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+//download.js v3.0, by dandavis; 2008-2014. [CCBY2] see http://danml.com/download.html for tests/usage
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+// v1 landed a FF+Chrome compat way of downloading strings to local un-named files, upgraded to use a hidden frame and optional mime
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+// v2 added named files via a[download], msSaveBlob, IE (10+) support, and window.URL support for larger+faster saves than dataURLs
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+// v3 added dataURL and Blob Input, bind-toggle arity, and legacy dataURL fallback was improved with force-download mime and base64 support
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+
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+// data can be a string, Blob, File, or dataURL
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+
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+
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+
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+
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+function download(data, strFileName, strMimeType) {
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+
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+ var self = window, // this script is only for browsers anyway...
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+ u = "application/octet-stream", // this default mime also triggers iframe downloads
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+ m = strMimeType || u,
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+ x = data,
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+ D = document,
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+ a = D.createElement("a"),
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+ z = function(a){return String(a);},
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+
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+
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+ B = self.Blob || self.MozBlob || self.WebKitBlob || z,
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+ BB = self.MSBlobBuilder || self.WebKitBlobBuilder || self.BlobBuilder,
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+ fn = strFileName || "download",
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+ blob,
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+ b,
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+ ua,
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+ fr;
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+
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+ //if(typeof B.bind === 'function' ){ B=B.bind(self); }
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+
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+ if(String(this)==="true"){ //reverse arguments, allowing download.bind(true, "text/xml", "export.xml") to act as a callback
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+ x=[x, m];
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+ m=x[0];
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+ x=x[1];
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+ }
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+
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+
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+
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+ //go ahead and download dataURLs right away
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+ if(String(x).match(/^data\:[\w+\-]+\/[\w+\-]+[,;]/)){
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+ return navigator.msSaveBlob ? // IE10 can't do a[download], only Blobs:
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+ navigator.msSaveBlob(d2b(x), fn) :
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+ saver(x) ; // everyone else can save dataURLs un-processed
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+ }//end if dataURL passed?
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+
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+ try{
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+
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+ blob = x instanceof B ?
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+ x :
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+ new B([x], {type: m}) ;
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+ }catch(y){
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+ if(BB){
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+ b = new BB();
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+ b.append([x]);
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+ blob = b.getBlob(m); // the blob
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+ }
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+
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+ }
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+
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+
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+
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+ function d2b(u) {
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+ var p= u.split(/[:;,]/),
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+ t= p[1],
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+ dec= p[2] == "base64" ? atob : decodeURIComponent,
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+ bin= dec(p.pop()),
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+ mx= bin.length,
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+ i= 0,
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+ uia= new Uint8Array(mx);
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+
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+ for(i;i<mx;++i) uia[i]= bin.charCodeAt(i);
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+
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+ return new B([uia], {type: t});
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+ }
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+
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+ function saver(url, winMode){
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+
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+
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+ if ('download' in a) { //html5 A[download]
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+ a.href = url;
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+ a.setAttribute("download", fn);
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+ a.innerHTML = "downloading...";
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+ D.body.appendChild(a);
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+ setTimeout(function() {
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+ a.click();
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+ D.body.removeChild(a);
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+ if(winMode===true){setTimeout(function(){ self.URL.revokeObjectURL(a.href);}, 250 );}
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+ }, 66);
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+ return true;
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+ }
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+
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+ //do iframe dataURL download (old ch+FF):
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+ var f = D.createElement("iframe");
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+ D.body.appendChild(f);
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+ if(!winMode){ // force a mime that will download:
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+ url="data:"+url.replace(/^data:([\w\/\-\+]+)/, u);
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+ }
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+
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+
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+ f.src = url;
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+ setTimeout(function(){ D.body.removeChild(f); }, 333);
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+
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+ }//end saver
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+
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+
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+ if (navigator.msSaveBlob) { // IE10+ : (has Blob, but not a[download] or URL)
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+ return navigator.msSaveBlob(blob, fn);
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+ }
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+
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+ if(self.URL){ // simple fast and modern way using Blob and URL:
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+ saver(self.URL.createObjectURL(blob), true);
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+ }else{
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+ // handle non-Blob()+non-URL browsers:
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+ if(typeof blob === "string" || blob.constructor===z ){
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+ try{
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+ return saver( "data:" + m + ";base64," + self.btoa(blob) );
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+ }catch(y){
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+ return saver( "data:" + m + "," + encodeURIComponent(blob) );
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+ }
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+ }
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+
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+ // Blob but not URL:
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+ fr=new FileReader();
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+ fr.onload=function(e){
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+ saver(this.result);
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+ };
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+ fr.readAsDataURL(blob);
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+ }
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+ return true;
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+} /* end download() */
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+
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