84 lines
2.6 KiB
JavaScript
84 lines
2.6 KiB
JavaScript
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// Copyright (c) Jupyter Development Team.
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// Distributed under the terms of the Modified BSD License.
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define([
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'jquery',
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'base/js/notificationwidget',
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], function($, notificationwidget) {
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"use strict";
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// store reference to the NotificationWidget class
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var NotificationWidget = notificationwidget.NotificationWidget;
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/**
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* Construct the NotificationArea object. Options are:
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* events: $(Events) instance
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* save_widget: SaveWidget instance
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* notebook: Notebook instance
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* keyboard_manager: KeyboardManager instance
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*
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* @constructor
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* @param {string} selector - a jQuery selector string for the
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* notification area element
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* @param {Object} [options] - a dictionary of keyword arguments.
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*/
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var NotificationArea = function (selector, options) {
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this.selector = selector;
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this.events = options.events;
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if (this.selector !== undefined) {
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this.element = $(selector);
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}
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this.widget_dict = {};
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};
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/**
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* Get a widget by name, creating it if it doesn't exist.
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*
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* @method widget
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* @param {string} name - the widget name
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*/
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NotificationArea.prototype.widget = function (name) {
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if (this.widget_dict[name] === undefined) {
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return this.new_notification_widget(name);
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}
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return this.get_widget(name);
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};
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/**
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* Get a widget by name, throwing an error if it doesn't exist.
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*
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* @method get_widget
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* @param {string} name - the widget name
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*/
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NotificationArea.prototype.get_widget = function (name) {
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if(this.widget_dict[name] === undefined) {
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throw new Error('no widgets with this name');
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}
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return this.widget_dict[name];
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};
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/**
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* Create a new notification widget with the given name. The
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* widget must not already exist.
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*
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* @method new_notification_widget
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* @param {string} name - the widget name
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*/
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NotificationArea.prototype.new_notification_widget = function (name) {
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if (this.widget_dict[name] !== undefined) {
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throw new Error('widget with that name already exists!');
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}
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// create the element for the notification widget and add it
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// to the notification aread element
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var div = $('<div/>').attr('id', 'notification_' + name);
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$(this.selector).append(div);
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// create the widget object and return it
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this.widget_dict[name] = new NotificationWidget('#notification_' + name);
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return this.widget_dict[name];
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};
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return {'NotificationArea': NotificationArea};
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});
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