| // 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/fxfa/parser/cxfa_layoutitem.h" |
| |
| #include "fxjs/xfa/cjx_object.h" |
| #include "xfa/fxfa/cxfa_ffnotify.h" |
| #include "xfa/fxfa/parser/cxfa_containerlayoutitem.h" |
| #include "xfa/fxfa/parser/cxfa_contentlayoutitem.h" |
| #include "xfa/fxfa/parser/cxfa_margin.h" |
| #include "xfa/fxfa/parser/cxfa_measurement.h" |
| #include "xfa/fxfa/parser/cxfa_node.h" |
| |
| void XFA_ReleaseLayoutItem(CXFA_LayoutItem* pLayoutItem) { |
| CXFA_LayoutItem* pNode = pLayoutItem->m_pFirstChild; |
| CXFA_Document* pDocument = pLayoutItem->GetFormNode()->GetDocument(); |
| CXFA_FFNotify* pNotify = pDocument->GetNotify(); |
| CXFA_LayoutProcessor* pDocLayout = pDocument->GetLayoutProcessor(); |
| while (pNode) { |
| CXFA_LayoutItem* pNext = pNode->m_pNextSibling; |
| pNode->m_pParent = nullptr; |
| pNotify->OnLayoutItemRemoving(pDocLayout, pNode); |
| XFA_ReleaseLayoutItem(pNode); |
| pNode = pNext; |
| } |
| pNotify->OnLayoutItemRemoving(pDocLayout, pLayoutItem); |
| if (pLayoutItem->GetFormNode()->GetElementType() == XFA_Element::PageArea) { |
| pNotify->OnPageEvent(ToContainerLayoutItem(pLayoutItem), |
| XFA_PAGEVIEWEVENT_PostRemoved); |
| } |
| delete pLayoutItem; |
| } |
| |
| CXFA_LayoutItem::CXFA_LayoutItem(CXFA_Node* pNode, ItemType type) |
| : m_ItemType(type), m_pFormNode(pNode) {} |
| |
| CXFA_LayoutItem::~CXFA_LayoutItem() = default; |
| |
| CXFA_ContainerLayoutItem* CXFA_LayoutItem::AsContainerLayoutItem() { |
| return IsContainerLayoutItem() ? static_cast<CXFA_ContainerLayoutItem*>(this) |
| : nullptr; |
| } |
| |
| CXFA_ContentLayoutItem* CXFA_LayoutItem::AsContentLayoutItem() { |
| return IsContentLayoutItem() ? static_cast<CXFA_ContentLayoutItem*>(this) |
| : nullptr; |
| } |
| |
| CXFA_ContainerLayoutItem* CXFA_LayoutItem::GetPage() const { |
| for (CXFA_LayoutItem* pCurNode = const_cast<CXFA_LayoutItem*>(this); pCurNode; |
| pCurNode = pCurNode->m_pParent) { |
| if (pCurNode->m_pFormNode->GetElementType() == XFA_Element::PageArea) |
| return pCurNode->AsContainerLayoutItem(); |
| } |
| return nullptr; |
| } |
| void CXFA_LayoutItem::AddChild(CXFA_LayoutItem* pChildItem) { |
| if (pChildItem->m_pParent) |
| pChildItem->m_pParent->RemoveChild(pChildItem); |
| |
| pChildItem->m_pParent = this; |
| if (!m_pFirstChild) { |
| m_pFirstChild = pChildItem; |
| return; |
| } |
| |
| CXFA_LayoutItem* pExistingChildItem = m_pFirstChild; |
| while (pExistingChildItem->m_pNextSibling) |
| pExistingChildItem = pExistingChildItem->m_pNextSibling; |
| |
| pExistingChildItem->m_pNextSibling = pChildItem; |
| } |
| |
| void CXFA_LayoutItem::AddHeadChild(CXFA_LayoutItem* pChildItem) { |
| if (pChildItem->m_pParent) |
| pChildItem->m_pParent->RemoveChild(pChildItem); |
| |
| pChildItem->m_pParent = this; |
| if (!m_pFirstChild) { |
| m_pFirstChild = pChildItem; |
| return; |
| } |
| |
| CXFA_LayoutItem* pExistingChildItem = m_pFirstChild; |
| m_pFirstChild = pChildItem; |
| m_pFirstChild->m_pNextSibling = pExistingChildItem; |
| } |
| |
| void CXFA_LayoutItem::InsertChild(CXFA_LayoutItem* pBeforeItem, |
| CXFA_LayoutItem* pChildItem) { |
| if (pBeforeItem->m_pParent != this) |
| return; |
| if (pChildItem->m_pParent) |
| pChildItem->m_pParent = nullptr; |
| |
| pChildItem->m_pParent = this; |
| |
| CXFA_LayoutItem* pExistingChildItem = pBeforeItem->m_pNextSibling; |
| pBeforeItem->m_pNextSibling = pChildItem; |
| pChildItem->m_pNextSibling = pExistingChildItem; |
| } |
| |
| void CXFA_LayoutItem::RemoveChild(CXFA_LayoutItem* pChildItem) { |
| if (pChildItem->m_pParent != this) |
| return; |
| |
| if (m_pFirstChild == pChildItem) { |
| m_pFirstChild = pChildItem->m_pNextSibling; |
| } else { |
| CXFA_LayoutItem* pExistingChildItem = m_pFirstChild; |
| while (pExistingChildItem && |
| pExistingChildItem->m_pNextSibling != pChildItem) { |
| pExistingChildItem = pExistingChildItem->m_pNextSibling; |
| } |
| if (pExistingChildItem) |
| pExistingChildItem->m_pNextSibling = pChildItem->m_pNextSibling; |
| } |
| pChildItem->m_pNextSibling = nullptr; |
| pChildItem->m_pParent = nullptr; |
| } |