//---------------------------------------------------------------------------- // Copyright (C) 2013 The IPython Development Team // // Distributed under the terms of the BSD License. The full license is in // the file COPYING, distributed as part of this software. //---------------------------------------------------------------------------- //============================================================================ // WidgetModel, WidgetView, and WidgetManager //============================================================================ /** * Base Widget classes * @module IPython * @namespace IPython * @submodule widget */ (function () { "use strict"; // Use require.js 'define' method so that require.js is intelligent enough to // syncronously load everything within this file when it is being 'required' // elsewhere. define(["components/underscore/underscore-min", "components/backbone/backbone-min", ], function (underscore, backbone) { //-------------------------------------------------------------------- // WidgetManager class //-------------------------------------------------------------------- var WidgetManager = function () { this.comm_manager = null; this.widget_model_types = {}; this.widget_view_types = {}; this._model_instances = {}; var that = this; Backbone.sync = function (method, model, options, error) { var result = model._handle_sync(method, options); if (options.success) { options.success(result); } }; }; WidgetManager.prototype.attach_comm_manager = function (comm_manager) { this.comm_manager = comm_manager; // Register already register widget model types with the comm manager. for (var widget_model_name in this.widget_model_types) { this.comm_manager.register_target(widget_model_name, $.proxy(this._handle_com_open, this)); } }; WidgetManager.prototype.register_widget_model = function (widget_model_name, widget_model_type) { // Register the widget with the comm manager. Make sure to pass this object's context // in so `this` works in the call back. if (this.comm_manager !== null) { this.comm_manager.register_target(widget_model_name, $.proxy(this._handle_com_open, this)); } this.widget_model_types[widget_model_name] = widget_model_type; }; WidgetManager.prototype.register_widget_view = function (widget_view_name, widget_view_type) { this.widget_view_types[widget_view_name] = widget_view_type; }; WidgetManager.prototype.get_msg_cell = function (msg_id) { if (IPython.notebook !== undefined && IPython.notebook !== null) { return IPython.notebook.get_msg_cell(msg_id); } }; WidgetManager.prototype.get_model = function (widget_id) { var model = this._model_instances[widget_id]; if (model !== undefined && model.id == widget_id) { return model; } return null; }; WidgetManager.prototype.get_kernel = function () { if (this.comm_manager === null) { return null; } else { return this.comm_manager.kernel; } }; WidgetManager.prototype.on_create_widget = function (callback) { this._create_widget_callback = callback; }; WidgetManager.prototype._handle_create_widget = function (widget_model) { if (this._create_widget_callback) { try { this._create_widget_callback(widget_model); } catch (e) { console.log("Exception in WidgetManager callback", e, widget_model); } } }; WidgetManager.prototype._handle_com_open = function (comm, msg) { var widget_type_name = msg.content.target_name; var widget_model = new this.widget_model_types[widget_type_name](this, comm.comm_id, comm); this._model_instances[comm.comm_id] = widget_model; this._handle_create_widget(widget_model); }; //-------------------------------------------------------------------- // Init code //-------------------------------------------------------------------- IPython.WidgetManager = WidgetManager; if (IPython.widget_manager === undefined || IPython.widget_manager === null) { IPython.widget_manager = new WidgetManager(); } return IPython.widget_manager; }); }());