Bug 767900 - GCLI needs a command to enable execution of XUL Commands

xulcommand.js

Components.utils.import("resource:///modules/devtools/gcli.jsm");

gcli.addCommand({
  name: 'xulcommand',
  description: 'Run a XUL Command',
  params: [
    {
      name: 'command',
      type: {
        name: 'selection',
        lookup: function() {
          var items = [];
          var nodes = window.document.querySelectorAll('command');
          Array.prototype.forEach.call(nodes, function(command) {
            if (!command.disabled) {
              items.push({ name: command.id, value: command });
            }
          });
          items.sort(function(item1, item2) {
            return item1.name.localeCompare(item2.name);
          });
          return items;
        }
      },
      description: 'Command to run',
    }
  ],
  exec: function(args, context) {
    try {
      return args.command.doCommand();
    }
    catch (ex) {
      throw new Error("An error occurred executing " + args.command.id + " (" + ex + ")");
    }
  }
});