// Add the columns to the TreeView

            Gtk.TreeViewColumn reagentEnabledColumn = new Gtk.TreeViewColumn ();

            reagentEnabledColumn.Title = "Enabled";

            Gtk.CellRendererToggle reagentEnabledCell = new Gtk.CellRendererToggle ();

            reagentEnabledCell.Activatable = true;

            reagentEnabledCell.Sensitive = true;

            reagentEnabledCell.Mode = Gtk.CellRendererMode.Activatable;

            reagentEnabledCell.Toggled += new Gtk.ToggledHandler(OnReagentEnableToggled);

            reagentEnabledColumn.PackStart (reagentEnabledCell, true);

            //reagentEnabledColumn.AddAttribute(reagentEnabledCell, "active", 0);

            Gtk.TreeViewColumn reagentNameColumn = new Gtk.TreeViewColumn ();

            reagentNameColumn.Title = "Ingredient";

            Gtk.CellRendererText reagentNameCell = new Gtk.CellRendererText ();

            reagentNameColumn.PackStart (reagentNameCell, true);

            reagentNameColumn.AddAttribute(reagentNameCell, "text", 1);

            reagentNameColumn.Expand = true;

            Gtk.TreeViewColumn reagentCostColumn = new Gtk.TreeViewColumn ();

            reagentCostColumn.Title = "Cost";

            Gtk.CellRendererText reagentCostCell = new Gtk.CellRendererText ();

            reagentCostCell.Edited += OnReagentCostChanged;

            reagentCostCell.Editable = true;

            reagentCostCell.Sensitive = true;

            reagentCostColumn.PackStart (reagentCostCell, true);

            //reagentCostColumn.AddAttribute(reagentCostCell, "text", 0);

            Gtk.TreeViewColumn reagentMaxColumn = new Gtk.TreeViewColumn ();

            reagentMaxColumn.Title = "Max";

            Gtk.CellRendererText reagentMaxCell = new Gtk.CellRendererText ();

            reagentMaxCell.Edited += OnReagentQuantityChanged;

            reagentMaxCell.Editable = true;

            reagentMaxCell.Sensitive = true;

            reagentMaxColumn.PackStart (reagentMaxCell, true);

            //reagentMaxColumn.AddAttribute(reagentMaxCell, "text", 0);

            reagentListStore = new Gtk.ListStore(typeof(Reagent), typeof(string), typeof(Reagent), typeof(Reagent));

            foreach (string reagentName in ReagentManager.Names)

            {

                Reagent reagent = ReagentManager.GetReagent(reagentName);

                reagentListStore.AppendValues(reagent, reagentName); // , reagent, reagent);

            }

            reagentEnabledColumn.SetCellDataFunc (reagentEnabledCell, new Gtk.TreeCellDataFunc (RenderReagentToggle));

            reagentCostColumn.SetCellDataFunc (reagentCostCell, new Gtk.TreeCellDataFunc (RenderReagentCost));

            reagentMaxColumn.SetCellDataFunc (reagentMaxCell, new Gtk.TreeCellDataFunc (RenderReagentQuantity));

            // Assign the model to the TreeView

            reagentListView.Model = reagentListStore;

            reagentListView.AppendColumn(reagentEnabledColumn);

            reagentListView.AppendColumn(reagentNameColumn);

            reagentListView.AppendColumn(reagentCostColumn);

            reagentListView.AppendColumn(reagentMaxColumn);

            ShowAll();

        }

        protected void OnMaxIngredientsChanged(object sender, EventArgs e)

        {

            // TODO: save profile setting

            // TODO: no longer permit resume

                beginButton.Sensitive = true;

                ExportToWikiAction.Sensitive = true;

                IngredientsAction.Sensitive = true;

                stopResumeButton.Sensitive = false;

                maxIngredientsSpinButton.Sensitive = true;

                maxRecipeSpinButton.Sensitive = true;

                fullQuantitySpinButton.Sensitive = true;

                fullQuantityDepthSpinButton.Sensitive = true;

                //generator = null; // don't. Hang on to generator for resume.

                profile.SaveRecipes();

                if (canceling)

                {

                    generator.SaveState(System.IO.Path.Combine(profile.Directory, STATE_FILE));

                    stopResumeButton.Label = "Resume";

                    stopResumeButton.Sensitive = true;

                    beginButton.Label = "Restart";

        // Reagent view handling

        private void RenderReagentToggle (Gtk.TreeViewColumn column, Gtk.CellRenderer cell, Gtk.TreeModel model, Gtk.TreeIter iter)

        {

            Reagent reagent = (Reagent) model.GetValue (iter, 0);

            Gtk.CellRendererToggle toggle = (cell as Gtk.CellRendererToggle);

            toggle.Active = reagent.Enabled;

            toggle.Activatable = !reagent.IsCatalyst;

        }

        private void RenderReagentCost (Gtk.TreeViewColumn column, Gtk.CellRenderer cell, Gtk.TreeModel model, Gtk.TreeIter iter)

        {

            Reagent reagent = (Reagent) model.GetValue (iter, 0);

            (cell as Gtk.CellRendererText).Text = reagent.Cost.ToString();

        }

        private void RenderReagentQuantity (Gtk.TreeViewColumn column, Gtk.CellRenderer cell, Gtk.TreeModel model, Gtk.TreeIter iter)

        {

                    reagent.RecipeMax = newMax;

                    SaveReagentSettings();

                }

            }

        }

        private void OnReagentEnableToggled(object o, Gtk.ToggledArgs args)

        {

            Gtk.TreeIter iter;

            reagentListStore.GetIter (out iter, new Gtk.TreePath (args.Path));

            Reagent reagent = (Reagent) reagentListStore.GetValue (iter, 0);

        }

        private void SaveReagentSettings()

        {

            // save out state

            ReagentManager.SaveProfileReagents(profile.ReagentFile);

        }

<?xml version="1.0" encoding="utf-8"?>

<stetic-interface>

  <configuration>

    <images-root-path>..</images-root-path>

    <target-gtk-version>2.12</target-gtk-version>

  </configuration>

  <import>

    <widget-library name="glade-sharp, Version=2.12.0.0, Culture=neutral, PublicKeyToken=35e10195dab3c99f" />

  </import>

  <widget class="Gtk.Window" id="MainWindow" design-size="629 265">

    <action-group name="Default">

      <action id="FileAction">

        <property name="Type">Action</property>

        <property name="Accelerator">&lt;Alt&gt;f</property>

        <property name="Label" translatable="yes">_File</property>

        <property name="ShortLabel" translatable="yes">_File</property>