feat: 补全弹幕关键词过滤

lib/pages/danmaku/controller.dart

@@ -3,10 +3,12 @@ import 'package:PiliPalaX/models/danmaku/dm.pb.dart';
 import 'package:flutter/cupertino.dart';
 
 class PlDanmakuController {
-  PlDanmakuController(this.cid, this.danmakuWeightNotifier);
+  PlDanmakuController(this.cid, this.danmakuWeightNotifier, this.danmakuFilterNotifier);
   final int cid;
   final ValueNotifier<int> danmakuWeightNotifier;
+  final ValueNotifier<List<Map<String, dynamic>>> danmakuFilterNotifier;
   int danmakuWeight = 0;
+  List<Map<String, dynamic>> danmakuFilter = [];
   Map<int, List<DanmakuElem>> dmSegMap = {};
   // 已请求的段落标记
   List<bool> requestedSeg = [];
@@ -24,6 +26,10 @@ class PlDanmakuController {
           "danmakuWeight changed from $danmakuWeight to ${danmakuWeightNotifier.value}");
       danmakuWeight = danmakuWeightNotifier.value;
     });
+    danmakuFilterNotifier.addListener(() {
+      print("danmakuFilter changed from $danmakuFilter to ${danmakuFilterNotifier.value}");
+      danmakuFilter = danmakuFilterNotifier.value;
+    });
     if (requestedSeg.isEmpty) {
       int segCount = (videoDuration / segmentLength).ceil();
       requestedSeg = List<bool>.generate(segCount, (index) => false);
@@ -32,6 +38,9 @@ class PlDanmakuController {
   }
 
   void dispose() {
+    danmakuWeightNotifier.removeListener(() {});
+    danmakuFilterNotifier.removeListener(() {});
+    danmakuFilter.clear();
     dmSegMap.clear();
     requestedSeg.clear();
   }
@@ -67,13 +76,36 @@ class PlDanmakuController {
     if (!requestedSeg[segmentIndex]) {
       queryDanmaku(segmentIndex);
     }
-    if (danmakuWeight == 0) {
+    if (danmakuWeight == 0 && danmakuFilter.isEmpty) {
       return dmSegMap[progress ~/ 100];
     } else {
-      //using filter
       return dmSegMap[progress ~/ 100]
           ?.where((element) => element.weight >= danmakuWeight)
+          .where(filterDanmaku)
           .toList();
     }
   }
+
+  bool filterDanmaku(DanmakuElem elem) {
+    for (var filter in danmakuFilter) {
+      switch (filter['type']) {
+        case 0:
+          if (elem.content.contains(filter['filter'])) {
+            return false;
+          }
+          break;
+        case 1:
+          if (RegExp(filter['filter']).hasMatch(elem.content)) {
+            return false;
+          }
+          break;
+        case 2:
+          if (elem.idStr == filter['filter']) {
+            return false;
+          }
+          break;
+      }
+    }
+    return true;
+  }
 }