var button = this;
 
 
 
 
 
 
 
 
// ***** START OF USER PREFS ***** //
 
/* 
 
        MaxUndoPref Key:
                - If the button cannot retrieve the value of "browser.sessionstore.max_tabs_undo" it will set it to this variables value.
 
	MenuPref Key:
		0 = Do not show the right click menu at all when there are no recently closed tabs to restore.
		1 = Show right click menu regardless, if there are no recently closed tabs the menu will show "No previously closed tabs".
 
        button.TooltipPref: changes what is shown in the tooltip for tabs in the recently closed tabs list:
                0 = The tab's URL
                1 = The tab's title and URL
                2 = The tab's title
 
*/
 
 
var MaxUndoPref = 20;
var MenuPref = 1;
button.TooltipPref = 1;
 
var enabledimage = "data:image/x-icon;base64,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";
 
var disabledimage = "data:image/x-icon;base64,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";
 
// ***** END OF USER PREFS ***** // 
 
 
 
 
 
 
// ***** ICONS/IMAGES ***** //
 
var imgClear = "data:image/png;base64,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";
 
var imgAll = "data:image/png;base64,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";
 
 
 
 
// ***** VARS ***** //
 
var r_ss = Cc["@mozilla.org/browser/sessionstore;1"].getService(Ci.nsISessionStore);
 
 
 
 
// ***** POPULATES THE CONTEXT MENU WITH THE CLOSED TABS LIST ***** //
 
this.populateUndoMenu = function(aNode) {
 
    // remove existing menu items
    while (aNode.hasChildNodes())
      aNode.removeChild(aNode.firstChild);
 
    // get closed-tabs from nsSessionStore
    var ss = Cc["@mozilla.org/browser/sessionstore;1"].getService(Ci.nsISessionStore);
 
    // return if no restorable tabs
    if (ss.getClosedTabCount(window) == 0) {
      aNode.appendChild(document.createElement("menuitem"));
      aNode.firstChild.setAttribute("label", "No previously closed tabs");
      aNode.firstChild.setAttribute("disabled", "true");
      return;
    }
 
    // populate menu
    var undoItems = eval("(" + ss.getClosedTabData(window) + ")");
 
    for(var i = 0; i < undoItems.length; i++) {
      var m = aNode.appendChild(document.createElement("menuitem"));
      m.setAttribute("class", "menuitem-iconic bookmark-item");
      m.setAttribute("label", undoItems[i].title);
      m.setAttribute("value", i);
      var url = GetURL(undoItems[i]);
      if (button.TooltipPref == 0) {
        m.tooltipText = url;
      }
      else {
        if (button.TooltipPref == 1) {
          m.tooltipText = undoItems[i].title+" - "+url;
        }
        else {
          m.tooltipText = undoItems[i].title;
        }
      }
      m.setAttribute("oncommand", "undoCloseTab(" + i + ");");
      m.setAttribute("image", undoItems[i].image);
    }
 
    aNode.appendChild(document.createElement("menuseparator"));
 
    var mItem = aNode.appendChild(document.createElement("menuitem"));
    mItem.setAttribute("oncommand", "ClearClosedTabsHistory();");
    mItem.setAttribute("label", "Clear closed tabs history");
    mItem.setAttribute("image", imgClear);
 
    mItem = aNode.appendChild(document.createElement("menuitem"));
    mItem.setAttribute("oncommand", "OpenAll();");
    mItem.setAttribute("label", "Open all in tabs");
    mItem.setAttribute("image", imgAll);
 
}
 
 
 
 
// ***** FUNCTIONS ***** //
 
function ReloadIcon()
{
  if (r_ss.getClosedTabCount(window) == 0) {
    button.tooltipText = "No previously closed tabs";
    button.image = disabledimage;
  }
  else {
    button.tooltipText = "Undo close tab";
    button.image = enabledimage;
  }
}
 
ClearClosedTabsHistory = function()
{
    try {
      var maxUndo = gPrefService.getIntPref("browser.sessionstore.max_tabs_undo");
    } 
    catch(ex) {
      var maxUndo = MaxUndoPref;
      gPrefService.setIntPref("browser.sessionstore.max_tabs_undo", maxUndo);
    }
    //clear close tabs history
    gPrefService.setIntPref("browser.sessionstore.max_tabs_undo", 0);
 
    //restore maximum undo history pref
    gPrefService.setIntPref("browser.sessionstore.max_tabs_undo", maxUndo);
 
    ReloadIcon();
}
 
GetURL = function(aTabData)
{
  var history;
  history = aTabData.state;
  var activeIndex = (history.index || history.entries.length) - 1;
  return history.entries[activeIndex].url;
  history = aTabData.history;
  return history.getEntryAtIndex(history.index, false).URI.spec;
}
 
OpenAll = function()
{
    var undoItems = eval("(" + r_ss.getClosedTabCount(window) + ")");
    for(var i = 0; i < undoItems.length; i++) {
      undoCloseTab();
    }
}
 
 
 
 
// ***** ADDS THE MENU ITEMS TO THE CONTEXT MENU ***** //
 
const popupID = "cbContext-uctb";
var test = document.getElementById(popupID);
if(test) test.parentNode.removeChild(test);
var main = document.getElementById("mainPopupSet")
var pop = main.appendChild(document.createElement("popup"));
pop.id = popupID;
pop.setAttribute("onpopupshowing", "document.popupNode.populateUndoMenu(this)");
pop.setAttribute("oncommand", "event.stopPropagation()");
 
 
 
 
 
 
// ***** EXTRA SHOW POPUP FUNCTION ***** //
 
this.showPopup = function(node) {
  var popup = document.getElementById("cbContext-uctb");
  var x = node.boxObject.x;
  var y = node.boxObject.y + node.boxObject.height + 24;
  document.popupNode = node;
  popup.showPopup(node, x, y, "popup", null, null);
}
 
 
 
 
 
 
// ***** MOUSE/EVENT HANDLING ***** //
 
this.leftclick = function(evt) 
{
  if (r_ss.getClosedTabCount(window) > 0) {
    undoCloseTab();
  }
};
 
this.rightclick = function(evt) 
{
  if (r_ss.getClosedTabCount(window) > 0 || MenuPref == 1) {
    this.showPopup(this);
  }
};
 
this.midclick = function(evt)
{
  OpenAll();
};
 
function Closed(event)
{
  // Remove event listener
  window.removeEventListener("focus", ReloadIcon, true);
}
 
 
 
 
 
// ***** INITIALISATION ***** //
 
this.setAttribute("context", popupID);
this.setAttribute('onclick', 'custombuttons.gQuot.mHandler(event, this)'); // Calls the Global MouseClick handler gQuot
this.setAttribute('ondblclick', 'custombuttons.gQuot.mHandler(event, this)');
 
window.addEventListener("focus", ReloadIcon, true);
window.onclose = Closed;
 
 
 
 
 
 
// ***** ATTRIBUTES ***** //
 
this.setAttribute('author','Rawny, Makondo');
this.setAttribute('version','8');
this.setAttribute('homepage', 'http://custombuttons2.com/forum/buttons/buttons-database/undo-close-tab.html');
this.setAttribute('dependency','FF2.0*, FL1.0*, TB2.0*, CB2 2.0.5*');
this.setAttribute('status','Development');
this.setAttribute('public',true);