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ext 复杂报表

EXTCC++C#J# 
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extjs groupheaderplugin的使用
创建调用的HTML：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http: //www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http: //www.w3.org/1999/xhtml" xml: lang="en" lang="en">
<head>
<link rel="stylesheet" type="text/css" href="../extjs/resources/css/ext-all.css" />
<link rel="stylesheet" type="text/css" href="GroupHeaderPlugin.css" />
<script type="text/javascript" src="../extjs/adapter/ext/ext-base.js"></script>
<script type="text/javascript" src="../extjs/ext-all.js"></script>
<script type="text/javascript" src="GroupHeaderPlugin.js"></script>
<script type="text/javascript">
Ext.BLANK_IMAGE_URL = '../extjs/resources/images/default/s.gif';
Ext.onReady(function() {
new Ext.Viewport({
  layout: 'fit',
  items: [{
   xtype: 'grid',
   title: 'GroupHeaderPlugin Example',
   store: new Ext.data.SimpleStore({
    fields: ['id', 'nr1', 'text1', 'info1', 'special1', 'nr2', 'text2', 'info2', 'special2', 'special3', 'changed'],
    data: [
     ['1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11']
    ]
   }),
   colModel: new Ext.grid.ColumnModel({
    columns: [
     {header: 'Id', width: 25, dataIndex: 'id'},
     {header: 'Nr', width: 25, dataIndex: 'nr1'},
     {header: 'Text', width: 50, dataIndex: 'text1'},
     {header: 'Info', width: 50, dataIndex: 'info1'},
     {header: 'Special', width: 60, dataIndex: 'special1'},
     {header: 'Nr', width: 25, dataIndex: 'nr2'},
     {header: 'Text', width: 50, dataIndex: 'text2'},
     {header: 'Info', width: 50, dataIndex: 'info2'},
     {header: 'Special', width: 60, dataIndex: 'special2'},
     {header: 'Special', width: 60, dataIndex: 'special3'},
     {header: 'Changed', width: 50, dataIndex: 'changed'}
    ],
    defaultSortable: true,
    rows: [
     [
      {rowspan: 2},
      {header: 'Before', colspan: 4, align: 'center'},
      {header: 'After', colspan: 4, align: 'center'},
      {header: 'Sum', colspan: 2, align: 'center', rowspan: 2}
     ], [
      {},
      {header: 'Merchandise', colspan: 3, align: 'center'},
      {},
      {header: 'Merchandise', colspan: 3, align: 'center'}
     ]
    ]
   }),
   enableColumnMove: false,
   viewConfig: {
    forceFit: true
   },
   plugins: [new Ext.ux.plugins.GroupHeaderGrid()]
  }]
});
});
</script>
</head>
<body>
</body>
</html>



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]);
}
});



css源码：

.x-grid3-header-offset {
width: auto;
}
.ext-ie .x-grid3 table.ux-grid-group-table, .ext-safari .x-grid3 table.ux-grid-group-table {
table-layout: auto;
}
.ux-grid-hd-group-cell {
background: url(../extjs/resources/images/default/grid/grid3-hrow.gif) repeat-x bottom;
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