1// Copyright (c) 2012 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 PPAPI_PROXY_FILE_CHOOSER_RESOURCE_H_
6#define PPAPI_PROXY_FILE_CHOOSER_RESOURCE_H_
7
8#include <queue>
9#include <string>
10#include <vector>
11
12#include "ppapi/proxy/plugin_resource.h"
13#include "ppapi/proxy/ppapi_proxy_export.h"
14#include "ppapi/shared_impl/array_writer.h"
15#include "ppapi/shared_impl/tracked_callback.h"
16#include "ppapi/thunk/ppb_file_chooser_api.h"
17
18namespace ppapi {
19
20struct FileRefCreateInfo;
21
22namespace proxy {
23
24class PPAPI_PROXY_EXPORT FileChooserResource
25    : public PluginResource,
26      public NON_EXPORTED_BASE(thunk::PPB_FileChooser_API) {
27 public:
28  FileChooserResource(Connection connection,
29                      PP_Instance instance,
30                      PP_FileChooserMode_Dev mode,
31                      const std::string& accept_types);
32  virtual ~FileChooserResource();
33
34  // Resource overrides.
35  virtual thunk::PPB_FileChooser_API* AsPPB_FileChooser_API() OVERRIDE;
36
37  // PPB_FileChooser_API.
38  virtual int32_t Show(const PP_ArrayOutput& output,
39                       scoped_refptr<TrackedCallback> callback) OVERRIDE;
40  virtual int32_t ShowWithoutUserGesture(
41      PP_Bool save_as,
42      PP_Var suggested_file_name,
43      const PP_ArrayOutput& output,
44      scoped_refptr<TrackedCallback> callback) OVERRIDE;
45  virtual int32_t Show0_5(scoped_refptr<TrackedCallback> callback) OVERRIDE;
46  virtual PP_Resource GetNextChosenFile() OVERRIDE;
47  virtual int32_t ShowWithoutUserGesture0_5(
48      PP_Bool save_as,
49      PP_Var suggested_file_name,
50      scoped_refptr<TrackedCallback> callback) OVERRIDE;
51
52  // Parses the accept string into the given vector.
53  static void PopulateAcceptTypes(const std::string& input,
54                                  std::vector<std::string>* output);
55
56 private:
57  void OnPluginMsgShowReply(
58      const ResourceMessageReplyParams& params,
59      const std::vector<FileRefCreateInfo>& chosen_files);
60
61  int32_t ShowInternal(PP_Bool save_as,
62                       const PP_Var& suggested_file_name,
63                       scoped_refptr<TrackedCallback> callback);
64
65  PP_FileChooserMode_Dev mode_;
66  std::vector<std::string> accept_types_;
67
68  // When using v0.6 of the API, contains the array output info.
69  ArrayWriter output_;
70
71  // When using v0.5 of the API, contains all files returned by the current
72  // show callback that haven't yet been given to the plugin. The plugin will
73  // repeatedly call us to get the next file, and we'll vend those out of this
74  // queue, removing them when ownership has transferred to the plugin.
75  std::queue<PP_Resource> file_queue_;
76
77  scoped_refptr<TrackedCallback> callback_;
78
79  DISALLOW_COPY_AND_ASSIGN(FileChooserResource);
80};
81
82}  // namespace proxy
83}  // namespace ppapi
84
85#endif  // PPAPI_PROXY_FILE_CHOOSER_RESOURCE_H_
86