function CUEditor_Type()
{
    this.CurrentEditor = null;
    
    this.Open = function( url )
    {
        this.Close();
        
        var a = document.createElement( 'iframe' );
        this.CurrentEditor = a;

        var sz = getWindowSize();
        var scr = getScrollXY();

        a.setAttribute('class', 'cui_editor');
        a.setAttribute('className', 'cui_editor');
        a.style.left = ( sz[0] * 0.2 + scr[0] ) + "px";
        a.style.top = ( sz[1] * 0.2 + scr[1] ) + "px";
        a.style.width = ( sz[0] * 0.6 ) + "px";
        a.style.height = ( sz[1] * 0.6 ) + "px";
                
        var overlay = document.createElement( 'div' );
        overlay.setAttribute( 'class', 'cui_overlay' );
        overlay.setAttribute( 'className', 'cui_overlay' );
        a.Overlay = overlay;
        
        var splash = document.createElement( 'div' );
        splash.style.left = a.style.left; splash.style.top = a.style.top;
        splash.style.width = a.style.width; splash.style.height = a.style.height;
        splash.setAttribute( 'class', 'cui_splash' );
        splash.setAttribute( 'className', 'cui_splash' );
        splash.innerHTML = "<br><br><br><br><font size=+3><br><br><br><br><b>Loading...</b></font>";
        a.Splash = splash;
        
        document.body.appendChild( splash );
        document.body.appendChild( overlay );
        document.body.appendChild( a );

        a.src = url;        
        return a;
    };
    
    this.OnEditorLoaded = function()
    {
        document.body.removeChild( CUEditor.CurrentEditor.Splash ); 
        CUEditor.CurrentEditor.Splash = null;
    };
    
    this.Close = function( successfull )
    {
        var a = this.CurrentEditor;
        this.CurrentEditor = null;
        if ( !a ) return;
        
        a.style.display = 'none';
        if ( a.Overlay ) document.body.removeChild( a.Overlay );
        if ( a.Splash ) document.body.removeChild( a.Splash );
        if ( a.OnClosed ) a.OnClosed( successfull );

        setTimeout( 3000, function() { document.body.removeChild( a ); } );        
    };
}

var CUEditor = new CUEditor_Type();

function openWikiBlockEditor( htmlElement, entityDefinition, blockId, handler )
{
    var ed = CUEditor.Open( "/clientui/showEditor.aspx?id=" + blockId + "&entity=" + entityDefinition.EntityName + "&control=" + entityDefinition.ControlPath );
    ed.OnClosed = handler;
}

function editWikiBlock( htmlElement, entityDefinition, blockId, callback )
{
    openWikiBlockEditor( htmlElement, entityDefinition, blockId,
        function( successfull ) {
            ping( getEntityTextPath( entityDefinition, blockId ), 
                ( !htmlElement && !callback ) ? null : function( text ) {
                    if ( callback ) callback( successfull );
                    if ( htmlElement ) 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 );
        }
    );
}