Split JS methods out of CXFA_Object

This CL moves the javascript code from CXFA_Object to CJX_Object. The
Script_* methods are proxied to CJX_Object.

The ownership of the CJX_ object was removed from CXFA_Node and moved up
to CXFA_Object.

Change-Id: I58d286e6bb0151aa88d4f673bc7729987417bde6
Reviewed-on: https://pdfium-review.googlesource.com/17310
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>

1 files changed, 55 insertions, 0 deletions

diff --git a/fxjs/cjx_object.cpp b/fxjs/cjx_object.cpp
new file mode 100644
index 0000000000..a3ba05f1b4
--- /dev/null
+++ b/fxjs/cjx_object.cpp
@@ -0,0 +1,55 @@
+// Copyright 2017 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 "fxjs/cjx_object.h"
+
+#include "fxjs/cfxjse_value.h"
+#include "xfa/fxfa/parser/cxfa_object.h"
+
+CJX_Object::CJX_Object(CXFA_Object* obj) : object_(obj) {}
+
+CJX_Object::~CJX_Object() {}
+
+void CJX_Object::Script_ObjectClass_ClassName(CFXJSE_Value* pValue,
+                                              bool bSetting,
+                                              XFA_ATTRIBUTE eAttribute) {
+  if (bSetting) {
+    ThrowInvalidPropertyException();
+    return;
+  }
+  pValue->SetString(
+      FX_UTF8Encode(GetXFAObject()->GetClassName()).AsStringView());
+}
+
+void CJX_Object::ThrowInvalidPropertyException() const {
+  ThrowException(L"Invalid property set operation.");
+}
+
+void CJX_Object::ThrowIndexOutOfBoundsException() const {
+  ThrowException(L"Index value is out of bounds.");
+}
+
+void CJX_Object::ThrowParamCountMismatchException(
+    const WideString& method) const {
+  ThrowException(L"Incorrect number of parameters calling method '%.16s'.",
+                 method.c_str());
+}
+
+void CJX_Object::ThrowArgumentMismatchException() const {
+  ThrowException(L"Argument mismatch in property or function argument.");
+}
+
+void CJX_Object::ThrowException(const wchar_t* str, ...) const {
+  WideString wsMessage;
+  va_list arg_ptr;
+
+  va_start(arg_ptr, str);
+  wsMessage.FormatV(str, arg_ptr);
+  va_end(arg_ptr);
+
+  ASSERT(!wsMessage.IsEmpty());
+  FXJSE_ThrowMessage(wsMessage.UTF8Encode().AsStringView());
+}