📄 jquery.multifile.js
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/*
### jQuery Multiple File Upload Plugin v1.44 - 2009-04-08 ###
* Home: http://www.fyneworks.com/jquery/multiple-file-upload/
* Code: http://code.google.com/p/jquery-multifile-plugin/
*
* Dual licensed under the MIT and GPL licenses:
* http://www.opensource.org/licenses/mit-license.php
* http://www.gnu.org/licenses/gpl.html
###
*/
/*# AVOID COLLISIONS #*/
;if(window.jQuery) (function($){
/*# AVOID COLLISIONS #*/
// plugin initialization
$.fn.MultiFile = function(options){
if(this.length==0) return this; // quick fail
// Handle API methods
if(typeof arguments[0]=='string'){
// Perform API methods on individual elements
if(this.length>1){
var args = arguments;
return this.each(function(){
$.fn.MultiFile.apply($(this), args);
});
};
// Invoke API method handler
$.fn.MultiFile[arguments[0]].apply(this, $.makeArray(arguments).slice(1) || []);
// Quick exit...
return this;
};
// Initialize options for this call
var options = $.extend(
{}/* new object */,
$.fn.MultiFile.options/* default options */,
options || {} /* just-in-time options */
);
// Empty Element Fix!!!
// this code will automatically intercept native form submissions
// and disable empty file elements
$('form')
.not('MultiFile-intercepted')
.addClass('MultiFile-intercepted')
.submit($.fn.MultiFile.disableEmpty);
//### http://plugins.jquery.com/node/1363
// utility method to integrate this plugin with others...
if($.fn.MultiFile.options.autoIntercept){
$.fn.MultiFile.intercept( $.fn.MultiFile.options.autoIntercept /* array of methods to intercept */ );
$.fn.MultiFile.options.autoIntercept = null; /* only run this once */
};
// loop through each matched element
this
.not('.MultiFile-applied')
.addClass('MultiFile-applied')
.each(function(){
//#####################################################################
// MAIN PLUGIN FUNCTIONALITY - START
//#####################################################################
// BUG 1251 FIX: http://plugins.jquery.com/project/comments/add/1251
// variable group_count would repeat itself on multiple calls to the plugin.
// this would cause a conflict with multiple elements
// changes scope of variable to global so id will be unique over n calls
window.MultiFile = (window.MultiFile || 0) + 1;
var group_count = window.MultiFile;
// Copy parent attributes - Thanks to Jonas Wagner
// we will use this one to create new input elements
var MultiFile = {e:this, E:$(this), clone:$(this).clone()};
//===
//# USE CONFIGURATION
if(typeof options=='number') options = {max:options};
var o = $.extend({},
$.fn.MultiFile.options,
options || {},
($.metadata? MultiFile.E.metadata(): ($.meta?MultiFile.E.data():null)) || {}, /* metadata options */
{} /* internals */
);
// limit number of files that can be selected?
if(!(o.max>0) /*IsNull(MultiFile.max)*/){
o.max = MultiFile.E.attr('maxlength');
if(!(o.max>0) /*IsNull(MultiFile.max)*/){
o.max = (String(MultiFile.e.className.match(/\b(max|limit)\-([0-9]+)\b/gi) || ['']).match(/[0-9]+/gi) || [''])[0];
if(!(o.max>0)) o.max = -1;
else o.max = String(o.max).match(/[0-9]+/gi)[0];
}
};
o.max = new Number(o.max);
// limit extensions?
o.accept = o.accept || MultiFile.E.attr('accept') || '';
if(!o.accept){
o.accept = (MultiFile.e.className.match(/\b(accept\-[\w\|]+)\b/gi)) || '';
o.accept = new String(o.accept).replace(/^(accept|ext)\-/i,'');
};
//===
// APPLY CONFIGURATION
$.extend(MultiFile, o || {});
MultiFile.STRING = $.extend({},$.fn.MultiFile.options.STRING,MultiFile.STRING);
//===
//#########################################
// PRIVATE PROPERTIES/METHODS
$.extend(MultiFile, {
n: 0, // How many elements are currently selected?
slaves: [], files: [],
instanceKey: MultiFile.e.id || 'MultiFile'+String(group_count), // Instance Key?
generateID: function(z){ return MultiFile.instanceKey + (z>0 ?'_F'+String(z):''); },
trigger: function(event, element){
var handler = MultiFile[event], value = $(element).attr('value');
if(handler){
var returnValue = handler(element, value, MultiFile);
if( returnValue!=null ) return returnValue;
}
return true;
}
});
//===
// Setup dynamic regular expression for extension validation
// - thanks to John-Paul Bader: http://smyck.de/2006/08/11/javascript-dynamic-regular-expresions/
if(String(MultiFile.accept).length>1){
MultiFile.accept = MultiFile.accept.replace(/\W+/g,'|').replace(/^\W|\W$/g,'');
MultiFile.rxAccept = new RegExp('\\.('+(MultiFile.accept?MultiFile.accept:'')+')$','gi');
};
//===
// Create wrapper to hold our file list
MultiFile.wrapID = MultiFile.instanceKey+'_wrap'; // Wrapper ID?
MultiFile.E.wrap('<div class="MultiFile-wrap" id="'+MultiFile.wrapID+'"></div>');
MultiFile.wrapper = $('#'+MultiFile.wrapID+'');
//===
// MultiFile MUST have a name - default: file1[], file2[], file3[]
MultiFile.e.name = MultiFile.e.name || 'file'+ group_count +'[]';
//===
if(!MultiFile.list){
// Create a wrapper for the list
// * OPERA BUG: NO_MODIFICATION_ALLOWED_ERR ('list' is a read-only property)
// this change allows us to keep the files in the order they were selected
MultiFile.wrapper.append( '<div class="MultiFile-list" id="'+MultiFile.wrapID+'_list"></div>' );
MultiFile.list = $('#'+MultiFile.wrapID+'_list');
};
MultiFile.list = $(MultiFile.list);
//===
// Bind a new element
MultiFile.addSlave = function( slave, slave_count ){
//if(window.console) console.log('MultiFile.addSlave',slave_count);
// Keep track of how many elements have been displayed
MultiFile.n++;
// Add reference to master element
slave.MultiFile = MultiFile;
// BUG FIX: http://plugins.jquery.com/node/1495
// Clear identifying properties from clones
if(slave_count>0) slave.id = slave.name = '';
// Define element's ID and name (upload components need this!)
//slave.id = slave.id || MultiFile.generateID(slave_count);
if(slave_count>0) slave.id = MultiFile.generateID(slave_count);
//FIX for: http://code.google.com/p/jquery-multifile-plugin/issues/detail?id=23
// 2008-Apr-29: New customizable naming convention (see url below)
// http://groups.google.com/group/jquery-dev/browse_frm/thread/765c73e41b34f924#
slave.name = String(MultiFile.namePattern
/*master name*/.replace(/\$name/gi,$(MultiFile.clone).attr('name'))
/*master id */.replace(/\$id/gi, $(MultiFile.clone).attr('id'))
/*group count*/.replace(/\$g/gi, group_count)//(group_count>0?group_count:''))
/*slave count*/.replace(/\$i/gi, slave_count)//(slave_count>0?slave_count:''))
);
// If we've reached maximum number, disable input slave
if( (MultiFile.max > 0) && ((MultiFile.n-1) > (MultiFile.max)) )//{ // MultiFile.n Starts at 1, so subtract 1 to find true count
slave.disabled = true;
//};
// Remember most recent slave
MultiFile.current = MultiFile.slaves[slave_count] = slave;
// We'll use jQuery from now on
slave = $(slave);
// Clear value
slave.val('').attr('value','')[0].value = '';
// Stop plugin initializing on slaves
slave.addClass('MultiFile-applied');
// Triggered when a file is selected
slave.change(function(){
//if(window.console) console.log('MultiFile.slave.change',slave_count);
// Lose focus to stop IE7 firing onchange again
$(this).blur();
//# Trigger Event! onFileSelect
if(!MultiFile.trigger('onFileSelect', this, MultiFile)) return false;
//# End Event!
//# Retrive value of selected file from element
var ERROR = '', v = String(this.value || ''/*.attr('value)*/);
// check extension
if(MultiFile.accept && v && !v.match(MultiFile.rxAccept))//{
ERROR = MultiFile.STRING.denied.replace('$ext', String(v.match(/\.\w{1,4}$/gi)));
//}
//};
// Disallow duplicates
for(var f in MultiFile.slaves)//{
if(MultiFile.slaves[f] && MultiFile.slaves[f]!=this)//{
//console.log(MultiFile.slaves[f],MultiFile.slaves[f].value);
if(MultiFile.slaves[f].value==v)//{
ERROR = MultiFile.STRING.duplicate.replace('$file', v.match(/[^\/\\]+$/gi));
//};
//};
//};
// Create a new file input element
var newEle = $(MultiFile.clone).clone();// Copy parent attributes - Thanks to Jonas Wagner
//# Let's remember which input we've generated so
// we can disable the empty ones before submission
// See: http://plugins.jquery.com/node/1495
newEle.addClass('MultiFile');
// Handle error
if(ERROR!=''){
// Handle error
MultiFile.error(ERROR);
// 2007-06-24: BUG FIX - Thanks to Adrian Wr骲el <adrian [dot] wrobel [at] gmail.com>
// Ditch the trouble maker and add a fresh new element
MultiFile.n--;
MultiFile.addSlave(newEle[0], slave_count);
slave.parent().prepend(newEle);
slave.remove();
return false;
};
// Hide this element (NB: display:none is evil!)
$(this).css({ position:'absolute', top: '-3000px' });
// Add new element to the form
slave.after(newEle);
// Update list
MultiFile.addToList( this, slave_count );
// Bind functionality
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