search_operation.h revision 868fa2fe829687343ffae624259930155e16dbd8 
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.
4
5#ifndef CHROME_BROWSER_CHROMEOS_DRIVE_FILE_SYSTEM_SEARCH_OPERATION_H_
6#define CHROME_BROWSER_CHROMEOS_DRIVE_FILE_SYSTEM_SEARCH_OPERATION_H_
7
8#include "base/basictypes.h"
9#include "base/memory/ref_counted.h"
10#include "base/memory/scoped_ptr.h"
11#include "base/memory/weak_ptr.h"
12#include "chrome/browser/chromeos/drive/file_errors.h"
13#include "chrome/browser/chromeos/drive/file_system_interface.h"
14#include "chrome/browser/google_apis/gdata_errorcode.h"
15
16class GURL;
17
18namespace base {
19class SequencedTaskRunner;
20}  // namespace base
21
22namespace google_apis {
23class ResourceEntry;
24class ResourceList;
25}  // namespace google_apis
26
27namespace drive {
28
29class JobScheduler;
30
31namespace internal {
32class ResourceMetadata;
33}  // namespace internal
34
35namespace file_system {
36
37// This class encapsulates the drive Search function. It is responsible for
38// sending the request to the drive API.
39class SearchOperation {
40 public:
41  SearchOperation(base::SequencedTaskRunner* blocking_task_runner,
42                  JobScheduler* scheduler,
43                  internal::ResourceMetadata* metadata);
44  ~SearchOperation();
45
46  // Performs server side content search operation for |search_query|.  If
47  // |next_url| is set, this is the search result url that will be fetched.
48  // Upon completion, |callback| will be called with the result.  This is
49  // implementation of FileSystemInterface::Search() method.
50  //
51  // |callback| must not be null.
52  void Search(const std::string& search_query,
53              const GURL& next_url,
54              const SearchCallback& callback);
55
56 private:
57  // Part of Search(). This is called after the ResourceList is fetched from
58  // the server.
59  void SearchAfterGetResourceList(
60      const SearchCallback& callback,
61      google_apis::GDataErrorCode gdata_error,
62      scoped_ptr<google_apis::ResourceList> resource_list);
63
64  // Part of Search(). This is called after the RefreshEntryOnBlockingPool
65  // is completed.
66  void SearchAfterRefreshEntry(
67      const SearchCallback& callback,
68      const GURL& next_url,
69      scoped_ptr<std::vector<SearchResultInfo> > result,
70      FileError error);
71
72  scoped_refptr<base::SequencedTaskRunner> blocking_task_runner_;
73  JobScheduler* scheduler_;
74  internal::ResourceMetadata* metadata_;
75
76  // Note: This should remain the last member so it'll be destroyed and
77  // invalidate the weak pointers before any other members are destroyed.
78  base::WeakPtrFactory<SearchOperation> weak_ptr_factory_;
79  DISALLOW_COPY_AND_ASSIGN(SearchOperation);
80};
81
82}  // namespace file_system
83}  // namespace drive
84
85#endif  // CHROME_BROWSER_CHROMEOS_DRIVE_FILE_SYSTEM_SEARCH_OPERATION_H_
86