ppapi/proxy/file_chooser_resource.cc

   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/proxy/file_chooser_resource.h"
   6
   7 #include "base/bind.h"
   8 #include "base/strings/string_split.h"
   9 #include "ipc/ipc_message.h"
  10 #include "ppapi/c/pp_errors.h"
  11 #include "ppapi/proxy/dispatch_reply_message.h"
  12 #include "ppapi/proxy/ppapi_messages.h"
  13 #include "ppapi/proxy/ppb_file_ref_proxy.h"
  14 #include "ppapi/shared_impl/var.h"
  15
  16 namespace ppapi {
  17 namespace proxy {
  18
  19 FileChooserResource::FileChooserResource(Connection connection,
  20                                          PP_Instance instance,
  21                                          PP_FileChooserMode_Dev mode,
  22                                          const std::string& accept_types)
  23     : PluginResource(connection, instance),
  24       mode_(mode) {
  25   PopulateAcceptTypes(accept_types, &accept_types_);
  26 }
  27
  28 FileChooserResource::~FileChooserResource() {
  29 }
  30
  31 thunk::PPB_FileChooser_API* FileChooserResource::AsPPB_FileChooser_API() {
  32   return this;
  33 }
  34
  35 int32_t FileChooserResource::Show(const PP_ArrayOutput& output,
  36                                   scoped_refptr<TrackedCallback> callback) {
  37   return ShowWithoutUserGesture(PP_FALSE, PP_MakeUndefined(), output, callback);
  38 }
  39
  40 int32_t FileChooserResource::ShowWithoutUserGesture(
  41     PP_Bool save_as,
  42     PP_Var suggested_file_name,
  43     const PP_ArrayOutput& output,
  44     scoped_refptr<TrackedCallback> callback) {
  45   int32_t result = ShowInternal(save_as, suggested_file_name, callback);
  46   if (result == PP_OK_COMPLETIONPENDING)
  47     output_.set_pp_array_output(output);
  48   return result;
  49 }
  50
  51 int32_t FileChooserResource::Show0_5(scoped_refptr<TrackedCallback> callback) {
  52   return ShowInternal(PP_FALSE, PP_MakeUndefined(), callback);
  53 }
  54
  55 PP_Resource FileChooserResource::GetNextChosenFile() {
  56  if (file_queue_.empty())
  57     return 0;
  58
  59   // Return the next resource in the queue. It will already have been addrefed
  60   // (they're currently owned by the FileChooser) and returning it transfers
  61   // ownership of that reference to the plugin.
  62   PP_Resource next = file_queue_.front();
  63   file_queue_.pop();
  64   return next;
  65 }
  66
  67 int32_t FileChooserResource::ShowWithoutUserGesture0_5(
  68     PP_Bool save_as,
  69     PP_Var suggested_file_name,
  70     scoped_refptr<TrackedCallback> callback) {
  71   return ShowInternal(save_as, suggested_file_name, callback);
  72 }
  73
  74 // static
  75 void FileChooserResource::PopulateAcceptTypes(
  76     const std::string& input,
  77     std::vector<std::string>* output) {
  78   if (input.empty())
  79     return;
  80
  81   std::vector<std::string> type_list;
  82   base::SplitString(input, ',', &type_list);
  83   output->reserve(type_list.size());
  84
  85   for (size_t i = 0; i < type_list.size(); ++i) {
  86     std::string type = type_list[i];
  87     TrimWhitespaceASCII(type, TRIM_ALL, &type);
  88
  89     // If the type is a single character, it definitely cannot be valid. In the
  90     // case of a file extension it would be a single ".". In the case of a MIME
  91     // type it would just be a "/".
  92     if (type.length() < 2)
  93       continue;
  94     if (type.find_first_of('/') == std::string::npos && type[0] != '.')
  95       continue;
  96     StringToLowerASCII(&type);
  97     output->push_back(type);
  98   }
  99 }
 100
 101 void FileChooserResource::OnPluginMsgShowReply(
 102     const ResourceMessageReplyParams& params,
 103     const std::vector<PPB_FileRef_CreateInfo>& chosen_files) {
 104   if (output_.is_valid()) {
 105     // Using v0.6 of the API with the output array.
 106     std::vector<PP_Resource> files;
 107     for (size_t i = 0; i < chosen_files.size(); i++)
 108       files.push_back(PPB_FileRef_Proxy::DeserializeFileRef(chosen_files[i]));
 109     output_.StoreResourceVector(files);
 110   } else {
 111     // Convert each of the passed in file infos to resources. These will be
 112     // owned by the FileChooser object until they're passed to the plugin.
 113     DCHECK(file_queue_.empty());
 114     for (size_t i = 0; i < chosen_files.size(); i++) {
 115       file_queue_.push(PPB_FileRef_Proxy::DeserializeFileRef(
 116           chosen_files[i]));
 117     }
 118   }
 119
 120   // Notify the plugin of the new data.
 121   callback_->Run(params.result());
 122   // DANGER: May delete |this|!
 123 }
 124
 125 int32_t FileChooserResource::ShowInternal(
 126     PP_Bool save_as,
 127     const PP_Var& suggested_file_name,
 128     scoped_refptr<TrackedCallback> callback) {
 129   if (TrackedCallback::IsPending(callback_))
 130     return PP_ERROR_INPROGRESS;
 131
 132   if (!sent_create_to_renderer())
 133     SendCreate(RENDERER, PpapiHostMsg_FileChooser_Create());
 134
 135   callback_ = callback;
 136   StringVar* sugg_str = StringVar::FromPPVar(suggested_file_name);
 137
 138   PpapiHostMsg_FileChooser_Show msg(
 139         PP_ToBool(save_as),
 140         mode_ == PP_FILECHOOSERMODE_OPENMULTIPLE,
 141         sugg_str ? sugg_str->value() : std::string(),
 142         accept_types_);
 143   Call<PpapiPluginMsg_FileChooser_ShowReply>(RENDERER, msg,
 144       base::Bind(&FileChooserResource::OnPluginMsgShowReply, this));
 145   return PP_OK_COMPLETIONPENDING;
 146 }
 147
 148 }  // namespace proxy
 149 }  // namespace ppapi