Fix bugs when anonymous uses member-only shortcuts

app/assets/javascripts/favorite_groups.js

@@ -20,6 +20,10 @@
     });
 
     var open_favgroup_dialog = function(e) {
+      if (Danbooru.meta("current-user-id") == "") { // anonymous
+        return;
+      }
+
       if ($(".add-to-favgroup").length === 1) {
         // If the user only has one favorite group we don't need to ask which group to add the post to.
         $(".add-to-favgroup").click();

app/assets/javascripts/notes.js

@@ -560,6 +560,11 @@ Danbooru.Note = {
     start: function(e) {
       e.preventDefault();
 
+      if (Danbooru.meta("current-user-id") == "") {
+        Danbooru.notice("You must be logged in to edit notes");
+        return;
+      }
+
       if (Danbooru.Note.TranslationMode.active) {
         return;
       }

app/assets/javascripts/posts.js

@@ -189,7 +189,11 @@
         if ($("#add-to-favorites").is(":visible")) {
           $("#add-to-favorites").click();
         } else {
-          Danbooru.notice("You have already favorited this post")
+          if (Danbooru.meta("current-user-id") == "") {
+            Danbooru.notice("You must be logged in to favorite posts");
+          } else {
+            Danbooru.notice("You have already favorited this post");
+          }
         }
         e.preventDefault();
       });

app/assets/javascripts/shortcuts.js

@@ -17,6 +17,10 @@
 
     if ($("#image").length) { // post page or bookmarklet upload page
       $(document).bind("keydown", "shift+e", function(e) {
+        if (Danbooru.meta("current-user-id") == "") { // anonymous
+          return;
+        }
+
         if (!$("#edit-dialog").length) {
           $("#edit").show();
           $("#comments").hide();
@@ -33,7 +37,9 @@
 
     if ($("#c-posts").length && $("#a-show").length) {
       $(document).bind("keydown", "shift+o", function(e) {
-        Danbooru.Post.approve(Danbooru.meta("post-id"));
+        if (Danbooru.meta("current-user-can-approve-posts") === "true") {
+          Danbooru.Post.approve(Danbooru.meta("post-id"));
+        }
       });
 
       $(document).bind("keydown", "r", function(e) {