IPython/frontend/html/notebook/static/js/notificationwidget.js

//----------------------------------------------------------------------------
//  Copyright (C) 2008-2011  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.
//----------------------------------------------------------------------------

//============================================================================
// Notification widget
//============================================================================

var IPython = (function (IPython) {

    var utils = IPython.utils;


    var NotificationWidget = function (selector) {
        this.selector = selector;
        this.timeout = null;
        this.busy = false;
        if (this.selector !== undefined) {
            this.element = $(selector);
            this.style();
            this.bind_events();
        }
    };


    NotificationWidget.prototype.style = function () {
        this.element.addClass('ui-widget ui-widget-content ui-corner-all');
        this.element.addClass('border-box-sizing');
    };


    NotificationWidget.prototype.bind_events = function () {
        var that = this;
        // Kernel events
        $([IPython.events]).on('status_idle.Kernel',function () {
            IPython.save_widget.update_document_title();
            if (that.get_message() === 'Kernel busy') {
                that.element.fadeOut(100, function () {
                    that.element.html('');
                });
            };
        });
        $([IPython.events]).on('status_busy.Kernel',function () {
            window.document.title='(Busy) '+window.document.title;
            that.set_message("Kernel busy");
        });
        $([IPython.events]).on('status_restarting.Kernel',function () {
            that.set_message("Restarting kernel",500);
        });
        $([IPython.events]).on('status_interrupting.Kernel',function () {
            that.set_message("Interrupting kernel",500);
        });
        $([IPython.events]).on('status_dead.Kernel',function () {
            IPython.notebook.start_kernel();
            that.set_message("Restarting kernel",500);
            var dialog = $('<div/>');
            dialog.html('The kernel has died and is being restarted.');
            $(document).append(dialog);
            dialog.dialog({
                resizable: false,
                modal: true,
                title: "Dead kernel",
                buttons : {
                    "OK": function () {
                        $(this).dialog('close');
                    }
                }
            });
        });
        // Notebook events
        $([IPython.events]).on('notebook_loading.Notebook', function () {
            that.set_message("Loading notebook",500);
        });
        $([IPython.events]).on('notebook_loaded.Notebook', function () {
            that.set_message("Notebook loaded",500);
        });
        $([IPython.events]).on('notebook_saving.Notebook', function () {
            that.set_message("Saving notebook",500);
        });
        $([IPython.events]).on('notebook_saved.Notebook', function () {
            that.set_message("Notebook saved",500);
        });
        $([IPython.events]).on('notebook_save_failed.Notebook', function () {
            that.set_message("Notebook save failed",500);
        });
    };


    NotificationWidget.prototype.set_message = function (msg, timeout) {
        var that = this;
        this.element.html(msg);
        this.element.fadeIn(100);
        if (this.timeout !== null) {
            clearTimeout(this.timeout);
            this.timeout = null;
        };
        if (timeout !== undefined) {
            this.timeout = setTimeout(function () {
                that.element.fadeOut(100, function () {that.element.html('');});
                that.timeout = null;
            }, timeout)
        };
    };


    NotificationWidget.prototype.get_message = function () {
        return this.element.html();
    };


    IPython.NotificationWidget = NotificationWidget;

    return IPython;

}(IPython));