Add support to Document::gotoNamedDest method.

fpdfsdk/javascript/Document.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 "fpdfsdk/javascript/Document.h"
 
 #include <vector>
 
 #include "core/fpdfapi/fpdf_font/include/cpdf_font.h"
 #include "core/fpdfapi/fpdf_page/include/cpdf_page.h"
+#include "core/fpdfapi/fpdf_parser/include/cpdf_array.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_document.h"
 #include "core/fpdfapi/fpdf_parser/include/fpdf_parser_decode.h"
 #include "core/fpdfdoc/include/cpdf_interform.h"
+#include "core/fpdfdoc/include/cpdf_nametree.h"
 #include "fpdfsdk/include/fsdk_mgr.h"
 #include "fpdfsdk/javascript/Field.h"
 #include "fpdfsdk/javascript/Icon.h"
 #include "fpdfsdk/javascript/JS_Define.h"
 #include "fpdfsdk/javascript/JS_EventHandler.h"
 #include "fpdfsdk/javascript/JS_Object.h"
 #include "fpdfsdk/javascript/JS_Value.h"
 #include "fpdfsdk/javascript/app.h"
 #include "fpdfsdk/javascript/cjs_context.h"
 #include "fpdfsdk/javascript/cjs_runtime.h"
@@ skipping 91 matching lines @@
 JS_STATIC_METHOD_ENTRY(getIcon)
 JS_STATIC_METHOD_ENTRY(getLinks)
 JS_STATIC_METHOD_ENTRY(getNthFieldName)
 JS_STATIC_METHOD_ENTRY(getOCGs)
 JS_STATIC_METHOD_ENTRY(getPageBox)
 JS_STATIC_METHOD_ENTRY(getPageNthWord)
 JS_STATIC_METHOD_ENTRY(getPageNthWordQuads)
 JS_STATIC_METHOD_ENTRY(getPageNumWords)
 JS_STATIC_METHOD_ENTRY(getPrintParams)
 JS_STATIC_METHOD_ENTRY(getURL)
+JS_STATIC_METHOD_ENTRY(gotoNamedDest)
 JS_STATIC_METHOD_ENTRY(importAnFDF)
 JS_STATIC_METHOD_ENTRY(importAnXFDF)
 JS_STATIC_METHOD_ENTRY(importTextData)
 JS_STATIC_METHOD_ENTRY(insertPages)
 JS_STATIC_METHOD_ENTRY(mailForm)
 JS_STATIC_METHOD_ENTRY(print)
 JS_STATIC_METHOD_ENTRY(removeField)
 JS_STATIC_METHOD_ENTRY(replacePages)
 JS_STATIC_METHOD_ENTRY(resetForm)
 JS_STATIC_METHOD_ENTRY(removeIcon)
@@ skipping 1322 matching lines @@
 }
 
 FX_BOOL Document::getURL(IJS_Context* cc,
                          const std::vector<CJS_Value>& params,
                          CJS_Value& vRet,
                          CFX_WideString& sError) {
   // Unsafe, not supported.
   return TRUE;
 }
 
+FX_BOOL Document::gotoNamedDest(IJS_Context* cc,
+                                const std::vector<CJS_Value>& params,
+                                CJS_Value& vRet,
+                                CFX_WideString& sError) {
+  CJS_Context* pContext = (CJS_Context*)cc;
+  if (params.size() != 1) {
+    sError = JSGetStringFromID(pContext, IDS_STRING_JSPARAMERROR);
+    return FALSE;
+  }
+
+  CPDF_Document* pDocument = m_pDocument->GetPDFDocument();
+  if (!pDocument)
+    return FALSE;
+
+  CFX_WideString wideName = params[0].ToCFXWideString();
+  CFX_ByteString utf16Name = wideName.UTF8Encode();

[dsinclair, 2016/08/08 20:05:29]

What about CFX_ByteString utf16Name = params[0].ToString(); ?

+
+  CPDF_NameTree name_tree(pDocument, "Dests");

[dsinclair, 2016/08/08 20:05:29]

nit: name_tree should probably be nameTree

+  CPDF_Array* destArray = name_tree.LookupNamedDest(pDocument, utf16Name);
+  if (!destArray)
+    return FALSE;
+
+  CPDF_Dest dest(destArray);
+
+  int nPageIndex = dest.GetPageIndex(pDocument);
+  int nFitType = dest.GetZoomMode();
+
+  const CPDF_Array* pMyArray = ToArray(dest.GetObject());
+  float* pPosAry = nullptr;

[dsinclair, 2016/08/08 20:05:29]

Can float* pPosAry be a std::unique_ptr and then just use .get() below?

+  int sizeOfAry = 0;
+  if (pMyArray) {
+    pPosAry = new float[pMyArray->GetCount()];
+    int j = 0;
+    for (size_t i = 2; i < pMyArray->GetCount(); i++) {
+      pPosAry[j++] = pMyArray->GetFloatAt(i);
+    }

[dsinclair, 2016/08/08 20:05:29]

nit: no {}'s

+    sizeOfAry = j;
+  }
+
+  CPDFDoc_Environment* pApp = m_pDocument->GetEnv();
+  pApp->FFI_DoGoToAction(nPageIndex, nFitType, pPosAry, sizeOfAry);

[dsinclair, 2016/08/08 20:05:29]

No need to store nFitType, just use dest.GetZoomMode() here. Same with
nPageIndex.

+  delete[] pPosAry;

[dsinclair, 2016/08/08 20:05:29]

delete won't be needed after moving to a unique_ptr

+
+  return TRUE;
+}
+
 void Document::AddDelayData(CJS_DelayData* pData) {
   m_DelayData.push_back(std::unique_ptr<CJS_DelayData>(pData));
 }
 
 void Document::DoFieldDelay(const CFX_WideString& sFieldName,
                             int nControlIndex) {
   std::vector<std::unique_ptr<CJS_DelayData>> DelayDataForFieldAndControlIndex;
   auto iter = m_DelayData.begin();
   while (iter != m_DelayData.end()) {
     auto old = iter++;
     if ((*old)->sFieldName == sFieldName &&
         (*old)->nControlIndex == nControlIndex) {
       DelayDataForFieldAndControlIndex.push_back(std::move(*old));
       m_DelayData.erase(old);
     }
   }
 
   for (const auto& pData : DelayDataForFieldAndControlIndex)
     Field::DoDelay(m_pDocument, pData.get());
 }
 
 CJS_Document* Document::GetCJSDoc() const {
   return static_cast<CJS_Document*>(m_pJSObject);
 }