Merge the CFWL_*Imp classes into the IFWL_* classes.

xfa/fwl/core/ifwl_comboedit.cpp

+// Copyright 2016 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/core/ifwl_comboedit.h"
+
+#include "xfa/fde/cfde_txtedtengine.h"
+#include "xfa/fwl/core/ifwl_combobox.h"
+
+// static
+IFWL_ComboEdit* IFWL_ComboEdit::Create(
+    const CFWL_WidgetImpProperties& properties,
+    IFWL_Widget* pOuter) {
+  return new IFWL_ComboEdit(properties, pOuter);
+}
+
+IFWL_ComboEdit::IFWL_ComboEdit(const CFWL_WidgetImpProperties& properties,
+                               IFWL_Widget* pOuter)
+    : IFWL_Edit(properties, pOuter) {
+  m_pOuter = static_cast<IFWL_ComboBox*>(pOuter);
+}
+
+void IFWL_ComboEdit::ClearSelected() {
+  ClearSelections();
+  Repaint(&m_rtClient);
+}
+
+void IFWL_ComboEdit::SetSelected() {
+  FlagFocus(TRUE);
+  EndCaret();
+  AddSelRange(0);
+}
+
+void IFWL_ComboEdit::EndCaret() {
+  m_pEdtEngine->MoveCaretPos(MC_End);
+}
+
+void IFWL_ComboEdit::FlagFocus(FX_BOOL bSet) {
+  if (bSet) {
+    m_pProperties->m_dwStates |= FWL_WGTSTATE_Focused;
+  } else {
+    m_pProperties->m_dwStates &= ~FWL_WGTSTATE_Focused;
+    ShowCaret(FALSE);
+  }
+}
+
+void IFWL_ComboEdit::SetComboBoxFocus(FX_BOOL bSet) {
+  m_pOuter->SetFocus(bSet);
+}
+
+CFWL_ComboEditImpDelegate::CFWL_ComboEditImpDelegate(IFWL_ComboEdit* pOwner)
+    : CFWL_EditImpDelegate(pOwner), m_pOwner(pOwner) {}
+
+void CFWL_ComboEditImpDelegate::OnProcessMessage(CFWL_Message* pMessage) {
+  if (!pMessage)
+    return;
+
+  FX_BOOL backDefault = TRUE;
+  switch (pMessage->GetClassID()) {
+    case CFWL_MessageType::SetFocus: {
+      m_pOwner->m_pProperties->m_dwStates |= FWL_WGTSTATE_Focused;
+      backDefault = FALSE;
+      break;
+    }
+    case CFWL_MessageType::KillFocus: {
+      m_pOwner->m_pProperties->m_dwStates &= ~FWL_WGTSTATE_Focused;
+      backDefault = FALSE;
+      break;
+    }
+    case CFWL_MessageType::Mouse: {
+      CFWL_MsgMouse* pMsg = static_cast<CFWL_MsgMouse*>(pMessage);
+      if ((pMsg->m_dwCmd == FWL_MouseCommand::LeftButtonDown) &&
+          ((m_pOwner->m_pProperties->m_dwStates & FWL_WGTSTATE_Focused) == 0)) {
+        m_pOwner->SetSelected();
+        m_pOwner->SetComboBoxFocus(TRUE);
+      }
+      break;
+    }
+    default:
+      break;
+  }
+  if (backDefault)
+    CFWL_EditImpDelegate::OnProcessMessage(pMessage);
+}