feat: flutter ui integration

ui/flutter/lib/widget/directory_selector.dart

@@ -0,0 +1,51 @@
+import 'package:file_selector/file_selector.dart';
+import 'package:flutter/material.dart';
+import 'package:get/get.dart';
+
+import '../util/mac_secure_util.dart';
+
+class DirectorySelector extends StatefulWidget {
+  final TextEditingController controller;
+  final bool showLabel;
+
+  const DirectorySelector(
+      {Key? key, required this.controller, this.showLabel = true})
+      : super(key: key);
+
+  @override
+  State<DirectorySelector> createState() => _DirectorySelectorState();
+}
+
+class _DirectorySelectorState extends State<DirectorySelector> {
+  @override
+  Widget build(BuildContext context) {
+    return Row(
+      children: [
+        Expanded(
+            child: TextFormField(
+          readOnly: true,
+          controller: widget.controller,
+          decoration: widget.showLabel
+              ? const InputDecoration(
+                  labelText: "下载目录",
+                )
+              : null,
+          validator: (v) {
+            return v!.trim().isNotEmpty ? null : "请选择下载目录";
+          },
+        )),
+        IconButton(
+            icon: const Icon(Icons.folder_open),
+            onPressed: () async {
+              if (GetPlatform.isDesktop) {
+                var dir = await getDirectoryPath();
+                if (dir != null) {
+                  widget.controller.text = dir;
+                  MacSecureUtil.saveBookmark(dir);
+                }
+              }
+            })
+      ],
+    );
+  }
+}

ui/flutter/lib/widget/file_list_view.dart

@@ -0,0 +1,58 @@
+import 'package:flutter/material.dart';
+import 'package:gopeed/util/util.dart';
+
+import '../api/model/resource.dart';
+
+class FileListView extends StatefulWidget {
+  final List<FileInfo> files;
+  final List<bool> values;
+
+  const FileListView({
+    Key? key,
+    required this.files,
+    required this.values,
+  }) : super(key: key);
+
+  @override
+  State<FileListView> createState() => _FileListViewState();
+}
+
+class _FileListViewState extends State<FileListView> {
+  List<FileInfo> get _files => widget.files;
+
+  List<bool> get _values => widget.values;
+
+  @override
+  Widget build(BuildContext context) {
+    final themeData = Theme.of(context);
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        const Padding(padding: EdgeInsets.only(top: 10)),
+        Text("选择文件", style: TextStyle(color: themeData.hintColor)),
+        Expanded(
+            child: Container(
+                margin: const EdgeInsets.only(top: 10),
+                decoration: BoxDecoration(
+                    border: Border.all(color: Colors.grey, width: 1),
+                    borderRadius: BorderRadius.circular(5)),
+                child: ListView.builder(
+                    itemCount: _files.length,
+                    itemBuilder: (context, index) {
+                      var file = _files[index];
+                      return CheckboxListTile(
+                        value: _values[index],
+                        onChanged: (value) {
+                          setState(() {
+                            _values[index] = value!;
+                          });
+                        },
+                        title: Text(Util.buildPath(file.path, file.name)),
+                        subtitle: Text(Util.fmtByte(file.size)),
+                        secondary: const Icon(Icons.description),
+                      );
+                    }))),
+      ],
+    );
+  }
+}