开发ASP.NET Atlas服务器端Extender控件—编写客…

其中dflying代表我们的Extender产生的客户端控件声明的前缀，ValidateUserNameBehavior代表客户端控件的标记名称，这两个名字要取好并记牢，在接下来的CS文件中也会用到。

这样，完整的ValidateUserNameBehavior.js源代码如下：

ValidateUserNameBehavior.js
// (c) Copyright Microsoft Corporation.
// This source is subject to the Microsoft Permissive License.
// See http://www.microsoft.com/resources/sharedsource/licensingbasics/sharedsourcelicenses.mspx.
// All other rights reserved.

Type.registerNamespace('Dflying.Atlas.ControlTookit.ValidateUserName');

Dflying.Atlas.ControlTookit.ValidateUserName.ValidateUserNameBehavior = function() {
Dflying.Atlas.ControlTookit.ValidateUserName.ValidateUserNameBehavior.initializeBase(this);

var _blurHandler;

var _CheckResultLabelID;
var _checkResultLabel;
var _ServiceName;
var _MethodName;
var _ValidMessage = "You can use this user name.";
var _InvalidMessage = "This user name has already been used, please choose another.";

this.get_CheckResultLabelID = function() {
return _CheckResultLabelID;
}
this.set_CheckResultLabelID = function(value) {
if (_CheckResultLabelID != value) {
_checkResultLabel = $(value);
debug.assert(_checkResultLabel != null, "CheckResultLabelID must be set to a valid DOM element.");
_CheckResultLabelID = value;
this.raisePropertyChanged('CheckResultLabelID');
}
}
this.get_ServiceName = function() {
return _ServiceName;
}
this.set_ServiceName = function(value) {
if (_ServiceName != value) {
_ServiceName = value;
this.raisePropertyChanged('ServiceName');
}
}
this.get_MethodName = function() {
return _MethodName;
}
this.set_MethodName = function(value) {
if (_MethodName != value) {
_MethodName = value;
this.raisePropertyChanged('MethodName');
}
}
this.get_ValidMessage = function() {
return _ValidMessage;
}
this.set_ValidMessage = function(value) {
if (_ValidMessage != value) {
_ValidMessage = value;
this.raisePropertyChanged('ValidMessage');
}
}
this.get_InvalidMessage = function() {
return _InvalidMessage;
}
this.set_InvalidMessage = function(value) {
if (_InvalidMessage != value) {
_InvalidMessage = value;
this.raisePropertyChanged('InvalidMessage');
}
}

this.initialize = function() {
Dflying.Atlas.ControlTookit.ValidateUserName.ValidateUserNameBehavior.callBaseMethod(this, 'initialize');

_blurHandler = Function.createDelegate(this, blurHandler);
this.control.element.attachEvent('onblur', _blurHandler);
}

this.dispose = function() {

if (_blurHandler) {
this.control.element.detachEvent('onblur', _blurHandler);
_blurHandler = null;
}

Dflying.Atlas.ControlTookit.ValidateUserName.ValidateUserNameBehavior.callBaseMethod(this, 'dispose');
}

this.getDescriptor = function() {
var td = Dflying.Atlas.ControlTookit.ValidateUserName.ValidateUserNameBehavior.callBaseMethod(this, 'getDescriptor');

td.addProperty('CheckResultLabelID', String);
td.addProperty('ServiceName', String);
td.addProperty('MethodName', String);
td.addProperty('ValidMessage', String);
td.addProperty('InvalidMessage', String);

return td;
}

function blurHandler() {
if (this.control.element.value == '') {
_checkResultLabel.innerHTML = '';
return;
}

Sys.Net.ServiceMethod.invoke(
_ServiceName,
_MethodName,
'',
{ userNameCandidate : this.control.element.value},
_onMethodComplete
);
}

function _onMethodComplete(result)
{
_checkResultLabel.innerHTML = result ? _ValidMessage : _InvalidMessage;
}

this.getClientState = function() {
var value = Dflying.Atlas.ControlTookit.ValidateUserName.ValidateUserNameBehavior.callBaseMethod(this, 'get_ClientState');
if (value == '') value = null;
return value;
}

this.setClientState = function(value) {
return Dflying.Atlas.ControlTookit.ValidateUserName.ValidateUserNameBehavior.callBaseMethod(this, 'set_ClientState',[value]);
}
}

Dflying.Atlas.ControlTookit.ValidateUserName.ValidateUserNameBehavior.registerSealedClass('Dflying.Atlas.ControlTookit.ValidateUserName.ValidateUserNameBehavior', Microsoft.AtlasControlExtender.BehaviorBase);

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