pm.asp

网上商城的设计与实现

		{	// output a hidden field for each state object
			for (var hiddenName in this._objStateObjects)
			{
				var objState = this._objStateObjects[hiddenName];
				var strState = '';
				for (var name in objState)
				{
					if (objState[name] != null)
					{
						if (strState != '') strState += '&';
						strState += name + '=' + escape(objState[name]);
					}
				}
				strHTML += '<' + 'INPUT type=hidden name="_' + hiddenName + '_state" value="' + strState + '">\n';
			}
		}
		Response.Write(strHTML);
	}

@if (@debug)
	//*****************************************************************
	// function _SOM__reportError
	//  Reports error information in a JScript exception, as well as
	//  extra information related to the Scripting Object Model.
	//*****************************************************************
	function _SOM__reportError(e, strFile, strMethod, strDesc)
	{
		var output = '<br><font color=red>';
		    
		output += '<b>SCRIPTING OBJECT MODEL EXCEPTION: </b></font>';
		output += '<blockquote><b>FILE: </b>&nbsp;&nbsp;' + strFile + '<br>';
		output += '<b>FUNCTION: </b>&nbsp;&nbsp;' + strMethod + '<br>';
		output += '<b>DESCRIPTION: </b>&nbsp;&nbsp;' + strDesc + '</blockquote>';
		output += '<br>';
		output += '------------------------------';
		
		Response.Write(output);
	}
@end

@if (@trace_events)
//*****************************************************************
// function _SOM__traceEvent
//*****************************************************************
function _SOM__traceEvent(strObject,strEvent)
{
	if (this._trace_on)
	{
		output = '<br><font color=blue><b>EVENT TRACE: </b>&nbsp;</font>';
		output += '<b>' + strObject + '</b> fired <b>' + strEvent + '</b> event.'; 
		Response.Write(output);
	}
}
@end

@if (@trace_warnings)
//*****************************************************************
// function _SOM__traceWarning
//*****************************************************************
function _SOM__traceWarning(strWarning,strFileName,strFunctionName)
{
	if (this._trace_on)
	{
		output = '<br><font color=magenta><b>WARNING TRACE: </b>&nbsp;</font><blockquote>';
		if (typeof(strFileName) == 'string')
			output += '<b>FILE: </b>&nbsp;&nbsp;' + strFileName + '<br>';
		if (typeof(strFunctionName) == 'string')
			output += '<b>FUNCTION: </b>&nbsp;&nbsp;' + strFunctionName + '<br>'; 
		output += '<b>DESCRIPTION: </b>&nbsp;&nbsp;' + strWarning + '</blockquote>'; 
		Response.Write(output);
	}
}
@end

}	// end of _SOM_Object constructor function

// shared functions for handling databinding
function _SOM_getDataSource()
{	return this._objDataSource;		}

function _SOM_setDataSource(objDataSource)
{
	if (typeof(objDataSource) != 'object')
	{
		@if (@trace_warnings)
			thisPage._traceWarning('Err 425: Invalid argument [objDataSource].  Must provide a valid object or null.','pm.asp',this.name + '.setDataSource(objDataSource)');
		@end
		return false;
	}
	
	if ((this._objDataSource != null) && (this._strDataField != ''))
	{
		this._objDataSource.unadvise(this._rowEnterID);
		this._objDataSource.unadvise(this._beforeUpdateID);
	}					
	this._objDataSource = objDataSource;
	if ((this._objDataSource != null) && (this._strDataField != ''))
	{	
		this._rowEnterID = this._objDataSource.advise(RS_ONROWENTER, this.id + '._onrowenter(' + this._objDataSource.id + ', "' + this._strDataField + '");');
		this._beforeUpdateID = this._objDataSource.advise(RS_ONBEFOREUPDATE, this.id + '._onbeforeupdate(' + this._objDataSource.id + ', "' + this._strDataField + '");');
	}
	return true;
}
		
function _SOM_getDataField()
{	return this._strDataField;		}

function _SOM_setDataField(strDataField)
{	
	if ((this._objDataSource != null) && (this._strDataField != ''))
	{
		this._objDataSource.unadvise(this._rowEnterID);
		this._objDataSource.unadvise(this._beforeUpdateID);
	}
	this._strDataField = strDataField;
	if ((this._objDataSource != null) && (this._strDataField != ''))
	{
		this._rowEnterID = this._objDataSource.advise(RS_ONROWENTER, this.id + '._onrowenter(' + this._objDataSource.id + ', "' + this._strDataField + '");');
		this._beforeUpdateID = this._objDataSource.advise(RS_ONBEFOREUPDATE, this.id + '._onbeforeupdate(' + this._objDataSource.id + ', "' + this._strDataField + '");');
	}
	return true;
}

// ************************************************************************ 
// Microsoft Scripting Libary 
// Visual InterDev 6.0 EventManager Object for ASP
//
// Copyright 1998 Microsoft Corporation. All Rights Reserved.
// ************************************************************************ 
function CreateEventManager()
{
	return new _EventManager();
}

function _EventManager()
{
	if (typeof(_bEMPrototypeCalled) == 'undefined')
		_EM_Prototype();
	this._events = new Array;
	this._nLastAdviseID = 0;
}

function _EM_Prototype()
{	// public
	_EventManager.prototype.advise = _EM_advise;
	_EventManager.prototype.adviseDefaultHandler = _EM_adviseDefaultHandler;
	_EventManager.prototype.unadvise = _EM_unadvise;
	_EventManager.prototype.fireEvent = _EM_fireEvent;
	_EventManager.prototype.getEventCount = _EM_getEventCount;
	_EventManager.prototype.getEvent = _EM_getEvent;
	_EventManager.prototype.generateClientHandler = _EM_generateClientHandler;
	_EventManager.prototype.generateClientHandlers = _EM_generateClientHandlers;

	_bEMPrototypeCalled = 1;
	
	//scope implementation to _EM_Prototype function

	function _EM_Advisor()
	{
		this.funcToCall = 0;
		this.nAdviseID = 0;
		this.nPriority = 0;
	}

	function _EM_advise(strEvent,funcToCall,nPriority)
	{
		if ((typeof(strEvent) == 'string') && (strEvent != '') && 
			(typeof(funcToCall) != 'undefined'))
		{
			if (typeof(this._events[strEvent]) == 'undefined')
				this._events[strEvent] = new Array;

			var adviseList = this._events[strEvent];
			var objAdvisor = new _EM_Advisor;
			var nLen = adviseList.length;
			objAdvisor.funcToCall = funcToCall;
			objAdvisor.nAdviseID = ++this._nLastAdviseID;
			
			// maintain list sorted in descending priority
			if (typeof(nPriority) == 'number')
				objAdvisor.nPriority = nPriority;
				
			if (nLen == 0 || objAdvisor.nPriority <= adviseList[nLen-1].nPriority)
			{	// same or lower priority as last item, append to end
				adviseList[nLen] = objAdvisor;
			}
			else
			{	// higher priority than last item, insert in priority order
				for (var i=0; i < nLen; i++)
				{
					if (objAdvisor.nPriority > adviseList[i].nPriority)
						break;
				}
				// insert item at priority ordered index
				var aTemp = adviseList.slice(i);
				adviseList.length = i;
				adviseList[i] = objAdvisor;
				this._events[strEvent] = adviseList.concat(aTemp);
			}
	
			return this._nLastAdviseID;
		}
		return -1;
	}

	function _EM_adviseDefaultHandler(strName,strEvent)
	{
		var strDefaultHandler = strName + '_' + strEvent;
		if (eval('typeof(' + strDefaultHandler + ')') == 'function' ||
			eval('typeof(' + strDefaultHandler + ')') == 'unknown')
			return this.advise(strEvent,strDefaultHandler + '()');
		return -1;
	}

	function _EM_unadvise(strEvent,nAdviseID)
	{
		if ((typeof(strEvent) != 'undefined') && 
			(nAdviseID != 'undefined') && 
			(typeof(this._events[strEvent]) != 'undefined'))
		{
			var adviseList = this._events[strEvent];
			var nLen = adviseList.length
			for (var i=0; i < nLen; i++)
			{
				if (adviseList[i].nAdviseID == nAdviseID)
				{
					var aTemp = adviseList.slice(i+1);
					adviseList.length = i;
					this._events[strEvent] = adviseList.concat(aTemp);
					return true;
				}
			}
		}
		return false;
	}

	function _EM_fireEvent(strEvent)
	{
		if (typeof(this._events[strEvent]) != 'undefined')
		{
			var bReturn = true;
			for (var i=0; i < this._events[strEvent].length; i++)
				_EM__fireEvent(this._events[strEvent][i].funcToCall);
		}
	}

	function _EM_getEventCount()
	{
			var nLength = 0;
			for (var event in this._events)
				nLength++;
			return nLength;
	}

	function _EM_getEvent(nIndex)
	{
		var i = 0;
		for (var event in this._events)
		{
			if (nIndex == i)
				return event;
		}
		return '';
	}

	function _EM_generateClientHandler(strName,strEvent)
	{
		return "thisPage._fireEvent('" + strName + "','" + strEvent + "');";
	}

	function _EM_generateClientHandlers(strName)
	{
		var strHandlers = '';
		for (var event in this._events)
			strHandlers += ' ' + event + '="' + this.generateClientHandler(strName,event) + ' return false;"';
		return strHandlers;
	}

}	// end of _EM_Prototype function

// shared function for firing events, used by other script components
function _EM__fireEvent(funcToFire)
{
	if (typeof(funcToFire) == 'string')
		eval(funcToFire);
	else if (typeof(funcToFire) == 'function')
		funcToFire();
}

// shared function for mapping client events to server eventhandlers
function _EM__onclientevent(strName,strEvent)
{	// validate strName is an existing object
	var object = null;
	if (typeof(RuntimeObject) != 'undefined')
	{	// use global namespace to acquire object of 'strName'
		var objects = RuntimeObject(strName);
		object = objects[strName];
	}

	if (object != null && typeof(object) == 'object' && typeof(object._objEventManager) == 'object')
	{
		@if (@trace_events)
			thisPage._traceEvent(strName,strEvent);
		@end
		object._objEventManager.fireEvent(strEvent);
	}
}

</SCRIPT>