二次开发源码提交

2026-05-15 08:52:48 +08:00
parent 4131f7321a
commit eb35a1d067
191 changed files with 34566 additions and 0 deletions
@@ -0,0 +1,212 @@
+import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+import '../../data/models/download_task_model.dart';
+import '../providers/download_manager_provider.dart';
+import 'download_progress_item.dart';
+
+/// 下载进度对话框
+class DownloadProgressDialog extends StatelessWidget {
+  const DownloadProgressDialog({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Consumer<DownloadManagerProvider>(
+      builder: (context, downloadManager, child) {
+        final tasks = downloadManager.tasks;
+
+        return Dialog(
+          insetPadding: const EdgeInsets.symmetric(horizontal: 20, vertical: 180),
+          shape: RoundedRectangleBorder(
+            borderRadius: BorderRadius.circular(16),
+          ),
+          child: ConstrainedBox(
+            constraints: BoxConstraints(
+              maxWidth: 300,
+              // 当没有任务时，最小高度约为2个任务的大小（约160px）
+              minHeight: tasks.isEmpty ? 160 : 0,
+            ),
+            child: Column(
+              mainAxisSize: MainAxisSize.min,
+              children: [
+                // 标题栏
+                _buildHeader(context),
+
+                // 任务列表
+                Flexible(
+                  child: tasks.isEmpty
+                      ? _buildEmptyState(context)
+                      : _buildTaskList(context, downloadManager, tasks),
+                ),
+
+                // 底部操作栏
+                _buildFooter(context, tasks),
+              ],
+            ),
+          ),
+        );
+      },
+    );
+  }
+
+  Widget _buildEmptyState(BuildContext context) {
+    return const Center(
+      child: Column(
+        mainAxisAlignment: MainAxisAlignment.center,
+        children: [
+          Icon(
+            Icons.download_done,
+            size: 48,
+            color: Colors.grey,
+          ),
+          SizedBox(height: 16),
+          Text(
+            '暂无下载任务',
+            style: TextStyle(
+              color: Colors.grey,
+              fontSize: 14,
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildTaskList(
+    BuildContext context,
+    DownloadManagerProvider downloadManager,
+    List<DownloadTaskModel> tasks,
+  ) {
+    return ListView.separated(
+      shrinkWrap: true,
+      itemCount: tasks.length,
+      separatorBuilder: (_, _) => const SizedBox(height: 8),
+      itemBuilder: (context, index) {
+        final task = tasks[index];
+        return DownloadProgressItem(
+          key: ValueKey(task.id),
+          task: task,
+          onPause: () => downloadManager.pauseDownload(task.id),
+          onResume: () => downloadManager.resumeDownload(task.id),
+          onCancel: () => downloadManager.cancelDownload(task.id),
+          onDelete: () async {
+            await downloadManager.deleteDownloadTask(task.id);
+          },
+          onRetry: () => downloadManager.retryDownload(task.id),
+        );
+      },
+    );
+  }
+
+  Widget _buildHeader(BuildContext context) {
+    return Container(
+      padding: const EdgeInsets.symmetric(horizontal: 20, vertical: 16),
+      decoration: BoxDecoration(
+        border: Border(
+          bottom: BorderSide(color: Colors.grey.shade200),
+        ),
+      ),
+      child: Row(
+        children: [
+          const Icon(Icons.download, color: Colors.blue),
+          const SizedBox(width: 12),
+          const Text(
+            '下载任务',
+            style: TextStyle(
+              fontSize: 18,
+              fontWeight: FontWeight.bold,
+            ),
+          ),
+          const Spacer(),
+          Consumer<DownloadManagerProvider>(
+            builder: (context, downloadManager, child) {
+              final downloadingCount = downloadManager.downloadingCount;
+              if (downloadingCount > 0) {
+                return Container(
+                  padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
+                  decoration: BoxDecoration(
+                    color: Colors.blue.shade100,
+                    borderRadius: BorderRadius.circular(12),
+                  ),
+                  child: Text(
+                    '下载中: $downloadingCount',
+                    style: const TextStyle(
+                      fontSize: 12,
+                      color: Colors.blue,
+                      fontWeight: FontWeight.w500,
+                    ),
+                  ),
+                );
+              }
+              return const SizedBox.shrink();
+            },
+          ),
+          IconButton(
+            icon: const Icon(Icons.close),
+            onPressed: () {
+              Navigator.of(context).pop();
+            },
+            tooltip: '关闭',
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildFooter(BuildContext context, List<DownloadTaskModel> tasks) {
+    final hasCompleted = tasks.any((t) => t.status == DownloadStatus.completed);
+    final hasFailed = tasks.any((t) => t.status == DownloadStatus.failed);
+
+    return Container(
+      padding: const EdgeInsets.symmetric(horizontal: 20, vertical: 10),
+      decoration: BoxDecoration(
+        border: Border(
+          top: BorderSide(color: Colors.grey.shade200),
+        ),
+      ),
+      child: Row(
+        children: [
+          if (hasCompleted)
+            Consumer<DownloadManagerProvider>(
+              builder: (context, downloadManager, child) {
+                return TextButton.icon(
+                  icon: const Icon(Icons.delete_sweep, size: 18),
+                  label: const Text('清除已完成'),
+                  onPressed: () async {
+                    await downloadManager.clearCompletedTasks();
+                  },
+                );
+              },
+            ),
+          if (hasFailed)
+            Consumer<DownloadManagerProvider>(
+              builder: (context, downloadManager, child) {
+                return TextButton.icon(
+                  icon: const Icon(Icons.clear_all, size: 18),
+                  label: const Text('清除失败'),
+                  onPressed: () {
+                    downloadManager.clearFailedTasks();
+                  },
+                );
+              },
+            ),
+          const Spacer(),
+          FilledButton(
+            onPressed: () {
+              Navigator.of(context).pop();
+            },
+            child: const Text('关闭'),
+          ),
+        ],
+      ),
+    );
+  }
+}
+
+/// 显示下载对话框
+void showDownloadDialog(BuildContext context) {
+  showDialog(
+    context: context,
+    builder: (context) => const DownloadProgressDialog(),
+    barrierDismissible: false,
+  );
+}