Fix drive download issues with OnlyOffice documents

www/common/onlyoffice/inner.js

@@ -1804,6 +1804,7 @@ define([
                         }
 
                         if (APP.isDownload) {
+                            delete APP.isDownload;
                             var bin = getContent();
                             if (!supportsXLSX()) {
                                 return void sframeChan.event('EV_OOIFRAME_DONE', bin, {raw: true});
@@ -2008,6 +2009,7 @@ Uncaught TypeError: Cannot read property 'calculatedType' of null
 
                 var blobUrl = (typeof mediasData[data.src] === 'undefined') ? "" : mediasData[data.src].blobUrl;
                 if (blobUrl) {
+                    delete downloadImages[name];
                     debug("CryptPad Image already loaded " + blobUrl);
                     return void callback(blobUrl);
                 }
@@ -2556,7 +2558,7 @@ Uncaught TypeError: Cannot read property 'calculatedType' of null
                 type:'text/javascript',
                 src: '/common/onlyoffice/'+version+'web-apps/apps/api/documents/api.js'
             });
-            $('#cp-app-oo-editor').append(s);
+            $('#cp-app-oo-editor').empty().append(h('div#cp-app-oo-placeholder-a')).append(s);
 
             var hashes = content.hashes || {};
             var idx = sortCpIndex(hashes);

www/common/onlyoffice/ooiframe.js

@@ -15,15 +15,17 @@ define([
     var create = function (config) {
         // Loaded in load #2
         var sframeChan;
+        var Util = config.modules.Utils.Util;
+        var _onReadyEvt = Util.mkEvent(true);
         var refresh = function (data, cb) {
             if (currentCb) {
                 queue.push({data: data, cb: cb});
                 return;
             }
             if (!ready) {
-                ready = function () {
+                _onReadyEvt.reg(function () {
                     refresh(data, cb);
-                };
+                });
                 return;
             }
             currentCb = cb;
@@ -152,10 +154,8 @@ define([
 
                 sframeChan.onReady(function () {
                     if (ready === true) { return; }
-                    if (typeof ready === "function") {
-                        ready();
-                    }
                     ready = true;
+                    _onReadyEvt.fire();
                 });
             });
         });