add cleanFeedTitle flag + helper function

Author: BRONSOLO

plotly/plotlyfig.m

@@ -50,6 +50,7 @@
             obj.UserData.Verbose = true;
 
             %-PlotOptions-%
+            obj.PlotOptions.CleanFeedTitle = true; 
             obj.PlotOptions.FileName = '';
             obj.PlotOptions.FileOpt = 'new';
             obj.PlotOptions.WorldReadable = true;
@@ -360,9 +361,14 @@ function validate(obj)
             % validate keys
             validate(obj);
 
-            % handle title
+            % handle filename
             handleFileName(obj);
 
+            % handle title (for feed)
+            if obj.PlotOptions.CleanFeedTitle
+                cleanFeedTitle(obj);
+            end
+                
             %args
             args.filename = obj.PlotOptions.FileName;
             args.fileopt = obj.PlotOptions.FileOpt;

plotly/plotlyfig_aux/helpers/cleanFeedTitle.m

@@ -0,0 +1,31 @@
+function cleanFeedTitle(obj)
+% cleanFeedTitle checks all annotations for a title. The first title found 
+% is used as the layout.title (Plotly title). This should correspond to the 
+% title of the first plot added to the MATLAB figure. As a workaround, only 
+% the text is used so that the title appears in the feed. The text color is
+% set so that the Plotly title is hidden from the graph, favouring the 
+% annotation title (with its flexibilty over positioning). 
+
+    if ~isempty(obj.State.Figure.NumTexts)
+        
+        % grab the title of the first plot added to the figure. 
+        first_title_index = find(arrayfun(@(x)(isequal(x.Title, 1)), ...
+            obj.State.Text), 1, 'first');
+        
+        if ~isempty(first_title_index)
+           
+            first_title_handle = obj.State.Text(first_title_index).Handle; 
+            
+            % grab the string of the first title
+            first_title = get(first_title_handle, 'String'); 
+            interp = get(first_title_handle, 'Interpreter');
+            first_title_parsed = parseString(first_title, interp);
+            
+            % use that as the filename
+            obj.layout.title = first_title_parsed;
+
+            % make the title invisible
+            obj.layout.titlefont.color = 'rgba(0,0,0,0)'; 
+        end
+    end
+end