fis_lib_measure/lib/view/measure/drag_delete_area.dart

import 'package:fis_i18n/i18n.dart';
import 'package:fis_measure/interfaces/process/workspace/application.dart';
import 'package:fis_measure/process/workspace/measure_data_controller.dart';
import 'package:fis_measure/utils/prompt_box.dart';
import 'package:fis_ui/index.dart';
import 'package:flutter/material.dart';
import 'package:get/get.dart';

class DragDeleteArea extends FStatefulWidget {
  const DragDeleteArea({Key? key}) : super(key: key);
  @override
  FState<DragDeleteArea> createState() => DragDeleteAreaState();
}

class DragDeleteAreaState extends FState<DragDeleteArea> {
  final measureData = Get.find<MeasureDataController>();
  bool _isDragOn = false;

  @override
  void initState() {
    super.initState();
  }

  @override
  void dispose() {
    super.dispose();
  }

  @override
  FWidget build(BuildContext context) {
    return FDragTarget<String>(
      onAccept: (data) async {
        measureData.annotationList.remove(data);
        final application = Get.find<IApplication>();
        final result = await measureData.deleteAnnotation(application, data);
        if (result ?? false) {
          PromptBox.toast(i18nBook.measure.annotationDeleted.translate([data]));
        }
        setState(() {
          _isDragOn = false;
        });
      },
      onWillAccept: (data) {
        setState(() {
          _isDragOn = true;
        });
        return true;
      },
      onLeave: (data) {
        setState(() {
          _isDragOn = false;
        });
      },
      builder: (context, candidateData, rejectedData) {
        return FContainer(
          width: 300,
          height: 50,
          padding: const EdgeInsets.only(left: 10, top: 5, bottom: 5),
          child: FContainer(
            decoration: BoxDecoration(
              color: const Color.fromARGB(255, 243, 108, 99),
              borderRadius: BorderRadius.circular(5),
            ),
            child: FCenter(
              child:
                  FRow(mainAxisAlignment: MainAxisAlignment.center, children: [
                const FIcon(
                  Icons.delete,
                  color: Colors.white,
                ),
                FText(
                  _isDragOn
                      ? i18nBook.measure.releaseToDelete.t
                      : i18nBook.measure.dragHereToDelete.t,
                  textAlign: TextAlign.center,
                  style: const TextStyle(color: Colors.white),
                ),
              ]),
            ),
          ),
        );
      },
    );
  }
}