Synnefo

// Copyright 2011 GRNET S.A. All rights reserved.

// 

// Redistribution and use in source and binary forms, with or

// without modification, are permitted provided that the following

// conditions are met:

// 

//   1. Redistributions of source code must retain the above

//      copyright notice, this list of conditions and the following

//      disclaimer.

// 

//   2. Redistributions in binary form must reproduce the above

//      copyright notice, this list of conditions and the following

//      disclaimer in the documentation and/or other materials

//      provided with the distribution.

// 

// THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

// OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

// USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

// AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

// POSSIBILITY OF SUCH DAMAGE.

// 

// The views and conclusions contained in the software and

// documentation are those of the authors and should not be

// interpreted as representing official policies, either expressed

// or implied, of GRNET S.A.

// 

;(function(root){

    // root

    var root = root;

    // setup namepsaces

    var snf = root.synnefo = root.synnefo || {};

    var models = snf.models = snf.models || {}

    var storage = snf.storage = snf.storage || {};

    var ui = snf.ui = snf.ui || {};

    var util = snf.util = snf.util || {};

    var views = snf.views = snf.views || {}

    // shortcuts

    var bb = root.Backbone;

    // handle extended info toggler

    views.VMActionErrorView = views.View.extend({

        initialize: function (vm, view) {

            this.vm = vm;

            this.view = view;

            this.vm_view = this.view.vm(vm);

            this.has_error = false;

            this.error = this.vm_view.find(".action-error");

            this.close = this.vm_view.find(".close-action-error");

            this.show_btn = this.vm_view.find(".show-action-error");

            this.init_handlers();

            this.update_layout();

        },

        init_handlers: function() {

            // action call failed notify the user

            this.vm.bind("action:fail", _.bind(function(args){

                if (this.vm.action_error) {

                    this.has_error = true;

                    var action = "undefined";

                    try {

                        action = _.last(args).error_params.extra_details['Action'];

                    } catch (err) {console.log(err)};

                    this.error.find(".action").text(action);

                    this.error.show();

                }

            }, this));

            // show error overlay

            this.show_btn.click(_.bind(function() {

                if (this.vm.action_error) {

                    this.show_error_overlay(this.vm.action_error);

                }

                this.vm.reset_action_error();

            }, this));

            // user requests to forget about the error

            this.close.click(_.bind(_.bind(function() {

                this.error.hide();

                this.vm.reset_action_error();

            }, this)));

            // hide error message if action fail get reset

            this.vm.bind("action:fail:reset", _.bind(function(){

                this.error.hide();

            }, this));

        },

        show_error_overlay: function(args) {

            var args = util.parse_api_error.apply(util, args);

            // force logout if UNAUTHORIZED request arrives

            if (args.code == 401) { snf.ui.logout(); return };

            var error_entry = [args.ns, args.code, args.message, args.type, args.details, args];

            ui.main.error_view.show_error.apply(ui.main.error_view, error_entry);

        },

        update_layout: function() {

            if (this.vm.action_error) {

                this.error.show();

            }

        }

    });

    // handle extended info toggler

    views.IconInfoView = views.View.extend({

        initialize: function (vm, view) {

            this.vm = vm;

            this.view = view;

            this.vm_view = this.view.vm(vm);

            this.info_toggle = $(".cont-toggler-wrapper.info .toggler", this.vm_view);

            this.ips_toggle = $(".cont-toggler-wrapper.ips .toggler", this.vm_view);

            this.info_el = $("div.info-content.vm-info", this.vm_view);

            this.ips_el = $("div.info-content.ips", this.vm_view);

            this.label = $(".label", this.vm_view);

            this.set_handlers();

        },

        set_handlers: function() {

            this.info_toggle.click(_.bind(function(){

                this.ips_el.slideUp();

                this.ips_toggle.removeClass("open");

                this.info_el.slideToggle();

                this.view.vm(this.vm).toggleClass("light-background");

                if (this.info_toggle.hasClass("open")) {

                    this.info_toggle.removeClass("open");

                    this.vm.stop_stats_update();

                } else {

                    this.info_toggle.addClass("open");

                    this.view.details_views[this.vm.id].update_layout();

                    this.view.tags_views[this.vm.id].update_layout();

                    this.view.stats_views[this.vm.id].update_layout();

                }

                var self = this;

                window.setTimeout(function() {$(self.view).trigger("resize")}, 300);

            }, this));

            this.ips_toggle.click(_.bind(function(){

                if(this.ips_toggle.parent().hasClass("disabled")) {

                  return;

                }

                this.info_el.slideUp();

                this.info_toggle.removeClass("open");

                this.ips_el.slideToggle();

                this.view.vm(this.vm).toggleClass("light-background");

                var self = this;

                if (this.ips_toggle.hasClass("open")) {

                    this.ips_toggle.removeClass("open");

                } else {

                    this.ips_toggle.addClass("open");

                }

                window.setTimeout(function() {$(self.view).trigger("resize")}, 300);

            }, this));

            this.vm_view.find(".stats-report").click(_.bind(function(e){

                e.preventDefault();

                snf.ui.main.show_vm_details(this.vm);

            }, this))

        }

    })

    // rename handler view

    // only icon view contains rename capability

    views.IconRenameView = views.View.extend({

        initialize: function(vm, view) {

            this.vm = vm;

            this.view = view;

            // name container

            this.el = $('div#' + this.view.id_tpl + vm.id + " div.name").get(0);

            // name inline element

            this.name = this.$('span.name');

            // rename button

            this.rename = this.$('span.rename');

            // save button

            this.save = this.$('.save');

            // cancel rename button

            this.cancel = this.$('.cancel');

            // where to place the input field

            this.edit_cont = this.$(".namecontainer");

            // buttons container

            this.buttons = this.$(".editbuttons");

            // current state

            this.renaming = false;

            // init event handlers

            this.set_handlers();

            // paint

            this.update_layout();

            views.IconRenameView.__super__.initialize.call(this);

        },

        // update elements visibility/state

        update_layout: function() {

            // if in renaming state

            if (this.renaming) {

                // if name is hidden we are already in renaming state

                // dont do nothing

                if (this.name.is(":hidden")){return}

                // hide name element to make space for the 

                // text input

                this.name.hide();

                this.rename.hide();

                // show confirm/cancel buttons

                this.buttons.show();

                // create text element

                this.create_input();

            } else {

                // name is visible not in edit mode

                if (this.name.is(":visible")){return}

                this.name.show();

                this.rename.show();

                this.buttons.hide();

                this.remove_input();

            }

        },

        // create rename input field and set appropriate 

        // event handlers

        create_input: function() {

            var self = this;

            this.edit_cont.append('<input class="vm-rename nametextbox" type="text" />');

            this.$('input').val(this.vm.get('name'));

            // give edit focus

            this.$('input').focus();

            // handle enter press

            this.$('input').keydown(function(ev){

                ev.keyCode = ev.keyCode || ev.which;

                if (ev.keyCode == 13) { self.submit(); }

                if (ev.keyCode == 27) { self.renaming = false; self.update_layout(); }

            })

        },

        // remove input element

        remove_input: function() {

            this.$('input').remove();

        },

        // initialize event handlers

        set_handlers: function() {

            var self = this;

            // start rename when rename button is pressed

            this.rename.click(function() {

                self.renaming = true;

                self.update_layout();

            });

            // double click on name

            $(this.el).dblclick(function() {

                self.renaming = true;

                self.update_layout();

            });

            // cancel rename

            this.cancel.click(function() {

                self.renaming = false;

                self.update_layout();

            })

            // apply the rename

            // TODO: check if name is equal than the previous value

            this.save.click(function() {

                self.submit();

            })

        },

        submit: function() {

            var value = _(self.$('input').val()).trim();

            if (value == "") { return };

            this.renaming = false;

            this.vm.rename(self.$('input').val());

            this.update_layout();

        }

    });

    // VM connect interaction view

    views.IconVMConnectView = views.View.extend({

        initialize: function(vm, view) {

            // parent view (single, icon, list)

            this.parent = view;

            this.vm = vm;

            this.el = view.vm(vm);

            this.set_handlers();

            views.IconVMConnectView.__super__.initialize.call(this);

        },

        // set the appropriate handlers

        set_handlers: function() {

            // setup connect handler on vm icon interaction

            var el = this.el;

            var vm = this.vm;

            // element that triggers the connect handler

            var connect = el.find("div.connect-arrow, .logo");

            // connect status handler

            var handler = _.bind(this.connect_handler, {vm:vm, el:el, view:this.parent});

            $(connect).bind({'mouseover': handler, 'mouseleave': handler, 

                            'mousedown': handler, 'mouseup': handler,

                            'click': handler });

            // setup connect arrow display handlers 

            // while hovering vm container

            el.bind("mouseover", function(){

                if (vm.is_connectable()) {

                    el.find(".connect-border").show();

                    el.find(".connect-arrow").show();

                    el.find(".logo").css({cursor:"pointer"});

                } else {

                    el.find(".connect-border").hide();

                    el.find(".connect-arrow").hide();

                    el.find(".logo").css({cursor: "default"});

                }

            }).bind("mouseleave", function(){

                el.find(".connect-border").hide();

                el.find(".connect-arrow").hide();

            });

        },

        // connect arrow interaction handlers

        // BEWARE, this function has different context

        // than the View object itself, see set_vm_handlers

        connect_handler: function(event) {

            // nothing to do if we cannot connect to the vm

            if (!this.vm.is_connectable()) {return}

            var logo = this.el.find(".logo");

            var arrow = this.el.find(".connect-arrow");

            var border = this.el.find(".connect-border");

            // clear icon states

            logo.removeClass('single-image-state1 single-image-state2 single-image-state3 single-image-state4');

            // append the appropriate state class

            switch (event.type) {

                case "mouseover":       

                    logo.addClass('single-image-state4');

                    arrow.addClass('border-hover');

                    break;

                case "mouseleave":

                    logo.addClass('single-image-state1');

                    arrow.removeClass('border-hover');

                    break;

                case "mouseup":

                    logo.addClass('single-image-state4');

                    //this.view.connect_overlay.show(this.vm);

                    break;

                case "mousedown":

                    logo.addClass('single-image-state2');

                    break;

                case "click":

                    //logo.addCLass('single-image-state4');

                    //this.view.connect_to_console(vm);

                    this.view.connect_overlay.show(this.vm);

                    break;

                default:

                    ;

            }

        },

        update_layout: function() {

        }

    });

    // vm metadata subview for icon and single view

    views.VMTagsView = views.View.extend({

        view_id: 'vm_tags',

        // metadata container selector

        el_sel: '.vm-metadata',

        // metadata row template

        tag_tpl: '<span class="tag-item"><span class="key">{0}</span><span class="value">{1}</span></span>',

        // how many tags to show

        tag_limit: 4,

        // truncate options (because container has different size on icon/single views)

        tag_key_truncate: 7,

        tag_value_truncate: 15,

        initialize: function(vm, view, toggle, limit, tag_key_truncate, tag_value_truncate) {

            this.tag_limit = limit || this.tag_limit;

            this.tag_key_truncate = tag_key_truncate || this.tag_key_truncate;

            this.tag_value_truncate = tag_value_truncate || this.tag_value_truncate;

            // does the view toggles the metadata container (single view)

            this.toggle = toggle || false;

            // parent view

            this.parent = view;

            this.vm = vm;

            this.el = this.parent.vm(vm);

            this.view_id = this.view_id + "_" + vm.id;

            // link to raise the metadata manager overlay

            this.link = this.$('a.manage-metadata');

            views.VMTagsView.__super__.initialize.call(this);

            this.set_handlers();

            this.update_layout();

        },

        // set the appropriate handlers

        set_handlers: function() {

            var self = this;

            // show the metadata editor overlay

            this.link.click(_.bind(function(ev) {

                ev.preventDefault();

                this.parent.metadata_view.show(this.vm);

            }, this));

            // tags/ips have show/hide control ? bind events for them

            var self = this;

            if (this.toggle) {

                $(this.el).find(".tags-header").click(_.bind(function(){

                    $(self.el).find(".tags-content").slideToggle(600);

                    var details_toggler = $(this.el).find(".tags-header " +

                                                          ".cont-toggler");

                    if (details_toggler.hasClass("open")) {

                        details_toggler.removeClass("open");

                    } else {

                        details_toggler.addClass("open");

                    }

                }, this));

                $(this.el).find(".tags-header").find(".toggler").removeClass("open");

                $(self.el).find(".tags-content").hide();

            }

        },

        // update metadata container and data

        update_layout: function() {

            // api metadata object

            var meta =  this.vm.get('metadata');

            var i = 0;

            var cont = $(this.el).find(".items");

            // clear existing items

            cont.find(".tag-item").remove();

            // create tag elements

            _.each(meta, function(value, key){

                // respect the limit

                if (i > this.tag_limit) {

                    return;

                }

                // create element

                var new_el = $(this.tag_tpl.format(util.truncate(key, this.tag_key_truncate), 

                                                 util.truncate(": " + _.escape(value), this.tag_value_truncate)));

                // add title attributes, improve accesibility

                // truncated values

                new_el.find("span.key").attr("title", key);

                new_el.find("span.value").attr("title", _.escape(value));

                cont.append(new_el);

            }, this);

        }

    });

    // stats subview for single/icon views

    views.VMStatsView = views.View.extend({

        initialize: function(vm, view, options) {

            if (!options) {options = {}};

            this.vm = vm;

            this.parent = view;

            this.sel = options.el || this.el_sel || ".lower";

            this.el = this.parent.vm(vm).find(this.sel);

            this.selected_stats_period = 'hourly';

            // elements shortcuts

            this.cpu_loading = this.el.find(".cpu-graph .stat-busy");

            this.cpu_error = this.el.find(".cpu-graph .stat-error");

            this.cpu_img = this.el.find(".cpu-graph .stat-img");

            this.net_loading = this.el.find(".network-graph .stat-busy");

            this.net_error = this.el.find(".network-graph .stat-error");

            this.net_img = this.el.find(".network-graph .stat-img");

            this.loading = this.el.find(".stat-busy");

            this.error = this.el.find(".stat-error");

            this.img = this.el.find(".stat-img");

            this.stats_period_options = this.el.find(".stats-select-option");

            // handle stats period option select

            var self = this;

            this.stats_period_options.click(function(){

                // skip if current selection is clicked

                if ($(this).filter(".stats-" + self.selected_stats_period).length) {

                    return

                } else {

                    // identify class

                    var cls = $(this).attr("class");

                    regex = /.*\sstats-(\w+)/;

                    self.set_stats_period(cls.match(regex)[1]);

                }

            });

            // initial state paremeters

            this.stats = this.vm.get("stats");

            // timeseries or bar images ?

            this.stats_type = options.stats_type || "bar";

            views.VMStatsView.__super__.initialize.apply(this, arguments);

            this.set_handlers();

            this.update_layout();

            this.net_loading.show();

            this.net_error.hide();

            this.cpu_loading.show();

            this.cpu_error.hide();

            this.net_img.hide();

            this.cpu_img.hide();

            if (!window.t) {

                window.t = [];

            }

            if (this.parent.menu) {

                window.t[window.t.length] = this;

            }

        },

        set_stats_period: function(period) {

            this.selected_stats_period = period;

            this.update_layout();

        },

        set_handlers: function() {

            // update view state when vm stats update gets triggered

            this.vm.bind("stats:update", _.bind(function(){

                // update the layout

                this.update_layout();

            }, this));

        },

        get_images: function (type, period) {

            var period = period || 'hourly';

            var images;

            if (type == 'bar') {

                images = {'cpu': this.stats.cpuBar, 'net': this.stats.netBar };

            } else {

                images = {'cpu': this.stats.cpuTimeSeries, 

                          'net': this.stats.netTimeSeries };

            }

            if (period == 'weekly' && type != 'bar') {

                if (images.cpu)

                    images.cpu = images.cpu.replace('cpu-ts', 'cpu-ts-w')

                if (images.net)

                    images.net = images.net.replace('net-ts', 'net-ts-w')

            }

            return images

        },

        update_layout: function() {

            if (!this.vm.stats_available) {

                this.loading.show();

                this.img.hide();

                this.error.hide();

            } else {

                this.loading.hide();

                this.stats = this.vm.get("stats");

                var images = this.get_images(this.stats_type, 

                                             this.selected_stats_period)

                if (images.cpu) {

                    this.cpu_img.attr({src:images.cpu}).show();

                    this.cpu_error.hide();

                } else {

                    this.cpu_img.hide();

                    this.cpu_error.show();

                }

                if (images.net) {

                    this.net_img.attr({src:images.net}).show();

                    this.net_error.hide();

                } else {

                    this.net_img.hide();

                    this.net_error.show();

                }

            }

            // update selected stats period

            this.stats_period_options.removeClass("selected");

            this.stats_period_options.filter(".stats-" + this.selected_stats_period).addClass("selected")

            $(window).trigger("resize");

        }

    });

    views.VMDetailsView = views.View.extend({

        view_id: "vm_details",

        el_sel: '.vm-details',

        selectors: {

            'cpu': '.cpu-data',

            'ram': '.ram-data',

            'disk': '.disk-data',

            'image_name': '.image-data',

            'image_size': '.image-size-data'

        },

        initialize: function(vm, view) {

            this.parent = view;

            this.vm = vm;

            this.el = $(this.parent.vm(vm)).find(this.el_sel).get(0);

            this.view_id = "vm_{0}_details".format(vm.id);

            views.VMDetailsView.__super__.initialize.call(this);

            this.resize_actions = this.$(".trigger-resize");

            this.init_handlers();

            this.update_layout();

        },

        init_handlers: function() {

          this.resize_actions.bind('click', _.bind(function(e){

              if (this.vm.in_error_state()) { return }

              ui.main.vm_resize_view.show(this.vm);

          }, this));

        },

        update_layout: function() {

            if (!this.visible() && this.parent.details_hidden) { return };

            var image = this.vm.get_image(_.bind(function(image){

                this.sel('image_name').text(

                  util.truncate(image.get('name'), 17)).attr("title", 

                  image.escape('name'));

                this.sel('image_size').text(

                  image.get_readable_size()).attr('title',

                                                  image.get_readable_size());

            }, this));

            var flavor = this.vm.get_flavor();

            if (!flavor || !image) {

                return;

            }

            this.sel('cpu').text(flavor.get('cpu'));

            this.sel('ram').text(flavor.get('ram'));

            this.sel('disk').text(flavor.get('disk'));

            this.parent.tags_views[this.vm.id].update_layout();

            this.parent.stats_views[this.vm.id].update_layout();

            if (this.parent.details_hidden) {

                this.vm.start_stats_update(true);

            }

        }

    });

    // VMs icon view

    views.IconView = views.VMListView.extend({

        // view id (this could be used to identify 

        // the view object from global context

        view_id: 'vm_icon',

        details_hidden: true,

        el: '#machinesview-icon',

        id_tpl: 'icon-vm-',

        selectors: {

            'vms': '.machine-container',

            'vm': '#icon-vm-',

            'view': '#machinesview-icon',

            'tpl': '#machinesview-icon.standard #machine-container-template',

            'spinner': '.large-spinner',

            'vm_spinner': '#icon-vm-{0} .state .spinner',

            'vm_wave': '#icon-vm-{0} .wave',

            'vm_cont_active': '#machinesview-icon.standard .running',

            'vm_cont_terminated': '#machinesview-icon.standard .terminated'

        },

        reset: function() {},

        // overload show function

        show_view: function() {

            $(this.el).show();

            this.__update_layout();

        },

        post_update_vm: function(vm) {

        },

        // identify vm model instance id based on DOM element

        vm_id_for_element: function(el) {

            return el.attr('id').replace("icon-vm-","");

        },

        // set generic view handlers

        set_handlers: function() {

        },  

        // stuff to do when a new vm has been created.

        // - create vm subviews

        post_add: function(vm) {

            // rename views index

            this.rename_views = this.rename_views || {};

            this.stats_views = this.stats_views || {};

            this.connect_views = this.connect_views || {};

            this.tags_views = this.tags_views || {};

            this.details_views = this.details_views || {};

            this.info_views = this.info_views || {};

            this.action_error_views = this.action_error_views || {};

            this.action_views = this.action_views || {};

            this.ports_views = this.ports_views || {};

            this.action_views[vm.id] = new views.VMActionsView(vm, this, this.vm(vm), this.hide_actions);

            this.rename_views[vm.id] = new views.IconRenameView(vm, this);

            this.stats_views[vm.id] = new views.VMStatsView(vm, this, {el:'.vm-stats'});

            this.connect_views[vm.id] = new views.IconVMConnectView(vm, this);

            this.tags_views[vm.id] = new views.VMTagsView(vm, this);

            this.details_views[vm.id] = new views.VMDetailsView(vm, this);

            this.action_error_views[vm.id] = new views.VMActionErrorView(vm, this);

            var ports_container = this.vm(vm).find(".machine-data");

            var ports_view = new views.VMPortListView({

              collection: vm.ports, 

              container: ports_container,

              parent: this

            });

            this.ports_views[vm.id] = ports_view

            ports_view.show();

            ports_view.el.hide();

            this.info_views[vm.id] = new views.IconInfoView(vm, this);

        },

        // vm specific event handlers

        set_vm_handlers: function(vm) {

        },

        check_terminated_is_empty: function() {

            // hide/show terminated container

            if (this.$(".terminated .machine-container").length == 0) {

                this.$(".terminated").hide()

            } else {

                this.$(".terminated").show()

            }

            $(window).trigger("resize");

        },

        // generic stuff to do on each view update

        // called once after each vm has been updated

        update_layout: function() {

            // TODO: why do we do this ??

            if (storage.vms.models.length > 0) {

                this.$(".running").removeClass("disabled");

            } else {

                this.$(".running").addClass("disabled");

            }

            this.check_terminated_is_empty();

            // FIXME: code from old js api

            this.$("div.separator").show();

            this.$("div.machine-container:last-child").find("div.separator").hide();

            fix_v6_addresses();

        },

        update_status_message: function(vm) {

            var el = this.vm(vm);

            var message = vm.get_status_message();

            if (message) {

                // update bulding progress

                el.find("div.machine-ips").hide();

                el.find("div.build-progress").show();

                el.find("div.build-progress .message").text(util.truncate(message, 42));

                if (vm.in_error_state()) {

                    el.find("div.build-progress .btn").show();

                } else {

                    el.find("div.build-progress .btn").hide();

                }

            } else {

                // hide building progress

                el.find("div.machine-ips").show()

                el.find("div.build-progress").hide();

                el.find("div.build-progress .btn").hide();

            }

        },

        // update vm details

        update_details: function(vm) {

            var el = this.vm(vm);

            // truncate name

            el.find("span.name").text(util.truncate(vm.get("name"), 40));

            el.find('.fqdn').text(vm.get('fqdn') || synnefo.config.no_fqdn_message);

            el.find("div.status").text(STATE_TEXTS[vm.state()]);

            // set state class

            el.find("div.state").removeClass().addClass(views.IconView.STATE_CLASSES[vm.state()].join(" "));

            // os icon

            el.find("div.logo").css({'background-image': "url(" + this.get_vm_icon_path(vm, "medium") + ")"});

            el.removeClass("connectable");

            if (vm.is_connectable()) {

                el.addClass("connectable");

            }

            var status = vm.get("status");

            var state = vm.get("state");

            this.update_status_message(vm);

            icon_state = vm.is_active() ? "on" : "off";

            set_machine_os_image(el, "icon", icon_state, this.get_vm_icon_os(vm));

            // update subviews

            this.rename_views[vm.id].update_layout();

            this.connect_views[vm.id].update_layout();

            this.details_views[vm.id].update_layout();

        },

        post_remove_vm: function(vm) {

            this.check_terminated_is_empty();

            $(window).trigger("resize");

        },

        get_vm_icon_os: function(vm) {

            var os = vm.get_os();

            var icons = window.os_icons || views.IconView.VM_OS_ICONS;

            if (icons.indexOf(os) == -1) {

                os = "unknown";

            }

            return os;

        },

        // TODO: move to views.utils (the method and the VM_OS_ICON vars)

        get_vm_icon_path: function(vm, icon_type) {

            var os = vm.get_os();

            var icons = window.os_icons || views.IconView.VM_OS_ICONS;

            if (icons.indexOf(os) == -1) {

                os = "unknown";

            }

            return views.IconView.VM_OS_ICON_TPLS()[icon_type].format(os);

        }

    })

    views.IconView.VM_OS_ICON_TPLS = function() {

        return {

            "medium": snf.config.machines_icons_url + "medium/{0}-sprite.png",

            "medium2": snf.config.machines_icons_url + "medium/{0}-sprite2.png",

        }

    }

    views.IconView.VM_OS_ICONS = window.os_icons || [];

    views.IconView.STATE_CLASSES = {

        'UNKNOWN':          ['state', 'error-state'],

        'BUILD':            ['state', 'build-state'],

        'REBOOT':           ['state', 'rebooting-state'],

        'STOPPED':          ['state', 'terminated-state'],

        'ACTIVE':           ['state', 'running-state'],

        'ERROR':            ['state', 'error-state'],

        'DELETED':          ['state', 'destroying-state'],

        'DESTROY':          ['state', 'destroying-state'],

        'SHUTDOWN':         ['state', 'shutting-state'],

        'START':            ['state', 'starting-state'],

        'CONNECT':          ['state', 'connecting-state'],

        'DISCONNECT':       ['state', 'disconnecting-state'],

        'RESIZE':           ['state', 'rebooting-state']

    };

})(this);