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EXT EditorGridPanel 中用复选框表示真假值,扩展官方示例

 2009-09-26 00:00:00 来源:WEB开发网   
核心提示:图片看不清楚?请点击这里查看原图(大图)。在学习中Ext.grid.EditorGridPanel 的时候碰到一个知识点,如何用复选框来表示真假值,当然我们可以直接这样 Js代码 {header:"管理员?",dataIndex:'manager',width:55,editor:n

EXT EditorGridPanel 中用复选框表示真假值,扩展官方示例

图片看不清楚?请点击这里查看原图(大图)。 

在学习中Ext.grid.EditorGridPanel 的时候碰到一个知识点,如何用复选框来表示真假值,当然我们可以直接这样

Js代码

{ 
  header : "管理员?", 
  dataIndex : 'manager', 
  width : 55, 
  editor : new Ext.form.CheckBox() 
} 

但是这样给我们的感觉不是很好,每次都要我们点击才会出现CheckBox,不能让他默认就显示在哪里,而且表示当前值?官方给了我们一个示例,下面是示例的源代码

Js代码  

/* 
 * Ext JS Library 2.2 
 * Copyright(c) 2006-2008, Ext JS, LLC. 
 * licensing@extjs.com 
 * 
 * http://extjs.com/license 
 */ 
 
Ext.onReady(function(){ 
  Ext.QuickTips.init(); 
 
  function formatDate(value){ 
    return value ? value.dateFormat('M d, Y') : ''; 
  }; 
  // shorthand alias 
  var fm = Ext.form; 
 
  // custom column plugin example 
  var checkColumn = new Ext.grid.CheckColumn({ 
    header: "Indoor?", 
    dataIndex: 'indoor', 
    width: 55 
  }); 
 
  // the column model has information about grid columns 
  // dataIndex maps the column to the specific data field in 
  // the data store (created below) 
  var cm = new Ext.grid.ColumnModel([{ 
      id:'common', 
      header: "Common Name", 
      dataIndex: 'common', 
      width: 220, 
      editor: new fm.TextField({ 
        allowBlank: false 
      }) 
    },{ 
      header: "Light", 
      dataIndex: 'light', 
      width: 130, 
      editor: new Ext.form.ComboBox({ 
        typeAhead: true, 
        triggerAction: 'all', 
        transform:'light', 
        lazyRender:true, 
        listClass: 'x-combo-list-small' 
      }) 
    },{ 
      header: "Price", 
      dataIndex: 'price', 
      width: 70, 
      align: 'right', 
      renderer: 'usMoney', 
      editor: new fm.NumberField({ 
        allowBlank: false, 
        allowNegative: false, 
        maxValue: 100000 
      }) 
    },{ 
      header: "Available", 
      dataIndex: 'availDate', 
      width: 95, 
      renderer: formatDate, 
      editor: new fm.DateField({ 
        format: 'm/d/y', 
        minValue: '01/01/06', 
        disabledDays: [0, 6], 
        disabledDaysText: 'Plants are not available on the weekends' 
      }) 
    }, 
    checkColumn 
  ]); 
 
  // by default columns are sortable 
  cm.defaultSortable = true; 
 
  // this could be inline, but we want to define the Plant record 
  // type so we can add records dynamically 
  var Plant = Ext.data.Record.create([ 
      // the "name" below matches the tag name to read, except "availDate" 
      // which is mapped to the tag "availability" 
      {name: 'common', type: 'string'}, 
      {name: 'botanical', type: 'string'}, 
      {name: 'light'}, 
      {name: 'price', type: 'float'},       // automatic date conversions 
      {name: 'availDate', mapping: 'availability', type: 'date', dateFormat: 'm/d/Y'}, 
      {name: 'indoor', type: 'bool'} 
   ]); 
 
  // create the Data Store 
  var store = new Ext.data.Store({ 
    // load using HTTP 
    url: 'plants.xml', 
 
    // the return will be XML, so lets set up a reader 
    reader: new Ext.data.XmlReader({ 
        // records will have a "plant" tag 
        record: 'plant' 
      }, Plant), 
 
    sortInfo:{field:'common', direction:'ASC'} 
  }); 
 
  // create the editor grid 
  var grid = new Ext.grid.EditorGridPanel({ 
    store: store, 
    cm: cm, 
    renderTo: 'editor-grid', 
    width:600, 
    height:300, 
    autoExpandColumn:'common', 
    title:'Edit Plants?', 
    frame:true, 
    plugins:checkColumn, 
    clicksToEdit:1, 
 
    tbar: [{ 
      text: 'Add Plant', 
      handler : function(){ 
        var p = new Plant({ 
          common: 'New Plant 1', 
          light: 'Mostly Shade', 
          price: 0, 
          availDate: (new Date()).clearTime(), 
          indoor: false 
        }); 
        grid.stopEditing(); 
        store.insert(0, p); 
        grid.startEditing(0, 0); 
      } 
    }] 
  }); 
 
  // trigger the data store load 
  store.load(); 
}); 
 
Ext.grid.CheckColumn = function(config){ 
  Ext.apply(this, config); 
  if(!this.id){ 
    this.id = Ext.id(); 
  } 
  this.renderer = this.renderer.createDelegate(this); 
}; 
 
Ext.grid.CheckColumn.prototype ={ 
  init : function(grid){ 
    this.grid = grid; 
    this.grid.on('render', function(){ 
      var view = this.grid.getView(); 
      view.mainBody.on('mousedown', this.onMouseDown, this); 
    }, this); 
  }, 
 
  onMouseDown : function(e, t){ 
    if(t.className && t.className.indexOf('x-grid3-cc-'+this.id) != -1){ 
      e.stopEvent(); 
      var index = this.grid.getView().findRowIndex(t); 
      var record = this.grid.store.getAt(index); 
      record.set(this.dataIndex, !record.data[this.dataIndex]); 
    } 
  }, 
 
  renderer : function(v, p, record){ 
    p.css += ' x-grid3-check-col-td'; 
    return '<div class="x-grid3-check-col'+(v?'-on':'')+' x-grid3-cc-'+this.id+'"> </div>'; 
  } 
}; 

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Tags:EXT EditorGridPanel 中用

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