Google Drive Javascript API: Detect drive changes - return changes only -


i try detect changes on users drive update contents in list when request changes receive entries on drive.

to explain why want this: handy feature when user has 2 tabs opened, 1 google drive environment , 1 application uses drive (doesn't need reload app see content changes made in drive environment).

i'm following guide listed here: https://developers.google.com/drive/v2/reference/changes/list

a strange thing need largestchangeid+1, how know value? not know largestchangeid , set null. no matter i'm doing value content.

i made following code:

o.getcloudfileupdates = function(fcallback, sfolderid ) {   var odefq = {q:'trashed=false '+(typeof sfolderid == 'string'?('and "'+sfolderid+'" in parents'):''), largestchangeid:null, orderby:'title', maxresults:1000},             fgetfiles = function(request, result)        {         request.execute(function(resp)          {             //$d(resp);              if( resp.items instanceof array )                {               result = result.concat(resp.items);               if( resp.nextpagetoken )                { // next page , 'break' function                   return fgetfiles(gapi.client.drive.changes.list($j.extend(odefq,{'pagetoken':resp.nextpagetoken})), result);                }              }              if( result.length )             {               result.sort(function(a,b)                {                 if (a.title < b.title)                  { return -1; }                 if (a.title > b.title)                  { return 1; }                 return 0;               });                fcallback(result);               return;             }             fcallback(false);         });       };    try {     fgetfiles(gapi.client.drive.changes.list(odefq), []);   } catch(e) { fcallback(false); return false; }   return true; };

how latest changes whithout knowing largestchangeid?

start 0 on first call. within response current largest change id, need store , use on next request. in code, materialise "resp.largestchangeid".


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