UnityDocsCopyScript (GreaseMonkey)

UnityDocsCopyScript.js

// ==UserScript==
// @name        UnityDocsCopyScript
// @namespace   https://unitycoder.com
// @description Adds copy-button to unity Docs script examples > https://unitycoder.com/blog/2017/07/13/browser-plugin-add-copy-button-to-unity-scripting-docs/
// @include     https://docs.unity3d.com/ScriptReference/*
// @include     https://forum.unity3d.com/threads/*
// @include     https://forum.unity.com/threads/*
// @version     3
// @grant       none
// ==/UserScript==

// add buttons to scripting docs
CreateCopyButtons("codeExampleCS"); 

// add buttons to forum code tags
CreateCopyButtons("code"); 


// button creation
function CreateCopyButtons(className)
{
  var codeDivs = document.getElementsByClassName(className);
  for(var d=0;d<codeDivs.length;d++)
  {
    var btn = document.createElement("BUTTON");
    btn.innerHTML="&#x1f4cb;"; // unicode clipboard icon
    btn.id = "::xcopyButton"+d;
    btn.style.cssText = 'width:auto;height:26px;';
    btn.targetDiv = codeDivs[d];
    btn.addEventListener("click", CustomCopy);
    btn.onclick = function(e){
      CustomCopy(e);
      return false;
    };
    codeDivs[d].parentNode.insertBefore(btn, codeDivs[d].parentNode.childNodes[0]);
  }
}

// https://stackoverflow.com/a/30810322/5452781
function CustomCopy(e) 
{
  CustomSelectElementContents(e.target.targetDiv);
  try 
  {
    var successful = document.execCommand('copy');
    var msg = successful ? 'successful' : 'unsuccessful';
    console.log('Copying text command was ' + msg);
  } catch (err) {
    console.log('Oops, unable to copy');
  }
  return false; 
}

// https://stackoverflow.com/a/8024509/5452781
function CustomSelectElementContents(el) {
    if (window.getSelection && document.createRange) {
        // IE 9 and non-IE
        var range = document.createRange();
        range.selectNodeContents(el);
        var sel = window.getSelection();
        sel.removeAllRanges();
        sel.addRange(range);
    } else if (document.body.createTextRange) {
        // IE < 9
        var textRange = document.body.createTextRange();
        textRange.moveToElementText(el);
        textRange.select();
    }
}

UnityDocsCopyScript4.js

// ==UserScript==
// @name        UnityDocsCopyScript
// @namespace   https://unitycoder.com
// @description Adds copy-button to unity Docs script examples > https://unitycoder.com/blog/2017/07/13/browser-plugin-add-copy-button-to-unity-scripting-docs/
// @include     https://docs.unity3d.com/ScriptReference/*
// @include     https://forum.unity3d.com/threads/*
// @include     https://forum.unity.com/threads/*
// @include     https://forum.unity.com/conversations/*
// @version     4
// @grant       none
// ==/UserScript==

var addUrl=true; // adds current page url into clipboard text beginning

// add buttons to scripting docs
CreateCopyButtons("codeExampleCS"); 

// add buttons to forum code tags
CreateCopyButtons("code"); 


// button creation
function CreateCopyButtons(className)
{
  var codeDivs = document.getElementsByClassName(className);
  for(var d=0;d<codeDivs.length;d++)
  {
    var btn = document.createElement("BUTTON");
    btn.innerHTML="&#x1f4cb;"; // unicode clipboard icon
    btn.id = "::xcopyButton"+d;
    btn.style.cssText = 'width:auto;height:26px;';
    btn.targetDiv = codeDivs[d];
    //btn.addEventListener("click", CustomCopy);
    btn.setAttribute('type', 'button'); // disables Post behaviour from button
    btn.onclick = function(e)
    {
      //CustomCopy(e); // old
      CustomCopy2(e);
      return false;
    };
    codeDivs[d].parentNode.insertBefore(btn, codeDivs[d].parentNode.childNodes[0]);
  }
}

// new clipboard method, with trim
function CustomCopy2(e)
{
 	if (window.getSelection && document.createRange) 
	{
		var range = document.createRange();
		range.selectNodeContents(e.target.targetDiv);
		var sel = window.getSelection();
    sel.removeAllRanges();
    sel.addRange(range);
    // trim leading/trailing spaces from copied string
    var src = sel.anchorNode.innerText.trim();
    // if should include url
    if (addUrl) src = "// "+window.location.href+"\n"+src;
    // manually set clipboard data
		navigator.clipboard.writeText(src);
	}
}

// https://stackoverflow.com/a/30810322/5452781
function CustomCopy(e) 
{
  CustomSelectElementContents(e.target.targetDiv);
  try 
  {
    var successful = document.execCommand('copy');
    var msg = successful ? 'successful' : 'unsuccessful';
    console.log('[UnityCopyCodeHelper] Copying text command was ' + msg);
  } catch (err) {
    console.log('[UnityCopyCodeHelper] Oops, unable to copy');
  }
  return false; 
}

// https://stackoverflow.com/a/8024509/5452781
function CustomSelectElementContents(el) 
{
	if (window.getSelection && document.createRange) 
	{
		// IE 9 and non-IE
		var range = document.createRange();
		range.selectNodeContents(el);
		//var sel = window.getSelection().anchorNode.data.trim();
		var sel = window.getSelection();
    sel.removeAllRanges();
    sel.addRange(range);
    // TODO trim copied string!
    //console.log(sel.toString());
	  //console.log(sel.anchorNode.innerText);
    //window.getSelection().anchorNode.data.replace(/some pattern/, 'replace value');
    
	} else if (document.body.createTextRange) {
    // IE < 9
    var textRange = document.body.createTextRange();
    textRange.moveToElementText(el);
    textRange.select();
	}
}