88 lines
3.0 KiB
C++
88 lines
3.0 KiB
C++
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// Copyright 2016 The PDFium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#include "xfa/fxfa/layout/cxfa_layoutitem.h"
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#include "fxjs/xfa/cjx_object.h"
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#include "xfa/fxfa/cxfa_ffnotify.h"
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#include "xfa/fxfa/layout/cxfa_contentlayoutitem.h"
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#include "xfa/fxfa/layout/cxfa_layoutprocessor.h"
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#include "xfa/fxfa/layout/cxfa_viewlayoutitem.h"
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#include "xfa/fxfa/parser/cxfa_margin.h"
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#include "xfa/fxfa/parser/cxfa_measurement.h"
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#include "xfa/fxfa/parser/cxfa_node.h"
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void XFA_ReleaseLayoutItem(CXFA_LayoutItem* pLayoutItem) {
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CXFA_LayoutItem* pNode = pLayoutItem->GetFirstChild();
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while (pNode) {
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CXFA_LayoutItem* pNext = pNode->GetNextSibling();
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XFA_ReleaseLayoutItem(pNode);
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pNode = pNext;
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}
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CXFA_Document* pDocument = pLayoutItem->GetFormNode()->GetDocument();
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CXFA_FFNotify* pNotify = pDocument->GetNotify();
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auto* pDocLayout = CXFA_LayoutProcessor::FromDocument(pDocument);
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pNotify->OnLayoutItemRemoving(pDocLayout, pLayoutItem);
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if (pLayoutItem->GetFormNode()->GetElementType() == XFA_Element::PageArea) {
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pNotify->OnPageViewEvent(ToViewLayoutItem(pLayoutItem),
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CXFA_FFDoc::PageViewEvent::kPostRemoved);
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}
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pLayoutItem->RemoveSelfIfParented();
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}
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CXFA_LayoutItem::CXFA_LayoutItem(CXFA_Node* pNode, ItemType type)
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: m_ItemType(type), m_pFormNode(pNode) {}
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CXFA_LayoutItem::~CXFA_LayoutItem() = default;
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void CXFA_LayoutItem::PreFinalize() {
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if (!m_pFormNode)
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return;
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auto* pJSObj = m_pFormNode->JSObject();
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if (pJSObj && pJSObj->GetLayoutItem() == this)
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pJSObj->SetLayoutItem(nullptr);
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}
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void CXFA_LayoutItem::Trace(cppgc::Visitor* visitor) const {
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GCedTreeNode<CXFA_LayoutItem>::Trace(visitor);
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visitor->Trace(m_pFormNode);
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}
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CXFA_ViewLayoutItem* CXFA_LayoutItem::AsViewLayoutItem() {
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return IsViewLayoutItem() ? static_cast<CXFA_ViewLayoutItem*>(this) : nullptr;
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}
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const CXFA_ViewLayoutItem* CXFA_LayoutItem::AsViewLayoutItem() const {
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return IsViewLayoutItem() ? static_cast<const CXFA_ViewLayoutItem*>(this)
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: nullptr;
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}
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CXFA_ContentLayoutItem* CXFA_LayoutItem::AsContentLayoutItem() {
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return IsContentLayoutItem() ? static_cast<CXFA_ContentLayoutItem*>(this)
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: nullptr;
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}
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const CXFA_ContentLayoutItem* CXFA_LayoutItem::AsContentLayoutItem() const {
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return IsContentLayoutItem()
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? static_cast<const CXFA_ContentLayoutItem*>(this)
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: nullptr;
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}
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const CXFA_ViewLayoutItem* CXFA_LayoutItem::GetPage() const {
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for (CXFA_LayoutItem* pCurNode = const_cast<CXFA_LayoutItem*>(this); pCurNode;
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pCurNode = pCurNode->GetParent()) {
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if (pCurNode->m_pFormNode->GetElementType() == XFA_Element::PageArea)
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return pCurNode->AsViewLayoutItem();
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}
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return nullptr;
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}
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void CXFA_LayoutItem::SetFormNode(CXFA_Node* pNode) {
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// Not in header, assignment requires complete type, not just forward decl.
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m_pFormNode = pNode;
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}
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