get a list of parents at exclude folder dialog

app/src/main/kotlin/com/simplemobiletools/gallery/activities/MediaActivity.kt

@@ -194,10 +194,7 @@ class MediaActivity : SimpleActivity(), MediaAdapter.MediaOperationsListener {
     }
 
     private fun tryExcludeFolder() {
-        val pathSet = HashSet<String>(1)
-        pathSet.add(mPath)
-
-        ExcludeFolderDialog(this, pathSet) {
+        ExcludeFolderDialog(this, arrayListOf(mPath)) {
             finish()
         }
     }

app/src/main/kotlin/com/simplemobiletools/gallery/adapters/DirectoryAdapter.kt

@@ -197,7 +197,7 @@ class DirectoryAdapter(val activity: SimpleActivity, val dirs: MutableList<Direc
     }
 
     private fun tryExcludeFolder() {
-        ExcludeFolderDialog(activity, getSelectedPaths()) {
+        ExcludeFolderDialog(activity, getSelectedPaths().toList()) {
             listener?.refreshItems()
             actMode?.finish()
         }

app/src/main/kotlin/com/simplemobiletools/gallery/dialogs/ExcludeFolderDialog.kt

@@ -3,12 +3,13 @@ package com.simplemobiletools.gallery.dialogs
 import android.support.v7.app.AlertDialog
 import android.view.LayoutInflater
 import com.simplemobiletools.commons.extensions.beVisibleIf
+import com.simplemobiletools.commons.extensions.getBasePath
 import com.simplemobiletools.commons.extensions.setupDialogStuff
 import com.simplemobiletools.gallery.R
 import com.simplemobiletools.gallery.activities.SimpleActivity
 import kotlinx.android.synthetic.main.dialog_exclude_folder.view.*
 
-class ExcludeFolderDialog(val activity: SimpleActivity, val selectedPaths: HashSet<String>, val callback: () -> Unit) {
+class ExcludeFolderDialog(val activity: SimpleActivity, val selectedPaths: List<String>, val callback: () -> Unit) {
     var dialog: AlertDialog? = null
 
     init {
@@ -30,11 +31,24 @@ class ExcludeFolderDialog(val activity: SimpleActivity, val selectedPaths: HashS
 
     }
 
-    private fun getAlternativePaths(): ArrayList<String> {
-        val parentsList = ArrayList<String>()
+    private fun getAlternativePaths(): List<String> {
+        val pathsList = ArrayList<String>()
         if (selectedPaths.size > 1)
-            return parentsList
+            return pathsList
 
-        return parentsList
+        val path = selectedPaths[0]
+        var basePath = path.getBasePath(activity)
+        val relativePath = path.substring(basePath.length)
+        val parts = relativePath.split("/").filter(String::isNotEmpty)
+        if (parts.isEmpty())
+            return pathsList
+
+        pathsList.add(basePath)
+        for (part in parts) {
+            basePath += "/$part"
+            pathsList.add(basePath)
+        }
+
+        return pathsList.reversed()
     }
 }

app/src/main/res/layout/dialog_exclude_folder.xml

@@ -23,7 +23,9 @@
             android:id="@+id/exclude_folder_parent"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:text="@string/exclude_folder_parent"/>
+            android:layout_marginTop="@dimen/activity_margin"
+            android:text="@string/exclude_folder_parent"
+            android:textSize="@dimen/normal_text_size"/>
 
         <RadioGroup
             android:id="@+id/exclude_folder_radio_group"