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/usr/include/thunderbird/nsIDOMHTMLButtonElement.h is in thunderbird-dev 1:38.6.0+build1-0ubuntu1.

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The actual contents of the file can be viewed below.

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/*
 * DO NOT EDIT.  THIS FILE IS GENERATED FROM ../../../dist/idl/nsIDOMHTMLButtonElement.idl
 */

#ifndef __gen_nsIDOMHTMLButtonElement_h__
#define __gen_nsIDOMHTMLButtonElement_h__


#ifndef __gen_nsIDOMHTMLElement_h__
#include "nsIDOMHTMLElement.h"
#endif

/* For IDL files that don't want to include root IDL files. */
#ifndef NS_NO_VTABLE
#define NS_NO_VTABLE
#endif
class nsIDOMValidityState; /* forward declaration */


/* starting interface:    nsIDOMHTMLButtonElement */
#define NS_IDOMHTMLBUTTONELEMENT_IID_STR "44b7a468-7dba-4f0c-9b4e-ee46dc0f26c7"

#define NS_IDOMHTMLBUTTONELEMENT_IID \
  {0x44b7a468, 0x7dba, 0x4f0c, \
    { 0x9b, 0x4e, 0xee, 0x46, 0xdc, 0x0f, 0x26, 0xc7 }}

class NS_NO_VTABLE nsIDOMHTMLButtonElement : public nsISupports {
 public: 

  NS_DECLARE_STATIC_IID_ACCESSOR(NS_IDOMHTMLBUTTONELEMENT_IID)

  /* attribute boolean autofocus; */
  NS_IMETHOD GetAutofocus(bool *aAutofocus) = 0;
  NS_IMETHOD SetAutofocus(bool aAutofocus) = 0;

  /* attribute boolean disabled; */
  NS_IMETHOD GetDisabled(bool *aDisabled) = 0;
  NS_IMETHOD SetDisabled(bool aDisabled) = 0;

  /* readonly attribute nsIDOMHTMLFormElement form; */
  NS_IMETHOD GetForm(nsIDOMHTMLFormElement * *aForm) = 0;

  /* attribute DOMString formAction; */
  NS_IMETHOD GetFormAction(nsAString & aFormAction) = 0;
  NS_IMETHOD SetFormAction(const nsAString & aFormAction) = 0;

  /* attribute DOMString formEnctype; */
  NS_IMETHOD GetFormEnctype(nsAString & aFormEnctype) = 0;
  NS_IMETHOD SetFormEnctype(const nsAString & aFormEnctype) = 0;

  /* attribute DOMString formMethod; */
  NS_IMETHOD GetFormMethod(nsAString & aFormMethod) = 0;
  NS_IMETHOD SetFormMethod(const nsAString & aFormMethod) = 0;

  /* attribute boolean formNoValidate; */
  NS_IMETHOD GetFormNoValidate(bool *aFormNoValidate) = 0;
  NS_IMETHOD SetFormNoValidate(bool aFormNoValidate) = 0;

  /* attribute DOMString formTarget; */
  NS_IMETHOD GetFormTarget(nsAString & aFormTarget) = 0;
  NS_IMETHOD SetFormTarget(const nsAString & aFormTarget) = 0;

  /* attribute DOMString name; */
  NS_IMETHOD GetName(nsAString & aName) = 0;
  NS_IMETHOD SetName(const nsAString & aName) = 0;

  /* attribute DOMString type; */
  NS_IMETHOD GetType(nsAString & aType) = 0;
  NS_IMETHOD SetType(const nsAString & aType) = 0;

  /* attribute DOMString value; */
  NS_IMETHOD GetValue(nsAString & aValue) = 0;
  NS_IMETHOD SetValue(const nsAString & aValue) = 0;

  /* readonly attribute boolean willValidate; */
  NS_IMETHOD GetWillValidate(bool *aWillValidate) = 0;

  /* readonly attribute nsIDOMValidityState validity; */
  NS_IMETHOD GetValidity(nsIDOMValidityState * *aValidity) = 0;

  /* readonly attribute DOMString validationMessage; */
  NS_IMETHOD GetValidationMessage(nsAString & aValidationMessage) = 0;

  /* boolean checkValidity (); */
  NS_IMETHOD CheckValidity(bool *_retval) = 0;

  /* void setCustomValidity (in DOMString error); */
  NS_IMETHOD SetCustomValidity(const nsAString & error) = 0;

};

  NS_DEFINE_STATIC_IID_ACCESSOR(nsIDOMHTMLButtonElement, NS_IDOMHTMLBUTTONELEMENT_IID)

/* Use this macro when declaring classes that implement this interface. */
#define NS_DECL_NSIDOMHTMLBUTTONELEMENT \
  NS_IMETHOD GetAutofocus(bool *aAutofocus) override; \
  NS_IMETHOD SetAutofocus(bool aAutofocus) override; \
  NS_IMETHOD GetDisabled(bool *aDisabled) override; \
  NS_IMETHOD SetDisabled(bool aDisabled) override; \
  NS_IMETHOD GetForm(nsIDOMHTMLFormElement * *aForm) override; \
  NS_IMETHOD GetFormAction(nsAString & aFormAction) override; \
  NS_IMETHOD SetFormAction(const nsAString & aFormAction) override; \
  NS_IMETHOD GetFormEnctype(nsAString & aFormEnctype) override; \
  NS_IMETHOD SetFormEnctype(const nsAString & aFormEnctype) override; \
  NS_IMETHOD GetFormMethod(nsAString & aFormMethod) override; \
  NS_IMETHOD SetFormMethod(const nsAString & aFormMethod) override; \
  NS_IMETHOD GetFormNoValidate(bool *aFormNoValidate) override; \
  NS_IMETHOD SetFormNoValidate(bool aFormNoValidate) override; \
  NS_IMETHOD GetFormTarget(nsAString & aFormTarget) override; \
  NS_IMETHOD SetFormTarget(const nsAString & aFormTarget) override; \
  NS_IMETHOD GetName(nsAString & aName) override; \
  NS_IMETHOD SetName(const nsAString & aName) override; \
  NS_IMETHOD GetType(nsAString & aType) override; \
  NS_IMETHOD SetType(const nsAString & aType) override; \
  NS_IMETHOD GetValue(nsAString & aValue) override; \
  NS_IMETHOD SetValue(const nsAString & aValue) override; \
  NS_IMETHOD GetWillValidate(bool *aWillValidate) override; \
  NS_IMETHOD GetValidity(nsIDOMValidityState * *aValidity) override; \
  NS_IMETHOD GetValidationMessage(nsAString & aValidationMessage) override; \
  NS_IMETHOD CheckValidity(bool *_retval) override; \
  NS_IMETHOD SetCustomValidity(const nsAString & error) override; 

/* Use this macro to declare functions that forward the behavior of this interface to another object. */
#define NS_FORWARD_NSIDOMHTMLBUTTONELEMENT(_to) \
  NS_IMETHOD GetAutofocus(bool *aAutofocus) override { return _to GetAutofocus(aAutofocus); } \
  NS_IMETHOD SetAutofocus(bool aAutofocus) override { return _to SetAutofocus(aAutofocus); } \
  NS_IMETHOD GetDisabled(bool *aDisabled) override { return _to GetDisabled(aDisabled); } \
  NS_IMETHOD SetDisabled(bool aDisabled) override { return _to SetDisabled(aDisabled); } \
  NS_IMETHOD GetForm(nsIDOMHTMLFormElement * *aForm) override { return _to GetForm(aForm); } \
  NS_IMETHOD GetFormAction(nsAString & aFormAction) override { return _to GetFormAction(aFormAction); } \
  NS_IMETHOD SetFormAction(const nsAString & aFormAction) override { return _to SetFormAction(aFormAction); } \
  NS_IMETHOD GetFormEnctype(nsAString & aFormEnctype) override { return _to GetFormEnctype(aFormEnctype); } \
  NS_IMETHOD SetFormEnctype(const nsAString & aFormEnctype) override { return _to SetFormEnctype(aFormEnctype); } \
  NS_IMETHOD GetFormMethod(nsAString & aFormMethod) override { return _to GetFormMethod(aFormMethod); } \
  NS_IMETHOD SetFormMethod(const nsAString & aFormMethod) override { return _to SetFormMethod(aFormMethod); } \
  NS_IMETHOD GetFormNoValidate(bool *aFormNoValidate) override { return _to GetFormNoValidate(aFormNoValidate); } \
  NS_IMETHOD SetFormNoValidate(bool aFormNoValidate) override { return _to SetFormNoValidate(aFormNoValidate); } \
  NS_IMETHOD GetFormTarget(nsAString & aFormTarget) override { return _to GetFormTarget(aFormTarget); } \
  NS_IMETHOD SetFormTarget(const nsAString & aFormTarget) override { return _to SetFormTarget(aFormTarget); } \
  NS_IMETHOD GetName(nsAString & aName) override { return _to GetName(aName); } \
  NS_IMETHOD SetName(const nsAString & aName) override { return _to SetName(aName); } \
  NS_IMETHOD GetType(nsAString & aType) override { return _to GetType(aType); } \
  NS_IMETHOD SetType(const nsAString & aType) override { return _to SetType(aType); } \
  NS_IMETHOD GetValue(nsAString & aValue) override { return _to GetValue(aValue); } \
  NS_IMETHOD SetValue(const nsAString & aValue) override { return _to SetValue(aValue); } \
  NS_IMETHOD GetWillValidate(bool *aWillValidate) override { return _to GetWillValidate(aWillValidate); } \
  NS_IMETHOD GetValidity(nsIDOMValidityState * *aValidity) override { return _to GetValidity(aValidity); } \
  NS_IMETHOD GetValidationMessage(nsAString & aValidationMessage) override { return _to GetValidationMessage(aValidationMessage); } \
  NS_IMETHOD CheckValidity(bool *_retval) override { return _to CheckValidity(_retval); } \
  NS_IMETHOD SetCustomValidity(const nsAString & error) override { return _to SetCustomValidity(error); } 

/* Use this macro to declare functions that forward the behavior of this interface to another object in a safe way. */
#define NS_FORWARD_SAFE_NSIDOMHTMLBUTTONELEMENT(_to) \
  NS_IMETHOD GetAutofocus(bool *aAutofocus) override { return !_to ? NS_ERROR_NULL_POINTER : _to->GetAutofocus(aAutofocus); } \
  NS_IMETHOD SetAutofocus(bool aAutofocus) override { return !_to ? NS_ERROR_NULL_POINTER : _to->SetAutofocus(aAutofocus); } \
  NS_IMETHOD GetDisabled(bool *aDisabled) override { return !_to ? NS_ERROR_NULL_POINTER : _to->GetDisabled(aDisabled); } \
  NS_IMETHOD SetDisabled(bool aDisabled) override { return !_to ? NS_ERROR_NULL_POINTER : _to->SetDisabled(aDisabled); } \
  NS_IMETHOD GetForm(nsIDOMHTMLFormElement * *aForm) override { return !_to ? NS_ERROR_NULL_POINTER : _to->GetForm(aForm); } \
  NS_IMETHOD GetFormAction(nsAString & aFormAction) override { return !_to ? NS_ERROR_NULL_POINTER : _to->GetFormAction(aFormAction); } \
  NS_IMETHOD SetFormAction(const nsAString & aFormAction) override { return !_to ? NS_ERROR_NULL_POINTER : _to->SetFormAction(aFormAction); } \
  NS_IMETHOD GetFormEnctype(nsAString & aFormEnctype) override { return !_to ? NS_ERROR_NULL_POINTER : _to->GetFormEnctype(aFormEnctype); } \
  NS_IMETHOD SetFormEnctype(const nsAString & aFormEnctype) override { return !_to ? NS_ERROR_NULL_POINTER : _to->SetFormEnctype(aFormEnctype); } \
  NS_IMETHOD GetFormMethod(nsAString & aFormMethod) override { return !_to ? NS_ERROR_NULL_POINTER : _to->GetFormMethod(aFormMethod); } \
  NS_IMETHOD SetFormMethod(const nsAString & aFormMethod) override { return !_to ? NS_ERROR_NULL_POINTER : _to->SetFormMethod(aFormMethod); } \
  NS_IMETHOD GetFormNoValidate(bool *aFormNoValidate) override { return !_to ? NS_ERROR_NULL_POINTER : _to->GetFormNoValidate(aFormNoValidate); } \
  NS_IMETHOD SetFormNoValidate(bool aFormNoValidate) override { return !_to ? NS_ERROR_NULL_POINTER : _to->SetFormNoValidate(aFormNoValidate); } \
  NS_IMETHOD GetFormTarget(nsAString & aFormTarget) override { return !_to ? NS_ERROR_NULL_POINTER : _to->GetFormTarget(aFormTarget); } \
  NS_IMETHOD SetFormTarget(const nsAString & aFormTarget) override { return !_to ? NS_ERROR_NULL_POINTER : _to->SetFormTarget(aFormTarget); } \
  NS_IMETHOD GetName(nsAString & aName) override { return !_to ? NS_ERROR_NULL_POINTER : _to->GetName(aName); } \
  NS_IMETHOD SetName(const nsAString & aName) override { return !_to ? NS_ERROR_NULL_POINTER : _to->SetName(aName); } \
  NS_IMETHOD GetType(nsAString & aType) override { return !_to ? NS_ERROR_NULL_POINTER : _to->GetType(aType); } \
  NS_IMETHOD SetType(const nsAString & aType) override { return !_to ? NS_ERROR_NULL_POINTER : _to->SetType(aType); } \
  NS_IMETHOD GetValue(nsAString & aValue) override { return !_to ? NS_ERROR_NULL_POINTER : _to->GetValue(aValue); } \
  NS_IMETHOD SetValue(const nsAString & aValue) override { return !_to ? NS_ERROR_NULL_POINTER : _to->SetValue(aValue); } \
  NS_IMETHOD GetWillValidate(bool *aWillValidate) override { return !_to ? NS_ERROR_NULL_POINTER : _to->GetWillValidate(aWillValidate); } \
  NS_IMETHOD GetValidity(nsIDOMValidityState * *aValidity) override { return !_to ? NS_ERROR_NULL_POINTER : _to->GetValidity(aValidity); } \
  NS_IMETHOD GetValidationMessage(nsAString & aValidationMessage) override { return !_to ? NS_ERROR_NULL_POINTER : _to->GetValidationMessage(aValidationMessage); } \
  NS_IMETHOD CheckValidity(bool *_retval) override { return !_to ? NS_ERROR_NULL_POINTER : _to->CheckValidity(_retval); } \
  NS_IMETHOD SetCustomValidity(const nsAString & error) override { return !_to ? NS_ERROR_NULL_POINTER : _to->SetCustomValidity(error); } 

#if 0
/* Use the code below as a template for the implementation class for this interface. */

/* Header file */
class nsDOMHTMLButtonElement : public nsIDOMHTMLButtonElement
{
public:
  NS_DECL_ISUPPORTS
  NS_DECL_NSIDOMHTMLBUTTONELEMENT

  nsDOMHTMLButtonElement();

private:
  ~nsDOMHTMLButtonElement();

protected:
  /* additional members */
};

/* Implementation file */
NS_IMPL_ISUPPORTS(nsDOMHTMLButtonElement, nsIDOMHTMLButtonElement)

nsDOMHTMLButtonElement::nsDOMHTMLButtonElement()
{
  /* member initializers and constructor code */
}

nsDOMHTMLButtonElement::~nsDOMHTMLButtonElement()
{
  /* destructor code */
}

/* attribute boolean autofocus; */
NS_IMETHODIMP nsDOMHTMLButtonElement::GetAutofocus(bool *aAutofocus)
{
    return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsDOMHTMLButtonElement::SetAutofocus(bool aAutofocus)
{
    return NS_ERROR_NOT_IMPLEMENTED;
}

/* attribute boolean disabled; */
NS_IMETHODIMP nsDOMHTMLButtonElement::GetDisabled(bool *aDisabled)
{
    return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsDOMHTMLButtonElement::SetDisabled(bool aDisabled)
{
    return NS_ERROR_NOT_IMPLEMENTED;
}

/* readonly attribute nsIDOMHTMLFormElement form; */
NS_IMETHODIMP nsDOMHTMLButtonElement::GetForm(nsIDOMHTMLFormElement * *aForm)
{
    return NS_ERROR_NOT_IMPLEMENTED;
}

/* attribute DOMString formAction; */
NS_IMETHODIMP nsDOMHTMLButtonElement::GetFormAction(nsAString & aFormAction)
{
    return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsDOMHTMLButtonElement::SetFormAction(const nsAString & aFormAction)
{
    return NS_ERROR_NOT_IMPLEMENTED;
}

/* attribute DOMString formEnctype; */
NS_IMETHODIMP nsDOMHTMLButtonElement::GetFormEnctype(nsAString & aFormEnctype)
{
    return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsDOMHTMLButtonElement::SetFormEnctype(const nsAString & aFormEnctype)
{
    return NS_ERROR_NOT_IMPLEMENTED;
}

/* attribute DOMString formMethod; */
NS_IMETHODIMP nsDOMHTMLButtonElement::GetFormMethod(nsAString & aFormMethod)
{
    return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsDOMHTMLButtonElement::SetFormMethod(const nsAString & aFormMethod)
{
    return NS_ERROR_NOT_IMPLEMENTED;
}

/* attribute boolean formNoValidate; */
NS_IMETHODIMP nsDOMHTMLButtonElement::GetFormNoValidate(bool *aFormNoValidate)
{
    return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsDOMHTMLButtonElement::SetFormNoValidate(bool aFormNoValidate)
{
    return NS_ERROR_NOT_IMPLEMENTED;
}

/* attribute DOMString formTarget; */
NS_IMETHODIMP nsDOMHTMLButtonElement::GetFormTarget(nsAString & aFormTarget)
{
    return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsDOMHTMLButtonElement::SetFormTarget(const nsAString & aFormTarget)
{
    return NS_ERROR_NOT_IMPLEMENTED;
}

/* attribute DOMString name; */
NS_IMETHODIMP nsDOMHTMLButtonElement::GetName(nsAString & aName)
{
    return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsDOMHTMLButtonElement::SetName(const nsAString & aName)
{
    return NS_ERROR_NOT_IMPLEMENTED;
}

/* attribute DOMString type; */
NS_IMETHODIMP nsDOMHTMLButtonElement::GetType(nsAString & aType)
{
    return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsDOMHTMLButtonElement::SetType(const nsAString & aType)
{
    return NS_ERROR_NOT_IMPLEMENTED;
}

/* attribute DOMString value; */
NS_IMETHODIMP nsDOMHTMLButtonElement::GetValue(nsAString & aValue)
{
    return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsDOMHTMLButtonElement::SetValue(const nsAString & aValue)
{
    return NS_ERROR_NOT_IMPLEMENTED;
}

/* readonly attribute boolean willValidate; */
NS_IMETHODIMP nsDOMHTMLButtonElement::GetWillValidate(bool *aWillValidate)
{
    return NS_ERROR_NOT_IMPLEMENTED;
}

/* readonly attribute nsIDOMValidityState validity; */
NS_IMETHODIMP nsDOMHTMLButtonElement::GetValidity(nsIDOMValidityState * *aValidity)
{
    return NS_ERROR_NOT_IMPLEMENTED;
}

/* readonly attribute DOMString validationMessage; */
NS_IMETHODIMP nsDOMHTMLButtonElement::GetValidationMessage(nsAString & aValidationMessage)
{
    return NS_ERROR_NOT_IMPLEMENTED;
}

/* boolean checkValidity (); */
NS_IMETHODIMP nsDOMHTMLButtonElement::CheckValidity(bool *_retval)
{
    return NS_ERROR_NOT_IMPLEMENTED;
}

/* void setCustomValidity (in DOMString error); */
NS_IMETHODIMP nsDOMHTMLButtonElement::SetCustomValidity(const nsAString & error)
{
    return NS_ERROR_NOT_IMPLEMENTED;
}

/* End of implementation class template. */
#endif


#endif /* __gen_nsIDOMHTMLButtonElement_h__ */