Allow clearing of CodeLineEditingController's undo and redo stack #37

MegatronKing · MegatronKing · commit a610e278a0f6 · 2024-09-06T12:00:15.000+08:00
diff --git a/lib/src/_code_line.dart b/lib/src/_code_line.dart
@@ -1057,6 +1057,11 @@ class _CodeLineEditingControllerImpl extends ValueNotifier<CodeLineEditingValue>
     );
   }
 
+  @override
+  void clearHistory() {
+    _cache.clear();
+  }
+
   @override
   int index2lineIndex(int index) => codeLines.index2lineIndex(index);
 
@@ -1992,6 +1997,11 @@ class _CodeLineEditingCache {
     }
   }
 
+  void clear() {
+    _node = _CodeLineEditingCacheNode(controller.value);
+    _markNewRecord = false;
+  }
+
   void dispose() {
     controller.removeListener(_onValueChanged);
   }
@@ -2189,6 +2199,11 @@ class _CodeLineEditingControllerDelegate implements CodeLineEditingController {
     _delegate.clearComposing();
   }
 
+  @override
+  void clearHistory() {
+    _delegate.clearHistory();
+  }
+
   @override
   void collapseChunk(int index, int end) {
     _delegate.collapseChunk(index, end);
diff --git a/lib/src/code_line.dart b/lib/src/code_line.dart
@@ -331,6 +331,9 @@ abstract class CodeLineEditingController extends ValueNotifier<CodeLineEditingVa
   /// actions, not during the build, layout, or paint phases.
   void clearComposing();
 
+  /// Clear the undo and redo history.
+  void clearHistory();
+
   /// Collapse codes form [start] to [end].
   void collapseChunk(int start, int end);
 
