moodle/mod/chat/view.php

<?PHP  // $Id$

/// This page prints a particular instance of chat

    require_once("../../config.php");
    require_once("lib.php");

    optional_variable($id);    // Course Module ID, or
    optional_variable($c);     // chat ID

    if ($id) {
        if (! $cm = get_record("course_modules", "id", $id)) {
            error("Course Module ID was incorrect");
        }
    
        if (! $course = get_record("course", "id", $cm->course)) {
            error("Course is misconfigured");
        }

        chat_update_chat_times($cm->instance);
    
        if (! $chat = get_record("chat", "id", $cm->instance)) {
            error("Course module is incorrect");
        }

    } else {
        chat_update_chat_times($c);

        if (! $chat = get_record("chat", "id", $c)) {
            error("Course module is incorrect");
        }
        if (! $course = get_record("course", "id", $chat->course)) {
            error("Course is misconfigured");
        }
        if (! $cm = get_coursemodule_from_instance("chat", $chat->id, $course->id)) {
            error("Course Module ID was incorrect");
        }
    }

    require_course_login($course);

    add_to_log($course->id, "chat", "view", "view.php?id=$cm->id", $chat->id, $cm->id);

/// Print the page header

    $strchats = get_string("modulenameplural", "chat");
    $strchat  = get_string("modulename", "chat");
    $strenterchat  = get_string("enterchat", "chat");
    $stridle  = get_string("idle", "chat");
    $strcurrentusers  = get_string("currentusers", "chat");
    $strnextsession  = get_string("nextsession", "chat");

    print_header_simple("$chat->name", "",
                 "<A HREF=index.php?id=$course->id>$strchats</A> -> $chat->name", 
                  "", "", true, update_module_button($cm->id, $course->id, $strchat), 
                  navmenu($course, $cm));

    if (($chat->studentlogs or isteacher($course->id)) and !isguest()) {
        echo "<p align=right><a href=\"report.php?id=$cm->id\">".
              get_string("viewreport", "chat")."</a></p>";
    }

    print_heading($chat->name);

/// Check to see if groups are being used here
    if ($groupmode = groupmode($course, $cm)) {   // Groups are being used
        $currentgroup = setup_and_print_groups($course, $groupmode, "view.php?id=$cm->id");
    } else {
        $currentgroup = false;
    }

    if ($currentgroup) {
        $groupselect = " AND groupid = '$currentgroup'";
        $groupparam = "&groupid=$currentgroup";
    } else {
        $groupselect = "";
        $groupparam = "";
    }

/// Print the main part of the page

   // Do the browser-detection etc later on.
   // $chatversion = "header_js";

   // $browser = chat_browser_detect($HTTP_USER_AGENT);

   // print_object($browser);

   //if ($CFG->chatsocketserver == true) {
   //    chat_display_version("sockets", $browser);
   //} else {
   //    chat_display_version("push_js", $browser);
   // }
   // chat_display_version("header_js", $browser);
   // chat_display_version("header", $browser);
   // chat_display_version("box", $browser);
   // chat_display_version("text", $browser);


    if (!isguest()) {
        print_simple_box_start("center");
        link_to_popup_window ("/mod/chat/gui_$CFG->chat_method/index.php?id=$chat->id$groupparam", 
                              "chat$course->id$chat->id$groupparam", "$strenterchat", 500, 700, $strchat);
        print_simple_box_end();
    } else {
        notice(get_string('noguests', 'chat'));
    }


    if ($chat->chattime and $chat->schedule) {  // A chat is scheduled
        if (abs($USER->timezone) > 13) {
            $timezone = get_string("serverlocaltime");
        } else if ($USER->timezone < 0) {
            $timezone = "GMT".$USER->timezone;
        } else {
            $timezone = "GMT+".$USER->timezone;
        }
        echo "<p align=\"center\">$strnextsession: ".userdate($chat->chattime)." ($timezone)</p>";
    } else {
        echo "<br />";
    }

    if ($chat->intro) {
        print_simple_box( format_text($chat->intro) , "center");
        echo "<br />";
    }

    chat_delete_old_users();

    if ($chatusers = chat_get_users($chat->id, $currentgroup)) {
        $timenow = time();
        print_simple_box_start("center");
        print_heading($strcurrentusers);
        echo "<table width=\"100%\">";
        foreach ($chatusers as $chatuser) {
            $lastping = $timenow - $chatuser->lastmessageping;
            echo "<tr><td width=35>";
            echo "<a href=\"$CFG->wwwroot/user/view.php?id=$chatuser->id&course=$chat->course\">";
            print_user_picture($chatuser->id, 0, $chatuser->picture, false, false, false);
            echo "</a></td><td valign=center>";
            echo "<p><font size=1>";
            echo fullname($chatuser).'<br />';
            echo "<font color=\"#888888\">$stridle: ".format_time($lastping)."</font>";
            echo "</font></p>";
            echo "<td></tr>";
        }
        echo "</table>";
        print_simple_box_end();
    }


/// Finish the page
    print_footer($course);

?>