1 files changed, 119 insertions, 0 deletions
diff --git a/xfa/fwl/core/cfwl_comboboxproxy.cpp b/xfa/fwl/core/cfwl_comboboxproxy.cpp
new file mode 100644
index 0000000000..c367eefb9c
--- /dev/null
+++ b/xfa/fwl/core/cfwl_comboboxproxy.cpp
@@ -0,0 +1,119 @@
+// 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/cfwl_comboboxproxy.h"
+
+#include <memory>
+#include <utility>
+
+#include "xfa/fwl/core/cfwl_app.h"
+#include "xfa/fwl/core/cfwl_msgkillfocus.h"
+#include "xfa/fwl/core/cfwl_msgmouse.h"
+#include "xfa/fwl/core/cfwl_notedriver.h"
+#include "xfa/fwl/core/ifwl_combobox.h"
+
+CFWL_ComboBoxProxy::CFWL_ComboBoxProxy(
+    IFWL_ComboBox* pComboBox,
+    const CFWL_App* app,
+    std::unique_ptr<CFWL_WidgetProperties> properties,
+    IFWL_Widget* pOuter)
+    : CFWL_FormProxy(app, std::move(properties), pOuter),
+      m_bLButtonDown(false),
+      m_bLButtonUpSelf(false),
+      m_pComboBox(pComboBox) {}
+
+CFWL_ComboBoxProxy::~CFWL_ComboBoxProxy() {}
+
+void CFWL_ComboBoxProxy::OnProcessMessage(CFWL_Message* pMessage) {
+  if (!pMessage)
+    return;
+
+  switch (pMessage->GetClassID()) {
+    case CFWL_MessageType::Mouse: {
+      CFWL_MsgMouse* pMsg = static_cast<CFWL_MsgMouse*>(pMessage);
+      switch (pMsg->m_dwCmd) {
+        case FWL_MouseCommand::LeftButtonDown:
+          OnLButtonDown(pMsg);
+          break;
+        case FWL_MouseCommand::LeftButtonUp:
+          OnLButtonUp(pMsg);
+          break;
+        default:
+          break;
+      }
+      break;
+    }
+    case CFWL_MessageType::KillFocus:
+      OnFocusChanged(pMessage, false);
+      break;
+    case CFWL_MessageType::SetFocus:
+      OnFocusChanged(pMessage, true);
+      break;
+    default:
+      break;
+  }
+  IFWL_Widget::OnProcessMessage(pMessage);
+}
+
+void CFWL_ComboBoxProxy::OnDrawWidget(CFX_Graphics* pGraphics,
+                                      const CFX_Matrix* pMatrix) {
+  m_pComboBox->DrawStretchHandler(pGraphics, pMatrix);
+}
+
+void CFWL_ComboBoxProxy::OnLButtonDown(CFWL_Message* pMessage) {
+  const CFWL_App* pApp = GetOwnerApp();
+  if (!pApp)
+    return;
+
+  CFWL_NoteDriver* pDriver =
+      static_cast<CFWL_NoteDriver*>(pApp->GetNoteDriver());
+  CFX_RectF rtWidget;
+  GetWidgetRect(rtWidget);
+  rtWidget.left = rtWidget.top = 0;
+
+  CFWL_MsgMouse* pMsg = static_cast<CFWL_MsgMouse*>(pMessage);
+  if (rtWidget.Contains(pMsg->m_fx, pMsg->m_fy)) {
+    m_bLButtonDown = true;
+    pDriver->SetGrab(this, true);
+  } else {
+    m_bLButtonDown = false;
+    pDriver->SetGrab(this, false);
+    m_pComboBox->ShowDropList(false);
+  }
+}
+
+void CFWL_ComboBoxProxy::OnLButtonUp(CFWL_Message* pMessage) {
+  m_bLButtonDown = false;
+  const CFWL_App* pApp = GetOwnerApp();
+  if (!pApp)
+    return;
+
+  CFWL_NoteDriver* pDriver =
+      static_cast<CFWL_NoteDriver*>(pApp->GetNoteDriver());
+  pDriver->SetGrab(this, false);
+  if (!m_bLButtonUpSelf) {
+    m_bLButtonUpSelf = true;
+    return;
+  }
+
+  CFWL_MsgMouse* pMsg = static_cast<CFWL_MsgMouse*>(pMessage);
+  CFX_RectF rect;
+  GetWidgetRect(rect);
+  rect.left = rect.top = 0;
+  if (!rect.Contains(pMsg->m_fx, pMsg->m_fy) &&
+      m_pComboBox->IsDropListVisible()) {
+    m_pComboBox->ShowDropList(false);
+  }
+}
+
+void CFWL_ComboBoxProxy::OnFocusChanged(CFWL_Message* pMessage, bool bSet) {
+  if (bSet)
+    return;
+
+  CFWL_MsgKillFocus* pMsg = static_cast<CFWL_MsgKillFocus*>(pMessage);
+  if (!pMsg->m_pSetFocus)
+    m_pComboBox->ShowDropList(false);
+}