admin/pagelib.php

   1 <?php // $Id$
   2
   3 require_once($CFG->libdir.'/pagelib.php');
   4
   5 define('PAGE_ADMIN', 'admin');
   6
   7 define('BLOCK_L_MIN_WIDTH',0);
   8 define('BLOCK_L_MAX_WIDTH',210);
   9 define('BLOCK_R_MIN_WIDTH',0);
  10 define('BLOCK_R_MAX_WIDTH',210);
  11
  12 page_map_class(PAGE_ADMIN, 'page_admin');
  13
  14 class page_admin extends page_base {
  15
  16     var $section;
  17     var $pathtosection;
  18     var $visiblepathtosection;
  19
  20     // hack alert!
  21     // this function works around the inability to store the section name
  22     // in default block, maybe we should "improve" the blocks a bit?
  23     function init_extra($section) {
  24         global $CFG;
  25
  26         if($this->full_init_done) {
  27             return;
  28         }
  29
  30         $adminroot = admin_get_root();
  31
  32         // fetch the path parameter
  33         $this->section = $section;
  34
  35         $this->visiblepathtosection = array();
  36
  37         // this part is (potentially) processor-intensive... there's gotta be a better way
  38         // of handling this
  39         if ($this->pathtosection = $adminroot->path($this->section)) {
  40             foreach($this->pathtosection as $element) {
  41                 if ($pointer = $adminroot->locate($element)) {
  42                     array_push($this->visiblepathtosection, $pointer->visiblename);
  43                 }
  44             }
  45         }
  46
  47         // all done
  48         $this->full_init_done = true;
  49     }
  50
  51     function blocks_get_default() {
  52         return 'admin_tree,admin_bookmarks';
  53     }
  54
  55     // seems reasonable that the only people that can edit blocks on the admin pages
  56     // are the admins... but maybe we want a role for this?
  57     function user_allowed_editing() {
  58         return has_capability('moodle/site:manageblocks', get_context_instance(CONTEXT_SYSTEM, SITEID));
  59     }
  60
  61     // has to be fixed. i know there's a "proper" way to do this
  62     function user_is_editing() {
  63         global $USER;
  64         return $USER->adminediting;
  65     }
  66
  67     function url_get_path() {
  68         global $CFG;
  69
  70         $adminroot = admin_get_root();
  71
  72         $root = $adminroot->locate($this->section);
  73         if (is_a($root, 'admin_externalpage')) {
  74             return $root->url;
  75         } else {
  76             return ($CFG->wwwroot . '/' . $CFG->admin . '/settings.php');
  77         }
  78     }
  79
  80     function url_get_parameters() {  // only handles parameters relevant to the admin pagetype
  81         return array('section' => (isset($this->section) ? $this->section : ''));
  82     }
  83
  84     function blocks_get_positions() {
  85         return array(BLOCK_POS_LEFT, BLOCK_POS_RIGHT);
  86     }
  87
  88     function blocks_default_position() {
  89         return BLOCK_POS_LEFT;
  90     }
  91
  92     function blocks_move_position(&$instance, $move) {
  93         if($instance->position == BLOCK_POS_LEFT && $move == BLOCK_MOVE_RIGHT) {
  94             return BLOCK_POS_RIGHT;
  95         } else if ($instance->position == BLOCK_POS_RIGHT && $move == BLOCK_MOVE_LEFT) {
  96             return BLOCK_POS_LEFT;
  97         }
  98         return $instance->position;
  99     }
 100
 101     // does anything need to be done here?
 102     function init_quick($data) {
 103         parent::init_quick($data);
 104     }
 105
 106     function print_header($section = '') {
 107         global $USER, $CFG, $SITE;
 108
 109         $this->init_full($section); // we're trusting that init_full() has already been called by now; it should have.
 110                                     // if not, print_header() has to be called with a $section parameter
 111
 112         if ($this->user_allowed_editing()) {
 113             $buttons = '<div><form '.$CFG->frametarget.' method="get" action="' . $this->url_get_path() . '">'.
 114                        '<fieldset class="invisiblefieldset"><input type="hidden" name="adminedit" value="'.($this->user_is_editing()?'off':'on').'" />'.
 115                        '<input type="hidden" name="section" value="'.$this->section.'" />'.
 116                        '<input type="submit" value="'.get_string($this->user_is_editing()?'blockseditoff':'blocksediton').'" /></fieldset></form></div>';
 117         } else {
 118             $buttons = '&nbsp;';
 119         }
 120
 121         print_header("$SITE->shortname: " . implode(": ",$this->visiblepathtosection), $SITE->fullname,
 122                        implode(" -> ",$this->visiblepathtosection),'', '', true, $buttons, '');
 123     }
 124
 125     function get_type() {
 126         return PAGE_ADMIN;
 127     }
 128 }
 129
 130 ?>