1 // Copyright 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 // This file provides MIME related utilities.
7 #ifndef CHROME_BROWSER_EXTENSIONS_API_FILE_HANDLERS_MIME_UTIL_H_
8 #define CHROME_BROWSER_EXTENSIONS_API_FILE_HANDLERS_MIME_UTIL_H_
13 #include "base/callback.h"
14 #include "base/memory/scoped_ptr.h"
15 #include "base/memory/weak_ptr.h"
25 } // namespace storage
27 namespace extensions
{
28 namespace app_file_handler_util
{
30 // Gets a MIME type for a local path and returns it with |callback|. If not
31 // found, then the MIME type is an empty string.
32 void GetMimeTypeForLocalPath(
34 const base::FilePath
& local_path
,
35 const base::Callback
<void(const std::string
&)>& callback
);
37 // Collects MIME types for files passed in the input vector. For non-native
38 // file systems tries to fetch the MIME type from metadata. For native ones,
39 // tries to sniff or guess by looking at the extension. If MIME type is not
40 // available, then an empty string is returned in the result vector.
41 class MimeTypeCollector
{
43 typedef base::Callback
<void(scoped_ptr
<std::vector
<std::string
> >)>
46 explicit MimeTypeCollector(Profile
* profile
);
47 virtual ~MimeTypeCollector();
49 // Collects all mime types asynchronously for a vector of URLs and upon
50 // completion, calls the |callback|. It can be called only once.
51 void CollectForURLs(const std::vector
<storage::FileSystemURL
>& urls
,
52 const CompletionCallback
& callback
);
54 // Collects all mime types asynchronously for a vector of local file paths and
55 // upon completion, calls the |callback|. It can be called only once.
56 void CollectForLocalPaths(const std::vector
<base::FilePath
>& local_paths
,
57 const CompletionCallback
& callback
);
60 // Called, when the |index|-th input file (or URL) got processed.
61 void OnMimeTypeCollected(size_t index
, const std::string
& mime_type
);
64 scoped_ptr
<std::vector
<std::string
> > result_
;
66 CompletionCallback callback_
;
67 base::WeakPtrFactory
<MimeTypeCollector
> weak_ptr_factory_
;
69 DISALLOW_COPY_AND_ASSIGN(MimeTypeCollector
);
72 } // namespace app_file_handler_util
73 } // namespace extensions
75 #endif // CHROME_BROWSER_EXTENSIONS_API_FILE_HANDLERS_MIME_UTIL_H_