Synnefo

;(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);

    // Extended views module

    // View objects to provide more sophisticated base objects for views 

    // that are bind to existing storage model/collection objects.

    views.ext = {};

    views.ext.View = views.View.extend({

      rivets_view: false,

      rivets: undefined,

      container: undefined,

      classes:'',

      storage_handlers: {},

      init: function() {},

      post_init: function() {},

      initialize: function(options) {

        views.ext.View.__super__.initialize.apply(this, arguments);

        this.container = options && options.container;

        this._subviews = [];

        if (this.tpl) {

          this.el = $(this.tpl).clone().removeClass("hidden").removeAttr('id');

        }

        this.init.apply(this, arguments);

        this.post_init.apply(this, arguments);

        this.append_to_container();

        $(this.el).addClass(this.classes);

        _.bindAll(this);

      },

      append_to_container: function() {

        if (!this.container) { return }

        var cont = $(this.container);

        cont.append(this.el);

      },

      create_view: function(view_cls, options) {

        var options = _.extend({}, options);

        options.parent_view = this;

        var view = new view_cls(options);

        return view;

      },

      add_subview: function(view) {

        view.parent_view = this;

        this._subviews.push(view);

      },

      remove_view: function(view) {

        this._subviews = _.without(this._subviews, view);

      },

      hide_subviews: function() {

        _.each(this._subviews, function(view) { 

          view.hide(true); 

        });

      },

      show_subviews: function() {

        _.each(this._subviews, function(view) { 

          view.show(true); 

        });

      },

      pre_hide: function() {

        this.rivets_unbind();

        this.remove_handlers();

      },

      get_extra_rivet_models: function() {},

      get_rivet_object: function() {

        return this.rivet_object;

      },

      post_hide: function() {

        this.hide_subviews();

        this.trigger("hide");

      },

      rivets_init: function() {

        if (!this.rivets_view) { return }

        var rivet_object = this.get_rivet_object();

        rivet_object['view'] = this;

        if (this.el != $("body").get(0)) {

          this.rivets = rivets.bind(this.el, rivet_object);

        } else {

        }

      },

      rivets_update: function() {

        if (!this.rivets_view) { return }

        this.rivets.update();

      },

      rivets_bind: function() {

        if (!this.rivets_view) { return }

        if (!this.rivets) { this.rivets_init(); return }

        var rivet_object = this.get_rivet_object();

        rivet_object['view'] = this;

        this.rivets.models = rivet_object;

        //this.rivets.build();

        this.rivets.bind();

      },

      rivets_unbind: function() {

        if (!this.rivets_view) { return }

        if (!this.rivets) { return }

        this.rivets.unbind();

      },

      pre_show: function() {

        this.set_handlers();

        this.rivets_bind();

        this.show_subviews();

      },

      resolve_storage_object: function(id) {

        var result;

        if (this['resolve_' + id + '_storage_object']) {

          return this['resolve_' + id + '_storage_object']();

        }

        result = synnefo.storage[id];

        return result ? result : this.collection

      },

      each_storage_handler: function(cb, context) {

        if (!context) { context = this }

        _.each(this.storage_handlers, function(handlers, object_name) {

          _.each(handlers, function(events, handler_name) {

            _.each(events, function(event) {

              object = this.resolve_storage_object(object_name);

              handler = this['handle_' + handler_name];

              if (!handler) {

                throw "Handler " + handler_name + " does not exist";

              }

              if (!object) {

                throw "Storage object " + object_name + " does not exist";

              }

              cb.call(context, object, event, handler);

            }, this);

          }, this);

        }, this);

      },

      get_handler: function(id) {

      },

      set_handlers: function() {

        this.each_storage_handler(this.set_handler, this);

      },

      remove_handlers: function() {

        this.each_storage_handler(this.remove_handler, this);

      },

      set_handler: function(object, event, handler) {

        object.bind(event, handler);

      },

      remove_handler: function(object, event, handler) {

        object.unbind(event, handler);

      }

    });

    views.ext.PaneView = views.ext.View.extend({

      collection_view_cls: null,

      collection_view_selector: '.collection',

      init: function() {

        var options = {};

        options['el'] = $(this.$(this.collection_view_selector).get(0));

        this.collection_view = this.create_view(this.collection_view_cls, options);

        this.add_subview(this.collection_view);

      },

    });

    views.ext.CollectionView = views.ext.View.extend({

      collection: undefined,

      model_view_cls: undefined,

      animation_speed: 200,

      quota_key: undefined,

      quota_limit_message: undefined,

      init: function() {

        var handlers = {};

        handlers[this.collection_name] = {

          'collection_change': ['update', 'sort'],

          'collection_reset': ['reset'],

          'model_change': ['change'],

          'model_add': ['add'],

          'model_remove': ['remove']

        }

        this.storage_handlers = _.extend(handlers, this.storage_handlers)

        this._model_views = {};

        this.list_el = $(this.$(".items-list").get(0));

        this.empty_el = $(this.$(".empty-list").get(0));

        if (this.create_view_cls) {

          this._create_view = new this.create_view_cls();

          this._create_view.parent_view = this;

        }

        this.create_button = this.$(".create-button a");

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

          e.preventDefault();

          this.handle_create_click();

        }, this));

        if (this.quota_key && !this.quota) {

          this.quota = synnefo.storage.quotas.get(this.quota_key);

        }

        if (this.quota) {

          this.quota.bind("change", _.bind(this.update_quota, this));

          this.update_quota();

        }

      },

      update_quota: function() {

        var available = this.quota.get_available();

        if (available > 0) {

          this.create_button.removeClass("disabled");

          this.create_button.attr("title", this.quota_limit_message || "Quota limit reached")

        } else {

          this.create_button.addClass("disabled");

          this.create_button.attr("title", "");

        }

      },

      post_create: function() {

        this.quota && this.quota.increase();

      },

      post_destroy: function() {

        this.quota && this.quota.decrease();

      },

      handle_create_click: function() {

        if (this.create_button.hasClass("disabled")) { return }

        if (this._create_view) {

          this._create_view.show();

        }

      },

      pre_show: function() {

        views.ext.CollectionView.__super__.pre_show.apply(this, arguments);

        this.update_models();

      },

      handle_collection_reset: function() {

        this.update_models();

      },

      handle_model_change: function(model) {

        var el, index, model, parent, view, anim;

        view = this._model_views[model.id];

        if (!view) { return }

        el = view.el;

        parent = this.parent_for_model(model);

        index = this.collection.indexOf(model);

        if (!parent.find(el).length) {

          anim = true;

          this.place_in_parent(parent, el, model, index, anim);

        }

        if (index != view.el.data('index')) {

          this.place_in_parent(parent, el, model, index, false);

        }

      },

      handle_collection_change: function() {

        this.update_models();

      },

      handle_model_add: function(model, collection, options) {

        this.add_model(model);

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

      },

      handle_model_remove: function(model, collection, options) {

        this.remove_model(model);

      },

      show_empty: function() {

        this.empty_el.show();

      },

      hide_empty: function() {

        this.empty_el.hide();

      },

      check_empty: function() {

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

          this.show_empty();

          this.list_el.hide();

        } else {

          this.list_el.show();

          this.hide_empty();

        }

      },

      parent_for_model: function(model) {

        return this.list_el;

      },

      place_in_parent: function(parent, el, m, index, anim) {

        var place_func, place_func_context, position_found, exists;

        _.each(parent.find(".model-item"), function(el) {

          var el = $(el);

          var el_index = el.data('index');

          if (!el_index || position_found) { return };

          if (parseInt(el_index) < index) {

            place_func = el.before;

            place_func_context = el;

            position_found = true;

          }

        });

        if (!position_found) {

          place_func = parent.append;

          place_func_context = parent;

        }

        if (anim) {

          var self = this;

          el.fadeOut(this.animation_speed, function() {

            place_func.call(place_func_context, el);

            el.fadeIn(self.animation_speed);

          });

        } else {

          place_func.call(place_func_context, el);

        }

        el.attr("data-index", index);

      },

      get_model_view_cls: function(m) {

        return this.model_view_cls

      },

      add_model: function(m, index) {

        // if no available class for model exists, skip model add

        var view_cls = this.get_model_view_cls(m);

        if (!view_cls) { return }

        // avoid duplicate entries

        if (this._model_views[m.id]) { return }

        // handle empty collection

        this.check_empty();

        // initialize view

        var view = this.create_view(this.get_model_view_cls(m), {model: m});

        this.add_model_view(view, m, index);

      },

      add_model_view: function(view, model, index) {

        // append html element to the parent

        var el = view.init_element();

        // append to registry object

        this._model_views[model.id] = view;

        el.addClass("model-item");

        // where to place ?

        var parent = this.parent_for_model(model);

        // append

        this.place_in_parent(parent, el, model, index);

        // make it visible by default

        this.add_subview(view);

        view.show(true);

        this.post_add_model_view(view, model);

      },

      post_add_model_view: function() {},

      each_model_view: function(cb, context) {

        if (!context) { context = this };

        _.each(this._model_views, function(view, model_id){

          var model = this.collection.get(model_id);

          cb.call(this, model, view, model_id);

        }, this);

      },

      remove_model: function(m) {

        var model_view = this._model_views[m.id];

        if (!model_view) {

          console.error("no view found");

          return;

        }

        model_view.hide();

        model_view.el.remove();

        this.remove_view(model_view);

        this.post_remove_model_view(model_view, m);

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

        delete this._model_views[m.id];

        this.check_empty();

      },

      post_remove_model_view: function() {},

      update_models: function(m) {

        this.check_empty();

        this.collection.each(function(model, index) {

          if (!(model.id in this._model_views)) {

            this.add_model(model, index);

          } else {

            if (model != this._model_views[model.id].model) {

              this._model_views[model.id].model = model;

              this._model_views[model.id].rivets_unbind();

              this._model_views[model.id].rivets_bind();

            }

            this.handle_model_change(model);

          }

        }, this);

        this.each_model_view(function(model, view, model_id){

          if (!model) {

            model = {'id': model_id};

            this.remove_model(model);

          }

        })

      }

    });

    views.ext.ModelView = views.ext.View.extend({

      rivets_view: true,

      initialize: function() {

        views.ext.ModelView.__super__.initialize.apply(this, arguments);

        var actions = this.model.get('actions');

        if (actions) {

          this.init_action_methods(this.model.get('actions'));

          this.bind("hide", function() {

            actions.reset_pending();

          });

        }

      },

      set_confirm: function() {},

      unset_confirm: function() {},

      init_action_methods: function(actions) {

        _.each(actions.actions, function(action) {

          var method;

          method = 'set_{0}_confirm'.format(action);

          if (this[method]) { return }

          this[method] = _.bind(function(model, ev) {

            if (ev) { ev.stopPropagation() }

            var data = {};

            this.set_confirm(action);

            this.model.actions.set_pending_action(action);

          }, this);

          method = 'unset_{0}_confirm'.format(action);

          if (this[method]) { return }

          this[method] = _.bind(function(model, ev) {

            if (ev) { ev.stopPropagation() }

            var data = {};

            this.unset_confirm(action);

            this.model.actions.unset_pending_action(action);

          }, this);

        }, this);

      },

      get_rivet_object: function() {

        var model = {

          model: this.model

        }

        return model

      },

      post_init_element: function() {},

      init_element: function() {

        this.el.attr("id", "model-" + this.model.id);

        this.post_init_element();

        this.update_layout();

        return this.el;

      },

      update_layout: function() {}

    });

    views.ModelRenameView = views.ext.ModelView.extend({

      tpl: '#rename-view-tpl',

      title_attr: 'name',

      init: function() {

        views.ModelRenameView.__super__.init.apply(this, arguments);

        this.name_cont = this.$(".model-name");

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

        this.edit_btn = this.$(".edit-btn");

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

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

        this.confirm = this.edit_cont.find(".confirm");

        this.cancel = this.edit_cont.find(".cancel");

        if (this.model.get('rename_disabled')) {

          this.edit_btn.remove();

        }

        this.value.dblclick(_.bind(function(e) {

          this.set_edit();

        }, this));

        this.input.bind('keyup', _.bind(function(e) {

          // enter keypress

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

          // esc keypress

          if (e.which == 27) { this.unset_edit(); }

        }, this));

        // initial state

        this.unset_edit();

      },

      post_hide: function() {

        this.unset_edit();

      },

      set_edit: function() {

        if (this.model.get('rename_disabled')) { return }

        var self = this;

        this.input.val(this.model.get('name'));

        window.setTimeout(function() {

          self.input.focus();

        }, 20);

        this.name_cont.hide();

        this.edit_cont.show();

      },

      unset_edit: function() {

        this.name_cont.show();

        this.edit_cont.hide();

      },

      rename: function() {

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

        if (value) {

          this.model.rename(value);

          this.unset_edit();

        }

      }

    });

    views.ext.SelectModelView = views.ext.ModelView.extend({

      select: function() {

        if (!this.delegate_checked) {

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

          this.item.addClass("selected");

        }

        this.selected = true;

        this.trigger("change:select", this, this.selected);

      },

      deselect: function() {

        if (!this.delegate_checked) {

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

          this.item.removeClass("selected");

        }

        this.selected = false;

        this.trigger("change:select", this, this.selected);

      },

      toggle_select: function() {

        if (this.selected) { 

          this.deselect();

        } else {

          this.select();

        }

      },

      post_init_element: function() {

        this.input = $(this.$("input").get(0));

        this.item = $(this.$(".select-item").get(0));

        this.delegate_checked = this.model.get('noselect');

        this.deselect();

        var self = this;

        if (self.model.get('forced')) {

          this.select();

          this.input.attr("disabled", true);

          $(this.el).attr('title', this.forced_title);

          $(this.el).tooltip({

            'tipClass': 'tooltip', 

            'position': 'top center',

            'offset': [29, 0]

          });

        }

        $(this.item).click(function(e) {

          if (self.model.get('forced')) { return }

          e.stopPropagation();

          self.toggle_select();

        });

        views.ext.SelectModelView.__super__.post_init_element.apply(this,

                                                                    arguments);

      }

    });

    views.ext.ModelCreateView = views.ext.ModelView.extend({});

    views.ext.ModelEditView = views.ext.ModelCreateView.extend({});

})(this);