// JavaScript Document
<!--
Date.ONE_SECOND = 1000
Date.ONE_MINUTE = Date.ONE_SECOND * 60
Date.ONE_HOUR = Date.ONE_MINUTE * 60
Date.ONE_DAY = Date.ONE_HOUR * 24

function nap (m) {var then = new Date(new Date().getTime() + m); while (new Date() < then) {}}
// -->

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++;
			
			//Set element style:width
			element.style.width = "460px";
			
			// Add reference to this object
			element.multi_selector = this;

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

				// New file input
				if(imgLoad(this)){
					
					
					var new_element = document.createElement( 'input' );
					new_element.type = 'file';
	
					// 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';
					
				}
				else{
					//alert(this.value);
				}
			};
			
			// 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 ){

		// Row div
		var new_row = document.createElement( 'div' );
		new_row.className = "Div_Fotos";
		// Delete button
		var new_row_button = document.createElement( 'input' );
		new_row_button.type = 'button';
		new_row_button.className = 'RemoveButton';
		new_row_button.value = 'Remover';

		// References
		new_row.element = element;

		// Delete function
		new_row_button.onclick= function(){

			// Remove element from form
			this.parentNode.element.parentNode.removeChild( this.parentNode.element );

			// Remove this row from the list
			this.parentNode.parentNode.removeChild( this.parentNode );

			// Decrement counter
			this.parentNode.element.multi_selector.count--;

			// Re-enable input element (if it's disabled)
			this.parentNode.element.multi_selector.current_element.disabled = false;

			// Appease Safari
			//    without it Safari wants to reload the browser window
			//    which nixes your already queued uploads
			return false;
		};

		// Set row value
		// utiliza a classe File.Basename();
		var file = new File.Basename(element.value);
		//var file_size = Math.ceil( document.getElementById('Sample').fileSize / 1024 );
		new_row.innerHTML = file.basename() + ' ';

		// Add button
		new_row.appendChild( new_row_button );

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

};

function imgLoad(el) {
	
	var strT = new String();
	strT = el.value;

	ext = el.value.substr(el.value.length - 4);

	if((ext != ".jpg") && (ext != "jpeg")){
		alert("Somente são aceitas imagens no formato JPG.");
		return false;
		
	}

	//document.getElementById("ShowImg").innerHTML= "";
	
	if(strT != "")	{
		
		ImageTag = "<img id='Sample' src='" + strT + "' width='100' height='100' style=\"display:block;\">";
		document.getElementById("ShowImg").innerHTML = ImageTag;
		
		if(!LimitedSize(el)) {
			alert("Tamanho do arquivo maior que 500 KB");
			//document.getElementById("ShowImg").innerHTML= "";
			return false;
		}
		else{
			return true;
		}
	}
	return false;
}

function LimitedSize(el){
	var i;
	var y = document.images;
	nap(500 * (Date.ONE_SECOND / 1000));
	for (i=0; i<y.length; i++) {
		if((y[i].id) == 'Sample') {
			if(y[i].fileSize > 512000)
				return false;
			}
	}
	return true;
}