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// Copyright 2017 The PDFium Authors
// 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 "fxjs/xfa/cjx_layoutpseudomodel.h"
#include <set>
#include <utility>
#include "core/fxcrt/fx_coordinates.h"
#include "fxjs/fxv8.h"
#include "fxjs/js_resources.h"
#include "fxjs/xfa/cfxjse_class.h"
#include "fxjs/xfa/cfxjse_engine.h"
#include "third_party/base/containers/contains.h"
#include "v8/include/cppgc/allocation.h"
#include "v8/include/v8-object.h"
#include "xfa/fxfa/cxfa_ffnotify.h"
#include "xfa/fxfa/layout/cxfa_contentlayoutitem.h"
#include "xfa/fxfa/layout/cxfa_layoutitem.h"
#include "xfa/fxfa/layout/cxfa_layoutprocessor.h"
#include "xfa/fxfa/layout/cxfa_traversestrategy_layoutitem.h"
#include "xfa/fxfa/layout/cxfa_viewlayoutitem.h"
#include "xfa/fxfa/parser/cscript_layoutpseudomodel.h"
#include "xfa/fxfa/parser/cxfa_arraynodelist.h"
#include "xfa/fxfa/parser/cxfa_document.h"
#include "xfa/fxfa/parser/cxfa_form.h"
#include "xfa/fxfa/parser/cxfa_measurement.h"
#include "xfa/fxfa/parser/cxfa_node.h"
#include "xfa/fxfa/parser/cxfa_nodeiteratortemplate.h"
const CJX_MethodSpec CJX_LayoutPseudoModel::MethodSpecs[] = {
{"absPage", absPage_static},
{"absPageCount", absPageCount_static},
{"absPageCountInBatch", absPageCountInBatch_static},
{"absPageInBatch", absPageInBatch_static},
{"absPageSpan", absPageSpan_static},
{"h", h_static},
{"page", page_static},
{"pageContent", pageContent_static},
{"pageCount", pageCount_static},
{"pageSpan", pageSpan_static},
{"relayout", relayout_static},
{"relayoutPageArea", relayoutPageArea_static},
{"sheet", sheet_static},
{"sheetCount", sheetCount_static},
{"sheetCountInBatch", sheetCountInBatch_static},
{"sheetInBatch", sheetInBatch_static},
{"w", w_static},
{"x", x_static},
{"y", y_static}};
CJX_LayoutPseudoModel::CJX_LayoutPseudoModel(CScript_LayoutPseudoModel* model)
: CJX_Object(model) {
DefineMethods(MethodSpecs);
}
CJX_LayoutPseudoModel::~CJX_LayoutPseudoModel() = default;
bool CJX_LayoutPseudoModel::DynamicTypeIs(TypeTag eType) const {
return eType == static_type__ || ParentType__::DynamicTypeIs(eType);
}
void CJX_LayoutPseudoModel::ready(v8::Isolate* pIsolate,
v8::Local<v8::Value>* pValue,
bool bSetting,
XFA_Attribute eAttribute) {
CXFA_FFNotify* pNotify = GetDocument()->GetNotify();
if (!pNotify)
return;
if (bSetting) {
ThrowException(pIsolate,
WideString::FromASCII("Unable to set ready value."));
return;
}
CXFA_FFDocView::LayoutStatus iStatus = pNotify->GetLayoutStatus();
const bool bReady = iStatus != CXFA_FFDocView::LayoutStatus::kNone &&
iStatus != CXFA_FFDocView::LayoutStatus::kStart;
*pValue = fxv8::NewBooleanHelper(pIsolate, bReady);
}
CJS_Result CJX_LayoutPseudoModel::DoHWXYInternal(
CFXJSE_Engine* runtime,
const std::vector<v8::Local<v8::Value>>& params,
HWXY layoutModel) {
if (params.empty() || params.size() > 3)
return CJS_Result::Failure(JSMessage::kParamError);
CXFA_Node* pNode = ToNode(runtime->ToXFAObject(params[0]));
if (!pNode)
return CJS_Result::Success();
WideString unit = WideString::FromASCII("pt");
if (params.size() >= 2) {
WideString tmp_unit = runtime->ToWideString(params[1]);
if (!tmp_unit.IsEmpty())
unit = std::move(tmp_unit);
}
int32_t iIndex = params.size() >= 3 ? runtime->ToInt32(params[2]) : 0;
auto* pDocLayout = CXFA_LayoutProcessor::FromDocument(GetDocument());
CXFA_ContentLayoutItem* pLayoutItem =
ToContentLayoutItem(pDocLayout->GetLayoutItem(pNode));
if (!pLayoutItem)
return CJS_Result::Success();
while (iIndex > 0 && pLayoutItem) {
pLayoutItem = pLayoutItem->GetNext();
--iIndex;
}
if (!pLayoutItem)
return CJS_Result::Success(runtime->NewNumber(0.0));
CXFA_Measurement measure;
CFX_RectF rtRect = pLayoutItem->GetRelativeRect();
switch (layoutModel) {
case HWXY::kH:
measure.Set(rtRect.height, XFA_Unit::Pt);
break;
case HWXY::kW:
measure.Set(rtRect.width, XFA_Unit::Pt);
break;
case HWXY::kX:
measure.Set(rtRect.left, XFA_Unit::Pt);
break;
case HWXY::kY:
measure.Set(rtRect.top, XFA_Unit::Pt);
break;
}
XFA_Unit eUnit = CXFA_Measurement::GetUnitFromString(unit.AsStringView());
if (eUnit == XFA_Unit::Unknown)
return CJS_Result::Failure(JSMessage::kValueError);
float fValue = measure.ToUnit(eUnit);
return CJS_Result::Success(
runtime->NewNumber(FXSYS_roundf(fValue * 1000) / 1000.0f));
}
CJS_Result CJX_LayoutPseudoModel::h(
CFXJSE_Engine* runtime,
const std::vector<v8::Local<v8::Value>>& params) {
return DoHWXYInternal(runtime, params, HWXY::kH);
}
CJS_Result CJX_LayoutPseudoModel::w(
CFXJSE_Engine* runtime,
const std::vector<v8::Local<v8::Value>>& params) {
return DoHWXYInternal(runtime, params, HWXY::kW);
}
CJS_Result CJX_LayoutPseudoModel::x(
CFXJSE_Engine* runtime,
const std::vector<v8::Local<v8::Value>>& params) {
return DoHWXYInternal(runtime, params, HWXY::kX);
}
CJS_Result CJX_LayoutPseudoModel::y(
CFXJSE_Engine* runtime,
const std::vector<v8::Local<v8::Value>>& params) {
return DoHWXYInternal(runtime, params, HWXY::kY);
}
CJS_Result CJX_LayoutPseudoModel::AllPageCount(CFXJSE_Engine* runtime) {
auto* pDocLayout = CXFA_LayoutProcessor::FromDocument(GetDocument());
return CJS_Result::Success(runtime->NewNumber(pDocLayout->CountPages()));
}
CJS_Result CJX_LayoutPseudoModel::NumberedPageCount(CFXJSE_Engine* runtime) {
auto* pDocLayout = CXFA_LayoutProcessor::FromDocument(GetDocument());
int32_t iPageCount = 0;
int32_t iPageNum = pDocLayout->CountPages();
for (int32_t i = 0; i < iPageNum; i++) {
CXFA_ViewLayoutItem* pLayoutPage = pDocLayout->GetPage(i);
if (!pLayoutPage)
continue;
CXFA_Node* pMasterPage = pLayoutPage->GetMasterPage();
if (pMasterPage->JSObject()->GetInteger(XFA_Attribute::Numbered))
iPageCount++;
}
return CJS_Result::Success(runtime->NewNumber(iPageCount));
}
CJS_Result CJX_LayoutPseudoModel::pageCount(
CFXJSE_Engine* runtime,
const std::vector<v8::Local<v8::Value>>& params) {
return NumberedPageCount(runtime);
}
CJS_Result CJX_LayoutPseudoModel::pageSpan(
CFXJSE_Engine* runtime,
const std::vector<v8::Local<v8::Value>>& params) {
if (params.size() != 1)
return CJS_Result::Failure(JSMessage::kParamError);
CXFA_Node* pNode = ToNode(runtime->ToXFAObject(params[0]));
if (!pNode)
return CJS_Result::Success();
auto* pDocLayout = CXFA_LayoutProcessor::FromDocument(GetDocument());
CXFA_ContentLayoutItem* pLayoutItem =
ToContentLayoutItem(pDocLayout->GetLayoutItem(pNode));
if (!pLayoutItem)
return CJS_Result::Success(runtime->NewNumber(-1));
int32_t iLast = pLayoutItem->GetLast()->GetPage()->GetPageIndex();
int32_t iFirst = pLayoutItem->GetFirst()->GetPage()->GetPageIndex();
int32_t iPageSpan = iLast - iFirst + 1;
return CJS_Result::Success(runtime->NewNumber(iPageSpan));
}
CJS_Result CJX_LayoutPseudoModel::page(
CFXJSE_Engine* runtime,
const std::vector<v8::Local<v8::Value>>& params) {
return PageInternals(runtime, params, false);
}
std::vector<CXFA_Node*> CJX_LayoutPseudoModel::GetObjArray(
CXFA_LayoutProcessor* pDocLayout,
int32_t iPageNo,
const WideString& wsType,
bool bOnPageArea) {
CXFA_ViewLayoutItem* pLayoutPage = pDocLayout->GetPage(iPageNo);
if (!pLayoutPage)
return std::vector<CXFA_Node*>();
std::vector<CXFA_Node*> retArray;
if (wsType.EqualsASCII("pageArea")) {
if (pLayoutPage->GetFormNode())
retArray.push_back(pLayoutPage->GetFormNode());
return retArray;
}
if (wsType.EqualsASCII("contentArea")) {
for (CXFA_LayoutItem* pItem = pLayoutPage->GetFirstChild(); pItem;
pItem = pItem->GetNextSibling()) {
if (pItem->GetFormNode()->GetElementType() == XFA_Element::ContentArea)
retArray.push_back(pItem->GetFormNode());
}
return retArray;
}
std::set<CXFA_Node*> formItems;
if (wsType.IsEmpty()) {
if (pLayoutPage->GetFormNode())
retArray.push_back(pLayoutPage->GetFormNode());
for (CXFA_LayoutItem* pItem = pLayoutPage->GetFirstChild(); pItem;
pItem = pItem->GetNextSibling()) {
if (pItem->GetFormNode()->GetElementType() == XFA_Element::ContentArea) {
retArray.push_back(pItem->GetFormNode());
if (!bOnPageArea) {
CXFA_LayoutItemIterator iterator(pItem->GetFirstChild());
for (CXFA_LayoutItem* pChild = iterator.GetCurrent(); pChild;
pChild = iterator.MoveToNext()) {
CXFA_ContentLayoutItem* pItemChild = pChild->AsContentLayoutItem();
if (!pItemChild)
continue;
XFA_Element eType = pItemChild->GetFormNode()->GetElementType();
if (eType != XFA_Element::Field && eType != XFA_Element::Draw &&
eType != XFA_Element::Subform && eType != XFA_Element::Area) {
continue;
}
if (pdfium::Contains(formItems, pItemChild->GetFormNode()))
continue;
formItems.insert(pItemChild->GetFormNode());
retArray.push_back(pItemChild->GetFormNode());
}
}
} else {
if (bOnPageArea) {
CXFA_LayoutItemIterator iterator(pItem);
for (CXFA_LayoutItem* pChild = iterator.GetCurrent(); pChild;
pChild = iterator.MoveToNext()) {
CXFA_ContentLayoutItem* pItemChild = pChild->AsContentLayoutItem();
if (!pItemChild)
continue;
XFA_Element eType = pItemChild->GetFormNode()->GetElementType();
if (eType != XFA_Element::Field && eType != XFA_Element::Draw &&
eType != XFA_Element::Subform && eType != XFA_Element::Area) {
continue;
}
if (pdfium::Contains(formItems, pItemChild->GetFormNode()))
continue;
formItems.insert(pItemChild->GetFormNode());
retArray.push_back(pItemChild->GetFormNode());
}
}
}
}
return retArray;
}
XFA_Element eType = XFA_Element::Unknown;
if (wsType.EqualsASCII("field"))
eType = XFA_Element::Field;
else if (wsType.EqualsASCII("draw"))
eType = XFA_Element::Draw;
else if (wsType.EqualsASCII("subform"))
eType = XFA_Element::Subform;
else if (wsType.EqualsASCII("area"))
eType = XFA_Element::Area;
if (eType != XFA_Element::Unknown) {
for (CXFA_LayoutItem* pItem = pLayoutPage->GetFirstChild(); pItem;
pItem = pItem->GetNextSibling()) {
if (pItem->GetFormNode()->GetElementType() == XFA_Element::ContentArea) {
if (!bOnPageArea) {
CXFA_LayoutItemIterator iterator(pItem->GetFirstChild());
for (CXFA_LayoutItem* pChild = iterator.GetCurrent(); pChild;
pChild = iterator.MoveToNext()) {
CXFA_ContentLayoutItem* pItemChild = pChild->AsContentLayoutItem();
if (!pItemChild)
continue;
if (pItemChild->GetFormNode()->GetElementType() != eType)
continue;
if (pdfium::Contains(formItems, pItemChild->GetFormNode()))
continue;
formItems.insert(pItemChild->GetFormNode());
retArray.push_back(pItemChild->GetFormNode());
}
}
} else {
if (bOnPageArea) {
CXFA_LayoutItemIterator iterator(pItem);
for (CXFA_LayoutItem* pChild = iterator.GetCurrent(); pChild;
pChild = iterator.MoveToNext()) {
CXFA_ContentLayoutItem* pItemChild = pChild->AsContentLayoutItem();
if (!pItemChild)
continue;
if (pItemChild->GetFormNode()->GetElementType() != eType)
continue;
if (pdfium::Contains(formItems, pItemChild->GetFormNode()))
continue;
formItems.insert(pItemChild->GetFormNode());
retArray.push_back(pItemChild->GetFormNode());
}
}
}
}
}
return retArray;
}
CJS_Result CJX_LayoutPseudoModel::pageContent(
CFXJSE_Engine* runtime,
const std::vector<v8::Local<v8::Value>>& params) {
if (params.empty() || params.size() > 3)
return CJS_Result::Failure(JSMessage::kParamError);
int32_t iIndex = 0;
if (params.size() >= 1)
iIndex = runtime->ToInt32(params[0]);
WideString wsType;
if (params.size() >= 2)
wsType = runtime->ToWideString(params[1]);
bool bOnPageArea = false;
if (params.size() >= 3)
bOnPageArea = runtime->ToBoolean(params[2]);
CXFA_FFNotify* pNotify = GetDocument()->GetNotify();
if (!pNotify)
return CJS_Result::Success();
CXFA_Document* pDoc = GetDocument();
auto* pDocLayout = CXFA_LayoutProcessor::FromDocument(pDoc);
auto* pArrayNodeList = cppgc::MakeGarbageCollected<CXFA_ArrayNodeList>(
pDoc->GetHeap()->GetAllocationHandle(), pDoc);
pDoc->GetNodeOwner()->PersistList(pArrayNodeList);
pArrayNodeList->SetArrayNodeList(
GetObjArray(pDocLayout, iIndex, wsType, bOnPageArea));
return CJS_Result::Success(runtime->NewNormalXFAObject(pArrayNodeList));
}
CJS_Result CJX_LayoutPseudoModel::absPageCount(
CFXJSE_Engine* runtime,
const std::vector<v8::Local<v8::Value>>& params) {
return AllPageCount(runtime);
}
CJS_Result CJX_LayoutPseudoModel::absPageCountInBatch(
CFXJSE_Engine* runtime,
const std::vector<v8::Local<v8::Value>>& params) {
return CJS_Result::Success(runtime->NewNumber(0));
}
CJS_Result CJX_LayoutPseudoModel::sheetCountInBatch(
CFXJSE_Engine* runtime,
const std::vector<v8::Local<v8::Value>>& params) {
return CJS_Result::Success(runtime->NewNumber(0));
}
CJS_Result CJX_LayoutPseudoModel::relayout(
CFXJSE_Engine* runtime,
const std::vector<v8::Local<v8::Value>>& params) {
CXFA_Node* pRootNode = GetDocument()->GetRoot();
auto* pLayoutProcessor = GetDocument()->GetLayoutProcessor();
CXFA_Form* pFormRoot =
pRootNode->GetFirstChildByClass<CXFA_Form>(XFA_Element::Form);
if (pFormRoot) {
if (pFormRoot->GetFirstChild())
pLayoutProcessor->SetHasChangedContainer();
}
pLayoutProcessor->SetForceRelayout();
return CJS_Result::Success();
}
CJS_Result CJX_LayoutPseudoModel::absPageSpan(
CFXJSE_Engine* runtime,
const std::vector<v8::Local<v8::Value>>& params) {
return pageSpan(runtime, params);
}
CJS_Result CJX_LayoutPseudoModel::absPageInBatch(
CFXJSE_Engine* runtime,
const std::vector<v8::Local<v8::Value>>& params) {
if (params.size() != 1)
return CJS_Result::Failure(JSMessage::kParamError);
return CJS_Result::Success(runtime->NewNumber(0));
}
CJS_Result CJX_LayoutPseudoModel::sheetInBatch(
CFXJSE_Engine* runtime,
const std::vector<v8::Local<v8::Value>>& params) {
if (params.size() != 1)
return CJS_Result::Failure(JSMessage::kParamError);
return CJS_Result::Success(runtime->NewNumber(0));
}
CJS_Result CJX_LayoutPseudoModel::sheet(
CFXJSE_Engine* runtime,
const std::vector<v8::Local<v8::Value>>& params) {
return PageInternals(runtime, params, true);
}
CJS_Result CJX_LayoutPseudoModel::relayoutPageArea(
CFXJSE_Engine* runtime,
const std::vector<v8::Local<v8::Value>>& params) {
return CJS_Result::Success();
}
CJS_Result CJX_LayoutPseudoModel::sheetCount(
CFXJSE_Engine* runtime,
const std::vector<v8::Local<v8::Value>>& params) {
return AllPageCount(runtime);
}
CJS_Result CJX_LayoutPseudoModel::absPage(
CFXJSE_Engine* runtime,
const std::vector<v8::Local<v8::Value>>& params) {
return PageInternals(runtime, params, true);
}
CJS_Result CJX_LayoutPseudoModel::PageInternals(
CFXJSE_Engine* runtime,
const std::vector<v8::Local<v8::Value>>& params,
bool bAbsPage) {
if (params.size() != 1)
return CJS_Result::Failure(JSMessage::kParamError);
CXFA_Node* pNode = ToNode(runtime->ToXFAObject(params[0]));
if (!pNode)
return CJS_Result::Success(runtime->NewNumber(0));
auto* pDocLayout = CXFA_LayoutProcessor::FromDocument(GetDocument());
CXFA_ContentLayoutItem* pLayoutItem =
ToContentLayoutItem(pDocLayout->GetLayoutItem(pNode));
if (!pLayoutItem)
return CJS_Result::Success(runtime->NewNumber(-1));
int32_t iPage = pLayoutItem->GetFirst()->GetPage()->GetPageIndex();
return CJS_Result::Success(runtime->NewNumber(bAbsPage ? iPage : iPage + 1));
}