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 pageCapture API.
6
7var binding = require('binding').Binding.create('pageCapture');
8
9var handleUncaughtException = require('uncaught_exception_handler').handle;
10var pageCaptureNatives = requireNative('page_capture');
11var CreateBlob = pageCaptureNatives.CreateBlob;
12var SendResponseAck = pageCaptureNatives.SendResponseAck;
13
14binding.registerCustomHook(function(bindingsAPI) {
15  var apiFunctions = bindingsAPI.apiFunctions;
16
17  apiFunctions.setCustomCallback('saveAsMHTML',
18                                 function(name, request, response) {
19    var callback = request.callback;
20    request.callback = null;
21    if (response)
22      response = CreateBlob(response.mhtmlFilePath, response.mhtmlFileLength);
23
24    try {
25      callback(response);
26    } catch (e) {
27      handleUncaughtException(
28          'Error in chrome.pageCapture.saveAsMHTML callback', e, request.stack);
29    } finally {
30      // Notify the browser. Now that the blob is referenced from JavaScript,
31      // the browser can drop its reference to it.
32      SendResponseAck(request.id);
33    }
34  });
35});
36
37exports.binding = binding.generate();
38