diff --git a/addons/web/static/src/js/corelib.js b/addons/web/static/src/js/corelib.js
index ff193605033..7a9af79b4fb 100644
--- a/addons/web/static/src/js/corelib.js
+++ b/addons/web/static/src/js/corelib.js
@@ -121,6 +121,10 @@ openerp.web.corelib = function(instance) {
 
         // The dummy class constructor
         function Class() {
+            if(this.constructor !== instance.web.Class){
+                throw new Error("You can only instanciate objects with the 'new' operator");
+                return null;
+            }
             // All construction is actually done in the init method
             if (!initializing && this.init) {
                 var ret = this.init.apply(this, arguments);
diff --git a/addons/web/static/src/js/view_form.js b/addons/web/static/src/js/view_form.js
index 8e7364ee50a..a095ab129c1 100644
--- a/addons/web/static/src/js/view_form.js
+++ b/addons/web/static/src/js/view_form.js
@@ -126,6 +126,7 @@ instance.web.FormView = instance.web.View.extend(instance.web.form.FieldManagerM
             self.on("change:actual_mode", self, self.init_pager);
             self.init_pager();
         });
+        self.on("load_record", self, self.load_record);
         instance.web.bus.on('clear_uncommitted_changes', this, function(e) {
             if (!this.can_be_discarded()) {
                 e.preventDefault();
@@ -172,10 +173,10 @@ instance.web.FormView = instance.web.View.extend(instance.web.form.FieldManagerM
         } else {
             this.$el.find('.oe_form_buttons').replaceWith(this.$buttons);
         }
-        this.$buttons.on('click','.oe_form_button_create',this.on_button_create);
-        this.$buttons.on('click','.oe_form_button_edit',this.on_button_edit);
-        this.$buttons.on('click','.oe_form_button_save',this.on_button_save);
-        this.$buttons.on('click','.oe_form_button_cancel',this.on_button_cancel);
+        this.$buttons.on('click', '.oe_form_button_create', this.on_button_create);
+        this.$buttons.on('click', '.oe_form_button_edit', this.on_button_edit);
+        this.$buttons.on('click', '.oe_form_button_save', this.on_button_save);
+        this.$buttons.on('click', '.oe_form_button_cancel', this.on_button_cancel);
 
         this.$sidebar = this.options.$sidebar || this.$el.find('.oe_form_sidebar');
         if (!this.sidebar && this.options.$sidebar) {
@@ -331,7 +332,9 @@ instance.web.FormView = instance.web.View.extend(instance.web.form.FieldManagerM
                 fields.push('display_name');
                 return self.dataset.read_index(fields, {
                     context: { 'bin_size': true, 'future_display_name' : true }
-                }).pipe(self.on_record_loaded);
+                }).pipe(function(r) {
+                    self.trigger('load_record', r);
+                });
             });
         }
         return shown.pipe(function() {
@@ -354,7 +357,7 @@ instance.web.FormView = instance.web.View.extend(instance.web.form.FieldManagerM
         }
         this._super();
     },
-    on_record_loaded: function(record) {
+    load_record: function(record) {
         var self = this, set_values = [];
         if (!record) {
             this.set({ 'title' : undefined });
@@ -413,12 +416,14 @@ instance.web.FormView = instance.web.View.extend(instance.web.form.FieldManagerM
      * @return {$.Deferred}
      */
     load_defaults: function () {
+        var self = this;
         var keys = _.keys(this.fields_view.fields);
         if (keys.length) {
-            return this.dataset.default_get(keys)
-                    .pipe(this.on_record_loaded);
+            return this.dataset.default_get(keys).pipe(function(r) {
+                self.trigger('load_record', r);
+            });
         }
-        return this.on_record_loaded({});
+        return self.trigger('load_record', {});
     },
     on_form_changed: function() {
         this.trigger("view_content_has_changed");
@@ -752,9 +757,10 @@ instance.web.FormView = instance.web.View.extend(instance.web.form.FieldManagerM
                 this.trigger('history_back');
             } else {
                 this.to_view_mode();
-                this.on_record_loaded(this.datarecord);
+                this.trigger('load_record', this.datarecord);
             }
         }
+        this.trigger('on_button_cancel');
         return false;
     },
     on_button_new: function() {
@@ -952,9 +958,15 @@ instance.web.FormView = instance.web.View.extend(instance.web.form.FieldManagerM
             } else {
                 var fields = _.keys(self.fields_view.fields);
                 fields.push('display_name');
-                return self.dataset.read_index(fields, {
-                    context : { 'bin_size' : true, 'future_display_name' : true }
-                }).pipe(self.on_record_loaded);
+                return self.dataset.read_index(fields,
+                    {
+                        context: {
+                            'bin_size': true,
+                            'future_display_name': true
+                        }
+                    }).pipe(function(r) {
+                        self.trigger('load_record', r);
+                    });
             }
         });
     },
@@ -2971,7 +2983,7 @@ instance.web.form.FieldMany2One = instance.web.form.AbstractField.extend(instanc
                     title: _t("Open: ") + self.string
                 }
             );
-            pop.on('on_write_complete', self, function(){
+            pop.on('write_completed', self, function(){
                 self.display_value = {};
                 self.render_value();
                 self.focus();
@@ -3369,9 +3381,9 @@ instance.web.form.FieldOne2Many = instance.web.form.AbstractField.extend({
                 if (self.get("effective_readonly")) {
                     $(".oe_form_buttons", controller.$el).children().remove();
                 }
-                controller.on_record_loaded.add_last(function() {
-                    once.resolve();
-                });
+                controller.on("load_record", self, function(){
+                     once.resolve();
+                 });
                 controller.on_pager_action.add_first(function() {
                     self.save_any_view();
                 });
@@ -3380,10 +3392,13 @@ instance.web.form.FieldOne2Many = instance.web.form.AbstractField.extend({
             }
             def.resolve();
         });
-        this.viewmanager.on_mode_switch.add_first(function(n_mode, b, c, d, e) {
+        this.viewmanager.on("switch_mode", self, function(n_mode, b, c, d, e) {
             $.when(self.save_any_view()).then(function() {
-                if(n_mode === "list")
-                    $.async_when().then(function() {self.reload_current_view();});
+                if (n_mode === "list") {
+                    $.async_when().then(function() {
+                        self.reload_current_view();
+                    });
+                }
             });
         });
         this.is_setted.then(function() {
@@ -3551,7 +3566,7 @@ instance.web.form.One2ManyViewManager = instance.web.ViewManager.extend({
         });
         this.__ignore_blur = false;
     },
-    switch_view: function(mode, unused) {
+    switch_mode: function(mode, unused) {
         if (mode !== 'form') {
             return this._super(mode, unused);
         }
@@ -4120,7 +4135,7 @@ instance.web.form.Many2ManyListView = instance.web.ListView.extend(/** @lends in
             title: _t("Open: ") + this.m2m_field.string,
             readonly: this.getParent().get("effective_readonly")
         });
-        pop.on('on_write_complete', self, self.reload_content);
+        pop.on('write_completed', self, self.reload_content);
     }
 });
 
@@ -4189,7 +4204,7 @@ instance.web.form.FieldMany2ManyKanban = instance.web.form.AbstractField.extend(
             self.initial_is_loaded.resolve();
             loaded.resolve();
         });
-        this.kanban_view.do_switch_view.add_last(_.bind(this.open_popup, this));
+        this.kanban_view.on('switch_mode', this, this.open_popup);
         $.async_when().then(function () {
             self.kanban_view.appendTo(self.$el);
         });
@@ -4368,7 +4383,7 @@ instance.web.form.AbstractFormPopup = instance.web.Widget.extend({
         this.dataset.write_function = function(id, data, options, sup) {
             var fct = self.options.write_function || sup;
             return fct.call(this, id, data, options).then(function() {
-                self.trigger('on_write_complete');
+                self.trigger('write_completed');
             });
         };
         this.dataset.parent_view = this.options.parent_view;
diff --git a/addons/web/static/src/js/view_list_editable.js b/addons/web/static/src/js/view_list_editable.js
index 892221a347b..fe0f525fe3f 100644
--- a/addons/web/static/src/js/view_list_editable.js
+++ b/addons/web/static/src/js/view_list_editable.js
@@ -626,7 +626,7 @@ openerp.web.list_editable = function (instance) {
         },
         start: function () {
             var self = this;
-            var _super = this._super();
+            var _super = this._super();            
             this.form.embedded_view = this._validate_view(
                     this.delegate.edition_view(this));
             var form_ready = this.form.appendTo(this.$el).then(
@@ -708,10 +708,9 @@ openerp.web.list_editable = function (instance) {
             var self = this;
             var form = self.form;
             var loaded = record
-                ? form.on_record_loaded(_.extend({}, record))
+                ? form.trigger('load_record', _.extend({}, record))
                 : form.load_defaults();
-
-            return loaded.pipe(function () {
+            return $.when(loaded).pipe(function () {
                 return form.do_show({reload: false});
             }).pipe(function () {
                 self.record = form.datarecord;
diff --git a/addons/web/static/src/js/views.js b/addons/web/static/src/js/views.js
index b98d6d4802b..f985e5f6dc8 100644
--- a/addons/web/static/src/js/views.js
+++ b/addons/web/static/src/js/views.js
@@ -417,7 +417,7 @@ instance.web.ViewManager =  instance.web.Widget.extend({
         this._super();
         var self = this;
         this.$el.find('.oe_view_manager_switch a').click(function() {
-            self.on_mode_switch($(this).data('view-type'));
+            self.switch_mode($(this).data('view-type'));
         }).tipsy();
         var views_ids = {};
         _.each(this.views_src, function(view) {
@@ -439,24 +439,17 @@ instance.web.ViewManager =  instance.web.Widget.extend({
         }
         // If no default view defined, switch to the first one in sequence
         var default_view = this.flags.default_view || this.views_src[0].view_type;
-        return this.on_mode_switch(default_view);
+        return this.switch_mode(default_view);
     },
-    /**
-     * Asks the view manager to switch visualization mode.
-     *
-     * @param {String} view_type type of view to display
-     * @param {Boolean} [no_store=false] don't store the view being switched to on the switch stack
-     * @returns {jQuery.Deferred} new view loading promise
-     */
-    on_mode_switch: function(view_type, no_store, view_options) {
+    switch_mode: function(view_type, no_store, view_options) {
         var self = this;
         var view = this.views[view_type];
         var view_promise;
         var form = this.views['form'];
         if (!view || (form && form.controller && !form.controller.can_be_discarded())) {
+            self.trigger('switch_mode', view_type, no_store, view_options);
             return $.Deferred().reject();
         }
-
         if (!no_store) {
             this.views_history.push(view_type);
         }
@@ -474,13 +467,12 @@ instance.web.ViewManager =  instance.web.Widget.extend({
             this.searchview[(view.controller.searchable === false || this.searchview.hidden) ? 'hide' : 'show']();
         }
 
-        this.$el
-            .find('.oe_view_manager_switch a').parent().removeClass('active');
+        this.$el.find('.oe_view_manager_switch a').parent().removeClass('active');
         this.$el
             .find('.oe_view_manager_switch a').filter('[data-view-type="' + view_type + '"]')
             .parent().addClass('active');
 
-        return $.when(view_promise).then(function () {
+        r = $.when(view_promise).then(function () {
             _.each(_.keys(self.views), function(view_name) {
                 var controller = self.views[view_name].controller;
                 if (controller) {
@@ -501,7 +493,9 @@ instance.web.ViewManager =  instance.web.Widget.extend({
                     }
                 }
             });
+            self.trigger('switch_mode', view_type, no_store, view_options);
         });
+        return r;
     },
     do_create_view: function(view_type) {
         // Lazy loading of views
@@ -530,7 +524,7 @@ instance.web.ViewManager =  instance.web.Widget.extend({
         if (view.embedded_view) {
             controller.set_embedded_view(view.embedded_view);
         }
-        controller.do_switch_view.add_last(_.bind(this.switch_view, this));
+        controller.on('switch_mode', self, this.switch_mode);
 
         controller.do_prev_view.add_last(this.on_prev_view);
         var container = this.$el.find(".oe_view_manager_view_" + view_type);
@@ -552,7 +546,7 @@ instance.web.ViewManager =  instance.web.Widget.extend({
     add_breadcrumb: function(on_reverse_breadcrumb) {
         var self = this;
         var views = [this.active_view || this.views_src[0].view_type];
-        this.on_mode_switch.add(function(mode) {
+        this.on('switch_mode', self, function(mode) {
             var last = views.slice(-1)[0];
             if (mode !== last) {
                 if (mode !== 'form') {
@@ -568,7 +562,7 @@ instance.web.ViewManager =  instance.web.Widget.extend({
                 var view_to_select = views[index];
                 self.$el.show();
                 if (self.active_view !== view_to_select) {
-                    self.on_mode_switch(view_to_select);
+                    self.switch_mode(view_to_select);
                 }
             },
             get_title: function() {
@@ -598,18 +592,10 @@ instance.web.ViewManager =  instance.web.Widget.extend({
             on_reverse_breadcrumb: on_reverse_breadcrumb,
         });
     },
-    /**
-     * Method used internally when a view asks to switch view. This method is meant
-     * to be extended by child classes to change the default behavior, which simply
-     * consist to switch to the asked view.
-     */
-    switch_view: function(view_type, no_store, options) {
-        return this.on_mode_switch(view_type, no_store, options);
-    },
     /**
      * Returns to the view preceding the caller view in this manager's
      * navigation history (the navigation history is appended to via
-     * on_mode_switch)
+     * switch_mode)
      *
      * @param {Object} [options]
      * @param {Boolean} [options.created=false] resource was created
@@ -623,12 +609,12 @@ instance.web.ViewManager =  instance.web.Widget.extend({
         if (options.created && current_view === 'form' && previous_view === 'list') {
             // APR special case: "If creation mode from list (and only from a list),
             // after saving, go to page view (don't come back in list)"
-            return this.on_mode_switch('form');
+            return this.switch_mode('form');
         } else if (options.created && !previous_view && this.action && this.action.flags.default_view === 'form') {
             // APR special case: "If creation from dashboard, we have no previous view
-            return this.on_mode_switch('form');
+            return this.switch_mode('form');
         }
-        return this.on_mode_switch(previous_view, true);
+        return this.switch_mode(previous_view, true);
     },
     /**
      * Sets up the current viewmanager's search view.
@@ -897,7 +883,7 @@ instance.web.ViewManagerAction = instance.web.ViewManager.extend({
         }, action || {});
         this.do_action(action);
     },
-    on_mode_switch: function (view_type, no_store, options) {
+    switch_mode: function (view_type, no_store, options) {
         var self = this;
 
         return $.when(this._super.apply(this, arguments)).then(function () {
@@ -932,7 +918,7 @@ instance.web.ViewManagerAction = instance.web.ViewManager.extend({
         if (state.view_type && state.view_type !== this.active_view) {
             defs.push(
                 this.views[this.active_view].deferred.pipe(function() {
-                    return self.on_mode_switch(state.view_type, true);
+                    return self.switch_mode(state.view_type, true);
                 })
             );
         } 
@@ -1271,6 +1257,7 @@ instance.web.View = instance.web.Widget.extend({
      * @param {String} view view type to switch to
      */
     do_switch_view: function(view) { 
+        this.trigger('switch_mode',view);
     },
     /**
      * Cancels the switch to the current view, switches to the previous one
diff --git a/addons/web_diagram/static/src/js/diagram.js b/addons/web_diagram/static/src/js/diagram.js
index 508aeb30563..9fd74853c3c 100644
--- a/addons/web_diagram/static/src/js/diagram.js
+++ b/addons/web_diagram/static/src/js/diagram.js
@@ -239,23 +239,23 @@ instance.web.DiagramView = instance.web.View.extend({
                     title: _t("Open: ") + title
                 }
             );
-
-        pop.on_write.add(function() {
+        pop.on('on_write_complete', self, function() {
             self.dataset.read_index(_.keys(self.fields_view.fields)).pipe(self.on_diagram_loaded);
             });
-
+        
         var form_fields = [self.parent_field];
         var form_controller = pop.view_form;
 
-        form_controller.on_record_loaded.add_first(function() {
+       form_controller.on("load_record", self, function(){
             _.each(form_fields, function(fld) {
                 if (!(fld in form_controller.fields)) { return; }
                 var field = form_controller.fields[fld];
                 field.$input.prop('disabled', true);
                 field.$drop_down.unbind();
-                field.$menu_btn.unbind();
             });
-        });
+         });
+
+       
     },
 
     // Creates a popup to add a node to the diagram
@@ -280,7 +280,7 @@ instance.web.DiagramView = instance.web.View.extend({
         var form_controller = pop.view_form;
         var form_fields = [this.parent_field];
 
-        form_controller.on_record_loaded.add_last(function() {
+        form_controller.on("load_record", self, function(){
             _.each(form_fields, function(fld) {
                 if (!(fld in form_controller.fields)) { return; }
                 var field = form_controller.fields[fld];
@@ -303,7 +303,7 @@ instance.web.DiagramView = instance.web.View.extend({
                 title: _t("Open: ") + title
             }
         );
-        pop.on_write.add(function() {
+        pop.on('on_write_complete', self, function() {
             self.dataset.read_index(_.keys(self.fields_view.fields)).pipe(self.on_diagram_loaded);
         });
     },
@@ -339,12 +339,13 @@ instance.web.DiagramView = instance.web.View.extend({
 
         var form_controller = pop.view_form;
 
-        form_controller.on_record_loaded.add_last(function () {
+
+       form_controller.on("load_record", self, function(){
             form_controller.fields[self.connectors.attrs.source].set_value(node_source_id);
             form_controller.fields[self.connectors.attrs.source].dirty = true;
             form_controller.fields[self.connectors.attrs.destination].set_value(node_dest_id);
             form_controller.fields[self.connectors.attrs.destination].dirty = true;
-        });
+       });
     },
 
     on_pager_action: function(action) {
diff --git a/addons/web_gantt/static/src/js/gantt.js b/addons/web_gantt/static/src/js/gantt.js
index 0d600712d4a..66d699c2cde 100644
--- a/addons/web_gantt/static/src/js/gantt.js
+++ b/addons/web_gantt/static/src/js/gantt.js
@@ -211,7 +211,7 @@ instance.web_gantt.GanttView = instance.web.View.extend({
     on_task_display: function(task) {
         var self = this;
         var pop = new instance.web.form.FormOpenPopup(self);
-        pop.on('on_write_complete',self,self.reload);
+        pop.on('write_completed',self,self.reload);
         pop.show_element(
             self.dataset.model,
             task.id,
diff --git a/addons/web_kanban/static/src/js/kanban.js b/addons/web_kanban/static/src/js/kanban.js
index 41cc366226f..d95546dfe41 100644
--- a/addons/web_kanban/static/src/js/kanban.js
+++ b/addons/web_kanban/static/src/js/kanban.js
@@ -194,7 +194,7 @@ instance.web_kanban.KanbanView = instance.web.View.extend({
         });
         var am = instance.webclient.action_manager;
         var form = am.dialog_widget.views.form.controller;
-        form.on_button_cancel.add_last(am.dialog.on_close);
+        form.on("on_button_cancel", self, am.dialog.on_close);
         form.on_created.add_last(function(r) {
             (new instance.web.DataSet(self, self.group_by_field.relation)).name_get([r.result]).then(function(new_record) {
                 am.dialog.on_close();
@@ -672,7 +672,7 @@ instance.web_kanban.KanbanGroup = instance.web.Widget.extend({
         });
         var am = instance.webclient.action_manager;
         var form = am.dialog_widget.views.form.controller;
-        form.on_button_cancel.add_last(am.dialog.on_close);
+        form.on("on_button_cancel", self, am.dialog.on_close);
         form.on_saved.add_last(function() {
             am.dialog.on_close();
             self.view.do_reload();
diff --git a/addons/web_tests/static/src/js/web_tests.js b/addons/web_tests/static/src/js/web_tests.js
index 5b9c1d02503..bc7d16913fb 100644
--- a/addons/web_tests/static/src/js/web_tests.js
+++ b/addons/web_tests/static/src/js/web_tests.js
@@ -23,14 +23,14 @@ openerp.web_tests = function (instance) {
         on_everything_loaded: function (slice) {
             var records = slice[0].records;
             if (!records.length) {
-                this.form.on_record_loaded({});
+                this.form.trigger("load_record", {});
                 return;
             }
-            this.form.on_record_loaded(records[0]);
+            this.form.trigger("load_record", records[0]);
             _(records.slice(1)).each(function (record, index) {
                 this.dataset.index = index+1;
                 this.form.reposition($('<div>').appendTo(this.$el));
-                this.form.on_record_loaded(record);
+                this.form.trigger("load_record", record);
             }, this);
         }
     });
diff --git a/addons/web_view_editor/static/src/js/view_editor.js b/addons/web_view_editor/static/src/js/view_editor.js
index e65f0ab5d38..40d333afa0f 100644
--- a/addons/web_view_editor/static/src/js/view_editor.js
+++ b/addons/web_view_editor/static/src/js/view_editor.js
@@ -1014,8 +1014,8 @@ instance.web_view_editor.ViewEditor =   instance.web.Widget.extend({
         var action_manager = new instance.web.ActionManager(self);
         $.when(action_manager.do_action(action)).then(function() {
             var controller = action_manager.dialog_widget.views['form'].controller;
-            controller.on_button_cancel.add_last(function(){
-                action_manager.destroy()
+            controller.on("on_button_cancel", self, function(){
+                action_manager.destroy();
             });
             controller.do_save.add_last(function(){
                 action_manager.destroy();