gecko-dev/dom/base/nsMimeTypeArray.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 sw=2 et tw=79: */
/* ***** 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 mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of 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
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* ***** END LICENSE BLOCK ***** */
#ifndef nsMimeTypeArray_h___
#define nsMimeTypeArray_h___
#include "nsIDOMMimeTypeArray.h"
#include "nsIDOMMimeType.h"
#include "nsString.h"
#include "nsCOMPtr.h"
#include "nsCOMArray.h"
class nsIDOMNavigator;
// NB: Due to weak references, nsNavigator has intimate knowledge of our
// members.
class nsMimeTypeArray : public nsIDOMMimeTypeArray
{
public:
nsMimeTypeArray(nsIDOMNavigator* navigator);
virtual ~nsMimeTypeArray();
NS_DECL_ISUPPORTS
NS_DECL_NSIDOMMIMETYPEARRAY
void Refresh();
nsIDOMMimeType* GetItemAt(PRUint32 aIndex, nsresult* aResult);
nsIDOMMimeType* GetNamedItem(const nsAString& aName, nsresult* aResult);
static nsMimeTypeArray* FromSupports(nsISupports* aSupports)
{
#ifdef DEBUG
{
nsCOMPtr<nsIDOMMimeTypeArray> array_qi = do_QueryInterface(aSupports);
// If this assertion fires the QI implementation for the object in
// question doesn't use the nsIDOMMimeTypeArray pointer as the nsISupports
// pointer. That must be fixed, or we'll crash...
NS_ASSERTION(array_qi == static_cast<nsIDOMMimeTypeArray*>(aSupports),
"Uh, fix QI!");
}
#endif
return static_cast<nsMimeTypeArray*>(aSupports);
}
void Invalidate()
{
// NB: This will cause GetMimeTypes to fail from now on.
mNavigator = nsnull;
Clear();
}
private:
nsresult GetMimeTypes();
void Clear();
protected:
nsIDOMNavigator* mNavigator;
// Number of mimetypes handled by plugins.
PRUint32 mPluginMimeTypeCount;
// mMimeTypeArray contains all mimetypes handled by plugins
// (mPluginMimeTypeCount) and any mimetypes that we handle internally and
// have been looked up before. The number of items in mMimeTypeArray should
// thus always be equal to or higher than mPluginMimeTypeCount.
nsCOMArray<nsIDOMMimeType> mMimeTypeArray;
bool mInited;
};
class nsMimeType : public nsIDOMMimeType
{
public:
nsMimeType(nsIDOMPlugin* aPlugin, nsIDOMMimeType* aMimeType);
virtual ~nsMimeType();
NS_DECL_ISUPPORTS
NS_DECL_NSIDOMMIMETYPE
void DetachPlugin() { mPlugin = nsnull; }
protected:
nsIDOMPlugin* mPlugin;
nsCOMPtr<nsIDOMMimeType> mMimeType;
};
class nsHelperMimeType : public nsIDOMMimeType
{
public:
nsHelperMimeType(const nsAString& aType)
: mType(aType)
{
}
virtual ~nsHelperMimeType()
{
}
NS_DECL_ISUPPORTS
NS_DECL_NSIDOMMIMETYPE
private:
nsString mType;
};
#endif /* nsMimeTypeArray_h___ */