/**
 * Convert a single file-input element into a 'multiple' input list
 *
 * Usage:
 *
 *   1. Create a file input element (no name)
 *      eg. <input type="file" id="first_file_element">
 *
 *   2. Create a DIV for the output to be written to
 *      eg. <div id="files_list"></div>
 *
 *   3. Instantiate a MultiSelector object, passing in the DIV and an (optional) maximum number of files
 *      eg. var multi_selector = new MultiSelector( document.getElementById( 'files_list' ), 3 );
 *
 *   4. Add the first element
 *      eg. multi_selector.addElement( document.getElementById( 'first_file_element' ) );
 *
 *   5. That's it.
 *
 *   You might (will) want to play around with the addListRow() method to make the output prettier.
 *
 *   You might also want to change the line 
 *       element.name = 'file_' + this.count;
 *   ...to a naming convention that makes more sense to you.
 * 
 * Licence:
 *   Use this however/wherever you like, just don't blame me if it breaks anything.
 *
 * Credit:
 *   If you're nice, you'll leave this bit:
 *  
 *   Class by Stickman -- http://www.the-stickman.com
 *      with thanks to:
 *      [for Safari fixes]
 *         Luis Torrefranca -- http://www.law.pitt.edu
 *         and
 *         Shawn Parker & John Pennypacker -- http://www.fuzzycoconut.com
 *      [for duplicate name bug]
 *         'neal'
 */
function MultiSelector(list_target, max){

	// Where to write the list
	this.list_target = list_target;
	// How many elements?
	this.count = 0;
	// How many elements?
	this.id = 0;
	// Is there a maximum?
	if( max ){
		this.max = max;
	} else {
		this.max = -1;
	};
	
	/**
	 * Add a new file input element
	 */
	this.addElement = function( element ){

		// Make sure it's a file input element
		if( element.tagName == 'INPUT' && element.type == 'file' ){

			// Element name -- what number am I?
			element.name = 'file_' + this.id++;

			// Add reference to this object
			element.multi_selector = this;

			// What to do when a file is selected
			element.onchange = function(){

				// New file input
				var new_element = document.createElement( 'input' );
				new_element.type = 'file';
				new_element.style.width = '70px';

				// Add new element
				this.parentNode.insertBefore( new_element, this );

				// Apply 'update' to element
				this.multi_selector.addElement( new_element );

				// Update list
				this.multi_selector.addListRow( this );

				// Hide this: we can't use display:none because Safari doesn't like it
				this.style.position = 'absolute';
				this.style.left = '-1000px';

			};
			// If we've reached maximum number, disable input element
			if( this.max != -1 && this.count >= this.max ){
				element.disabled = true;
			};

			// File element counter
			this.count++;
			// Most recent element
			this.current_element = element;
			
		} else {
			// This can only be applied to file input elements!
			alert( 'Error: not a file input element' );
		};

	};



	/**
	 * Add a new row to the list of files
	 */	
	this.addListRow = function( element ){
		
		// add new part for the form for this image :)
		// fun part I by joggink :p
		var filename = element.value.split(/\\/);
		var fname = filename[filename.length - 1]
		var upf = $('uploadformp')
		var edf = $('editinfop')
		var inf  = $('infoformp');
		upf.style.display = 'block';
		edf.style.display = 'block';
		inf.style.display = 'none';
		
		// Show list header and list div
		document.getElementById('files_list').style.display = 'block';
		document.getElementById('files_header').style.display = 'block';
		document.getElementById('uploadsub').style.display = 'block';
		
		// Row div
		var new_row = document.createElement( 'div' );
		new_row.id = 'row_' + fname;
		// edit button
		//var edit = '<input type="button" value="edit" onclick="showInfo(\'' + fname + '\')" />';
		// Delete button
		//var dele = '<input type="button" value="delete" onclick="deleterow(this);" />';
		// References
		new_row.element = element;

		// Add button
		//new_row.innerHTML += edit;
		//new_row.innerHTML += dele;
	
		// Set row value
		new_row.innerHTML += filename[filename.length-1];


		// Add it to the list
		this.list_target.appendChild( new_row );
		
	};

};

function deleterow(element){
	var filename = element.value.split(/\\/);
	var fname = filename[filename.length - 1]	
	var rowdiv = $('row_' + fname);
	if (rowdiv){
		rowdiv.parentNode.removeChild(rowdiv);
	}

}

function toggleForm(){
		var upf = $('uploadformp');
		var edf = $('editinfop');
		var inf  = $('infoformp');
		var nin = $('imginfo');
		
		// do form check first :)
		var frm = [];
		frm[0] = $('project_name');
		frm[1] = $('location');
		frm[2] = $('photographer');
		frm[3] = $('architect');
		var err = false;
		for (var n = 0;n<frm.length;n++){
			if (frm[n].value == frm[n].title || frm[n].value == ''){
				err = true;
			}
		}
		
		if (err == false){
			upf.style.display = 'block';
			edf.style.display = 'block';
			inf.style.display = 'none';
			nin.style.display = 'none';
		}else{
			window.alert('U moet alle velden invullen!');
		}
		
}
function showInfo(){
		var upf = $('uploadformp')
		var inf  = $('infoformp');
		var nin = $('imginfo');
		var edf = $('editinfop')
		
		nin.style.display = 'block';
		inf.style.display = 'block';
		upf.style.display = 'none';
		edf.style.display = 'none';
}