dismissible_expanded_list 0.2.4

A Flutter package to provide dismissible and expanded list.

example/lib/main.dart

import 'package:example/mock.dart';
import 'package:flutter/material.dart';
import 'package:dismissible_expanded_list/dismissible_expanded_list.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
      home: ExpansionTileSample(),
    );
  }
}

class ExpansionTileSample extends StatefulWidget {
  @override
  _ExpansionTileSampleState createState() => _ExpansionTileSampleState();
}

class _ExpansionTileSampleState extends State<ExpansionTileSample> {
  String title = 'Not Yet Selected';
  String selectedId = '1';
  bool removeTileOnDismiss = true;

  final List<ExpandableListItem> list = mockData;

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          backgroundColor: Color(0xFF2e6f85),
          title: const Text('ExpansionTile'),
        ),
        body: Material(
          child: MediaQuery.of(context).orientation == Orientation.landscape
              ? Row(
                  children: <Widget>[_buildLeftSide(), _buildRightSide()],
                )
              : Row(
                  children: <Widget>[_buildRightSide()],
                ),
        ),
      ),
    );
  }

  Widget _buildRightSide() {
    /// Configuration example
    DismissibleListConfig config = DismissibleListConfig()
      ..badgeWidth = 80.0
      ..listElevation = 3.0
      ..infoBadgeElevation = 0.0
      ..infoIconSize = 15.0
      ..removeTileOnDismiss = false
      ..allowBatchSwipe = true
      ..allowChildSwipe = true
      ..allowParentSelection = true
      ..showBorder = false
      ..showInfoBadge = true
      ..titleStyle = TextStyles.title
      ..titleSelectedStyle = TextStyles.titleSelected
      ..subTitleStyle = TextStyles.subTitle
      ..subTitleSelectedStyle = TextStyles.subTitleSelected
      ..trailingIcon = Icons.info_outline
      ..lineColor = Colors.grey[400]
      ..selectionColor = Color(0xFFcee9f0)
      ..rightSwipeColor = Colors.green
      ..leftSwipeColor = Colors.red
      ..iconColor = Colors.black87
      ..iconSelectedColor = Colors.black87
      ..backgroundColor = Colors.white;

    return Expanded(
      flex: 1,
      child: ListView.builder(
        itemBuilder: (BuildContext context, int index) =>
            DismissibleExpandableList(
          parentIndex: index,
          entry: list[index],
          config: config,
          onItemClick: (parentIndex, childIndex, ExpandableListItem item) {
            print('onItemClick called');
            onItemClick(parentIndex, childIndex);
          },
          onItemDismissed:
              (parentIndex, childIndex, direction, removeTileOnDismiss, item) {
            if (direction == DismissDirection.endToStart) {
              onItemDismissed(parentIndex, childIndex, removeTileOnDismiss);
            } else {
              onItemDismissed(parentIndex, childIndex, removeTileOnDismiss);
            }
          },
        ),
        itemCount: mockData.length,
      ),
    );
  }

  Widget _buildLeftSide() {
    return Expanded(
      flex: 2,
      child: Container(
        margin: EdgeInsets.only(left: 5.0, top: 5.0, bottom: 5.0, right: 2.0),
        height: double.infinity,
        decoration: BoxDecoration(
            color: Colors.white, borderRadius: BorderRadius.circular(10.0)),
        child: Text(title),
      ),
    );
  }

  // general methods:-----------------------------------------------------------
  void onItemClick(int parentIndex, int childIndex) {
    setState(
      () {
        if (childIndex == -1) {
          title = mockData[parentIndex].title;
          selectedId = mockData[parentIndex].id;

          // setting entry to true
          mockData.forEach((item) => item.reset());
          mockData[parentIndex].selected = true;
        } else {
          selectedId = mockData[parentIndex].children[childIndex].id;
          title = mockData[parentIndex].children[childIndex].title;

          // setting entry to true
          mockData.forEach((item) => item.reset());
          mockData[parentIndex].selected = true;
          mockData[parentIndex].children[childIndex].selected = true;
        }
      },
    );
  }

  void onItemDismissed(
      int parentIndex, int childIndex, bool removeTileOnDismiss) {
    setState(
      () {
        // check to see if user wants to remove swiped items from list
        // if yes then remove item from list
        // else show user a message about swiped item
        if (removeTileOnDismiss) {
          if (childIndex == -1) {
            mockData.removeAt(parentIndex);
          } else {
            // check to see if its the last child
            // if yes, then remove parent as well
            // else, only remove child
            if (mockData[parentIndex].children != null &&
                mockData[parentIndex].children.length > 1) {
              mockData[parentIndex].children.removeAt(childIndex);
            } else {
              mockData.removeAt(parentIndex);
            }
          }
        } else {
          // show user a message that item has been swiped
        }
      },
    );
  }
}