/* $Id: customer_survey.js,v 1.6 2009/05/14 13:12:36 igoryan Exp $ */

/* onsubmit handler */
function savePeriod(f) {
	if (f && f.period == 0) {
		alert(txt_survey_is_empty_notify);
		return false;
	}

	return checkRequiredAnswers();
}

/* onclick / onchange handler */
function setPeriod() {
	if (!this.form || this.form.period != 0)
		return;

	this.form.period = new Date().getTime();
}

/* Answer selection handler */
function checkSelectedAnswer(type,qid,aid) {
	var commentObj = document.getElementById('ansc_'+aid);
	var answerObj = document.getElementById('ans_'+aid);

	if (!answerObj)
		return true;
	
	if (commentObj)
		commentObj.disabled = !answerObj.checked;
	
	if (type != 'C' && questions && questions[qid] && questions[qid]['answers']) {
		for (var a in questions[qid].answers) {
			if (!hasOwnProperty(questions[qid].answers, a))
				continue;

			var answerid = questions[qid].answers[a];
			if (document.getElementById('ansc_' + answerid) && answerid != aid)
				document.getElementById('ansc_' + answerid).disabled = true;
		}
	}
	return true;
}

/* Check mandatory fields */
function checkRequiredAnswers() {
	if (questions) {
		for (var qid in questions) {
			if (hasOwnProperty(questions, qid) && questions[qid]['required'] == 'Y' && !checkAnswer(qid)) {
				requiredQuestionAlert(qid);
				return false;
			}
		}
	}
	return true;
}

/* Check if the question was answered */
function checkAnswer(qid) {
	var qType = questions[qid]['type'];
	var answered = false;

	switch (qType) {
		case 'N':
			if (document.getElementById('comment_'+qid)) 
				answered = document.getElementById('comment_'+qid).value.replace(/ /g, '').length > 0;
			break;
		case 'C':
		case 'R':
			if (questions[qid]['answers']) {
				for (var a in questions[qid].answers) {
					if (!hasOwnProperty(questions[qid].answers, a))
						continue;

					var answObj = document.getElementById('ans_' + questions[qid].answers[a]);
					if (answObj && answObj.checked) {
						answered = true;
						break;
					}
				}
			}
			break;
	}
	return answered;
}

/* function moves the user to an anchor position */
function requiredQuestionAlert(qid) {
	window.location = window.location.toString().replace(/#.*$/, '') + '#question'+qid;
	alert(substitute(txt_survey_mandatory_question_alert,'question',questions[qid]['question']));
	return false;
}

/* Set event handlers */
if (surveyForm && surveyForm.elements && surveyForm.elements.length > 0) {
	surveyForm.period = 0;
	for (var i = 0; i < surveyForm.elements.length; i++) {
		var obj = surveyForm.elements[i];
		if (obj.type == 'hidden' || !obj.name || obj.name.search(/^data/) == -1)
			continue;

		if (obj.type == 'checkbox' || obj.type == 'radio') {
			obj.onclick = setPeriod;
			if (obj.checked) {
				surveyForm.period = 1;
			}
		} else {
			obj.onchange = setPeriod;
			if (obj.value != "") {
				surveyForm.period = 1;
			}
		}
		
	}	
}