Fixed bug where note deletion didn't properly remove the note link from the note tree.

Add a brief paragraph with instructions on how to add a note to the note tree, shown only when there are no notes there.
Added a heading for "recent notes", which should be filled out with links in a subsequent commit.

static/css/style.css

@@ -279,6 +279,11 @@ img {
   margin-bottom: 0.25em;
 }
 
+#recent_notes_area_title {
+  margin-top: 0.5em;
+  margin-bottom: 0.25em;
+}
+
 .note_tree_link {
   background: url(/static/images/note_icon.png) left center no-repeat;
   padding-left: 19px;
@@ -716,6 +721,7 @@ img {
 
 .small_text {
   font-size: 90%;
+  line-height: 140%;
   font-weight: normal;
 }
 

static/js/Wiki.js

@@ -1130,7 +1130,7 @@ Wiki.prototype.delete_editor = function ( event, editor ) {
     editor.shutdown();
     self.decrement_total_notes_count();
     self.display_empty_message();
-  } );
+  }, false, true );
 
   event.stop();
 }
@@ -1219,7 +1219,7 @@ Wiki.prototype.compare_versions = function( event, editor, previous_revision ) {
   this.load_editor( editor.title, editor.id, null, null, editor.closed ? null : editor.iframe );
 }
 
-Wiki.prototype.save_editor = function ( editor, fire_and_forget, callback, synchronous ) {
+Wiki.prototype.save_editor = function ( editor, fire_and_forget, callback, synchronous, suppress_save_signal ) {
   if ( !editor )
     editor = this.focused_editor;
 
@@ -1237,7 +1237,8 @@ Wiki.prototype.save_editor = function ( editor, fire_and_forget, callback, synch
       editor.mark_clean();
       if ( callback )
         callback();
-      signal( self, "note_saved", editor );
+      if ( !suppress_save_signal )
+        signal( self, "note_saved", editor );
     }, null, synchronous, fire_and_forget );
   } else {
     if ( callback )
@@ -2632,6 +2633,10 @@ Note_tree.prototype.add_root_link = function ( editor ) {
   var self = this;
   connect( expander, "onclick", function ( event ) { self.expand_link( event, editor.id ); } );
   connect( link, "onclick", function ( event ) { self.link_clicked( event ); } );
+
+  var instructions = getElement( "note_tree_instructions" );
+  if ( instructions )
+    addElementClass( instructions, "undisplayed" );
 }
 
 Note_tree.prototype.remove_link = function ( note_id ) {
@@ -2639,6 +2644,13 @@ Note_tree.prototype.remove_link = function ( note_id ) {
 
   if ( item )
     removeElement( item );
+
+  if ( getFirstElementByTagAndClassName( "a", null, "note_tree_root_table" ) )
+    return;
+
+  var instructions = getElement( "note_tree_instructions" );
+  if ( instructions )
+    removeElementClass( instructions, "undisplayed" );
 }
 
 Note_tree.prototype.rename_link = function ( editor, new_title ) {

view/Note_tree_area.py

@@ -25,9 +25,25 @@ class Note_tree_area( Div ):
             has_children = ( notebook.name != u"trash" ) and self.LINK_PATTERN.search( note.contents ) or False,
             root_note_id = note.object_id,
           ) for note in root_notes ],
+          Div(
+            u'Add a note here: Click the "options" tab on a note, then "show on startup".',
+            id = "note_tree_instructions",
+            class_ = u"small_text link_area_item" + ( ( len( root_notes ) > 0 ) and u" undisplayed" or u"" ),
+          ) or None,
           tree_id = "note_tree_root_table",
         ),
-        id = u"note_tree_area_holder",
+        H4( u"recent notes",
+          id = u"recent_notes_area_title",
+        ),
+        self.make_tree(
+          [ self.make_item(
+            title = note.title,
+            link_attributes = u'href="/notebooks/%s?note_id=%s"' % ( notebook.object_id, note.object_id ),
+            link_class = u"note_tree_link",
+            has_children = False,
+          ) for note in []],#recent_notes ],
+        ),
+        id = u"recent_notes_area_holder",
       ),
       Span( id = "tree_arrow_hover_preload" ),
       Span( id = "tree_arrow_down_preload" ),
@@ -55,9 +71,10 @@ class Note_tree_area( Div ):
     )
 
   @staticmethod
-  def make_tree( items, tree_id = None ):
+  def make_tree( items, other_node = None, tree_id = None ):
     return Table(
       items,
+      other_node,
       id = tree_id or None,
       class_ = u"note_tree_table",
     )