[SelectMisspellingAsync #1] Move SelectMisspellingAsync() from ContextMenuClient.cpp to SpellChecker

third_party/WebKit/Source/core/editing/spellcheck/SpellChecker.cpp

Index: third_party/WebKit/Source/core/editing/spellcheck/SpellChecker.cpp
diff --git a/third_party/WebKit/Source/core/editing/spellcheck/SpellChecker.cpp b/third_party/WebKit/Source/core/editing/spellcheck/SpellChecker.cpp
index eb4aaa750b5ef613b2ad7fec13d5a73d57e3463b..6b0d4b48baa2134574fcaff24012bd4c09f3a720 100644
--- a/third_party/WebKit/Source/core/editing/spellcheck/SpellChecker.cpp
+++ b/third_party/WebKit/Source/core/editing/spellcheck/SpellChecker.cpp
@@ -94,6 +94,10 @@ SelectionInDOMTree SelectWord(const VisiblePosition& position) {
       .Build();
 }
 
+static bool IsWhiteSpaceOrPunctuation(UChar c) {
+  return IsSpaceOrNewline(c) || WTF::Unicode::IsPunct(c);
+}
+
 }  // namespace
 
 SpellChecker* SpellChecker::Create(LocalFrame& frame) {
@@ -867,6 +871,36 @@ SpellChecker::GetSpellCheckMarkerUnderSelection() {
   return std::make_pair(selection_start_container, ToSpellCheckMarker(marker));
 }
 
+String SpellChecker::SelectMisspellingAsync(String& description) {
+  const Optional<std::pair<Node*, SpellCheckMarker*>>& node_and_marker =
+      GetSpellCheckMarkerUnderSelection();
+  if (!node_and_marker)
+    return String();
+
+  Node* const marker_node = node_and_marker.value().first;
+  const SpellCheckMarker* const marker = node_and_marker.value().second;
+  description = marker->Description();
+
+  Range* const marker_range =
+      Range::Create(*GetFrame().GetDocument(), marker_node,
+                    marker->StartOffset(), marker_node, marker->EndOffset());
+
+  VisibleSelection selection =
+      GetFrame().Selection().ComputeVisibleSelectionInDOMTree();
+  // Caret and range selections (one of which we must have since we found a
+  // marker) always return valid normalized ranges.
+  const EphemeralRange& selection_range =
+      selection.ToNormalizedEphemeralRange();
+
+  if (marker_range->GetText().StripWhiteSpace(&IsWhiteSpaceOrPunctuation) !=
+      CreateRange(selection_range)
+          ->GetText()
+          .StripWhiteSpace(&IsWhiteSpaceOrPunctuation))
+    return String();
+
+  return marker_range->GetText();
+}
+
 void SpellChecker::ReplaceMisspelledRange(const String& text) {
   const Optional<std::pair<Node*, SpellCheckMarker*>>& node_and_marker =
       GetSpellCheckMarkerUnderSelection();