content/renderer/pepper/pepper_file_chooser_host.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 "content/renderer/pepper/pepper_file_chooser_host.h"
   6
   7 #include "base/files/file_path.h"
   8 #include "base/strings/utf_string_conversions.h"
   9 #include "content/public/renderer/renderer_ppapi_host.h"
  10 #include "content/renderer/pepper/pepper_file_ref_renderer_host.h"
  11 #include "content/renderer/render_view_impl.h"
  12 #include "ppapi/c/pp_errors.h"
  13 #include "ppapi/host/dispatch_host_message.h"
  14 #include "ppapi/host/ppapi_host.h"
  15 #include "ppapi/proxy/ppapi_messages.h"
  16 #include "third_party/WebKit/public/platform/WebCString.h"
  17 #include "third_party/WebKit/public/platform/WebString.h"
  18 #include "third_party/WebKit/public/platform/WebVector.h"
  19 #include "third_party/WebKit/public/web/WebFileChooserCompletion.h"
  20 #include "third_party/WebKit/public/web/WebFileChooserParams.h"
  21
  22 namespace content {
  23
  24 class PepperFileChooserHost::CompletionHandler
  25     : public blink::WebFileChooserCompletion {
  26  public:
  27   explicit CompletionHandler(const base::WeakPtr<PepperFileChooserHost>& host)
  28       : host_(host) {}
  29
  30   virtual ~CompletionHandler() {}
  31
  32   virtual void didChooseFile(
  33       const blink::WebVector<blink::WebString>& file_names) {
  34     if (host_.get()) {
  35       std::vector<PepperFileChooserHost::ChosenFileInfo> files;
  36       for (size_t i = 0; i < file_names.size(); i++) {
  37         files.push_back(PepperFileChooserHost::ChosenFileInfo(
  38             file_names[i].utf8(), std::string()));
  39       }
  40       host_->StoreChosenFiles(files);
  41     }
  42
  43     // It is the responsibility of this method to delete the instance.
  44     delete this;
  45   }
  46   virtual void didChooseFile(
  47       const blink::WebVector<SelectedFileInfo>& file_names) {
  48     if (host_.get()) {
  49       std::vector<PepperFileChooserHost::ChosenFileInfo> files;
  50       for (size_t i = 0; i < file_names.size(); i++) {
  51         files.push_back(PepperFileChooserHost::ChosenFileInfo(
  52             file_names[i].path.utf8(), file_names[i].displayName.utf8()));
  53       }
  54       host_->StoreChosenFiles(files);
  55     }
  56
  57     // It is the responsibility of this method to delete the instance.
  58     delete this;
  59   }
  60
  61  private:
  62   base::WeakPtr<PepperFileChooserHost> host_;
  63
  64   DISALLOW_COPY_AND_ASSIGN(CompletionHandler);
  65 };
  66
  67 PepperFileChooserHost::ChosenFileInfo::ChosenFileInfo(
  68     const std::string& path,
  69     const std::string& display_name)
  70     : path(path), display_name(display_name) {}
  71
  72 PepperFileChooserHost::PepperFileChooserHost(RendererPpapiHost* host,
  73                                              PP_Instance instance,
  74                                              PP_Resource resource)
  75     : ResourceHost(host->GetPpapiHost(), instance, resource),
  76       renderer_ppapi_host_(host),
  77       handler_(NULL),
  78       weak_factory_(this) {}
  79
  80 PepperFileChooserHost::~PepperFileChooserHost() {}
  81
  82 int32_t PepperFileChooserHost::OnResourceMessageReceived(
  83     const IPC::Message& msg,
  84     ppapi::host::HostMessageContext* context) {
  85   PPAPI_BEGIN_MESSAGE_MAP(PepperFileChooserHost, msg)
  86     PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_FileChooser_Show, OnShow)
  87   PPAPI_END_MESSAGE_MAP()
  88   return PP_ERROR_FAILED;
  89 }
  90
  91 void PepperFileChooserHost::StoreChosenFiles(
  92     const std::vector<ChosenFileInfo>& files) {
  93   std::vector<IPC::Message> create_msgs;
  94   std::vector<base::FilePath> file_paths;
  95   std::vector<std::string> display_names;
  96   for (size_t i = 0; i < files.size(); i++) {
  97     base::FilePath file_path = base::FilePath::FromUTF8Unsafe(files[i].path);
  98     file_paths.push_back(file_path);
  99     create_msgs.push_back(PpapiHostMsg_FileRef_CreateForRawFS(file_path));
 100     display_names.push_back(files[i].display_name);
 101   }
 102
 103   if (!files.empty()) {
 104     renderer_ppapi_host_->CreateBrowserResourceHosts(
 105         pp_instance(),
 106         create_msgs,
 107         base::Bind(&PepperFileChooserHost::DidCreateResourceHosts,
 108                    weak_factory_.GetWeakPtr(),
 109                    file_paths,
 110                    display_names));
 111   } else {
 112     reply_context_.params.set_result(PP_ERROR_USERCANCEL);
 113     std::vector<ppapi::FileRefCreateInfo> chosen_files;
 114     host()->SendReply(reply_context_,
 115                       PpapiPluginMsg_FileChooser_ShowReply(chosen_files));
 116     reply_context_ = ppapi::host::ReplyMessageContext();
 117     handler_ = NULL;  // Handler deletes itself.
 118   }
 119 }
 120
 121 int32_t PepperFileChooserHost::OnShow(
 122     ppapi::host::HostMessageContext* context,
 123     bool save_as,
 124     bool open_multiple,
 125     const std::string& suggested_file_name,
 126     const std::vector<std::string>& accept_mime_types) {
 127   if (handler_)
 128     return PP_ERROR_INPROGRESS;  // Already pending.
 129
 130   if (!host()->permissions().HasPermission(
 131           ppapi::PERMISSION_BYPASS_USER_GESTURE) &&
 132       !renderer_ppapi_host_->HasUserGesture(pp_instance())) {
 133     return PP_ERROR_NO_USER_GESTURE;
 134   }
 135
 136   blink::WebFileChooserParams params;
 137   if (save_as) {
 138     params.saveAs = true;
 139     params.initialValue = blink::WebString::fromUTF8(
 140         suggested_file_name.data(), suggested_file_name.size());
 141   } else {
 142     params.multiSelect = open_multiple;
 143   }
 144   std::vector<blink::WebString> mime_types(accept_mime_types.size());
 145   for (size_t i = 0; i < accept_mime_types.size(); i++) {
 146     mime_types[i] = blink::WebString::fromUTF8(accept_mime_types[i].data(),
 147                                                accept_mime_types[i].size());
 148   }
 149   params.acceptTypes = mime_types;
 150   params.directory = false;
 151   params.needLocalPath = true;
 152
 153   handler_ = new CompletionHandler(AsWeakPtr());
 154   RenderViewImpl* render_view = static_cast<RenderViewImpl*>(
 155       renderer_ppapi_host_->GetRenderViewForInstance(pp_instance()));
 156   if (!render_view || !render_view->runFileChooser(params, handler_)) {
 157     delete handler_;
 158     handler_ = NULL;
 159     return PP_ERROR_NOACCESS;
 160   }
 161
 162   reply_context_ = context->MakeReplyMessageContext();
 163   return PP_OK_COMPLETIONPENDING;
 164 }
 165
 166 void PepperFileChooserHost::DidCreateResourceHosts(
 167     const std::vector<base::FilePath>& file_paths,
 168     const std::vector<std::string>& display_names,
 169     const std::vector<int>& browser_ids) {
 170   DCHECK(file_paths.size() == display_names.size());
 171   DCHECK(file_paths.size() == browser_ids.size());
 172
 173   std::vector<ppapi::FileRefCreateInfo> chosen_files;
 174   for (size_t i = 0; i < browser_ids.size(); ++i) {
 175     PepperFileRefRendererHost* renderer_host = new PepperFileRefRendererHost(
 176         renderer_ppapi_host_, pp_instance(), 0, file_paths[i]);
 177     int renderer_id =
 178         renderer_ppapi_host_->GetPpapiHost()->AddPendingResourceHost(
 179             scoped_ptr<ppapi::host::ResourceHost>(renderer_host));
 180     ppapi::FileRefCreateInfo info = ppapi::MakeExternalFileRefCreateInfo(
 181         file_paths[i], display_names[i], browser_ids[i], renderer_id);
 182     chosen_files.push_back(info);
 183   }
 184
 185   reply_context_.params.set_result(PP_OK);
 186   host()->SendReply(reply_context_,
 187                     PpapiPluginMsg_FileChooser_ShowReply(chosen_files));
 188   reply_context_ = ppapi::host::ReplyMessageContext();
 189   handler_ = NULL;  // Handler deletes itself.
 190 }
 191
 192 }  // namespace content