function openWikiBlockEditor( htmlElement, entityDefinition, blockId, handler )
{
    ping( "/clientUI/openSession.aspx", 
        function( text ) 
        {            
            var host = document.getElementById( "editorHost" );
            host.Initialize( "http://www.lagotek.com/clientUI/cuservice.aspx", text );
            setTimeout( function() {                
                host.ShowEditor( entityDefinition.EditorClass, blockId );
                startPolling( handler );
            }, 10 );
        } 
    );
}

function editWikiBlock( htmlElement, entityDefinition, blockId, callback )
{
    openWikiBlockEditor( htmlElement, entityDefinition, blockId,
        function( modalResult, returnValue ) {
            ping( getEntityTextPath( entityDefinition, blockId ), 
                function( text ) {
                    if ( callback ) callback();
                    htmlElement.innerHTML = text;
                } 
            );
        }
    );
}

function createWikiBlock( htmlElement, entityDefinition, menuFunction, callback )
{
    openWikiBlockEditor( htmlElement, entityDefinition, "",
        function( modalResult, id ) {
            if ( !htmlElement )
            {
                if ( callback ) callback();
                return;
            }
            if ( !id )
            {
                return;
            }
            
            ping( getEntityTextPath( entityDefinition, id ), 
                function( text ) {
                    if ( callback ) callback();
                    var parent = htmlElement.parentElement;
                    var span = document.createElement( "span" );
                    span.onmouseover = function() { menuFunction( span, id ) };
                    span.innerHTML = text;
                    parent.insertBefore( span, htmlElement );
                }
            );
        }
    );
}

function getEntityTextPath( entityDefinition, blockId )
{
    var entityName = entityDefinition.EntityName;
    var controlPath = entityDefinition.ControlPath;
    if ( controlPath != '' )
    {
        controlPath = "&control=" + controlPath;
    }
    if ( entityDefinition.HasSeparator )
    {
        controlPath += "&includeSeparator=1";
    }

    return "/clientUI/getEntityText.aspx?entity=" + entityName + "&id=" + blockId + controlPath;
}

function deleteWikiBlock( htmlElement, entityDefinition, blockId, callback )
{
    ping( '/clientui/deleteEntity.aspx?entity=' + entityDefinition.EntityName + '&id=' + blockId,
        function( text )
        {
            if ( callback ) callback();
            var parent = htmlElement.parentElement;
            parent.removeChild( htmlElement );
        }
    );
}

function startPolling( cb )
{
    var host = document.getElementById( "editorHost" );
    
    setTimeout( function() {
            if ( host.EditorVisible )
            {
                startPolling( cb );
            }
            else
            {
                cb( host.ModalResult, host.ReturnValue );
            }
        }, 500 );
}