Update query methodology, rename alignment method

Previous method was flawed in that it operates on one element "too high"
in the DOM. Instead, query the widgetid and utilize this to modify the
style of the DOM.

Renamed the text alignment method to textAlign to better match the CSS
terminology.

Author: sco1

mlapptools.m

@@ -3,6 +3,11 @@
     %
     % MLAPPTOOLS methods:
 
+    properties
+        % TODO: Move generic portions of repeated dojo query strings here
+        % to reduce copypasta errors as the number of methods expands
+    end
+    
     methods
         function obj = mlapptools
             % Dummy constructor so we don't return an empty class instance
@@ -11,24 +16,28 @@
     end
 
     methods (Static)
-        function alignstring(uielement, alignment)
+        function textAlign(uielement, alignment)
             alignment = lower(alignment);
             mlapptools.validatealignmentstr(alignment)
             mlapptools.togglewarnings('off')
 
             rez = '';
             while ~strcmp(rez, sprintf('"%s"', alignment))
                 try
-                    % 1. Get a handle to the webwindow:
+                    % Get a handle to the webwindow
                     win = struct(struct(uielement.Parent).Controller).Container.CEF;
-                    % 2. Find which element of the DOM we want to edit (as before):
+                    
+                    % Find which element of the DOM we want to edit
                     data_tag = char(struct(uielement).Controller.ProxyView.PeerNode.getId);
-                    % 3. Manipulate the DOM via a JS command
-                    JSstr = sprintf('dojo.style(dojo.query("[data-tag^=''%s'']")[0], "textAlign", "%s")', ...
-                                  data_tag, alignment);
-                    rez = win.executeJS(JSstr);
+                    
+                    % Manipulate the DOM via a JS command
+                    widgetquerystr = sprintf('dojo.getAttr(dojo.query("[data-tag^=''%s''] > div")[0], "widgetid")', data_tag);
+                    widgetID = win.executeJS(widgetquerystr);
+                    widgetID = widgetID(2:end-1);
+                    
+                    alignsetstr = sprintf('dojo.style(dojo.query("#%s")[0], "textAlign", "%s")', widgetID, alignment);
+                    rez = win.executeJS(alignsetstr);
                 catch
-                    % TODO: See if an infinite loop condition is possible
                     pause(1); % Give the figure (webpage) some more time to load
                 end
             end