Convert CXFA_XMLLocale to CFX_XML

This CL converts CXFA_XMLLocale to use CFX_XML instead of CXML.

Change-Id: I1db617a658548ae5979f2f38d72c5b3000998663
Reviewed-on: https://pdfium-review.googlesource.com/30693
Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>

2 files changed, 26 insertions, 0 deletions

diff --git a/core/fxcrt/xml/cfx_xmlelement.cpp b/core/fxcrt/xml/cfx_xmlelement.cpp
index 530752e1dd..27d136305b 100644
--- a/core/fxcrt/xml/cfx_xmlelement.cpp
+++ b/core/fxcrt/xml/cfx_xmlelement.cpp
@@ -119,3 +119,25 @@ void CFX_XMLElement::Save(
   }
   pXMLStream->WriteString(ws.AsStringView());
 }
+
+CFX_XMLElement* CFX_XMLElement::GetFirstChildNamed(
+    const WideStringView& name) const {
+  return GetNthChildNamed(name, 0);
+}
+
+CFX_XMLElement* CFX_XMLElement::GetNthChildNamed(const WideStringView& name,
+                                                 size_t idx) const {
+  for (auto* child = GetFirstChild(); child; child = child->GetNextSibling()) {
+    if (child->GetType() != FX_XMLNODE_Element)
+      continue;
+
+    CFX_XMLElement* elem = static_cast<CFX_XMLElement*>(child);
+    if (elem->GetName() != name)
+      continue;
+    if (idx == 0)
+      return elem;
+
+    --idx;
+  }
+  return nullptr;
+}
diff --git a/core/fxcrt/xml/cfx_xmlelement.h b/core/fxcrt/xml/cfx_xmlelement.h
index e665e24a98..f713114eb7 100644
--- a/core/fxcrt/xml/cfx_xmlelement.h
+++ b/core/fxcrt/xml/cfx_xmlelement.h
@@ -23,6 +23,10 @@ class CFX_XMLElement : public CFX_XMLAttributeNode {
   std::unique_ptr<CFX_XMLNode> Clone() override;
   void Save(const RetainPtr<CFX_SeekableStreamProxy>& pXMLStream) override;
 
+  CFX_XMLElement* GetFirstChildNamed(const WideStringView& name) const;
+  CFX_XMLElement* GetNthChildNamed(const WideStringView& name,
+                                   size_t idx) const;
+
   WideString GetLocalTagName() const;
   WideString GetNamespacePrefix() const;
   WideString GetNamespaceURI() const;