// *****************************************
// menu.js : dynamic hierarchical menu system
//
// (c) by E.F. de Moor (Creagraphy) ernst@creagraphy.nl
//
// date: april 8th 2002
//
//
// Following function are used for interfacing
//
// do_menu_sel              : distribution function for menu selection
// do_menu_over             : distribution function for menu over
// do_menu_out              : distribution function for menu out
//
// my_menu_sel(id)          : called when the user clicks a menu item in our own frame.
// my_menu_over(id)         : called when the mouse moves over a menu item of our own frame.
// my_menu_out(id)          : called when the mouse moves out a menu item of our own frame.
//
// menu_sel(id)             : called when the user clicks a menu item in any frame.
// menu_over(id)            : called when the mouse moves over a menu item in any frame.
// menu_out(id)             : called when the mouse moves out a menu item in any frame.
// set_page_info(sel, info) : called by the content frame, if the content changes.
//
// cms_onload(sel)          : called once when this frame is loaded
//
//
// Note about the my_menu... functions:
//      These functions are implemented in ../menu.inc.
//
// Note about the menu_sel, menu_over and menu_out functions:
//      Any frame is allowed to implement these (not just menu frames). This can be used
//      To give helpinformation (e.g. popup notes, textual explanations) in other frames
//      Whenever something happens with a menu button or whenever a new page is loaded
//      in the content frame.
//
// Note: Also new is that the content frame is now allowed to have a menu itself. This is
//       Handy to have a popup menu to appear over the content itself.


// Remember the last selection

// ------ Interface Functions -------

add_onload(onload_menu_strip);
add_page_info(page_info_strip);
add_menu_sel(menu_sel_strip);
add_menu_over(menu_over_strip);
add_menu_out(menu_out_strip);

function onload_menu_strip(sel) {
  set_states_from_sel(sel);
  check_pos(0,0);
  //Solve the IE6 bug: Force a refresh
  setTimeout('refresh_menu()', 15);
}

function page_info_strip(sel, info) {
  set_states_from_sel(sel);
  check_pos(0,0);
  //Solve the IE6 bug: Force a refresh
  setTimeout('refresh_menu()', 15);
}

function menu_sel_strip(id, item_x, item_y) {
  set_states(id);
  check_pos(item_x, item_y);
}

function menu_over_strip(id, item_x, item_y) {
  window.status = menu_tree[id].explanation;
  show_menu_item(id,1,menu_tree[id].visible,100);
}

function menu_out_strip(id, item_x, item_y) {
  window.status = '';
  show_menu_item(id,0,menu_tree[id].visible,100);
}

// ------ Menu functions -------


function check_pos(item_x, item_y) {
  var i;
  var cur_x;
  var cur_y;
  var total_width=0;
  var total_height=0;

  for(i=0; i<menu_tree.length; i++) {
    if(menu_tree[i].level == menu_settings_strip.min_menu_level &&
       menu_tree[i].visible) {
      if(menu_settings_strip.horizontal) {
        total_width += menu_tree_parms[i].width;
        if(menu_tree_parms[i].height > total_height)
          total_height = menu_tree_parms[i].height;
      }
      else {
        total_height += menu_tree_parms[i].height;
        if(menu_tree_parms[i].width > total_width)
          total_width= menu_tree_parms[i].width;
      }
    }
  }
  cur_x = calc_x(menu_settings_strip.x_pos[menu_settings_strip.min_menu_level],
                      menu_settings_strip.x_align[menu_settings_strip.min_menu_level],
                      item_x, total_width);
  cur_y = calc_y(menu_settings_strip.y_pos[menu_settings_strip.min_menu_level],
                      menu_settings_strip.y_align[menu_settings_strip.min_menu_level],
                      item_y, total_height);
  for(i=0; i<menu_tree.length; i++) {
    if((menu_tree[i].level == menu_settings_strip.min_menu_level) &&
       menu_tree[i].visible) {
      set_all_x(i, cur_x, 0);
      set_all_y(i, cur_y, 0);
      if(menu_settings_strip.horizontal)
        cur_x += menu_tree_parms[i].width;
      else
        cur_y += menu_tree_parms[i].height;
      show_menu_item(i,0,1,100);
    }
  }
}