/*
 * DO NOT EDIT.  THIS FILE IS GENERATED FROM e:/xr19rel/WINNT_5.2_Depend/mozilla/xpcom/ds/nsIArray.idl
 */

#ifndef __gen_nsIArray_h__
#define __gen_nsIArray_h__


#ifndef __gen_nsISupports_h__
#include "nsISupports.h"
#endif

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


/* starting interface:    nsIArray */
#define NS_IARRAY_IID_STR "114744d9-c369-456e-b55a-52fe52880d2d"

#define NS_IARRAY_IID \
  {0x114744d9, 0xc369, 0x456e, \
    { 0xb5, 0x5a, 0x52, 0xfe, 0x52, 0x88, 0x0d, 0x2d }}

/**
 * nsIArray
 *
 * An indexed collection of elements. Provides basic functionality for
 * retrieving elements at a specific position, searching for
 * elements. Indexes are zero-based, such that the last element in the
 * array is stored at the index length-1.
 *
 * For an array which can be modified, see nsIMutableArray below.
 *
 * Neither interface makes any attempt to protect the individual
 * elements from modification. The convention is that the elements of
 * the array should not be modified. Documentation within a specific
 * interface should describe variations from this convention.
 *
 * It is also convention that if an interface provides access to an
 * nsIArray, that the array should not be QueryInterfaced to an
 * nsIMutableArray for modification. If the interface in question had
 * intended the array to be modified, it would have returned an
 * nsIMutableArray!
 *
 * null is a valid entry in the array, and as such any nsISupports
 * parameters may be null, except where noted.
 *
 * @status FROZEN
 */
class NS_NO_VTABLE NS_SCRIPTABLE nsIArray : public nsISupports {
 public: 

  NS_DECLARE_STATIC_IID_ACCESSOR(NS_IARRAY_IID)

  /**
     * length
     *
     * number of elements in the array.
     */
  /* readonly attribute unsigned long length; */
  NS_SCRIPTABLE NS_IMETHOD GetLength(PRUint32 *aLength) = 0;

  /**
     * queryElementAt()
     *
     * Retrieve a specific element of the array, and QueryInterface it
     * to the specified interface. null is a valid result for
     * this method, but exceptions are thrown in other circumstances
     * 
     * @param index position of element
     * @param uuid the IID of the requested interface
     * @param result the object, QI'd to the requested interface
     *
     * @throws NS_ERROR_NO_INTERFACE when an entry exists at the
     *         specified index, but the requested interface is not
     *         available.
     * @throws NS_ERROR_ILLEGAL_VALUE when index > length-1
     *
     */
  /* void queryElementAt (in unsigned long index, in nsIIDRef uuid, [iid_is (uuid), retval] out nsQIResult result); */
  NS_SCRIPTABLE NS_IMETHOD QueryElementAt(PRUint32 index, const nsIID & uuid, void * *result) = 0;

  /**
     * indexOf()
     * 
     * Get the position of a specific element. Note that since null is
     * a valid input, exceptions are used to indicate that an element
     * is not found.
     * 
     * @param startIndex The initial element to search in the array
     *                   To start at the beginning, use 0 as the
     *                   startIndex
     * @param element    The element you are looking for
     * @returns a number >= startIndex which is the position of the
     *          element in the array.
     * @throws NS_ERROR_NOT_FOUND if the element was not in the array.
     */
  /* unsigned long indexOf (in unsigned long startIndex, in nsISupports element); */
  NS_SCRIPTABLE NS_IMETHOD IndexOf(PRUint32 startIndex, nsISupports *element, PRUint32 *_retval) = 0;

  /**
     * enumerate the array
     *
     * @returns a new enumerator positioned at the start of the array
     * @throws NS_ERROR_FAILURE if the array is empty (to make it easy
     *         to detect errors)
     */
  /* nsISimpleEnumerator enumerate (); */
  NS_SCRIPTABLE NS_IMETHOD Enumerate(nsISimpleEnumerator **_retval) = 0;

};

  NS_DEFINE_STATIC_IID_ACCESSOR(nsIArray, NS_IARRAY_IID)

/* Use this macro when declaring classes that implement this interface. */
#define NS_DECL_NSIARRAY \
  NS_SCRIPTABLE NS_IMETHOD GetLength(PRUint32 *aLength); \
  NS_SCRIPTABLE NS_IMETHOD QueryElementAt(PRUint32 index, const nsIID & uuid, void * *result); \
  NS_SCRIPTABLE NS_IMETHOD IndexOf(PRUint32 startIndex, nsISupports *element, PRUint32 *_retval); \
  NS_SCRIPTABLE NS_IMETHOD Enumerate(nsISimpleEnumerator **_retval); 

/* Use this macro to declare functions that forward the behavior of this interface to another object. */
#define NS_FORWARD_NSIARRAY(_to) \
  NS_SCRIPTABLE NS_IMETHOD GetLength(PRUint32 *aLength) { return _to GetLength(aLength); } \
  NS_SCRIPTABLE NS_IMETHOD QueryElementAt(PRUint32 index, const nsIID & uuid, void * *result) { return _to QueryElementAt(index, uuid, result); } \
  NS_SCRIPTABLE NS_IMETHOD IndexOf(PRUint32 startIndex, nsISupports *element, PRUint32 *_retval) { return _to IndexOf(startIndex, element, _retval); } \
  NS_SCRIPTABLE NS_IMETHOD Enumerate(nsISimpleEnumerator **_retval) { return _to Enumerate(_retval); } 

/* Use this macro to declare functions that forward the behavior of this interface to another object in a safe way. */
#define NS_FORWARD_SAFE_NSIARRAY(_to) \
  NS_SCRIPTABLE NS_IMETHOD GetLength(PRUint32 *aLength) { return !_to ? NS_ERROR_NULL_POINTER : _to->GetLength(aLength); } \
  NS_SCRIPTABLE NS_IMETHOD QueryElementAt(PRUint32 index, const nsIID & uuid, void * *result) { return !_to ? NS_ERROR_NULL_POINTER : _to->QueryElementAt(index, uuid, result); } \
  NS_SCRIPTABLE NS_IMETHOD IndexOf(PRUint32 startIndex, nsISupports *element, PRUint32 *_retval) { return !_to ? NS_ERROR_NULL_POINTER : _to->IndexOf(startIndex, element, _retval); } \
  NS_SCRIPTABLE NS_IMETHOD Enumerate(nsISimpleEnumerator **_retval) { return !_to ? NS_ERROR_NULL_POINTER : _to->Enumerate(_retval); } 

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

/* Header file */
class nsArray : public nsIArray
{
public:
  NS_DECL_ISUPPORTS
  NS_DECL_NSIARRAY

  nsArray();

private:
  ~nsArray();

protected:
  /* additional members */
};

/* Implementation file */
NS_IMPL_ISUPPORTS1(nsArray, nsIArray)

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

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

/* readonly attribute unsigned long length; */
NS_IMETHODIMP nsArray::GetLength(PRUint32 *aLength)
{
    return NS_ERROR_NOT_IMPLEMENTED;
}

/* void queryElementAt (in unsigned long index, in nsIIDRef uuid, [iid_is (uuid), retval] out nsQIResult result); */
NS_IMETHODIMP nsArray::QueryElementAt(PRUint32 index, const nsIID & uuid, void * *result)
{
    return NS_ERROR_NOT_IMPLEMENTED;
}

/* unsigned long indexOf (in unsigned long startIndex, in nsISupports element); */
NS_IMETHODIMP nsArray::IndexOf(PRUint32 startIndex, nsISupports *element, PRUint32 *_retval)
{
    return NS_ERROR_NOT_IMPLEMENTED;
}

/* nsISimpleEnumerator enumerate (); */
NS_IMETHODIMP nsArray::Enumerate(nsISimpleEnumerator **_retval)
{
    return NS_ERROR_NOT_IMPLEMENTED;
}

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


#endif /* __gen_nsIArray_h__ */
