Issue #18774: Move SelectionInteractor to new package

The interactor and holder are useful outside of the `library` package, so
let's move it up a package level for other components.

app/src/main/java/org/mozilla/fenix/library/LibrarySiteItemView.kt

@@ -19,34 +19,8 @@ import org.mozilla.fenix.R
 import org.mozilla.fenix.ext.components
 import org.mozilla.fenix.ext.increaseTapArea
 import org.mozilla.fenix.ext.loadIntoView
-
-/**
- * Interactor for items that can be selected on the bookmarks and history screens.
- */
-interface SelectionInteractor<T> {
-    /**
-     * Called when an item is tapped to open it.
-     * @param item the tapped item to open.
-     */
-    fun open(item: T)
-
-    /**
-     * Called when an item is long pressed and selection mode is started,
-     * or when selection mode has already started an an item is tapped.
-     * @param item the item to select.
-     */
-    fun select(item: T)
-
-    /**
-     * Called when a selected item is tapped in selection mode and should no longer be selected.
-     * @param item the item to deselect.
-     */
-    fun deselect(item: T)
-}
-
-interface SelectionHolder<T> {
-    val selectedItems: Set<T>
-}
+import org.mozilla.fenix.selection.SelectionHolder
+import org.mozilla.fenix.selection.SelectionInteractor
 
 class LibrarySiteItemView @JvmOverloads constructor(
     context: Context,

app/src/main/java/org/mozilla/fenix/library/bookmarks/BookmarkFragmentStore.kt

@@ -9,7 +9,7 @@ import mozilla.components.concept.storage.BookmarkNode
 import mozilla.components.lib.state.Action
 import mozilla.components.lib.state.State
 import mozilla.components.lib.state.Store
-import org.mozilla.fenix.library.SelectionHolder
+import org.mozilla.fenix.selection.SelectionHolder
 
 class BookmarkFragmentStore(
     initialState: BookmarkFragmentState

app/src/main/java/org/mozilla/fenix/library/bookmarks/BookmarkView.kt

@@ -16,7 +16,7 @@ import mozilla.components.support.base.feature.UserInteractionHandler
 import org.mozilla.fenix.NavGraphDirections
 import org.mozilla.fenix.R
 import org.mozilla.fenix.library.LibraryPageView
-import org.mozilla.fenix.library.SelectionInteractor
+import org.mozilla.fenix.selection.SelectionInteractor
 
 /**
  * Interface for the Bookmarks view.

app/src/main/java/org/mozilla/fenix/library/downloads/DownloadAdapter.kt

@@ -8,7 +8,7 @@ import android.view.LayoutInflater
 import android.view.ViewGroup
 import androidx.recyclerview.widget.DiffUtil
 import androidx.recyclerview.widget.RecyclerView
-import org.mozilla.fenix.library.SelectionHolder
+import org.mozilla.fenix.selection.SelectionHolder
 import org.mozilla.fenix.library.downloads.viewholders.DownloadsListItemViewHolder
 
 class DownloadAdapter(

app/src/main/java/org/mozilla/fenix/library/downloads/DownloadView.kt

@@ -17,7 +17,7 @@ import kotlinx.android.synthetic.main.component_history.view.swipe_refresh
 import mozilla.components.support.base.feature.UserInteractionHandler
 import org.mozilla.fenix.R
 import org.mozilla.fenix.library.LibraryPageView
-import org.mozilla.fenix.library.SelectionInteractor
+import org.mozilla.fenix.selection.SelectionInteractor
 
 /**
  * Interface for the DownloadViewInteractor. This interface is implemented by objects that want

app/src/main/java/org/mozilla/fenix/library/downloads/viewholders/DownloadsListItemViewHolder.kt

@@ -11,7 +11,7 @@ import kotlinx.android.synthetic.main.download_list_item.view.*
 import kotlinx.android.synthetic.main.library_site_item.view.*
 import mozilla.components.feature.downloads.toMegabyteOrKilobyteString
 import org.mozilla.fenix.R
-import org.mozilla.fenix.library.SelectionHolder
+import org.mozilla.fenix.selection.SelectionHolder
 import org.mozilla.fenix.library.downloads.DownloadInteractor
 import org.mozilla.fenix.library.downloads.DownloadItem
 import org.mozilla.fenix.ext.getIcon

app/src/main/java/org/mozilla/fenix/library/history/HistoryAdapter.kt

@@ -11,7 +11,7 @@ import android.view.ViewGroup
 import androidx.paging.PagedListAdapter
 import androidx.recyclerview.widget.DiffUtil
 import org.mozilla.fenix.R
-import org.mozilla.fenix.library.SelectionHolder
+import org.mozilla.fenix.selection.SelectionHolder
 import org.mozilla.fenix.library.history.viewholders.HistoryListItemViewHolder
 import java.util.Calendar
 import java.util.Date

app/src/main/java/org/mozilla/fenix/library/history/HistoryView.kt

@@ -17,7 +17,7 @@ import mozilla.components.support.base.feature.UserInteractionHandler
 import org.mozilla.fenix.R
 import org.mozilla.fenix.ext.components
 import org.mozilla.fenix.library.LibraryPageView
-import org.mozilla.fenix.library.SelectionInteractor
+import org.mozilla.fenix.selection.SelectionInteractor
 import org.mozilla.fenix.theme.ThemeManager
 
 /**

app/src/main/java/org/mozilla/fenix/library/history/viewholders/HistoryListItemViewHolder.kt

@@ -15,7 +15,7 @@ import org.mozilla.fenix.R
 import org.mozilla.fenix.ext.components
 import org.mozilla.fenix.ext.hideAndDisable
 import org.mozilla.fenix.ext.showAndEnable
-import org.mozilla.fenix.library.SelectionHolder
+import org.mozilla.fenix.selection.SelectionHolder
 import org.mozilla.fenix.library.history.HistoryFragmentState
 import org.mozilla.fenix.library.history.HistoryInteractor
 import org.mozilla.fenix.library.history.HistoryItem

app/src/main/java/org/mozilla/fenix/selection/SelectionHolder.kt

@@ -0,0 +1,12 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package org.mozilla.fenix.selection
+
+/**
+ * Contains the selection of items added or removed using the [SelectionInteractor].
+ */
+interface SelectionHolder<T> {
+    val selectedItems: Set<T>
+}

app/src/main/java/org/mozilla/fenix/selection/SelectionInteractor.kt

@@ -0,0 +1,29 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package org.mozilla.fenix.selection
+
+/**
+ * Interactor for items that can be selected on the bookmarks and history screens.
+ */
+interface SelectionInteractor<T> {
+    /**
+     * Called when an item is tapped to open it.
+     * @param item the tapped item to open.
+     */
+    fun open(item: T)
+
+    /**
+     * Called when an item is long pressed and selection mode is started,
+     * or when selection mode has already started an an item is tapped.
+     * @param item the item to select.
+     */
+    fun select(item: T)
+
+    /**
+     * Called when a selected item is tapped in selection mode and should no longer be selected.
+     * @param item the item to deselect.
+     */
+    fun deselect(item: T)
+}