kmpdfkit_demo/example/lib/widgets/convert_list_widget.dart

import 'package:flutter/material.dart';
import 'package:kmpdfkit_conversion_flutter/cpdf_converter.dart';
import 'package:kmpdfkit_conversion_flutter/models/convert_status.dart';
import 'package:open_file/open_file.dart';
import 'package:provider/provider.dart';

import '../models/convert_task.dart';
import '../states/convert_provider.dart';

///  convert_list_widget.dart
///  Copyright © 2014-2023 PDF Technologies, Inc. All Rights Reserved.
///
///  THIS SOURCE CODE AND ANY ACCOMPANYING DOCUMENTATION ARE PROTECTED BY INTERNATIONAL COPYRIGHT LAW
///  AND MAY NOT BE RESOLD OR REDISTRIBUTED. USAGE IS BOUND TO THE ComPDFKit LICENSE AGREEMENT.
///  UNAUTHORIZED REPRODUCTION OR DISTRIBUTION IS SUBJECT TO CIVIL AND CRIMINAL PENALTIES.
///  This notice may not be removed from this file.

class ConvertListWidget extends StatefulWidget {
  const ConvertListWidget({Key? key}) : super(key: key);

  @override
  State<ConvertListWidget> createState() => _ConvertListWidgetState();
}

class _ConvertListWidgetState extends State<ConvertListWidget> {
  @override
  Widget build(BuildContext context) {
    var count = context.select<ConvertTaskQueueProvider, int>(
        (value) => value.taskQueue.length);
    return ListView.builder(
      itemCount: count,
      primary: true,
      shrinkWrap: true,
      physics: const ClampingScrollPhysics(),
      itemBuilder: (BuildContext context, int index) {
        //设置子条目
        return Builder(builder: (context) {
          ConvertTask bean =
              context.select<ConvertTaskQueueProvider, ConvertTask>(
                  (value) => value.taskQueue[index]);
          context.select<ConvertTaskQueueProvider, int>(
              (value) => value.taskQueue[index].progress);
          TaskStatus status =
              context.select<ConvertTaskQueueProvider, TaskStatus>(
                  (value) => value.taskQueue[index].status);
          return Column(
            children: [
              ListTile(
                isThreeLine: true,
                title: Text(
                  bean.fileName,
                  style: const TextStyle(fontSize: 18),
                ),
                subtitle: Text(
                  "PDF convert ${bean.convertType.name.toUpperCase()} ${bean.outputPath != null ? "\n${bean.outputPath}" : ''}",
                  style: const TextStyle(fontSize: 12),
                ),
                trailing: Text(getStatusName(bean)),
                // item 直观感受是整体大小
                contentPadding:
                    const EdgeInsets.symmetric(horizontal: 12, vertical: 2),
                onTap: () async {
                  if (status == TaskStatus.success) {
                    OpenFile.open(bean.outputPath);
                  }
                },
              ),
              Row(
                children: [
                  ElevatedButton(onPressed: () {
                    CPDFConverter.cancelTask();
                  }, child: Text("取消任务")),
                  ElevatedButton(onPressed: () {
                    context
                        .read<ConvertTaskQueueProvider>()
                        .startTask(bean);
                  }, child: Text("开始任务"))
                ],
              )
            ],
          );
        });
      },
    );
  }

  String getStatusName(ConvertTask task) {
    switch (task.status) {
      case TaskStatus.wait:
        return "Waiting";
      case TaskStatus.start:
        return "Start";
      case TaskStatus.converting:
        return "Converting (${task.progress}%)";
      case TaskStatus.success:
        return "SUCCESS";
      case TaskStatus.fail:
        return "FAIL";
      case TaskStatus.cancel:
        return "task canceled";
      default:
        return "";
    }
  }
}