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| | // http://rubyforge.org/pipermail/mongrel-users/2007-July/003747.html
function appendDebug(text) {
li = document.createElement('li');
li.innerHTML = text;
$('debug').appendChild(li);
}
var UploadProgress = {
uploading: null,
begin: function(upload_id) {
//$('upload-console').src = '/files/upload_progress?upload_id=' + upid;
new Ajax.Pull('/progress?long&upload_id=' + upload_id, {
// TODO:
// poll_url is not yet implemented in Ajax.Pull. this is needed for
// older versions of safari due to a bug.
//
//poll_url: '/files/upload_progress?single&upload_id=' + upload_id,
//pullDebugger: appendDebug,
handler: this.update.bind(this)
});
this.uploading = true;
this.StatusBar.create();
},
update: function(json) {
if(json["state"] == 'starting') {
$('results').update('staring upload...');
} else if(json["state"] == 'done') {
this.uploading = false;
this.StatusBar.finish();
$('results').update('finished!');
} else if(json["state"] == 'error') {
this.error(json['message']);
} else if(json["state"] == 'uploading') {
var status = json["received"] / json["size"];
var statusHTML = status.toPercentage();
$('results').update(
statusHTML + "<br /><small>" + json["received"].toHumanSize() +
' of ' + json["size"].toHumanSize() + " uploaded.</small>"
);
this.StatusBar.update(status, statusHTML);
} else {
this.error('Unknown upload progress state received: ' + json['state']);
}
},
error: function(msg) {
if(!this.uploading) return;
this.uploading = false;
if(this.StatusBar.statusText) this.StatusBar.statusText.innerHTML = msg || 'Error Uploading File';
},
StatusBar: {
statusBar: null,
statusText: null,
statusBarWidth: 500,
create: function() {
this.statusBar = this._createStatus('status-bar');
this.statusText = this._createStatus('status-text');
this.statusText.innerHTML = '0%';
this.statusBar.style.width = '0';
},
update: function(status, statusHTML) {
this.statusText.innerHTML = statusHTML;
this.statusBar.style.width = Math.floor(this.statusBarWidth * status);
},
finish: function() {
this.statusText.innerHTML = '100%';
this.statusBar.style.width = '100%';
},
_createStatus: function(id) {
el = $(id);
if(!el) {
el = document.createElement('span');
el.setAttribute('id', id);
$('progress-bar').appendChild(el);
}
return el;
}
},
FileField: {
add: function() {
new Insertion.Bottom('file-fields', '<p style="display:none"><input id="data" name="data" type="file" /> <a href="#" onclick="UploadProgress.FileField.remove(this);return false;">x</a></p>')
$$('#file-fields p').last().visualEffect('blind_down', {duration:0.3});
},
remove: function(anchor) {
anchor.parentNode.visualEffect('drop_out', {duration:0.25});
}
}
}
Number.prototype.bytes = function() { return this; };
Number.prototype.kilobytes = function() { return this * 1024; };
Number.prototype.megabytes = function() { return this * (1024).kilobytes(); };
Number.prototype.gigabytes = function() { return this * (1024).megabytes(); };
Number.prototype.terabytes = function() { return this * (1024).gigabytes(); };
Number.prototype.petabytes = function() { return this * (1024).terabytes(); };
Number.prototype.exabytes = function() { return this * (1024).petabytes(); };
['byte', 'kilobyte', 'megabyte', 'gigabyte', 'terabyte', 'petabyte', 'exabyte'].each(function(meth) {
Number.prototype[meth] = Number.prototype[meth+'s'];
});
Number.prototype.toPrecision = function() {
var precision = arguments[0] || 2;
var s = Math.round(this * Math.pow(10, precision)).toString();
var pos = s.length - precision;
var last = s.substr(pos, precision);
return s.substr(0, pos) + (last.match("^0{" + precision + "}$") ? '' : '.' + last);
}
// (1/10).toPercentage()
// # => '10%'
Number.prototype.toPercentage = function() {
return (this * 100).toPrecision() + '%';
}
Number.prototype.toHumanSize = function() {
if(this < (1).kilobyte()) return this + " Bytes";
if(this < (1).megabyte()) return (this / (1).kilobyte()).toPrecision() + ' KB';
if(this < (1).gigabytes()) return (this / (1).megabyte()).toPrecision() + ' MB';
if(this < (1).terabytes()) return (this / (1).gigabytes()).toPrecision() + ' GB';
if(this < (1).petabytes()) return (this / (1).terabytes()).toPrecision() + ' TB';
if(this < (1).exabytes()) return (this / (1).petabytes()).toPrecision() + ' PB';
return (this / (1).exabytes()).toPrecision() + ' EB';
}
|