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动态修改 EXTJS grid里某几行中文字的颜色-解决办法

2012-04-03 
动态修改 EXTJSgrid里某几行中文字的颜色-急急急急急急急急急急急急急急急急急急我想点个button,然后将gri

动态修改 EXTJS grid里某几行中文字的颜色-急急急急急急急急急急急急急急急急急急
我想点个button,然后将grid里凡是列1里包含%字符的行找出来,然后修改这行第2列文字的颜色,当里面文字<0,显示红色,

请高手指点,多谢

[解决办法]

JScript code
 
Ext.onReady(function(){

  var myData = [
    ['3m Co',71.72,0.02,0.03,'9/1 12:00am'],
    ['Alcoa Inc',29.01,0.42,1.47,'9/1 12:00am'],
    ['Altria Group Inc',83.81,0.28,0.34,'9/1 12:00am'],
    ['American Express Company',52.55,0.01,0.02,'9/1 12:00am'],
    ['American International Group, Inc.',64.13,0.31,0.49,'9/1 12:00am'],
    ['AT&T Inc.',31.61,-0.48,-1.54,'9/1 12:00am'],
    ['Boeing Co.',75.43,0.53,0.71,'9/1 12:00am'],
    ['Caterpillar Inc.',67.27,0.92,1.39,'9/1 12:00am'],
    ['Citigroup, Inc.',49.37,0.02,0.04,'9/1 12:00am'],
    ['E.I. du Pont de Nemours and Company',40.48,0.51,1.28,'9/1 12:00am'],
    ['Exxon Mobil Corp',68.1,-0.43,-0.64,'9/1 12:00am'],
    ['General Electric Company',34.14,-0.08,-0.23,'9/1 12:00am'],
    ['General Motors Corporation',30.27,1.09,3.74,'9/1 12:00am'],
    ['Hewlett-Packard Co.',36.53,-0.03,-0.08,'9/1 12:00am'],
    ['Honeywell Intl Inc',38.77,0.05,0.13,'9/1 12:00am'],
    ['Intel Corporation',19.88,0.31,1.58,'9/1 12:00am'],
    ['International Business Machines',81.41,0.44,0.54,'9/1 12:00am'],
    ['Johnson & Johnson',64.72,0.06,0.09,'9/1 12:00am'],
    ['JP Morgan & Chase & Co',45.73,0.07,0.15,'9/1 12:00am'],
    ['McDonald\'s Corporation',36.76,0.86,2.40,'9/1 12:00am'],
    ['Merck & Co., Inc.',40.96,0.41,1.01,'9/1 12:00am'],
    ['Microsoft Corporation',25.84,0.14,0.54,'9/1 12:00am'],
    ['Pfizer Inc',27.96,0.4,1.45,'9/1 12:00am'],
    ['The Coca-Cola Company',45.07,0.26,0.58,'9/1 12:00am'],
    ['The Home Depot, Inc.',34.64,0.35,1.02,'9/1 12:00am'],
    ['The Procter & Gamble Company',61.91,0.01,0.02,'9/1 12:00am'],
    ['United Technologies Corporation',63.26,0.55,0.88,'9/1 12:00am'],
    ['Verizon Communications',35.57,0.39,1.11,'9/1 12:00am'],
    ['Wal-Mart Stores, Inc.',45.45,0.73,1.63,'9/1 12:00am']
  ];

  // example of custom renderer function
  function change(val){
    if(val > 0){
      return ' <span style="color:green;">' + val + ' </span>';
    }else if(val < 0){
      return ' <span style="color:red;">' + val + ' </span>';
    }
    return val;
  }

  // example of custom renderer function
  function pctChange(val){
    if(val > 0){
      return ' <span style="color:green;">' + val + '% </span>';
    }else if(val < 0){
      return ' <span style="color:red;">' + val + '% </span>';
    }
    return val;
  }

  // create the data store
  var store = new Ext.data.Store({
    proxy: new Ext.data.PagingMemoryProxy(myData),
    remoteSort:true,
    sortInfo: {field:'price', direction:'ASC'},
    reader: new Ext.data.ArrayReader({
      fields: [
      {name: 'company'},
      {name: 'price', type: 'float'},
      {name: 'change', type: 'float'},
      {name: 'pctChange', type: 'float'},
      {name: 'lastChange', type: 'date', dateFormat: 'n/j h:ia'}
      ]
    })
  });

  // create the Grid
  var grid = new Ext.grid.GridPanel({
    store: store,
    columns: [
      {id:'company',header: "Company", width: 160, sortable: true, dataIndex: 'company'},
      {header: "Price", width: 75, sortable: true, renderer: 'usMoney', dataIndex: 'price'},
      {header: "Change", width: 75, sortable: true, renderer: change, dataIndex: 'change'},
      {header: "% Change", width: 75, sortable: true, renderer: pctChange, dataIndex: 'pctChange'},
      {header: "Last Updated", width: 85, sortable: true, renderer: Ext.util.Format.dateRenderer('m/d/Y'), dataIndex: 'lastChange'}
    ],
    stripeRows: true,
    autoExpandColumn: 'company',
    height:320,
    width:600,
    frame:true,
    title:'Sliding Pager',

    plugins: new Ext.ux.PanelResizer({
      minHeight: 100
    }),
   
    bbar: new Ext.PagingToolbar({
      pageSize: 10,
      store: store,
      displayInfo: true,

      plugins: new Ext.ux.SlidingPager()
    })
  });

  grid.render('grid-example');

  store.load({params:{start:0, limit:10}});
});

这个是一个例子,lz参考一下。
或者看ext-2.2\examples\grid\sliding-pager.html
[解决办法]
点击button后调用一个函数,在这个函数中lz根据自己的业务规则重新new一个Ext.grid.ColumnModel,也就是上边代码中grid中的columns后边的对象,然后在需要重新渲染这个对象,调用grid.reconfigure(store,cm);就可以了。其中的参数store还是原来的store,cm就是你新new的对象,并且已经规定好那颜色了。
[解决办法]
通过对store的record进行值的比较,然后再配置ColumnModel的cls。

这些东西完全可以在
columnModel的renderer里面写,判断button是否被点击,然后把本cell的颜色变成红色

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