Merge pull request Yummypets#529 from SoBump/preselect_item_multiple_selection_config

Add a config to pre-select the current item in library when using multiple options

Author: s4cha

Source/Configuration/YPImagePickerConfiguration.swift

@@ -180,6 +180,9 @@ public struct YPConfigLibrary {
     /// Initial state of multiple selection button.
     public var defaultMultipleSelection = false
 
+    /// Pre-selects the current item on setting multiple selection
+    public var preSelectItemOnMultipleSelection = true
+
     /// Anything superior than 1 will enable the multiple selection feature.
     public var maxNumberOfItems = 1
 

Source/Pages/Gallery/YPLibraryVC.swift

@@ -177,7 +177,7 @@ public class YPLibraryVC: UIViewController, YPPermissionCheckable {
         multipleSelectionEnabled = !multipleSelectionEnabled
 
         if multipleSelectionEnabled {
-            if selection.isEmpty {
+            if selection.isEmpty && YPConfig.library.preSelectItemOnMultipleSelection {
                 let asset = mediaManager.fetchResult[currentlySelectedIndex]
                 selection = [
                     YPLibrarySelection(index: currentlySelectedIndex,