add option filter ab by intersection

Signed-off-by: 21pages <pages21@163.com>

flutter/lib/common/widgets/address_book.dart

@@ -229,6 +229,22 @@ class _AddressBookState extends State<AddressBook> {
     );
   }
 
+  @protected
+  MenuEntryBase<String> filterMenuItem() {
+    return MenuEntrySwitch<String>(
+      switchType: SwitchType.scheckbox,
+      text: translate('Filter by intersection'),
+      getter: () async {
+        return filterAbTagByIntersection();
+      },
+      setter: (bool v) async {
+        bind.mainSetLocalOption(key: filterAbTagOption, value: v ? 'Y' : '');
+        gFFI.abModel.filterByIntersection.value = v;
+      },
+      dismissOnClicked: true,
+    );
+  }
+
   void _showMenu(RelativeRect pos) {
     final items = [
       getEntry(translate("Add ID"), abAddId),
@@ -236,6 +252,7 @@ class _AddressBookState extends State<AddressBook> {
       getEntry(translate("Unselect all tags"), gFFI.abModel.unsetSelectedTags),
       sortMenuItem(),
       syncMenuItem(),
+      filterMenuItem(),
     ];
 
     mod_menu.showMenu(

flutter/lib/common/widgets/peers_view.dart

@@ -450,12 +450,21 @@ class AddressBookPeersView extends BasePeersView {
     if (selectedTags.isEmpty) {
       return true;
     }
-    for (final tag in selectedTags) {
-      if (idents.contains(tag)) {
-        return true;
+    if (gFFI.abModel.filterByIntersection.value) {
+      for (final tag in selectedTags) {
+        if (!idents.contains(tag)) {
+          return false;
+        }
       }
+      return true;
+    } else {
+      for (final tag in selectedTags) {
+        if (idents.contains(tag)) {
+          return true;
+        }
+      }
+      return false;
     }
-    return false;
   }
 }
 

flutter/lib/models/ab_model.dart

@@ -23,6 +23,11 @@ bool shouldSortTags() {
   return bind.mainGetLocalOption(key: sortAbTagsOption).isNotEmpty;
 }
 
+final filterAbTagOption = 'filter-ab-by-intersection';
+bool filterAbTagByIntersection() {
+  return bind.mainGetLocalOption(key: filterAbTagOption).isNotEmpty;
+}
+
 class AbModel {
   final abLoading = false.obs;
   final pullError = "".obs;
@@ -31,6 +36,7 @@ class AbModel {
   final RxMap<String, int> tagColors = Map<String, int>.fromEntries([]).obs;
   final peers = List<Peer>.empty(growable: true).obs;
   final sortTags = shouldSortTags().obs;
+  final filterByIntersection = filterAbTagByIntersection().obs;
   final retrying = false.obs;
   bool get emtpy => peers.isEmpty && tags.isEmpty;