gecko-dev/content/base/public/nsDOMFile.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla 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/MPL/
*
* 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 mozila.org code.
*
* The Initial Developer of the Original Code is
* Mozilla Corporation
* Portions created by the Initial Developer are Copyright (C) 2007
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Dave Camp <dcamp@mozilla.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef nsDOMFile_h__
#define nsDOMFile_h__
#include "nsICharsetDetectionObserver.h"
#include "nsIDOMFile.h"
#include "nsIDOMFileList.h"
#include "nsIInputStream.h"
#include "nsCOMArray.h"
#include "nsCOMPtr.h"
#include "nsString.h"
class nsIDOMDocument;
class nsIFile;
class nsIInputStream;
class nsDOMFile : public nsIDOMFile,
public nsICharsetDetectionObserver
{
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIDOMFILE
nsDOMFile(nsIFile *aFile)
: mFile(aFile)
{}
~nsDOMFile() {}
// from nsICharsetDetectionObserver
NS_IMETHOD Notify(const char *aCharset, nsDetectionConfident aConf);
private:
nsCOMPtr<nsIFile> mFile;
nsString mContentType;
nsCString mCharset;
nsresult GuessCharset(nsIInputStream *aStream,
nsACString &aCharset);
nsresult ConvertStream(nsIInputStream *aStream, const char *aCharset,
nsAString &aResult);
};
class nsDOMFileList : public nsIDOMFileList
{
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIDOMFILELIST
PRBool Append(nsIDOMFile *aFile) { return mFiles.AppendObject(aFile); }
PRBool Remove(PRUint32 aIndex) { return mFiles.RemoveObjectAt(aIndex); }
void Clear() { return mFiles.Clear(); }
nsIDOMFile* GetItemAt(PRUint32 aIndex)
{
return mFiles.SafeObjectAt(aIndex);
}
static nsDOMFileList* FromSupports(nsISupports* aSupports)
{
#ifdef DEBUG
{
nsCOMPtr<nsIDOMFileList> list_qi = do_QueryInterface(aSupports);
// If this assertion fires the QI implementation for the object in
// question doesn't use the nsIDOMFileList pointer as the nsISupports
// pointer. That must be fixed, or we'll crash...
NS_ASSERTION(list_qi == static_cast<nsIDOMFileList*>(aSupports),
"Uh, fix QI!");
}
#endif
return static_cast<nsDOMFileList*>(aSupports);
}
private:
nsCOMArray<nsIDOMFile> mFiles;
};
#endif