chrome/renderer/resources/extensions/sync_file_system_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 syncFileSystem API.
   6
   7 var binding = require('binding').Binding.create('syncFileSystem');
   8
   9 var eventBindings = require('event_bindings');
  10 var fileSystemNatives = requireNative('file_system_natives');
  11 var syncFileSystemNatives = requireNative('sync_file_system');
  12
  13 binding.registerCustomHook(function(bindingsAPI) {
  14   var apiFunctions = bindingsAPI.apiFunctions;
  15
  16   // Functions which take in an [instanceOf=FileEntry].
  17   function bindFileEntryFunction(functionName) {
  18     apiFunctions.setUpdateArgumentsPostValidate(
  19         functionName, function(entry, callback) {
  20       var fileSystemUrl = entry.toURL();
  21       return [fileSystemUrl, callback];
  22     });
  23   }
  24   $Array.forEach(['getFileStatus'], bindFileEntryFunction);
  25
  26   // Functions which take in a FileEntry array.
  27   function bindFileEntryArrayFunction(functionName) {
  28     apiFunctions.setUpdateArgumentsPostValidate(
  29         functionName, function(entries, callback) {
  30       var fileSystemUrlArray = [];
  31       for (var i=0; i < entries.length; i++) {
  32         $Array.push(fileSystemUrlArray, entries[i].toURL());
  33       }
  34       return [fileSystemUrlArray, callback];
  35     });
  36   }
  37   $Array.forEach(['getFileStatuses'], bindFileEntryArrayFunction);
  38
  39   // Functions which take in an [instanceOf=DOMFileSystem].
  40   function bindFileSystemFunction(functionName) {
  41     apiFunctions.setUpdateArgumentsPostValidate(
  42         functionName, function(filesystem, callback) {
  43       var fileSystemUrl = filesystem.root.toURL();
  44       return [fileSystemUrl, callback];
  45     });
  46   }
  47   $Array.forEach(['getUsageAndQuota'], bindFileSystemFunction);
  48
  49   // Functions which return an [instanceOf=DOMFileSystem].
  50   apiFunctions.setCustomCallback('requestFileSystem',
  51                                  function(name, request, response) {
  52     var result = null;
  53     if (response) {
  54       result = syncFileSystemNatives.GetSyncFileSystemObject(
  55           response.name, response.root);
  56     }
  57     if (request.callback)
  58       request.callback(result);
  59     request.callback = null;
  60   });
  61
  62   // Functions which return an array of FileStatusInfo object
  63   // which has [instanceOf=FileEntry].
  64   apiFunctions.setCustomCallback('getFileStatuses',
  65                                  function(name, request, response) {
  66     var results = [];
  67     if (response) {
  68       for (var i = 0; i < response.length; i++) {
  69         var result = {};
  70         var entry = response[i].entry;
  71         result.fileEntry = fileSystemNatives.GetFileEntry(
  72             entry.fileSystemType,
  73             entry.fileSystemName,
  74             entry.rootUrl,
  75             entry.filePath,
  76             entry.isDirectory);
  77         result.status = response[i].status;
  78         result.error = response[i].error;
  79         $Array.push(results, result);
  80       }
  81     }
  82     if (request.callback)
  83       request.callback(results);
  84     request.callback = null;
  85   });
  86 });
  87
  88 eventBindings.registerArgumentMassager(
  89     'syncFileSystem.onFileStatusChanged', function(args, dispatch) {
  90   // Make FileEntry object using all the base string fields.
  91   var fileEntry = fileSystemNatives.GetFileEntry(
  92       args[0].fileSystemType,
  93       args[0].fileSystemName,
  94       args[0].rootUrl,
  95       args[0].filePath,
  96       args[0].isDirectory);
  97
  98   // Combine into a single dictionary.
  99   var fileInfo = new Object();
 100   fileInfo.fileEntry = fileEntry;
 101   fileInfo.status = args[1];
 102   if (fileInfo.status == "synced") {
 103     fileInfo.action = args[2];
 104     fileInfo.direction = args[3];
 105   }
 106   dispatch([fileInfo]);
 107 });
 108
 109 exports.binding = binding.generate();