Migrate Manga Screen Long Click Range Selection

CHANGELOG.md

@@ -16,6 +16,7 @@ The format is a modified version of [Keep a Changelog](https://keepachangelog.co
 
 ### Improved
 - Show informative error when trying to add unapproved titles to list on MAL ([@MajorTanya](https://github.com/MajorTanya)) ([#3155](https://github.com/mihonapp/mihon/pull/3155))
+- Add long click range selection on migrate manga screen ([@NarwhalHorns](https://github.com/NarwhalHorns)) ([#3171](https://github.com/mihonapp/mihon/pull/3171))
 
 ## [v0.19.7] - 2026-03-23
 Same as v0.19.6

app/src/main/java/eu/kanade/presentation/manga/components/BaseMangaListItem.kt

@@ -1,6 +1,6 @@
 package eu.kanade.presentation.manga.components
 
-import androidx.compose.foundation.clickable
+import androidx.compose.foundation.combinedClickable
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.RowScope
@@ -22,14 +22,18 @@ fun BaseMangaListItem(
     manga: Manga,
     modifier: Modifier = Modifier,
     onClickItem: () -> Unit = {},
+    onLongClickItem: () -> Unit = {},
     onClickCover: () -> Unit = onClickItem,
     cover: @Composable RowScope.() -> Unit = { defaultCover(manga, onClickCover) },
     actions: @Composable RowScope.() -> Unit = {},
     content: @Composable RowScope.() -> Unit = { defaultContent(manga) },
 ) {
     Row(
         modifier = modifier
-            .clickable(onClick = onClickItem)
+            .combinedClickable(
+                onClick = onClickItem,
+                onLongClick = onLongClickItem,
+            )
             .height(56.dp)
             .padding(horizontal = MaterialTheme.padding.medium),
         verticalAlignment = Alignment.CenterVertically,

app/src/main/java/eu/kanade/tachiyomi/ui/browse/migration/manga/MigrateMangaScreen.kt

@@ -108,6 +108,7 @@ data class MigrateMangaScreen(
                 contentPadding = contentPadding,
                 state = state,
                 onClickItem = screenModel::toggleSelection,
+                onLongClickItem = screenModel::toggleRangeSelection,
                 onClickCover = { navigator.push(MangaScreen(it.id)) },
             )
         }
@@ -129,6 +130,7 @@ data class MigrateMangaScreen(
         contentPadding: PaddingValues,
         state: MigrateMangaScreenModel.State,
         onClickItem: (Manga) -> Unit,
+        onLongClickItem: (Manga) -> Unit,
         onClickCover: (Manga) -> Unit,
     ) {
         FastScrollLazyColumn(
@@ -140,6 +142,7 @@ data class MigrateMangaScreen(
                     manga = manga,
                     isSelected = manga.id in state.selection,
                     onClickItem = onClickItem,
+                    onLongClickItem = onLongClickItem,
                     onClickCover = onClickCover,
                 )
             }
@@ -151,13 +154,15 @@ data class MigrateMangaScreen(
         manga: Manga,
         isSelected: Boolean,
         onClickItem: (Manga) -> Unit,
+        onLongClickItem: (Manga) -> Unit,
         onClickCover: (Manga) -> Unit,
         modifier: Modifier = Modifier,
     ) {
         BaseMangaListItem(
             modifier = modifier.selectedBackground(isSelected),
             manga = manga,
             onClickItem = { onClickItem(manga) },
+            onLongClickItem = { onLongClickItem(manga) },
             onClickCover = { onClickCover(manga) },
         )
     }

app/src/main/java/eu/kanade/tachiyomi/ui/browse/migration/manga/MigrateMangaScreenModel.kt

@@ -67,6 +67,27 @@ class MigrateMangaScreenModel(
         }
     }
 
+    fun toggleRangeSelection(item: Manga) {
+        mutableState.update { state ->
+            val newSelection = state.selection.mutate { list ->
+                val lastSelectedId = list.lastOrNull()
+                val lastSelectedManga = state.titles.find { it.id == lastSelectedId }
+                list.add(item.id)
+                val lastMangaIndex = state.titles.indexOf(lastSelectedManga)
+                val curMangaIndex = state.titles.indexOf(item)
+
+                val selectionRange = when {
+                    lastMangaIndex < curMangaIndex -> lastMangaIndex..curMangaIndex
+                    curMangaIndex < lastMangaIndex -> curMangaIndex..lastMangaIndex
+                    // We shouldn't reach this point
+                    else -> return@mutate
+                }
+                selectionRange.mapNotNull { state.titles[it].id }.let(list::addAll)
+            }
+            state.copy(selection = newSelection)
+        }
+    }
+
     fun clearSelection() {
         mutableState.update { it.copy(selection = emptySet()) }
     }