// Once the document object model has finished loading, we 
// are going to hook up all the click handlers for the file
// and directory links.
$(
	function(){
		
		// Make sure that all the links have void actions
		// so that the page doesn't change or jump around.
		$( "a" ).attr(
			"href",
			"javascript:void( 0 );"
			);
			
		
		// Hook up the directory click handler.
		$( "a.dir" ).click(
			function(){
				var jLink = $( this );
				var jSubDir = jLink.next( "ul" );
				
				// Toggle the sub-directory list.
				jSubDir.toggle();
			}				
			);
			
			
		// Hoop up the file click handler.
		$( "a.file" ).click(
			function(){
				var jLink = $( this );
				var jSelected = $( "a.selected" );

				// Remove the selected class.
				jSelected.removeClass( "selected" );
				
				// Set the selected status on new link.
				jLink.addClass( "selected" );		
				
				// Show file name.
				$( "span#filename" ).text( jLink.text() );
				
				// Load file.
				ShowFile( jLink.attr( "id" ) );
			}
			);
			
			
		// The file might start off with some default elements.
		// Show all the selected elements including all of the 
		// parent directories.
		$( "a.selected" ).each(
			function( intI ){
				var jLink = $( this );
				var jParents = jLink.parents( "ul" );
				var jSubDir = jLink.next( "ul" );
				
				// Show the current dir (this will only 
				// work if this is a directory link).
				jSubDir.show();
				
				// Show all the parents to show them.
				jParents.show();
				
				// If this is the first one, then we want to load the file.
				if (intI == 0){
					
					// Show the file name.
					$( "span#filename" ).text( jLink.text() );
					
					// Load the file.
					ShowFile( jLink.attr( "id" ) );
					
				}
			}				
			);
			
	}		
	);


// This will load the given file into the PRE element.
function ShowFile( strPath ){

	// Check to see if there is an AJAX request already in 
	// progress that needs to be stopped.
	if (objHttpFileDataRequest){
		
		// Abort the AJAX request.
		objHttpFileDataRequest.abort();
	
	}

	// Use AJAX to get the text of the file and store the
	// new AJAX request object into the global variable.
	objHttpFileDataRequest = $.get(
		"index.cfm",
		{
			getdata: 1,
			dir: strCodeDir,
			file: encodeURI( strPath )
		},
		function( strFileData ){
			$( "pre#fileoutput" ).text( strFileData );
			
			// Jump back to top.
			window.location.hash = "content";
		}
		);
		
}


// This function forwards the user to the zip file for
// the current code directory.
function GetZip(){
	location.href = ("../code/" + strCodeDir + ".zip");
}


// Store a global value to the HTTP request object that is going
// to be used in our AJAX file data calls. In order to make sure 
// that calls are not jumbled, we want to serialize our requests.
// Meaning, if one request goes out, it should abort any previously
// running request.
var objHttpFileDataRequest = null;