Printrun/web/js/asyncCommand.js

80 lines
2.2 KiB
JavaScript

function pronterfaceWebInterface_setup(){
pronterfaceWebInterface_attachAsync();
}
function pronterfaceWebInterface_attachAsync(){
var list = [];
if(document.getElementsByClassName){
list = document.getElementsByClassName('command');
}else if(document.getElementsByTagName){
list = document.getElementsByTagName('a');
list.concat( document.getElementsByTagName('area') );
//TODO filter list via checking the className attributes
}else{
console && console.error && console.error('unable to gather list of elements');
return false;
}
for(var i=0; i < list.length; i++){
list[i].addEventListener && list[i].addEventListener( 'click', function(e){return pronterfaceWebInterface_asyncCommand(null, e);}, true );
list[i].attachEvent && list[i].attachEvent( 'onclick', function(e){return pronterfaceWebInterface_asyncCommand(null, e);} );
}
return true;
}
function pronterfaceWebInterface_asyncCommand( urlOrElement, event ){
if( ! urlOrElement && event.target)
urlOrElement = event.target;
var url = null;
if( typeof urlOrElement == 'string' ){
url = urlOrElement;
}else{
url = urlOrElement&&urlOrElement.href;
}
if( typeof url != 'string' ){
console && console.error && console.error('url not a string', urlOrElement, url);
return true;
}
var httpRequest;
if (window.XMLHttpRequest) { // Mozilla, Safari, ...
httpRequest = new XMLHttpRequest();
} else if (window.ActiveXObject) { // IE 8 and older
httpRequest = new ActiveXObject("Microsoft.XMLHTTP");
}
if( ! httpRequest ){
alert('no AJAX available?');
// follow link
return true;
}
//onreadystatechange
//onerror
httpRequest.open( 'GET', url, true);
httpRequest.send(null);
// don't follow link
if( event ){
event.stopImmediatePropagation && event.stopImmediatePropagation();
event.defaultPrevented = true;
event.preventDefault && event.preventDefault();
}
return false;
}
if (document.addEventListener) {
document.addEventListener("DOMContentLoaded", pronterfaceWebInterface_setup, false);
} else if (document.attachEvent) {
document.attachEvent("onreadystatechange", pronterfaceWebInterface_setup);
} else {
document.onload = pronterfaceWebInterface_setup;
}