ExtJs 实现动态列,动态多表头 在这里添加日志标题

先看看效果

效果不错吧,就是样式稍微差点,没办法Extjs的表头是渐变的,不过样式改起来应该不难.

接下来是数据:

"{columModle:[{header:\"用电单位\",dataIndex:\"用电单位\"},

{header:\"2009-06 _度数\",dataIndex:\"2009-06 _度数\"},

{header:\"2009-06 _单价\",dataIndex:\"2009-06 _单价\"},

 {header:\"2009-06 _金额\",dataIndex:\"2009-06 _金额\"},

 {header:\"2009-07 _度数\",dataIndex:\"2009-07 _度数\"},

 {header:\"2009-07 _单价\",dataIndex:\"2009-07 _单价\"},

 {header:\"2009-07 _金额\",dataIndex:\"2009-07 _金额\"},

{header:\"2009-08 _度数\",dataIndex:\"2009-08 _度数\"},

{header:\"2009-08 _单价\",dataIndex:\"2009-08 _单价\"},

 {header:\"2009-08 _金额\",dataIndex:\"2009-08 _金额\"},

 {header:\"合计_度数\",dataIndex:\"合计_度数\"},

 {header:\"合计_金额\",dataIndex:\"合计_金额\"}],

 fieldsNames:[{name:\"用电单位\"},{name:\"2009-06 _度数\"},{name:\"2009-06 _单价\"},{name:\"2009-06 _金额\"},{name:\"2009-07 _度数\"},

{name:\"2009-07 _单价\"},{name:\"2009-07 _金额\"},{name:\"2009-08 _度数\"},{name:\"2009-08 _单价\"},{name:\"2009-08 _金额\"},

{name:\"合计_度数\"},{name:\"合计_金额\"}],

 data:[{\"用电单位\":\"1\",\"2009-06 _度数\":\"\",\"2009-06 _单价\":\"\",\"2009-06 _金额\":\"\",\"2009-07 _度数\":\"1.00\",\"2009-07 _单价\":\"2.00\",\"2009-07 _金额\":\"2.0000\",\"2009-08 _度数\":\"4.00\",\"2009-08 _单价\":\"2.00\",\"2009-08 _金额\":\"8.0000\",\"合计_度数\":\"5.00\",\"合计_金额\":\"10.0000\"}]}"

主要是红色的部分

然后是js:

  Ext.onReady(function() {
            var conn = new Ext.data.Connection();
            conn.request({ url: 'FuelCompany.ashx', callback: function(options, success, response) {
                var a = response.responseText;
                var json = new Ext.util.JSON.decode(a);
                var jsonrows = "[[";
                var rows = {};
                var _temp = [];
                for (var item in json.columModle) {
                    if (item >= 0) {
                        var tempHeader = json.columModle[item].header
                        if (tempHeader.split('_').length > 1) {
                            _temp.push(tempHeader.split('_')[0]);
                            json.columModle[item].header = tempHeader.split('_')[1];
                        }
                        else
                            _temp.push("");
                    }
                }
                var i = 1;
                for (var item in _temp) {
                    if (item >= 0) {
                        if (_temp[item] != _temp[Number(item) + 1]) {
                            jsonrows += "{header:'" + _temp[item] + "',colspan:" + i.toString() + ",align:'center'},";
                            i = 1;
                        }
                        else
                            i++;
                    }
                }
                jsonrows = jsonrows.substring(0, jsonrows.length - 1);
                jsonrows += "]]";
                var cm = new Ext.grid.ColumnModel({
                    columns: json.columModle,
                    rows: new Ext.util.JSON.decode(jsonrows)
                });
                var ds = new Ext.data.JsonStore({
                    data: json.data,
                    fields: json.fieldsNames
                });
                var header = new Ext.ux.plugins.GroupHeaderGrid();
                var grid = new Ext.grid.EditorGridPanel({
                    height: 400,
                    region: 'center',
                    split: true,
                    border: false,
                    store: ds,
                    plugins: [header],
                    cm: cm,
                    renderTo: 'Div_CompanyProfile'
                });
            }
            });
        });

注意： Ext.ux.plugins.GroupHeaderGrid类源文件如下图所示

GroupHeaderPlugin.js文件源码：

Ext.namespace("Ext.ux.plugins");

Ext.ux.plugins.GroupHeaderGrid = function(config) {

 Ext.apply(this, config);

};

Ext.extend(Ext.ux.plugins.GroupHeaderGrid, Ext.util.Observable, {

 init: function(grid) {

  var v = grid.getView();

  v.beforeMethod('initTemplates', this.initTemplates);

  v.renderHeaders = this.renderHeaders.createDelegate(v, [v.renderHeaders]);

        v.afterMethod('onColumnWidthUpdated', this.updateGroupStyles);

        v.afterMethod('onAllColumnWidthsUpdated', this.updateGroupStyles);

  v.afterMethod('onColumnHiddenUpdated', this.updateGroupStyles);

  v.getHeaderCell = this.getHeaderCell;

  v.updateSortIcon = this.updateSortIcon;

  v.getGroupStyle = this.getGroupStyle;

 },

 initTemplates: function() {

  var ts = this.templates || {};

  if (!ts.gheader) {

   ts.gheader = new Ext.Template(

    '<table border="0" cellspacing="0" cellpadding="0" class="ux-grid-group-table" style="{tstyle}">',

    '<thead>{rows}{header}</thead>',

    '</table>'

   );

  }

  if (!ts.header) {

   ts.header = new Ext.Template(

    '<tr class="x-grid3-hd-row">{cells}</tr>'

   );

  }

  if (!ts.gcell) {

   ts.gcell = new Ext.Template(

    '<td class="x-grid3-hd {cls} x-grid3-td-{id}" style="{style}" rowspan="{rowspan}" colspan="{colspan}">',

    '<div {tooltip} class="x-grid3-hd-inner x-grid3-hd-{id}" unselectable="on" style="{istyle}">{value}</div>',

    '</td>'

   );

  }

  this.templates = ts;

 },

 renderHeaders: function(renderHeaders) {

  var ts = this.templates, rows = [], table = [];

  for (var i = 0; i < this.cm.rows.length; i++) {

   var r = this.cm.rows[i], cells = [], col = 0;

   for (var j = 0; j < r.length; j++) {

    var c = r[j];

    c.colspan = c.colspan || 1;

    c.rowspan = c.rowspan || 1;

    while (table[i] && table[i][col]) {

     col++;

    }

    c.col = col;

    for (var rs = i; rs < i + c.rowspan; rs++) {

     if (!table[rs]) {

      table[rs] = [];

     }

     for (var cs = col; cs < col + c.colspan; cs++) {

      table[rs][cs] = true;

     }

    }

    var gs = this.getGroupStyle(c);

    cells[j] = ts.gcell.apply({

     id: c.id || i + '-' + col,

     cls: c.header ? 'ux-grid-hd-group-cell' : 'ux-grid-hd-nogroup-cell',

     style: 'width:' + gs.width + ';' + (gs.hidden ? 'display:none;' : '') + (c.align ? 'text-align:' + c.align + ';' : ''),

     rowspan: c.rowspan,

     colspan: gs.colspan,

     tooltip: c.tooltip ? (Ext.QuickTips.isEnabled() ? 'ext:qtip' : 'title') + '="' + c.tooltip + '"' : '',

     value: c.header || '&#160;',

     istyle: c.align == 'right' ? 'padding-right:16px' : ''

    });

   }

   rows[i] = ts.header.apply({

    cells: cells.join('')

   });

  }

  return ts.gheader.apply({

   tstyle: 'width:' + this.getTotalWidth() + ';',

   rows: rows.join(''),

   header: renderHeaders.call(this)

  });

 },

 getGroupStyle: function(c) {

  var w = 0, h = true, cs = 0;

  for (var i = c.col; i < c.col + c.colspan; i++) {

   if (!this.cm.isHidden(i)) {

    var cw = this.cm.getColumnWidth(i);

    if(typeof cw == 'number'){

     w += cw;

    }

    h = false;

    cs++;

   }

  }

  return {

   width: (Ext.isBorderBox ? w : Math.max(w - this.borderWidth, 0)) + 'px',

   hidden: h,

   colspan: cs || 1

  }

 },

 updateGroupStyles: function(col) {

  var rows = this.mainHd.query('tr.x-grid3-hd-row');

  for (var i = 0; i < rows.length - 1; i++) {

   var cells = rows[i].childNodes;

   for (var j = 0; j < cells.length; j++) {

    var c = this.cm.rows[i][j];

    if ((typeof col != 'number') || (col >= c.col && col < c.col + c.colspan)) {

     var gs = this.getGroupStyle(c);

     cells[j].style.width = gs.width;

     cells[j].style.display = gs.hidden ? 'none' : '';

     cells[j].colSpan = gs.colspan;

    }

   }

  }

 },

 getHeaderCell : function(index){

  return this.mainHd.query('td.x-grid3-cell')[index];

 },

 updateSortIcon : function(col, dir){

  var sc = this.sortClasses;

  var hds = this.mainHd.select('td.x-grid3-cell').removeClass(sc);

  hds.item(col).addClass(sc[dir == "DESC" ? 1 : 0]);

 }

});

评论

1 楼 wanglantao 2010-11-18  

你好 这个完整版 你有吗 谢谢