Merge delegates into IFWL_* classes.

This Cl removes ownership of the delgates from IFWL_Widget and puts it in the
hand of the creating classes. In doing so, merge the delegates back into the
IFWL_* classes to simplify logic.

Review-Url: https://codereview.chromium.org/2467993003

1 files changed, 118 insertions, 0 deletions

diff --git a/xfa/fwl/core/ifwl_comboboxproxy.cpp b/xfa/fwl/core/ifwl_comboboxproxy.cpp
new file mode 100644
index 0000000000..a0afcd1d72
--- /dev/null
+++ b/xfa/fwl/core/ifwl_comboboxproxy.cpp
@@ -0,0 +1,118 @@
+// 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_comboboxproxy.h"
+
+#include "xfa/fwl/core/fwl_noteimp.h"
+#include "xfa/fwl/core/ifwl_app.h"
+#include "xfa/fwl/core/ifwl_combobox.h"
+
+IFWL_ComboBoxProxy::IFWL_ComboBoxProxy(
+    IFWL_ComboBox* pComboBox,
+    const IFWL_App* app,
+    const CFWL_WidgetImpProperties& properties,
+    IFWL_Widget* pOuter)
+    : IFWL_FormProxy(app, properties, pOuter),
+      m_bLButtonDown(FALSE),
+      m_bLButtonUpSelf(FALSE),
+      m_pComboBox(pComboBox) {}
+
+IFWL_ComboBoxProxy::~IFWL_ComboBoxProxy() {}
+
+void IFWL_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;
+        case FWL_MouseCommand::Move:
+          break;
+        default:
+          break;
+      }
+      break;
+    }
+    case CFWL_MessageType::Deactivate:
+      OnDeactive(static_cast<CFWL_MsgDeactivate*>(pMessage));
+      break;
+    case CFWL_MessageType::KillFocus:
+      OnFocusChanged(static_cast<CFWL_MsgKillFocus*>(pMessage), FALSE);
+      break;
+    case CFWL_MessageType::SetFocus:
+      OnFocusChanged(static_cast<CFWL_MsgKillFocus*>(pMessage), TRUE);
+      break;
+    default:
+      break;
+  }
+  IFWL_Widget::OnProcessMessage(pMessage);
+}
+
+void IFWL_ComboBoxProxy::OnDrawWidget(CFX_Graphics* pGraphics,
+                                      const CFX_Matrix* pMatrix) {
+  m_pComboBox->DrawStretchHandler(pGraphics, pMatrix);
+}
+
+void IFWL_ComboBoxProxy::OnLButtonDown(CFWL_MsgMouse* pMsg) {
+  const IFWL_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;
+  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 IFWL_ComboBoxProxy::OnLButtonUp(CFWL_MsgMouse* pMsg) {
+  m_bLButtonDown = FALSE;
+  const IFWL_App* pApp = GetOwnerApp();
+  if (!pApp)
+    return;
+
+  CFWL_NoteDriver* pDriver =
+      static_cast<CFWL_NoteDriver*>(pApp->GetNoteDriver());
+  pDriver->SetGrab(this, FALSE);
+  if (m_bLButtonUpSelf) {
+    CFX_RectF rect;
+    GetWidgetRect(rect);
+    rect.left = rect.top = 0;
+    if (!rect.Contains(pMsg->m_fx, pMsg->m_fy) &&
+        m_pComboBox->IsDropListShowed()) {
+      m_pComboBox->ShowDropList(FALSE);
+    }
+  } else {
+    m_bLButtonUpSelf = TRUE;
+  }
+}
+
+void IFWL_ComboBoxProxy::OnDeactive(CFWL_MsgDeactivate* pMsg) {
+  m_pComboBox->ShowDropList(FALSE);
+}
+
+void IFWL_ComboBoxProxy::OnFocusChanged(CFWL_MsgKillFocus* pMsg, FX_BOOL bSet) {
+  if (bSet)
+    return;
+
+  if (!pMsg->m_pSetFocus)
+    m_pComboBox->ShowDropList(FALSE);
+}