mono/mcs/class/System.Web/resources/WebUIValidation.js

/*
 * WebUIValidation.js
 *
 * Authors:
 *   Chris Toshok ([email protected])
 *
 * (c) 2005 Novell, Inc. (http://www.novell.com)
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

var have_validation_summaries = false;

function ValidatorOnLoad ()
{
	if (typeof (Page_ValidationSummaries) != 'undefined' && Page_ValidationSummaries != null)
		have_validation_summaries = true;

	for (var v in Page_Validators) {
		var vo = Page_Validators [v];
		var funcname = vo.getAttribute ("evaluationfunction");

		func = this[funcname];

		vo["evaluationfunction"] = func;

		if (vo.getAttribute ("isvalid") == null)
			vo.setAttribute ("isvalid", "true");

		if (vo.getAttribute ("enabled") == null)
			vo.setAttribute ("enabled", "true");

		func = vo ["evaluationfunction"];
	}

	Page_ValidationActive = true;
}

var validation_result = true;

function ValidatorCommonOnSubmit ()
{
	/* handle validation summaries here */
	if (validation_result == false && have_validation_summaries) {

		for (var vi in Page_ValidationSummaries)  {
			var vs = Page_ValidationSummaries[vi];

			var header = vs.getAttribute ("headertext");
			if (header == null)
				header = "";

			attr = vs.getAttribute ("showsummary");
			if (attr == null || attr.toLowerCase() == "true") {
				var displaymode = vs.getAttribute ("displaymode");
				if (displaymode == null) displaymode = "Bulleted";

				var html = "";

				if (displaymode == "List") {
					list_pre = "";
					list_post = "";
					item_pre = "";
					item_post = "<br>";
				}
				else if (displaymode == "SingleParagraph") {
					list_pre = "";
					list_post = "<br>";
					item_pre = "";
					item_post = " ";
				}
				else {
					list_pre = "<ul>";
					list_post = "</ul>";
					item_pre = "\n<li>";
					item_post = "</li>";
				}

				html += header;
				html += list_pre;
				for (var v in Page_Validators) {
					var vo = Page_Validators [v];

					if (vo.getAttribute ("isvalid").toLowerCase() == "false") {
						var text = ValidatorGetErrorMessage (vo);
						if (text != null && text != "") {
							html += item_pre + text + item_post;
						}
					}
				}
				html += list_post;

				vs.innerHTML = html;
				vs.style.display = "block";
			}

			attr = vs.getAttribute ("showmessagebox");
			if (attr != null && attr.toLowerCase() == "true") {
				var v_contents = "";

				for (var v in Page_Validators) {
					var vo = Page_Validators [v];

					if (vo.getAttribute ("isvalid").toLowerCase() == "false") {
						var text = ValidatorGetErrorMessage (vo);
						if (text != null && text != "") {
							v_contents += "-" + text + "\n";
						}
					}
				}

				var alert_header = header;
				if (alert_header != "")
					alert_header += "\n";
				summary_contents = alert_header + v_contents;
				alert (summary_contents);
			}
		}
	}

	rv = validation_result;
	validation_result = true;
	return rv;
}

function ValidatorGetValue (controlname)
{
	var el = GetElement (controlname);

	/* if the element has a 'value' attribute, return it */
	if (typeof (el.value) != 'undefined' && el.value != null) {
		return el.value;
	}

	/* if it's a select, loop over the options looking for the
	 * selected one. */
	if (typeof (el.selectedIndex) != 'undefined') {
		return el.options[el.selectedIndex].value;
	}
}

function ValidatorTrim (s)
{
	s = s.replace (/^\s+/g, "");
	s = s.replace (/\s+$/g, "");

	return s;
}

function Page_ClientValidate()
{
	validation_result = true;

	/* clear out the existing text from all our summaries */
	if (have_validation_summaries) {
		for (var vi in Page_ValidationSummaries) {
			var vs = Page_ValidationSummaries[vi];
			vs.style.display = "none";
			vs.innerHTML = "";
		}
	}

	for (var v in Page_Validators) {
		var vo = Page_Validators [v];
		var evalfunc = vo["evaluationfunction"];
		var result = false;

		if (vo.getAttribute ("enabled").toLowerCase() == "false") {
			result = true;
			ValidatorSucceeded (vo);
		}
		else {
			result = evalfunc (vo);
		}

		if (!result)
			validation_result = false;

		vo.setAttribute("isvalid", result ? "true" : "false");
	}

	return validation_result;
}

/*******************/
/* type converters */

function ToInteger (s)
{
	if ((v = parseInt(s, 10)) != s - 0)
		return null;
	else
		return v;
}

function ToString (s)
{
	return s;
}

function ToDouble (s)
{
	if ((v = parseFloat(s)) != s - 0)
		return null;
	else
		return v;
}

function ToDate (s)
{
	/* NYI */
	return null;
}

function ToCurrency (s)
{
	/* NYI */
	return null;
}

/*******************/
/* validators	  */

function CompareValidatorEvaluateIsValid (validator)
{
	var ControlToCompare = validator.getAttribute ("controltocompare");
	var ValueToCompare = validator.getAttribute ("valuetocompare");
	var Operator = validator.getAttribute ("operator").toLowerCase();
	var ControlToValidate = validator.getAttribute ("controltovalidate");
	var DataType = validator.getAttribute ("datatype");

	var ctrl_value = ValidatorTrim (ValidatorGetValue (ControlToValidate));
	var compare = (ControlToCompare != null && ControlToCompare != "") ? ValidatorTrim (ValidatorGetValue (ControlToCompare)) : ValueToCompare;

	var left = Convert (ctrl_value, DataType);
 	if (left == null) {
		ValidatorFailed (validator);
		return false;
	}
      
	var right = Convert (compare, DataType);
	if (right == null) {
		ValidatorSucceeded (validator);
		 return true;
	}

	var result = false;
   
	if (Operator == "equal") {
		result = (left == right);
	}
	else if (Operator == "notequal") {
		result = (left != right);
	}
	else if (Operator == "lessthan") {
		result = (left < right);
	}
	else if (Operator == "lessthanequal") {
		result = (left <= right);
	}
	else if (Operator == "greaterthan") {
		result = (left > right);
	}
	else if (Operator == "greaterthanequal") {
		result = (left >= right);
	}

	if (result == false) {
		ValidatorFailed (validator);
		return false;
	}
	else {
		ValidatorSucceeded (validator);
		return true;
	}
}

function RangeValidatorEvaluateIsValid (validator)
{
	var MinimumValue = parseInt (validator.getAttribute ("minimumvalue"));
	var MaximumValue = parseInt (validator.getAttribute ("maximumvalue"));
	var ControlToValidate = validator.getAttribute ("controltovalidate");
	var DataType = validator.getAttribute ("datatype");

	var ctrl_value = ValidatorTrim (ValidatorGetValue (ControlToValidate));

	if (ctrl_value == "") {
		ValidatorSucceeded (validator);
		return true;
	}

	var val = Convert (ctrl_value, DataType);
	if (val == null || val < MinimumValue || val > MaximumValue) {
		ValidatorFailed (validator);
		return false;
	}
	else {
		ValidatorSucceeded (validator);
		return true;
	}
}

function RegularExpressionValidatorEvaluateIsValid (validator)
{
	var ValidationExpression = validator.getAttribute ("validationexpression");
	var ControlToValidate = validator.getAttribute ("controltovalidate");

	var ctrl_value = ValidatorTrim (ValidatorGetValue (ControlToValidate));

	if (ctrl_value == "") {
		ValidatorSucceeded (validator);
		return true;
	}

	var r = new RegExp (ValidationExpression);
	match = r.exec (ctrl_value);
	if (match == null || match[0] == "") {
		ValidatorFailed (validator);
		return false;
	}
	else {
		ValidatorSucceeded (validator);
		return true;
	}
}

function RequiredFieldValidatorEvaluateIsValid (validator)
{
	var InitialValue = validator.getAttribute ("initialvalue");
	var ControlToValidate = validator.getAttribute ("controltovalidate");

	var ctrl_value = ValidatorTrim (ValidatorGetValue (ControlToValidate));

	if (ctrl_value == ValidatorTrim (InitialValue)) {
		ValidatorFailed (validator);
		return false;
	}
	else {
		ValidatorSucceeded (validator);
		return true;
	}
}

function CustomValidatorEvaluateIsValid (validator)
{
	var InitialValue = validator.getAttribute ("initialvalue");
	var ControlToValidate = validator.getAttribute ("controltovalidate");

	if (!ControlToValidate) {
		ValidatorSucceeded (validator);
		return true;
	}

	var evaluationfunc = validator.getAttribute ("clientvalidationfunction");

	var ctrl_value = ValidatorTrim (ValidatorGetValue (ControlToValidate));

	var result = true;

	if (evaluationfunc && evaluationfunc != "") {
		args = {Value:ctrl_value, IsValid:false};
		eval (evaluationfunc + "(validator, args)");
		result = args.IsValid;
	}

	if (result) {
		ValidatorSucceeded (validator);
		return true;
	}
	else {
		ValidatorFailed (validator);
		return false;
	}
}

/*********************/
/* utility functions */

function Convert (s, ty)
{
	var cvt = this ["To" + ty];
	if (typeof (cvt) == 'function')
		return cvt (s);
	else
		return null;
}

function ValidatorUpdateDisplay (v, valid)
{
	var display = v.getAttribute ("display");

	/* for validators that aren't displayed, do nothing */
	if (display == "None") {
		return;
	}

	v.style.visibility = (valid ? "hidden" : "visible");
	if (display == "Dynamic") {
		v.style.display = (valid ? "none" : "inline");
	}
}

function ValidatorGetErrorMessage (v)
{
	var text = v.getAttribute ("errormessage");
	if (text == null || text == "")
		text = v.getAttribute ("text");	
	if (text == null)
		text = "";
	return text;
}

function ValidatorGetText (v)
{
	var text = v.getAttribute ("text");	
	if (text == null || text == "")
		text = v.getAttribute ("errormessage");
	if (text == null)
		text = "";
	return text;
}

function ValidatorFailed (v)
{
	var text = ValidatorGetText (v);
	v.innerHTML = text;

	ValidatorUpdateDisplay (v, false);
}

function ValidatorSucceeded (v)
{
	v.innerHTML = "";

	ValidatorUpdateDisplay (v, true);
}

function GetElement(id)
{
	var x = document.getElementById ? document.getElementById (id) :
					  ((document.all) ? document.all [id] : null);
	return x;
}