new: picker & opt. rm -r

lib/core/extension/context/dialog.dart

@@ -1,13 +1,11 @@
+import 'package:choice/choice.dart';
 import 'package:flutter/material.dart';
 import 'package:toolbox/core/extension/context/common.dart';
 import 'package:toolbox/core/extension/context/locale.dart';
-import 'package:toolbox/data/res/provider.dart';
+import 'package:toolbox/view/widget/choice_chip.dart';
 
-import '../../../data/model/server/snippet.dart';
 import '../../../data/res/ui.dart';
 import '../../../view/widget/input_field.dart';
-import '../../../view/widget/picker.dart';
-import '../../route.dart';
 
 extension DialogX on BuildContext {
   Future<T?> showRoundDialog<T>({
@@ -53,45 +51,60 @@ extension DialogX on BuildContext {
     );
   }
 
-  void showSnippetDialog(
-    void Function(Snippet s) onSelected,
-  ) {
-    if (Pros.snippet.snippets.isEmpty) {
-      showRoundDialog(
-        child: Text(l10n.noSavedSnippet),
-        actions: [
-          TextButton(
-            onPressed: () => pop(),
-            child: Text(l10n.ok),
-          ),
-          TextButton(
-            onPressed: () {
-              pop();
-              AppRoute.snippetEdit().go(this);
-            },
-            child: Text(l10n.add),
-          )
-        ],
-      );
-      return;
-    }
-
-    var snippet = Pros.snippet.snippets.first;
-    showRoundDialog(
+  Future<List<T>?> showPickDialog<T>({
+    required List<T?> items,
+    required String Function(T) name,
+    bool multi = true,
+  }) async {
+    var vals = <T>[];
+    final sure = await showRoundDialog<bool>(
       title: Text(l10n.choose),
-      child: Picker(
-        items: Pros.snippet.snippets.map((e) => Text(e.name)).toList(),
-        onSelected: (idx) => snippet = Pros.snippet.snippets[idx],
+      child: Choice<T>(
+        onChanged: (value) => vals = value,
+        multiple: multi,
+        clearable: true,
+        builder: (state, _) {
+          return Wrap(
+            children: List<Widget>.generate(
+              items.length,
+              (index) {
+                final item = items[index];
+                if (item == null) return UIs.placeholder;
+                return ChoiceChipX<T>(
+                  label: name(item),
+                  state: state,
+                  value: item,
+                );
+              },
+            ),
+          );
+        },
       ),
       actions: [
         TextButton(
-          onPressed: () async {
-            pop();
-            onSelected(snippet);
-          },
+          onPressed: () => pop(true),
           child: Text(l10n.ok),
-        )
+        ),
       ],
     );
+    if (sure == true && vals.isNotEmpty) {
+      return vals;
+    }
+    return null;
+  }
+
+  Future<T?> showPickSingleDialog<T>({
+    required List<T?> items,
+    required String Function(T) name,
+  }) async {
+    final vals = await showPickDialog<T>(
+      items: items,
+      name: name,
+      multi: false,
+    );
+    if (vals != null && vals.isNotEmpty) {
+      return vals.first;
+    }
+    return null;
   }
 }