// ==UserScript==
// @name        GCHiddenText Redux
// @namespace      http://userscripts.org/users/201960
// @description Display "hidden text" or "HTML Comments".
// @include	    *.geocaching.com/geocache/*
// @version     3.0.0
// @downloadURL none
// ==/UserScript==


/*----------------------History---------------------------------------------------
/*----------------------V3---------------------------------------------------
v3.0.0 30/9/14
-Started a new life at Greasyfork.
-Removed the USO updater, as it was dead.
-The GeoKrety widget header change didn't make it live in V2.

/*----------------------V2---------------------------------------------------
v2.0.2 5/10/13
-Prevented the GeoKrety widget header being detected as hidden text.
v2.0.1 8/9/13
-Added updater.
-Changed back to Chuck's namespace.
v2.0.0 8/9/13
-The GC site had been changed so the include paths no longer worked.

/*----------------------V1---------------------------------------------------
v1.3 3/1/11
# fix: Sometimes the Show Hidden Text button would show when no hidden text was present, updated method of checking
# fix: Added to recongize new GC cache page address
v1.2 11/18/10
# new: Finds words, hex and rgb values in white text
# new: Changed to only highlight words and not the whole page
# fix: Updated code to be more sufficient/effective
v1.1.0 9/13/10
# new: Updated to catch white text if use style/font formatting
# fix: Updated error if no Short/Long Description is on the page
v1.0.0 9/10/10 *If you have previous version please uninstall before loading new version
# new:Added auto updater
# new: Updated to be able to show/hide hidden text
# new: updated section of code so user can easily change text/background colors to their preference
v0.0.1 9/7/10 
# new: Initial Release (Still testing a couple of options)
*/

//----------------------SET USER VALUES-------------------------------------------
// 			Use: color words: white, yellow, etc....
//				 HEX: #FF45FF ... etc...
//				or
//				 RGB:	rgb(255, 255, 255) ... etc....
//
var fgcolor = 'white';			//Forground color for hidden text
var bgcolor = 'red';			//Background color for hidden text
var cm_fgcolor = 'white';		//Foreground color for HTML Comments
var cm_bgcolor = 'green';		//Background color for HTML Comments
//
//----------------------END USER VALUES---------------------------------------

//Initialize Constants
var found = false;
var htmlshort=0, htmllong=0;

//Check for short or long descriptions
try{
htmlshort = document.getElementById('ctl00_ContentBody_ShortDescription').innerHTML;
}
catch(err){
}
try{
htmllong = document.getElementById('ctl00_ContentBody_LongDescription').innerHTML;
}
catch(err){
}
var html = htmlshort + htmllong;

/********Find Hidden Text*********/
//Find Styles Colors
allStyles = document.evaluate('//*[@style]', document, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
for(var i=0;i<allStyles.snapshotLength; i++){
	var CS = allStyles.snapshotItem(i).style.color.toLowerCase();
	// Prevent the GeoKrety widget header being detected as hidden text.
  if((CS == 'white' && allStyles.snapshotItem(i).innerHTML != "Krety") || CS == '#ffffff' || CS == 'rgb(255, 255, 255)'){
		found = true;
		//set style color values
		allStyles.snapshotItem(i).className = 'txt_hidden';
		allStyles.snapshotItem(i).style.color = fgcolor;
		allStyles.snapshotItem(i).style.backgroundColor = bgcolor;
		allStyles.snapshotItem(i).style.display = 'none';
	}
}
//Find Font Colors
allStyles = document.evaluate('//*[@color]', document, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
for(var i=0;i<allStyles.snapshotLength; i++){
	var CS = allStyles.snapshotItem(i).color.toLowerCase();
	if(CS == 'white' || CS == '#ffffff'){
		found = true;
		//remove font color value, to be replaced with style color
		allStyles.snapshotItem(i).removeAttribute('color');
		//set style color values
		allStyles.snapshotItem(i).className = 'txt_hidden';
		allStyles.snapshotItem(i).style.color = fgcolor;
		allStyles.snapshotItem(i).style.backgroundColor = bgcolor;
		allStyles.snapshotItem(i).style.display = 'none';
	}
}

/*********** Find Comments on Cache Description Page **********/
if(htmlshort){
	var shortdesc = document.evaluate("//span[@id='ctl00_ContentBody_ShortDescription']//comment()", document, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
	var cs_length = shortdesc.snapshotLength;
}
if(htmllong){
	var longdesc = document.evaluate("//span[@id='ctl00_ContentBody_LongDescription']//comment()", document, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
	var cl_length = longdesc.snapshotLength;
}
// 	Look for divs with style set to "visibility: hidden".
var hiddendesc = document.evaluate("//div[@style='visibility: hidden']", document, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
var hd_length = hiddendesc.snapshotLength;

//Create Elements for Comments
if(cs_length > 0 || cl_length > 0 || hd_length > 0){
	found = true;
	for (var i=0; i < cs_length; i++){
		var scs = document.createElement('span');
		scs.className = 'txt_hidden';
		scs.style.color = cm_fgcolor;
		scs.style.backgroundColor = cm_bgcolor;
		scs.style.display = 'none';
		scs.textContent = shortdesc.snapshotItem(i).data;
		shortdesc.snapshotItem(i).parentNode.insertBefore(scs, shortdesc.snapshotItem(i).nextSibling);
	}
	for (var i=0; i < cl_length; i++) {
		var lcs = document.createElement('span');
		lcs.className = 'txt_hidden';
		lcs.style.color = cm_fgcolor;
		lcs.style.backgroundColor = cm_bgcolor;
		lcs.style.display = 'none';
		lcs.textContent = longdesc.snapshotItem(i).data;
		longdesc.snapshotItem(i).parentNode.insertBefore(lcs, longdesc.snapshotItem(i).nextSibling);
	}
  // Hidden divs.
	for (var i=0; i < hd_length; i++) {
		var hcs = document.createElement('span');
		hcs.className = 'txt_hidden';
		hcs.style.color = fgcolor;
		hcs.style.backgroundColor = bgcolor;
		hcs.style.display = 'none';
		hcs.textContent = hiddendesc.snapshotItem(i).innerHTML;
		hiddendesc.snapshotItem(i).parentNode.insertBefore(hcs, hiddendesc.snapshotItem(i).nextSibling);
	}
}

//Add Found Hidden Text Button
if(found){
  var txt_count = document.getElementsByClassName('txt_hidden');
  function showtext(){
  	if(txt_count[0].style.display==''){
  		showbutton.value = "Show Hidden Text";
  		for(var i=0;i<txt_count.length;i++){
  			txt_count[i].style.display='none';
  		}
  	}else{
  		showbutton.value = "Hide Hidden Text";
  		for(var i=0;i<txt_count.length;i++){
  			txt_count[i].style.display='';
  		}
  	}
  }
	var showbutton = document.createElement('input');
	showbutton.id = "ctl00_ContentBody_btnShowHiddenText";
	showbutton.type = "submit";
	showbutton.value = "Show Hidden Text";
	showbutton.style.color = "red";
  // Bug fix: "Show" wraps to the next line.
  showbutton.style.paddingLeft = "5px";
  showbutton.style.paddingRight = "5px";
	showbutton.setAttribute('onclick', 'return false;');
	showbutton.addEventListener('click', showtext, false);
	//Insert Button
	var phonebutton = document.getElementById('ctl00_ContentBody_btnSendToPhone');
	phonebutton.parentNode.insertBefore(showbutton, phonebutton.nextSibling);
	//Insert Line inbetween buttons
	var textline = document.createElement('text');
	textline.textContent = " | ";
	phonebutton.parentNode.insertBefore(textline, phonebutton.nextSibling);
}