Expand All, Collapse All for TFS Web Portal

gistfile1.js

window.tfs_toggle = null;
(function(){
  alert('initing toggle');
  var expanded = false;
  // Support TFS Web Portal Work Item query expand/collapse all functionality
  var toggle = function(){    
    var collapse = function(){
      $('.tswa-qrgminus').each(function(){ $(this).trigger("click"); });    
    },
    expand = function(){
      $('.tswa-qrgplus').each(function(){ $(this).trigger("click"); });
    };  
    
    // Based on bool, expand or collapse
    if(expanded){
      collapse();
      window.setTimeout(function(){ collapse(); }, 1);
    }
    else{
      expand();
      window.setTimeout(function(){ expand(); }, 1);
    }
    // Toggle our bool
    expanded = !expanded;
  };
  
  toggle();
  
  window.tfs_toggle = toggle;
  alert('toggle initialized');
})();