144 lines
3.6 KiB
Dart
144 lines
3.6 KiB
Dart
import 'dart:async';
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import 'package:flutter/material.dart';
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import 'package:get/get.dart';
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import '../../../app/app.dart';
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import 'multi_select_action.dart';
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import 'multi_select_item.dart';
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class MultiSelectController extends GetxController
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with StateMixin<List<MultiSelectItem<FilterOption>>>, MultiSelectActions<FilterOption>, ScrollMixin {
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// List<FilterOption> initialValues;
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// String modelCode;
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Timer? _debounce;
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FilterModel model;
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MultiSelectController(this.model);
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RxList<FilterOption> selectedValues = <FilterOption>[].obs;
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List<MultiSelectItem<FilterOption>> items = [];
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RxString searchKey = ''.obs;
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int page = 1;
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int itemPerPage = 20;
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bool getFirstData = false;
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RxBool lastPage = false.obs;
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@override
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void onInit() {
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searchKey.value = '';
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debugPrint('model.selectedOptions ${model.selectedOptions}');
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this.selectedValues.addAll(model.selectedOptions);
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update();
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getData();
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super.onInit();
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}
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Future<void> getData() async {
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await FilterApi.getOptions(page, itemPerPage, model, searchKey.value).then((result) {
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final bool emptyRepositories = result.isEmpty;
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if (!getFirstData && emptyRepositories) {
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change(null, status: RxStatus.empty());
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} else if (getFirstData && emptyRepositories) {
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lastPage.value = true;
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} else {
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getFirstData = true;
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// convert data
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var newItems = result.map((option) => MultiSelectItem<FilterOption>(option, option.label)).toList();
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debugPrint('newItems ${newItems.length}');
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for (var item in newItems) {
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item.selected = this.selectedValues.where((element) => element.id == item.value.id).isNotEmpty;
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items.add(item);
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}
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// check is last item
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if (items.length < itemPerPage) {
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lastPage.value = true;
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}
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change(items, status: RxStatus.success());
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}
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update();
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}, onError: (err) {
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change(null, status: RxStatus.error(err.toString()));
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});
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}
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@override
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Future<void> onEndScroll() async {
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debugPrint('onEndScroll ${lastPage.value}');
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if (!lastPage.value) {
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page += 1;
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await getData();
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}
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}
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@override
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Future<void> onTopScroll() async {
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debugPrint('onTopScroll');
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}
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void clearFilter(BuildContext ctx, void Function(List<FilterOption>)? onClear) {
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debugPrint('clearFilter');
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for (int i = 0; i < items.length; i++) {
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if (selectedValues.contains(items[i].value)) {
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items[i].selected = false;
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}
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}
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selectedValues.clear();
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this.onClearTap(ctx, selectedValues, onClear);
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update();
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}
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Future<void> onSearchChanged(String val) async {
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getFirstData = false;
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page = 1;
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searchKey.value = val;
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if (_debounce?.isActive ?? false) _debounce!.cancel();
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_debounce = Timer(const Duration(milliseconds: 600), () {
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items.clear();
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change(items, status: RxStatus.loading());
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getData();
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update();
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});
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}
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void onListBoxListTileChanged(
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MultiSelectItem<FilterOption> item, void Function(List<FilterOption>)? onSelectionChanged, checked) {
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debugPrint('onListBoxListTileChanged');
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if (checked) {
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item.selected = true;
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selectedValues.add(item.value);
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} else {
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item.selected = false;
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selectedValues.removeWhere((e) => e.id == item.value.id);
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}
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selectedValues.refresh();
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if (onSelectionChanged != null) {
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onSelectionChanged(selectedValues);
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}
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update();
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}
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void onConfirmSelection(BuildContext context, void Function(List<FilterOption>) onConfirm) {
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onConfirmTap(context, selectedValues, onConfirm);
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update();
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}
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}
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