este-library-oldschool/este/net/chunkedpixelrequest.js

Library for github.com/steida/este.git

// Generated by github.com/steida/coffee2closure 900.1.18
/**
  @fileoverview Chunked pixel request. Payload is divided into max. 2kb
  chunks.
 */
goog.provide('este.net.ChunkedPixelRequest');
goog.provide('este.net.ChunkedPixelRequest.create');
goog.require('este.string');
goog.require('este.json');

/**
  @param {string} uri
  @param {Function} randomStringFactory
  @param {Function} srcCallback
  @constructor
 */
este.net.ChunkedPixelRequest = function(uri1, randomStringFactory, srcCallback1) {
  this.uri = uri1;
  this.randomStringFactory = randomStringFactory;
  this.srcCallback = srcCallback1;
}

/**
  @param {string} uri
  @return {este.net.ChunkedPixelRequest}
 */
este.net.ChunkedPixelRequest.create = function(uri) {
  var srcCallback;
  srcCallback = function(src) {
    var img;
    img = new Image(1, 1);
    img.src = src;
  };
  return new este.net.ChunkedPixelRequest(uri, goog.string.getRandomString, srcCallback);
};

/**
  http://support.microsoft.com/kb/208427
  @type {number}
 */
este.net.ChunkedPixelRequest.MAX_CHUNK_SIZE = 1900;

/**
  @type {string}
 */
este.net.ChunkedPixelRequest.prototype.uri = '';

/**
  @type {Function}
 */
este.net.ChunkedPixelRequest.prototype.randomStringFactory = null;

/**
  @type {Function}
 */
este.net.ChunkedPixelRequest.prototype.srcCallback = null;

/**
  @param {Object} payload
 */
este.net.ChunkedPixelRequest.prototype.send = function(payload) {
  var chunk, chunks, i, len, message, randomString, stringified;
  chunks = this.getChunks(payload);
  randomString = this.randomStringFactory();
  for (i = 0, len = chunks.length; i < len; i++) {
    chunk = chunks[i];
    message = {
      'u': randomString,
      'd': chunk.text,
      'i': chunk.index,
      't': chunk.total
    };
    stringified = este.json.stringify(message);
    this.srcCallback(this.uri + '?' + encodeURIComponent(stringified));
  }
};

/**
  @param {Object} payload
  @return {Array.<Object>}
  @protected
 */
este.net.ChunkedPixelRequest.prototype.getChunks = function(payload) {
  var str;
  str = este.json.stringify(payload);
  return este.string.chunkToObject(str, este.net.ChunkedPixelRequest.MAX_CHUNK_SIZE);
};