Simplify XFA event handling.

xfa/fxfa/app/xfa_ffnotify.cpp

 // Copyright 2014 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/fxfa/app/xfa_ffnotify.h"
 
 #include "xfa/fxfa/app/xfa_ffbarcode.h"
 #include "xfa/fxfa/app/xfa_ffcheckbutton.h"
@@ skipping 70 matching lines @@
   switch (dwEvent) {
     case XFA_WIDGETEVENT_ListItemAdded: {
       if (pWidgetAcc->GetUIType() != XFA_ELEMENT_ChoiceList) {
         return;
       }
       FX_BOOL bStaticNotify = pWidgetAcc->GetDocView()->IsStaticNotify();
       CXFA_FFWidget* pWidget = pWidgetAcc->GetNextWidget(NULL);
       if (!pWidget) {
         if (bStaticNotify) {
           pWidgetAcc->GetDoc()->GetDocProvider()->WidgetEvent(
-              pWidget, pWidgetAcc, XFA_WIDGETEVENT_ListItemAdded, pParam,
-              pAdditional);
+              pWidget, pWidgetAcc, XFA_WIDGETEVENT_ListItemAdded);
         }
         return;
       }
       while (pWidget) {
         if (pWidget->IsLoaded()) {
           if (pWidgetAcc->IsListBox()) {
             static_cast<CXFA_FFListBox*>(pWidget)
                 ->InsertItem((const CFX_WideStringC&)(const FX_WCHAR*)pParam,
                              (int32_t)(uintptr_t)pAdditional2);
           } else {
             static_cast<CXFA_FFComboBox*>(pWidget)
                 ->InsertItem((const CFX_WideStringC&)(const FX_WCHAR*)pParam,
                              (int32_t)(uintptr_t)pAdditional2);
           }
         }
         if (bStaticNotify) {
           pWidgetAcc->GetDoc()->GetDocProvider()->WidgetEvent(
-              pWidget, pWidgetAcc, XFA_WIDGETEVENT_ListItemAdded, pParam,
-              pAdditional);
+              pWidget, pWidgetAcc, XFA_WIDGETEVENT_ListItemAdded);
         }
         pWidget = pWidgetAcc->GetNextWidget(pWidget);
       }
     } break;
     case XFA_WIDGETEVENT_ListItemRemoved: {
       if (pWidgetAcc->GetUIType() != XFA_ELEMENT_ChoiceList) {
         return;
       }
       FX_BOOL bStaticNotify = pWidgetAcc->GetDocView()->IsStaticNotify();
       CXFA_FFWidget* pWidget = pWidgetAcc->GetNextWidget(NULL);
       if (!pWidget) {
         if (bStaticNotify) {
           pWidgetAcc->GetDoc()->GetDocProvider()->WidgetEvent(
-              pWidget, pWidgetAcc, XFA_WIDGETEVENT_ListItemRemoved, pParam,
-              pAdditional);
+              pWidget, pWidgetAcc, XFA_WIDGETEVENT_ListItemRemoved);
         }
         return;
       }
       while (pWidget) {
         if (pWidget->IsLoaded()) {
           if (pWidgetAcc->IsListBox()) {
             static_cast<CXFA_FFListBox*>(pWidget)
                 ->DeleteItem((int32_t)(uintptr_t)pParam);
           } else {
             static_cast<CXFA_FFComboBox*>(pWidget)
                 ->DeleteItem((int32_t)(uintptr_t)pParam);
           }
         }
         if (bStaticNotify) {
           pWidgetAcc->GetDoc()->GetDocProvider()->WidgetEvent(
-              pWidget, pWidgetAcc, XFA_WIDGETEVENT_ListItemRemoved, pParam,
-              pAdditional);
+              pWidget, pWidgetAcc, XFA_WIDGETEVENT_ListItemRemoved);
         }
         pWidget = pWidgetAcc->GetNextWidget(pWidget);
       }
     } break;
   }
 }
 CXFA_LayoutItem* CXFA_FFNotify::OnCreateLayoutItem(CXFA_Node* pNode) {
   CXFA_LayoutProcessor* pLayout = m_pDoc->GetXFADoc()->GetDocLayout();
   CXFA_FFDocView* pDocView = m_pDoc->GetDocView(pLayout);
   XFA_ELEMENT eType = pNode->GetClassID();
@@ skipping 72 matching lines @@
     default:
       pWidget = NULL;
       break;
   }
   if (!pWidget) {
     return NULL;
   }
   pWidget->SetDocView(pDocView);
   return pWidget;
 }
-void CXFA_FFNotify::OnLayoutEvent(CXFA_LayoutProcessor* pLayout,
-                                  CXFA_LayoutItem* pSender,
-                                  XFA_LAYOUTEVENT eEvent,
-                                  void* pParam,
-                                  void* pParam2) {
-  CXFA_FFDocView* pDocView = m_pDoc->GetDocView(pLayout);
-  if (!pDocView || !XFA_GetWidgetFromLayoutItem(pSender)) {
-    return;
-  }
-  switch (eEvent) {
-    case XFA_LAYOUTEVENT_ItemAdded:
-      OnLayoutItemAdd(pDocView, pLayout, pSender, pParam, pParam2);
-      break;
-    case XFA_LAYOUTEVENT_ItemRemoving:
-      OnLayoutItemRemoving(pDocView, pLayout, pSender, pParam, pParam2);
-      break;
-    case XFA_LAYOUTEVENT_RectChanged:
-      OnLayoutItemRectChanged(pDocView, pLayout, pSender, pParam, pParam2);
-      break;
-    case XFA_LAYOUTEVENT_StatusChanged:
-      OnLayoutItemStatustChanged(pDocView, pLayout, pSender, pParam, pParam2);
-      break;
-  }
-}
+
 void CXFA_FFNotify::StartFieldDrawLayout(CXFA_Node* pItem,
                                          FX_FLOAT& fCalcWidth,
                                          FX_FLOAT& fCalcHeight) {
   CXFA_WidgetAcc* pAcc = static_cast<CXFA_WidgetAcc*>(pItem->GetWidgetData());
   if (!pAcc) {
     return;
   }
   pAcc->StartWidgetLayout(fCalcWidth, fCalcHeight);
 }
 FX_BOOL CXFA_FFNotify::FindSplitPos(CXFA_Node* pItem,
@@ skipping 217 matching lines @@
         bUpdateProperty = TRUE;
         break;
       case XFA_ELEMENT_Font:
       case XFA_ELEMENT_Margin:
       case XFA_ELEMENT_Value:
       case XFA_ELEMENT_Items:
         break;
       default:
         break;
     }
-    if (bIsContainerNode && eAttr == XFA_ATTRIBUTE_Access) {
+    if (bIsContainerNode && eAttr == XFA_ATTRIBUTE_Access)
       bUpdateProperty = TRUE;
-      FX_BOOL bNotify = pDocView->IsStaticNotify();
-      if (bNotify) {
-        pWidgetAcc->NotifyEvent(XFA_WIDGETEVENT_AccessChanged, NULL, pParam2,
-                                NULL);
-      }
-    }
+
     if (eAttr == XFA_ATTRIBUTE_Value) {
       pDocView->AddCalculateNodeNotify(pSender);
       if (ePType == XFA_ELEMENT_Value || bIsContainerNode) {
-        FX_BOOL bNotify = pDocView->IsStaticNotify();
         if (bIsContainerNode) {
           pWidgetAcc->UpdateUIDisplay();
           pDocView->AddCalculateWidgetAcc(pWidgetAcc);
           pDocView->AddValidateWidget(pWidgetAcc);
         } else if (pWidgetNode->GetNodeItem(XFA_NODEITEM_Parent)
                        ->GetClassID() == XFA_ELEMENT_ExclGroup) {
           pWidgetAcc->UpdateUIDisplay();
         }
-        if (bNotify) {
-          pWidgetAcc->NotifyEvent(XFA_WIDGETEVENT_PostContentChanged, NULL,
-                                  NULL, NULL);
-        }
         return;
       }
     }
     CXFA_FFWidget* pWidget = NULL;
     while ((pWidget = pWidgetAcc->GetNextWidget(pWidget))) {
       if (!pWidget->IsLoaded()) {
         continue;
       }
       if (bUpdateProperty) {
         pWidget->UpdateWidgetProperty();
@@ skipping 29 matching lines @@
                                    void* pParam2) {
   if (CXFA_FFDocView* pDocView = m_pDoc->GetDocView()) {
     FX_BOOL bLayoutReady =
         !(pDocView->m_bInLayoutStatus) &&
         (pDocView->GetLayoutStatus() == XFA_DOCVIEW_LAYOUTSTATUS_End);
     if (bLayoutReady) {
       m_pDoc->GetDocProvider()->SetChangeMark(m_pDoc);
     }
   }
 }
-void CXFA_FFNotify::OnLayoutItemAdd(CXFA_FFDocView* pDocView,
-                                    CXFA_LayoutProcessor* pLayout,
+void CXFA_FFNotify::OnLayoutItemAdd(CXFA_LayoutProcessor* pLayout,
                                     CXFA_LayoutItem* pSender,
-                                    void* pParam,
-                                    void* pParam2) {
-  CXFA_FFWidget* pWidget = static_cast<CXFA_FFWidget*>(pSender);
-  int32_t iPageIdx = (int32_t)(uintptr_t)pParam;
+                                    int32_t iPageIdx,
+                                    uint32_t dwStatus) {
+  CXFA_FFDocView* pDocView = m_pDoc->GetDocView(pLayout);
+  if (!pDocView)
+    return;
+
+  CXFA_FFWidget* pWidget = XFA_GetWidgetFromLayoutItem(pSender);
+  if (!pWidget)
+    return;
+
   CXFA_FFPageView* pNewPageView = pDocView->GetPageView(iPageIdx);
-  uint32_t dwStatus = (uint32_t)(uintptr_t)pParam2;
   uint32_t dwFilter = XFA_WIDGETSTATUS_Visible | XFA_WIDGETSTATUS_Viewable |
                       XFA_WIDGETSTATUS_Printable;
   pWidget->ModifyStatus(dwStatus, dwFilter);
   CXFA_FFPageView* pPrePageView = pWidget->GetPageView();
   if (pPrePageView != pNewPageView ||
       (dwStatus & (XFA_WIDGETSTATUS_Visible | XFA_WIDGETSTATUS_Viewable)) ==
           (XFA_WIDGETSTATUS_Visible | XFA_WIDGETSTATUS_Viewable)) {
     pWidget->SetPageView(pNewPageView);
     m_pDoc->GetDocProvider()->WidgetEvent(pWidget, pWidget->GetDataAcc(),
-                                          XFA_WIDGETEVENT_PostAdded,
-                                          pNewPageView, pPrePageView);
+                                          XFA_WIDGETEVENT_PostAdded);
   }
   if (pDocView->GetLayoutStatus() != XFA_DOCVIEW_LAYOUTSTATUS_End ||
       !(dwStatus & XFA_WIDGETSTATUS_Visible)) {
     return;
   }
   if (pWidget->IsLoaded()) {
     CFX_RectF rtOld;
     pWidget->GetWidgetRect(rtOld);
     if (rtOld != pWidget->ReCacheWidgetRect())
       pWidget->PerformLayout();
   } else {
     pWidget->LoadWidget();
   }
   pWidget->AddInvalidateRect(nullptr);
 }
-void CXFA_FFNotify::OnLayoutItemRemoving(CXFA_FFDocView* pDocView,
-                                         CXFA_LayoutProcessor* pLayout,
-                                         CXFA_LayoutItem* pSender,
-                                         void* pParam,
-                                         void* pParam2) {
-  CXFA_FFWidget* pWidget = static_cast<CXFA_FFWidget*>(pSender);
+
+void CXFA_FFNotify::OnLayoutItemRemoving(CXFA_LayoutProcessor* pLayout,
+                                         CXFA_LayoutItem* pSender) {
+  CXFA_FFDocView* pDocView = m_pDoc->GetDocView(pLayout);
+  if (!pDocView)
+    return;
+
+  CXFA_FFWidget* pWidget = XFA_GetWidgetFromLayoutItem(pSender);
+  if (!pWidget)
+    return;
+
   pDocView->DeleteLayoutItem(pWidget);
   m_pDoc->GetDocProvider()->WidgetEvent(pWidget, pWidget->GetDataAcc(),
-                                        XFA_WIDGETEVENT_PreRemoved, nullptr,
-                                        pWidget->GetPageView());
+                                        XFA_WIDGETEVENT_PreRemoved);
   pWidget->AddInvalidateRect(nullptr);
 }
-void CXFA_FFNotify::OnLayoutItemRectChanged(CXFA_FFDocView* pDocView,
-                                            CXFA_LayoutProcessor* pLayout,
-                                            CXFA_LayoutItem* pSender,
-                                            void* pParam,
-                                            void* pParam2) {}
-void CXFA_FFNotify::OnLayoutItemStatustChanged(CXFA_FFDocView* pDocView,
-                                               CXFA_LayoutProcessor* pLayout,
-                                               CXFA_LayoutItem* pSender,
-                                               void* pParam,
-                                               void* pParam2) {
-  CXFA_FFWidget* pWidget = static_cast<CXFA_FFWidget*>(pSender);
-  if (!pWidget) {
-    return;
-  }
-  uint32_t dwStatus = (uint32_t)(uintptr_t)pParam;
-  if (dwStatus == 0) {
-    CXFA_LayoutItem* pPreItem = pSender->GetPrev();
-    if (pPreItem) {
-      CXFA_FFWidget* pPreWidget = static_cast<CXFA_FFWidget*>(pPreItem);
-      if (pPreWidget) {
-        dwStatus = pPreWidget->GetStatus();
-      }
-    }
-  }
-  uint32_t dwOldStatus = pWidget->GetStatus();
-  uint32_t dwFilter = XFA_WIDGETSTATUS_Visible | XFA_WIDGETSTATUS_Viewable |
-                      XFA_WIDGETSTATUS_Printable;
-  if ((dwOldStatus & dwFilter) == dwStatus) {
-    return;
-  }
-  pWidget->ModifyStatus(dwStatus, dwFilter);
-}