/*
Link with
Commons Javascript functions that will:
Check if the browser is Internet Explorer
isIE(): returns boolean
Check if the browser is Opera
isOpera(): returns boolean
Get the parent form of any element, really cool to use with this
getParentForm(AnyElement): returns form node
Restricts keys that can entered in a text field, best if used with onKeyPress
restrictKeys(theTextField, allAllowedKeysString, alertMessageString):void
theTextField: the text field that this will work with, with onKeyPress just use this
allAllowedKeysString: just the allowed characters, for numbers you would use "0123456789", for y or n use "yn"
alertMessageString: when the user trys to enter in an invalid key a message will be displayed of this string
no message displays when this is null.
Print specific content on your page
openPrintWindow(contentString):void
contentString: just the string that will be printed, can be Html, to print all contents of a tag use node.innerHTML
Get all elements by class name
getElementsByClassName(classNameString):returns array of nodes
Trim a string
trim(string):void
Trim all fields of a form
trimValues(aForm):void
aForm: the form node to trim all the values of
Perform validation on a form, this works by having an additional attribute on a field called invalidMessage, which sets the
invalid message and marks the field as required for this validation, NOTE: only validates the first form although this is easily
changed
validateForm():returns true if validates
Perfom validation on a form, same as above except now finds the corresponding label and highlights it
validateFormWithLabels(theForm, labelColor, highlightColor)
Get a list of the fields for a form
getAllFormFields(aForm):returns array of fields
Disable or enable a control through a toggle (toggle means if it's disabled then the method will enable it and vice-versa)
toggleDisableControl(stringId):void
stringId: the id of the element
Disable All fields for a given form
disableAllFormFields(aForm):void
aForm: the form node that contains the controls to be disabled
Resize textarea to fit all text
resizeTextAreaToShowAllText
textarea: the textarea to resize
*/
//Switch on/off DEBUG mode
var DEBUG = false;
function debug(thing){if(DEBUG == true){alert(thing);}}
//debug("Debug Mode is on");
//Check if browser is Internet Explorer
function isIE(){
var detect = navigator.userAgent.toLowerCase();
return detect.indexOf("ie") + 1;
}
//Check if browser is Opera
function isOpera(){
return (window.opera)
}
//Get the parent form of the object theObject, if no parent form is found returns null
function getParentForm(theObject){
var theForm = document.getElementsByTagName("form");
for(x=0; x < theForm.length; x++)
{
var formCollection = theForm[x].getElementsByTagName(theObject.nodeName);
for(i=0; i < formCollection.length; i++)
{
if (formCollection[i] == theObject)
{
return theForm[x]
}
}
}
return null;
}
//Restrict Keys for the field:theObject,
function restrictKeys(e, validKeys, message){
var strWork = new String(validKeys);
strMsg = '';
isValidCharacter = false;
var theElement = isIE() ? e.srcElement : e.currentTarget;
var theKeyCode = (isIE() || isOpera()) ? e.keyCode : e.charCode;
for(i=0;i < strWork.length;i++){
if(theKeyCode == strWork.charCodeAt(i) || theKeyCode == 0)
{
isValidCharacter = true;
break;
}
}
//alert(e.charCode)
if(!isValidCharacter){
if(message == null || message.length == 0){}
else{alert(message)};
if(isIE()){
e.returnValue = false
}
else{e.preventDefault();}
theElement.focus();
}
}
//Open page to print string: content
function openPrintWindow(content){
var win1 = window.open('', 'PrintPage','width=25,height=25');
win1.document.open();
win1.document.write('Print View');
win1.document.write(''+content+'');
win1.document.close();
}
//Get elements by class name string classname
function getElementsByClassName(classname)
{
var a = [];
var re = new RegExp('\\b' + classname + '\\b');
var els = document.getElementsByTagName("*");
for(var i=0,j=els.length; i= textarea.cols) b+= Math.floor(a[x].length/textarea.cols);
}
b+= a.length;
if (b > textarea.rows) textarea.rows = b;
}
//Expand all textareas in a form
function resizeAllTextAreasToShowAllText(theForm){
var textFields = theForm.getElementsByTagName("textarea");
for(x=0; x < textFields.length; x++){
resizeTextAreaToShowAllText(textFields[x]);
x++
}
}