~azzar1/unity/add-show-desktop-key

/* IVLE - Informatics Virtual Learning Environment

 * Copyright (C) 2007-2008 The University of Melbourne

 *

 * 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 St, Fifth Floor, Boston, MA  02110-1301  USA

 *

 * Module: Group management system (client)

 * Author: Matt Giuca

 * Date: 21/7/2008

 */

serviceapp = 'userservice';

function create(offeringid)

{

    /* TODO: Write this function */

}

/* Displays the selected group in the group adminsitration area

 */

function manage_subject()

{

    /* Get the subject id from the select box */

    var subject_select = document.getElementById("subject_select");

    var subject_div = document.getElementById("subject_div");

    var subjectid = parseInt(subject_select.value);

    /* List active offerings */

    dom_removechildren(subject_div);

    var p = dom_make_text_elem("h2", "Active Offerings");

    subject_div.appendChild(p);

    var callback = function(xhr) 

    {

        var offerings = JSON.parse(xhr.responseText);

        for (var i=0; i<offerings.length; i++)

        {

            var offering = offerings[i];

            var text = offering.subj_name + ", Semester " + offering.semester + " " + offering.year;

            var h3 = dom_make_text_elem("h3", text);

            subject_div.appendChild(h3);

            var div = document.createElement("div");

            subject_div.appendChild(div);

            manage_subject_offering(offering['offeringid'], div);

        }

    }

    ajax_call(callback, serviceapp, 'get_active_offerings', {'subjectid': subjectid}, 'GET');

}

/* Manages the display of a single offerings groups

 * Takes a offeringid and element to attach the results to

 */

function manage_subject_offering(offeringid, elem)

{

    var callback = function(xhr)

    {

        var projectsets = JSON.parse(xhr.responseText);

        var dl = document.createElement("dl");

        elem.appendChild(dl);

        /* Add details for each project set */

        for (var i=0; i<projectsets.length; i++)

        {

            var projectset = projectsets[i];

            var groups = projectset.groups;

            var dt = dom_make_text_elem("dt", "Project Set "+(i+1)+" ");

            dl.appendChild(dt);

            var dd = document.createElement("dd");

            var ul = document.createElement("ul");

            dd.appendChild(ul);

            /* Add each group in the project set */

            for (var j=0; j<groups.length; j++)

            {

                var group = groups[j];

                var namespace = "project_group_" + group.groupid;

                var li = dom_make_text_elem("li", group['groupnm']+" ");

                li.id = namespace;

                var button = document.createElement("a");

                button.id = namespace+"_button";

                button.setAttribute("class", "choice");

                button.textContent = '(manage)';

                button.setAttribute("onclick",

                    "manage_group("+offeringid+","+group.groupid+",'"+namespace+"')");

                li.appendChild(button);

                ul.appendChild(li);

            }

            var li = dom_make_text_elem("li", "");

            var input = document.createElement("input");

            input.value = "New";

            input.type = 'button';

            input.setAttribute("onclick", "create_new_group("+projectset['projectsetid']+")");

            li.appendChild(input);

            ul.appendChild(li);

            dl.appendChild(dd);

        }

    }

    ajax_call(callback, serviceapp, 'get_project_groups', {'offeringid': offeringid}, 'GET');

}

/* Creates a group */

function create_new_group(projectsetid)

{

    groupnm = window.prompt('Please enter a name for the group');

    args = {'projectsetid': projectsetid, 'groupnm':groupnm, 'nick': groupnm};

    response = ajax_call(null, serviceapp, 'create_group', args, 'POST');

    if (response.status == 200)

    {

        /* pass */

    }

    else

    {

        alert("Error: Could not add group. Does it already exist?");

    }

    /* Reload the display */

    manage_subject();

}

function manage_group(offeringid, groupid, namespace)

{

    var elem = document.getElementById(namespace);

    var button = document.getElementById(namespace+"_button");

    var manage_div = document.createElement("div")

    manage_div.id = namespace + "_contents";

    elem.insertBefore(manage_div, button);

    /* Refresh contents */

    list_projectgroup_contents(offeringid, groupid, manage_div.id);

    /* Remove the button element */

    elem.removeChild(button);

}

/* Lists the information about a particular project group identified by groupid 

 * in an offering identified by offeringid in the element with id elemnm. May 

 * be called multiple times safely to refresh the displayed information.

 */

function list_projectgroup_contents(offeringid, groupid, elemnm)

{

    var contents = document.getElementById(elemnm);

    dom_removechildren(contents);

    var callback = function(xhr)

    {

        var members = JSON.parse(xhr.responseText);

        var available = members.available;

        var groupmembers = members.groupmembers;

        /* Existing members */

        var ul = document.createElement("ul");

        for (var i=0; i<groupmembers.length; i++)

        {

            var li = dom_make_text_elem("li", groupmembers[i].fullname + " (" +

                                              groupmembers[i].login + ")");

            ul.appendChild(li);

        }

        /* Add member box */

        var add_li = document.createElement("li");

        var select = document.createElement("select");

        for (var i=0; i<available.length; i++)

        {

            var option = dom_make_text_elem("option", available[i].login);

            option.value = available[i].login;

            select.appendChild(option);

        }

        var button = document.createElement("input");

        button.value = "Add";

        button.type = 'button';

        button.addEventListener("click", function()

        {

            args = {'login': select.value, 'groupid': groupid};

            ajax_call(null, serviceapp, 'assign_group', args, 'POST');

            list_projectgroup_contents(offeringid, groupid, elemnm);

        }, false);

        add_li.appendChild(select);

        add_li.appendChild(button);

        ul.appendChild(add_li);

        contents.appendChild(ul);

    }

    var args = {'offeringid': offeringid, 'groupid': groupid};

    ajax_call(callback, serviceapp, 'get_group_membership', args, 'GET');

}