/**
 * 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 = 'uploadimage[' + (this.count) + ']';

			// 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.size = '85';
				
				// Row div and space
				var new_row = document.createElement( 'div' );
				var new_space = document.createTextNode( ' '+(this.multi_selector.count)+' ' );
				
				// Set row value
				//new_space.innerHTML = '&nbsp;&nbsp;';
				
				// Add new row before this field and new element before that
				this.parentNode.insertBefore( new_row, this );
				this.parentNode.insertBefore( new_element, this );
				
				// Remove this from the parent and put it into new row (after a space
				this.parentNode.removeChild( this );
				new_row.appendChild(this);
				new_row.appendChild(new_space);
						
				// 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';
				
				//grow popup
				new_element.parentNode.style.height =  ((this.multi_selector.count-1)*2+10) + "em";
				
				//at last: disable onchange func of this archived Element
				this.onchange = function() {return true;};

			};
			// 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 ){

		// Delete button
		var new_row_button = document.createElement( 'input' );
		new_row_button.type = 'button';
		new_row_button.value = 'Entfernen';

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

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

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

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

		// Add button
		//new_row.appendChild( new_row_button );
		element.parentNode.insertBefore( new_row_button, element.nextSibling.nextSibling);

	};

};

/**
	COMMENTS
*/
addComment = {
	moveForm : function(commId, parentId, respondId, postId) {
		var t = this, div, comm = t.I(commId), respond = t.I(respondId), cancel = t.I('cancel-comment-reply-link'), parent = t.I('comment_parent'), post = t.I('comment_post_ID');

		if ( ! comm || ! respond || ! cancel || ! parent )
			return false;

		t.respondId = respondId;
		postId = postId || false;

		if ( ! t.I('wp-temp-form-div') ) {
			div = document.createElement('div');
			div.id = 'wp-temp-form-div';
			div.style.display = 'none';
			respond.parentNode.insertBefore(div, respond);
		}

		comm.parentNode.insertBefore(respond, comm.nextSibling);
		if ( post && postId )
			post.value = postId;
		parent.value = parentId;
		cancel.style.display = '';

		cancel.onclick = function() {
			var t = addComment, temp = t.I('wp-temp-form-div'), respond = t.I(t.respondId);

			if ( ! temp || ! respond )
				return;

			t.I('comment_parent').value = '0';
			temp.parentNode.insertBefore(respond, temp);
			temp.parentNode.removeChild(temp);
			this.style.display = 'none';
			this.onclick = null;
			return false;
		}

		try { t.I('comment').focus(); }
		catch(e) {}
		return false;
	},

	I : function(e) {
		return document.getElementById(e);
	}
}