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"use strict";
var mv = function(mv) {
mv.loader = {
/* Callbacks */
onbulkstart: onbulkstart,
onloadstart: onloadstart,
onprogress: onprogress,
onabort: onabort,
onerror: onerror,
/* File state accessors */
numfiles: function() { return numfiles; },
filenames: function() { return filenames; },
curfile: function() { return curfile; },
/* Callback */
setname: function(n) {},
/* Initialise the loader module */
init: init,
}
/* Set up handlers for file selector */
var numfiles = 0;
var filenames = [];
var curfile = 0;
var files;
function onbulkstart(fevt) {}
function onloadstart(evt) {}
function onprogress(evt) {}
function onabort(evt) {
alert('File load aborted!');
}
function onerror(evt) {
switch(evt.target.error.code) {
case evt.target.error.NOT_FOUND_ERR:
alert('File Not Found!');
break;
case evt.target.error.NOT_READABLE_ERR:
alert('File is not readable');
break;
case evt.target.error.ABORT_ERR:
break; // noop
default:
alert('An error occurred reading this file.');
};
}
function init(input, each, after) {
input.on('change', function() {
files = d3.event.target.files;
numfiles = files.length;
filenames = Array.prototype.map.call(files, function(d) { return d.name; });
curfile = 0;
var reader = new FileReader();
mv.loader.onbulkstart();
reader.onerror = function() { mv.loader.onerror.apply(null, arguments) };
reader.onprogress = function(evt) { if (evt.lengthComputable) { mv.loader.onprogress(evt.loaded, evt.total) } };
reader.onabort = function() { mv.loader.onabort.apply(null, arguments) };
reader.onloadstart = function() { mv.loader.onloadstart.apply(null, arguments) };
reader.onload = function(evt) {
each(reader.result, filenames[curfile], function() {
++curfile;
if (curfile == numfiles) {
after();
} else {
nextFile();
}
});
};
function nextFile() {
var file = files[curfile];
mv.loader.onloadstart();
if (file.name.indexOf(".zip", name.length - 4) != -1) {
zip.createReader(new zip.BlobReader(file), function(zipReader) {
zipReader.getEntries(function(entries) {
entries.forEach(function(d, i) {
mv.loader.setname(file.name + "'; unzipping '" + d.filename + " (" + (i + 1) + "/" + entries.length + ")");
d.getData(new zip.BlobWriter(), function(blob) {
mv.loader.setname(d.filename);
reader.readAsBinaryString(blob);
}, mv.loader.onprogress);
});
}, mv.loader.onerror);
}, mv.loader.onerror);
} else {
mv.loader.setname(file);
reader.readAsBinaryString(file);
}
}
nextFile();
}, false);
};
return mv;
}(mv || {});
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