[转]收藏的Extjs 多表头插件GroupHeaderGrid

本文转载自chy2z《收藏的Extjs 多表头插件GroupHeaderGrid》

效果图：

是不是非常酷啊！

---

js 代码：

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

Ext.tet.plugins.GroupHeaderGrid = function(config) {
 Ext.apply(this, config);
};

Ext.extend(Ext.tet.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 || ' ',
     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 代码：

.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(../../../client/ext/resources/images/default/grid/grid3-hrow.gif) repeat-x bottom;
}

---

调用方式：（主要是 ColumnModel 的 rows 属性不同）

var cm = new Ext.grid.ColumnModel({ 
                 columns:[
                  new Ext.grid.CheckboxSelectionModel({handleMouseDown:Ext.emptyFn}),
                 {
                  header:"序号",
                  dataIndex:"ID",
                        sortable:true
                 },{
                  header:"借书单号",
                  dataIndex:"BorrowNo",
                        searchable:true,
                        attribute:{type:"string",dateFormat:""},       
                        sortable:true
                 },{
                  header:"借书人",
                  tooltip:"借书人",
                  dataIndex:"LoginName",
                        searchable:true,
                        attribute:{type:"string",dateFormat:""},   
                        sortable:true
                 },{
                  header:"身份证",
                  dataIndex:"IdentityCard",
                     searchable:false,
                     attribute:{type:"string",dateFormat:""},   
                        sortable:true
                 },{
                  header:"图书代码",
                  dataIndex:"BCode",
                  attribute:{type:"string",dateFormat:""},  
                        sortable:true
                 },{
                  header:"图书名称",
                  tooltip:"图书名称",
                  dataIndex:"BName",
                        sortable:true
                 },{
                  header:"借书时间",
                  dataIndex:"BorrowDate",
                  searchable:true,
                  attribute:{type:"date",dateFormat:'Y-m-d'}, 
                  renderer: Ext.util.Format.dateRenderer('Y-m-d'), 
                        sortable:true
                 },{
                  header:"借书数量",
                  dataIndex:"BookNum",
                  searchable:true,
                  attribute:{type:"int"},   
                        sortable:true
                 },{
                  header:"费用",
                  dataIndex:"Charge",
                  searchable:true,
                  attribute:{type:"float"},   
                        sortable:true
                 }],
                 defaultSortable: true,
        rows: [
             [
              {rowspan: 2},
              {rowspan: 2},
              {header: 'Before', colspan: 3, align: 'center'},
              {header: 'After', colspan: 2, align: 'center'},
              {header: 'Sum', colspan: 3, align: 'center'}
             ],[
                 {},{},{},{},{},{},{},{} /*******后8列**********/
             ]
        ]
});

var cm = new Ext.grid.ColumnModel({ 
                 columns:[
                  new Ext.grid.CheckboxSelectionModel({handleMouseDown:Ext.emptyFn}),
                 {
                  header:"序号",
                  dataIndex:"ID",
                        sortable:true
                 },{
                  header:"借书单号",
                  dataIndex:"BorrowNo",
                        searchable:true,
                        attribute:{type:"string",dateFormat:""},       
                        sortable:true
                 },{
                  header:"借书人",
                  tooltip:"借书人",
                  dataIndex:"LoginName",
                        searchable:true,
                        attribute:{type:"string",dateFormat:""},   
                        sortable:true
                 },{
                  header:"身份证",
                  dataIndex:"IdentityCard",
                     searchable:false,
                     attribute:{type:"string",dateFormat:""},   
                        sortable:true
                 },{
                  header:"图书代码",
                  dataIndex:"BCode",
                  attribute:{type:"string",dateFormat:""},  
                        sortable:true
                 },{
                  header:"图书名称",
                  tooltip:"图书名称",
                  dataIndex:"BName",
                        sortable:true
                 },{
                  header:"借书时间",
                  dataIndex:"BorrowDate",
                  searchable:true,
                  attribute:{type:"date",dateFormat:'Y-m-d'}, 
                  renderer: Ext.util.Format.dateRenderer('Y-m-d'), 
                        sortable:true
                 },{
                  header:"借书数量",
                  dataIndex:"BookNum",
                  searchable:true,
                  attribute:{type:"int"},   
                        sortable:true
                 },{
                  header:"费用",
                  dataIndex:"Charge",
                  searchable:true,
                  attribute:{type:"float"},   
                        sortable:true
                 }],
                 defaultSortable: true,
        rows: [
             [
              {rowspan: 1},
              {rowspan: 1},
              {header: 'Before', colspan: 3, align: 'center',rowspan: 2},
              {header: 'After', colspan: 2, align: 'center',rowspan: 2},
              {header: 'Sum', colspan: 3, align: 'center',rowspan: 2}
             ],[
                 {},{}  /*******前两列********/
             ]                  
             
        ]
});

var cm = new Ext.grid.ColumnModel({ 
                 columns:[
                  new Ext.grid.CheckboxSelectionModel({handleMouseDown:Ext.emptyFn}),
                 {
                  header:"序号",
                  dataIndex:"ID",
                        sortable:true
                 },{
                  header:"借书单号",
                  dataIndex:"BorrowNo",
                        searchable:true,
                        attribute:{type:"string",dateFormat:""},       
                        sortable:true
                 },{
                  header:"借书人",
                  tooltip:"借书人",
                  dataIndex:"LoginName",
                        searchable:true,
                        attribute:{type:"string",dateFormat:""},   
                        sortable:true
                 },{
                  header:"身份证",
                  dataIndex:"IdentityCard",
                     searchable:false,
                     attribute:{type:"string",dateFormat:""},   
                        sortable:true
                 },{
                  header:"图书代码",
                  dataIndex:"BCode",
                  attribute:{type:"string",dateFormat:""},  
                        sortable:true
                 },{
                  header:"图书名称",
                  tooltip:"图书名称",
                  dataIndex:"BName",
                        sortable:true
                 },{
                  header:"借书时间",
                  dataIndex:"BorrowDate",
                  searchable:true,
                  attribute:{type:"date",dateFormat:'Y-m-d'}, 
                  renderer: Ext.util.Format.dateRenderer('Y-m-d'), 
                        sortable:true
                 },{
                  header:"借书数量",
                  dataIndex:"BookNum",
                  searchable:true,
                  attribute:{type:"int"},   
                        sortable:true
                 },{
                  header:"费用",
                  dataIndex:"Charge",
                  searchable:true,
                  attribute:{type:"float"},   
                        sortable:true
                 }],
                 defaultSortable: true,
        rows: [
             [
              {rowspan: 2},
              {rowspan: 2},
              {header: 'Before', colspan: 3, align: 'center'},
              {header: 'After', colspan: 2, align: 'center',rowspan: 2},
              {header: 'Sum', colspan: 3, align: 'center'}
             ],[
                 /********************Before(共3列)********************/
                 {},
                 {header: 'Before', colspan: 2, align: 'center'},               
                 /********************Sum(共3列)********************/
                 {header: 'Sum', colspan: 2, align: 'center'},
                 {}                
             ]                  
             
        ]
});