Add pdf layer code for PDFium XFA module

pdf/pdfium/pdfium_engine.h

Index: pdf/pdfium/pdfium_engine.h
diff --git a/pdf/pdfium/pdfium_engine.h b/pdf/pdfium/pdfium_engine.h
index cb3d0f4030e8f0aa2cd497dfe4bb10f4559f4d57..7220079dca84b36b58288650a491c0214c7b613e 100644
--- a/pdf/pdfium/pdfium_engine.h
+++ b/pdf/pdfium/pdfium_engine.h
@@ -25,6 +25,14 @@
 #include "third_party/pdfium/fpdfsdk/include/fpdfformfill.h"
 #include "third_party/pdfium/fpdfsdk/include/fpdfview.h"
 
+#ifdef _TEST_XFA_
+#if defined(WIN32)
+#define XFA_TESTFILE(filename) "E:/"#filename

[Lei Zhang, 2014/11/05 22:45:09]

Do we need this as part of the CL?

[Bo Xu, 2014/11/05 22:51:46]

This is used in pdfium_engine.cc. But I am not quite sure if the code there does
make sense due to sandbox. Or I can just leave a arbitrary filepath in
pdfium_engine.cc, say, line 950, as a placeholder?

[Lei Zhang, 2014/11/05 22:58:04]

Let's just move this into the .cc file. It doesn't need to be in the header. It
normally wouldn't make sense to have, but because it's behind a test #define,
keep it for now to make debugging/development easier.

[Bo Xu, 2014/11/06 01:26:20]

Done.

+#else
+#define XFA_TESTFILE(filename) "/home/"#filename
+#endif
+#endif
+
 namespace pp {
 class KeyboardInputEvent;
 class MouseInputEvent;
@@ -472,7 +480,27 @@ class PDFiumEngine : public PDFEngine,
                               FPDF_WIDESTRING url);
   static void Form_GotoPage(IPDF_JSPLATFORM* param, int page_number);
   static int Form_Browse(IPDF_JSPLATFORM* param, void* file_path, int length);
-
+#ifdef _TEST_XFA_
+  static void Form_EmailTo(FPDF_FORMFILLINFO* pThis, FPDF_FILEHANDLER* fileHandler, 
+	  FPDF_WIDESTRING to, FPDF_WIDESTRING subject, FPDF_WIDESTRING cc, FPDF_WIDESTRING bcc, FPDF_WIDESTRING message);

[Lei Zhang, 2014/11/05 22:45:09]

Please try to stick with the Google C++ style guide here:
- no tabs
- 2 space indent
- 80 chars per line
-- when a line is too long and continues on the next line, 4 space indent
- Function parameter names are named_like_this.

[Bo Xu, 2014/11/06 01:26:20]

Done.

+  static void Form_DisplayCaret(FPDF_FORMFILLINFO* pThis, FPDF_PAGE page, FPDF_BOOL bVisible, double left, double top, double right, double bottom);
+  //static int Form_GetCurDocumentIndex(FPDF_FORMFILLINFO* pThis);

[Tom Sepez, 2014/11/05 22:44:47]

nit: completely remove the // commented out code.

[Lei Zhang, 2014/11/05 22:45:09]

Can we add the commented out bits in a later CL, or uncomment them and just
provide a dummy implementation until they are ready?

[Bo Xu, 2014/11/06 01:26:20]

Done.

[Bo Xu, 2014/11/06 01:26:20]

We can add them in a later CL when needed. The callback needs to be implemented
in formfill module in pdfsdk, which is not done for some of the XFA action.

+  //static int Form_GetDocumentCount(FPDF_FORMFILLINFO* pThis);
+  static void Form_SetCurrentPage(FPDF_FORMFILLINFO* pThis, FPDF_DOCUMENT document, int iCurPage);
+  static int Form_GetCurrentPageIndex(FPDF_FORMFILLINFO* pThis, FPDF_DOCUMENT document);
+  static void Form_GetPageViewRect(FPDF_FORMFILLINFO* pThis, FPDF_PAGE page, double* left, double* top, double* right, double* bottom);
+  static int Form_GetPlatform(FPDF_FORMFILLINFO* pThis, void* platform, int length);
+  static FPDF_BOOL Form_PopupMenu(FPDF_FORMFILLINFO* pThis, FPDF_PAGE page, FPDF_WIDGET hWidget, int menuFlag, float x, float y);
+  static FPDF_BOOL Form_PostRequestURL(FPDF_FORMFILLINFO* pThis, FPDF_WIDESTRING wsURL, FPDF_WIDESTRING wsData, FPDF_WIDESTRING wsContentType, FPDF_WIDESTRING wsEncode, FPDF_WIDESTRING wsHeader, FPDF_BSTR* respone);
+  static FPDF_BOOL Form_PutRequestURL(FPDF_FORMFILLINFO* pThis, FPDF_WIDESTRING wsURL, FPDF_WIDESTRING wsData, FPDF_WIDESTRING wsEncode);
+  //static FPDF_BOOL Form_ShowFileDialog(FPDF_FORMFILLINFO* pThis, FPDF_WIDESTRING wsTitle, FPDF_WIDESTRING wsFilter, FPDF_BOOL isOpen, FPDF_STRINGHANDLE pathArr);
+  static void Form_UploadTo(FPDF_FORMFILLINFO* pThis, FPDF_FILEHANDLER* fileHandler, int fileFlag, FPDF_WIDESTRING uploadTo);
+  static FPDF_LPFILEHANDLER Form_DownloadFromURL(FPDF_FORMFILLINFO* pThis, FPDF_WIDESTRING URL);
+  //static FPDF_BOOL MyForm_GetFilePath(FPDF_FORMFILLINFO* pThis, FPDF_FILEHANDLER* pFileHandler, void* filePath, int length);
+  static FPDF_FILEHANDLER* Form_OpenFile(FPDF_FORMFILLINFO* pThis, int fileFlag, FPDF_WIDESTRING wsURL, const char* mode);
+  static void Form_GotoURL(FPDF_FORMFILLINFO* pThis, FPDF_DOCUMENT document, FPDF_WIDESTRING wsURL);
+  static int Form_GetLanguage(FPDF_FORMFILLINFO* pThis, void* language, int length);
+#endif // _TEST_XFA_
   // IFSDK_PAUSE callbacks
   static FPDF_BOOL Pause_NeedToPauseNow(IFSDK_PAUSE* param);