Cleanup unused methods and return values in FWL code.

xfa/fwl/theme/cfwl_comboboxtp.cpp

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #include "xfa/fwl/theme/cfwl_comboboxtp.h"
 
 #include "xfa/fwl/core/cfwl_themebackground.h"
 #include "xfa/fwl/core/ifwl_combobox.h"
@@ skipping 11 matching lines @@
 CFWL_ComboBoxTP::CFWL_ComboBoxTP() {
   m_dwThemeID = 0;
 }
 
 CFWL_ComboBoxTP::~CFWL_ComboBoxTP() {}
 
 bool CFWL_ComboBoxTP::IsValidWidget(IFWL_Widget* pWidget) {
   return pWidget && pWidget->GetClassID() == FWL_Type::ComboBox;
 }
 
-FX_BOOL CFWL_ComboBoxTP::DrawBackground(CFWL_ThemeBackground* pParams) {
+void CFWL_ComboBoxTP::DrawBackground(CFWL_ThemeBackground* pParams) {
   if (!pParams)
-    return FALSE;
+    return;
+
   switch (pParams->m_iPart) {
     case CFWL_Part::Border: {
       DrawBorder(pParams->m_pGraphics, &pParams->m_rtPart, &pParams->m_matrix);
       break;
     }
     case CFWL_Part::Edge: {
       DrawEdge(pParams->m_pGraphics, pParams->m_pWidget->GetStyles(),
                &pParams->m_rtPart, &pParams->m_matrix);
       break;
     }
@@ skipping 21 matching lines @@
       break;
     }
     case CFWL_Part::DropDownButton: {
       DrawDropDownButton(pParams, pParams->m_dwStates, &pParams->m_matrix);
       break;
     }
     case CFWL_Part::StretchHandler: {
       DrawStrethHandler(pParams, 0, &pParams->m_matrix);
       break;
     }
-    default: { return FALSE; }
+    default:
+      break;
   }
-  return TRUE;
 }
+
 void CFWL_ComboBoxTP::DrawStrethHandler(CFWL_ThemeBackground* pParams,
                                         uint32_t dwStates,
                                         CFX_Matrix* pMatrix) {
   CFX_Path path;
   path.Create();
   path.AddRectangle(pParams->m_rtPart.left, pParams->m_rtPart.top,
                     pParams->m_rtPart.width - 1, pParams->m_rtPart.height);
   CFX_Color cr(ArgbEncode(0xff, 0xff, 0, 0));
   pParams->m_pGraphics->SetFillColor(&cr);
   pParams->m_pGraphics->FillPath(&path, FXFILL_WINDING, &pParams->m_matrix);
 }
+
 void* CFWL_ComboBoxTP::GetCapacity(CFWL_ThemePart* pThemePart,
                                    CFWL_WidgetCapacity dwCapacity) {
   if (dwCapacity == CFWL_WidgetCapacity::ComboFormHandler) {
     m_fValue = kComboFormHandler;
     return &m_fValue;
   }
   return CFWL_WidgetTP::GetCapacity(pThemePart, dwCapacity);
 }
 
 void CFWL_ComboBoxTP::DrawDropDownButton(CFWL_ThemeBackground* pParams,
                                          uint32_t dwStates,
                                          CFX_Matrix* pMatrix) {
   FWLTHEME_STATE eState = FWLTHEME_STATE_Normal;
   switch (dwStates) {
     case CFWL_PartState_Normal: {
       eState = FWLTHEME_STATE_Normal;
       break;
     }
     case CFWL_PartState_Hovered: {
       eState = FWLTHEME_STATE_Hover;
       break;
     }
     case CFWL_PartState_Pressed: {
       eState = FWLTHEME_STATE_Pressed;
       break;
     }
     case CFWL_PartState_Disabled: {
-      eState = FWLTHEME_STATE_Disabale;
+      eState = FWLTHEME_STATE_Disable;
       break;
     }
-    default: {}
+    default:
+      break;
   }
   DrawArrowBtn(pParams->m_pGraphics, &pParams->m_rtPart,
                FWLTHEME_DIRECTION_Down, eState, &pParams->m_matrix);
 }