(* Guestfs Browser.
 * Copyright (C) 2011 Red Hat Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *)

open Utils

open Printf

let rec disk_usage tree path =
  let model = tree#model in
  let row = model#get_iter path in
  let src, pathname = tree#get_pathname row in
  debug "disk_usage %s" pathname;

  (* See if this node already has an Info "disk_usage" child node.  If
   * so they don't recreate it.
   *)
  let info_text = "disk_usage" in
  if not (tree#has_child_info_node path info_text) then (
    tree#set_child_info_node path info_text "<i>Calculating disk usage ...</i>";

    Slave.disk_usage src pathname (when_disk_usage tree path pathname)
  )

and when_disk_usage tree path pathname kbytes =
  let model = tree#model in
  let row = model#get_iter path in
  tree#set_visited row;

  (* Find the Info "disk_usage" child node added above, and replace the
   * text in it with the final size.
   *)
  let info_text = "disk_usage" in
  let msg =
    sprintf "<b>%s</b>\n<small>Disk usage of %s (%Ld KB)</small>"
      (human_size_1k kbytes) pathname kbytes in
  tree#set_child_info_node path info_text msg