From c77072d586bf7aca58e6465ceab3d11a0be0021f Mon Sep 17 00:00:00 2001
From: Yuqian Yang <crupest@crupest.life>
Date: Mon, 15 Dec 2025 21:27:33 +0800
Subject: Clean up mapper codes.

---
 src/ui/mapper/BrushMapper.cpp | 36 +++++++++++++++++++-----------------
 1 file changed, 19 insertions(+), 17 deletions(-)

(limited to 'src/ui/mapper/BrushMapper.cpp')

diff --git a/src/ui/mapper/BrushMapper.cpp b/src/ui/mapper/BrushMapper.cpp
index 6a3d7941..d6fb8e4c 100644
--- a/src/ui/mapper/BrushMapper.cpp
+++ b/src/ui/mapper/BrushMapper.cpp
@@ -1,10 +1,9 @@
 #include "cru/ui/mapper/BrushMapper.h"
-#include "cru/base/StringUtil.h"
 #include "cru/base/xml/XmlNode.h"
-#include "cru/platform/Color.h"
 #include "cru/platform/graphics/Brush.h"
 #include "cru/platform/graphics/Factory.h"
 #include "cru/platform/gui/UiApplication.h"
+#include "cru/ui/mapper/Mapper.h"
 #include "cru/ui/mapper/MapperRegistry.h"
 
 #include <memory>
@@ -12,31 +11,34 @@
 namespace cru::ui::mapper {
 bool BrushMapper::XmlElementIsOfThisType(xml::XmlElementNode* node) {
   auto color_mapper = MapperRegistry::GetInstance()->GetMapper<Color>();
-  return color_mapper->XmlElementIsOfThisType(node) ||
-         cru::string::CaseInsensitiveCompare(node->GetTag(), "Brush") == 0;
+  return color_mapper->XmlElementIsOfThisType(node) || node->HasTag("Brush");
 }
 
 std::shared_ptr<platform::graphics::IBrush> BrushMapper::DoMapFromXml(
     xml::XmlElementNode* node) {
+  auto graphics_factory =
+      platform::gui::IUiApplication::GetInstance()->GetGraphicsFactory();
   auto color_mapper = MapperRegistry::GetInstance()->GetMapper<Color>();
 
-  Color color = colors::transparent;
+  try {
+    auto color = color_mapper->MapFromXml(node);
+    return graphics_factory->CreateSolidColorBrush(color);
+  } catch (const MapException&) {
+  }
 
-  if (color_mapper->XmlElementIsOfThisType(node)) {
-    color = color_mapper->MapFromXml(node);
-  } else {
-    for (auto child : node->GetChildren()) {
-      if (child->IsElementNode()) {
-        auto c = child->AsElement();
-        if (color_mapper->XmlElementIsOfThisType(node)) {
-          color = color_mapper->MapFromXml(node);
-        }
+  for (auto child : node->GetChildren()) {
+    if (auto c = child->AsElement()) {
+      if (color_mapper->XmlElementIsOfThisType(node)) {
+        auto color = color_mapper->MapFromXml(node);
+        return graphics_factory->CreateSolidColorBrush(color);
+      } else {
+        throw MapException("Invalid child element of Brush.");
       }
+    } else if (child->IsTextNode()) {
+      throw MapException("Text node is not allowed in Brush.");
     }
   }
 
-  return platform::gui::IUiApplication::GetInstance()
-      ->GetGraphicsFactory()
-      ->CreateSolidColorBrush(color);
+  throw MapException("Brush doesn't have content.");
 }
 }  // namespace cru::ui::mapper
-- 
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