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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_comboboxproxy.h"
      8 
      9 #include <memory>
     10 #include <utility>
     11 
     12 #include "xfa/fwl/cfwl_app.h"
     13 #include "xfa/fwl/cfwl_combobox.h"
     14 #include "xfa/fwl/cfwl_messagekillfocus.h"
     15 #include "xfa/fwl/cfwl_messagemouse.h"
     16 #include "xfa/fwl/cfwl_notedriver.h"
     17 
     18 CFWL_ComboBoxProxy::CFWL_ComboBoxProxy(
     19     CFWL_ComboBox* pComboBox,
     20     const CFWL_App* app,
     21     std::unique_ptr<CFWL_WidgetProperties> properties,
     22     CFWL_Widget* pOuter)
     23     : CFWL_FormProxy(app, std::move(properties), pOuter),
     24       m_bLButtonDown(false),
     25       m_bLButtonUpSelf(false),
     26       m_pComboBox(pComboBox) {}
     27 
     28 CFWL_ComboBoxProxy::~CFWL_ComboBoxProxy() {}
     29 
     30 void CFWL_ComboBoxProxy::OnProcessMessage(CFWL_Message* pMessage) {
     31   if (!pMessage)
     32     return;
     33 
     34   switch (pMessage->GetType()) {
     35     case CFWL_Message::Type::Mouse: {
     36       CFWL_MessageMouse* pMsg = static_cast<CFWL_MessageMouse*>(pMessage);
     37       switch (pMsg->m_dwCmd) {
     38         case FWL_MouseCommand::LeftButtonDown:
     39           OnLButtonDown(pMsg);
     40           break;
     41         case FWL_MouseCommand::LeftButtonUp:
     42           OnLButtonUp(pMsg);
     43           break;
     44         default:
     45           break;
     46       }
     47       break;
     48     }
     49     case CFWL_Message::Type::KillFocus:
     50       OnFocusChanged(pMessage, false);
     51       break;
     52     case CFWL_Message::Type::SetFocus:
     53       OnFocusChanged(pMessage, true);
     54       break;
     55     default:
     56       break;
     57   }
     58   CFWL_Widget::OnProcessMessage(pMessage);
     59 }
     60 
     61 void CFWL_ComboBoxProxy::OnDrawWidget(CXFA_Graphics* pGraphics,
     62                                       const CFX_Matrix& matrix) {
     63   m_pComboBox->DrawStretchHandler(pGraphics, &matrix);
     64 }
     65 
     66 void CFWL_ComboBoxProxy::OnLButtonDown(CFWL_Message* pMessage) {
     67   const CFWL_App* pApp = GetOwnerApp();
     68   if (!pApp)
     69     return;
     70 
     71   CFWL_NoteDriver* pDriver =
     72       static_cast<CFWL_NoteDriver*>(pApp->GetNoteDriver());
     73   CFWL_MessageMouse* pMsg = static_cast<CFWL_MessageMouse*>(pMessage);
     74   if (CFX_RectF(0, 0, GetWidgetRect().Size()).Contains(pMsg->m_pos)) {
     75     m_bLButtonDown = true;
     76     pDriver->SetGrab(this, true);
     77   } else {
     78     m_bLButtonDown = false;
     79     pDriver->SetGrab(this, false);
     80     m_pComboBox->ShowDropList(false);
     81   }
     82 }
     83 
     84 void CFWL_ComboBoxProxy::OnLButtonUp(CFWL_Message* pMessage) {
     85   m_bLButtonDown = false;
     86   const CFWL_App* pApp = GetOwnerApp();
     87   if (!pApp)
     88     return;
     89 
     90   CFWL_NoteDriver* pDriver =
     91       static_cast<CFWL_NoteDriver*>(pApp->GetNoteDriver());
     92   pDriver->SetGrab(this, false);
     93   if (!m_bLButtonUpSelf) {
     94     m_bLButtonUpSelf = true;
     95     return;
     96   }
     97 
     98   CFWL_MessageMouse* pMsg = static_cast<CFWL_MessageMouse*>(pMessage);
     99   if (!CFX_RectF(0, 0, GetWidgetRect().Size()).Contains(pMsg->m_pos) &&
    100       m_pComboBox->IsDropListVisible()) {
    101     m_pComboBox->ShowDropList(false);
    102   }
    103 }
    104 
    105 void CFWL_ComboBoxProxy::OnFocusChanged(CFWL_Message* pMessage, bool bSet) {
    106   if (bSet)
    107     return;
    108 
    109   CFWL_MessageKillFocus* pMsg = static_cast<CFWL_MessageKillFocus*>(pMessage);
    110   if (!pMsg->m_pSetFocus)
    111     m_pComboBox->ShowDropList(false);
    112 }
    113