imp(dom-adapters): save formatting on block split

packages/dom-adapters/src/BlockToolAdapter/index.ts

@@ -359,6 +359,16 @@ export class BlockToolAdapter implements BlockToolAdapterInterface {
     const currentValue = this.#model.getText(this.#blockIndex, key);
     const newValueAfter = currentValue.slice(end);
 
+    const relatedFragments = this.#model.getFragments(this.#blockIndex, key, end, currentValue.length);
+
+    /**
+     * Fragment ranges bounds should be decreased by end index, because end is the index of the first character of the new block
+     */
+    relatedFragments.forEach(fragment => {
+      fragment.range[0] = Math.max(0, fragment.range[0] - end);
+      fragment.range[1] -= end;
+    });
+
     this.#model.removeText(this.#config.userId, this.#blockIndex, key, start, currentValue.length);
     this.#model.addBlock(
       this.#config.userId,
@@ -368,7 +378,7 @@ export class BlockToolAdapter implements BlockToolAdapterInterface {
           [key]: {
             $t: 't',
             value: newValueAfter,
-            fragments: [],
+            fragments: relatedFragments,
           },
         },
       },

packages/dom-adapters/src/CaretAdapter/index.ts

@@ -264,21 +264,29 @@ export class CaretAdapter extends EventTarget {
 
     const selection = document.getSelection()!;
 
-    let absoluteStartOffset = getAbsoluteRangeOffset(input, selection.anchorNode!, selection.anchorOffset);
-    let absoluteEndOffset = getAbsoluteRangeOffset(input, selection.focusNode!, selection.focusOffset);
+    let isStartEqualsCurrent = false;
+    let isEndEqualsCurrent = false;
+
+    const start = getBoundaryPointByAbsoluteOffset(input, textRange[0]);
+    const end = getBoundaryPointByAbsoluteOffset(input, textRange[1]);
 
     /**
-     * For right-to-left selection, we need to swap start and end offsets to compare with model range
+     * If selection is outside of the input, it is different from the model range
      */
-    if (absoluteStartOffset > absoluteEndOffset) {
-      [absoluteStartOffset, absoluteEndOffset] = [absoluteEndOffset, absoluteStartOffset];
-    }
+    if (input.contains(selection.anchorNode!) && input.contains(selection.focusNode!)) {
+      let absoluteStartOffset = getAbsoluteRangeOffset(input, selection.anchorNode!, selection.anchorOffset);
+      let absoluteEndOffset = getAbsoluteRangeOffset(input, selection.focusNode!, selection.focusOffset);
 
-    const start = getBoundaryPointByAbsoluteOffset(input, textRange[0]);
-    const end = getBoundaryPointByAbsoluteOffset(input, textRange[1]);
+      /**
+       * For right-to-left selection, we need to swap start and end offsets to compare with model range
+       */
+      if (absoluteStartOffset > absoluteEndOffset) {
+        [absoluteStartOffset, absoluteEndOffset] = [absoluteEndOffset, absoluteStartOffset];
+      }
 
-    const isStartEqualsCurrent = textRange[0] === absoluteStartOffset;
-    const isEndEqualsCurrent = textRange[1] === absoluteEndOffset;
+      isStartEqualsCurrent = textRange[0] === absoluteStartOffset;
+      isEndEqualsCurrent = textRange[1] === absoluteEndOffset;
+    }
 
     /**
      * If selection is already the same, we don't need to update it to not interrupt browser's behaviour