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// Copyright (c) IPython Development Team.
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// Distributed under the terms of the Modified BSD License.
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define([
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'base/js/namespace',
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'jquery',
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'base/js/utils',
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'base/js/dialog',
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'notebook/js/notificationwidget',
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], function(IPython, $, utils, dialog, notificationwidget) {
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"use strict";
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var NotificationArea = function (selector, options) {
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// Constructor
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//
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// Parameters:
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// selector: string
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// options: dictionary
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// Dictionary of keyword arguments.
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// notebook: Notebook instance
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// events: $(Events) instance
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// save_widget: SaveWidget instance
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this.selector = selector;
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this.events = options.events;
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this.save_widget = options.save_widget;
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this.notebook = options.notebook;
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this.keyboard_manager = options.keyboard_manager;
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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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NotificationArea.prototype.temp_message = function (msg, timeout, css_class) {
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if( css_class == 'danger') {css_class = 'ui-state-error';}
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if( css_class == 'warning') {css_class = 'ui-state-highlight';}
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var tdiv = $('<div>')
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.addClass('notification_widget')
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.addClass(css_class)
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.hide()
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.text(msg);
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$(this.selector).append(tdiv);
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var tmout = Math.max(1500,(timeout||1500));
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tdiv.fadeIn(100);
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setTimeout(function () {
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tdiv.fadeOut(100, function () {tdiv.remove();});
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}, tmout);
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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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NotificationArea.prototype.get_widget = function(name) {
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if(this.widget_dict[name] === undefined) {
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throw('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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NotificationArea.prototype.new_notification_widget = function(name) {
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if(this.widget_dict[name] !== undefined) {
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throw('widget with that name already exists ! ');
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}
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var div = $('<div/>').attr('id','notification_'+name);
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$(this.selector).append(div);
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this.widget_dict[name] = new notificationwidget.NotificationWidget('#notification_'+name);
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return this.widget_dict[name];
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};
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NotificationArea.prototype.init_notification_widgets = function() {
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var that = this;
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var knw = this.new_notification_widget('kernel');
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var $kernel_ind_icon = $("#kernel_indicator_icon");
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var $modal_ind_icon = $("#modal_indicator_icon");
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// Command/Edit mode
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this.events.on('edit_mode.Notebook',function () {
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that.save_widget.update_document_title();
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$modal_ind_icon.attr('class','edit_mode_icon').attr('title','Edit Mode');
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});
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this.events.on('command_mode.Notebook',function () {
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that.save_widget.update_document_title();
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$modal_ind_icon.attr('class','command_mode_icon').attr('title','Command Mode');
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});
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// Implicitly start off in Command mode, switching to Edit mode will trigger event
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$modal_ind_icon.attr('class','command_mode_icon').attr('title','Command Mode');
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// Kernel events
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this.events.on('status_idle.Kernel',function () {
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that.save_widget.update_document_title();
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$kernel_ind_icon.attr('class','kernel_idle_icon').attr('title','Kernel Idle');
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});
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this.events.on('status_busy.Kernel',function () {
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window.document.title='(Busy) '+window.document.title;
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$kernel_ind_icon.attr('class','kernel_busy_icon').attr('title','Kernel Busy');
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});
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this.events.on('status_restarting.Kernel',function () {
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that.save_widget.update_document_title();
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knw.set_message("Restarting kernel", 2000);
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});
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this.events.on('status_dead.Kernel',function () {
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that.save_widget.update_document_title();
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knw.danger("Dead kernel");
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$kernel_ind_icon.attr('class','kernel_dead_icon').attr('title','Kernel Dead');
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});
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this.events.on('status_interrupting.Kernel',function () {
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knw.set_message("Interrupting kernel", 2000);
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});
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// Start the kernel indicator in the busy state, and send a kernel_info request.
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// When the kernel_info reply arrives, the kernel is idle.
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$kernel_ind_icon.attr('class','kernel_busy_icon').attr('title','Kernel Busy');
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this.events.on('status_started.Kernel', function (evt, data) {
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knw.info("Websockets Connected", 500);
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that.events.trigger('status_busy.Kernel');
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data.kernel.kernel_info(function () {
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that.events.trigger('status_idle.Kernel');
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});
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});
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this.events.on('status_dead.Kernel',function () {
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var msg = 'The kernel has died, and the automatic restart has failed.' +
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' It is possible the kernel cannot be restarted.' +
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' If you are not able to restart the kernel, you will still be able to save' +
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' the notebook, but running code will no longer work until the notebook' +
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' is reopened.';
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dialog.modal({
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title: "Dead kernel",
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body : msg,
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keyboard_manager: that.keyboard_manager,
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notebook: that.notebook,
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buttons : {
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"Manual Restart": {
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class: "btn-danger",
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click: function () {
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that.events.trigger('status_restarting.Kernel');
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that.notebook.start_kernel();
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}
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},
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"Don't restart": {}
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}
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});
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});
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this.events.on('websocket_closed.Kernel', function (event, data) {
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var kernel = data.kernel;
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var ws_url = data.ws_url;
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var early = data.early;
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var msg;
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$kernel_ind_icon
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.attr('class', 'kernel_disconnected_icon')
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.attr('title', 'No Connection to Kernel');
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if (!early) {
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knw.warning('Reconnecting');
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setTimeout(function () {
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kernel.start_channels();
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}, 5000);
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return;
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}
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console.log('WebSocket connection failed: ', ws_url);
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msg = "A WebSocket connection could not be established." +
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" You will NOT be able to run code. Check your" +
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" network connection or notebook server configuration.";
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dialog.modal({
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title: "WebSocket connection failed",
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body: msg,
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keyboard_manager: that.keyboard_manager,
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notebook: that.notebook,
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buttons : {
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"OK": {},
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"Reconnect": {
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click: function () {
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knw.warning('Reconnecting');
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setTimeout(function () {
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kernel.start_channels();
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}, 5000);
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}
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}
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}
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});
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});
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var nnw = this.new_notification_widget('notebook');
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// Notebook events
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this.events.on('notebook_loading.Notebook', function () {
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nnw.set_message("Loading notebook",500);
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});
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this.events.on('notebook_loaded.Notebook', function () {
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nnw.set_message("Notebook loaded",500);
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});
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this.events.on('notebook_saving.Notebook', function () {
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nnw.set_message("Saving notebook",500);
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});
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this.events.on('notebook_saved.Notebook', function () {
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nnw.set_message("Notebook saved",2000);
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});
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this.events.on('notebook_save_failed.Notebook', function (evt, xhr, status, data) {
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nnw.warning(data || "Notebook save failed");
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});
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// Checkpoint events
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this.events.on('checkpoint_created.Notebook', function (evt, data) {
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var msg = "Checkpoint created";
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if (data.last_modified) {
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var d = new Date(data.last_modified);
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msg = msg + ": " + d.format("HH:MM:ss");
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}
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nnw.set_message(msg, 2000);
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});
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this.events.on('checkpoint_failed.Notebook', function () {
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nnw.warning("Checkpoint failed");
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});
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this.events.on('checkpoint_deleted.Notebook', function () {
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nnw.set_message("Checkpoint deleted", 500);
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});
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this.events.on('checkpoint_delete_failed.Notebook', function () {
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nnw.warning("Checkpoint delete failed");
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});
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this.events.on('checkpoint_restoring.Notebook', function () {
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nnw.set_message("Restoring to checkpoint...", 500);
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});
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this.events.on('checkpoint_restore_failed.Notebook', function () {
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nnw.warning("Checkpoint restore failed");
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});
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// Autosave events
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this.events.on('autosave_disabled.Notebook', function () {
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nnw.set_message("Autosave disabled", 2000);
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});
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this.events.on('autosave_enabled.Notebook', function (evt, interval) {
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nnw.set_message("Saving every " + interval / 1000 + "s", 1000);
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});
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};
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IPython.NotificationArea = NotificationArea;
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return {'NotificationArea': NotificationArea};
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});
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