view browser_side/notification.py @ 396:a71fcc27f231

browser_side: small improvements for ListManager
author souliane <souliane@mailoo.org>
date Tue, 11 Mar 2014 10:45:52 +0100
parents 835a8ae799e7
children f9130176bc8d
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from __pyjamas__ import JS


class Notification(object):
    """
    If the browser supports it, the user allowed it to and the tab is in the
    background, send desktop notifications on messages.

    Requires both Web Notifications and Page Visibility API.
    """

    def __init__(self):
        JS("""
        this.enabled = false;

        if (!('hidden' in document))
            document.hidden = false;

        if (!('Notification' in window))
            return;

        if (Notification.permission === 'granted')
            this.enabled = true;

        else if (Notification.permission === 'default') {
            Notification.requestPermission(function(permission){
                if (permission !== 'granted')
                    return;

                this.enabled = true;
            });
        }
        """)

    def notify(self, title, body, icon='/media/icons/apps/48/sat.png'):
        JS("""
        if (this.enabled && document.hidden) {
            notification = Notification(title, {body: body, icon: icon});

            // Probably won’t work, but it doesn’t hurt to try.
            notification.addEventListener('click', function() {
                window.focus();
            });
        }
        """)