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

/* IVLE

 * 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: SpecialHome (File Browser, client)

 * Author: David Coles

 * Date: 23/7/2008

 */

/* This module implements the functionality to lay out a special home directory 

 * view on top of the normal listing

 */

/* The name of the personal file directory */

PERSONALDIR="mywork"

/* LAYOUT FUNCTIONS */

/** Present home directory 

 */

function home_listing(listing, subjects, path)

{

    /* Nav through the top-level of the JSON to the actual listing object. */

    var listing = listing.listing;

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

    var specialhomediv;

    var h2;

    var h3;

    var ul;

    var li;

    var div;

    /* Only show special headings if we get subject listings */

    if (subjects != null)

    {

        /* Wrap all this "special" stuff in a div, for styling purposes */

        specialhomediv = document.createElement("div");

        specialhomediv.setAttribute("id", "specialhome");

        filetablediv.appendChild(specialhomediv);

        /* SUBJECTS Section

        /* Create the header row */

        if (subjects.length > 0)

        {

            h2 = dom_make_text_elem("h2", "Subjects");

            specialhomediv.appendChild(h2);

        }

        /* Create the contents */

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

        {

            var subject = subjects[i];

            var subjpath = subject.subj_short_name;

            // Header

            h3 = dom_make_text_elem("h3", subject.subj_name);

            specialhomediv.appendChild(h3);

            /* Print the file listing */

            ul = document.createElement("ul");

            // Stuff

            ul.appendChild(make_subject_item(subjpath,

                path_join("users", username, subjpath), PERSONALDIR,

                "Your own files in this subject"));

            // Groups

            var groups = subject.groups;

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

            {

                var group = subject.groups[j];

                ul.appendChild(make_subject_item(subjpath,

                    path_join("groups", subject.subj_short_name + "_" +

                              subject.year + "_" + subject.semester + "_" +

                              group.name),

                    group.name,

                    "This group's files in this subject"));

            }

            specialhomediv.appendChild(ul);

            /* Remove it from listing */

            if (subject.subj_short_name in listing)

                delete listing[subject.subj_short_name];

        }

        /* FIXME: Old Subjects? */

        /* STUFF Section -- For the stuff directory */

        /* Create the header */

        h2 = dom_make_text_elem("h2", "Stuff");

        specialhomediv.appendChild(h2);

        /* Create the contents */

        ul = document.createElement("ul");

        ul.appendChild(make_subject_item("",

              path_join("users", username, "stuff"), "stuff",

              "Your own files not related to a subject"));

        specialhomediv.appendChild(ul);

        /* Remove stuff from the listing */

        if ("stuff" in listing)

            delete listing["stuff"];

        /* JUNK Section -- All the rest */

        /* Create the header row */

        if (obj_length(listing) > 0)

        {

            h2 = dom_make_text_elem("h2", "Junk");

            specialhomediv.appendChild(h2);

            handle_dir_listing(path, listing);

        }

    }

    else

    {

        handle_dir_listing(path, listing);

    }

}

/* Does an series of AJAX requests to find out the properties of this folder 

 * and then updates the folder view

 */

function make_subject_item(path, repopath, name, description)

{

    // Create the temporary item

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

    var span;

    li.setAttribute("class", "listing-loading");

    li.appendChild(dom_make_text_elem("span", name, description));

    span = dom_make_text_elem("loading...");

    span.setAttribute("class","status");

    li.appendChild(span);

    // Set the callback function to update when we get the real details

    var callback = function(response)

    {

        var sublisting = decode_response(response);

        dom_removechildren(li);

        li.setAttribute("class", "listing-dir");

        // If we could find the file status...

        if (sublisting != null)

        {

            var thisdir = sublisting.listing['.'];

            var versioned = ("svnstatus" in thisdir) && (thisdir.svnstatus != "unversioned");

            if (versioned)

            {

                // Default: Just offer a link to the directory

                li.appendChild(dom_make_link_elem("span", name, description,

                    app_path(this_app, username, path, name)));

            }

            else

            {

                // Blocked: Offer to rename the directory

                li.appendChild(dom_make_text_elem("span", name, description));

                span = dom_make_text_elem("span", " (blocked) ",

                      "Another file or directory is in the way of this directory.");

                span.setAttribute("class", "status");

                li.appendChild(span);

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

                button.addEventListener("click", function(event)

                {

                    action_rename(path_join(path, name));

                },

                false);

                button.setAttribute("type", "button");

                button.setAttribute("value", "Rename");

                span.appendChild(button);

            }

        }

        else

        {

            // Missing: Try to check out or create the repository

            li.appendChild(dom_make_text_elem("span", name, description));

            span = dom_make_text_elem("span", " (missing) ",

                  "This directory does not yet exist.");

            span.setAttribute("class", "status");

            li.appendChild(span);

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

            button.addEventListener("click", function(event)

            {

                li.setAttribute("class", "listing-loading");

                var localpath = path_join(path, name);

                if (create_if_needed(repopath))

                {

                    // Try a checkout

                    do_action("svncheckout", current_path, {"path":

                        [repopath, localpath]});

                }

                else

                {

                    li.setAttribute("class", "listing-dir");

                }

            },

            false);

            button.setAttribute("type", "button");

            button.setAttribute("value", "Checkout");

            span.appendChild(button);

        }

    }

    /* Are we working in a subdirectory or parent? */

    ajax_call(callback, service_app, path_join(username, path, name), {}, "GET");

    return li;

}

function create_if_needed(path)

{

    response = ajax_call(null, service_app, current_path,

            {

                "action": "svnrepostat",

                "path": path

            }, "POST");

    if (response.status == 200)

    {

        return true;

    }

    else if (response.status == 404)

    {

        // Try a mkdir

        r2 = ajax_call(null, service_app, current_path,

                {

                    "action": "svnrepomkdir",

                    "path": path,

                    "logmsg": "Automated creation of '" + path + "' work directory"

                }, "POST");

        if (r2.status == 200)

        {

            return true;

        }

    }

    alert("Error: Could not create Subversion directory");

    return false;

}

/** Finds the length (number of user defined properties) of an object

 */

function obj_length(obj)

{

    length = 0;

    for (prop in obj)

        length++;

    return length;

}