uList.php

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<?php
  /*
   This file is part of DocBookWiki.  DocBookWiki is a web application
   that displays and edits DocBook documents.

   Copyright (C) 2004, 2005, 2006, 2007
   Dashamir Hoxha, dashohoxha@users.sourceforge.net

   DocBookWiki 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.

   DocBookWiki 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  DocBookWiki;  if  not,  write  to  the  Free  Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
   USA
  */

class uList extends WebObject
{
  function init()
  {
    $this->addSVar('recs_per_page', '10');
    $this->addSVar('current_page', '1');

    $this->addSVar('currentUser', UNDEFINED);      
    //set current the first user in the list
    $this->selectFirst();  
  }

  function selectFirst()
  {
    $this->add_users_rs();

    global $webPage;
    $rs = $webPage->getRecordset('users');

    $rs->MoveFirst();
    $first_user = ($rs->EOF() ? UNDEFINED : $rs->Field('username'));

    $this->setSVar('currentUser', $first_user);
  }

  function on_next($event_args)
  {
    $page = $event_args["page"];
    $this->setSVar('current_page', $page);
    $this->selectFirst();
  }

  function on_select($event_args)
  {
    $user = $event_args['username'];
    $this->setSVar('currentUser', $user);
  }

  function on_delete($event_args)
  {
    $book_id = WebApp::getSVar('books->selected_book');
    $username = $event_args['username'];
    shell(SCRIPTS."books/del_user.sh $book_id $username");

    //set current the first user in the list
    $this->selectFirst();

    //acknowledgment message
    $msg = T_("User v_username deleted.");
    $msg = str_replace('v_username', $username, $msg);
    WebApp::message($msg);
  }

  function on_add_user($event_args)
  {
    $username = $event_args['user'];

    //if username does not exist, add it
    include_once SCRIPTS.'user_data.php';
    $user_data = get_user_data($username);
    $username1 = $user_data['username'];
    if ($username1=='')
      {
        $user_data = array(
                           'username' => $username,
                           'password' => '', 
                           'name'     => $username,
                           'email'    => $username.'@domain.net',
                           'books'    => ''
                           );
        save_user_data($user_data);
      }

    //create the access file for this user in the current book
    $book_id = WebApp::getSVar('books->selected_book');
    shell(SCRIPTS."books/add_user.sh $book_id $username");

    //set the new user as the current user
    $this->setSVar('currentUser', $username);
  }

  function onRender()
  {
    $this->add_users_rs();
    $this->add_all_users_rs();
    WebApp::addVars($this->get_page_vars());
  }

  function add_all_users_rs()
  {
    //get the results
    $results = shell(SCRIPTS.'users/get_all_users.sh');

    //process the results and fill the recordset
    $lines = explode("\n", $results);
    $rs = new EditableRS('all_users');
    for ($i=0; $i < sizeof($lines); $i++)
      {
        $user = trim($lines[$i]);
        if ($user=='')  continue;
        $rs->addRec(array('user'=>$user));
      }

    //add the recordset to the page
    global $webPage;
    $webPage->addRecordset($rs);
  }

  function add_users_rs()
  {
    //check that it is not already added
    global $webPage;
    $rs = $webPage->getRecordset('users');
    if ($rs != UNDEFINED)  return;

    //calculate $first and $last records
    $rp = $this->getSVar('recs_per_page');
    $cp = $this->getSVar('current_page');
    $first = 1 + ($cp - 1)*$rp;
    if ($first < 1)  $first = 1;
    $last = $cp * $rp;

    //get the results
    $book_id = WebApp::getSVar('books->selected_book');
    $cmd = SCRIPTS."books/get_user_list.sh \"$book_id\" $first $last";
    $results = shell($cmd);
    //print "<xmp>$cmd \n\n$results\n</xmp>";  //debug

    //process the results and fill the recordset
    $lines = explode("\n", $results);
    $rs = new EditableRS('users');
    for ($i=0; $i < sizeof($lines); $i++)
      {
        $username = trim($lines[$i]);
        if ($username=='')  continue;
        $rs->addRec(array('username'=>$username));
      }

    //add the recordset to the page
    global $webPage;
    $webPage->addRecordset($rs);
  }

  function get_nr_of_recs()
  {
    $book_id = WebApp::getSVar('books->selected_book');
    $str_cnt = shell(SCRIPTS."books/get_user_nr.sh \"$book_id\"");
    $nr_of_recs = 0 + $str_cnt;
    return $nr_of_recs;
  }

  function get_page_vars()
  {           
    $current_page = $this->getSVar('current_page');
    $recs_per_page = $this->getSVar('recs_per_page');
    $nr_of_recs = $this->get_nr_of_recs();

    $nr_of_pages = ceil($nr_of_recs / $recs_per_page);
    if ($current_page > $nr_of_pages)  $current_page=$nr_of_pages;

    if ($current_page==$nr_of_pages)
      $next_page = "1"; //next page of the last page is the first page
    else
      $next_page = $current_page + 1;

    if ($current_page <= 1)
      {
        //previous page of the first page is the first page itself
        $prev_page = $current_page;
      }
    else
      $prev_page = $current_page - 1;

    $first_rec = 1 + ($current_page - 1)*$recs_per_page;
    if ($first_rec < 1)  $first_rec = 1;
    $last_rec   = $current_page * $recs_per_page;
    if ($first_rec > $nr_of_recs)  $first_rec = $nr_of_recs; 
    if ($last_rec  > $nr_of_recs)  $last_rec  = $nr_of_recs; 

    $page_vars = 
      array(
            //the number of the first record of the page
            "FirstRec" => $first_rec,
            //the number of the last record of the page               
            "LastRec"  => $last_rec,
            //the number of all records that can be retrieved by the query
            "AllRecs"  => $nr_of_recs,
            //current page of records that is retrieved
            "CurrPage" => $current_page,
            //the number of the next page
            "NextPage" => $next_page,
            //the number of the previous page
            "PrevPage" => $prev_page,
            //the number of the last page
            "LastPage" => $nr_of_pages
            );
    return $page_vars;
  }
}
?>

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