Remove m_pOldFocusWidget from CXFA_FFDocView.

It can be refactored to a local, then the local can be refactored
out too. There should be no functional changes.

Change-Id: I4b49cbf27736f856a567db5db952c03aba743818
Reviewed-on: https://pdfium-review.googlesource.com/29911
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>

2 files changed, 20 insertions, 26 deletions

diff --git a/xfa/fxfa/cxfa_ffdocview.cpp b/xfa/fxfa/cxfa_ffdocview.cpp
index 86a2a9fee9..51277c91ae 100644
--- a/xfa/fxfa/cxfa_ffdocview.cpp
+++ b/xfa/fxfa/cxfa_ffdocview.cpp
@@ -261,44 +261,40 @@ CXFA_FFDocView::CreateReadyNodeIterator() {
                    : nullptr;
 }
 
-bool CXFA_FFDocView::SetFocus(CXFA_FFWidget* hWidget) {
-  CXFA_FFWidget* pNewFocus = hWidget;
-  if (m_pOldFocusWidget == pNewFocus)
+bool CXFA_FFDocView::SetFocus(CXFA_FFWidget* pNewFocus) {
+  CXFA_FFWidget* pOldFocus = m_pFocusWidget.Get();
+
+  if (pOldFocus == pNewFocus)
     return false;
 
-  CXFA_FFWidget* pOldFocus = m_pOldFocusWidget.Get();
-  m_pOldFocusWidget = pNewFocus;
   if (pOldFocus) {
-    if (m_pFocusWidget != m_pOldFocusWidget &&
-        (pOldFocus->GetStatus() & XFA_WidgetStatus_Focused)) {
-      m_pFocusWidget = pOldFocus;
-      pOldFocus->OnKillFocus(pNewFocus);
-    } else if ((pOldFocus->GetStatus() & XFA_WidgetStatus_Visible)) {
+    if (!(pOldFocus->GetStatus() & XFA_WidgetStatus_Focused) &&
+        (pOldFocus->GetStatus() & XFA_WidgetStatus_Visible)) {
       if (!pOldFocus->IsLoaded())
         pOldFocus->LoadWidget();
 
-      pOldFocus->OnSetFocus(m_pFocusWidget.Get());
-      m_pFocusWidget = pOldFocus;
-      pOldFocus->OnKillFocus(pNewFocus);
+      pOldFocus->OnSetFocus(pOldFocus);
     }
-  }
-  if (m_pFocusWidget == m_pOldFocusWidget)
-    return false;
 
-  pNewFocus = m_pOldFocusWidget.Get();
-  if (pNewFocus && (pNewFocus->GetStatus() & XFA_WidgetStatus_Visible)) {
-    if (!pNewFocus->IsLoaded())
-      pNewFocus->LoadWidget();
-    pNewFocus->OnSetFocus(m_pFocusWidget.Get());
+    pOldFocus->OnKillFocus(pNewFocus);
   }
+
   if (pNewFocus) {
+    if (pNewFocus->GetStatus() & XFA_WidgetStatus_Visible) {
+      if (!pNewFocus->IsLoaded())
+        pNewFocus->LoadWidget();
+
+      pNewFocus->OnSetFocus(pOldFocus);
+    }
+
     CXFA_Node* node = pNewFocus->GetNode();
     m_pFocusNode = node->IsWidgetReady() ? node : nullptr;
+    m_pFocusWidget = pNewFocus;
   } else {
     m_pFocusNode = nullptr;
+    m_pFocusWidget = nullptr;
   }
-  m_pFocusWidget = pNewFocus;
-  m_pOldFocusWidget = m_pFocusWidget;
+
   return true;
 }
 
@@ -323,7 +319,6 @@ void CXFA_FFDocView::DeleteLayoutItem(CXFA_FFWidget* pWidget) {
 
   m_pFocusNode = nullptr;
   m_pFocusWidget = nullptr;
-  m_pOldFocusWidget = nullptr;
 }
 
 static int32_t XFA_ProcessEvent(CXFA_FFDocView* pDocView,
diff --git a/xfa/fxfa/cxfa_ffdocview.h b/xfa/fxfa/cxfa_ffdocview.h
index dbc7672caa..2b8358264c 100644
--- a/xfa/fxfa/cxfa_ffdocview.h
+++ b/xfa/fxfa/cxfa_ffdocview.h
@@ -60,7 +60,7 @@ class CXFA_FFDocView {
   CXFA_FFWidgetHandler* GetWidgetHandler();
   std::unique_ptr<CXFA_ReadyNodeIterator> CreateReadyNodeIterator();
   CXFA_FFWidget* GetFocusWidget() const { return m_pFocusWidget.Get(); }
-  bool SetFocus(CXFA_FFWidget* hWidget);
+  bool SetFocus(CXFA_FFWidget* pNewFocus);
   CXFA_FFWidget* GetWidgetForNode(CXFA_Node* node);
   CXFA_FFWidget* GetWidgetByName(const WideString& wsName,
                                  CXFA_FFWidget* pRefWidget);
@@ -118,7 +118,6 @@ class CXFA_FFDocView {
   CXFA_LayoutProcessor* m_pXFADocLayout = nullptr;  // Not owned.
   UnownedPtr<CXFA_Node> m_pFocusNode;
   UnownedPtr<CXFA_FFWidget> m_pFocusWidget;
-  UnownedPtr<CXFA_FFWidget> m_pOldFocusWidget;
   std::vector<CXFA_Node*> m_ValidateNodes;
   std::vector<CXFA_Node*> m_CalculateNodes;
   std::vector<CXFA_BindItems*> m_BindItems;