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      1 // Copyright 2016 PDFium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
      6 
      7 #include "xfa/fwl/cfwl_comboedit.h"
      8 
      9 #include <memory>
     10 #include <utility>
     11 
     12 #include "xfa/fde/cfde_txtedtengine.h"
     13 #include "xfa/fwl/cfwl_combobox.h"
     14 #include "xfa/fwl/cfwl_messagemouse.h"
     15 
     16 CFWL_ComboEdit::CFWL_ComboEdit(
     17     const CFWL_App* app,
     18     std::unique_ptr<CFWL_WidgetProperties> properties,
     19     CFWL_Widget* pOuter)
     20     : CFWL_Edit(app, std::move(properties), pOuter) {
     21   m_pOuter = static_cast<CFWL_ComboBox*>(pOuter);
     22 }
     23 
     24 void CFWL_ComboEdit::ClearSelected() {
     25   ClearSelections();
     26   RepaintRect(GetRTClient());
     27 }
     28 
     29 void CFWL_ComboEdit::SetSelected() {
     30   FlagFocus(true);
     31   GetTxtEdtEngine()->MoveCaretPos(MC_End);
     32   AddSelRange(0);
     33 }
     34 
     35 void CFWL_ComboEdit::FlagFocus(bool bSet) {
     36   if (bSet) {
     37     m_pProperties->m_dwStates |= FWL_WGTSTATE_Focused;
     38     return;
     39   }
     40 
     41   m_pProperties->m_dwStates &= ~FWL_WGTSTATE_Focused;
     42   HideCaret(nullptr);
     43 }
     44 
     45 void CFWL_ComboEdit::OnProcessMessage(CFWL_Message* pMessage) {
     46   if (!pMessage)
     47     return;
     48 
     49   bool backDefault = true;
     50   switch (pMessage->GetType()) {
     51     case CFWL_Message::Type::SetFocus: {
     52       m_pProperties->m_dwStates |= FWL_WGTSTATE_Focused;
     53       backDefault = false;
     54       break;
     55     }
     56     case CFWL_Message::Type::KillFocus: {
     57       m_pProperties->m_dwStates &= ~FWL_WGTSTATE_Focused;
     58       backDefault = false;
     59       break;
     60     }
     61     case CFWL_Message::Type::Mouse: {
     62       CFWL_MessageMouse* pMsg = static_cast<CFWL_MessageMouse*>(pMessage);
     63       if ((pMsg->m_dwCmd == FWL_MouseCommand::LeftButtonDown) &&
     64           ((m_pProperties->m_dwStates & FWL_WGTSTATE_Focused) == 0)) {
     65         SetSelected();
     66         m_pOuter->SetFocus(true);
     67       }
     68       break;
     69     }
     70     default:
     71       break;
     72   }
     73   if (backDefault)
     74     CFWL_Edit::OnProcessMessage(pMessage);
     75 }
     76