ew.js

AspMaker调用的自定义包

	
	if (!(object_value.indexOf("@") > -1 && object_value.indexOf(".") > -1))
		return false;    
	
	return true;
}
	
// GUID {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}	
function EW_checkGUID(object_value)	{
	if (object_value.length == 0)
		return true;
	if (object_value.length != 38)
		return false;
	if (object_value.charAt(0)!="{")
		return false;
	if (object_value.charAt(37)!="}")
		return false;	
	
	var hex_format = "0123456789abcdefABCDEF";
	var check_char;	
	
	for (var i = 1; i < 37; i++) {		
		if ((i==9) || (i==14) || (i==19) || (i==24)) {
			if (object_value.charAt(i)!="-")
				return false;
		} else {
			check_char = hex_format.indexOf(object_value.charAt(i));
			if (check_char < 0)
				return false;
		}
	}
	return true;
}
	
// Check file extension
function EW_checkfiletype(object_value) { 
	if (object_value.length == 0) 
		return true;
	if (typeof EW_UploadAllowedFileExt == "undefined")
		return true;  
	var fileTypes = EW_UploadAllowedFileExt.split(","); 
	var ext = object_value.substring(object_value.lastIndexOf(".")+1, object_value.length).toLowerCase(); 
	for (var i=0; i < fileTypes.length; i++) { 
		if (fileTypes[i] == ext) 
			return true; 
	} 
	return false; 
}	

// Update a combobox with filter value
// object_value_array format
// object_value_array[n] = option value
// object_value_array[n+1] = option text 1
// object_value_array[n+2] = option text 2
// object_value_array[n+3] = option filter value
function EW_updatecombo(obj, object_value_array, filter_value) {	
	var value = (obj.selectedIndex > -1) ? obj.options[obj.selectedIndex].value : null;
	for (var i = obj.length-1; i > 0; i--) {
		obj.options[i] = null;
	}	
	for (var j=0; j<object_value_array.length; j=j+4) {
		if (object_value_array[j+3].toUpperCase() == filter_value.toUpperCase()) {
			EW_newopt(obj, object_value_array[j], object_value_array[j+1], object_value_array[j+2]);			
		}	
	}
	EW_selectopt(obj, value);
}

// Create combobox option 
function EW_newopt(obj, value, text1, text2) {
	var text = text1;
	if (text2 != "")
		text += EW_fieldSep + text2;
	var optionName = new Option(text, value, false, false)
	var length = obj.length;
	obj.options[length] = optionName;
}

// Select combobox option
function EW_selectopt(obj, value) {
	if (value != null) {
		for (var i = obj.length-1; i>=0; i--) {
			if (obj.options[i].value.toUpperCase() == value.toUpperCase()) {
				obj.selectedIndex = i;
				break;
			}
		}
	}
}

// Get image width/height
function EW_getimagesize(file_object, width_object, height_object) {
	if (navigator.appVersion.indexOf("MSIE") != -1)	{
		myimage = new Image();
		myimage.onload = function () {
			width_object.value = myimage.width; height_object.value = myimage.height;
		}		
		myimage.src = file_object.value;
	}
}

// Get Netscape Version
function getNNVersionNumber() {
	if (navigator.appName == "Netscape") {
		var appVer = parseFloat(navigator.appVersion);
		if (appVer < 5) {
			return appVer;
		} else {
			if (typeof navigator.vendorSub != "undefined")
				return parseFloat(navigator.vendorSub);
		}
	}
	return 0;
}

// Get Ctrl key for multiple column sort
function ewsort(e, url) {	
	var ctrlPressed = 0;	
	if (parseInt(navigator.appVersion) > 3) {
		if (navigator.appName == "Netscape") {
			var ua = navigator.userAgent;
    	var isFirefox = (ua != null && ua.indexOf("Firefox/") != -1);
			if ((!isFirefox && getNNVersionNumber() >= 6) || isFirefox)				
				ctrlPressed = e.ctrlKey;
			else
				ctrlPressed = ((e.modifiers+32).toString(2).substring(3,6).charAt(1)=="1");			
		} else {
		 ctrlPressed = event.ctrlKey;
		}
		if (ctrlPressed) {
			var newPage = "<scr" + "ipt language=\"JavaScript\">setTimeout('window.location.href=\"" + url + "&ctrl=1\"', 10);</scr" + "ipt>";
			document.write(newPage);
			document.close();			
			return false;
		}
	}
	return true;
}

// Confirm Message
function ew_confirm(msg)
{
	var agree=confirm(msg);
	if (agree)
		return true ;
	else {
		return false ;
	}
}

// Confirm Delete Message
function ew_confirmdelete(msg)
{
	var agree = confirm(msg);
	if (agree)
		return true ;
	else {
		ew_cleardelete(); // clear delete status
		return false ;
	}
}

// Set mouse over color
function ew_mouseover(row) {
	row.mover = true; // mouse over
	if (!row.selected) {
		if (usecss)
			row.className = rowmoverclass;
		else
			row.style.backgroundColor = rowmovercolor;
	}
}

// Set mouse out color
function ew_mouseout(row) {
	row.mover = false; // mouse out
	if (!row.selected) {
		ew_setcolor(row);
	}
}

// Set row color
function ew_setcolor(row) {
	if (row.selected) {
		if (usecss)
			row.className = rowselectedclass;
		else
			row.style.backgroundColor = rowselectedcolor;
	}
	else if (row.edit) {
		if (usecss)
			row.className = roweditclass;
		else
			row.style.backgroundColor = roweditcolor;
	}
	else if ((row.rowIndex-firstrowoffset)%2) {
		if (usecss)
			row.className = rowaltclass;
		else
			row.style.backgroundColor = rowaltcolor;
	}
	else {
		if (usecss)
			row.className = rowclass;
		else
			row.style.backgroundColor = rowcolor;
	}
}

// Set selected row color
function ew_click(row) {
	if (row.deleteclicked)
		row.deleteclicked = false; // reset delete button/checkbox clicked
	else {
		var bselected = row.selected;
		ew_clearselected(); // clear all other selected rows
		if (!row.deleterow) row.selected = !bselected; // toggle
		ew_setcolor(row);		
	}
}

// Clear selected rows color
function ew_clearselected() {
	var table = document.getElementById(tablename);
	for (var i = firstrowoffset; i < table.rows.length; i++) {
		var thisrow = table.rows[i];
		if (thisrow.selected && !thisrow.deleterow) {
			thisrow.selected = false;
			ew_setcolor(thisrow);
		}
	}
}

// Clear all row delete status
function ew_cleardelete() {
	var table = document.getElementById(tablename);
	for (var i = firstrowoffset; i < table.rows.length; i++) {
		var thisrow = table.rows[i];
		thisrow.deleterow = false;
	}
}

// Click all delete button
function ew_clickall(chkbox) {
	var table = document.getElementById(tablename);
	for (var i = firstrowoffset; i < table.rows.length; i++) {
		var thisrow = table.rows[i];
		thisrow.selected = chkbox.checked;
		thisrow.deleterow = chkbox.checked;
		ew_setcolor(thisrow);
	}
}

// Click single delete link
function ew_clickdelete() {
	ew_clearselected();
	var table = document.getElementById(tablename);
	for (var i = firstrowoffset; i < table.rows.length; i++) {
		var thisrow = table.rows[i];
		if (thisrow.mover) {
			thisrow.deleteclicked = true;
			thisrow.deleterow = true;
			thisrow.selected = true;
			ew_setcolor(thisrow);
			break;
		}
	}
}

// Click multi delete checkbox
function ew_clickmultidelete(chkbox) {
	ew_clearselected();
	var table = document.getElementById(tablename);
	for (var i = firstrowoffset; i < table.rows.length; i++) {
		var thisrow = table.rows[i];
		if (thisrow.mover) {
			thisrow.deleteclicked = true;
			thisrow.deleterow = chkbox.checked;
			thisrow.selected = chkbox.checked;
			ew_setcolor(thisrow);
			break;
		}
	}
}

// Create XMLHTTP
// Note: AJAX feature requires IE5.5+, FF1+, and NS6.2+
function EW_createXMLHttp() {
	if (!(document.getElementsByTagName || document.all))
		return;		
	var ret = null;
	try {
		ret = new ActiveXObject('Msxml2.XMLHTTP');
	}	catch (e) {
	    try {
	        ret = new ActiveXObject('Microsoft.XMLHTTP');
	    } catch (ee) {
	        ret = null;
	    }
	}
	if (!ret && typeof XMLHttpRequest != 'undefined')
	    ret = new XMLHttpRequest();	
	return ret;
}

// Update a combobox with filter value by AJAX
function EW_ajaxupdatecombo(obj, filter_value, async) {
	if (!(document.getElementsByTagName || document.all))
		return;
	try {
		var value = (obj.selectedIndex > -1) ? obj.options[obj.selectedIndex].value : null;
		for (var i = obj.length-1; i > 0; i--) {
			obj.options[i] = null;
		}
		var s = eval('obj.form.s_' + obj.name + '.value');
		//var s = eval('s_' + obj.name);
		//if (!s || s == '' || filter_value == '') return;
		if (!s || s == '') return;
		var lc = eval('obj.form.lc_' + obj.name + '.value');
		if (!lc || lc == '') return;
		var ld1 = eval('obj.form.ld1_' + obj.name + '.value');
		if (!ld1 || ld1 == '') return;
		var ld2 = eval('obj.form.ld2_' + obj.name + '.value');
		if (!ld2 || ld2 == '') return;
		var xmlHttp = EW_createXMLHttp();
		if (!xmlHttp) return;		
		xmlHttp.open('get', EW_LookupFn + '?s=' + s + '&q=' + encodeURIComponent(filter_value) +
			'&lc=' + encodeURIComponent(lc) +
			'&ld1=' + encodeURIComponent(ld1) +
			'&ld2=' + encodeURIComponent(ld2), async);
		xmlHttp.onreadystatechange = function() {
			//alert(xmlHttp.responseText);					
			if (xmlHttp.readyState == 4 && xmlHttp.status == 200 &&
				xmlHttp.responseText) {
				//alert(xmlHttp.responseText);
				var object_value_array = xmlHttp.responseText.split('\r');
				for (var j=0; j<object_value_array.length-2; j=j+3) {
					EW_newopt(obj, object_value_array[j], object_value_array[j+1],
						object_value_array[j+2]);
				}
				EW_selectopt(obj, value);
			}
		}		
		xmlHttp.send(null);
	}	catch (e) {}
}

function EW_HtmlEncode(text) {
	var str = text;
	str = str.replace(/&/g, '&amp');
	str = str.replace(/\"/g, '&quot;');
	str = str.replace(/</g, '&lt;');
	str = str.replace(/>/g, '&gt;'); 
	return str;
}

// Google Suggest for textbox by AJAX
// object_value_array format
// object_value_array[n] = display value
// object_value_array[n+1] = display value 2
function EW_ajaxupdatetextbox(object_name) {
	var obj, as;	
	if (document.all) {
		obj = document.all(object_name);
		if (obj) as = document.all('as_' + object_name);		
	} else if (document.getElementById) {
		obj = document.getElementById(object_name);
		if (obj) as = document.getElementById('as_' + object_name);
	}	
	if (!obj || !as) return false;
	try {
		var s = eval('obj.form.s_' + obj.name + '.value');
		//var s = eval('s_' + obj.name);
		var q = obj.value;
		q = q.replace(/^\s*/, ''); // left trim				
		if (!s || s == '' || q.length == 0) return false;					
		var lt = eval('obj.form.lt_' + obj.name + '.value');
		if (!lt || lt == '') return;
		var xmlHttp = EW_createXMLHttp();
		if (!xmlHttp) return;				
		xmlHttp.open('get', EW_LookupFn + '?s=' + s + '&q=' + encodeURIComponent(q) +
			'&lt=' + encodeURIComponent(lt));
		xmlHttp.onreadystatechange = function() {
			//if (xmlHttp.readyState == 4) alert(xmlHttp.responseText);
			if (xmlHttp.readyState == 4 && xmlHttp.status == 200 &&
				xmlHttp.responseText) {										
				var object_value_array = xmlHttp.responseText.split('\r');
				var sHtml = '';
				for (var j=0; j<object_value_array.length-2; j=j+2) {
					var value = object_value_array[j];
					var text = object_value_array[j];
					if (object_value_array[j+1] != "")
						text += EW_fieldSep + object_value_array[j+1];
					var i = j/2 + 1;
					sCtrlID = object_name + "_mi_" + i;
					sFunc1 = "EW_astOnMouseClick(" + i + ", \"" + object_name + "\", \"" + as.id + "\")";
					sFunc2 = "EW_astOnMouseOver(" + i + ", \"" + object_name + "\")";
					sHtml += "<div class=\"ewAstListItem\" id=\"" + sCtrlID + "\" name=\"" + sCtrlID + "\" onclick='" + sFunc1 + "' + onmouseover='" + sFunc2 + "'>" + text + "</div>";
					// add hidden field to store the value of current item
					sMenuItemValueID = sCtrlID + "_value";
					sHtml += "\n\r";
					sHtml += "<input type=\"hidden\" id=\"" + sMenuItemValueID + "\" name=\"" + sMenuItemValueID + "\" value=\"" + EW_HtmlEncode(text) + "\">";
				}
				//alert(sHtml);	
				EW_astShowDiv(as.id, sHtml);
			} else {
				EW_astHideDiv(as.id);
			}
		}
		xmlHttp.send(null);
	}	catch (e) {}
	return false;
}

// Extended basic search clear form
function EW_clearForm(objForm){
	with (objForm) {
		for (var i=0; i<elements.length; i++){
			var tmpObj = eval(elements[i]);
			if (tmpObj.type == "checkbox" || tmpObj.type == "radio"){
				tmpObj.checked = false;
			} else if (tmpObj.type == "select-one"){
				tmpObj.selectedIndex = 0;
			} else if (tmpObj.type == "select-multiple") {
				for (var j=0; j<tmpObj.options.length; j++)
					tmpObj.options[j].selected = false;
			} else if (tmpObj.type == "text"){
				tmpObj.value = "";
			}
		}
	}
}

// Functions for adding new option dynamically

function EW_ShowAddOption(id) {
	if (!document.getElementById) return;
	var elem;
	elem = document.getElementById("ao_" + id);
	if (elem) elem.style.display = "block"; 
	elem = document.getElementById("cb_" + id);
	if (elem)	elem.style.display = "none";	
}

function EW_HideAddOption(id) {
	var elem;
	elem = document.getElementById("cb_" + id);
	if (elem)	elem.style.display = "inline"; 
	elem = document.getElementById("ao_" + id);
	if (elem) elem.style.display = "none"; 
}

function EW_PostNewOption(id) {
	var elem;
	var url = EW_AddOptFn + "?";
	elem = document.getElementById("ltn_" + id);
	url += "ltn=" + encodeURIComponent(elem.value);
	elem = document.getElementById("dfn_" + id);
	if (elem) url += "&dfn=" + encodeURIComponent(elem.value);
	elem = document.getElementById("dfq_" + id);
	if (elem) url += "&dfq=" + encodeURIComponent(elem.value);
	elem = document.getElementById("lfn_" + id);
	if (elem) url += "&lfn=" + encodeURIComponent(elem.value);
	elem = document.getElementById("lfq_" + id);
	if (elem) url += "&lfq=" + encodeURIComponent(elem.value);
	elem = document.getElementById("df2n_" + id);
	if (elem) url += "&df2n=" + encodeURIComponent(elem.value);
	elem = document.getElementById("df2q_" + id);
	if (elem) url += "&df2q=" + encodeURIComponent(elem.value);	
	
	var lf = document.getElementById("lf_" + id);
	var lfm = document.getElementById("lfm_" + id);
	if (lf) {
		if (EW_hasValue(lf, "TEXT")) {
			url += "&lf=" + encodeURIComponent(lf.value); 
		} else {
			if (!EW_onError(lf.form, lf, "TEXT", (lfm?lfm.value:"Missing link field value")))
				return false;		
		}
	}
	
	var df = document.getElementById("df_" + id);
	var dfm = document.getElementById("dfm_" + id);
	if (df) {
		if (EW_hasValue(df, "TEXT")) {
			url += "&df=" + encodeURIComponent(df.value); 
		} else {
			if (!EW_onError(df.form, df, "TEXT", (dfm?dfm.value:"Missing display field value")))
				return false;		
		}
	}
	
	var df2 = document.getElementById("df2_" + id);
	var df2m = document.getElementById("df2m_" + id);
	if (df2) {
		if (EW_hasValue(df2, "TEXT")) {
			url += "&df2=" + encodeURIComponent(df2.value); 
		} else {
			if (!EW_onError(df2.form, df2, "TEXT", (df2m?df2m.value:"Missing display field #2 value")))
				return false;		
		}
	}
	
	try {			
		var xmlHttp = EW_createXMLHttp();
		if (!xmlHttp) return;		
		xmlHttp.open('get', url, true); // not async					
		xmlHttp.onreadystatechange = function() {
			//alert(xmlHttp.responseText);					
			if (xmlHttp.readyState == 4 && xmlHttp.status == 200 &&
				xmlHttp.responseText) {				
				var opt = xmlHttp.responseText.split('\r');
				if (opt.length > 3 && opt[0]== 'OK') {
					var elem = document.getElementById(id);			
					if (elem) {																					
						EW_newopt(elem, opt[1], opt[2], opt[3]);								
						EW_HideAddOption(id);
						elem.options[elem.options.length-1].selected = true;
						elem.focus();
					}
				} else {
					alert(xmlHttp.responseText);
				}				
			}
		}		
		xmlHttp.send(null);
	}	catch (e) {}

}