Implemented Multiselect for Task Rate

lib/main.dart

@@ -61,6 +61,7 @@ import 'package:invoiceninja_flutter/ui/settings/tax_rates_vm.dart';
 import 'package:invoiceninja_flutter/ui/settings/templates_and_reminders_vm.dart';
 import 'package:invoiceninja_flutter/ui/settings/user_details_vm.dart';
 import 'package:invoiceninja_flutter/ui/task/task_screen_vm.dart';
+import 'package:invoiceninja_flutter/ui/tax_rate/tax_rate_screen_vm.dart';
 import 'package:invoiceninja_flutter/utils/localization.dart';
 import 'package:local_auth/local_auth.dart';
 import 'package:redux/redux.dart';
@@ -353,7 +354,7 @@ class InvoiceNinjaAppState extends State<InvoiceNinjaApp> {
                 CompanyGatewayEditScreen(),
             OnlinePaymentsScreen.route: (context) => OnlinePaymentsScreen(),
             TaxRatesScreen.route: (context) => TaxRatesScreen(),
-            TaxRateSettingsScreen.route: (context) => TaxRateSettingsScreen(),
+            TaxRateSettingsScreen.route: (context) => TaxRateScreenBuilder(),
             TaxRateViewScreen.route: (context) => TaxRateViewScreen(),
             TaxRateEditScreen.route: (context) => TaxRateEditScreen(),
             ProductSettingsScreen.route: (context) => ProductSettingsScreen(),

lib/redux/tax_rate/tax_rate_actions.dart

@@ -237,9 +237,20 @@ class FilterTaxRatesByEntity implements PersistUI {
 }
 
 void handleTaxRateAction(
-    BuildContext context, TaxRateEntity taxRate, EntityAction action) {
+    BuildContext context, List<TaxRateEntity> taxRates, EntityAction action) {
+  assert(
+      [
+            EntityAction.restore,
+            EntityAction.archive,
+            EntityAction.delete,
+            EntityAction.toggleMultiselect
+          ].contains(action) ||
+          taxRates.length == 1,
+      'Cannot perform this action on more than one tax rate');
+
   final store = StoreProvider.of<AppState>(context);
   final localization = AppLocalization.of(context);
+  final taxRate = taxRates.first;
 
   switch (action) {
     case EntityAction.edit:
@@ -259,5 +270,50 @@ void handleTaxRateAction(
       store.dispatch(DeleteTaxRateRequest(
           snackBarCompleter(context, localization.deletedTaxRate), taxRate.id));
       break;
+    case EntityAction.toggleMultiselect:
+      if (!store.state.taxRateListState.isInMultiselect()) {
+        store.dispatch(StartTaxRateMultiselect(context: context));
+      }
+
+      if (taxRates.isEmpty) {
+        break;
+      }
+
+      for (final taxRate in taxRates) {
+        if (!store.state.taxRateListState.isSelected(taxRate)) {
+          store.dispatch(
+              AddToTaxRateMultiselect(context: context, entity: taxRate));
+        } else {
+          store.dispatch(
+              RemoveFromTaxRateMultiselect(context: context, entity: taxRate));
+        }
+      }
+      break;
   }
 }
+
+class StartTaxRateMultiselect {
+  StartTaxRateMultiselect({@required this.context});
+
+  final BuildContext context;
+}
+
+class AddToTaxRateMultiselect {
+  AddToTaxRateMultiselect({@required this.context, @required this.entity});
+
+  final BuildContext context;
+  final BaseEntity entity;
+}
+
+class RemoveFromTaxRateMultiselect {
+  RemoveFromTaxRateMultiselect({@required this.context, @required this.entity});
+
+  final BuildContext context;
+  final BaseEntity entity;
+}
+
+class ClearTaxRateMultiselect {
+  ClearTaxRateMultiselect({@required this.context});
+
+  final BuildContext context;
+}

lib/redux/tax_rate/tax_rate_reducer.dart

@@ -52,6 +52,11 @@ final taxRateListReducer = combineReducers<ListUIState>([
   TypedReducer<ListUIState, FilterTaxRatesByCustom1>(_filterTaxRatesByCustom1),
   TypedReducer<ListUIState, FilterTaxRatesByCustom2>(_filterTaxRatesByCustom2),
   TypedReducer<ListUIState, FilterTaxRatesByEntity>(_filterTaxRatesByClient),
+  TypedReducer<ListUIState, StartTaxRateMultiselect>(_startListMultiselect),
+  TypedReducer<ListUIState, AddToTaxRateMultiselect>(_addToListMultiselect),
+  TypedReducer<ListUIState, RemoveFromTaxRateMultiselect>(
+      _removeFromListMultiselect),
+  TypedReducer<ListUIState, ClearTaxRateMultiselect>(_clearListMultiselect),
 ]);
 
 ListUIState _filterTaxRatesByClient(
@@ -106,6 +111,28 @@ ListUIState _sortTaxRates(ListUIState taxRateListState, SortTaxRates action) {
     ..sortField = action.field);
 }
 
+ListUIState _startListMultiselect(
+    ListUIState taxRateListState, StartTaxRateMultiselect action) {
+  return taxRateListState.rebuild((b) => b..selectedEntities = <BaseEntity>[]);
+}
+
+ListUIState _addToListMultiselect(
+    ListUIState taxRateListState, AddToTaxRateMultiselect action) {
+  return taxRateListState
+      .rebuild((b) => b..selectedEntities.add(action.entity));
+}
+
+ListUIState _removeFromListMultiselect(
+    ListUIState taxRateListState, RemoveFromTaxRateMultiselect action) {
+  return taxRateListState
+      .rebuild((b) => b..selectedEntities.remove(action.entity));
+}
+
+ListUIState _clearListMultiselect(
+    ListUIState taxRateListState, ClearTaxRateMultiselect action) {
+  return taxRateListState.rebuild((b) => b..selectedEntities = null);
+}
+
 final taxRatesReducer = combineReducers<TaxRateState>([
   TypedReducer<TaxRateState, SaveTaxRateSuccess>(_updateTaxRate),
   TypedReducer<TaxRateState, AddTaxRateSuccess>(_addTaxRate),

lib/ui/tax_rate/tax_rate_list.dart

@@ -1,6 +1,8 @@
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter_redux/flutter_redux.dart';
 import 'package:invoiceninja_flutter/data/models/models.dart';
+import 'package:invoiceninja_flutter/redux/app/app_state.dart';
 import 'package:invoiceninja_flutter/ui/app/entities/entity_actions_dialog.dart';
 import 'package:invoiceninja_flutter/ui/app/lists/list_divider.dart';
 import 'package:invoiceninja_flutter/ui/app/loading_indicator.dart';
@@ -26,6 +28,9 @@ class TaxRateList extends StatelessWidget {
     final filteredClient =
         filteredClientId != null ? viewModel.clientMap[filteredClientId] : null;
     */
+    final store = StoreProvider.of<AppState>(context);
+    final listUIState = store.state.uiState.taxRateUIState.listUIState;
+    final isInMultiselect = listUIState.isInMultiselect();
 
     return Column(
       children: <Widget>[
@@ -63,10 +68,22 @@ class TaxRateList extends StatelessWidget {
                                   showDialog();
                                 } else {
                                   viewModel.onEntityAction(
-                                      context, taxRate, action);
+                                      context, [taxRate], action);
                                 }
                               },
-                              onLongPress: () => showDialog(),
+                              onLongPress: () async {
+                                final longPressIsSelection = store.state.uiState
+                                        .longPressSelectionIsDefault ??
+                                    true;
+                                if (longPressIsSelection && !isInMultiselect) {
+                                  viewModel.onEntityAction(context, [taxRate],
+                                      EntityAction.toggleMultiselect);
+                                } else {
+                                  showDialog();
+                                }
+                              },
+                              isChecked: isInMultiselect &&
+                                  listUIState.isSelected(taxRate),
                             );
                           },
                         ),

lib/ui/tax_rate/tax_rate_list_item.dart

@@ -8,7 +8,7 @@ import 'package:flutter/material.dart';
 import 'package:invoiceninja_flutter/data/models/models.dart';
 import 'package:invoiceninja_flutter/ui/app/dismissible_entity.dart';
 
-class TaxRateListItem extends StatelessWidget {
+class TaxRateListItem extends StatefulWidget {
   const TaxRateListItem({
     @required this.user,
     @required this.onEntityAction,
@@ -17,6 +17,8 @@ class TaxRateListItem extends StatelessWidget {
     //@required this.onCheckboxChanged,
     @required this.taxRate,
     @required this.filter,
+    this.onCheckboxChanged,
+    this.isChecked = false,
   });
 
   final UserEntity user;
@@ -26,54 +28,78 @@ class TaxRateListItem extends StatelessWidget {
   //final ValueChanged<bool> onCheckboxChanged;
   final TaxRateEntity taxRate;
   final String filter;
+  final Function(bool) onCheckboxChanged;
+  final bool isChecked;
 
   static final taxRateItemKey = (int id) => Key('__tax_rate_item_${id}__');
 
+  @override
+  _TaxRateListItemState createState() => _TaxRateListItemState();
+}
+
+class _TaxRateListItemState extends State<TaxRateListItem>
+    with TickerProviderStateMixin {
   @override
   Widget build(BuildContext context) {
     final store = StoreProvider.of<AppState>(context);
     final state = store.state;
     final uiState = state.uiState;
     final taxRateUIState = uiState.taxRateUIState;
+    final listUIState = taxRateUIState.listUIState;
+    final isInMultiselect = listUIState.isInMultiselect();
+    final showCheckbox = widget.onCheckboxChanged != null || isInMultiselect;
 
-    final filterMatch = filter != null && filter.isNotEmpty
+    if (isInMultiselect) {
-        ? taxRate.matchesFilterValue(filter)
+      _multiselectCheckboxAnimController.forward();
+    } else {
+      _multiselectCheckboxAnimController.animateBack(0.0);
+    }
+
+    final filterMatch = widget.filter != null && widget.filter.isNotEmpty
+        ? widget.taxRate.matchesFilterValue(widget.filter)
         : null;
     final subtitle = filterMatch;
 
     return DismissibleEntity(
       userCompany: state.userCompany,
-      entity: taxRate,
+      entity: widget.taxRate,
-      isSelected: taxRate.id ==
+      isSelected: widget.taxRate.id ==
           (uiState.isEditing
               ? taxRateUIState.editing.id
               : taxRateUIState.selectedId),
-      onEntityAction: onEntityAction,
+      onEntityAction: widget.onEntityAction,
       child: ListTile(
-        onTap: onTap,
+        onTap: isInMultiselect
-        onLongPress: onLongPress,
+            ? () => widget.onEntityAction(EntityAction.toggleMultiselect)
-        /*
+            : widget.onTap,
-        leading: Checkbox(
+        onLongPress: widget.onLongPress,
-          //key: NinjaKeys.taxRateItemCheckbox(taxRate.id),
+        leading: showCheckbox
-          value: true,
+            ? FadeTransition(
-          //onChanged: onCheckboxChanged,
+                opacity: _multiselectCheckboxAnim,
-          onChanged: (value) {
+                child: IgnorePointer(
-            return true;
+                  ignoring: listUIState.isInMultiselect(),
-          },
+                  child: Checkbox(
+                    //key: NinjaKeys.taxRateItemCheckbox(task.id),
+                    value: widget.isChecked,
+                    materialTapTargetSize: MaterialTapTargetSize.shrinkWrap,
+                    onChanged: (value) => widget.onCheckboxChanged(value),
+                    activeColor: Theme.of(context).accentColor,
                   ),
-        */
+                ),
+              )
+            : null,
         title: Container(
           width: MediaQuery.of(context).size.width,
           child: Row(
             children: <Widget>[
               Expanded(
                 child: Text(
-                  taxRate.name,
+                  widget.taxRate.name,
                   //key: NinjaKeys.clientItemClientKey(client.id),
                   style: Theme.of(context).textTheme.title,
                 ),
               ),
-              Text(formatNumber(taxRate.listDisplayAmount, context),
+              Text(formatNumber(widget.taxRate.listDisplayAmount, context),
                   style: Theme.of(context).textTheme.title),
             ],
           ),
@@ -88,10 +114,28 @@ class TaxRateListItem extends StatelessWidget {
                     overflow: TextOverflow.ellipsis,
                   )
                 : Container(),
-            EntityStateLabel(taxRate),
+            EntityStateLabel(widget.taxRate),
           ],
         ),
       ),
     );
   }
+
+  Animation _multiselectCheckboxAnim;
+  AnimationController _multiselectCheckboxAnimController;
+
+  @override
+  void initState() {
+    super.initState();
+    _multiselectCheckboxAnimController =
+        AnimationController(vsync: this, duration: Duration(milliseconds: 500));
+    _multiselectCheckboxAnim = Tween<double>(begin: 0.0, end: 1.0)
+        .animate(_multiselectCheckboxAnimController);
+  }
+
+  @override
+  void dispose() {
+    _multiselectCheckboxAnimController.dispose();
+    super.dispose();
+  }
 }

lib/ui/tax_rate/tax_rate_list_vm.dart

@@ -80,8 +80,8 @@ class TaxRateListVM {
         store.dispatch(ViewTaxRate(taxRateId: taxRate.id, context: context));
       },
       onEntityAction:
-          (BuildContext context, BaseEntity taxRate, EntityAction action) =>
+          (BuildContext context, List<BaseEntity> taxRates, EntityAction action) =>
-              handleTaxRateAction(context, taxRate, action),
+              handleTaxRateAction(context, taxRates, action),
       onRefreshed: (context) => _handleRefresh(context),
     );
   }
@@ -95,7 +95,7 @@ class TaxRateListVM {
   final bool isLoaded;
   final Function(BuildContext, TaxRateEntity) onTaxRateTap;
   final Function(BuildContext) onRefreshed;
-  final Function(BuildContext, TaxRateEntity, EntityAction) onEntityAction;
+  final Function(BuildContext, List<TaxRateEntity>, EntityAction) onEntityAction;
   final Function onClearEntityFilterPressed;
   final Function(BuildContext) onViewEntityFilterPressed;
 }

lib/ui/tax_rate/tax_rate_screen.dart

@@ -2,8 +2,10 @@ import 'package:flutter/material.dart';
 import 'package:flutter_redux/flutter_redux.dart';
 import 'package:invoiceninja_flutter/constants.dart';
 import 'package:invoiceninja_flutter/ui/app/app_scaffold.dart';
+import 'package:invoiceninja_flutter/ui/app/entities/entity_actions_dialog.dart';
 import 'package:invoiceninja_flutter/ui/app/list_filter.dart';
 import 'package:invoiceninja_flutter/ui/app/list_filter_button.dart';
+import 'package:invoiceninja_flutter/ui/tax_rate/tax_rate_screen_vm.dart';
 import 'package:invoiceninja_flutter/utils/localization.dart';
 import 'package:invoiceninja_flutter/redux/app/app_state.dart';
 import 'package:invoiceninja_flutter/data/models/models.dart';
@@ -12,15 +14,37 @@ import 'package:invoiceninja_flutter/redux/tax_rate/tax_rate_actions.dart';
 import 'package:invoiceninja_flutter/ui/app/app_bottom_bar.dart';
 
 class TaxRateSettingsScreen extends StatelessWidget {
+  const TaxRateSettingsScreen({
+    Key key,
+    @required this.viewModel,
+  }) : super(key: key);
+
   static const String route = '/$kSettings/$kSettingsTaxRates';
 
+  final TaxRateScreenVM viewModel;
+
   @override
   Widget build(BuildContext context) {
     final store = StoreProvider.of<AppState>(context);
     final state = store.state;
     final localization = AppLocalization.of(context);
+    final userCompany = state.userCompany;
+    final listUIState = state.uiState.taxRateUIState.listUIState;
+    final isInMultiselect = listUIState.isInMultiselect();
 
     return AppScaffold(
+      isChecked: isInMultiselect &&
+          listUIState.selectedEntities.length == viewModel.taxRateList.length,
+      showCheckbox: isInMultiselect,
+      onCheckboxChanged: (value) {
+        final taxRates = viewModel.taxRateList
+            .map<TaxRateEntity>((taxRateId) => viewModel.taxRateMap[taxRateId])
+            .where((taxRate) => value != listUIState.isSelected(taxRate))
+            .toList();
+
+        viewModel.onEntityAction(
+            context, taxRates, EntityAction.toggleMultiselect);
+      },
       hideHamburgerButton: true,
       appBarTitle: ListFilter(
         key: ValueKey(state.taxRateListState.filterClearedAt),
@@ -30,12 +54,44 @@ class TaxRateSettingsScreen extends StatelessWidget {
         },
       ),
       appBarActions: [
+        if (!viewModel.isInMultiselect)
           ListFilterButton(
             entityType: EntityType.taxRate,
             onFilterPressed: (String value) {
               store.dispatch(FilterTaxRates(value));
             },
           ),
+        if (viewModel.isInMultiselect)
+          FlatButton(
+            key: key,
+            child: Text(
+              localization.cancel,
+              style: TextStyle(color: Colors.white),
+            ),
+            onPressed: () {
+              store.dispatch(ClearTaxRateMultiselect(context: context));
+            },
+          ),
+        if (viewModel.isInMultiselect)
+          FlatButton(
+            key: key,
+            textColor: Colors.white,
+            disabledTextColor: Colors.white54,
+            child: Text(
+              localization.done,
+            ),
+            onPressed: state.taxRateListState.selectedEntities.isEmpty
+                ? null
+                : () async {
+                    await showEntityActionsDialog(
+                        entities: state.taxRateListState.selectedEntities,
+                        userCompany: userCompany,
+                        context: context,
+                        onEntityAction: viewModel.onEntityAction,
+                        multiselect: true);
+                    store.dispatch(ClearTaxRateMultiselect(context: context));
+                  },
+          ),
       ],
       body: TaxRateListBuilder(),
       bottomNavigationBar: AppBottomBar(

lib/ui/tax_rate/tax_rate_screen_vm.dart

@@ -0,0 +1,59 @@
+import 'package:built_collection/built_collection.dart';
+import 'package:flutter/foundation.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter/widgets.dart';
+import 'package:flutter_redux/flutter_redux.dart';
+import 'package:invoiceninja_flutter/data/models/models.dart';
+import 'package:invoiceninja_flutter/redux/app/app_state.dart';
+import 'package:invoiceninja_flutter/redux/tax_rate/tax_rate_actions.dart';
+import 'package:invoiceninja_flutter/redux/tax_rate/tax_rate_selectors.dart';
+import 'package:invoiceninja_flutter/ui/tax_rate/tax_rate_screen.dart';
+import 'package:redux/redux.dart';
+
+class TaxRateScreenBuilder extends StatelessWidget {
+  const TaxRateScreenBuilder({Key key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return StoreConnector<AppState, TaxRateScreenVM>(
+      //rebuildOnChange: true,
+      converter: TaxRateScreenVM.fromStore,
+      builder: (context, vm) {
+        return TaxRateSettingsScreen(
+          viewModel: vm,
+        );
+      },
+    );
+  }
+}
+
+class TaxRateScreenVM {
+  TaxRateScreenVM({
+    @required this.isInMultiselect,
+    @required this.taxRateList,
+    @required this.userCompany,
+    @required this.onEntityAction,
+    @required this.taxRateMap,
+  });
+
+  final bool isInMultiselect;
+  final UserCompanyEntity userCompany;
+  final List<String> taxRateList;
+  final Function(BuildContext, List<BaseEntity>, EntityAction) onEntityAction;
+  final BuiltMap<String, TaxRateEntity> taxRateMap;
+
+  static TaxRateScreenVM fromStore(Store<AppState> store) {
+    final state = store.state;
+
+    return TaxRateScreenVM(
+      taxRateMap: state.taxRateState.map,
+      taxRateList: memoizedFilteredTaxRateList(state.taxRateState.map,
+          state.taxRateState.list, state.taxRateListState),
+      userCompany: state.userCompany,
+      isInMultiselect: state.taxRateListState.isInMultiselect(),
+      onEntityAction: (BuildContext context, List<BaseEntity> taxRates,
+              EntityAction action) =>
+          handleTaxRateAction(context, taxRates, action),
+    );
+  }
+}

lib/ui/tax_rate/view/tax_rate_view_vm.dart

@@ -85,7 +85,7 @@ class TaxRateViewVM {
         }
       },
       onEntityAction: (BuildContext context, EntityAction action) =>
-          handleTaxRateAction(context, taxRate, action),
+          handleTaxRateAction(context, [taxRate], action),
     );
   }