gecko-dev/dom/base/nsMimeTypeArray.h

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2.7 KiB
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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: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#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(uint32_t 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 = nullptr;
Clear();
}
private:
nsresult GetMimeTypes();
void Clear();
protected:
nsIDOMNavigator* mNavigator;
// Number of mimetypes handled by plugins.
uint32_t 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 = nullptr; }
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___ */