ppapi/proxy/file_chooser_resource.h

   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
  18 namespace ppapi {
  19
  20 struct PPB_FileRef_CreateInfo;
  21
  22 namespace proxy {
  23
  24 class 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<PPB_FileRef_CreateInfo>& 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_