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tenfourfox/dom/html/nsGenericHTMLElement.h

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/* -*- 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 nsGenericHTMLElement_h___
#define nsGenericHTMLElement_h___
#include "mozilla/Attributes.h"
#include "mozilla/EventForwards.h"
#include "nsMappedAttributeElement.h"
#include "nsIDOMHTMLElement.h"
#include "nsNameSpaceManager.h" // for kNameSpaceID_None
#include "nsIFormControl.h"
#include "nsGkAtoms.h"
#include "nsContentCreatorFunctions.h"
#include "mozilla/ErrorResult.h"
#include "nsIDOMHTMLMenuElement.h"
#include "mozilla/dom/DOMRect.h"
#include "mozilla/dom/ValidityState.h"
#include "mozilla/dom/ElementInlines.h"
class nsDOMTokenList;
class nsIDOMHTMLMenuElement;
class nsIEditor;
class nsIFormControlFrame;
class nsIFrame;
class nsILayoutHistoryState;
class nsIURI;
class nsPresState;
struct nsSize;
namespace mozilla {
class EventChainPostVisitor;
class EventChainPreVisitor;
class EventChainVisitor;
class EventListenerManager;
class EventStates;
namespace dom {
class HTMLFormElement;
class HTMLPropertiesCollection;
class HTMLMenuElement;
} // namespace dom
} // namespace mozilla
typedef nsMappedAttributeElement nsGenericHTMLElementBase;
/**
* A common superclass for HTML elements
*/
class nsGenericHTMLElement : public nsGenericHTMLElementBase,
public nsIDOMHTMLElement
{
public:
explicit nsGenericHTMLElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
: nsGenericHTMLElementBase(aNodeInfo),
mScrollgrab(false)
{
NS_ASSERTION(mNodeInfo->NamespaceID() == kNameSpaceID_XHTML,
"Unexpected namespace");
AddStatesSilently(NS_EVENT_STATE_LTR);
SetFlags(NODE_HAS_DIRECTION_LTR);
}
NS_DECL_ISUPPORTS_INHERITED
NS_IMPL_FROMCONTENT(nsGenericHTMLElement, kNameSpaceID_XHTML)
// From Element
nsresult CopyInnerTo(mozilla::dom::Element* aDest);
void GetTitle(mozilla::dom::DOMString& aTitle)
{
GetHTMLAttr(nsGkAtoms::title, aTitle);
}
NS_IMETHODIMP SetTitle(const nsAString& aTitle) override
{
SetHTMLAttr(nsGkAtoms::title, aTitle);
return NS_OK;
}
void GetLang(mozilla::dom::DOMString& aLang)
{
GetHTMLAttr(nsGkAtoms::lang, aLang);
}
NS_IMETHODIMP SetLang(const nsAString& aLang) override
{
SetHTMLAttr(nsGkAtoms::lang, aLang);
return NS_OK;
}
void GetDir(mozilla::dom::DOMString& aDir)
{
GetHTMLEnumAttr(nsGkAtoms::dir, aDir);
}
void SetDir(const nsAString& aDir, mozilla::ErrorResult& aError)
{
SetHTMLAttr(nsGkAtoms::dir, aDir, aError);
}
already_AddRefed<nsDOMStringMap> Dataset();
bool ItemScope() const
{
return GetBoolAttr(nsGkAtoms::itemscope);
}
void SetItemScope(bool aItemScope, mozilla::ErrorResult& aError)
{
SetHTMLBoolAttr(nsGkAtoms::itemscope, aItemScope, aError);
}
nsDOMTokenList* ItemType()
{
return GetTokenList(nsGkAtoms::itemtype);
}
void GetItemId(nsString& aItemId)
{
GetHTMLURIAttr(nsGkAtoms::itemid, aItemId);
}
void SetItemId(const nsAString& aItemID, mozilla::ErrorResult& aError)
{
SetHTMLAttr(nsGkAtoms::itemid, aItemID, aError);
}
nsDOMTokenList* ItemRef()
{
return GetTokenList(nsGkAtoms::itemref);
}
nsDOMTokenList* ItemProp()
{
return GetTokenList(nsGkAtoms::itemprop);
}
mozilla::dom::HTMLPropertiesCollection* Properties();
void GetItemValue(JSContext* aCx, JSObject* aScope,
JS::MutableHandle<JS::Value> aRetval,
mozilla::ErrorResult& aError);
void GetItemValue(JSContext* aCx, JS::MutableHandle<JS::Value> aRetval,
mozilla::ErrorResult& aError)
{
GetItemValue(aCx, GetWrapperPreserveColor(), aRetval, aError);
}
void SetItemValue(JSContext* aCx, JS::Value aValue,
mozilla::ErrorResult& aError);
bool Hidden() const
{
return GetBoolAttr(nsGkAtoms::hidden);
}
void SetHidden(bool aHidden, mozilla::ErrorResult& aError)
{
SetHTMLBoolAttr(nsGkAtoms::hidden, aHidden, aError);
}
virtual void Click();
virtual int32_t TabIndexDefault()
{
return -1;
}
int32_t TabIndex()
{
return GetIntAttr(nsGkAtoms::tabindex, TabIndexDefault());
}
void SetTabIndex(int32_t aTabIndex, mozilla::ErrorResult& aError)
{
SetHTMLIntAttr(nsGkAtoms::tabindex, aTabIndex, aError);
}
virtual void Focus(mozilla::ErrorResult& aError);
virtual void Blur(mozilla::ErrorResult& aError);
void GetAccessKey(nsString& aAccessKey)
{
GetHTMLAttr(nsGkAtoms::accesskey, aAccessKey);
}
void SetAccessKey(const nsAString& aAccessKey, mozilla::ErrorResult& aError)
{
SetHTMLAttr(nsGkAtoms::accesskey, aAccessKey, aError);
}
void GetAccessKeyLabel(nsString& aAccessKeyLabel);
virtual bool Draggable() const
{
return AttrValueIs(kNameSpaceID_None, nsGkAtoms::draggable,
nsGkAtoms::_true, eIgnoreCase);
}
void SetDraggable(bool aDraggable, mozilla::ErrorResult& aError)
{
SetHTMLAttr(nsGkAtoms::draggable,
aDraggable ? NS_LITERAL_STRING("true")
: NS_LITERAL_STRING("false"),
aError);
}
void GetContentEditable(nsString& aContentEditable)
{
ContentEditableTristate value = GetContentEditableValue();
if (value == eTrue) {
aContentEditable.AssignLiteral("true");
} else if (value == eFalse) {
aContentEditable.AssignLiteral("false");
} else {
aContentEditable.AssignLiteral("inherit");
}
}
void SetContentEditable(const nsAString& aContentEditable,
mozilla::ErrorResult& aError)
{
if (aContentEditable.LowerCaseEqualsLiteral("inherit")) {
UnsetHTMLAttr(nsGkAtoms::contenteditable, aError);
} else if (aContentEditable.LowerCaseEqualsLiteral("true")) {
SetHTMLAttr(nsGkAtoms::contenteditable, NS_LITERAL_STRING("true"), aError);
} else if (aContentEditable.LowerCaseEqualsLiteral("false")) {
SetHTMLAttr(nsGkAtoms::contenteditable, NS_LITERAL_STRING("false"), aError);
} else {
aError.Throw(NS_ERROR_DOM_SYNTAX_ERR);
}
}
bool IsContentEditable()
{
for (nsIContent* node = this; node; node = node->GetParent()) {
nsGenericHTMLElement* element = FromContent(node);
if (element) {
ContentEditableTristate value = element->GetContentEditableValue();
if (value != eInherit) {
return value == eTrue;
}
}
}
return false;
}
/**
* Returns the count of descendants (inclusive of this node) in
* the uncomposed document that are explicitly set as editable.
*/
uint32_t EditableInclusiveDescendantCount();
mozilla::dom::HTMLMenuElement* GetContextMenu() const;
bool Spellcheck();
void SetSpellcheck(bool aSpellcheck, mozilla::ErrorResult& aError)
{
SetHTMLAttr(nsGkAtoms::spellcheck,
aSpellcheck ? NS_LITERAL_STRING("true")
: NS_LITERAL_STRING("false"),
aError);
}
bool Scrollgrab() const
{
return mScrollgrab;
}
void SetScrollgrab(bool aValue)
{
mScrollgrab = aValue;
}
void GetInnerText(mozilla::dom::DOMString& aValue, mozilla::ErrorResult& aError);
void SetInnerText(const nsAString& aValue);
/**
* Determine whether an attribute is an event (onclick, etc.)
* @param aName the attribute
* @return whether the name is an event handler name
*/
virtual bool IsEventAttributeName(nsIAtom* aName) override;
#define EVENT(name_, id_, type_, struct_) /* nothing; handled by nsINode */
// The using nsINode::Get/SetOn* are to avoid warnings about shadowing the XPCOM
// getter and setter on nsINode.
#define FORWARDED_EVENT(name_, id_, type_, struct_) \
using nsINode::GetOn##name_; \
using nsINode::SetOn##name_; \
mozilla::dom::EventHandlerNonNull* GetOn##name_(); \
void SetOn##name_(mozilla::dom::EventHandlerNonNull* handler);
#define ERROR_EVENT(name_, id_, type_, struct_) \
using nsINode::GetOn##name_; \
using nsINode::SetOn##name_; \
already_AddRefed<mozilla::dom::EventHandlerNonNull> GetOn##name_(); \
void SetOn##name_(mozilla::dom::EventHandlerNonNull* handler);
#include "mozilla/EventNameList.h" // IWYU pragma: keep
#undef ERROR_EVENT
#undef FORWARDED_EVENT
#undef EVENT
mozilla::dom::Element* GetOffsetParent()
{
mozilla::CSSIntRect rcFrame;
return GetOffsetRect(rcFrame);
}
int32_t OffsetTop()
{
mozilla::CSSIntRect rcFrame;
GetOffsetRect(rcFrame);
return rcFrame.y;
}
int32_t OffsetLeft()
{
mozilla::CSSIntRect rcFrame;
GetOffsetRect(rcFrame);
return rcFrame.x;
}
int32_t OffsetWidth()
{
mozilla::CSSIntRect rcFrame;
GetOffsetRect(rcFrame);
return rcFrame.width;
}
int32_t OffsetHeight()
{
mozilla::CSSIntRect rcFrame;
GetOffsetRect(rcFrame);
return rcFrame.height;
}
// These methods are already implemented in nsIContent but we want something
// faster for HTMLElements ignoring the namespace checking.
// This is safe because we already know that we are in the HTML namespace.
inline bool IsHTMLElement() const
{
return true;
}
inline bool IsHTMLElement(nsIAtom* aTag) const
{
return mNodeInfo->Equals(aTag);
}
template<typename First, typename... Args>
inline bool IsAnyOfHTMLElements(First aFirst, Args... aArgs) const
{
return IsNodeInternal(aFirst, aArgs...);
}
protected:
virtual ~nsGenericHTMLElement() {}
// These methods are used to implement element-specific behavior of Get/SetItemValue
// when an element has @itemprop but no @itemscope.
virtual void GetItemValueText(mozilla::dom::DOMString& text);
virtual void SetItemValueText(const nsAString& text);
public:
virtual already_AddRefed<mozilla::dom::UndoManager> GetUndoManager() override;
virtual bool UndoScope() override;
virtual void SetUndoScope(bool aUndoScope, mozilla::ErrorResult& aError) override;
// Callback for destructor of of dataset to ensure to null out weak pointer.
nsresult ClearDataset();
/**
* Get width and height, using given image request if attributes are unset.
* Pass a reference to the image request, since the method may change the
* value and we want to use the updated value.
*/
nsSize GetWidthHeightForImage(RefPtr<imgRequestProxy>& aImageRequest);
// XPIDL methods
NS_FORWARD_NSIDOMNODE_TO_NSINODE
NS_FORWARD_NSIDOMELEMENT_TO_GENERIC
NS_IMETHOD GetTitle(nsAString& aTitle) final override {
mozilla::dom::DOMString title;
GetTitle(title);
title.ToString(aTitle);
return NS_OK;
}
NS_IMETHOD GetLang(nsAString& aLang) final override {
mozilla::dom::DOMString lang;
GetLang(lang);
lang.ToString(aLang);
return NS_OK;
}
NS_IMETHOD GetDir(nsAString& aDir) final override {
mozilla::dom::DOMString dir;
GetDir(dir);
dir.ToString(aDir);
return NS_OK;
}
NS_IMETHOD SetDir(const nsAString& aDir) final override {
mozilla::ErrorResult rv;
SetDir(aDir, rv);
return rv.StealNSResult();
}
NS_IMETHOD GetDOMClassName(nsAString& aClassName) final {
GetHTMLAttr(nsGkAtoms::_class, aClassName);
return NS_OK;
}
NS_IMETHOD SetDOMClassName(const nsAString& aClassName) final {
SetClassName(aClassName);
return NS_OK;
}
NS_IMETHOD GetDataset(nsISupports** aDataset) final override;
NS_IMETHOD GetHidden(bool* aHidden) final override {
*aHidden = Hidden();
return NS_OK;
}
NS_IMETHOD SetHidden(bool aHidden) final override {
mozilla::ErrorResult rv;
SetHidden(aHidden, rv);
return rv.StealNSResult();
}
NS_IMETHOD DOMBlur() final override {
mozilla::ErrorResult rv;
Blur(rv);
return rv.StealNSResult();
}
NS_IMETHOD GetItemScope(bool* aItemScope) final override {
*aItemScope = ItemScope();
return NS_OK;
}
NS_IMETHOD SetItemScope(bool aItemScope) final override {
mozilla::ErrorResult rv;
SetItemScope(aItemScope, rv);
return rv.StealNSResult();
}
NS_IMETHOD GetItemType(nsIVariant** aType) final override {
GetTokenList(nsGkAtoms::itemtype, aType);
return NS_OK;
}
NS_IMETHOD SetItemType(nsIVariant* aType) final override {
return SetTokenList(nsGkAtoms::itemtype, aType);
}
NS_IMETHOD GetItemId(nsAString& aId) final override {
nsString hid;
GetItemId(hid);
aId.Assign(hid);
return NS_OK;
}
NS_IMETHOD SetItemId(const nsAString& aId) final override {
mozilla::ErrorResult rv;
SetItemId(aId, rv);
return rv.StealNSResult();
}
NS_IMETHOD GetProperties(nsISupports** aReturn) final override;
NS_IMETHOD GetItemValue(nsIVariant** aValue) final override;
NS_IMETHOD SetItemValue(nsIVariant* aValue) final override;
NS_IMETHOD GetItemRef(nsIVariant** aRef) final override {
GetTokenList(nsGkAtoms::itemref, aRef);
return NS_OK;
}
NS_IMETHOD SetItemRef(nsIVariant* aRef) final override {
return SetTokenList(nsGkAtoms::itemref, aRef);
}
NS_IMETHOD GetItemProp(nsIVariant** aProp) final override {
GetTokenList(nsGkAtoms::itemprop, aProp);
return NS_OK;
}
NS_IMETHOD SetItemProp(nsIVariant* aProp) final override {
return SetTokenList(nsGkAtoms::itemprop, aProp);
}
NS_IMETHOD GetAccessKey(nsAString& aAccessKey) final override {
nsString accessKey;
GetAccessKey(accessKey);
aAccessKey.Assign(accessKey);
return NS_OK;
}
NS_IMETHOD SetAccessKey(const nsAString& aAccessKey) final override {
mozilla::ErrorResult rv;
SetAccessKey(aAccessKey, rv);
return rv.StealNSResult();
}
NS_IMETHOD GetAccessKeyLabel(nsAString& aAccessKeyLabel)
final override {
nsString accessKeyLabel;
GetAccessKeyLabel(accessKeyLabel);
aAccessKeyLabel.Assign(accessKeyLabel);
return NS_OK;
}
NS_IMETHOD SetDraggable(bool aDraggable) final override {
mozilla::ErrorResult rv;
SetDraggable(aDraggable, rv);
return rv.StealNSResult();
}
NS_IMETHOD GetContentEditable(nsAString& aContentEditable)
final override {
nsString contentEditable;
GetContentEditable(contentEditable);
aContentEditable.Assign(contentEditable);
return NS_OK;
}
NS_IMETHOD SetContentEditable(const nsAString& aContentEditable)
final override {
mozilla::ErrorResult rv;
SetContentEditable(aContentEditable, rv);
return rv.StealNSResult();
}
NS_IMETHOD GetIsContentEditable(bool* aIsContentEditable)
final override {
*aIsContentEditable = IsContentEditable();
return NS_OK;
}
NS_IMETHOD GetContextMenu(nsIDOMHTMLMenuElement** aContextMenu)
final override;
NS_IMETHOD GetSpellcheck(bool* aSpellcheck) final override {
*aSpellcheck = Spellcheck();
return NS_OK;
}
NS_IMETHOD SetSpellcheck(bool aSpellcheck) final override {
mozilla::ErrorResult rv;
SetSpellcheck(aSpellcheck, rv);
return rv.StealNSResult();
}
NS_IMETHOD GetOuterHTML(nsAString& aOuterHTML) final override {
mozilla::dom::Element::GetOuterHTML(aOuterHTML);
return NS_OK;
}
NS_IMETHOD SetOuterHTML(const nsAString& aOuterHTML) final override {
mozilla::ErrorResult rv;
mozilla::dom::Element::SetOuterHTML(aOuterHTML, rv);
return rv.StealNSResult();
}
NS_IMETHOD InsertAdjacentHTML(const nsAString& position,
const nsAString& text) final override;
NS_IMETHOD ScrollIntoView(bool top, uint8_t _argc) final override {
if (!_argc) {
top = true;
}
mozilla::dom::Element::ScrollIntoView(top);
return NS_OK;
}
NS_IMETHOD GetOffsetParent(nsIDOMElement** aOffsetParent)
final override {
mozilla::dom::Element* offsetParent = GetOffsetParent();
if (!offsetParent) {
*aOffsetParent = nullptr;
return NS_OK;
}
return CallQueryInterface(offsetParent, aOffsetParent);
}
NS_IMETHOD GetOffsetTop(int32_t* aOffsetTop) final override {
*aOffsetTop = OffsetTop();
return NS_OK;
}
NS_IMETHOD GetOffsetLeft(int32_t* aOffsetLeft) final override {
*aOffsetLeft = OffsetLeft();
return NS_OK;
}
NS_IMETHOD GetOffsetWidth(int32_t* aOffsetWidth) final override {
*aOffsetWidth = OffsetWidth();
return NS_OK;
}
NS_IMETHOD GetOffsetHeight(int32_t* aOffsetHeight) final override {
*aOffsetHeight = OffsetHeight();
return NS_OK;
}
NS_IMETHOD DOMClick() final override {
Click();
return NS_OK;
}
NS_IMETHOD GetTabIndex(int32_t* aTabIndex) final override {
*aTabIndex = TabIndex();
return NS_OK;
}
NS_IMETHOD SetTabIndex(int32_t aTabIndex) final override {
mozilla::ErrorResult rv;
SetTabIndex(aTabIndex, rv);
return rv.StealNSResult();
}
NS_IMETHOD Focus() final override {
mozilla::ErrorResult rv;
Focus(rv);
return rv.StealNSResult();
}
NS_IMETHOD GetDraggable(bool* aDraggable) final override {
*aDraggable = Draggable();
return NS_OK;
}
NS_IMETHOD GetInnerHTML(nsAString& aInnerHTML) override {
return mozilla::dom::Element::GetInnerHTML(aInnerHTML);
}
using mozilla::dom::Element::SetInnerHTML;
NS_IMETHOD SetInnerHTML(const nsAString& aInnerHTML) final override {
mozilla::ErrorResult rv;
SetInnerHTML(aInnerHTML, rv);
return rv.StealNSResult();
}
using nsGenericHTMLElementBase::GetOwnerDocument;
virtual nsIDOMNode* AsDOMNode() override { return this; }
public:
// Implementation for nsIContent
virtual nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent,
nsIContent* aBindingParent,
bool aCompileEventHandlers) override;
virtual void UnbindFromTree(bool aDeep = true,
bool aNullParent = true) override;
MOZ_ALWAYS_INLINE // Avoid a crashy hook from Avast 10 Beta
nsresult SetAttr(int32_t aNameSpaceID, nsIAtom* aName,
const nsAString& aValue, bool aNotify)
{
return SetAttr(aNameSpaceID, aName, nullptr, aValue, aNotify);
}
virtual nsresult SetAttr(int32_t aNameSpaceID, nsIAtom* aName,
nsIAtom* aPrefix, const nsAString& aValue,
bool aNotify) override;
virtual nsresult UnsetAttr(int32_t aNameSpaceID, nsIAtom* aName,
bool aNotify) override;
virtual bool IsFocusableInternal(int32_t *aTabIndex, bool aWithMouse) override
{
bool isFocusable = false;
IsHTMLFocusable(aWithMouse, &isFocusable, aTabIndex);
return isFocusable;
}
/**
* Returns true if a subclass is not allowed to override the value returned
* in aIsFocusable.
*/
virtual bool IsHTMLFocusable(bool aWithMouse,
bool *aIsFocusable,
int32_t *aTabIndex);
virtual bool PerformAccesskey(bool aKeyCausesActivation,
bool aIsTrustedEvent) override;
/**
* Check if an event for an anchor can be handled
* @return true if the event can be handled, false otherwise
*/
bool CheckHandleEventForAnchorsPreconditions(
mozilla::EventChainVisitor& aVisitor);
nsresult PreHandleEventForAnchors(mozilla::EventChainPreVisitor& aVisitor);
nsresult PostHandleEventForAnchors(mozilla::EventChainPostVisitor& aVisitor);
bool IsHTMLLink(nsIURI** aURI) const;
// HTML element methods
void Compact() { mAttrsAndChildren.Compact(); }
virtual void UpdateEditableState(bool aNotify) override;
virtual mozilla::EventStates IntrinsicState() const override;
// Helper for setting our editable flag and notifying
void DoSetEditableFlag(bool aEditable, bool aNotify) {
SetEditableFlag(aEditable);
UpdateState(aNotify);
}
virtual bool ParseAttribute(int32_t aNamespaceID,
nsIAtom* aAttribute,
const nsAString& aValue,
nsAttrValue& aResult) override;
bool ParseBackgroundAttribute(int32_t aNamespaceID,
nsIAtom* aAttribute,
const nsAString& aValue,
nsAttrValue& aResult);
NS_IMETHOD_(bool) IsAttributeMapped(const nsIAtom* aAttribute) const override;
virtual nsMapRuleToAttributesFunc GetAttributeMappingFunction() const override;
/**
* Get the base target for any links within this piece
* of content. Generally, this is the document's base target,
* but certain content carries a local base for backward
* compatibility.
*
* @param aBaseTarget the base target [OUT]
*/
void GetBaseTarget(nsAString& aBaseTarget) const;
/**
* Get the primary form control frame for this element. Same as
* GetPrimaryFrame(), except it QI's to nsIFormControlFrame.
*
* @param aFlush whether to flush out frames so that they're up to date.
* @return the primary frame as nsIFormControlFrame
*/
nsIFormControlFrame* GetFormControlFrame(bool aFlushFrames);
//----------------------------------------
/**
* Parse an alignment attribute (top/middle/bottom/baseline)
*
* @param aString the string to parse
* @param aResult the resulting HTMLValue
* @return whether the value was parsed
*/
static bool ParseAlignValue(const nsAString& aString,
nsAttrValue& aResult);
/**
* Parse a div align string to value (left/right/center/middle/justify)
*
* @param aString the string to parse
* @param aResult the resulting HTMLValue
* @return whether the value was parsed
*/
static bool ParseDivAlignValue(const nsAString& aString,
nsAttrValue& aResult);
/**
* Convert a table halign string to value (left/right/center/char/justify)
*
* @param aString the string to parse
* @param aResult the resulting HTMLValue
* @return whether the value was parsed
*/
static bool ParseTableHAlignValue(const nsAString& aString,
nsAttrValue& aResult);
/**
* Convert a table cell halign string to value
*
* @param aString the string to parse
* @param aResult the resulting HTMLValue
* @return whether the value was parsed
*/
static bool ParseTableCellHAlignValue(const nsAString& aString,
nsAttrValue& aResult);
/**
* Convert a table valign string to value (left/right/center/char/justify/
* abscenter/absmiddle/middle)
*
* @param aString the string to parse
* @param aResult the resulting HTMLValue
* @return whether the value was parsed
*/
static bool ParseTableVAlignValue(const nsAString& aString,
nsAttrValue& aResult);
/**
* Convert an image attribute to value (width, height, hspace, vspace, border)
*
* @param aAttribute the attribute to parse
* @param aString the string to parse
* @param aResult the resulting HTMLValue
* @return whether the value was parsed
*/
static bool ParseImageAttribute(nsIAtom* aAttribute,
const nsAString& aString,
nsAttrValue& aResult);
static bool ParseReferrerAttribute(const nsAString& aString,
nsAttrValue& aResult);
/**
* Convert a frameborder string to value (yes/no/1/0)
*
* @param aString the string to parse
* @param aResult the resulting HTMLValue
* @return whether the value was parsed
*/
static bool ParseFrameborderValue(const nsAString& aString,
nsAttrValue& aResult);
/**
* Convert a scrolling string to value (yes/no/on/off/scroll/noscroll/auto)
*
* @param aString the string to parse
* @param aResult the resulting HTMLValue
* @return whether the value was parsed
*/
static bool ParseScrollingValue(const nsAString& aString,
nsAttrValue& aResult);
/*
* Attribute Mapping Helpers
*/
/**
* A style attribute mapping function for the most common attributes, to be
* called by subclasses' attribute mapping functions. Currently handles
* dir, lang and hidden, could handle others.
*
* @param aAttributes the list of attributes to map
* @param aData the returned rule data [INOUT]
* @see GetAttributeMappingFunction
*/
static void MapCommonAttributesInto(const nsMappedAttributes* aAttributes,
nsRuleData* aRuleData);
/**
* Same as MapCommonAttributesInto except that it does not handle hidden.
*
* @param aAttributes the list of attributes to map
* @param aData the returned rule data [INOUT]
* @see GetAttributeMappingFunction
*/
static void MapCommonAttributesIntoExceptHidden(const nsMappedAttributes* aAttributes,
nsRuleData* aRuleData);
static const MappedAttributeEntry sCommonAttributeMap[];
static const MappedAttributeEntry sImageMarginSizeAttributeMap[];
static const MappedAttributeEntry sImageBorderAttributeMap[];
static const MappedAttributeEntry sImageAlignAttributeMap[];
static const MappedAttributeEntry sDivAlignAttributeMap[];
static const MappedAttributeEntry sBackgroundAttributeMap[];
static const MappedAttributeEntry sBackgroundColorAttributeMap[];
/**
* Helper to map the align attribute into a style struct.
*
* @param aAttributes the list of attributes to map
* @param aData the returned rule data [INOUT]
* @see GetAttributeMappingFunction
*/
static void MapImageAlignAttributeInto(const nsMappedAttributes* aAttributes,
nsRuleData* aData);
/**
* Helper to map the align attribute into a style struct for things
* like <div>, <h1>, etc.
*
* @param aAttributes the list of attributes to map
* @param aData the returned rule data [INOUT]
* @see GetAttributeMappingFunction
*/
static void MapDivAlignAttributeInto(const nsMappedAttributes* aAttributes,
nsRuleData* aData);
/**
* Helper to map the image border attribute into a style struct.
*
* @param aAttributes the list of attributes to map
* @param aData the returned rule data [INOUT]
* @see GetAttributeMappingFunction
*/
static void MapImageBorderAttributeInto(const nsMappedAttributes* aAttributes,
nsRuleData* aData);
/**
* Helper to map the image margin attribute into a style struct.
*
* @param aAttributes the list of attributes to map
* @param aData the returned rule data [INOUT]
* @see GetAttributeMappingFunction
*/
static void MapImageMarginAttributeInto(const nsMappedAttributes* aAttributes,
nsRuleData* aData);
/**
* Helper to map the image position attribute into a style struct.
*
* @param aAttributes the list of attributes to map
* @param aData the returned rule data [INOUT]
* @see GetAttributeMappingFunction
*/
static void MapImageSizeAttributesInto(const nsMappedAttributes* aAttributes,
nsRuleData* aData);
/**
* Helper to map the background attribute
* into a style struct.
*
* @param aAttributes the list of attributes to map
* @param aData the returned rule data [INOUT]
* @see GetAttributeMappingFunction
*/
static void MapBackgroundInto(const nsMappedAttributes* aAttributes,
nsRuleData* aData);
/**
* Helper to map the bgcolor attribute
* into a style struct.
*
* @param aAttributes the list of attributes to map
* @param aData the returned rule data [INOUT]
* @see GetAttributeMappingFunction
*/
static void MapBGColorInto(const nsMappedAttributes* aAttributes,
nsRuleData* aData);
/**
* Helper to map the background attributes (currently background and bgcolor)
* into a style struct.
*
* @param aAttributes the list of attributes to map
* @param aData the returned rule data [INOUT]
* @see GetAttributeMappingFunction
*/
static void MapBackgroundAttributesInto(const nsMappedAttributes* aAttributes,
nsRuleData* aData);
/**
* Helper to map the scrolling attribute on FRAME and IFRAME
* into a style struct.
*
* @param aAttributes the list of attributes to map
* @param aData the returned rule data [INOUT]
* @see GetAttributeMappingFunction
*/
static void MapScrollingAttributeInto(const nsMappedAttributes* aAttributes,
nsRuleData* aData);
/**
* Get the presentation context for this content node.
* @return the presentation context
*/
enum PresContextFor
{
eForComposedDoc,
eForUncomposedDoc
};
nsPresContext* GetPresContext(PresContextFor aFor);
// Form Helper Routines
/**
* Find an ancestor of this content node which is a form (could be null)
* @param aCurrentForm the current form for this node. If this is
* non-null, and no ancestor form is found, and the current form is in
* a connected subtree with the node, the current form will be
* returned. This is needed to handle cases when HTML elements have a
* current form that they're not descendants of.
* @note This method should not be called if the element has a form attribute.
*/
mozilla::dom::HTMLFormElement*
FindAncestorForm(mozilla::dom::HTMLFormElement* aCurrentForm = nullptr);
virtual void RecompileScriptEventListeners() override;
/**
* See if the document being tested has nav-quirks mode enabled.
* @param doc the document
*/
static bool InNavQuirksMode(nsIDocument* aDoc);
/**
* Locate an nsIEditor rooted at this content node, if there is one.
*/
nsresult GetEditor(nsIEditor** aEditor);
/**
* Helper method for NS_IMPL_URI_ATTR macro.
* Gets the absolute URI value of an attribute, by resolving any relative
* URIs in the attribute against the baseuri of the element. If the attribute
* isn't a relative URI the value of the attribute is returned as is. Only
* works for attributes in null namespace.
*
* @param aAttr name of attribute.
* @param aBaseAttr name of base attribute.
* @param aResult result value [out]
*/
void GetURIAttr(nsIAtom* aAttr, nsIAtom* aBaseAttr, nsAString& aResult) const;
/**
* Gets the absolute URI values of an attribute, by resolving any relative
* URIs in the attribute against the baseuri of the element. If a substring
* isn't a relative URI, the substring is returned as is. Only works for
* attributes in null namespace.
*/
bool GetURIAttr(nsIAtom* aAttr, nsIAtom* aBaseAttr, nsIURI** aURI) const;
/**
* Returns the current disabled state of the element.
*/
virtual bool IsDisabled() const {
return false;
}
bool IsHidden() const
{
return HasAttr(kNameSpaceID_None, nsGkAtoms::hidden);
}
virtual bool IsLabelable() const override;
virtual bool IsInteractiveHTMLContent(bool aIgnoreTabindex) const override;
static bool TouchEventsEnabled(JSContext* /* unused */, JSObject* /* unused */);
static inline bool
CanHaveName(nsIAtom* aTag)
{
return aTag == nsGkAtoms::img ||
aTag == nsGkAtoms::form ||
aTag == nsGkAtoms::applet ||
aTag == nsGkAtoms::embed ||
aTag == nsGkAtoms::object;
}
static inline bool
ShouldExposeNameAsHTMLDocumentProperty(Element* aElement)
{
return aElement->IsHTMLElement() &&
CanHaveName(aElement->NodeInfo()->NameAtom());
}
static inline bool
ShouldExposeIdAsHTMLDocumentProperty(Element* aElement)
{
if (aElement->IsAnyOfHTMLElements(nsGkAtoms::applet,
nsGkAtoms::embed,
nsGkAtoms::object)) {
return true;
}
// Per spec, <img> is exposed by id only if it also has a nonempty
// name (which doesn't have to match the id or anything).
// HasName() is true precisely when name is nonempty.
return aElement->IsHTMLElement(nsGkAtoms::img) && aElement->HasName();
}
static bool
IsScrollGrabAllowed(JSContext*, JSObject*);
protected:
/**
* Add/remove this element to the documents name cache
*/
void AddToNameTable(nsIAtom* aName) {
NS_ASSERTION(HasName(), "Node doesn't have name?");
nsIDocument* doc = GetCurrentDoc();
if (doc && !IsInAnonymousSubtree()) {
doc->AddToNameTable(this, aName);
}
}
void RemoveFromNameTable() {
if (HasName()) {
nsIDocument* doc = GetCurrentDoc();
if (doc) {
doc->RemoveFromNameTable(this, GetParsedAttr(nsGkAtoms::name)->
GetAtomValue());
}
}
}
/**
* Register or unregister an access key to this element based on the
* accesskey attribute.
*/
void RegAccessKey()
{
if (HasFlag(NODE_HAS_ACCESSKEY)) {
RegUnRegAccessKey(true);
}
}
void UnregAccessKey()
{
if (HasFlag(NODE_HAS_ACCESSKEY)) {
RegUnRegAccessKey(false);
}
}
private:
void RegUnRegAccessKey(bool aDoReg);
protected:
virtual nsresult AfterSetAttr(int32_t aNamespaceID, nsIAtom* aName,
const nsAttrValue* aValue, bool aNotify) override;
virtual mozilla::EventListenerManager*
GetEventListenerManagerForAttr(nsIAtom* aAttrName,
bool* aDefer) override;
/**
* Create a URI for the given aURISpec string.
* Returns INVALID_STATE_ERR and nulls *aURI if aURISpec is empty
* and the document's URI matches the element's base URI.
*/
nsresult NewURIFromString(const nsAString& aURISpec, nsIURI** aURI);
void GetHTMLAttr(nsIAtom* aName, nsAString& aResult) const
{
GetAttr(kNameSpaceID_None, aName, aResult);
}
void GetHTMLAttr(nsIAtom* aName, mozilla::dom::DOMString& aResult) const
{
GetAttr(kNameSpaceID_None, aName, aResult);
}
void GetHTMLEnumAttr(nsIAtom* aName, nsAString& aResult) const
{
GetEnumAttr(aName, nullptr, aResult);
}
void GetHTMLURIAttr(nsIAtom* aName, nsAString& aResult) const
{
GetURIAttr(aName, nullptr, aResult);
}
void SetHTMLAttr(nsIAtom* aName, const nsAString& aValue)
{
SetAttr(kNameSpaceID_None, aName, aValue, true);
}
void SetHTMLAttr(nsIAtom* aName, const nsAString& aValue, mozilla::ErrorResult& aError)
{
mozilla::dom::Element::SetAttr(aName, aValue, aError);
}
void UnsetHTMLAttr(nsIAtom* aName, mozilla::ErrorResult& aError)
{
mozilla::dom::Element::UnsetAttr(aName, aError);
}
void SetHTMLBoolAttr(nsIAtom* aName, bool aValue, mozilla::ErrorResult& aError)
{
if (aValue) {
SetHTMLAttr(aName, EmptyString(), aError);
} else {
UnsetHTMLAttr(aName, aError);
}
}
void SetHTMLIntAttr(nsIAtom* aName, int32_t aValue, mozilla::ErrorResult& aError)
{
nsAutoString value;
value.AppendInt(aValue);
SetHTMLAttr(aName, value, aError);
}
/**
* Helper method for NS_IMPL_STRING_ATTR macro.
* Sets the value of an attribute, returns specified default value if the
* attribute isn't set. Only works for attributes in null namespace.
*
* @param aAttr name of attribute.
* @param aDefault default-value to return if attribute isn't set.
* @param aResult result value [out]
*/
nsresult SetAttrHelper(nsIAtom* aAttr, const nsAString& aValue);
/**
* Helper method for NS_IMPL_INT_ATTR macro.
* Gets the integer-value of an attribute, returns specified default value
* if the attribute isn't set or isn't set to an integer. Only works for
* attributes in null namespace.
*
* @param aAttr name of attribute.
* @param aDefault default-value to return if attribute isn't set.
*/
int32_t GetIntAttr(nsIAtom* aAttr, int32_t aDefault) const;
/**
* Helper method for NS_IMPL_INT_ATTR macro.
* Sets value of attribute to specified integer. Only works for attributes
* in null namespace.
*
* @param aAttr name of attribute.
* @param aValue Integer value of attribute.
*/
nsresult SetIntAttr(nsIAtom* aAttr, int32_t aValue);
/**
* Helper method for NS_IMPL_UINT_ATTR macro.
* Gets the unsigned integer-value of an attribute, returns specified default
* value if the attribute isn't set or isn't set to an integer. Only works for
* attributes in null namespace.
*
* @param aAttr name of attribute.
* @param aDefault default-value to return if attribute isn't set.
*/
uint32_t GetUnsignedIntAttr(nsIAtom* aAttr, uint32_t aDefault) const;
/**
* Helper method for NS_IMPL_UINT_ATTR macro.
* Sets value of attribute to specified unsigned integer. Only works for
* attributes in null namespace.
*
* @param aAttr name of attribute.
* @param aValue Integer value of attribute.
*/
void SetUnsignedIntAttr(nsIAtom* aName, uint32_t aValue,
mozilla::ErrorResult& aError)
{
nsAutoString value;
value.AppendInt(aValue);
SetHTMLAttr(aName, value, aError);
}
/**
* Sets value of attribute to specified double. Only works for attributes
* in null namespace.
*
* @param aAttr name of attribute.
* @param aValue Double value of attribute.
*/
void SetDoubleAttr(nsIAtom* aAttr, double aValue, mozilla::ErrorResult& aRv)
{
nsAutoString value;
value.AppendFloat(aValue);
SetHTMLAttr(aAttr, value, aRv);
}
/**
* This method works like GetURIAttr, except that it supports multiple
* URIs separated by whitespace (one or more U+0020 SPACE characters).
*
* Gets the absolute URI values of an attribute, by resolving any relative
* URIs in the attribute against the baseuri of the element. If a substring
* isn't a relative URI, the substring is returned as is. Only works for
* attributes in null namespace.
*
* @param aAttr name of attribute.
* @param aResult result value [out]
*/
nsresult GetURIListAttr(nsIAtom* aAttr, nsAString& aResult);
/**
* Locates the nsIEditor associated with this node. In general this is
* equivalent to GetEditorInternal(), but for designmode or contenteditable,
* this may need to get an editor that's not actually on this element's
* associated TextControlFrame. This is used by the spellchecking routines
* to get the editor affected by changing the spellcheck attribute on this
* node.
*/
virtual already_AddRefed<nsIEditor> GetAssociatedEditor();
/**
* Get the frame's offset information for offsetTop/Left/Width/Height.
* Returns the parent the offset is relative to.
* @note This method flushes pending notifications (Flush_Layout).
* @param aRect the offset information [OUT]
*/
mozilla::dom::Element* GetOffsetRect(mozilla::CSSIntRect& aRect);
/**
* Returns true if this is the current document's body element
*/
bool IsCurrentBodyElement();
/**
* Ensures all editors associated with a subtree are synced, for purposes of
* spellchecking.
*/
static void SyncEditorsOnSubtree(nsIContent* content);
enum ContentEditableTristate {
eInherit = -1,
eFalse = 0,
eTrue = 1
};
/**
* Returns eTrue if the element has a contentEditable attribute and its value
* is "true" or an empty string. Returns eFalse if the element has a
* contentEditable attribute and its value is "false". Otherwise returns
* eInherit.
*/
ContentEditableTristate GetContentEditableValue() const
{
static const nsIContent::AttrValuesArray values[] =
{ &nsGkAtoms::_false, &nsGkAtoms::_true, &nsGkAtoms::_empty, nullptr };
if (!MayHaveContentEditableAttr())
return eInherit;
int32_t value = FindAttrValueIn(kNameSpaceID_None,
nsGkAtoms::contenteditable, values,
eIgnoreCase);
return value > 0 ? eTrue : (value == 0 ? eFalse : eInherit);
}
// Used by A, AREA, LINK, and STYLE.
already_AddRefed<nsIURI> GetHrefURIForAnchors() const;
/**
* Returns whether this element is an editable root. There are two types of
* editable roots:
* 1) the documentElement if the whole document is editable (for example for
* desginMode=on)
* 2) an element that is marked editable with contentEditable=true and that
* doesn't have a parent or whose parent is not editable.
* Note that this doesn't return input and textarea elements that haven't been
* made editable through contentEditable or designMode.
*/
bool IsEditableRoot() const;
nsresult SetUndoScopeInternal(bool aUndoScope);
private:
void ChangeEditableState(int32_t aChange);
bool mScrollgrab;
};
namespace mozilla {
namespace dom {
class HTMLFieldSetElement;
} // namespace dom
} // namespace mozilla
#define FORM_ELEMENT_FLAG_BIT(n_) NODE_FLAG_BIT(ELEMENT_TYPE_SPECIFIC_BITS_OFFSET + (n_))
// Form element specific bits
enum {
// If this flag is set on an nsGenericHTMLFormElement or an HTMLImageElement,
// that means that we have added ourselves to our mForm. It's possible to
// have a non-null mForm, but not have this flag set. That happens when the
// form is set via the content sink.
ADDED_TO_FORM = FORM_ELEMENT_FLAG_BIT(0),
// If this flag is set on an nsGenericHTMLFormElement or an HTMLImageElement,
// that means that its form is in the process of being unbound from the tree,
// and this form element hasn't re-found its form in
// nsGenericHTMLFormElement::UnbindFromTree yet.
MAYBE_ORPHAN_FORM_ELEMENT = FORM_ELEMENT_FLAG_BIT(1)
};
// NOTE: I don't think it's possible to have the above two flags set at the
// same time, so if it becomes an issue we can probably merge them into the
// same bit. --bz
ASSERT_NODE_FLAGS_SPACE(ELEMENT_TYPE_SPECIFIC_BITS_OFFSET + 2);
#undef FORM_ELEMENT_FLAG_BIT
/**
* A helper class for form elements that can contain children
*/
class nsGenericHTMLFormElement : public nsGenericHTMLElement,
public nsIFormControl
{
public:
explicit nsGenericHTMLFormElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo);
NS_DECL_ISUPPORTS_INHERITED
nsINode* GetScopeChainParent() const override;
virtual bool IsNodeOfType(uint32_t aFlags) const override;
virtual void SaveSubtreeState() override;
// nsIFormControl
virtual mozilla::dom::HTMLFieldSetElement* GetFieldSet() override;
virtual mozilla::dom::Element* GetFormElement() override;
mozilla::dom::HTMLFormElement* GetForm() const
{
return mForm;
}
virtual void SetForm(nsIDOMHTMLFormElement* aForm) override;
virtual void ClearForm(bool aRemoveFromForm) override;
nsresult GetForm(nsIDOMHTMLFormElement** aForm);
NS_IMETHOD SaveState() override
{
return NS_OK;
}
virtual bool RestoreState(nsPresState* aState) override
{
return false;
}
virtual bool AllowDrop() override
{
return true;
}
// nsIContent
virtual nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent,
nsIContent* aBindingParent,
bool aCompileEventHandlers) override;
virtual void UnbindFromTree(bool aDeep = true,
bool aNullParent = true) override;
virtual IMEState GetDesiredIMEState() override;
virtual mozilla::EventStates IntrinsicState() const override;
virtual nsresult PreHandleEvent(
mozilla::EventChainPreVisitor& aVisitor) override;
virtual bool IsDisabled() const override;
/**
* This callback is called by a fieldest on all its elements whenever its
* disabled attribute is changed so the element knows its disabled state
* might have changed.
*
* @note Classes redefining this method should not do any content
* state updates themselves but should just make sure to call into
* nsGenericHTMLFormElement::FieldSetDisabledChanged.
*/
virtual void FieldSetDisabledChanged(bool aNotify);
/**
* Check our disabled content attribute and fieldset's (if it exists) disabled
* state to decide whether our disabled flag should be toggled.
*/
void UpdateDisabledState(bool aNotify);
/**
* Update our required/optional flags to match the given aIsRequired boolean.
*/
void UpdateRequiredState(bool aIsRequired, bool aNotify);
void FieldSetFirstLegendChanged(bool aNotify) {
UpdateFieldSet(aNotify);
}
/**
* This callback is called by a fieldset on all it's elements when it's being
* destroyed. When called, the elements should check that aFieldset is there
* first parent fieldset and null mFieldset in that case only.
*
* @param aFieldSet The fieldset being removed.
*/
void ForgetFieldSet(nsIContent* aFieldset);
/**
* Returns if the control can be disabled.
*/
bool CanBeDisabled() const;
virtual bool IsHTMLFocusable(bool aWithMouse, bool* aIsFocusable,
int32_t* aTabIndex) override;
virtual bool IsLabelable() const override;
protected:
virtual ~nsGenericHTMLFormElement();
virtual nsresult BeforeSetAttr(int32_t aNameSpaceID, nsIAtom* aName,
nsAttrValueOrString* aValue,
bool aNotify) override;
virtual nsresult AfterSetAttr(int32_t aNameSpaceID, nsIAtom* aName,
const nsAttrValue* aValue, bool aNotify) override;
/**
* This method will update the form owner, using @form or looking to a parent.
*
* @param aBindToTree Whether the element is being attached to the tree.
* @param aFormIdElement The element associated with the id in @form. If
* aBindToTree is false, aFormIdElement *must* contain the element associated
* with the id in @form. Otherwise, it *must* be null.
*
* @note Callers of UpdateFormOwner have to be sure the element is in a
* document (GetCurrentDoc() != nullptr).
*/
void UpdateFormOwner(bool aBindToTree, Element* aFormIdElement);
/**
* This method will update mFieldset and set it to the first fieldset parent.
*/
void UpdateFieldSet(bool aNotify);
/**
* Add a form id observer which will observe when the element with the id in
* @form will change.
*
* @return The element associated with the current id in @form (may be null).
*/
Element* AddFormIdObserver();
/**
* Remove the form id observer.
*/
void RemoveFormIdObserver();
/**
* This method is a a callback for IDTargetObserver (from nsIDocument).
* It will be called each time the element associated with the id in @form
* changes.
*/
static bool FormIdUpdated(Element* aOldElement, Element* aNewElement,
void* aData);
// Returns true if the event should not be handled from PreHandleEvent
bool IsElementDisabledForEvents(mozilla::EventMessage aMessage,
nsIFrame* aFrame);
// The focusability state of this form control. eUnfocusable means that it
// shouldn't be focused at all, eInactiveWindow means it's in an inactive
// window, eActiveWindow means it's in an active window.
enum FocusTristate {
eUnfocusable,
eInactiveWindow,
eActiveWindow
};
// Get our focus state. If this returns eInactiveWindow, it will set this
// element as the focused element for that window.
FocusTristate FocusState();
/** The form that contains this control */
mozilla::dom::HTMLFormElement* mForm;
/* This is a pointer to our closest fieldset parent if any */
mozilla::dom::HTMLFieldSetElement* mFieldSet;
};
class nsGenericHTMLFormElementWithState : public nsGenericHTMLFormElement
{
public:
explicit nsGenericHTMLFormElementWithState(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo);
/**
* Get the presentation state for a piece of content, or create it if it does
* not exist. Generally used by SaveState().
*/
nsPresState* GetPrimaryPresState();
/**
* Get the layout history object for a particular piece of content.
*
* @param aRead if true, won't return a layout history state if the
* layout history state is empty.
* @return the history state object
*/
already_AddRefed<nsILayoutHistoryState>
GetLayoutHistory(bool aRead);
/**
* Restore the state for a form control. Ends up calling
* nsIFormControl::RestoreState().
*
* @return false if RestoreState() was not called, the return
* value of RestoreState() otherwise.
*/
bool RestoreFormControlState();
/**
* Called when we have been cloned and adopted, and the information of the
* node has been changed.
*/
virtual void NodeInfoChanged(mozilla::dom::NodeInfo* aOldNodeInfo) override;
protected:
/* Generates the state key for saving the form state in the session if not
computed already. The result is stored in mStateKey on success */
nsresult GenerateStateKey();
/* Used to store the key to that element in the session. Is void until
GenerateStateKey has been used */
nsCString mStateKey;
};
//----------------------------------------------------------------------
/**
* This macro is similar to NS_IMPL_STRING_ATTR except that the getter method
* falls back to an alternative method if the content attribute isn't set.
*/
#define NS_IMPL_STRING_ATTR_WITH_FALLBACK(_class, _method, _atom, _fallback) \
NS_IMETHODIMP \
_class::Get##_method(nsAString& aValue) \
{ \
if (!GetAttr(kNameSpaceID_None, nsGkAtoms::_atom, aValue)) { \
_fallback(aValue); \
} \
return NS_OK; \
} \
NS_IMETHODIMP \
_class::Set##_method(const nsAString& aValue) \
{ \
return SetAttrHelper(nsGkAtoms::_atom, aValue); \
}
/**
* A macro to implement the getter and setter for a given integer
* valued content property. The method uses the generic GetAttr and
* SetAttr methods.
*/
#define NS_IMPL_INT_ATTR(_class, _method, _atom) \
NS_IMPL_INT_ATTR_DEFAULT_VALUE(_class, _method, _atom, 0)
#define NS_IMPL_INT_ATTR_DEFAULT_VALUE(_class, _method, _atom, _default) \
NS_IMETHODIMP \
_class::Get##_method(int32_t* aValue) \
{ \
*aValue = GetIntAttr(nsGkAtoms::_atom, _default); \
return NS_OK; \
} \
NS_IMETHODIMP \
_class::Set##_method(int32_t aValue) \
{ \
return SetIntAttr(nsGkAtoms::_atom, aValue); \
}
/**
* A macro to implement the getter and setter for a given unsigned integer
* valued content property. The method uses GetUnsignedIntAttr and
* SetUnsignedIntAttr methods.
*/
#define NS_IMPL_UINT_ATTR(_class, _method, _atom) \
NS_IMPL_UINT_ATTR_DEFAULT_VALUE(_class, _method, _atom, 0)
#define NS_IMPL_UINT_ATTR_DEFAULT_VALUE(_class, _method, _atom, _default) \
NS_IMETHODIMP \
_class::Get##_method(uint32_t* aValue) \
{ \
*aValue = GetUnsignedIntAttr(nsGkAtoms::_atom, _default); \
return NS_OK; \
} \
NS_IMETHODIMP \
_class::Set##_method(uint32_t aValue) \
{ \
mozilla::ErrorResult rv; \
SetUnsignedIntAttr(nsGkAtoms::_atom, aValue, rv); \
return rv.StealNSResult(); \
}
/**
* A macro to implement the getter and setter for a given unsigned integer
* valued content property. The method uses GetUnsignedIntAttr and
* SetUnsignedIntAttr methods. This macro is similar to NS_IMPL_UINT_ATTR except
* that it throws an exception if the set value is null.
*/
#define NS_IMPL_UINT_ATTR_NON_ZERO(_class, _method, _atom) \
NS_IMPL_UINT_ATTR_NON_ZERO_DEFAULT_VALUE(_class, _method, _atom, 1)
#define NS_IMPL_UINT_ATTR_NON_ZERO_DEFAULT_VALUE(_class, _method, _atom, _default) \
NS_IMETHODIMP \
_class::Get##_method(uint32_t* aValue) \
{ \
*aValue = GetUnsignedIntAttr(nsGkAtoms::_atom, _default); \
return NS_OK; \
} \
NS_IMETHODIMP \
_class::Set##_method(uint32_t aValue) \
{ \
if (aValue == 0) { \
return NS_ERROR_DOM_INDEX_SIZE_ERR; \
} \
mozilla::ErrorResult rv; \
SetUnsignedIntAttr(nsGkAtoms::_atom, aValue, rv); \
return rv.StealNSResult(); \
}
/**
* A macro to implement the getter and setter for a given content
* property that needs to return a URI in string form. The method
* uses the generic GetAttr and SetAttr methods. This macro is much
* like the NS_IMPL_STRING_ATTR macro, except we make sure the URI is
* absolute.
*/
#define NS_IMPL_URI_ATTR(_class, _method, _atom) \
NS_IMETHODIMP \
_class::Get##_method(nsAString& aValue) \
{ \
GetURIAttr(nsGkAtoms::_atom, nullptr, aValue); \
return NS_OK; \
} \
NS_IMETHODIMP \
_class::Set##_method(const nsAString& aValue) \
{ \
return SetAttrHelper(nsGkAtoms::_atom, aValue); \
}
#define NS_IMPL_URI_ATTR_WITH_BASE(_class, _method, _atom, _base_atom) \
NS_IMETHODIMP \
_class::Get##_method(nsAString& aValue) \
{ \
GetURIAttr(nsGkAtoms::_atom, nsGkAtoms::_base_atom, aValue); \
return NS_OK; \
} \
NS_IMETHODIMP \
_class::Set##_method(const nsAString& aValue) \
{ \
return SetAttrHelper(nsGkAtoms::_atom, aValue); \
}
/**
* A macro to implement getter and setter for action and form action content
* attributes. It's very similar to NS_IMPL_URI_ATTR excepted that if the
* content attribute is the empty string, the empty string is returned.
*/
#define NS_IMPL_ACTION_ATTR(_class, _method, _atom) \
NS_IMETHODIMP \
_class::Get##_method(nsAString& aValue) \
{ \
GetAttr(kNameSpaceID_None, nsGkAtoms::_atom, aValue); \
if (!aValue.IsEmpty()) { \
GetURIAttr(nsGkAtoms::_atom, nullptr, aValue); \
} \
return NS_OK; \
} \
NS_IMETHODIMP \
_class::Set##_method(const nsAString& aValue) \
{ \
return SetAttrHelper(nsGkAtoms::_atom, aValue); \
}
/**
* A macro to implement the getter and setter for a given content
* property that needs to set a non-negative integer. The method
* uses the generic GetAttr and SetAttr methods. This macro is much
* like the NS_IMPL_INT_ATTR macro except we throw an exception if
* the set value is negative.
*/
#define NS_IMPL_NON_NEGATIVE_INT_ATTR(_class, _method, _atom) \
NS_IMPL_NON_NEGATIVE_INT_ATTR_DEFAULT_VALUE(_class, _method, _atom, -1)
#define NS_IMPL_NON_NEGATIVE_INT_ATTR_DEFAULT_VALUE(_class, _method, _atom, _default) \
NS_IMETHODIMP \
_class::Get##_method(int32_t* aValue) \
{ \
*aValue = GetIntAttr(nsGkAtoms::_atom, _default); \
return NS_OK; \
} \
NS_IMETHODIMP \
_class::Set##_method(int32_t aValue) \
{ \
if (aValue < 0) { \
return NS_ERROR_DOM_INDEX_SIZE_ERR; \
} \
return SetIntAttr(nsGkAtoms::_atom, aValue); \
}
/**
* A macro to implement the getter and setter for a given content
* property that needs to set an enumerated string. The method
* uses a specific GetEnumAttr and the generic SetAttrHelper methods.
*/
#define NS_IMPL_ENUM_ATTR_DEFAULT_VALUE(_class, _method, _atom, _default) \
NS_IMETHODIMP \
_class::Get##_method(nsAString& aValue) \
{ \
GetEnumAttr(nsGkAtoms::_atom, _default, aValue); \
return NS_OK; \
} \
NS_IMETHODIMP \
_class::Set##_method(const nsAString& aValue) \
{ \
return SetAttrHelper(nsGkAtoms::_atom, aValue); \
}
/**
* A macro to implement the getter and setter for a given content
* property that needs to set an enumerated string that has different
* default values for missing and invalid values. The method uses a
* specific GetEnumAttr and the generic SetAttrHelper methods.
*/
#define NS_IMPL_ENUM_ATTR_DEFAULT_MISSING_INVALID_VALUES(_class, _method, _atom, _defaultMissing, _defaultInvalid) \
NS_IMETHODIMP \
_class::Get##_method(nsAString& aValue) \
{ \
GetEnumAttr(nsGkAtoms::_atom, _defaultMissing, _defaultInvalid, aValue); \
return NS_OK; \
} \
NS_IMETHODIMP \
_class::Set##_method(const nsAString& aValue) \
{ \
return SetAttrHelper(nsGkAtoms::_atom, aValue); \
}
#define NS_INTERFACE_MAP_ENTRY_IF_TAG(_interface, _tag) \
NS_INTERFACE_MAP_ENTRY_CONDITIONAL(_interface, \
mNodeInfo->Equals(nsGkAtoms::_tag))
/**
* A macro to declare the NS_NewHTMLXXXElement() functions.
*/
#define NS_DECLARE_NS_NEW_HTML_ELEMENT(_elementName) \
namespace mozilla { \
namespace dom { \
class HTML##_elementName##Element; \
} \
} \
nsGenericHTMLElement* \
NS_NewHTML##_elementName##Element(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo, \
mozilla::dom::FromParser aFromParser = mozilla::dom::NOT_FROM_PARSER);
#define NS_DECLARE_NS_NEW_HTML_ELEMENT_AS_SHARED(_elementName) \
inline nsGenericHTMLElement* \
NS_NewHTML##_elementName##Element(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo, \
mozilla::dom::FromParser aFromParser = mozilla::dom::NOT_FROM_PARSER) \
{ \
return NS_NewHTMLSharedElement(mozilla::Move(aNodeInfo), aFromParser); \
}
/**
* A macro to implement the NS_NewHTMLXXXElement() functions.
*/
#define NS_IMPL_NS_NEW_HTML_ELEMENT(_elementName) \
nsGenericHTMLElement* \
NS_NewHTML##_elementName##Element(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo, \
mozilla::dom::FromParser aFromParser) \
{ \
return new mozilla::dom::HTML##_elementName##Element(aNodeInfo); \
}
#define NS_IMPL_NS_NEW_HTML_ELEMENT_CHECK_PARSER(_elementName) \
nsGenericHTMLElement* \
NS_NewHTML##_elementName##Element(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo, \
mozilla::dom::FromParser aFromParser) \
{ \
return new mozilla::dom::HTML##_elementName##Element(aNodeInfo, \
aFromParser); \
}
// Here, we expand 'NS_DECLARE_NS_NEW_HTML_ELEMENT()' by hand.
// (Calling the macro directly (with no args) produces compiler warnings.)
nsGenericHTMLElement*
NS_NewHTMLElement(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
mozilla::dom::FromParser aFromParser = mozilla::dom::NOT_FROM_PARSER);
NS_DECLARE_NS_NEW_HTML_ELEMENT(Shared)
NS_DECLARE_NS_NEW_HTML_ELEMENT(SharedList)
NS_DECLARE_NS_NEW_HTML_ELEMENT(SharedObject)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Anchor)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Area)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Audio)
NS_DECLARE_NS_NEW_HTML_ELEMENT(BR)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Body)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Button)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Canvas)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Content)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Mod)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Data)
NS_DECLARE_NS_NEW_HTML_ELEMENT(DataList)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Div)
NS_DECLARE_NS_NEW_HTML_ELEMENT(ExtApp)
NS_DECLARE_NS_NEW_HTML_ELEMENT(FieldSet)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Font)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Form)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Frame)
NS_DECLARE_NS_NEW_HTML_ELEMENT(FrameSet)
NS_DECLARE_NS_NEW_HTML_ELEMENT(HR)
NS_DECLARE_NS_NEW_HTML_ELEMENT_AS_SHARED(Head)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Heading)
NS_DECLARE_NS_NEW_HTML_ELEMENT_AS_SHARED(Html)
NS_DECLARE_NS_NEW_HTML_ELEMENT(IFrame)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Image)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Input)
NS_DECLARE_NS_NEW_HTML_ELEMENT(LI)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Label)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Legend)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Link)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Map)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Menu)
NS_DECLARE_NS_NEW_HTML_ELEMENT(MenuItem)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Meta)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Meter)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Object)
NS_DECLARE_NS_NEW_HTML_ELEMENT(OptGroup)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Option)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Output)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Paragraph)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Picture)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Pre)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Progress)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Script)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Select)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Shadow)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Source)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Span)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Style)
NS_DECLARE_NS_NEW_HTML_ELEMENT(TableCaption)
NS_DECLARE_NS_NEW_HTML_ELEMENT(TableCell)
NS_DECLARE_NS_NEW_HTML_ELEMENT(TableCol)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Table)
NS_DECLARE_NS_NEW_HTML_ELEMENT(TableRow)
NS_DECLARE_NS_NEW_HTML_ELEMENT(TableSection)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Tbody)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Template)
NS_DECLARE_NS_NEW_HTML_ELEMENT(TextArea)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Tfoot)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Thead)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Time)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Title)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Track)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Unknown)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Video)
inline nsISupports*
ToSupports(nsGenericHTMLElement* aHTMLElement)
{
return static_cast<nsIContent*>(aHTMLElement);
}
inline nsISupports*
ToCanonicalSupports(nsGenericHTMLElement* aHTMLElement)
{
return static_cast<nsIContent*>(aHTMLElement);
}
#endif /* nsGenericHTMLElement_h___ */
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