function makeCopyButton(idTarget,bFlipped,cchLength){
var elButton = document.createElement("button");
elButton.className = "copy-button";
if( bFlipped ) elButton.className += " copy-button-flipped";
elButton.id = "copy-" + idTarget;
initCopyButton(elButton,idTarget,cchLength);
return elButton;
}
function initCopyButtonById(idButton,idTarget,cchLength){
idButton = idButton || "copy-" + idTarget;
var elButton = document.getElementById(idButton);
if( elButton ) initCopyButton(elButton,idTarget,cchLength);
return elButton;
}
function initCopyButton(elButton,idTarget,cchLength){
if( idTarget ) elButton.setAttribute("data-copytarget",idTarget);
if( cchLength ) elButton.setAttribute("data-copylength",cchLength);
elButton.onclick = clickCopyButton;
if( elButton.childElementCount!=1 || elButton.firstChild.tagName!="SPAN" ){
while( elButton.firstChild ) elButton.removeChild(elButton.lastChild);
elButton.appendChild(document.createElement("span"));
}
return elButton;
}
setTimeout(function(){
var elButtons = document.getElementsByClassName("copy-button");
for ( var i=0; i<elButtons.length; i++ ){
initCopyButton(elButtons[i],0,0);
}
},1);
function clickCopyButton(e){
e.preventDefault();
e.stopPropagation();
if( this.disabled ) return;
var idTarget = this.getAttribute("data-copytarget");
var elTarget = document.getElementById(idTarget);
if( elTarget ){
var text = elTarget.innerText.replace(/^\s+|\s+$/g,"");
var cchLength = parseInt(this.getAttribute("data-copylength"));
if( !isNaN(cchLength) && cchLength>0 ){
text = text.slice(0,cchLength);
}
copyTextToClipboard(text);
}
}
function copyTextToClipboard(text){
if( window.clipboardData && window.clipboardData.setData ){
window.clipboardData.setData("Text",text);
}else{
var elTextarea = document.createElement("textarea");
elTextarea.style.position = "fixed";
elTextarea.value = text;
document.body.appendChild(elTextarea);
elTextarea.select();
try{
document.execCommand("copy");
}catch(err){
}finally{
document.body.removeChild(elTextarea);
}
}
}