~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';

/* Creates a group */

function create_new_group(projectsetid)

{

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

    /* If the provided name is empty, or the prompt is cancelled, stop. */

    if (groupnm)

    {

        args = {

            'projectsetid': projectsetid,

            'groupnm':groupnm,

            'nick': groupnm

        };

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

        if (response.status == 200)

        {

            /* pass */

        }

        else if (response.status == 400)

        {

            alert("Could not create group: " + response.getResponseHeader('X-IVLE-Error'));

        }

        else

        {

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

        }

        /* Reload the display */

        window.location.href = window.location.href;

    }

}

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 member = groupmembers[i];

            var li = dom_make_text_elem("li", member.fullname + " (" +

                                              member.login + ")");

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

            rmbutton.value = "Remove";

            rmbutton.type = "image";

            /* XXX: There must be a better way to do this! */

            rmbutton.src = "/+media/ivle.webapp.groups/cross.png";

            $(rmbutton).click(function(offeringid, login, groupid, elemnm)

            {

                return function() {

                    if (!confirm("Are you sure want to revoke this user's membership?"))

                        return;

                    this.disabled = true;

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

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

                    list_projectgroup_contents(offeringid, groupid, elemnm);

                };

            }(offeringid, member.login, groupid, elemnm));

            li.appendChild(rmbutton);

            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).click(function()

        {

            this.disabled = true;

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

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

            list_projectgroup_contents(offeringid, groupid, elemnm);

        });

        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');

}