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annotate src/browser/sat_browser/notification.py @ 712:bf562fb9c273

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server_side: use Jinja2 template engine for static blog
author souliane <souliane@mailoo.org>
date Mon, 13 Jul 2015 18:11:38 +0200
parents e11e34ac0f67
children 03e9fe91081c
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1 from __pyjamas__ import JS, wnd
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2 from sat.core.log import getLogger
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3 log = getLogger(__name__)
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4 from sat.core.i18n import _
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5
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6 from pyjamas import Window
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7 from pyjamas.Timer import Timer
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8
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9 import dialog
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10
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11 TIMER_DELAY = 5000
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12
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13
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14 class Notification(object):
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15 """
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16 If the browser supports it, the user allowed it to and the tab is in the
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17 background, send desktop notifications on messages.
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18
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19 Requires both Web Notifications and Page Visibility API.
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20 """
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21
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22 def __init__(self):
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23 self.enabled = False
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24 user_agent = None
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25 notif_permission = None
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26 JS("""
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27 if (!('hidden' in document))
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28 document.hidden = false;
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29
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30 user_agent = navigator.userAgent
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31
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32 if (!('Notification' in window))
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33 return;
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34
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35 notif_permission = Notification.permission
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36
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37 if (Notification.permission === 'granted')
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38 this.enabled = true;
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39
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40 else if (Notification.permission === 'default') {
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41 Notification.requestPermission(function(permission){
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42 if (permission !== 'granted')
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43 return;
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44
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45 self.enabled = true; //need to use self instead of this
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46 });
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47 }
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48 """)
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49
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50 if "Chrome" in user_agent and notif_permission not in ['granted', 'denied']:
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51 self.user_agent = user_agent
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52 self._installChromiumWorkaround()
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53
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54 wnd().onfocus = self.onFocus
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55 # wnd().onblur = self.onBlur
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56 self._notif_count = 0
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57 self._orig_title = Window.getTitle()
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58
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59 def _installChromiumWorkaround(self):
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60 # XXX: Workaround for Chromium behaviour, it's doens't manage requestPermission on onLoad event
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61 # see https://code.google.com/p/chromium/issues/detail?id=274284
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62 # FIXME: need to be removed if Chromium behaviour changes
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63 try:
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64 version_full = [s for s in self.user_agent.split() if "Chrome" in s][0].split('/')[1]
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65 version = int(version_full.split('.')[0])
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66 except (IndexError, ValueError):
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67 log.warning("Can't find Chromium version")
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68 version = 0
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69 log.info("Chromium version: %d" % (version,))
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70 if version < 22:
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71 log.info("Notification use the old prefixed version or are unmanaged")
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72 return
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73 if version < 32:
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74 dialog.InfoDialog(_("Notifications activation for Chromium"), _('You need to activate notifications manually for your Chromium version.<br/>To activate notifications, click on the favicon on the left of the address bar')).show()
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75 return
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76
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77 log.info("==> Installing Chromium notifications request workaround <==")
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78 self._old_click = wnd().onclick
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79 wnd().onclick = self._chromiumWorkaround
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80
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81 def _chromiumWorkaround(self):
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82 log.info("Activating workaround")
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83 JS("""
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84 Notification.requestPermission(function(permission){
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85 if (permission !== 'granted')
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86 return;
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87 self.enabled = true; //need to use self instead of this
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88 });
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89 """)
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90 wnd().onclick = self._old_click
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91
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92 def onFocus(self, event=None):
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93 Window.setTitle(self._orig_title)
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94 self._notif_count = 0
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95
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96 # def onBlur(self, event=None):
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97 # pass
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98
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99 def isHidden(self):
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100 JS("""return document.hidden;""")
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101
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102 def _notify(self, title, body, icon):
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103 if not self.enabled:
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104 return
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105 notification = None
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106 JS("""
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107 notification = new Notification(title, {body: body, icon: icon});
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108 // Probably won’t work, but it doesn’t hurt to try.
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109 notification.addEventListener('click', function() {
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110 window.focus();
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111 });
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112 """)
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113 notification.onshow = lambda: Timer(TIMER_DELAY, lambda timer: notification.close())
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114
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115 def highlightTab(self):
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116 self._notif_count += 1
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117 Window.setTitle("%s (%d)" % (self._orig_title, self._notif_count))
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118
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119 def notify(self, title, body, icon='/media/icons/apps/48/sat.png'):
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120 if self.isHidden():
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121 self._notify(title, body, icon)
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122 self.highlightTab()