Add auto-away feature for Linux X11

src/gui/IdleManager.qml

@@ -0,0 +1,45 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
+
+import QtQuick 2.12
+import CppUtils 0.1
+import "."
+
+Timer {
+    readonly property ListModel accounts: ModelStore.get("accounts")
+    readonly property var accountsSet: new Set()
+
+
+    function setPresence(userId, presence) {
+        py.callClientCoro(userId, "set_presence", [presence, undefined, false])
+    }
+
+
+    interval: 1000
+    running: window.settings.beUnavailableAfterSecondsIdle > 0
+    repeat: true
+
+    onTriggered: {
+        let changes = false
+
+        const beUnavailable =
+            CppUtils.idleMilliseconds() / 1000 >=
+            window.settings.beUnavailableAfterSecondsIdle
+
+        for (let i = 0; i < accounts.count; i++) {
+            const account = accounts.get(i)
+
+            if (beUnavailable && account.presence === "online") {
+                setPresence(account.id, "unavailable")
+                accountsSet.add(account.id)
+                changes = true
+
+            } else if (! beUnavailable && accountsSet.has(account.id)) {
+                setPresence(account.id, "online")
+                accountsSet.delete(account.id)
+                changes = true
+            }
+        }
+
+        if (changes) accountsSetChanged()
+    }
+}

src/gui/UI.qml

@@ -33,6 +33,7 @@ Item {
     readonly property alias pageLoader: pageLoader
     readonly property alias pressAnimation: pressAnimation
     readonly property alias fontMetrics: fontMetrics
+    readonly property alias idleManager: idleManager
 
 
     function reloadSettings() {
@@ -96,6 +97,10 @@ Item {
         visible: false
     }
 
+    IdleManager {
+        id: idleManager
+    }
+
     LinearGradient {
         id: mainUIGradient
         visible: ! image.visible