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 || {};

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

    // shortcuts

    var bb = root.Backbone;

    // logging

    var logger = new snf.logging.logger("SNF-VIEWS");

    var debug = _.bind(logger.debug, logger);

    views.NetworkConnectVMsOverlay = views.Overlay.extend({

        title: "Connect machine",

        overlay_id: "overlay-select-vms",

        content_selector: "#network-vms-select-content",

        css_class: "overlay-info",

        initialize: function() {

            views.NetworkConnectVMsOverlay.__super__.initialize.apply(this);

            this.list = this.$(".vms-list ul");

            this.empty_message = this.$(".empty-message");

            // flag for submit handler to avoid duplicate bindings

            this.submit_handler_set = false;

        },

        init_handlers: function() {

            var self = this;

            this.list.find("li").click(function(){

                $(this).toggleClass("selected");

            });

            if (!this.submit_handler_set) {

                // avoid duplicate submits

                this.el.find(".create").click(_.bind(function() {

                    this.submit();

                }, this));

                this.submit_handler_set = true;

            }

        },

        reset: function() {

            this.list.find("li").remove();

        },

        beforeOpen: function() {

            this.reset();

            this.update_layout();

        },

        vm: function(vm) {

            if (vm.id) { var id = vm.id } else {var id = vm}

            return this.list.find(".vm-" + id);

        },

        get_selected: function() {

            return this.list.find(".selected").map(function() {return $(this).data('vm')})

        },

        update_layout: function() {

            if (this.vms.length == 0) {

                this.empty_message.show();

            } else {

                this.empty_message.hide();

            }

            _.each(this.vms, _.bind(function(vm){

                var html = '<li class="vm option options-object vm-{0}">' +

                           '<div class="options-object-cont">' +

                           '{2}' + 

                           '<span class="title">{1}</span>' + 

                           '<span class="value">{3}</span></div>' + 

                           '</li>';

                var el = $(html.format(vm.id, 

                                       util.truncate(_.escape(vm.get("name")), 23), 

                                       snf.ui.helpers.vm_icon_tag(vm, "small", {'class':'os'}),

                                       _.escape(vm.get_os())

                                      ))

                el.data({vm:vm, vm_id:vm.id})

                this.list.append(el);

                vm.bind("remove", function(){ el.remove()})

                vm.bind("change:name", function(i,v){el.find(".title").text(v)})

            }, this));

            this.init_handlers();

            this.set_selected();

        },

        set_selected: function() {

            _.each(this.selected, _.bind(function(el){

                this.vm(el).addClass("selected");

            }, this));

        },

        show_vms: function(network, vms, selected, callback) {

            this.network = network;

            this.reset();

            this.set_subtitle(network.escape("name"));

            this.vms = vms;

            if (!synnefo.config.network_allow_duplicate_vm_nics) {

                this.vms = _.filter(this.vms, function(vm) {

                    return !vm.connected_to(this.network);

                }, this);

            }

            this.selected = selected;

            this.cb = callback;

            this.show();

        },

        submit: function() {

            this.cb(this.get_selected());

        }

    })

    views.NetworkActionsView = views.View.extend({

        initialize: function(view, net, el, opts) {

            this.parent = view

            this.network = net;

            this.el = el;

            this.actions = this.$(".actions");

            this.selected = undefined;

            this.destroy = this.$(".actions .destroy a");

            this.connect = this.$(".actions .add");

            this.init_handlers();

            this.update_layout();

        },

        init_handlers: function() {

            this.connect.click(_.bind(function(e){

                e.preventDefault();

            }))

        },

        update_layout: function() {

        }

    });

    views.NetworkCreateView = views.Overlay.extend({

        view_id: "network_create_view",

        content_selector: "#networks-create-content",

        css_class: 'overlay-networks-create overlay-info',

        overlay_id: "network-create-overlay",

        title: "Create new private network",

        subtitle: "Networks",

        initialize: function(options) {

            views.NetworkCreateView.__super__.initialize.apply(this);

            this.create_button = this.$("form .form-action.create");

            this.text = this.$(".network-create-name");

            this.form = this.$("form");

            this.dhcp_select = this.$("#network-create-dhcp");

            this.type_select = this.$("#network-create-type");

            this.subnet_select = this.$("#network-create-subnet");

            this.subnet_custom = this.$("#network-create-subnet-custom");

            this.dhcp_form = this.$("#network-create-dhcp-fields");

            this.subnet_select.find(".subnet").remove();

            _.each(synnefo.config.network_suggested_subnets, function(subnet){

                this.subnet_select.append($('<option value='+subnet+' class="subnet">'+subnet+'</option>'));

            }, this);

            this.type_select.find(".subnet").remove();

            _.each(synnefo.config.network_available_types, function(name, value){

                this.type_select.append($('<option value='+value+' class="subnet">'+name+'</option>'));

            }, this);

            if (_.keys(synnefo.config.network_available_types).length <= 1) {

                this.type_select.closest(".form-field").hide();

            }

            this.check_dhcp_form();

            this.init_handlers();

        },

        reset_dhcp_form: function() {

          this.subnet_select.find("option")[0].selected = 1;

          this.subnet_custom.val("");

        },

        check_dhcp_form: function() {

            if (this.dhcp_select.is(":checked")) {

                this.dhcp_form.show();

            } else {

                this.dhcp_form.hide();

            }

            if (this.subnet_select.val() == "custom") {

                this.subnet_custom.show();

            } else {

                this.subnet_custom.hide();

            }

        },

        init_handlers: function() {

            this.dhcp_select.click(_.bind(function(e){

                this.check_dhcp_form();

                this.reset_dhcp_form();

            }, this));

            this.subnet_select.change(_.bind(function(e){

                this.check_dhcp_form();

                if (this.subnet_custom.is(":visible")) {

                    this.subnet_custom.focus();

                }

            }, this));

            this.create_button.click(_.bind(function(e){

                this.submit();

            }, this));

            this.form.submit(_.bind(function(e){

                e.preventDefault();

                this.submit;

                return false;

            }, this))

            this.text.keypress(_.bind(function(e){

                if (e.which == 13) {this.submit()};

            },this))

        },

        submit: function() {

            if (this.validate()) {

                this.create();

            };

        },

        validate: function() {

            // sanitazie

            var t = this.text.val();

            t = t.replace(/^\s+|\s+$/g,"");

            this.text.val(t);

            if (this.text.val() == "") {

                this.text.closest(".form-field").addClass("error");

                this.text.focus();

                return false;

            } else {

                this.text.closest(".form-field").removeClass("error");

            }

            if (this.dhcp_select.is(":checked")) {

                if (this.subnet_select.val() == "custom") {

                    var sub = this.subnet_custom.val();

                    sub = sub.replace(/^\s+|\s+$/g,"");

                    this.subnet_custom.val(sub);

                    if (!synnefo.util.IP_REGEX.exec(this.subnet_custom.val())) {

                        this.subnet_custom.closest(".form-field").prev().addClass("error");

                        return false;

                    } else {

                        this.subnet_custom.closest(".form-field").prev().removeClass("error");

                    }

                };

            }

            return true;

        },

        get_next_available_subnet: function() {

            var auto_tpl = synnefo.config.automatic_network_range_format;

            if (!auto_tpl) {

                return null

            }

            var index = 0;

            var subnet = auto_tpl.format(index);

            var networks = synnefo.storage.networks;

            var check_existing = function(n) { return n.get('cidr') == subnet }

            while (networks.filter(check_existing).length > 0 && index <= 255) {

                index++;

                subnet = auto_tpl.format(index); 

            }

            return subnet;

        },

        create: function() {

            this.create_button.addClass("in-progress");

            var name = this.text.val();

            var dhcp = this.dhcp_select.is(":checked");

            var subnet = null;

            var type = this.type_select.val();

            if (dhcp) {

                if (this.subnet_select.val() == "custom") {

                    subnet = this.subnet_custom.val();

                } else if (this.subnet_select.val() == "auto") {

                    subnet = this.get_next_available_subnet()

                } else {

                    subnet = this.subnet_select.val();

                }

            }

            snf.storage.networks.create(name, type, subnet, dhcp, _.bind(function(){

                this.hide();

            }, this));

        },

        beforeOpen: function() {

            this.create_button.removeClass("in-progress")

            this.text.closest(".form-field").removeClass("error");

            this.text.val("");

            this.text.show();

            this.text.focus();

            this.subnet_custom.val("");

            this.subnet_select.val("auto");

            this.dhcp_select.attr("checked", true);

            this.type_select.val(_.keys(synnefo.config.network_available_types)[0]);

            this.check_dhcp_form();

        },

        onOpen: function() {

            this.text.focus();

        }

    });

    views.NetworkNICView = views.View.extend({

        initialize: function(nic, parent, firewall_controls, el) {

            this.firewall_controls = firewall_controls || false;

            this.nic = nic;

            this.vm = nic.get_vm();

            // parent view di

            this.parent = parent;

            // TODO make it better

            this.el = el || this.parent.get_nic_view(nic);

            this.init_layout();

            this.update_layout();

            this.disconnect = this.$(".action-disconnect");

            this.confirm_el = this.$(".confirm_single");

            this.cancel = this.$("button.no");

            this.confirm = this.$("button.yes");

            this.details = this.$(".action-details");

            this.vm_connect = this.$(".machine-connect");

            this.actions = this.$(".net-vm-actions");

            this.init_handlers();

            this.connect_overlay = new views.VMConnectView();

            this.firewall_view = undefined;

            if (this.firewall_controls) {

                this.firewall_view = new views.FirewallEditView(this.nic, this.parent.network, this);

            }

        },

        reset_all_net_actions: function(act_types) {

            synnefo.storage.networks.each(function(n){

                var actions = n.get('actions');

                _.each(act_types, function(type){

                    actions.remove_all(type);

                })

            })

        },

        init_handlers: function() {

            if (!this.parent.network.is_public()) {

                this.disconnect.click(_.bind(function(e){

                    e.preventDefault();

                    this.reset_all_net_actions(['destroy','disconnect']);

                    this.parent.network.get("actions").remove_all("disconnect");

                    this.parent.network.get("actions").add("disconnect", this.nic.id);

                    this.parent.network.get("actions").remove("destroy");

                }, this));

                this.cancel.click(_.bind(function(e){

                    this.parent.network.get("actions").remove("disconnect", this.nic.id);

                    e.preventDefault()

                }, this));

                this.confirm.click(_.bind(function(e){

                    e.preventDefault()

                    this.disconnect_nic();

                    this.confirm_el.hide();

                    this.disconnect.removeClass("selected");

                    this.actions.find("a").removeClass("visible");

                }, this));

                snf.ui.main.bind("view:change", _.bind(function(v) {

                    if (v == "networks" ){ return }

                    this.confirm_el.hide();

                    this.disconnect.removeClass("selected");

                }, this));

                this.$(".remove-icon").click(_.bind(function(){

                    this.reset_all_net_actions(['destroy','disconnect']);

                    this.parent.network.get("actions").remove_all("disconnect");

                    this.parent.network.get("actions").add("disconnect", this.nic.id);

                    this.parent.network.get("actions").remove("destroy");

                }, this));

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

                    this.connect_overlay.show(this.vm);

                }, this));

                this.parent.network.bind("change:actions", _.bind(function(model, action){

                    if (this.parent.network.get("actions").contains("disconnect", this.nic.id)) {

                        this.confirm_disconnect();

                    } else {

                        this.cancel_disconnect();

                    }

                }, this));

            }

            var vm = this.vm;

            this.details.click(function(e){

                e.preventDefault();

                snf.ui.main.show_vm_details(vm);

            });

        },

        cancel_disconnect: function() {

            this.confirm_el.hide();

            this.disconnect.removeClass("selected");

            this.$(".net-vm-actions a").removeClass("visible");

        },

        confirm_disconnect: function() {

            this.confirm_el.show();

            this.disconnect.addClass("selected");

            this.$(".net-vm-actions a").addClass("visible");

        },

        init_layout: function() {

            if (!this.firewall_controls) { return };

        },

        update_layout: function() {

            this.$(".vm-name").text(snf.util.truncate(this.vm.get("name"), 40));

            this.$("img.logo").attr("src", ui.helpers.vm_icon_path(this.vm, "medium"));

            if (this.firewall_view) {

                this.$(".ipv4-text").text(this.nic.get_v4_address());

                this.$(".ipv6-text").text(this.nic.get_v6_address());

            }

            if (this.firewall_view) {

                this.firewall_view.update_layout();

            }

            if (!this.firewall_view) {

                this.$(".ip4-container").hide();

                this.$(".ip6-container").hide();

                if (this.nic.get("ipv4")) {

                    this.$(".ipv4-text").text(this.nic.get_v4_address());

                    this.$(".ip4-container").show();

                    this.$(".machine-connect .content").hide();

                } else if (this.nic.get("ipv6")) {

                    this.$(".ipv6-text").text(this.nic.get_v6_address());

                    this.$(".ip6-container").show();

                    this.$(".machine-connect .content").hide();

                } else {

                    this.$(".machine-connect .content").show();

                }

            } else {

            }

        },

        disconnect_nic: function() {

            this.$("a.selected").removeClass("selected");

            this.nic.get_network().remove_nic(this.nic);

        }

    })

    views.NetworkModelRenameView = views.View.extend({

        initialize: function(parent, network) {

            this.parent = parent;

            this.network = network;

            this.el = this.parent.el.find(".name-div");

            this.icon = this.$(".rename-network");

            this.save = this.$("span.save");

            this.cancel = this.$("span.cancel");

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

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

            this.editing = false;

            this.init_handlers();

            this.update_layout();

        },

        init_handlers: function() {

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

                this.editing = true;

                this.update_layout();

            }, this));

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

                this.editing = false;

                this.update_layout();

            }, this));

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

                this.submit();

            }, this))

        },

        submit: function() {

            var value = _(this.input.val()).trim();

            if (value == "") { return }

            this.network.rename(value, _.bind(function(){

                this.editing = false;

                this.update_layout();

            }, this));

        },

        create_input: function() {

            this.input = $('<input type="text" class="network-rename-input" />');

            this.input.val(this.network.get("name"));

            this.el.append(this.input);

            this.input.focus();

            this.input.bind("keydown", _.bind(function(ev){

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

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

                if (ev.keyCode == 27) {this.editing = false; this.update_layout()};

            }, this));

        },

        remove_input: function() {

            if (!this.input) { return }

            this.input.remove();

        },

        update_layout: function() {

            if (this.editing) {

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

                this.icon.hide();

                this.buttons.show();

                this.create_input();

                this.name.hide();

            } else {

                this.buttons.hide();

                this.remove_input();

                this.name.show();

                this.icon.show();

            }

        }

    })

    views.FirewallEditView = views.View.extend({

        initialize: function(nic, network, parent) {

            this.parent = parent;

            this.vm = nic.get_vm();

            this.nic = nic;

            this.network = network;

            this.el = this.parent.el;

            views.FirewallEditView.__super__.initialize.apply(this);

            // elements

            this.toggler = this.$(".firewall-toggle");

            this.indicator = this.$(".machines-label span");

            this.progress = this.$(".network-progress-indicator");

            this.content = this.$(".firewall-content");

            this.inputs = this.$("input[type=radio]");

            this.labels = this.$("span.checkbox-legends, label.checkbox-legends");

            this.apply = this.$(".firewall-apply");

            this.$(".firewall-content").hide();

            this.$(".firewall-content input[type=radio]").attr("name", "firewall-opt-for-{0}".format(this.vm.id))

            var mode = this.vm.get_firewall_profile();

            this.$(".firewall-content input[value={0}]".format(mode)).attr("checked", true);

            this.init_handlers();

            this.update_layout();

            var self = this;

            this.nic.bind("change:pending_firewall_sending", function(nic, value) {

                if (value) {

                    self.apply.addClass("in-progress");       

                    self.progress.show();

                } else {

                    self.apply.removeClass("in-progress");       

                    self.progress.hide();

                    self.toggler.click();

                }

            });

            this.nic.bind("change:firewallProfile", function(nic){

                self.update_layout();

                self.reset_value();

            })

        },

        _get_selected: function() {

            return this.inputs.filter(":checked");

        },

        reset_selected: function() {

        },

        submit: function() {

        },

        reset_value: function() {

            this.inputs.filter("[value={0}]".format(

              this.nic.get('firewallProfile'))).attr("checked", true);

        },

        init_handlers: function() {

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

                cont = this.content;

                if (cont.is(":visible")) {

                    this.hide_firewall();

                    this.reset_value();

                } else {

                    this.show_firewall();

                }

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

            }, this))

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

                this.nic.set_firewall(this.value());

            }, this))

            this.inputs.change(_.bind(function(){

                this.update_selected();

            }, this))

            var self = this;

            this.$(".checkbox-legends").click(function(el) {

                var el = $(this);

                el.prev().click();

                self.update_selected();

            })

        },

        update_selected: function() {

            this.update_layout();

        },

        show_firewall: function() {

            this.content.slideDown(100, function(){$(window).trigger("resize")});

            this.toggler.addClass("open");

        },

        hide_firewall: function() {

            this.content.slideUp(100, function(){$(window).trigger("resize")});

            this.toggler.removeClass("open");

        },

        value: function() {

            return this._get_selected().val();

        },

        update_layout: function() {

            if (this.value() == this.vm.get_firewall_profile()) {

                this.apply.hide();

            } else {

                this.apply.show();

            }

            var profile = this.vm.get_firewall_profile();

            if (this.vm.has_firewall(this.network.id)) {

                this.$(".firewall-toggle .label span").text("On");

                this.$(".firewall-toggle .label span").removeClass("firewall-off");

                this.$(".firewall-toggle .label span").addClass("firewall-on");

            } else {

                this.$(".firewall-toggle .label span").text("Off");

                this.$(".firewall-toggle .label span").removeClass("firewall-on");

                this.$(".firewall-toggle .label span").addClass("firewall-off");

            }

            this.$("span.checkbox-legends").removeClass("current");

            this.inputs.filter("[value={0}]".format(profile)).next().addClass("current");

        }

    })

    views.NetworkModelView = views.View.extend({

        firewall: false,

        initialize: function(network, view) {

            this.parent_view = view;

            this.network = network;

            this.main_view_id = this.main_view_id ? this.main_view_id : "networks_view_" + network.id;

            this.is_public = network.is_public();

            this.init_nics_handlers();

            this.view_id = "networks_view_" + network.id;

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

            this.nics_views = {};

            this.el = this.create_el();

            // element helpers

            this.nics_list = this.$(".machines-list");

            this.nics_list_toggler = this.$(".list-toggle");

            this.init_handlers();

            this.init_toggler_handlers();

            this.update_nics();

            this.update_layout();

            this.hide_nics_list();

            this.nics_list.hide();

            this.rename_view = undefined;

            if (!this.network.is_public()) {

                // allow network rename for non public networks only

                this.rename_view = new views.NetworkModelRenameView(this, network);

            }

            var self = this;

            this.network.bind('change:status', function() {

                self.update_layout();

            });

        },

        init_nics_handlers: function() {

            storage.nics.bind("add", _.bind(this.nic_added_handler, this, "add"));

            storage.nics.bind("change", _.bind(this.nic_changed_handler, this, "change"));

            storage.nics.bind("reset", _.bind(this.nic_changed_handler, this, "reset"));

            storage.nics.bind("remove", _.bind(this.nic_removed_handler, this, "remove"));

        },

        show_nics_list: function() {

            //if (this.nics_empty()) { return }

            var self = this;

            this.nics_list_toggler.addClass("open");

            this.nics_list.slideDown(function(){

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

            }).closest(".network").addClass("expand");

            this.$(".empty-network-slot").slideDown();

            this.nics_visible = true;

        },

        hide_nics_list: function() {

            this.nics_list_toggler.removeClass("open");

            this.nics_list.slideUp(function(){

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

            }).closest(".network").removeClass("expand");

            this.$(".empty-network-slot").slideUp();

            this.nics_visible = false;

        },

        init_toggler_handlers: function() {

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

                if (this.nics_list.is(":visible")) {

                    this.hide_nics_list();

                } else {

                    this.show_nics_list();

                    this.fix_left_border();

                }

            }, this));

            $(window).bind("resize", _.bind(function() {

                this.fix_left_border();

            }, this));

        },

        init_handlers: function() {

            var self = this;

            this.$(".action-add").click(_.bind(function(e){

                e.preventDefault();

                this.network.get("actions").remove("destroy");

                this.show_connect_vms();

            }, this))

            this.$(".add-icon").click(_.bind(function(e){

                e.preventDefault();

                this.show_connect_vms();

            }, this))

            this.$(".net-actions .destroy a").click(_.bind(function(e){

                e.preventDefault();

                synnefo.storage.networks.each(function(n) {

                    n.get('actions').remove_all("disconnect");

                    if (!synnefo.config.network_allow_multiple_destory) {

                        n.get('actions').remove_all("destroy");

                    }

                });

                self.network.get("actions").add("destroy");

                self.network.get("actions").remove_all("disconnect");

            }, this));

            self.network.bind("change:actions", _.bind(function(net, action) {

                if (this.network.get("actions").contains("destroy")) {

                    this.confirm_destroy();

                } else {

                    this.cancel_destroy();

                }

            }, this));

            // reset pending destory action after successful removal

            self.network.bind("remove", _.bind(function(net){

                net.get("actions").remove_all("destroy");

            }));

            this.$(".net-actions button.no").click(function(e){

                e.preventDefault();

                self.network.get("actions").remove("destroy");

            });

            this.$(".net-actions button.yes").click(function(e){

                e.preventDefault();

                var el = $(this);

                el.closest(".confirm_single").hide();

                el.parent().parent().find(".selected").removeClass("selected");

                self.network.call('destroy', {}, function(){

                    el.closest(".confirm_single").removeClass("in-progress");

                });

                el.closest(".confirm_single").addClass("in-progress");

            });

            snf.ui.main.bind("view:change", _.bind(function(v) {

                if (v == "networks" ){ return }

                this.$(".confirm_single").hide();

                this.$("a.selected").removeClass("selected");

            }, this));

            this.$(".empty-network-slot").hide();

        },

        show_connect_vms: function() {

            this.$(".confirm_single").hide();

            this.$("a.selected").removeClass("selected");

            var vms = this.network.get_connectable_vms();

            this.parent_view.connect_machines_view.show_vms(this.network,

                                                            vms, [], 

                                                            _.bind(this.connect_vms, this));

        },

        cancel_destroy: function() {

            this.$(".net-actions .destroy .confirm_single").hide();

            this.$(".net-actions .destroy a.selected").removeClass("selected");

            this.$(".net-actions a").removeClass("visible");

        },

        confirm_destroy: function() {

            this.$(".destroy .confirm_single").show();

            this.$(".destroy a").addClass("selected");

            this.$(".net-actions a").addClass("visible");

        },

        connect_vms: function(vms) {

            _.each(vms, _.bind(function(vm){

                this.network.add_vm(vm);

            }, this));

            this.parent_view.connect_machines_view.hide();

        },

        create_el: function() {

            return this.$(this.tpl).clone().attr("id", this.main_view_id);

        },

        get_nic_id: function(nic) {

            return this.nic_id_tpl.format(nic.id);

        },

        get_nic_view: function(nic) {

            return $(this.get_nic_id(nic));

        },

        nic_in_network: function(nic) {

          return nic.get_network().id == this.network.id;

        },

        nic_added_handler: function(action, nic) {

            if (!this.nic_in_network(nic)) { return };

            this.add_or_update_nic(nic);

            this.update_layout();

            this.fix_left_border();

        },

        nic_changed_handler: function(action, nics, model, changes) {

            var nics = nics || [];

            // reset or update

            if (action == "reset") {

                nics = nics;

            } else {

                if (!_.isArray(nics)) {

                    nics = [nics]

                }

            }

            _.each(nics, _.bind(function(nic) {

                if (!this.nic_in_network(nic)) { return };

                this.add_or_update_nic(nic);

            }, this));

            this.update_layout();

        },

        nic_removed_handler: function(action, nic, model) {

            if (!this.nic_in_network(nic)) { return };

            this.fix_left_border();

            this.remove_nic(nic);

            this.update_layout();

        },

        remove_nic: function(nic) {

            var nic_view = this.get_nic_view(nic);

            if (nic_view.length) {

                nic_view.remove();

                try {

                    delete this.nics_views[nic.id]

                } catch (err) {

                }

            }

        },

        create_nic_view: function(nic) {

            var nic_el = $(this.nic_tpl).clone().attr({

                id: this.get_nic_id(nic).replace("#","")

            });

            this.nics_list.append(nic_el);

            this.post_nic_add(nic);

            if (!this.nics_views[nic.id]) {

                var nic_view = this.nics_views[nic.id] = new views.NetworkNICView(nic, this, this.firewall, nic_el);

            }

        },

        add_or_update_nic: function(nic) {

            if (!nic) { return };

            var nic_el = this.get_nic_view(nic);

            var nic_view = this.nics_views[nic.id];

            if (nic_el.length == 0) {

                nic_view = this.create_nic_view(nic);

            }

            if (nic_view) { nic_view.update_layout() };

            this.update_nic(nic);

            this.post_nic_update(nic);

        },

        update_nic: function(vm){},

        post_nic_add: function(vm){},

        post_nic_update: function(vm){},

        get_nics: function() {

          return this.network.get_nics();

        },

        update_nics: function(nics) {

            if (!nics) { nics = this.get_nics() };

            _.each(nics, _.bind(function(nic){

                this.add_or_update_nic(nic);

            }, this));

        },

        check_empty_nics: function() {

            if (this.get_nics().length == 0) {

                this.hide_nics_list();

            }

        },

        nics_empty: function() {

            return this.get_nics().length == 0;

        },

        remove: function() {

            $(this.el).remove();

        },

        get_name: function() {

          var net_name = this.network.get('name');

          if (net_name == "public") { net_name = "Internet" };

          return net_name;

        },

        update_layout: function() {

            // has vms ???

            this.check_empty_nics();

            // is expanded ???

            //

            // whats the network status ???

            //

            this.$(".machines-count").text(this.get_nics().length);

            var net_name = this.get_name();

            this.$(".name-div span.name").text(net_name);

            if (this.rename_view) {

                this.rename_view.update_layout();

            }

            this.$(".net-status").text(this.network.state_message());

            if (this.network.in_progress())  {

                this.$(".spinner").show();

                this.$(".network-indicator").addClass("in-progress");

            } else {

                this.$(".spinner").hide();

                this.$(".network-indicator").removeClass("in-progress");

            }

            if (this.network.get('state') == 'PENDING') {

                this.el.addClass("pending");

            } else {