Preserve chat and cursor channel when importing a template

www/common/common-ui-elements.js

@@ -1916,7 +1916,13 @@ define([
                 onSelect: function (data) {
                     if (data.type === type && first) {
                         UI.addLoadingScreen({hideTips: true});
-                        sframeChan.query('Q_TEMPLATE_USE', data.href, function () {
+                        var chatChan = common.getPadChat();
+                        var cursorChan = common.getCursorChannel();
+                        sframeChan.query('Q_TEMPLATE_USE', {
+                            href: data.href,
+                            chat: chatChan,
+                            cursor: cursorChan
+                        }, function () {
                             first = false;
                             UI.removeLoadingScreen();
                             Feedback.send('TEMPLATE_USED');

www/common/cryptpad-common.js

@@ -493,9 +493,10 @@ define([
         });
     };
 
-    common.useTemplate = function (href, Crypt, cb, optsPut) {
+    common.useTemplate = function (data, Crypt, cb, optsPut) {
         // opts is used to overrides options for chainpad-netflux in cryptput
         // it allows us to add owners and expiration time if it is a new file
+        var href = data.href;
 
         var parsed = Hash.parsePadUrl(href);
         var parsed2 = Hash.parsePadUrl(window.location.href);
@@ -531,8 +532,13 @@ define([
                     }
                     if (typeof(meta) === "object") {
                         meta.defaultTitle = meta.title || meta.defaultTitle;
-                        delete meta.users;
                         meta.title = "";
+                        delete meta.users;
+                        delete meta.chat2;
+                        delete meta.chat;
+                        delete meta.cursor;
+                        if (data.chat) { meta.chat2 = data.chat; }
+                        if (data.cursor) { meta.cursor = data.cursor; }
                     }
                     val = JSON.stringify(parsed);
                 } catch (e) {

www/common/sframe-common-outer.js

@@ -647,8 +647,8 @@ define([
                 initFilePicker(data);
             });
 
-            sframeChan.on('Q_TEMPLATE_USE', function (href, cb) {
+            sframeChan.on('Q_TEMPLATE_USE', function (data, cb) {
-                Cryptpad.useTemplate(href, Cryptget, cb);
+                Cryptpad.useTemplate(data, Cryptget, cb);
             });
             sframeChan.on('Q_TEMPLATE_EXIST', function (type, cb) {
                 Cryptpad.listTemplates(type, function (err, templates) {
@@ -953,7 +953,9 @@ define([
                         // we need to have the owners and expiration time in the first line on the
                         // server
                         var cryptputCfg = $.extend(true, {}, rtConfig, {password: password});
-                        Cryptpad.useTemplate(data.template, Cryptget, function () {
+                        Cryptpad.useTemplate({
+                            href: data.template
+                        }, Cryptget, function () {
                             startRealtime();
                             cb();
                         }, cryptputCfg);

www/common/sframe-common.js

@@ -168,12 +168,15 @@ define([
 
     // Chat
     var padChatChannel;
+    // common-ui-elements needs to be able to get the chat channel to put it in metadata when
+    // importing a template
     funcs.getPadChat = function () {
         return padChatChannel;
     };
     funcs.openPadChat = function (saveChanges) {
         var md = JSON.parse(JSON.stringify(ctx.metadataMgr.getMetadata()));
         //if (md.chat) { delete md.chat; } // Old channel without signing key
+        // NOTE: "chat2" is also used in cryptpad-common's "useTemplate"
         var channel = md.chat2 || Hash.createChannelId();
         if (!md.chat2) {
             md.chat2 = channel;
@@ -187,6 +190,8 @@ define([
     };
 
     var cursorChannel;
+    // common-ui-elements needs to be able to get the cursor channel to put it in metadata when
+    // importing a template
     funcs.getCursorChannel = function () {
         return cursorChannel;
     };