/**
 * forms.js
 *
 * Copyright 2005 by ProStores Inc., All Rights Reserved.
 *
 * Revision history:
 * Date      Ini Description
 * --------- --- -----------
 * 15-Mar-02 ACB Initial version created.
 * 17-Apr-02 JLW Commented out show/hide of help buttons - can remove later
 * 17-Aug-05 JBJ Added checkAll function for checking all checkboxes on a named form.
 * 01-Sep-06 MGG Add method to check a string for all digits. (#15453) 
 * 21-Feb-07 TDR Check to make sure window.events exists before accessing it (16614).
 */

/**
 * This script contains the code necessary to expand and collapse
 * FORM sections.
 */

// Initialize global form variables.
var aFormSection = new Array();
var strFieldFocus = null;

// Initialize form expand/collapse images.
var IMAGE_COLLAPSED_FORMS = "/storeadmin/images/plus.gif";
var IMAGE_EXPANDED_FORMS = "/storeadmin/images/minus.gif";

// Cache images 

if (isAdmin) {
	expandformon = new Image(14,14);
	expandformon.src = imagePath  + 'navdownform-on.gif';
	expandformoff = new Image(14,14);
	expandformoff.src = imagePath  + 'navdownform.gif';
	
	collapseformon = new Image(14,14);
	collapseformon.src = imagePath  +'navupform-on.gif';
	collapseformoff = new Image(14,14);
	collapseformoff.src = imagePath  + 'navupform.gif';
}

/**
 * This function is the object constructor for each form section.
 * It is called from within the body of the form pages.
 */
function oDiv(strSection, strVisibility){
	this.getId = strSection;
	this.getVisibility = strVisibility;
	return this;
}

/**
 * This function is the object constructor for each form field
 * that will be edited.
 * It is called from within the body of the form pages.
 */
function oField(strFieldLabel, strField, strSection){
	this.getFieldLabel = strFieldLabel;
	this.getField = strField;
	this.getSection = strSection;
	return this;
}

/**
 * This function expands/collapses all sections within a form.
 */
function toggleForm(strAction) {
    var strVisibility = strAction;
	if (aFormSection != null && aFormSection.length > 0) {
	    var strDisplay = "";
		for (i = 1; i < aFormSection.length; i++) {
			var strSection = aFormSection[i].getId;
			if (strAction == null)
			    strVisibility = aFormSection[i].getVisibility;
			else
			    strVisibility = strAction;

			var strDivId = "div" + strSection;
			var strImgId = "img" + strSection;
			/**var strHelpId = "help" + strSection;*/

			if (strVisibility == "collapse") {
			    strDisplay = "none";
			    strImage = IMAGE_COLLAPSED_FORMS;
			}
			else {
			    strDisplay = "";
			    strImage = IMAGE_EXPANDED_FORMS;
			}
			   
			// Determine browser based upon defined objects.
	        if(document.getElementById && document.getElementById(strDivId)) {
                // Browser is IE5+ or Netscape6+
                document.getElementById(strDivId).style.display = strDisplay;		
               /** document.getElementById(strHelpId).style.display = strDisplay;*/		
                if (document.getElementById(strImgId))
                    document.getElementById(strImgId).src = strImage;		
    	    }
    	    else if (document.all && document.all(strDivId)) {
                // Browser is IE 4+:
                document.all(strDivId).style.display = strDisplay;		
               /** document.all(strHelpId).style.display = strDisplay;*/		
                if (docuemnt.all(strImgId))
                    document.all(strImgId).src = strImage;
    	    }
	    }
	}
}

/**
 * This function expands/collapses a specific section within a form.
 */
function toggleFormSection(strSection) {
	var strDivId = "div" + strSection;
	var strImageId = "img" + strSection;
	/**var strHelpId = "help" + strSection;*/
	var strEndId = "end" + strSection

	// Toggle the 'display' property and the expand/collapse image.
	// Determine browser based upon defined objects.
	if(document.getElementById && document.getElementById(strDivId)) {
    	// Browser is IE5+ or Netscape6+
    	if (document.getElementById(strDivId).style.display == "none") {
    	    // Section is not displayed.  Make it visible.
		    document.getElementById(strDivId).style.display = "";		
			/**document.getElementById(strHelpId).style.display = "";*/
		    document.getElementById(strImageId).src = IMAGE_EXPANDED_FORMS;
		    // Set focus to end of section
		    document.getElementById(strEndId).focus;
    	}
    	else {    
    	    // Section is showing.  Hide it.
		    document.getElementById(strDivId).style.display = "none";		
			/**document.getElementById(strHelpId).style.display = "none";*/
		    document.getElementById(strImageId).src = IMAGE_COLLAPSED_FORMS;		
		}
    }
    else if (document.all && document.all(strDivId)) {
    	// Browser is IE 4+:
    	if (document.all(strDivId).style.display == "none") {
    	    // Section is not display.  Make it visible.
    	    document.all(strDivId).style.display = "inline";
			/**document.all(strHelpId).style.display = "inline";*/
    		document.all(strImageId).src = IMAGE_EXPANDED_FORMS;
        }
        else {
            // Section is showing.  Hide it.
    	    document.all(strDivId).style.display = "none";
			/**document.all(strHelpId).style.display = "none";*/
    		document.all(strImageId).src = IMAGE_COLLAPSED_FORMS;
        }
    }
}

/**
 * This function expands a specific section within a form.
 */
function expandFormSection(strSection) {
	var strDivId = "div" + strSection;
	var strImageId = "img" + strSection;
	/**var strHelpId = "help" + strSection;*/
	var strEndId = "end" + strSection

	// Toggle the 'display' property and the expand/collapse image.
	// Determine browser based upon defined objects.
	if(document.getElementById && document.getElementById(strDivId)) {
    	// Browser is IE5+ or Netscape6+
    	if (document.getElementById(strDivId).style.display == "none") {
    	    // Section is not displayed.  Make it visible.
		    document.getElementById(strDivId).style.display = "";		
			/**document.getElementById(strHelpId).style.display = "";*/
		    document.getElementById(strImageId).src = IMAGE_EXPANDED_FORMS;
		    // Set focus to end of section
		    document.getElementById(strEndId).focus;
    	}
    }
    else if (document.all && document.all(strDivId)) {
    	// Browser is IE 4+:
    	if (document.all(strDivId).style.display == "none") {
    	    // Section is not display.  Make it visible.
    	    document.all(strDivId).style.display = "inline";
			/**document.all(strHelpId).style.display = "inline";*/
    		document.all(strImageId).src = IMAGE_EXPANDED_FORMS;
        }
    }
}

/**
 * This function edits all required fields.
 */
function isValidRequiredFields(form, aRequiredField) {
    var REQUIRED_MESSAGE = " is a required field."
    var bValid = true;
	if (aRequiredField != null && aRequiredField.length > 0) {
	    for (var i = 1; i < aRequiredField.length; i++) {
            for (var j = 0; j < form.elements.length; j++) {
                if (form.elements[j].name != null && (form.elements[j].name == aRequiredField[i].getField || form.elements[j].name.indexOf(aRequiredField[i].getField.toString()) != -1)) {
                    strFieldValue = form.elements[j].value;
	                if (isBlank(strFieldValue)) {
                        fieldAlert(REQUIRED_MESSAGE, aRequiredField[i], form, j);
                        bValid = false;
                        // Present one error at a time.  Jump out of required fields loop.
                        i = aRequiredField.length;
                    }
	                // Found form field.  Jump out of form elements loop.
	                j = form.elements.length;
	            }
	        }
        }
	}
	return bValid;
}
	
/**
 * This function determines if a string contains all digits.
 */
 function isAllDigits(strValue) {
	var bAlldigits = false;
	var nLength = strValue.length;
	if (nLength > 0) {
		bAlldigits = true;
		while ((bAlldigits == true) && (nLength > 0)) {
			nLength = nLength - 1;
			if(!isDigit(strValue.charAt(nLength)))
				bAlldigits = false;
		}
	}
	return bAlldigits;
 }

/**
 * This function determines if a character is a digit
 */
function isDigit(c) {
	return (c >= '0' && c <= '9');
}

/**
 * This function determines if the field passed in is blank.
 */
function isBlank(strValue) {
    var bBlank = false;
    if ((strValue == null) || (strValue == "")) 
        bBlank = true;
    
    return bBlank;
}


/**
 * This function presents the user with an alert and sets focus
 * on the field that contains the error.  The section that the
 * field is contained in is made visible.
 * .
 */
function fieldAlert(strErrorMsg, aField, form, j) {
	// Provide the user with an error message.
    alert(aField.getFieldLabel + strErrorMsg);
    
    // Make sure section is expanded before setting focus.
    expandFormSection(aField.getSection);
    
    // Set focus to field in error.
    form.elements[j].focus();
}

/**
 * This function sets the form focus to the field that is specified.
 */
function setFieldFocus(form, strFieldFocus) {
    for (var j = 0; j < form.elements.length; j++) {
        if (form.elements[j].name == strFieldFocus) {
            form.elements[j].focus();
            j = form.elements.length;
        }
    }
}

/**
 * This function stops the onClick event from bubbling so that the FORM
 * section does not expand/collapse when the help icon is clicked.
 */
function onHelpClick() {
	if (window.event)
    	window.event.cancelBubble = true;
}

function ImageOn(imgDocID) {
    if (document.images)
		document[imgDocID].src = eval(imgDocID + 'on.src');
}

function ImageOff(imgDocID) {
    if (document.images)
		document[imgDocID].src = eval(imgDocID + 'off.src');
}

/**
 * This function selects or deselects all checkboxes on the form,
 * acording to the state of the special checkbox with id= checkSwitch
 * 
 */
function checkAll(form) {
  checkAll(form, null);
}

/**
 * This function selects or deselects all checkboxes on the form, matching the parameter strName
 * acording to the state of the special checkbox with id= checkSwitch
 * form the form to scan
 * strName the matching checkbox name.  Only checkboxes exactly matching this name will be modified.  Null implies all checkboxes.
 */
function checkAll(form, strName) {
	if (form.checkSwitch.checked == true) {
		form.checkSwitch.title = "Uncheck All";
		for (var i = 0; i < form.elements.length; i++) {
			if (form.elements[i].type == "checkbox" && (strName == null || form.elements[i].name == strName))
				form.elements[i].checked = true;
		}
	} else {
		form.checkSwitch.title = "Check All";
		for (var i = 0; i < form.elements.length; i++) {
	        	if (form.elements[i].type == "checkbox" && (strName == null || form.elements[i].name == strName))
				form.elements[i].checked = false;
		}
	}	
}

function disableButton(btnDisable) {
	var form = document.forms[0];

	// Prevent user from clicking the specified button multiple times.
	// Only disable if button can actually be located.
	if (document.getElementById(btnDisable) != null) {
		document.getElementById(btnDisable).disabled = true;
		
		// Let the user know that something is happening.
		if (document.getElementById("divInProgressMessage") != null)
			document.getElementById("divInProgressMessage").style.display = "inline";
	}
}