adds vendor directory

vendors dependencies in standard `vendor` directory, managed by glide

vendor/github.com/mattn/go-gtk/example/treeview/treeview.go

@@ -0,0 +1,60 @@
+package main
+
+import (
+	"github.com/mattn/go-gtk/gdkpixbuf"
+	"github.com/mattn/go-gtk/glib"
+	"github.com/mattn/go-gtk/gtk"
+	"os"
+	"strconv"
+)
+
+func main() {
+	gtk.Init(&os.Args)
+	window := gtk.NewWindow(gtk.WINDOW_TOPLEVEL)
+	window.SetTitle("GTK Folder View")
+	window.Connect("destroy", gtk.MainQuit)
+
+	swin := gtk.NewScrolledWindow(nil, nil)
+
+	store := gtk.NewTreeStore(gdkpixbuf.GetType(), glib.G_TYPE_STRING)
+	treeview := gtk.NewTreeView()
+	swin.Add(treeview)
+
+	treeview.SetModel(store.ToTreeModel())
+	treeview.AppendColumn(gtk.NewTreeViewColumnWithAttributes("pixbuf", gtk.NewCellRendererPixbuf(), "pixbuf", 0))
+	treeview.AppendColumn(gtk.NewTreeViewColumnWithAttributes("text", gtk.NewCellRendererText(), "text", 1))
+
+	for n := 1; n <= 10; n++ {
+		var iter1, iter2, iter3 gtk.TreeIter
+		store.Append(&iter1, nil)
+		store.Set(&iter1, gtk.NewImage().RenderIcon(gtk.STOCK_DIRECTORY, gtk.ICON_SIZE_SMALL_TOOLBAR, "").GPixbuf, "Folder"+strconv.Itoa(n))
+		store.Append(&iter2, &iter1)
+		store.Set(&iter2, gtk.NewImage().RenderIcon(gtk.STOCK_DIRECTORY, gtk.ICON_SIZE_SMALL_TOOLBAR, "").GPixbuf, "SubFolder"+strconv.Itoa(n))
+		store.Append(&iter3, &iter2)
+		store.Set(&iter3, gtk.NewImage().RenderIcon(gtk.STOCK_FILE, gtk.ICON_SIZE_SMALL_TOOLBAR, "").GPixbuf, "File"+strconv.Itoa(n))
+	}
+
+	treeview.Connect("row_activated", func() {
+		var path *gtk.TreePath
+		var column *gtk.TreeViewColumn
+		treeview.GetCursor(&path, &column)
+		mes := "TreePath is: " + path.String()
+		dialog := gtk.NewMessageDialog(
+			treeview.GetTopLevelAsWindow(),
+			gtk.DIALOG_MODAL,
+			gtk.MESSAGE_INFO,
+			gtk.BUTTONS_OK,
+			mes)
+		dialog.SetTitle("TreePath")
+		dialog.Response(func() {
+			dialog.Destroy()
+		})
+		dialog.Run()
+	})
+
+	window.Add(swin)
+	window.SetSizeRequest(400, 200)
+	window.ShowAll()
+
+	gtk.Main()
+}