Add "Leave room" button to sidebar

BUG: 484425

src/CMakeLists.txt

@@ -288,6 +288,7 @@ qt_add_qml_module(neochat URI org.kde.neochat NO_PLUGIN
         qml/JoinRoomDialog.qml
         qml/ConfirmUrlDialog.qml
         qml/AccountSwitchDialog.qml
+        qml/ConfirmLeaveDialog.qml
     RESOURCES
         qml/confetti.png
         qml/glowdot.png

src/qml/ConfirmLeaveDialog.qml

@@ -0,0 +1,32 @@
+// SPDX-FileCopyrightText: 2024 Tobias Fella <tobias.fella@kde.org>
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+import QtQuick
+import QtQuick.Controls as QQC2
+
+import org.kde.kirigami as Kirigami
+import org.kde.kirigamiaddons.formcard as FormCard
+
+import org.kde.neochat
+
+Kirigami.Dialog {
+    id: root
+
+    required property NeoChatRoom room
+
+    width: Kirigami.Units.gridUnit * 24
+
+    title: i18nc("@title:dialog", "Confirm Leaving Room")
+
+    contentItem: FormCard.FormTextDelegate {
+        text: root.room ? i18nc("Do you really want to leave <room name>?", "Do you really want to leave %1?", root.room.displayName) : ""
+    }
+
+    customFooterActions: [
+        Kirigami.Action {
+            text: i18nc("@action:button", "Leave Room")
+            icon.name: "arrow-left"
+            onTriggered: RoomManager.leaveRoom(root.room)
+        }
+    ]
+}

src/qml/RoomInformation.qml

@@ -115,6 +115,20 @@ QQC2.ScrollView {
                 Layout.fillWidth: true
             }
 
+            Delegates.RoundedItemDelegate {
+                id: leaveButton
+                icon.name: "arrow-left"
+                text: i18nc("@action:button", "Leave this room")
+
+                Layout.fillWidth: true
+
+                onClicked: {
+                    Qt.createComponent('org.kde.neochat', 'ConfirmLeaveDialog.qml').createObject(root.QQC2.ApplicationWindow.window, {
+                        room: root.room
+                    }).open();
+                }
+            }
+
             Kirigami.ListSectionHeader {
                 label: i18n("Members")
                 activeFocusOnTab: false