dropdown_search

New Feature:

• Add adaptive platform Ui feature: Material, Cupertino and Adaptive

• Add autocomplete new popup mode

• add transitionBuilder, transitionDuration, reverseTransitionDuration to menuProps

    transitionDuration: Duration(milliseconds: 500),
    transitionBuilder: (context, animation, secondaryAnimation, child) {
      return SlideTransition(
        position: Tween<Offset>(
          begin: const Offset(1, 0),
          end: Offset.zero,
        ).animate(animation),
        child: child,
      );
    }
  

• add new property animationBuilder to DropdownButtonProps, examples of uses

   /* Example 1: animation with only one icon ("iconClosed") like rotation */
   animationBuilder: (child, isOpen) {
     return AnimatedRotation(
       turns: isOpen ? .5 : 0,
       duration: Duration(milliseconds: 400),
       child: child,
     );
   }

  /* Example 2 : animation with two icons like switch */
  dropdownButtonProps: DropdownButtonProps(
    iconClosed: Icon(Icons.arrow_drop_down),
    iconOpened: Icon(Icons.arrow_drop_up),
    animationBuilder: (child, isOpen) {
      return AnimatedSwitcher(
        switchOutCurve: Curves.easeIn,
        switchInCurve: Curves.easeIn,
        duration: Duration(milliseconds: 400),
        child: child,
      );
    },
  )

• add new property layoutDelegate to MenuProps and CupertinoMenuProps, you can extend SingleChildLayoutDelegate to create your own positioning strategy

  example of use

    layoutDelegate: (context, padding, position) => _PopupMenuRouteLayout(context, position)
  
    class _PopupMenuRouteLayout extends SingleChildLayoutDelegate {
      final RelativeRect position;
      final BuildContext context;
  
      const _PopupMenuRouteLayout(this.context, this.position);
  
    @override
    BoxConstraints getConstraintsForChild(BoxConstraints constraints) {
      // pick any properties from the context to calculate proper constraints
      final mediaQuery = MediaQuery.of(context);
      final keyBoardHeight = mediaQuery.viewInsets.bottom;
      final safeArea = mediaQuery.padding;
  
      return BoxConstraints(/* calculate new constraints based on your needs */);
    }
  
      @override
      Offset getPositionForChild(Size size, Size childSize) {
        // The position where the child should be placed.
      }
  
      @override
      bool shouldRelayout(covariant SingleChildLayoutDelegate oldDelegate) => false;
    }
  

• add SuggestionsProps to popupProps

• add builder property for SuggestionsProps to override the hole suggestion widget

• add properties to scrollView and wrap widget for selected items in multiSelection mode

• Chips are fully customizable in multiSelection and suggestions

• replace padding in searchFieldProps with containerBuilder

• add onDisplayed callback to popupProps

• add errorBuilder for InfiniteScrollProps

• add possibility to reload item using myGlobalKey.currentState?.reloadItems(String filter) or myGlobalKey.currentState?.loadMoreItems(String filter, int skip)

• add textProps to have the ability to pass default text props through the context to selectedItem

• add new property for TextFieldProps

• add the ability to listen to focus changes using onFocusChange

• add new callbacks onBeforeClear and onClear to handle dropdown clear button action

Breaking changes

• change onChanged to onSelected
• PopupPropsMultiSelection changed to MultiSelectionPopupProps
• suggestedItemsProps is placed inside SuggestionsProps
• Semantics is removed from searchBox, to add it use containerBuilder like this you have full access to Semantic properties.

Fix bugs:

• BottomSheet background color 726