RIDER-114196 Sticky lines: add api to receive notification when all sticky lines are removed

GitOrigin-RevId: e97a4ab6523f03c5a452323375548f2c91048023

platform/platform-impl/src/com/intellij/openapi/editor/impl/stickyLines/StickyLinesCollector.kt

@@ -126,7 +126,7 @@ class StickyLinesCollector(private val project: Project, private val document: D
       ", old removed: ${outdatedLines.size}" +
       ", ${debugPsiFile(psiFile)}"
     }
-    stickyModel.notifyListeners()
+    stickyModel.notifyLinesUpdate()
   }
 
   private fun stickyLinesModel(psiFile: PsiFile): StickyLinesModel? {

platform/platform-impl/src/com/intellij/openapi/editor/impl/stickyLines/StickyLinesManager.kt

@@ -102,10 +102,13 @@ internal class StickyLinesManager(
     }
   }
 
-  override fun modelChanged() {
+  override fun linesUpdated() {
     recalculateAndRepaintLines()
   }
 
+  override fun linesRemoved() {
+  }
+
   override fun dispose() {
     stickyModel.removeListener(this)
   }

platform/platform-impl/src/com/intellij/openapi/editor/impl/stickyLines/StickyLinesModel.java

@@ -48,7 +48,7 @@ public interface StickyLinesModel {
 
   void removeListener(@NotNull Listener listener);
 
-  void notifyListeners();
+  void notifyLinesUpdate();
 
   /**
    * Marker associated with sticky line to distinguish the highlighting daemon which produced the line.
@@ -68,6 +68,14 @@ public interface StickyLinesModel {
   }
 
   interface Listener {
-    void modelChanged();
+    /**
+     * Called when a batch of sticky lines is added or removed
+     */
+    void linesUpdated();
+
+    /**
+     * Called when all sticky lines are removed
+     */
+    void linesRemoved();
   }
 }

platform/platform-impl/src/com/intellij/openapi/editor/impl/stickyLines/StickyLinesModelImpl.java

@@ -145,9 +145,9 @@ public final class StickyLinesModelImpl implements StickyLinesModel {
   }
 
   @Override
-  public void notifyListeners() {
+  public void notifyLinesUpdate() {
     for (Listener listener : myListeners) {
-      listener.modelChanged();
+      listener.linesUpdated();
     }
   }
 
@@ -159,6 +159,9 @@ public final class StickyLinesModelImpl implements StickyLinesModel {
     for (StickyLine line : getAllStickyLines()) {
       removeStickyLine(line);
     }
+    for (Listener listener : myListeners) {
+      listener.linesRemoved();
+    }
     if (project != null) {
       restartStickyLinesPass(project);
     }