Node / meshtastic / Meshtastic-Android / files / core / navigation / src / commonMain / kotlin / org / meshtastic / core / navigation / NavBackStackExt.kt

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T8b949e/*

* Copyright (c) 2026 Meshtastic LLC

*

* This program is free software: you can redistribute it and/or modify

* it under the terms of the GNU 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 General Public License for more details.

*

* You should have received a copy of the GNU General Public License

* along with this program. If not, see <https://www.gnu.org/licenses/>.

*/

Tff7b72package T7ee787org.meshtastic.core.navigation

Tff7b72import T7ee787androidx.navigation3.runtime.NavKey

T8b949e/**

* Replaces the last entry in the back stack with the given route. If the back stack is empty, it simply adds the route.

*/

Tff7b72fun Td2a8ffMutableListTff7b72<Te6edf3NavKeyTff7b72>Tb4b4b4.Te6edf3replaceLastTb4b4b4(Te6edf3routeTb4b4b4: Te6edf3NavKeyTb4b4b4) Tb4b4b4{

Tff7b72if Tb4b4b4(Te6edf3isNotEmptyTb4b4b4(Tb4b4b4)Tb4b4b4) Tb4b4b4{

Tff7b72if Tb4b4b4(Tff7b72thisTff7b72[Te6edf3lastIndexTff7b72] Tff7b72!Tff7b72= Te6edf3routeTb4b4b4) Tb4b4b4{

Tff7b72thisTff7b72[Te6edf3lastIndexTff7b72] Tff7b72= Te6edf3route

Tb4b4b4}

Tb4b4b4} Tff7b72else Tb4b4b4{

Te6edf3addTb4b4b4(Te6edf3routeTb4b4b4)

Tb4b4b4}

Tb4b4b4}

T8b949e/**

* Replaces the entire back stack with the given routes in a way that minimizes structural changes and prevents the back

* stack from temporarily becoming empty.

*/

Tff7b72fun Td2a8ffMutableListTff7b72<Te6edf3NavKeyTff7b72>Tb4b4b4.Te6edf3replaceAllTb4b4b4(Te6edf3routesTb4b4b4: Te6edf3ListTff7b72<Te6edf3NavKeyTff7b72>Tb4b4b4) Tb4b4b4{

Tff7b72if Tb4b4b4(Te6edf3routesTb4b4b4.Te6edf3isEmptyTb4b4b4(Tb4b4b4)Tb4b4b4) Tb4b4b4{

Te6edf3clearTb4b4b4(Tb4b4b4)

Tff7b72return

Tb4b4b4}

Tff7b72for Tb4b4b4(Te6edf3i Tff7b72in Te6edf3routesTb4b4b4.Te6edf3indicesTb4b4b4) Tb4b4b4{

Tff7b72if Tb4b4b4(Te6edf3i Tff7b72< Te6edf3sizeTb4b4b4) Tb4b4b4{

T8b949e// Only mutate if the route actually changed, protecting Nav3's internal state matching.

Tff7b72if Tb4b4b4(Tff7b72thisTff7b72[Te6edf3iTff7b72] Tff7b72!Tff7b72= Te6edf3routesTff7b72[Te6edf3iTff7b72]Tb4b4b4) Tb4b4b4{

Tff7b72thisTff7b72[Te6edf3iTff7b72] Tff7b72= Te6edf3routesTff7b72[Te6edf3iTff7b72]

Tb4b4b4}

Tb4b4b4} Tff7b72else Tb4b4b4{

Te6edf3addTb4b4b4(Te6edf3routesTff7b72[Te6edf3iTff7b72]Tb4b4b4)

Tb4b4b4}

Tb4b4b4}

Tff7b72while Tb4b4b4(Te6edf3size Tff7b72> Te6edf3routesTb4b4b4.Te6edf3sizeTb4b4b4) Tb4b4b4{

Te6edf3removeAtTb4b4b4(Te6edf3lastIndexTb4b4b4)

Tb4b4b4}

Tb4b4b4}