source: trunk/phpgwapi/js/tools/xlink.js @ 2802

( function( )
{
        var _connector = new XConnector;
        var _script = new XScript;
        var _location = window.location;

        function Link( )
        {
                var _path = ( arguments.length && arguments[ 0 ].constructor == String ) ? arguments[ 0 ] : '/';

                var _last_request = null;
                var _before = null;
                var _after = null;

                if ( _location.protocol + '//' + _location.host + _location.pathname != _path )
                        window.location.href = _path + (
                                ( _location.hash ) ?
                                        _location.hash : '#' + String( _location.protocol + '//' + _location.host + _location.pathname + _location.search ).substr( _path.length )
                        );

                function _click( _action, _cache )
                {
                        if ( _action.indexOf( _location.host ) < 0 )
                                _action = _location.protocol + '//' + _location.host + _action;

                        var _post = ( arguments.length == 3 && arguments[ 2 ] && arguments[ 2 ].constructor == String ) ? arguments[ 2 ] : null;

                        if ( _post == null && _action == _last_request )
                                return false;

                        if ( _before )
                                _before( );

                        _connector.go(
                        {
                                'access' : _action,
                                'cache' : _cache,
                                'handler' : _manipulator,
                                'post' : _post
                        } );

                        _last_request = _action;

                        window.location = '#' + (
                                ( _action.indexOf( _path ) < 0 ) ?
                                        _action : _action.substr( _action.indexOf( _path ) + _path.length )
                        );
                }

                function _intercept( pLink )
                {
                        var action = pLink.href;
                        if ( action == '' )
                                return false;

                        var a = ( action.indexOf( 'javascript:' ) === 0 );
                        a = ( a || ( action.indexOf( '#' ) === 0 ) );
                        a = ( a || ( action.indexOf( window.location + '#' ) === 0 ) );
                        a = ( a || ! ( action.indexOf( 'workflow' ) < 0 ) );

                        if ( ! a )
                                pLink.onclick = function( )
                                {
                                        var _cacheit = false;//( ( pLink.hasAttribute( 'cacheit' ) && pLink.getAttribute( 'cacheit' ) === 'true' ) ? true : false );

                                        _click( action, _cacheit );

                                        return false;
                                };
                }

                function _manipulator( _data )
                {
                        if ( ! ( _data.constructor == String ) )
                                return false;

                        var _line_feed = '__LINE_FEED_CHARACTER_' + ( Date.parse( new Date ) ) + '__';

                        _data = _data.trim( ).replace( /[\r\t]/g, '' ).replace( /\n/g, _line_feed );

                        _line_feed = new RegExp( _line_feed, 'g' );

                        var _js = _data.match( new RegExp( '<script[^>]*>.*?<\/script>', 'gi' ) );

                        if ( _js )
                        {
                                var _tag = /<script([^>]+src=["'](\S+)["'])?[^>]*>(.*?)<\/script>/i;

                                for ( var i = 0; i < _js.length; i++ )
                                {
                                        _data = _data.replace( _js[ i ], '' );

                                        _js[ i ] = _tag.exec( _js[ i ] );

                                        var _external = _js[ i ][ 2 ];

                                        if ( _external == undefined || _external.length == 0 )
                                                _script.inline( _js[ i ][ 3 ].replace( _line_feed, '\n' ) );
                                        else
                                        {
                                                if ( _external.indexOf( window.location.host ) < 0 )
                                                        _external = window.location.protocol + '//' + window.location.host + _external;

                                                _script.external(
                                                        _external.substr(
                                                                _path.length - 1,
                                                                _external.length - _path.length + 1 - (
                                                                        ( _external.indexOf( '?' ) < 0 ) ?
                                                                                0 : ( _external.length - _external.indexOf( '?' ) )
                                                                )
                                                        )
                                                );
                                        }
                                }
                        }

                        var el = document.createElement( 'div' );
                        el.innerHTML = _data.replace( _line_feed, '' );

                        var _links = el.getElementsByTagName( 'a' );
                        for ( var i = 0; i < _links.length; i++ )
                                _intercept( _links.item( i ) );

                        if ( _after )
                                _after( el );

                        _script.load( );
                }

                function _handler( )
                {
                        if ( arguments.length != 1 )
                                return false;

                        switch ( arguments[ 0 ].constructor )
                        {
                                case Function :
                                        _after = arguments[ 0 ];
                                        break;
                                case Object :
                                        if ( ! ( ( arguments[ 0 ].before && arguments[ 0 ].before.constructor == Function ) && ( arguments[ 0 ].after && arguments[ 0 ].after.constructor == Function ) ) )
                                                return false;

                                        _before = arguments[ 0 ].before;
                                        _after = arguments[ 0 ].after;
                                        break;
                                default : return false;
                        }
                }

                this.click = function( )
                {
                        _click( arguments[ 0 ],
                                (
                                        ( arguments.length > 1 && arguments[ 1 ] && arguments[ 1 ].constructor == Boolean ) ?
                                                arguments[ 1 ] : false
                                ),
                                (
                                        ( arguments.length > 2 && arguments[ 2 ] && arguments[ 2 ].constructor == String ) ?
                                                arguments[ 2 ] : null
                                )
                        );
                };

                this.intercept = _intercept;
                this.handler = _handler;
                this.manipulator = _manipulator;
        }

        window.XLink = Link;
} )( );