PDFiumEngine::~PDFiumEngine - Unload all pages_ before destroying any of them.

pdf/pdfium/pdfium_engine.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "pdf/pdfium/pdfium_engine.h"
 
 #include <math.h>
 
 #include "base/json/json_writer.h"
 #include "base/logging.h"
@@ skipping 580 matching lines @@
   IPDF_JSPLATFORM::Doc_submitForm = Form_SubmitForm;
   IPDF_JSPLATFORM::Doc_gotoPage = Form_GotoPage;
   IPDF_JSPLATFORM::Field_browse = Form_Browse;
 
   IFSDK_PAUSE::version = 1;
   IFSDK_PAUSE::user = NULL;
   IFSDK_PAUSE::NeedToPauseNow = Pause_NeedToPauseNow;
 }
 
 PDFiumEngine::~PDFiumEngine() {
-  STLDeleteElements(&pages_);
+  for (size_t i = 0; i < pages_.size(); ++i)
+    pages_[i]->Unload();
+
   if (doc_) {
     if (form_) {
       FORM_DoDocumentAAction(form_, FPDFDOC_AACTION_WC);
       FPDFDOC_ExitFormFillEnviroument(form_);
     }
     FPDF_CloseDocument(doc_);
   }
 
   if (fpdf_availability_)
     FPDFAvail_Destroy(fpdf_availability_);
+
+  STLDeleteElements(&pages_);
 }
 
 int PDFiumEngine::GetBlock(void* param, unsigned long position,
                            unsigned char* buffer, unsigned long size) {
   DocumentLoader* loader = static_cast<DocumentLoader*>(param);
   return loader->GetBlock(position, size, buffer);
 }
 
 bool PDFiumEngine::IsDataAvail(FX_FILEAVAIL* param,
                                size_t offset, size_t size) {
@@ skipping 2800 matching lines @@
     double* height) {
   FPDF_DOCUMENT doc = FPDF_LoadMemDocument(pdf_buffer, pdf_buffer_size, NULL);
   if (!doc)
     return false;
   bool success = FPDF_GetPageSizeByIndex(doc, page_number, width, height) != 0;
   FPDF_CloseDocument(doc);
   return success;
 }
 
 }  // namespace chrome_pdf