/* FileSaver.js
* A saveAs() FileSaver implementation.
* 1.3.2
* 2016-06-16 18:25:19
*
  * By Eli Grey, http://eligrey.com
* License: MIT
*   See https://github.com/eligrey/FileSaver.js/blob/master/LICENSE.md
*/
  
  /*global self */
  /*jslint bitwise: true, indent: 4, laxbreak: true, laxcomma: true, smarttabs: true, plusplus: true */
  
  /*! @source http://purl.eligrey.com/github/FileSaver.js/blob/master/FileSaver.js */
  
  var saveAs = saveAs || (function(view) {
    "use strict";
    // IE <10 is explicitly unsupported
    if (typeof view === "undefined" || typeof navigator !== "undefined" && /MSIE [1-9]\./.test(navigator.userAgent)) {
      return;
    }
    var
    doc = view.document
    // only get URL when necessary in case Blob.js hasn't overridden it yet
    , get_URL = function() {
    return view.URL || view.webkitURL || view;
    }
    , save_link = doc.createElementNS("http://www.w3.org/1999/xhtml", "a")
    , can_use_save_link = "download" in save_link
    , click = function(node) {
    var event = new MouseEvent("click");
    node.dispatchEvent(event);
    }
    , is_safari = /constructor/i.test(view.HTMLElement) || view.safari
    , is_chrome_ios =/CriOS\/[\d]+/.test(navigator.userAgent)
    , throw_outside = function(ex) {
    (view.setImmediate || view.setTimeout)(function() {
    throw ex;
    }, 0);
    }
    , force_saveable_type = "application/octet-stream"
    // the Blob API is fundamentally broken as there is no "downloadfinished" event to subscribe to
    , arbitrary_revoke_timeout = 1000 * 40 // in ms
    , revoke = function(file) {
    var revoker = function() {
    if (typeof file === "string") { // file is an object URL
    get_URL().revokeObjectURL(file);
    } else { // file is a File
    file.remove();
    }
    };
    setTimeout(revoker, arbitrary_revoke_timeout);
    }
    , dispatch = function(filesaver, event_types, event) {
    event_types = [].concat(event_types);
    var i = event_types.length;
    while (i--) {
    var listener = filesaver["on" + event_types[i]];
    if (typeof listener === "function") {
    try {
    listener.call(filesaver, event || filesaver);
    } catch (ex) {
    throw_outside(ex);
    }
    }
    }
    }
    , auto_bom = function(blob) {
    // prepend BOM for UTF-8 XML and text/* types (including HTML)
    // note: your browser will automatically convert UTF-16 U+FEFF to EF BB BF
    if (/^\s*(?:text\/\S*|application\/xml|\S*\/\S*\+xml)\s*;.*charset\s*=\s*utf-8/i.test(blob.type)) {
    return new Blob([String.fromCharCode(0xFEFF), blob], {type: blob.type});
    }
    return blob;
    }
    , FileSaver = function(blob, name, no_auto_bom) {
    if (!no_auto_bom) {
    blob = auto_bom(blob);
    }
    // First try a.download, then web filesystem, then object URLs
    var
    filesaver = this
    , type = blob.type
    , force = type === force_saveable_type
    , object_url
    , dispatch_all = function() {
    dispatch(filesaver, "writestart progress write writeend".split(" "));
    }
    // on any filesys errors revert to saving with object URLs
    , fs_error = function() {
    if ((is_chrome_ios || (force && is_safari)) && view.FileReader) {
    // Safari doesn't allow downloading of blob urls
    var reader = new FileReader();
    reader.onloadend = function() {
      var url = is_chrome_ios ? reader.result : reader.result.replace(/^data:[^;]*;/, 'data:attachment/file;');
      var popup = view.open(url, '_blank');
      if(!popup) view.location.href = url;
      url=undefined; // release reference before dispatching
      filesaver.readyState = filesaver.DONE;
      dispatch_all();
    };
    reader.readAsDataURL(blob);
    filesaver.readyState = filesaver.INIT;
    return;
    }
    // don't create more object URLs than needed
    if (!object_url) {
    object_url = get_URL().createObjectURL(blob);
    }
    if (force) {
    view.location.href = object_url;
    } else {
    var opened = view.open(object_url, "_blank");
    if (!opened) {
    // Apple does not allow window.open, see https://developer.apple.com/library/safari/documentation/Tools/Conceptual/SafariExtensionGuide/WorkingwithWindowsandTabs/WorkingwithWindowsandTabs.html
    view.location.href = object_url;
    }
    }
    filesaver.readyState = filesaver.DONE;
    dispatch_all();
    revoke(object_url);
    }
    ;
    filesaver.readyState = filesaver.INIT;
    
    if (can_use_save_link) {
    object_url = get_URL().createObjectURL(blob);
    setTimeout(function() {
    save_link.href = object_url;
    save_link.download = name;
    click(save_link);
    dispatch_all();
    revoke(object_url);
    filesaver.readyState = filesaver.DONE;
    });
    return;
    }
    
    fs_error();
    }
    , FS_proto = FileSaver.prototype
    , saveAs = function(blob, name, no_auto_bom) {
    return new FileSaver(blob, name || blob.name || "download", no_auto_bom);
    }
    ;
    // IE 10+ (native saveAs)
    if (typeof navigator !== "undefined" && navigator.msSaveOrOpenBlob) {
    return function(blob, name, no_auto_bom) {
    name = name || blob.name || "download";
    
    if (!no_auto_bom) {
    blob = auto_bom(blob);
    }
    return navigator.msSaveOrOpenBlob(blob, name);
    };
    }
    
    FS_proto.abort = function(){};
    FS_proto.readyState = FS_proto.INIT = 0;
    FS_proto.WRITING = 1;
    FS_proto.DONE = 2;
    
    FS_proto.error =
    FS_proto.onwritestart =
    FS_proto.onprogress =
    FS_proto.onwrite =
    FS_proto.onabort =
    FS_proto.onerror =
    FS_proto.onwriteend =
    null;
    
    return saveAs;
    }(
    typeof self !== "undefined" && self
    || typeof window !== "undefined" && window
    || this.content
    ));
    // `self` is undefined in Firefox for Android content script context
    // while `this` is nsIContentFrameMessageManager
    // with an attribute `content` that corresponds to the window
    
    if (typeof module !== "undefined" && module.exports) {
    module.exports.saveAs = saveAs;
    } else if ((typeof define !== "undefined" && define !== null) && (define.amd !== null)) {
    define("FileSaver.js", function() {
    return saveAs;
    });
    }