Watched folder functionality

And probably a better way... rather than rely on the Loaded event, this script registers a callback if a property changes. This way, the watched folder doesn't have to be displayed. This could be paired with a script to unregister (unwatch) folders as desired.

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#target bridge
if(BridgeTalk.appName == 'bridge'){
   try{
      var wfMenu = MenuElement.create('command', 'Watched Folder', 'at the end of Tools'); //create new menu command
      wfMenu.onSelect = function(){
         try{
            var sFolder = app.document.thumbnail; //current displayed folder
            if(! sFolder.container){ //make sure its a folder
               var wFolder = Folder.selectDialog('Select Watched Folder'); //dialog
               }
            else{
               var wFolder = Folder(sFolder.spec.fsName).selectDlg('Select Watched Folder'); //dialog start at currently displayed folder
               }
            if(wFolder == null){ //user cancel
               return;
               }
            }

         catch(e){
            alert(e + e.line + ' Unable to choose Watched Folder');

            return;
            }
         var tFolder = new Thumbnail(wFolder); //make thumbnail from folder
         var tChildren = tFolder.children; //get children array
         tFolder.registerInterest(interestCallback); //register interest
         function interestCallback (tFolder, tChildren){ //called when folder contents changes
         app.document.bringToFront(); //do stuff here
         }
      }
   }
   catch(e){
      alert(e + e.line);
      }
   }

Thanks for sharing your script! It's useful and an illustrative example of making a watched folder.

I should add, this only works if the watched folder is open in a Bridge browser window. The idea is that changes to that folder will invoke the event, even when Bridge is in the background.

On the Mac, its easy to define a watched folder with AppleScript or Automator and call Bridge. Windows doesn't have the same functionality.