much nicer way of rendering the list view, with easier updates and such

Listing.cs

@@ -6,7 +6,7 @@ namespace Buypeeb {
 		public string url { get; set; }
 		public string id { get; set; }
 		public string name { get; set; }
-		public int price;
+		public int price = 0;
 		public int win_price;
 		public string original_name;
 		public bool favourite { get; set; } = false;

MainWindow.cs

@@ -37,6 +37,7 @@ namespace Buypeeb {
 
 		private ListStore items;
 		private Settings settings;
+		private TreeView itemTreeView;
 
 		static SemaphoreSlim tasklimit = new SemaphoreSlim(4);
 
@@ -48,12 +49,23 @@ namespace Buypeeb {
 			this.Title = "Buypeeb";
 
 			builder.Autoconnect(this);
-			this.items = (ListStore)builder.GetObject("ListItems");
+
+			// bind treeview columns to watchlist instead of needing to manually sync its liststore
+			this.itemTreeView = (TreeView)builder.GetObject("TreeViewItems");
+			this.items = new ListStore(typeof(Listing));
 			this.RenderList();
 
+			this.itemTreeView.Model = this.items;
+			//TODO: make this less verbose
+			this.itemTreeView.Columns[ItemColumns.Name].SetCellDataFunc(this.itemTreeView.Columns[ItemColumns.Name].Cells[0], new Gtk.TreeCellDataFunc(this.RenderColumnName));
+			this.itemTreeView.Columns[ItemColumns.PriceYen].SetCellDataFunc(this.itemTreeView.Columns[ItemColumns.PriceYen].Cells[0], new Gtk.TreeCellDataFunc(this.RenderColumnPriceYen));
+			this.itemTreeView.Columns[ItemColumns.PriceAUD].SetCellDataFunc(this.itemTreeView.Columns[ItemColumns.PriceAUD].Cells[0], new Gtk.TreeCellDataFunc(this.RenderColumnPriceAUD));
+			this.itemTreeView.Columns[ItemColumns.Ending].SetCellDataFunc(this.itemTreeView.Columns[ItemColumns.Ending].Cells[0], new Gtk.TreeCellDataFunc(this.RenderColumnEnding));
+
 			foreach (object[] row in this.items) {
-				Console.WriteLine(row[ItemColumns.Name]);
+				Console.WriteLine(row[0]);
 			}
+
 			DeleteEvent += Window_Shutdown;
 		}
 
@@ -73,8 +85,20 @@ namespace Buypeeb {
 			item.ready = true;
 			Console.WriteLine($"{id} updated.");
 			Gtk.Application.Invoke(delegate {
-				// this.RenderListItem(id);\
+				//TODO: surely there's a better way to do this
-				this.RenderList();
+				TreeIter iter;
+				this.itemTreeView.Model.GetIterFirst(out iter);
+
+				for (int i = 0; i < this.itemTreeView.Model.IterNChildren(); i++) {
+					var x = (Listing)this.itemTreeView.Model.GetValue(iter, 0);
+					if (x.id == id) {
+						this.items.EmitRowChanged(this.itemTreeView.Model.GetPath(iter), iter);
+						break;
+					}
+					else {
+						this.itemTreeView.Model.IterNext(ref iter);
+					}
+				}
 			});
 		}
 
@@ -114,9 +138,8 @@ namespace Buypeeb {
 
 		private void RenderList() {
 			this.items.Clear();
-			foreach (KeyValuePair<string, Listing> entry in settings.watchlist) {
+			foreach (var item in this.settings.watchlist) {
-				string[] values = new[] { entry.Value.name, entry.Value.PriceJPY(), entry.Value.PriceAUD(), "whenever", entry.Value.id };
+				items.AppendValues(item.Value);
-				this.items.AppendValues(values);
 			}
 		}
 
@@ -188,5 +211,27 @@ namespace Buypeeb {
 			Console.WriteLine("ButtonSelectedRenameClicked");
 		}
 
+		// column renderers
+
+		private void RenderColumnName(Gtk.TreeViewColumn column, Gtk.CellRenderer cell, Gtk.ITreeModel model, Gtk.TreeIter iter) {
+			Listing item = (Listing)model.GetValue(iter, 0);
+			(cell as Gtk.CellRendererText).Text = item.name ?? "Loading...";
+		}
+
+		private void RenderColumnPriceYen(Gtk.TreeViewColumn column, Gtk.CellRenderer cell, Gtk.ITreeModel model, Gtk.TreeIter iter) {
+			Listing item = (Listing)model.GetValue(iter, 0);
+			(cell as Gtk.CellRendererText).Text = item.PriceJPY();
+		}
+
+		private void RenderColumnPriceAUD(Gtk.TreeViewColumn column, Gtk.CellRenderer cell, Gtk.ITreeModel model, Gtk.TreeIter iter) {
+			Listing item = (Listing)model.GetValue(iter, 0);
+			(cell as Gtk.CellRendererText).Text = item.PriceAUD();
+		}
+
+		private void RenderColumnEnding(Gtk.TreeViewColumn column, Gtk.CellRenderer cell, Gtk.ITreeModel model, Gtk.TreeIter iter) {
+			Listing item = (Listing)model.GetValue(iter, 0);
+			(cell as Gtk.CellRendererText).Text = "whatever";
+		}
+
 	}
 }

ui/main.glade

@@ -287,7 +287,7 @@
                     <property name="shadow_type">in</property>
                     <property name="min_content_width">200</property>
                     <child>
-                      <object class="GtkTreeView">
+                      <object class="GtkTreeView" id="TreeViewItems">
                         <property name="visible">True</property>
                         <property name="can_focus">True</property>
                         <property name="model">ListItems</property>