Experiment with notifications

briar-desktop/src/main/kotlin/org/briarproject/briar/desktop/notification/windows/SystemTrayNotifications.kt

+/*
+ * Briar Desktop
+ * Copyright (C) 2021-2022 The Briar Project
+ *
+ * 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 <https://www.gnu.org/licenses/>.
+ */
+package org.briarproject.briar.desktop.notification.windows
+
+import java.awt.AWTException
+import java.awt.Image
+import java.awt.SystemTray
+import java.awt.SystemTray.getSystemTray
+import java.awt.TrayIcon
+import java.awt.event.ActionEvent
+import java.io.IOException
+import javax.imageio.ImageIO
+
+class SystemTrayNotifications private constructor(image: Image?) {
+
+    companion object {
+        private var ourInstance: SystemTrayNotifications? = null
+
+        @get:Throws(AWTException::class)
+        @get:Synchronized
+        val instance: SystemTrayNotifications?
+            get() {
+                if (ourInstance == null && SystemTray.isSupported()) {
+                    ourInstance = SystemTrayNotifications(createImage())
+                }
+                return ourInstance
+            }
+
+        private fun createImage(): Image? {
+            try {
+                Thread.currentThread().contextClassLoader.getResourceAsStream("images/logo_circle.png")
+                    .use { stream -> return ImageIO.read(stream) }
+            } catch (e: IOException) {
+                return null
+            }
+        }
+    }
+
+    private val trayIcon: TrayIcon
+
+    init {
+        val tooltip = "Briar" // NON-NLS
+        trayIcon = TrayIcon(image, tooltip)
+        trayIcon.isImageAutoSize = true
+        getSystemTray().add(trayIcon)
+        trayIcon.addActionListener { _: ActionEvent -> }
+    }
+
+    fun notify(title: String?, description: String?) {
+        trayIcon.displayMessage(title, description, TrayIcon.MessageType.INFO)
+    }
+
+}
\ No newline at end of file

briar-desktop/src/test/kotlin/org/briarproject/briar/desktop/notification/windows/TestJavaNotifications.kt

+/*
+ * Briar Desktop
+ * Copyright (C) 2021-2022 The Briar Project
+ *
+ * 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 <https://www.gnu.org/licenses/>.
+ */
+package org.briarproject.briar.desktop.notification.windows
+
+import kotlin.system.exitProcess
+
+/**
+ * Small program to test notification support for Windows.
+ */
+fun main() {
+    SystemTrayNotifications.instance?.apply {
+        notify("This is the title", "This is the description")
+        Thread.sleep(3000)
+
+        notify("This is the title", "This is the description")
+        Thread.sleep(3000)
+
+        exitProcess(0)
+    }
+}