~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: Settings (Client-side JavaScript)

 * Author: Matt Giuca

 * Date: 25/2/2008

 */

var user_data;

/* Fetch the user's details from the server, and populate the page.

 * Returns false. */

function revert_settings()

{

    var callback = function(xhr)

        {

            user = JSON.parse(xhr.responseText);

            populate(user);

        }

    /* Just get details for the logged in user */

    ajax_call(callback, "userservice", "get_user", {"login": settings_login}, "GET");

    return false;

}

/* Populate the page with the given user's account details */

function populate(user)

{

    user_data = user;

    /* Plain text elements (non-editable) */

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

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

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

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

    /* Textbox (input) elements */

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

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

    var text;

    var p;

    var b;

    var table;

    var tbody;

    var tr;

    var td;

    var inputbox;

    /* Clear things */

    dom_removechildren(login);

    dom_removechildren(admin);

    dom_removechildren(changepassword);

    dom_removechildren(notices);

    /* Construct the page */

    /* "login" : Full Name (<b>login</b> / studentid) */

    text = user.fullname + " (";

    login.appendChild(document.createTextNode(text));

    text = user.login

    b = document.createElement("b");

    b.appendChild(document.createTextNode(text));

    login.appendChild(b);

    if (user.studentid != null)

        text = " / " + user.studentid + ")"

    else

        text = ")"

    login.appendChild(document.createTextNode(text));

    /* "admin" : <p>Privilege: <strong>administrator</strong></p>

     */

    if (user.admin)

    {

        text = "Privilege: ";

        admin.appendChild(document.createTextNode(text));

        strong = document.createElement("strong");

        strong.appendChild(document.createTextNode("IVLE administrator"));

        admin.appendChild(strong);

    }

    /* "nick" and "email" boxes */

    nick.value = user.nick;

    email.value = user.email;

    /* Password change box */

    /* (Only if this user has a local password) */

    if (user.local_password)

    {

        p = document.createElement("h3");

        p.appendChild(document.createTextNode("Change password"))

        changepassword.appendChild(p);

        p = document.createElement("p");

        p.appendChild(document.createTextNode("Please type your old password, "

                + "and new password twice, for verification."));

        changepassword.appendChild(p);

        table = document.createElement("table");

        tbody = document.createElement("tbody");

        tr = document.createElement("tr");

        td = document.createElement("td");

        td.appendChild(document.createTextNode("Old password:"))

        tr.appendChild(td);

        td = document.createElement("td");

        inputbox = document.createElement("input");

        inputbox.setAttribute("type", "password");

        inputbox.setAttribute("name", "oldpass");

        inputbox.setAttribute("id", "oldpass");

        inputbox.setAttribute("size", "40");

        td.appendChild(inputbox)

        tr.appendChild(td);

        tbody.appendChild(tr);

        tr = document.createElement("tr");

        td = document.createElement("td");

        td.appendChild(document.createTextNode("New password:"))

        tr.appendChild(td);

        td = document.createElement("td");

        inputbox = document.createElement("input");

        inputbox.setAttribute("type", "password");

        inputbox.setAttribute("name", "newpass");

        inputbox.setAttribute("id", "newpass");

        inputbox.setAttribute("size", "40");

        td.appendChild(inputbox)

        tr.appendChild(td);

        tbody.appendChild(tr);

        tr = document.createElement("tr");

        td = document.createElement("td");

        td.appendChild(document.createTextNode("Retype password:"))

        tr.appendChild(td);

        td = document.createElement("td");

        inputbox = document.createElement("input");

        inputbox.setAttribute("type", "password");

        inputbox.setAttribute("name", "repeatpass");

        inputbox.setAttribute("id", "repeatpass");

        inputbox.setAttribute("size", "40");

        td.appendChild(inputbox)

        tr.appendChild(td);

        tbody.appendChild(tr);

        table.appendChild(tbody);

        changepassword.appendChild(table);

    }

    if (user.pass_exp != null || user.acct_exp != null)

    {

        p = document.createElement("h3");

        text = "Notices";

        p.appendChild(document.createTextNode(text));

        notices.appendChild(p);

        if (user.pass_exp != null)

        {

            p = document.createElement("p");

            /* TODO: Nice passexp */

            var pass_exp = user.pass_exp.toString()

            text = "Your password will expire on " + pass_exp

                + ". You should change it before then to avoid having your "

                + "account disabled.";

            p.appendChild(document.createTextNode(text));

            notices.appendChild(p);

        }

        if (user.acct_exp != null)

        {

            p = document.createElement("p");

            /* TODO: Nice acct_exp */

            var acct_exp = user.acct_exp.toString()

            text = "Your IVLE account will expire on " + acct_exp + ".";

            p.appendChild(document.createTextNode(text));

            notices.appendChild(p);

        }

    }

}

/* Sets the "result" text.

 * iserror (bool) determines the styling.

 */

function set_result(text, iserror)

{

    var p = document.getElementById("result");

    dom_removechildren(p);

    p.appendChild(document.createTextNode(text));

    if (iserror)

        p.setAttribute("class", "error");

    else

        p.removeAttribute("class");

}

/* Writes the settings to the server.

 * Returns false. */

function save_settings()

{

    /* Button (input) elements */

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

    /* Textbox (input) elements */

    try

    {

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

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

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

    }

    catch (e)

    {

        var newpass = null;

        var repeatpass = null;

    }

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

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

    /* Check */

    oldpassval = oldpass == null ? null : oldpass.value;

    newpassval = newpass == null ? null : newpass.value;

    repeatpassval = repeatpass == null ? null : repeatpass.value;

    nickval = nick.value;

    emailval = email.value;

    /* Clear the password boxes, even if there are errors later */

    try

    {

        newpass.value = "";

        repeatpass.value = "";

    }

    catch (e)

    {

    }

    if (nickval == "")

    {

        set_result("Display name is empty.", true);

        return false;

    }

    if (newpassval != repeatpassval)

    {

        set_result("Passwords do not match.", true);

        return false;

    }

    /* Disable the heavy-duty supercolliding super button */

    save.setAttribute("disabled", "disabled");

    save.setAttribute("value", "Saving...");

    var callback = function(xhr)

    {

        save.removeAttribute("disabled");

        save.setAttribute("value", "Save");

        if (xhr.status == 200)

        {

            set_result("Successfully updated details.");

            user_data.nick = nickval;

            user_data.email = emailval;

            /* Now a little hack - update the user's nick display

             * in the heading bar, so they are sure it has been changed.

             */

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

            dom_removechildren(usernick);

            usernick.appendChild(document.createTextNode(nickval));

        }

        else if (xhr.getResponseHeader("X-IVLE-Action-Error"))

        {

            set_result(decodeURIComponent(xhr.getResponseHeader(

                                     "X-IVLE-Action-Error").toString()), true);        

        }

        else

        {

            set_result("There was a problem updating the details."

                + " Your changes have not been saved.", true);

        }

    }

    data = {

        "login": user_data.login,

        "nick": nickval,

        "email": emailval,

        "oldpass": oldpassval,

    }

    if (newpassval != null && newpassval != "")

        data['password'] = newpassval;

    ajax_call(callback, "userservice", "update_user", data, "POST");

    return false;

}