text: // Copyright (c) 2012 The Chromium Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  
  #ifndef PPAPI_PROXY_FILE_CHOOSER_RESOURCE_H_
  #define PPAPI_PROXY_FILE_CHOOSER_RESOURCE_H_
  
  #include <queue>
  #include <string>
  #include <vector>
  
  #include "ppapi/proxy/plugin_resource.h"
  #include "ppapi/proxy/ppapi_proxy_export.h"
  #include "ppapi/shared_impl/array_writer.h"
  #include "ppapi/shared_impl/tracked_callback.h"
  #include "ppapi/thunk/ppb_file_chooser_api.h"
  
  namespace ppapi {
  
  struct FileRefCreateInfo;
  
  namespace proxy {
  
  class PPAPI_PROXY_EXPORT FileChooserResource
      : public PluginResource,
        public NON_EXPORTED_BASE(thunk::PPB_FileChooser_API) {
   public:
    FileChooserResource(Connection connection,
                        PP_Instance instance,
                        PP_FileChooserMode_Dev mode,
                        const std::string& accept_types);
    virtual ~FileChooserResource();
  
    // Resource overrides.
    virtual thunk::PPB_FileChooser_API* AsPPB_FileChooser_API() OVERRIDE;
  
    // PPB_FileChooser_API.
    virtual int32_t Show(const PP_ArrayOutput& output,
                         scoped_refptr<TrackedCallback> callback) OVERRIDE;
    virtual int32_t ShowWithoutUserGesture(
        PP_Bool save_as,
        PP_Var suggested_file_name,
        const PP_ArrayOutput& output,
        scoped_refptr<TrackedCallback> callback) OVERRIDE;
    virtual int32_t Show0_5(scoped_refptr<TrackedCallback> callback) OVERRIDE;
    virtual PP_Resource GetNextChosenFile() OVERRIDE;
    virtual int32_t ShowWithoutUserGesture0_5(
        PP_Bool save_as,
        PP_Var suggested_file_name,
        scoped_refptr<TrackedCallback> callback) OVERRIDE;
  
    // Parses the accept string into the given vector.
    static void PopulateAcceptTypes(const std::string& input,
                                    std::vector<std::string>* output);
  
   private:
    void OnPluginMsgShowReply(
        const ResourceMessageReplyParams& params,
        const std::vector<FileRefCreateInfo>& chosen_files);
  
    int32_t ShowInternal(PP_Bool save_as,
                         const PP_Var& suggested_file_name,
                         scoped_refptr<TrackedCallback> callback);
  
    PP_FileChooserMode_Dev mode_;
    std::vector<std::string> accept_types_;
  
    // When using v0.6 of the API, contains the array output info.
    ArrayWriter output_;
  
    // When using v0.5 of the API, contains all files returned by the current
    // show callback that haven't yet been given to the plugin. The plugin will
    // repeatedly call us to get the next file, and we'll vend those out of this
    // queue, removing them when ownership has transferred to the plugin.
    std::queue<PP_Resource> file_queue_;
  
    scoped_refptr<TrackedCallback> callback_;
  
    DISALLOW_COPY_AND_ASSIGN(FileChooserResource);
  };
  
  }  // namespace proxy
  }  // namespace ppapi
  
  #endif  // PPAPI_PROXY_FILE_CHOOSER_RESOURCE_H_
  