UE.plugin.register('charts', function (){

    var me = this;

    return {
        bindEvents: {
            'chartserror': function () {
            }
        },
        commands:{
            'charts': {
                execCommand: function ( cmd, data ) {

                    var tableNode = domUtils.findParentByTagName(this.selection.getRange().startContainer, 'table', true),
                        flagText = [],
                        config = {};

                    if ( !tableNode ) {
                        return false;
                    }

                    if ( !validData( tableNode ) ) {
                        me.fireEvent( "chartserror" );
                        return false;
                    }

                    config.title = data.title || '';
                    config.subTitle = data.subTitle || '';
                    config.xTitle = data.xTitle || '';
                    config.yTitle = data.yTitle || '';
                    config.suffix = data.suffix || '';
                    config.tip = data.tip || '';
                    //数据对齐方式
                    config.dataFormat = data.tableDataFormat || '';
                    //图表类型
                    config.chartType = data.chartType || 0;

                    for ( var key in config ) {

                        if ( !config.hasOwnProperty( key ) ) {
                            continue;
                        }

                        flagText.push( key+":"+config[ key ] );

                    }

                    tableNode.setAttribute( "data-chart", flagText.join( ";" ) );
                    UE.dom.domUtils.addClass( tableNode, "edui-charts-table" );

                    this.fireEvent( 'contentchange' );

                },
                queryCommandState: function ( cmd, name ) {

                    var tableNode = domUtils.findParentByTagName(this.selection.getRange().startContainer, 'table', true);
                    return tableNode && validData( tableNode ) ? 0 : -1;

                }
            }
        },
        inputRule:function(root){
            utils.each(root.getNodesByTagName('table'),function( tableNode ){

                if ( tableNode.getAttr("data-chart") !== undefined ) {
                    tableNode.setAttr("style");
                }

            })

        },
        outputRule:function(root){
            utils.each(root.getNodesByTagName('table'),function( tableNode ){

                if ( tableNode.getAttr("data-chart") !== undefined ) {
                    tableNode.setAttr("style", "display: none;");
                }

            })

        }
    }

    function validData ( table ) {

        var firstRows = null,
            cellCount = 0;

        //行数不够
        if ( table.rows.length < 2 ) {
            return false;
        }

        //列数不够
        if ( table.rows[0].cells.length < 2 ) {
            return false;
        }

        //第一行所有cell必须是th
        firstRows = table.rows[ 0 ].cells;
        cellCount = firstRows.length;

        for ( var i = 0, cell; cell = firstRows[ i ]; i++ ) {

            if ( cell.tagName.toLowerCase() !== 'th' ) {
                return false;
            }

        }

        for ( var i = 1, row; row = table.rows[ i ]; i++ ) {

            //每行单元格数不匹配， 返回false
            if ( row.cells.length != cellCount ) {
                return false;
            }

            //第一列不是th也返回false
            if ( row.cells[0].tagName.toLowerCase() !== 'th' ) {
                return false;
            }

            for ( var j = 1, cell; cell = row.cells[ j ]; j++ ) {

                var value = utils.trim( ( cell.innerText || cell.textContent ) );

                value = value.replace( new RegExp( UE.dom.domUtils.fillChar, 'g' ), '' ).replace( /^\s+|\s+$/g, '' );

                //必须是数字
                if ( !/^\d*\.?\d+$/.test( value ) ) {
                    return false;
                }

            }

        }

        return true;

    }

});