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;

    var hasKey = Object.prototype.hasOwnProperty;

    views.ListMultipleActions = views.View.extend({

        view_id: "list_actions",

        initialize: function(view) {

            this.parent = view;

            this.el = this.parent.el;

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

            this.set_handlers();

            this.update_layout();

            this.selected_action = undefined;

            this.available_actions = [];

            this.multi_view = synnefo.ui.main.multiple_actions_view;

            this.hovered = false;

            this.update_actions = _.throttle(this.update_actions, 100);

        },

        set_handlers: function() {

            var self = this;

            storage.vms.bind("change:pending_action", function() {

                if (!storage.vms.has_pending_actions()) {

                    self.parent.$(".actions a").removeClass("selected");

                    self.parent.clear_indicators();

                }

            });

            var self = this;

            this.parent.$(".actions a.enabled").live('click', function() {

                self.parent.$(".actions a").removeClass("selected");

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

                self.parent.select_action($(this).attr("id").replace("action-",""));

            });

            this.parent.$(".actions a.enabled").live({

                'mouseenter': function() {

                    self.hovered = true;

                    self.parent.set_indicator_for($(this).attr("id").replace("action-",""));

                }, 

                'mouseleave': function() {

                    self.hovered = false;

                    self.parent.clear_indicators();

                }

            });

        },

        update_actions: function() {

            actions = undefined;

            this.available_actions = [];

            _.each(this.parent.get_selected_vms(), function(vm) {

                if (!actions) {

                    actions = vm.get_available_actions();

                    return;

                }

                actions = _.intersection(actions, vm.get_available_actions());

            });

            this.available_actions = actions;

            this.$(".actions a").removeClass("enabled");

            _.each(this.available_actions, _.bind(function(name){

                this.$("#action-" + name).addClass("enabled");

            }, this))

        },

        update_selected: function() {

            this.$("tr").removeClass("checked");

            this.$("tr input:checked").parent().parent().addClass("checked");

        },

        update_layout: function() {

            this.update_actions();

            this.update_selected();

        }

    });

    // VMs list view

    views.ListView = views.VMListView.extend({

        // view id (this could be used to identify 

        // the view object from global context

        view_id: 'vm_list',

        el: '#machinesview-list',

        id_tpl: 'list-vm-',

        link_id_tpl: 'list-vm-at-',

        hide_actions: false,

        selectors: {

            'vms': '.list-container',

            'vm': '#list-vm-',

            'view': '#machinesview-list',

            'tpl': '.list-container#machine-container-template',

            'spinner': '.large-spinner',

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

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

            'os_icon': '#list-vm-{0} .os_icon',

            'vm_cont_active': '#machinesview-list',

            'vm_cont_terminated': '#machinesview-list'

        },

        initialize: function() {

            this.current_vm = 0;

            // button selectors

            this.prev_button = this.$(".controls .previous");

            this.next_button = this.$(".controls .next");

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

            this.datatable_cont = this.$(".dataTables_wrapper").show();

            this.content = this.$("#machinesview_content").show();

            this.filter = this.$(".dataTables_filter").show().css({'display':'block'});

            this.table_el = this.$(".list-machines").show();

            this.select_all = $("#list-view-select-all");

            this.actions = new views.ListMultipleActions(this);

            this.table = $("div.list table.list-machines").dataTable({

                "bInfo": false,

                "bRetrieve": true,

                "bPaginate": false,

                "bAutoWidth": false,

                "bSort": true,

                "bStateSave": true,

                "sScrollXInner": "500px",

                "aoColumnDefs": [

                    { "bSortable": false, "aTargets": [ 0 ] }

                ]

            });

            this.table_data = {};

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

            this.update_layout = _.throttle(this.update_layout, 100);

        },

        reset: function() {

        },

        hide_actions: function() {

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

        },

        // overload show function

        show_view: function() {

            this.log.debug("showing");

            this.sel('spinner').hide();

            this.__update_layout();

        },

        check_vm_container: function() {

        },

        // identify vm model instance id based on DOM element

        vm_id_for_element: function(el) {

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

        },

        reset_actions: function() {

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

            storage.vms.reset_pending_actions();

        },

        // set generic view handlers

        set_handlers: function() {

            this.$(".list-vm-checkbox").live('change', _.bind(function(){

                this.reset_actions();

                this.actions.update_layout();

                if (this.$("tbody input:checked").length > 0) {

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

                } else {

                    this.select_all.attr("checked", false);

                }

                self.actions.update_layout();

            }, this))

            var self = this;

            this.select_all.click(function(){

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

                    self.$("tbody input").attr("checked", true);

                } else {

                    self.$("tbody input").attr("checked", false);

                }

                self.actions.update_layout();

            });

        },  

        get_selected_vms: function() {

            var selected = $(this.el).find(".list-vm-checkbox:checked");

            var vms = []

            _.each(selected, function(el){

                var id = parseInt($(el).attr("id").replace("checkbox-list-vm-", ""));

                vm = storage.vms.get(id);

                if (!vm) { return };

                vms.push(vm);

            });

            return vms;

        },

        select_action: function(action) {

            this.reset_actions();

            this.$(".actions a#action-" + action).addClass("selected");

            var vms = this.get_selected_vms();

            _.each(vms, function(vm){

                vm.update_pending_action(action);

            })

        },

        reset: function() {

            this.reset_actions();

        },

        create_vm: function(vm) {

            params = this.get_vm_table_data(vm);

            var index = this.table.fnAddData.call(this.table, params);

            this.table_data["vm_" + vm.id] = {index: index[0], params: params};

            // append row id

            $(this.table.fnGetNodes(index)).attr("id", this.id_tpl + vm.id);

            var vm_el = $("#" + this.id_tpl + vm.id);

            this._vm_els[vm.id] = vm_el;

            // hide indicators on creation

            this.vm(vm).find(".spinner").hide();

            this.vm(vm).find(".wave").hide();

            this.vm(vm).find(".os_icon").show();

            this.vm(vm).find(".action-indicator").hide();

            // ancestor method

            this.__set_vm_handlers(vm);

            this.post_add(vm);

            return this.vm(vm);

        },

        // remove vm

        remove_vm: function(vm) {

            this.vm(vm).find("input[type=checkbox]").removeAttr("checked");

            var vm_data = this.table_data["vm_" + vm.id];

            // update triggered on removed vm, skipping

            if (!vm_data) { return };

            var index = vm_data.index;

            this.table.fnDeleteRow(index);

            delete this.table_data["vm_" + vm.id];

            this.update_data();

            if (hasKey.call(this._vm_els, vm.id)) {

                delete this._vm_els[vm.id];

            }

        },

        update_data: function() {

            var new_data = this.table.fnGetData();

            _.each(new_data, _.bind(function(row, i){

                this.table_data["vm_" + row[5]].index = i;

                this.table_data["vm_" + row[5]].params = row;

            }, this));

        },

        set_indicator_for: function(action) {

            var vms = this.get_selected_vms();

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

                var vmel = this.vm(vm);

                vmel.find("img.spinner, img.wave, img.os_icon").hide();

                vmel.find("span.action-indicator").show().removeClass().addClass(action + " action-indicator");

            }, this));

        },

        clear_indicators: function() {

            var vms = storage.vms.models;

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

                var vmel = this.vm(vm);

                vmel.find("img.wave").hide();

                if (vm.pending_action) {

                    vmel.find("img.os_icon").hide();

                    vmel.find("span.action-indicator").show().removeClass().addClass(vm.pending_action + " action-indicator");

                    return;

                }

                if (vm.in_transition()) {

                    vmel.find("span.action-indicator").hide();

                    vmel.find("img.spinner").show();

                    return;

                }

                if (!this.actions.hovered) {

                    vmel.find("img.os_icon").show();

                    vmel.find("span.action-indicator").hide();

                    vmel.find("img.spinner").hide();

                }

            }, this));

        },

        get_vm_table_data: function(vm) {

            var checkbox = '<input type="checkbox" class="' + 

                views.ListView.STATE_CLASSES[vm.state()].join(" ") + 

                ' list-vm-checkbox" id="checkbox-' + this.id_tpl + vm.id + '"/>';

            var img = '<img class="os_icon" src="'+ this.get_vm_icon_path(vm, "small") +'" />';

            img = img + '<img src="'+snf.config.indicators_icons_url+'small/progress.gif" class="spinner" />';

            img = img + '<img src="'+snf.config.indicators_icons_url+'medium/wave.gif" class="wave" />';

            img = img + '<span class="action-indicator" />';

            var name = util.truncate(vm.get('name'), 25);

            var flavor = vm.get_flavor().details_string();

            var status = STATE_TEXTS[vm.state()];

            return [checkbox, img, name, flavor, status, vm.id];

        },

        post_add: function(vm) {

        },

        // is vm in transition ??? show the progress spinner

        update_transition_state: function(vm) {

            if (!vm) { return };

            if (this.in_transition) { return };

            if ((this.actions.hovered && this.vm(vm).find("input").is(":checked")) || vm.pending_action) {

                this.sel('vm_spinner', vm.id).hide();

                this.sel('vm_wave', vm.id).hide();

                this.sel('os_icon', vm.id).hide();

                this.vm(vm).find(".action-indicator").show();

                return;

            }

            if (vm.in_transition()){

                this.sel('vm_spinner', vm.id).show();

                this.sel('vm_wave', vm.id).hide();

                this.sel('os_icon', vm.id).hide();

                this.vm(vm).find(".action-indicator").hide();

            } else {

                this.sel('vm_spinner', vm.id).hide();

                this.vm(vm).find(".action-indicator").hide();

                this.sel('os_icon', vm.id).show();

            }

        },

        // display transition animations

        show_transition: function(vm) {

            this.in_transition = true;

            if (!this.visible()) { 

                this.in_transition = false; 

                this.update_transition_state(); 

                return 

            };

            var wave = this.sel('vm_wave', vm.id);

            if (!wave.length) {

                this.in_transition = false

                return

            }

            this.sel('vm_spinner', vm.id).hide();

            this.sel('os_icon', vm.id).hide();

            var src = wave.attr('src');

            var self = this;

            // change src to force gif play from the first frame

            // animate for 500 ms then hide

            wave.attr('src', "").show().attr('src', src).fadeIn(500).delay(700).fadeOut(300, function() {

                self.in_transition = false;

                self.update_transition_state(vm);

            });

        },

        update_actions_layout: function(vm) {

        },

        post_update_vm: function(vm) {

            // skip update for these changes for performance issues

            if (vm.hasOnlyChange(["pending_action", "stats"])) { return };

            var index = this.table_data["vm_" + vm.id].index;

            params = this.get_vm_table_data(vm);

            this.table_data["vm_" + vm.id].params = params;

            data = this.table.fnGetData()[index];

            // do not recreate checkboxes and images to avoid messing

            // with user interaction

            this.table.fnUpdate(params[2], parseInt(index), 2);

            this.table.fnUpdate(params[3], parseInt(index), 3);

            this.table.fnUpdate(params[4], parseInt(index), 4);

            var active_class = vm.is_active() ? "active" : "inactive";

            this.vm(vm).removeClass("active").removeClass("inactive").addClass(active_class);

            $(this.vm(vm).find("td").get(4)).addClass("status");

            $(this.vm(vm).find("td").get(3)).addClass("flavor");

            $(this.vm(vm).find("td").get(2)).addClass("name");

            if (vm.status() == "ERROR") {

                this.vm(vm).removeClass("active").removeClass("inactive").addClass("error");

            } else {

                this.vm(vm).removeClass("error").addClass(active_class);

            }

            this.update_os_icon(vm);

            this.update_transition_state(vm);

        },

        update_os_icon: function(vm) {

            this.sel('os_icon', vm.id).attr('src', this.get_vm_icon_path(vm, "small"));

        },

        // vm specific event handlers

        set_vm_handlers: function(vm) {

        },

        // generic stuff to do on each view update

        // called once after each vm has been updated

        update_layout: function() {

            this.actions.update_layout();

        },

        // update vm details

        update_details: function(vm) {

        },

        get_vm_icon_os: function(vm) {

            var os = vm.get_os();

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

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

                os = "okeanos";

            }

            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.ListView.VM_OS_ICONS;

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

                os = "okeanos";

            }

            var st = "off";

            if (vm.is_active()) {

                st = "on"

            }

            return views.ListView.VM_OS_ICON_TPLS()[icon_type].format(os, st);

        }

    })

    views.ListView.VM_OS_ICON_TPLS = function() {

        return {

            "small": snf.config.machines_icons_url + "small/{0}-{1}.png"

        }

    }

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

    views.ListView.STATE_CLASSES = {

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

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

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

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

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

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

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

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

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

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

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

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

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

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

        'DISCONNECT':       ['disconnecting-state']

    };

})(this);