chrome/renderer/resources/extensions/file_browser_handler_custom_bindings.js

   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 // Custom binding for the fileBrowserHandler API.
   6
   7 var binding = require('binding').Binding.create('fileBrowserHandler');
   8
   9 var eventBindings = require('event_bindings');
  10 var fileBrowserNatives = requireNative('file_browser_handler');
  11 var GetExternalFileEntry = fileBrowserNatives.GetExternalFileEntry;
  12 var fileBrowserHandlerInternal = require('binding').Binding.create(
  13     'fileBrowserHandlerInternal').generate();
  14
  15 eventBindings.registerArgumentMassager('fileBrowserHandler.onExecute',
  16     function(args, dispatch) {
  17   if (args.length < 2) {
  18     dispatch(args);
  19     return;
  20   }
  21   var fileList = args[1].entries;
  22   if (!fileList) {
  23     dispatch(args);
  24     return;
  25   }
  26   // The second parameter for this event's payload is file definition
  27   // dictionary that we used to reconstruct File API's Entry instance
  28   // here.
  29   for (var i = 0; i < fileList.length; i++)
  30     fileList[i] = GetExternalFileEntry(fileList[i]);
  31   dispatch(args);
  32 });
  33
  34 binding.registerCustomHook(function(bindingsAPI) {
  35   var apiFunctions = bindingsAPI.apiFunctions;
  36
  37   apiFunctions.setHandleRequest('selectFile',
  38                                 function(selectionParams, callback) {
  39     function internalCallback(externalCallback, internalResult) {
  40       if (!externalCallback)
  41         return;
  42       var result = undefined;
  43       if (internalResult) {
  44         result = { success: internalResult.success, entry: null };
  45         if (internalResult.success)
  46           result.entry = GetExternalFileEntry(internalResult.entry);
  47       }
  48
  49       externalCallback(result);
  50     }
  51
  52     return fileBrowserHandlerInternal.selectFile(
  53         selectionParams, $Function.bind(internalCallback, null, callback));
  54   });
  55 });
  56
  57 exports.binding = binding.generate();