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// 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(static_cast<CXFA_ContainerLayoutItem*>(pLayoutItem),
XFA_PAGEVIEWEVENT_PostRemoved);
}
delete pLayoutItem;
}
CXFA_LayoutItem::CXFA_LayoutItem(CXFA_Node* pNode, bool bIsContentLayoutItem)
: m_bIsContentLayoutItem(bIsContentLayoutItem), 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 static_cast<CXFA_ContainerLayoutItem*>(pCurNode);
}
return nullptr;
}
CFX_RectF CXFA_LayoutItem::GetRect(bool bRelative) const {
ASSERT(m_bIsContentLayoutItem);
auto* pThis = static_cast<const CXFA_ContentLayoutItem*>(this);
CFX_PointF sPos = pThis->m_sPos;
CFX_SizeF sSize = pThis->m_sSize;
if (bRelative)
return CFX_RectF(sPos, sSize);
for (CXFA_LayoutItem* pLayoutItem = pThis->m_pParent; pLayoutItem;
pLayoutItem = pLayoutItem->m_pParent) {
if (CXFA_ContentLayoutItem* pContent = pLayoutItem->AsContentLayoutItem()) {
sPos += pContent->m_sPos;
CXFA_Margin* pMarginNode =
pLayoutItem->m_pFormNode->GetFirstChildByClass<CXFA_Margin>(
XFA_Element::Margin);
if (pMarginNode) {
sPos += CFX_PointF(pMarginNode->JSObject()
->GetMeasure(XFA_Attribute::LeftInset)
.ToUnit(XFA_Unit::Pt),
pMarginNode->JSObject()
->GetMeasure(XFA_Attribute::TopInset)
.ToUnit(XFA_Unit::Pt));
}
continue;
}
if (pLayoutItem->m_pFormNode->GetElementType() ==
XFA_Element::ContentArea) {
sPos += CFX_PointF(pLayoutItem->m_pFormNode->JSObject()
->GetMeasure(XFA_Attribute::X)
.ToUnit(XFA_Unit::Pt),
pLayoutItem->m_pFormNode->JSObject()
->GetMeasure(XFA_Attribute::Y)
.ToUnit(XFA_Unit::Pt));
break;
}
if (pLayoutItem->m_pFormNode->GetElementType() == XFA_Element::PageArea)
break;
}
return CFX_RectF(sPos, sSize);
}
CXFA_LayoutItem* CXFA_LayoutItem::GetFirst() {
ASSERT(m_bIsContentLayoutItem);
CXFA_ContentLayoutItem* pCurNode = static_cast<CXFA_ContentLayoutItem*>(this);
while (pCurNode->m_pPrev)
pCurNode = pCurNode->m_pPrev;
return pCurNode;
}
const CXFA_LayoutItem* CXFA_LayoutItem::GetLast() const {
ASSERT(m_bIsContentLayoutItem);
const CXFA_ContentLayoutItem* pCurNode =
static_cast<const CXFA_ContentLayoutItem*>(this);
while (pCurNode->m_pNext)
pCurNode = pCurNode->m_pNext;
return pCurNode;
}
CXFA_LayoutItem* CXFA_LayoutItem::GetPrev() const {
ASSERT(m_bIsContentLayoutItem);
return static_cast<const CXFA_ContentLayoutItem*>(this)->m_pPrev;
}
CXFA_LayoutItem* CXFA_LayoutItem::GetNext() const {
ASSERT(m_bIsContentLayoutItem);
return static_cast<const CXFA_ContentLayoutItem*>(this)->m_pNext;
}
int32_t CXFA_LayoutItem::GetIndex() const {
ASSERT(m_bIsContentLayoutItem);
int32_t iIndex = 0;
const CXFA_ContentLayoutItem* pCurNode =
static_cast<const CXFA_ContentLayoutItem*>(this);
while (pCurNode->m_pPrev) {
pCurNode = pCurNode->m_pPrev;
++iIndex;
}
return iIndex;
}
int32_t CXFA_LayoutItem::GetCount() const {
ASSERT(m_bIsContentLayoutItem);
int32_t iCount = GetIndex() + 1;
const CXFA_ContentLayoutItem* pCurNode =
static_cast<const CXFA_ContentLayoutItem*>(this);
while (pCurNode->m_pNext) {
pCurNode = pCurNode->m_pNext;
iCount++;
}
return iCount;
}
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;
}
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