Mozilla/mozilla/layout/html/content/src/nsGenericHTMLElement.h

741 lines
35 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is Netscape Communications
* Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
#ifndef nsGenericHTMLElement_h___
#define nsGenericHTMLElement_h___
#include "nsGenericElement.h"
#include "nsHTMLParts.h"
#include "nsIDOMHTMLElement.h"
#include "nsIContent.h"
#include "nsHTMLValue.h"
#include "nsVoidArray.h"
#include "nsIJSScriptObject.h"
#include "nsINameSpaceManager.h" // for kNameSpaceID_HTML
#include "nsIFormControl.h"
#include "nsIStatefulFrame.h"
class nsIDOMAttr;
class nsIDOMEventListener;
class nsIDOMNodeList;
class nsIEventListenerManager;
class nsIFrame;
class nsIHTMLAttributes;
class nsIHTMLMappedAttributes;
class nsIHTMLContent;
class nsIMutableStyleContext;
class nsIStyleRule;
class nsISupportsArray;
class nsIDOMScriptObjectFactory;
class nsChildContentList;
class nsDOMCSSDeclaration;
class nsIDOMCSSStyleDeclaration;
class nsIURI;
class nsIFormControlFrame;
class nsIForm;
class nsIPresState;
class nsGenericHTMLElement : public nsGenericElement {
public:
nsGenericHTMLElement();
virtual ~nsGenericHTMLElement();
NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr);
static nsresult DOMQueryInterface(nsIDOMHTMLElement *aElement,
REFNSIID aIID, void **aInstancePtr);
NS_METHOD CopyInnerTo(nsIContent* aSrcContent,
nsGenericHTMLElement* aDest,
PRBool aDeep);
// Implementation for nsIDOMNode
NS_METHOD GetNodeName(nsAWritableString& aNodeName);
NS_METHOD GetLocalName(nsAWritableString& aLocalName);
// Implementation for nsIDOMElement
NS_METHOD GetAttribute(const nsAReadableString& aName,
nsAWritableString& aReturn)
{
return nsGenericElement::GetAttribute(aName, aReturn);
}
NS_METHOD SetAttribute(const nsAReadableString& aName,
const nsAReadableString& aValue)
{
return nsGenericElement::SetAttribute(aName, aValue);
}
NS_METHOD GetTagName(nsAWritableString& aTagName);
NS_METHOD GetElementsByTagName(const nsAReadableString& aTagname,
nsIDOMNodeList** aReturn);
// Implementation for nsIDOMHTMLElement
NS_METHOD GetId(nsAWritableString& aId);
NS_METHOD SetId(const nsAReadableString& aId);
NS_METHOD GetTitle(nsAWritableString& aTitle);
NS_METHOD SetTitle(const nsAReadableString& aTitle);
NS_METHOD GetLang(nsAWritableString& aLang);
NS_METHOD SetLang(const nsAReadableString& aLang);
NS_METHOD GetDir(nsAWritableString& aDir);
NS_METHOD SetDir(const nsAReadableString& aDir);
NS_METHOD GetClassName(nsAWritableString& aClassName);
NS_METHOD SetClassName(const nsAReadableString& aClassName);
NS_METHOD GetStyle(nsIDOMCSSStyleDeclaration** aStyle);
NS_METHOD GetOffsetTop(PRInt32* aOffsetTop);
NS_METHOD GetOffsetLeft(PRInt32* aOffsetLeft);
NS_METHOD GetOffsetWidth(PRInt32* aOffsetWidth);
NS_METHOD GetOffsetHeight(PRInt32* aOffsetHeight);
NS_METHOD GetOffsetParent(nsIDOMElement** aOffsetParent);
NS_METHOD GetInnerHTML(nsAWritableString& aInnerHTML);
NS_METHOD SetInnerHTML(const nsAReadableString& aInnerHTML);
NS_METHOD GetOffsetRect(nsRect& aRect,
nsIAtom* aOffsetParentTag,
nsIContent** aOffsetParent);
// Implementation for nsIContent
NS_IMETHOD SetDocument(nsIDocument* aDocument, PRBool aDeep,
PRBool aCompileEventHandlers);
NS_IMETHOD GetNameSpaceID(PRInt32& aID) const;
NS_IMETHOD NormalizeAttributeString(const nsAReadableString& aStr,
nsINodeInfo*& aNodeInfo);
NS_IMETHOD SetAttribute(PRInt32 aNameSpaceID, nsIAtom* aName,
const nsAReadableString& aValue,
PRBool aNotify);
NS_IMETHOD SetAttribute(nsINodeInfo* aNodeInfo,
const nsAReadableString& aValue,
PRBool aNotify);
NS_IMETHOD GetAttribute(PRInt32 aNameSpaceID, nsIAtom* aName,
nsAWritableString& aResult) const;
NS_IMETHOD GetAttribute(PRInt32 aNameSpaceID, nsIAtom* aName,
nsIAtom*& aPrefix, nsAWritableString& aResult) const;
NS_IMETHOD UnsetAttribute(PRInt32 aNameSpaceID, nsIAtom* aName,
PRBool aNotify);
NS_IMETHOD GetAttributeNameAt(PRInt32 aIndex,
PRInt32& aNameSpaceID,
nsIAtom*& aName,
nsIAtom*& aPrefix) const;
NS_IMETHOD GetAttributeCount(PRInt32& aResult) const;
NS_IMETHOD List(FILE* out, PRInt32 aIndent) const;
NS_IMETHOD DumpContent(FILE* out, PRInt32 aIndent,PRBool aDumpAll) const;
nsresult HandleDOMEventForAnchors(nsIContent* aOuter,
nsIPresContext* aPresContext,
nsEvent* aEvent,
nsIDOMEvent** aDOMEvent,
PRUint32 aFlags,
nsEventStatus* aEventStatus);
// Implementation for nsIHTMLContent
NS_IMETHOD SetHTMLAttribute(nsIAtom* aAttribute, const nsHTMLValue& aValue,
PRBool aNotify);
NS_IMETHOD GetHTMLAttribute(nsIAtom* aAttribute, nsHTMLValue& aValue) const;
NS_IMETHOD GetID(nsIAtom*& aResult) const;
NS_IMETHOD GetClasses(nsVoidArray& aArray) const;
NS_IMETHOD HasClass(nsIAtom* aClass) const;
NS_IMETHOD GetContentStyleRules(nsISupportsArray* aRules);
NS_IMETHOD GetInlineStyleRules(nsISupportsArray* aRules);
NS_IMETHOD GetBaseURL(nsIURI*& aBaseURL) const;
NS_IMETHOD GetBaseTarget(nsAWritableString& aBaseTarget) const;
//----------------------------------------
NS_IMETHOD AttributeToString(nsIAtom* aAttribute,
const nsHTMLValue& aValue,
nsAWritableString& aResult) const;
NS_IMETHOD GetMappedAttributeImpact(const nsIAtom* aAttribute,
PRInt32& aHint) const;
NS_IMETHOD GetAttributeMappingFunctions(nsMapAttributesFunc& aFontMapFunc,
nsMapAttributesFunc& aMapFunc) const;
void ListAttributes(FILE* out) const;
PRUint32 BaseSizeOf(nsISizeOfHandler* aSizer) const;
//----------------------------------------
// Attribute parsing utilities
struct EnumTable {
const char* tag;
PRInt32 value;
};
static PRBool ParseEnumValue(const nsAReadableString& aValue,
EnumTable* aTable,
nsHTMLValue& aResult);
static PRBool ParseCaseSensitiveEnumValue(const nsAReadableString& aValue,
EnumTable* aTable,
nsHTMLValue& aResult);
static PRBool EnumValueToString(const nsHTMLValue& aValue,
EnumTable* aTable,
nsAWritableString& aResult,
PRBool aFoldCase=PR_TRUE);
static PRBool ParseValueOrPercent(const nsAReadableString& aString,
nsHTMLValue& aResult,
nsHTMLUnit aValueUnit);
static PRBool ParseValueOrPercentOrProportional(const nsAReadableString& aString,
nsHTMLValue& aResult,
nsHTMLUnit aValueUnit);
static PRBool ValueOrPercentToString(const nsHTMLValue& aValue,
nsAWritableString& aResult);
static PRBool ValueOrPercentOrProportionalToString(const nsHTMLValue& aValue,
nsAWritableString& aResult);
static PRBool ParseValue(const nsAReadableString& aString, PRInt32 aMin,
nsHTMLValue& aResult, nsHTMLUnit aValueUnit);
static PRBool ParseValue(const nsAReadableString& aString, PRInt32 aMin,
PRInt32 aMax, nsHTMLValue& aResult,
nsHTMLUnit aValueUnit);
static PRBool ParseColor(const nsAReadableString& aString,
nsIDocument* aDocument, nsHTMLValue& aResult);
static PRBool ColorToString(const nsHTMLValue& aValue,
nsAWritableString& aResult);
static PRBool ParseCommonAttribute(nsIAtom* aAttribute,
const nsAReadableString& aValue,
nsHTMLValue& aResult);
static PRBool ParseAlignValue(const nsAReadableString& aString,
nsHTMLValue& aResult);
PRBool ParseDivAlignValue(const nsAReadableString& aString,
nsHTMLValue& aResult) const;
PRBool DivAlignValueToString(const nsHTMLValue& aValue,
nsAWritableString& aResult) const;
PRBool ParseTableHAlignValue(const nsAReadableString& aString,
nsHTMLValue& aResult) const;
PRBool TableHAlignValueToString(const nsHTMLValue& aValue,
nsAWritableString& aResult) const;
PRBool ParseTableCellHAlignValue(const nsAReadableString& aString,
nsHTMLValue& aResult) const;
PRBool TableCellHAlignValueToString(const nsHTMLValue& aValue,
nsAWritableString& aResult) const;
static PRBool ParseTableVAlignValue(const nsAReadableString& aString,
nsHTMLValue& aResult);
static PRBool TableVAlignValueToString(const nsHTMLValue& aValue,
nsAWritableString& aResult);
static PRBool AlignValueToString(const nsHTMLValue& aValue,
nsAWritableString& aResult);
static PRBool ParseImageAttribute(nsIAtom* aAttribute,
const nsAReadableString& aString,
nsHTMLValue& aResult);
static PRBool ImageAttributeToString(nsIAtom* aAttribute,
const nsHTMLValue& aValue,
nsAWritableString& aResult);
static PRBool ParseFrameborderValue(PRBool aStandardMode,
const nsAReadableString& aString,
nsHTMLValue& aResult);
static PRBool FrameborderValueToString(PRBool aStandardMode,
const nsHTMLValue& aValue,
nsAWritableString& aResult);
static PRBool ParseScrollingValue(PRBool aStandardMode,
const nsAReadableString& aString,
nsHTMLValue& aResult);
static PRBool ScrollingValueToString(PRBool aStandardMode,
const nsHTMLValue& aValue,
nsAWritableString& aResult);
nsresult ReparseStyleAttribute(void);
nsresult ParseStyleAttribute(const nsAReadableString& aValue,
nsHTMLValue& aResult);
/** Attribute Mapping Helpers
*
* All attributes that are mapped into style contexts must have a
* matched set of mapping function and impact getter
*/
static void MapCommonAttributesInto(const nsIHTMLMappedAttributes* aAttributes,
nsIMutableStyleContext* aStyleContext,
nsIPresContext* aPresContext);
static PRBool GetCommonMappedAttributesImpact(const nsIAtom* aAttribute,
PRInt32& aHint);
static void MapImageAttributesInto(const nsIHTMLMappedAttributes* aAttributes,
nsIMutableStyleContext* aContext,
nsIPresContext* aPresContext);
static PRBool GetImageMappedAttributesImpact(const nsIAtom* aAttribute,
PRInt32& aHint);
static void MapImageAlignAttributeInto(const nsIHTMLMappedAttributes* aAttributes,
nsIMutableStyleContext* aContext,
nsIPresContext* aPresContext);
static PRBool GetImageAlignAttributeImpact(const nsIAtom* aAttribute,
PRInt32& aHint);
static void MapImageBorderAttributeInto(const nsIHTMLMappedAttributes* aAttributes,
nsIMutableStyleContext* aContext,
nsIPresContext* aPresContext,
nscolor aBorderColors[4]);
static PRBool GetImageBorderAttributeImpact(const nsIAtom* aAttribute,
PRInt32& aHint);
static void MapBackgroundAttributesInto(const nsIHTMLMappedAttributes* aAttributes,
nsIMutableStyleContext* aContext,
nsIPresContext* aPresContext);
static PRBool GetBackgroundAttributesImpact(const nsIAtom* aAttribute,
PRInt32& aHint);
//XXX These three create a dependency between content and frames
static nsresult GetPrimaryFrame(nsIHTMLContent* aContent,
nsIFormControlFrame *&aFormControlFrame,
PRBool aFlushNotifications=PR_TRUE);
static nsresult GetPrimaryPresState(nsIHTMLContent* aContent,
nsIStatefulFrame::StateType aStateType,
nsIPresState** aPresState);
static nsresult GetPresContext(nsIHTMLContent* aContent,
nsIPresContext** aPresContext);
static nsresult GetBaseURL(const nsHTMLValue& aBaseHref,
nsIDocument* aDocument,
nsIURI** aResult);
// See if the content object is in a document that has nav-quirks
// mode enabled.
static PRBool InNavQuirksMode(nsIDocument* aDoc);
nsIHTMLAttributes* mAttributes;
};
//----------------------------------------------------------------------
class nsGenericHTMLLeafElement : public nsGenericHTMLElement {
public:
nsGenericHTMLLeafElement();
virtual ~nsGenericHTMLLeafElement();
NS_METHOD CopyInnerTo(nsIContent* aSrcContent,
nsGenericHTMLLeafElement* aDest,
PRBool aDeep);
// Remainder of nsIDOMHTMLElement (and nsIDOMNode)
NS_METHOD GetChildNodes(nsIDOMNodeList** aChildNodes);
NS_METHOD HasChildNodes(PRBool* aHasChildNodes) {
*aHasChildNodes = PR_FALSE;
return NS_OK;
}
NS_METHOD GetFirstChild(nsIDOMNode** aFirstChild) {
*aFirstChild = nsnull;
return NS_OK;
}
NS_METHOD GetLastChild(nsIDOMNode** aLastChild) {
*aLastChild = nsnull;
return NS_OK;
}
NS_METHOD InsertBefore(nsIDOMNode* aNewChild, nsIDOMNode* aRefChild,
nsIDOMNode** aReturn) {
return NS_ERROR_FAILURE;
}
NS_METHOD ReplaceChild(nsIDOMNode* aNewChild, nsIDOMNode* aOldChild,
nsIDOMNode** aReturn) {
return NS_ERROR_FAILURE;
}
NS_METHOD RemoveChild(nsIDOMNode* aOldChild, nsIDOMNode** aReturn) {
return NS_ERROR_FAILURE;
}
NS_METHOD AppendChild(nsIDOMNode* aNewChild, nsIDOMNode** aReturn) {
return NS_ERROR_FAILURE;
}
// Remainder of nsIHTMLContent (and nsIContent)
NS_IMETHOD Compact() {
return NS_OK;
}
NS_IMETHOD CanContainChildren(PRBool& aResult) const {
aResult = PR_FALSE;
return NS_OK;
}
NS_IMETHOD ChildCount(PRInt32& aResult) const {
aResult = 0;
return NS_OK;
}
NS_IMETHOD ChildAt(PRInt32 aIndex, nsIContent*& aResult) const {
aResult = nsnull;
return NS_OK;
}
NS_IMETHOD IndexOf(nsIContent* aPossibleChild, PRInt32& aResult) const {
aResult = -1;
return NS_OK;
}
NS_IMETHOD InsertChildAt(nsIContent* aKid, PRInt32 aIndex, PRBool aNotify) {
return NS_OK;
}
NS_IMETHOD ReplaceChildAt(nsIContent* aKid, PRInt32 aIndex, PRBool aNotify) {
return NS_OK;
}
NS_IMETHOD AppendChildTo(nsIContent* aKid, PRBool aNotify) {
return NS_OK;
}
NS_IMETHOD RemoveChildAt(PRInt32 aIndex, PRBool aNotify) {
return NS_OK;
}
};
//----------------------------------------------------------------------
class nsGenericHTMLContainerElement : public nsGenericHTMLElement
{
public:
nsGenericHTMLContainerElement();
virtual ~nsGenericHTMLContainerElement();
NS_METHOD CopyInnerTo(nsIContent* aSrcContent,
nsGenericHTMLContainerElement* aDest,
PRBool aDeep);
// Remainder of nsIDOMHTMLElement (and nsIDOMNode)
NS_METHOD GetChildNodes(nsIDOMNodeList** aChildNodes);
NS_METHOD HasChildNodes(PRBool* aHasChildNodes);
NS_METHOD GetFirstChild(nsIDOMNode** aFirstChild);
NS_METHOD GetLastChild(nsIDOMNode** aLastChild);
NS_METHOD InsertBefore(nsIDOMNode* aNewChild, nsIDOMNode* aRefChild,
nsIDOMNode** aReturn)
{
return nsGenericElement::doInsertBefore(aNewChild, aRefChild, aReturn);
}
NS_METHOD ReplaceChild(nsIDOMNode* aNewChild, nsIDOMNode* aOldChild,
nsIDOMNode** aReturn)
{
return nsGenericElement::doReplaceChild(aNewChild, aOldChild, aReturn);
}
NS_METHOD RemoveChild(nsIDOMNode* aOldChild, nsIDOMNode** aReturn)
{
return nsGenericElement::doRemoveChild(aOldChild, aReturn);
}
NS_METHOD AppendChild(nsIDOMNode* aNewChild, nsIDOMNode** aReturn)
{
return nsGenericElement::doInsertBefore(aNewChild, nsnull, aReturn);
}
// Remainder of nsIHTMLContent (and nsIContent)
NS_IMETHOD Compact();
NS_IMETHOD CanContainChildren(PRBool& aResult) const;
NS_IMETHOD ChildCount(PRInt32& aResult) const;
NS_IMETHOD ChildAt(PRInt32 aIndex, nsIContent*& aResult) const;
NS_IMETHOD IndexOf(nsIContent* aPossibleChild, PRInt32& aResult) const;
NS_IMETHOD InsertChildAt(nsIContent* aKid, PRInt32 aIndex, PRBool aNotify);
NS_IMETHOD ReplaceChildAt(nsIContent* aKid, PRInt32 aIndex, PRBool aNotify);
NS_IMETHOD AppendChildTo(nsIContent* aKid, PRBool aNotify);
NS_IMETHOD RemoveChildAt(PRInt32 aIndex, PRBool aNotify);
nsCheapVoidArray mChildren;
};
//----------------------------------------------------------------------
class nsGenericHTMLContainerFormElement : public nsGenericHTMLContainerElement,
public nsIFormControl
{
public:
nsGenericHTMLContainerFormElement();
virtual ~nsGenericHTMLContainerFormElement();
NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr);
// nsIFormControl
NS_IMETHOD GetForm(nsIDOMHTMLFormElement** aForm);
NS_IMETHOD SetForm(nsIDOMHTMLFormElement* aForm);
NS_IMETHOD Init();
NS_IMETHOD SetParent(nsIContent *aParent);
NS_IMETHOD SetDocument(nsIDocument* aDocument, PRBool aDeep,
PRBool aCompileEventHandlers);
NS_IMETHOD SetAttribute(PRInt32 aNameSpaceID, nsIAtom* aName,
const nsAReadableString& aValue, PRBool aNotify);
NS_METHOD SetAttribute(const nsAReadableString& aName,
const nsAReadableString& aValue)
{
return nsGenericHTMLElement::SetAttribute(aName, aValue);
}
NS_IMETHOD GetScriptObject(nsIScriptContext* aContext, void** aScriptObject);
protected:
nsIForm* mForm;
};
//----------------------------------------------------------------------
class nsGenericHTMLLeafFormElement : public nsGenericHTMLLeafElement,
public nsIFormControl
{
public:
nsGenericHTMLLeafFormElement();
~nsGenericHTMLLeafFormElement();
NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr);
// nsIFormControl
NS_IMETHOD GetForm(nsIDOMHTMLFormElement** aForm);
NS_IMETHOD SetForm(nsIDOMHTMLFormElement* aForm);
NS_IMETHOD Init();
NS_IMETHOD SetParent(nsIContent *aParent);
NS_IMETHOD SetDocument(nsIDocument* aDocument, PRBool aDeep,
PRBool aCompileEventHandlers);
NS_IMETHOD SetAttribute(PRInt32 aNameSpaceID, nsIAtom* aName,
const nsAReadableString& aValue, PRBool aNotify);
NS_METHOD SetAttribute(const nsAReadableString& aName,
const nsAReadableString& aValue)
{
return nsGenericHTMLElement::SetAttribute(aName, aValue);
}
NS_IMETHOD GetScriptObject(nsIScriptContext* aContext, void** aScriptObject);
protected:
nsIForm* mForm;
};
//----------------------------------------------------------------------
#define NS_IMPL_HTMLCONTENT_QI0(_class, _base) \
nsresult \
_class::QueryInterface(REFNSIID aIID, void** aInstancePtr) \
{ \
NS_ENSURE_ARG_POINTER(aInstancePtr); \
\
*aInstancePtr = nsnull; \
\
nsresult rv; \
\
rv = _base::QueryInterface(aIID, aInstancePtr); \
\
if (NS_SUCCEEDED(rv)) \
return rv; \
\
rv = DOMQueryInterface(this, aIID, aInstancePtr); \
\
if (NS_SUCCEEDED(rv)) \
return rv; \
\
return NS_NOINTERFACE; \
}
#define NS_IMPL_HTMLCONTENT_QI(_class, _base, _if) \
nsresult \
_class::QueryInterface(REFNSIID aIID, void** aInstancePtr) \
{ \
NS_ENSURE_ARG_POINTER(aInstancePtr); \
\
*aInstancePtr = nsnull; \
\
nsresult rv; \
\
rv = _base::QueryInterface(aIID, aInstancePtr); \
\
if (NS_SUCCEEDED(rv)) \
return rv; \
\
rv = DOMQueryInterface(this, aIID, aInstancePtr); \
\
if (NS_SUCCEEDED(rv)) \
return rv; \
\
nsISupports *inst = nsnull; \
\
if (aIID.Equals(NS_GET_IID(_if))) { \
inst = NS_STATIC_CAST(_if *, this); \
} else { \
return NS_NOINTERFACE; \
} \
\
NS_ADDREF(inst); \
\
*aInstancePtr = inst; \
\
return NS_OK; \
}
#define NS_IMPL_HTMLCONTENT_QI2(_class, _base, _if1, _if2) \
nsresult \
_class::QueryInterface(REFNSIID aIID, void** aInstancePtr) \
{ \
NS_ENSURE_ARG_POINTER(aInstancePtr); \
\
*aInstancePtr = nsnull; \
\
nsresult rv; \
\
rv = _base::QueryInterface(aIID, aInstancePtr); \
\
if (NS_SUCCEEDED(rv)) \
return rv; \
\
rv = DOMQueryInterface(this, aIID, aInstancePtr); \
\
if (NS_SUCCEEDED(rv)) \
return rv; \
\
nsISupports *inst = nsnull; \
\
if (aIID.Equals(NS_GET_IID(_if1))) { \
inst = NS_STATIC_CAST(_if1 *, this); \
} else if (aIID.Equals(NS_GET_IID(_if2))) { \
inst = NS_STATIC_CAST(_if2 *, this); \
} else { \
return NS_NOINTERFACE; \
} \
\
NS_ADDREF(inst); \
\
*aInstancePtr = inst; \
\
return NS_OK; \
}
#define NS_IMPL_HTMLCONTENT_QI3(_class, _base, _if1, _if2, _if3) \
nsresult \
_class::QueryInterface(REFNSIID aIID, void** aInstancePtr) \
{ \
NS_ENSURE_ARG_POINTER(aInstancePtr); \
\
*aInstancePtr = nsnull; \
\
nsresult rv; \
\
rv = _base::QueryInterface(aIID, aInstancePtr); \
\
if (NS_SUCCEEDED(rv)) \
return rv; \
\
rv = DOMQueryInterface(this, aIID, aInstancePtr); \
\
if (NS_SUCCEEDED(rv)) \
return rv; \
\
nsISupports *inst = nsnull; \
\
if (aIID.Equals(NS_GET_IID(_if1))) { \
inst = NS_STATIC_CAST(_if1 *, this); \
} else if (aIID.Equals(NS_GET_IID(_if2))) { \
inst = NS_STATIC_CAST(_if2 *, this); \
} else if (aIID.Equals(NS_GET_IID(_if3))) { \
inst = NS_STATIC_CAST(_if3 *, this); \
} else { \
return NS_NOINTERFACE; \
} \
\
NS_ADDREF(inst); \
\
*aInstancePtr = inst; \
\
return NS_OK; \
}
/**
* A macro to implement the getter and setter for a given string
* valued content property. The method uses the generic SetAttr and
* GetAttribute methods.
*/
#define NS_IMPL_STRING_ATTR(_class, _method, _atom) \
NS_IMETHODIMP \
_class::Get##_method(nsAWritableString& aValue) \
{ \
NS_STATIC_CAST(nsIHTMLContent *, this)->GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::_atom, aValue); \
return NS_OK; \
} \
NS_IMETHODIMP \
_class::Set##_method(const nsAReadableString& aValue) \
{ \
return NS_STATIC_CAST(nsIHTMLContent *, this)->SetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::_atom, aValue, PR_TRUE); \
}
/**
* A macro to implement the getter and setter for a given boolean
* valued content property. The method uses the generic SetAttr and
* GetAttribute methods.
*/
#define NS_IMPL_BOOL_ATTR(_class, _method, _atom) \
NS_IMETHODIMP \
_class::Get##_method(PRBool* aValue) \
{ \
nsHTMLValue val; \
nsresult rv; \
rv = NS_STATIC_CAST(nsIHTMLContent *, this)->GetHTMLAttribute(nsHTMLAtoms::_atom, val); \
*aValue = NS_CONTENT_ATTR_NOT_THERE != rv; \
return NS_OK; \
} \
NS_IMETHODIMP \
_class::Set##_method(PRBool aValue) \
{ \
nsHTMLValue empty(eHTMLUnit_Empty); \
if (aValue) { \
return NS_STATIC_CAST(nsIHTMLContent *, this)->SetHTMLAttribute(nsHTMLAtoms::_atom, empty, PR_TRUE); \
} \
else { \
NS_STATIC_CAST(nsIHTMLContent *, this)->UnsetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::_atom, PR_TRUE); \
return NS_OK; \
} \
}
/**
* A macro to implement the getter and setter for a given integer
* valued content property. The method uses the generic SetAttr and
* GetAttribute methods.
*/
#define NS_IMPL_INT_ATTR(_class, _method, _atom) \
NS_IMETHODIMP \
_class::Get##_method(PRInt32* aValue) \
{ \
nsHTMLValue value; \
*aValue = -1; \
if (NS_CONTENT_ATTR_HAS_VALUE == \
NS_STATIC_CAST(nsIHTMLContent *, this)->GetHTMLAttribute(nsHTMLAtoms::_atom, value)) { \
if (value.GetUnit() == eHTMLUnit_Integer) { \
*aValue = value.GetIntValue(); \
} \
} \
return NS_OK; \
} \
NS_IMETHODIMP \
_class::Set##_method(PRInt32 aValue) \
{ \
nsHTMLValue value(aValue, eHTMLUnit_Integer); \
return NS_STATIC_CAST(nsIHTMLContent *, this)->SetHTMLAttribute(nsHTMLAtoms::_atom, value, PR_TRUE); \
}
#endif /* nsGenericHTMLElement_h___ */