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// form.js
if (!window.debugOn) { debugOn=false; }
//debugOn = 1;
// controlCheck(objId)
// Check the checkbox or first radio.
function controlCheck(objId) {
if (debugOn) alert('controlCheck('+objId+")");
obj = document.getElementById(objId); // Get object.
formId = document.getElementById(objId).form.name; // Get form Id.
if (obj.type != 'radio') {
document[formId][objId].checked = false;
} else {
objLen = document[formId][objId].length;
document[formId][objId][0].checked = false; // Check the first radio.
}
}
// checkboxGetValue(objId)
// Get the checkbox value.
function checkboxGetValue(objId) {
if (debugOn) alert('checkboxGetValue('+objId+")");
obj = document.getElementById(objId); // Get object.
formId = document.getElementById(objId).form.name; // Get form Id.
if (obj.type != 'radio') {
checkboxValue = document[formId][objId].checked;
} else {
objLen = document[formId][objId].length;
checkboxValue = document[formId][objId][0].checked;
}
if (debugOn) alert('checkboxValue=['+checkboxValue+"]");
return checkboxValue;
}
// controlUncheck(objId)
// Uncheck the checkbox or first radio.
function controlUncheck(objId) {
if (debugOn) alert('controlUncheck('+objId+")");
obj = document.getElementById(objId); // Get object.
formId = document.getElementById(objId).form.name; // Get form Id.
if (obj.type != 'radio') {
document[formId][objId].checked = false;
} else {
objLen = document[formId][objId].length;
for(var i = 0; i < objLen; i++) {
document[formId][objId][i].checked = false; // Uncheck the first radio.
}
}
}
// elementDisable(objId)
// Disable the form element.
function elementDisable(objId) {
//if (debugOn) alert('elementDisable('+objId+")");
obj = document.getElementById(objId); // Get object.
if (obj != null) {
formId = document.getElementById(objId).form.name; // Get form Id.
objLen = document[formId][objId].length;
if (obj.type != 'radio') {
document[formId][objId].disabled = true;
} else {
for(var i = 0; i < objLen; i++) {
document[formId][objId][i].disabled = true;
}
}
} else {
alert('elementDisable('+objId+") obj="+obj);
}
}
// elementEnable(objId)
// Enable the form element.
function elementEnable(objId) {
if (debugOn) alert('elementEnable('+objId+")");
obj = document.getElementById(objId); // Get object.
formId = document.getElementById(objId).form.name; // Get form Id.
objLen = document[formId][objId].length;
if (obj.type != 'radio') {
document[formId][objId].disabled = false;
} else {
for(var i = 0; i < objLen; i++) {
document[formId][objId][i].disabled = false;
}
}
}
// elementHide(objId)
// Hide the form element.
function elementHide(objId) {
if (debugOn) alert('elementHide('+objId+")");
obj = document.getElementById(objId); // Get object.
formId = document.getElementById(objId).form.name; // Get form Id.
objLen = document[formId][objId].length;
if (obj.type != 'radio') {
document[formId][objId].style.visibility = "hidden";
} else {
for(var i = 0; i < objLen; i++) {
document[formId][objId][i].style.visibility = "hidden";
}
}
}
// elementShow(objId)
// Show the form element.
function elementShow(objId) {
if (debugOn) alert('elementShow('+objId+")");
obj = document.getElementById(objId); // Get object.
formId = document.getElementById(objId).form.name; // Get form Id.
objLen = document[formId][objId].length;
if (obj.type != 'radio') {
document[formId][objId].style.visibility = "visible";
} else {
for(var i = 0; i < objLen; i++) {
document[formId][objId][i].style.visibility = "visible";
}
}
}
// radioGetValue(objId)
// Returns the value of the radio button that is checked.
// Returns empty string if no buttons selected or radio control does not exist.
function radioGetValue(objId) {
if (debugOn) alert('radioGetValue('+objId+")");
if ( document.getElementById(objId) ) {
obj = document.getElementById(objId); // Get radio object.
formId = document.getElementById(objId).form.name; // Get form name.
objLen = document[formId][objId].length;
for(var i = 0; i < objLen; i++) {
if(document[formId][objId][i].checked) {
return document[formId][objId][i].value;
}
}
} else {
console.warn('radioGetValue '+objId+' is undefined.');
}
return "";
}
// radioSetValue(objId, newValue)
// Sets the radio button with the given value as being checked.
// Does nothing if there are no radio buttons.
// If the given value does not exist, all the radio buttons are reset to unchecked.
function radioSetValue(objId, newValue) {
if (debugOn) alert('radioSetValue('+objId+","+newValue+")");
console.log('radioSetValue('+objId+","+newValue+")");
if ( document.getElementById(objId) ) {
obj = document.getElementById(objId); // Get radio object.
formId = document.getElementById(objId).form.name; // Get form name.
objLen = document[formId][objId].length;
for(var i = 0; i < objLen; i++) {
document[formId][objId][i].checked = false;
if(document[formId][objId][i].value == newValue.toString()) {
document[formId][objId][i].checked = true;
}
}
} else {
console.warn('radioSetValue '+objId+' is undefined.');
}
}
function getElementValue(formElement) {
//alert('formElement='+formElement);
obj = document.getElementById(formElement); // Get object.
if (obj) {
if(obj.length != null) var type = obj[0].type;
if((typeof(type) == 'undefined') || (type == 0)) var type = obj.type;
//alert('0bj='+obj+' type='+type);
switch(type) {
case 'undefined': return;
case 'radio':
for(var x=0; x < obj.length; x++)
if(obj[x].checked == true)
return obj[x].value;
case 'select-multiple':
var myArray = new Array();
for(var x=0; x < obj.length; x++)
if(obj[x].selected == true)
myArray[myArray.length] = obj[x].value;
return myArray;
case 'checkbox': return obj.checked;
default: return obj.value;
}
} else {
alert(obj+' undefined');
}
}
// TextareaResizeAll(maxWidth)
// Resizes all textareas on the page
// maxWidth = The maximum textarea width.
function TextareaResizeAll(maxWidth, minWidth, minHeight) {
console.log(`${PC}TextareaResizeAll[maxWidth=${maxWidth}, minWidth=${minWidth}, minHeight=${minHeight}]`,CG);
if ( minWidth == undefined ) minWidth = 20; // The textarea's minimum width.
if ( minHeight == undefined ) minHeight = 2; // The textarea's minimum height.
var textareas = document.getElementsByTagName("textarea"); // Get an array of textareas.
console.log('textareas.length = '+textareas.length);
for ( $i=0; $i<textareas.length; $i++ ) { // Loop through the textareas.
TextareaResizeById(textareas[$i],maxWidth,minWidth,minHeight) // Resize this textarea.
}
}
// TextareaResizeById(eId, maxWidth)
// Called by TextareaResizeAll() to resize this textarea.
function TextareaResizeById(eId, maxWidth, minWidth, minHeight) {
console.log(`${PC}TextareaResizeById[eId=${eId.name}, maxWidth=${maxWidth}, minWidth=${minWidth}, minHeight=${minHeight}]`,CG);
if ( minWidth == undefined ) minWidth = 20; // The textarea's minimum width.
if ( minHeight == undefined ) minHeight = 2; // The textarea's minimum height.
var width = 0; // Used to calculate the textarea's current width.
var height = -1; // Used to calculate the textarea's current height.
lines = eId.value.split('\n'); // Get an array of the textarea's lines.
//alert('name='+eId.name+' value='+eId.value);
for (var i = 0; i < lines.length; i++) { // Loop through each line.
var linelength = lines[i].length; // Get the line length.
if ( linelength > width ) width = linelength; // Increase width if needed.
height++; // Increment height.
}
height += 2;
console.log('width = '+width+', height = '+height);
if ( width > maxWidth ) { width = maxWidth; height++; console.log('width = '+width+', height = '+height); } // If width too large reset it and increment height.
if ( width < minWidth ) { width = minWidth; console.log('width = '+width); } // If width too small set to minWidth.
if ( height < minHeight ) { height = minHeight; console.log('height = '+height); } // If height too small set to minHeight.
if ( width > 0 ) { eId.cols = parseInt(width); console.log('eId.cols = '+eId.cols); } // Set the textarea's width.
if ( height > 0 ) { eId.rows = parseInt(height); console.log('eId.rows = '+eId.rows); } // Set the textarea's height.
}