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Diffstat (limited to 'radicale_infcloud/web/notifications.js')
| -rw-r--r-- | radicale_infcloud/web/notifications.js | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/radicale_infcloud/web/notifications.js b/radicale_infcloud/web/notifications.js new file mode 100644 index 0000000..06670a5 --- /dev/null +++ b/radicale_infcloud/web/notifications.js @@ -0,0 +1,127 @@ +/* +vim: set et ts=3 sw=3 sts=3: +InfCloud - the open source CalDAV/CardDAV Web Client +Copyright (C) 2011-2023 + B. Stack <bgstack15@gmail.com> + +This program is free software: you can redistribute it and/or modify +it under the terms of the GNU Affero General Public License as +published by the Free Software Foundation, either version 3 of the +License, or (at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU Affero General Public License for more details. + +You should have received a copy of the GNU Affero General Public License +along with this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +// InfCloud/CalDAVZap location for this image +const img_cal = "images/banner_calendar.svg"; +const notification_attempts = 10; +const notification_ms = 200; +// Due to how browsers/css work with colors, you can pass #000000 or web safe color names. +var colors = Array("red","orange","yellow","green","blue","purple","black","white","brown"); + +function colorizeSvg(inSvg, oldColor, newColor) { + // In case we have to do more than `s//g` in the future. + return inSvg.replaceAll(oldColor, newColor); +} + +function SendColorizedNotification(_title, _body, _icon, _tag, _color) { + // given _icon as path on server, get contents and adjust the main color in it to desired color. + // The 585858 is the specific color of the calendar.svg we intend to replace. + const xhr = new XMLHttpRequest(); + xhr.open("GET",_icon); + xhr.onload = () => { + // Ref: https://stackoverflow.com/questions/28450471/convert-inline-svg-to-base64-string + newSvg = colorizeSvg(xhr.responseText,"#585858",_color); + encodedData = window.btoa(newSvg); // turn it into the base64 stream + encodedData = "data:image/svg+xml;base64," + encodedData; // prepend the type of stream + SendNotification(_title, _body, encodedData, _tag, _color); + } + xhr.send(); +} + +function SendNotification(_title, _body, _icon, _tag) { + // From: https://developer.mozilla.org/en-US/docs/Web/API/notification + if (!("Notification" in window)) { + // Check if the browser supports notifications + alert("This browser does not support desktop notification"); + } else if (Notification.permission === "granted") { + // Check whether notification permissions have already been granted; + // if so, create a notification + console.log("trying option 1"); + const notification = new Notification(String(_title), { tag: _tag, body: _body, icon: _icon }); + // … + } else if (Notification.permission !== "denied") { + // We need to ask the user for permission + Notification.requestPermission().then((permission) => { + // If the user accepts, let's create a notification + if (permission === "granted") { + console.log("trying option 2"); + const notification = new Notification(String(_title), { tag: _tag, body: _body, icon: _icon }); + // … + } + }); + } + // At last, if the user has denied notifications, and you + // want to be respectful there is no need to bother them anymore. + console.log("trying option 3"); +} + +function SendNotificationManyTimes(_title, _body, _icon, _tag) { + // From: https://developer.mozilla.org/en-US/docs/Web/API/Notifications_API/Using_the_Notifications_API + if (Notification?.permission === "granted") { + // If the user agreed to get notified + // Let's try to send ten notifications + let i = 0; + // Using an interval cause some browsers (including Firefox) are blocking notifications if there are too much in a certain time. + const interval = setInterval(() => { + // Thanks to the tag, we should only see the "Hi! 9" notification + const n = new Notification(String(_title), { tag: _tag, body: _body, icon: _icon }); + //const n = new Notification(`Hi! breakfast ${i}`, { tag: "soManyNotification", body: "this is body?", icon: img }); + if (i === (notification_attempts-1)) { + clearInterval(interval); + } + i++; + }, notification_ms); + } else if (Notification && Notification.permission !== "denied") { + // If the user hasn't told if they want to be notified or not + // Note: because of Chrome, we are not sure the permission property + // is set, therefore it's unsafe to check for the "default" value. + Notification.requestPermission().then((status) => { + // If the user said okay + if (status === "granted") { + let i = 0; + // Using an interval cause some browsers (including Firefox) are blocking notifications if there are too much in a certain time. + const interval = setInterval(() => { + // Thanks to the tag, we should only see the "Hi! 9" notification + const n = new Notification(String(_title), { tag: _tag, body: _body, icon: _icon }); + if (i === (notification_attempts-1)) { + clearInterval(interval); + } + i++; + }, notification_ms); + } else { + // Otherwise, we can fallback to a regular modal alert + alert(String(_title)+": "+String(_body)); + } + }); + } else { + // If the user refuses to get notified, we can fallback to a regular modal alert + alert(String(_title)+": "+String(_body)); + } +} + +function getRandomColor() { + return colors[Math.floor(Math.random()*colors.length)]; +} + +function clickTestNotification() +{ + console.log("inside the click listener function"); + SendColorizedNotification("sample calendar appointment","in 0 minutes",img_cal,"",getRandomColor()); +} |