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#include "ppapi/cpp/dev/file_chooser_dev.h"
6
7#include <string.h>
8
9#include "ppapi/c/dev/ppb_file_chooser_dev.h"
10#include "ppapi/c/pp_errors.h"
11#include "ppapi/cpp/completion_callback.h"
12#include "ppapi/cpp/file_ref.h"
13#include "ppapi/cpp/instance_handle.h"
14#include "ppapi/cpp/module.h"
15#include "ppapi/cpp/module_impl.h"
16
17namespace pp {
18
19namespace {
20
21template <> const char* interface_name<PPB_FileChooser_Dev_0_5>() {
22  return PPB_FILECHOOSER_DEV_INTERFACE_0_5;
23}
24
25template <> const char* interface_name<PPB_FileChooser_Dev_0_6>() {
26  return PPB_FILECHOOSER_DEV_INTERFACE_0_6;
27}
28
29}  // namespace
30
31FileChooser_Dev::FileChooser_Dev(const InstanceHandle& instance,
32                                 PP_FileChooserMode_Dev mode,
33                                 const Var& accept_types) {
34  if (has_interface<PPB_FileChooser_Dev_0_6>()) {
35    PassRefFromConstructor(get_interface<PPB_FileChooser_Dev_0_6>()->Create(
36        instance.pp_instance(), mode, accept_types.pp_var()));
37  } else if (has_interface<PPB_FileChooser_Dev_0_5>()) {
38    PassRefFromConstructor(get_interface<PPB_FileChooser_Dev_0_5>()->Create(
39        instance.pp_instance(), mode, accept_types.pp_var()));
40  }
41}
42
43FileChooser_Dev::FileChooser_Dev(const FileChooser_Dev& other)
44    : Resource(other) {
45}
46
47int32_t FileChooser_Dev::Show(
48    const CompletionCallbackWithOutput< std::vector<FileRef> >& callback) {
49  if (has_interface<PPB_FileChooser_Dev_0_6>()) {
50    return get_interface<PPB_FileChooser_Dev_0_6>()->Show(
51        pp_resource(),
52        callback.output(),
53        callback.pp_completion_callback());
54  }
55  if (has_interface<PPB_FileChooser_Dev_0_5>()) {
56    // Data for our callback wrapper. The callback handler will delete it.
57    ChooseCallbackData0_5* data = new ChooseCallbackData0_5;
58    data->file_chooser = pp_resource();
59    data->output = callback.output();
60    data->original_callback = callback.pp_completion_callback();
61
62    return get_interface<PPB_FileChooser_Dev_0_5>()->Show(
63        pp_resource(), PP_MakeCompletionCallback(&CallbackConverter, data));
64  }
65  return callback.MayForce(PP_ERROR_NOINTERFACE);
66}
67
68// static
69void FileChooser_Dev::CallbackConverter(void* user_data, int32_t result) {
70  ChooseCallbackData0_5* data = static_cast<ChooseCallbackData0_5*>(user_data);
71
72  // Get all of the selected file resources using the iterator API.
73  std::vector<PP_Resource> selected_files;
74  if (result == PP_OK) {
75    const PPB_FileChooser_Dev_0_5* chooser =
76        get_interface<PPB_FileChooser_Dev_0_5>();
77    while (PP_Resource cur = chooser->GetNextChosenFile(data->file_chooser))
78      selected_files.push_back(cur);
79  }
80
81  // Need to issue the "GetDataBuffer" even for error cases & when the
82  // number of items is 0.
83  void* output_buf = data->output.GetDataBuffer(
84      data->output.user_data,
85      selected_files.size(), sizeof(PP_Resource));
86  if (output_buf) {
87    if (!selected_files.empty()) {
88      memcpy(output_buf, &selected_files[0],
89             sizeof(PP_Resource) * selected_files.size());
90    }
91  } else {
92    // Error allocating, need to free the resource IDs.
93    for (size_t i = 0; i < selected_files.size(); i++)
94      Module::Get()->core()->ReleaseResource(selected_files[i]);
95  }
96
97  // Now execute the original callback.
98  PP_RunCompletionCallback(&data->original_callback, result);
99  delete data;
100}
101
102}  // namespace pp
103