Use unique_ptr in CFWL_NoteDriver::m_eventTargets map

Invert CFWL_EventTarget::m_bInvalid for the sake of
positive logic.

Change-Id: I9ccc512ab2ff553e1033698f36bf3a297c4ee7c9
Reviewed-on: https://pdfium-review.googlesource.com/4251
Commit-Queue: dsinclair <dsinclair@chromium.org>
Commit-Queue: Tom Sepez <tsepez@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>

5 files changed, 14 insertions, 21 deletions

diff --git a/xfa/fwl/cfwl_eventtarget.cpp b/xfa/fwl/cfwl_eventtarget.cpp
index 55f8e1fc78..8a3b78799b 100644
--- a/xfa/fwl/cfwl_eventtarget.cpp
+++ b/xfa/fwl/cfwl_eventtarget.cpp
@@ -10,7 +10,7 @@
 #include "xfa/fwl/ifwl_widgetdelegate.h"
 
 CFWL_EventTarget::CFWL_EventTarget(CFWL_Widget* pListener)
-    : m_pListener(pListener), m_bInvalid(false) {}
+    : m_pListener(pListener), m_bValid(true) {}
 
 CFWL_EventTarget::~CFWL_EventTarget() {}
 
diff --git a/xfa/fwl/cfwl_eventtarget.h b/xfa/fwl/cfwl_eventtarget.h
index 1bca97232c..36d301df27 100644
--- a/xfa/fwl/cfwl_eventtarget.h
+++ b/xfa/fwl/cfwl_eventtarget.h
@@ -23,13 +23,13 @@ class CFWL_EventTarget {
   void SetEventSource(CFWL_Widget* pSource);
   bool ProcessEvent(CFWL_Event* pEvent);
 
-  bool IsInvalid() const { return m_bInvalid; }
-  void FlagInvalid() { m_bInvalid = true; }
+  bool IsValid() const { return m_bValid; }
+  void FlagInvalid() { m_bValid = false; }
 
  private:
   std::set<CFWL_Widget*> m_widgets;
   CFWL_Widget* m_pListener;
-  bool m_bInvalid;
+  bool m_bValid;
 };
 
 #endif  // XFA_FWL_CFWL_EVENTTARGET_H_
diff --git a/xfa/fwl/cfwl_notedriver.cpp b/xfa/fwl/cfwl_notedriver.cpp
index 8feb0fb4e5..9012100c32 100644
--- a/xfa/fwl/cfwl_notedriver.cpp
+++ b/xfa/fwl/cfwl_notedriver.cpp
@@ -31,18 +31,12 @@ CFWL_NoteDriver::CFWL_NoteDriver()
   PushNoteLoop(m_pNoteLoop.get());
 }
 
-CFWL_NoteDriver::~CFWL_NoteDriver() {
-  ClearEventTargets(true);
-}
+CFWL_NoteDriver::~CFWL_NoteDriver() {}
 
 void CFWL_NoteDriver::SendEvent(CFWL_Event* pNote) {
-  if (m_eventTargets.empty())
-    return;
-
   for (const auto& pair : m_eventTargets) {
-    CFWL_EventTarget* pEventTarget = pair.second;
-    if (pEventTarget && !pEventTarget->IsInvalid())
-      pEventTarget->ProcessEvent(pNote);
+    if (pair.second->IsValid())
+      pair.second->ProcessEvent(pNote);
   }
 }
 
@@ -56,7 +50,7 @@ void CFWL_NoteDriver::RegisterEventTarget(CFWL_Widget* pListener,
     pListener->SetEventKey(key);
   }
   if (!m_eventTargets[key])
-    m_eventTargets[key] = new CFWL_EventTarget(pListener);
+    m_eventTargets[key] = pdfium::MakeUnique<CFWL_EventTarget>(pListener);
 
   m_eventTargets[key]->SetEventSource(pEventSource);
 }
@@ -445,13 +439,11 @@ CFWL_Widget* CFWL_NoteDriver::GetMessageForm(CFWL_Widget* pDstTarget) {
   return pMessageForm;
 }
 
-void CFWL_NoteDriver::ClearEventTargets(bool bRemoveAll) {
+void CFWL_NoteDriver::ClearEventTargets() {
   auto it = m_eventTargets.begin();
   while (it != m_eventTargets.end()) {
     auto old = it++;
-    if (old->second && (bRemoveAll || old->second->IsInvalid())) {
-      delete old->second;
+    if (!old->second->IsValid())
       m_eventTargets.erase(old);
-    }
   }
 }
diff --git a/xfa/fwl/cfwl_notedriver.h b/xfa/fwl/cfwl_notedriver.h
index e177494ff1..2ea3f97cc0 100644
--- a/xfa/fwl/cfwl_notedriver.h
+++ b/xfa/fwl/cfwl_notedriver.h
@@ -30,7 +30,7 @@ class CFWL_NoteDriver {
 
   void RegisterEventTarget(CFWL_Widget* pListener, CFWL_Widget* pEventSource);
   void UnregisterEventTarget(CFWL_Widget* pListener);
-  void ClearEventTargets(bool bRemoveAll);
+  void ClearEventTargets();
 
   CFWL_NoteLoop* GetTopLoop() const;
   void PushNoteLoop(CFWL_NoteLoop* pNoteLoop);
@@ -69,7 +69,8 @@ class CFWL_NoteDriver {
   std::vector<CFWL_Widget*> m_Forms;
   std::deque<std::unique_ptr<CFWL_Message>> m_NoteQueue;
   std::vector<CFWL_NoteLoop*> m_NoteLoopQueue;
-  std::unordered_map<uint32_t, CFWL_EventTarget*> m_eventTargets;
+  std::unordered_map<uint32_t, std::unique_ptr<CFWL_EventTarget>>
+      m_eventTargets;
   CFWL_Widget* m_pHover;
   CFWL_Widget* m_pFocus;
   CFWL_Widget* m_pGrab;
diff --git a/xfa/fxfa/cxfa_ffapp.cpp b/xfa/fxfa/cxfa_ffapp.cpp
index c02fd30e86..a71112c93e 100644
--- a/xfa/fxfa/cxfa_ffapp.cpp
+++ b/xfa/fxfa/cxfa_ffapp.cpp
@@ -92,5 +92,5 @@ IFWL_AdapterTimerMgr* CXFA_FFApp::GetTimerMgr() const {
 }
 
 void CXFA_FFApp::ClearEventTargets() {
-  m_pFWLApp->GetNoteDriver()->ClearEventTargets(false);
+  m_pFWLApp->GetNoteDriver()->ClearEventTargets();
 }