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      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 FileRefCreateInfo;
     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<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