MSFmultiSelect.js
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/* MSFmultiSelect v1.00
* Developed by Jagadeesan S
* jagadeesanjd11@gamil.coms
* https://minisuperfiles.blogspot.com
*/
class MSFmultiSelect{
constructor(select, settings={}) {
this.select = select;
this.settings = settings;
this.defultSettings={
width:350,
height:30,
appendTo:'body',
className:''
}
this.select.multiple=true;
this.select.style.display='none';
this.create();
}
create(){
var div=document.createElement('DIV');
div.className='msf_multiselect_container';
this.id='msf_multiselect_'+(document.querySelectorAll('.msf_multiselect_container').length+1);
div.id=this.id;
var ul=document.createElement('UL');
ul.className='msf_multiselect';
var textarea=document.createElement('textarea'); textarea.readOnly=true;
textarea.style.height=(this.settings.height) ? this.settings.height+'px' : this.defultSettings.height+'px';
textarea.style.width=(this.settings.width) ? this.settings.width+'px' : this.defultSettings.width+'px';
textarea.className=(this.settings.className) ? this.settings.className : this.defultSettings.className;
var self=this,display="";
if(this.settings.selectAll){
var label=document.createElement('label');
var li=document.createElement('LI');
var input=document.createElement('input');
input.type='checkbox';
input.disabled=(this.settings.readOnly) ? true: false;
input.addEventListener('click',function(){
this.parentElement.className=(this.checked) ? 'active' : '';
self.selectAll(this.checked);
});
var caption=document.createTextNode('<Select all>');
li.appendChild(input);
li.appendChild(caption);
label.appendChild(li);
ul.appendChild(label);
}
for(var i=0,len=this.select.children.length; i<len; i++){
var label=document.createElement('label');
var li=document.createElement('LI');
var input=document.createElement('input');
input.type='checkbox';
input.disabled=(this.settings.readOnly) ? true: false;
input.value=this.select.children[i].value;
var caption=document.createTextNode(this.select.children[i].innerText);
input.addEventListener('click',function(){
if(this.checked){
self.setValue([this.value]);
}else{
self.removeValue([this.value]);
}
if(typeof self.settings.onChange=='function'){
self.settings.onChange(this.checked,this.value,self);
}
});
li.appendChild(input);
li.appendChild(caption);
if(this.select.children[i].selected){
li.className='active';
input.checked=true;
display+=(display) ? ", "+this.select.children[i].innerText : this.select.children[i].innerText;
}else{
li.className='';
input.checked=false;
}
label.appendChild(li);
ul.appendChild(label);
}
textarea.value=display;
this.logger=textarea;
div.appendChild(textarea);
var addTarget;
if(this.settings.appendTo){
addTarget=document.querySelector(this.settings.appendTo);
}else{
addTarget=document.querySelector(this.defultSettings.appendTo);
}
//set width
ul.style.width=(this.settings.width) ? this.settings.width+2+'px' : this.defultSettings.width+2+'px';
ul.style.display='none';
div.appendChild(ul);
this.list=ul;
this.container=div;
addTarget.appendChild(div);
// add event
document.addEventListener('click',function(event){
var isClickInside=self.container.contains(event.target);
if(!isClickInside){
self.list.style.display='none';
}
});
this.logger.addEventListener('click',function(){
if(self.list.style.display=='none'){
self.list.style.display='';
}else{
self.list.style.display='none';
}
});
}
setValue(selected=[]){
if(selected.length){
for(var i=0; i<this.select.children.length; i++){
for(var j=0; j<selected.length; j++){
if(this.select.children[i].value==selected[j]){
this.select.children[i].selected=true;
var sync=(this.settings.selectAll) ? (i+1) : i;
this.list.children[sync].children[0].children[0].checked=true;
this.list.children[sync].children[0].className='active'; //need to change;
break;
}
}
}
this.log();
}
}
removeValue(selected=[]){
if(selected.length){
for(var i=0; i<this.select.children.length; i++){
for(var j=0; j<selected.length; j++){
if(this.select.children[i].value==selected[j]){
this.select.children[i].selected=false;
var sync=(this.settings.selectAll) ? (i+1) : i;
this.list.children[sync].children[0].children[0].checked=false;
this.list.children[sync].children[0].className=''; //need to change;
break;
}
}
}
this.log();
}
}
log(){
var display="";
for(var i=0; i<this.select.children.length; i++){
if(this.select.children[i].selected){
display+=(display) ? ", "+this.select.children[i].innerText : this.select.children[i].innerText;
}
}
this.logger.value=display;
}
getData(){
var data=[];
for(var i=0; i<this.select.children.length; i++){
if(this.select.children[i].selected){
data.push(this.select.children[i].value);
}
}
return data;
}
selectAll(is=false){
var data=[];
for(var i=0; i<this.select.children.length; i++){
data.push(this.select.children[i].value);
}
if(is){
this.setValue(data);
}else{
this.removeValue(data);
}
}
loadSource(data=[]){
if(data.length!=0){
this.select.innerHTML='';
for(var i=0; i<data.length; i++){
var option=document.createElement('OPTION');
option.value=data[i].value;
option.innerHTML=data[i].caption;
option.selected=data[i].selected;
this.select.appendChild(option);
}
this.reload();
}
}
getSource(){
var data=[];
for(var i=0; i<this.select.children.length; i++){
data.push({value:this.select.children[i].value,caption:this.select.children[i].innerText,selected:this.select.children[i].selected});
}
return data;
}
reload(){
this.container.remove();
this.create();
}
}