Bug 1627175 - part 63: Get rid of `HTMLEditor::IsNextCharInNodeWhiteSpace()` r=m_kato

Similarly, it's called only by `HTMLEditor::GetWhiteSpaceEndPoint()` and
it returns after point of last white-space if and only if the given point
container is a text node and the offset is not end of the text node.
Therefore, we can reimplement it in the caller simply.

Differential Revision: https://phabricator.services.mozilla.com/D115172

editor/libeditor/HTMLEditSubActionHandler.cpp

@@ -5502,23 +5502,16 @@ EditorDOMPoint HTMLEditor::GetWhiteSpaceEndPoint(
     return point;
   }
 
-  bool isSpace = false, isNBSP = false;
-  nsIContent* newContent = aPoint.Container()->AsContent();
-  int32_t newOffset = *aPoint.Offset(
-      RangeBoundaryBase<PT, RT>::OffsetFilter::kValidOrInvalidOffsets);
-  while (newContent) {
-    int32_t offset = -1;
-    nsCOMPtr<nsIContent> content;
-    HTMLEditor::IsNextCharInNodeWhiteSpace(newContent, newOffset, &isSpace,
-                                           &isNBSP, getter_AddRefs(content),
-                                           &offset);
-    if (!isSpace && !isNBSP) {
-      break;
+  EditorDOMPoint point(aPoint);
+  if (point.IsInTextNode()) {
+    while (!point.IsEndOfContainer()) {
+      if (!point.IsCharASCIISpaceOrNBSP()) {
+        break;
+      }
+      MOZ_ALWAYS_TRUE(point.AdvanceOffset());
     }
-    newContent = content;
-    newOffset = offset;
   }
-  return EditorDOMPoint(newContent, newOffset);
+  return point;
 }
 
 template <typename PT, typename RT>

editor/libeditor/HTMLEditor.cpp

@@ -899,36 +899,6 @@ NS_IMETHODIMP HTMLEditor::NodeIsBlock(nsINode* aNode, bool* aIsBlock) {
   return NS_OK;
 }
 
-/**
- * IsNextCharInNodeWhiteSpace() checks the adjacent content in the same node to
- * see if following selection is white-space or nbsp.
- */
-void HTMLEditor::IsNextCharInNodeWhiteSpace(nsIContent* aContent,
-                                            int32_t aOffset, bool* outIsSpace,
-                                            bool* outIsNBSP,
-                                            nsIContent** outNode,
-                                            int32_t* outOffset) {
-  MOZ_ASSERT(aContent && outIsSpace && outIsNBSP);
-  MOZ_ASSERT((outNode && outOffset) || (!outNode && !outOffset));
-  *outIsSpace = false;
-  *outIsNBSP = false;
-  if (outNode && outOffset) {
-    *outNode = nullptr;
-    *outOffset = -1;
-  }
-
-  if (aContent->IsText() && (uint32_t)aOffset < aContent->Length()) {
-    char16_t ch = aContent->GetText()->CharAt(aOffset);
-    *outIsSpace = nsCRT::IsAsciiSpace(ch);
-    *outIsNBSP = (ch == kNBSP);
-    if (outNode && outOffset) {
-      NS_IF_ADDREF(*outNode = aContent);
-      // yes, this is _past_ the character
-      *outOffset = aOffset + 1;
-    }
-  }
-}
-
 NS_IMETHODIMP HTMLEditor::UpdateBaseURL() {
   RefPtr<Document> document = GetDocument();
   if (NS_WARN_IF(!document)) {

editor/libeditor/HTMLEditor.h

@@ -799,11 +799,6 @@ class HTMLEditor final : public TextEditor,
    */
   MOZ_CAN_RUN_SCRIPT nsresult DeleteTableCellContentsWithTransaction();
 
-  static void IsNextCharInNodeWhiteSpace(nsIContent* aContent, int32_t aOffset,
-                                         bool* outIsSpace, bool* outIsNBSP,
-                                         nsIContent** outNode = nullptr,
-                                         int32_t* outOffset = 0);
-
   /**
    * extracts an element from the normal flow of the document and
    * positions it, and puts it back in the normal flow.