElement); - - NS_DECL_CYCLE_COLLECTING_ISUPPORTS - NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(DestinationInsertionPointList) - - // nsIDOMNodeList - NS_DECL_NSIDOMNODELIST - - // nsINodeList - virtual nsIContent* Item(uint32_t aIndex) override; - virtual int32_t IndexOf(nsIContent* aContent) override; - virtual nsINode* GetParentObject() override { return mParent; } - virtual uint32_t Length() const; - virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override; -protected: - virtual ~DestinationInsertionPointList(); - - RefPtr<Element> mParent; - nsCOMArray<nsIContent> mDestinationPoints; -}; - NS_DEFINE_STATIC_IID_ACCESSOR(Element, NS_ELEMENT_IID) inline bool |