add a button for temporarily showing excluded

app/src/main/kotlin/com/simplemobiletools/gallery/pro/activities/MainActivity.kt

@@ -92,6 +92,7 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
 
         if (savedInstanceState == null) {
             config.temporarilyShowHidden = false
+            config.temporarilyShowExcluded = false
             config.tempSkipDeleteConfirmation = false
             removeTempFolder()
             checkRecycleBinItems()
@@ -247,9 +248,10 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
     override fun onStop() {
         super.onStop()
 
-        if (config.temporarilyShowHidden || config.tempSkipDeleteConfirmation) {
+        if (config.temporarilyShowHidden || config.tempSkipDeleteConfirmation || config.temporarilyShowExcluded) {
             mTempShowHiddenHandler.postDelayed({
                 config.temporarilyShowHidden = false
+                config.temporarilyShowExcluded = false
                 config.tempSkipDeleteConfirmation = false
             }, SHOW_TEMP_HIDDEN_DURATION)
         } else {
@@ -261,6 +263,7 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
         super.onDestroy()
         if (!isChangingConfigurations) {
             config.temporarilyShowHidden = false
+            config.temporarilyShowExcluded = false
             config.tempSkipDeleteConfirmation = false
             mTempShowHiddenHandler.removeCallbacksAndMessages(null)
             removeTempFolder()
@@ -306,6 +309,9 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
         menu.findItem(R.id.temporarily_show_hidden).isVisible = (!isRPlus() || isExternalStorageManager()) && !config.shouldShowHidden
         menu.findItem(R.id.stop_showing_hidden).isVisible = (!isRPlus() || isExternalStorageManager()) && config.temporarilyShowHidden
 
+        menu.findItem(R.id.temporarily_show_excluded).isVisible = !menu.findItem(R.id.temporarily_show_hidden).isVisible && !config.temporarilyShowExcluded
+        menu.findItem(R.id.stop_showing_excluded).isVisible = !menu.findItem(R.id.temporarily_show_hidden).isVisible && config.temporarilyShowExcluded
+
         updateMenuItemColors(menu)
         return true
     }
@@ -319,6 +325,8 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
             R.id.change_view_type -> changeViewType()
             R.id.temporarily_show_hidden -> tryToggleTemporarilyShowHidden()
             R.id.stop_showing_hidden -> tryToggleTemporarilyShowHidden()
+            R.id.temporarily_show_excluded -> toggleTemporarilyShowExcluded(true)
+            R.id.stop_showing_excluded -> toggleTemporarilyShowExcluded(false)
             R.id.create_new_folder -> createNewFolder()
             R.id.show_the_recycle_bin -> toggleRecycleBin(true)
             R.id.hide_the_recycle_bin -> toggleRecycleBin(false)
@@ -569,6 +577,14 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
         invalidateOptionsMenu()
     }
 
+    private fun toggleTemporarilyShowExcluded(show: Boolean) {
+        mLoadedInitialPhotos = false
+        config.temporarilyShowExcluded = show
+        directories_grid.adapter = null
+        getDirectories()
+        invalidateOptionsMenu()
+    }
+
     override fun deleteFolders(folders: ArrayList<File>) {
         val fileDirItems =
             folders.asSequence().filter { it.isDirectory }.map { FileDirItem(it.absolutePath, it.name, true) }.toMutableList() as ArrayList<FileDirItem>

app/src/main/kotlin/com/simplemobiletools/gallery/pro/extensions/Context.kt

@@ -656,7 +656,12 @@ fun Context.getCachedDirectories(
         }
 
         val shouldShowHidden = config.shouldShowHidden || forceShowHidden
-        val excludedPaths = config.excludedFolders
+        val excludedPaths = if (config.temporarilyShowExcluded) {
+            HashSet()
+        } else {
+            config.excludedFolders
+        }
+
         val includedPaths = config.includedFolders
 
         val folderNoMediaStatuses = HashMap<String, Boolean>()

app/src/main/kotlin/com/simplemobiletools/gallery/pro/helpers/Config.kt

@@ -74,6 +74,10 @@ class Config(context: Context) : BaseConfig(context) {
         get() = prefs.getBoolean(TEMPORARILY_SHOW_HIDDEN, false)
         set(temporarilyShowHidden) = prefs.edit().putBoolean(TEMPORARILY_SHOW_HIDDEN, temporarilyShowHidden).apply()
 
+    var temporarilyShowExcluded: Boolean
+        get() = prefs.getBoolean(TEMPORARILY_SHOW_EXCLUDED, false)
+        set(temporarilyShowExcluded) = prefs.edit().putBoolean(TEMPORARILY_SHOW_EXCLUDED, temporarilyShowExcluded).apply()
+
     var isThirdPartyIntent: Boolean
         get() = prefs.getBoolean(IS_THIRD_PARTY_INTENT, false)
         set(isThirdPartyIntent) = prefs.edit().putBoolean(IS_THIRD_PARTY_INTENT, isThirdPartyIntent).apply()

app/src/main/kotlin/com/simplemobiletools/gallery/pro/helpers/Constants.kt

@@ -9,6 +9,7 @@ const val GROUP_FOLDER_PREFIX = "group_folder_"
 const val VIEW_TYPE_PREFIX = "view_type_folder_"
 const val SHOW_HIDDEN_MEDIA = "show_hidden_media"
 const val TEMPORARILY_SHOW_HIDDEN = "temporarily_show_hidden"
+const val TEMPORARILY_SHOW_EXCLUDED = "temporarily_show_excluded"
 const val IS_THIRD_PARTY_INTENT = "is_third_party_intent"
 const val AUTOPLAY_VIDEOS = "autoplay_videos"
 const val REMEMBER_LAST_VIDEO_POSITION = "remember_last_video_position"

app/src/main/kotlin/com/simplemobiletools/gallery/pro/helpers/MediaFetcher.kt

@@ -101,7 +101,12 @@ class MediaFetcher(val context: Context) {
 
             val config = context.config
             val shouldShowHidden = config.shouldShowHidden
-            val excludedPaths = config.excludedFolders
+            val excludedPaths = if (config.temporarilyShowExcluded) {
+                HashSet()
+            } else {
+                config.excludedFolders
+            }
+
             val includedPaths = config.includedFolders
 
             val folderNoMediaStatuses = HashMap<String, Boolean>()

app/src/main/res/menu/menu_main.xml

@@ -39,6 +39,16 @@
         android:showAsAction="never"
         android:title="@string/stop_showing_hidden"
         app:showAsAction="never" />
+    <item
+        android:id="@+id/temporarily_show_excluded"
+        android:showAsAction="never"
+        android:title="@string/temporarily_show_excluded"
+        app:showAsAction="never" />
+    <item
+        android:id="@+id/stop_showing_excluded"
+        android:showAsAction="never"
+        android:title="@string/stop_showing_excluded"
+        app:showAsAction="never" />
     <item
         android:id="@+id/show_all"
         android:showAsAction="never"