ExtJs 扩展类CheckColumn修改源码，支持按条件禁用启用下拉框功能

长话短说，具体的请看图

需求如图：

Ext.ns('Ext.ux.grid');
Ext.ux.grid.CheckColumn = Ext.extend(Ext.grid.Column, {
editable: true,
processEvent: function (name, e, grid, rowIndex, colIndex) {
if (name == 'mousedown') {
prj.curGrid = grid;
this.init(name, e, grid, rowIndex, colIndex);
var record = grid.store.getAt(rowIndex);
this.fireEvent('checkchange', this, record.data[this.dataIndex]);
if (this.editable) {
record.set(this.dataIndex, !record.data[this.dataIndex]);
return false;
} else {
return Ext.grid.ActionColumn.superclass.processEvent.apply(this, arguments);
}
} else {
return Ext.grid.ActionColumn.superclass.processEvent.apply(this, arguments);
}
},
renderer: function (v, p, record) {
p.css += ' x-grid3-check-col-td';
return String.format('<div class="x-grid3-check-col{0}">&#160;</div>', v ? '-on' : '');
},
init: Ext.emptyFn,
setEditable: function (f) {
this.editable = f;
}
});

// register ptype. Deprecate. Remove in 4.0
Ext.preg('checkcolumn', Ext.ux.grid.CheckColumn);

// backwards compat. Remove in 4.0
Ext.grid.CheckColumn = Ext.ux.grid.CheckColumn;

// register Column xtype
Ext.grid.Column.types.checkcolumn = Ext.ux.grid.CheckColumn;

{
header: "证书", dataIndex: "MAT_CERTIFICATE", id: 'MAT_CERTIFICATE', width: 90, align: 'center', xtype: "checkcolumn", listeners: {
checkchange: function (column, checked) {
if (checked) {
certificateTypeCombo.disable();
} else {
certificateTypeCombo.enable();
}
}
}
},
{ header: "证书类型", dataIndex: "MAT_CERTIFICATE_TYPE", width: 120, align: 'center', editor: certificateTypeCombo, renderer: LCE_TYPE.toValue }
------------------------------------------------------------
var LCE_TYPE = new Ext.data.RSStore({
url: "STL001.csx?tag=GetLceType",
fields: ["MSID_N","MSVALUE" ],
root: "data",
id: "MSID_N",
autoLoad: true,
toValue: function (v) {
var rec = LCE_TYPE.getById(v);
return rec ? rec.data.MSVALUE : v;
}
});

var certificateTypeCombo = new Ext.form.SComboBox({
store: LCE_TYPE,
displayField: 'MSVALUE',
valueField: 'MSID_N',
mode: 'local',
disabled: true,
triggerAction: 'all',
listeners: {
focus: function (res) {
debugger;
var res = c_grid.getSelectionModel().getSelections();
if (res[0].data.MAT_CERTIFICATE == false) {
certificateTypeCombo.disable()
}
else {
certificateTypeCombo.enable() ;
}
}
}
});