[xfa] Allow accessing the event changed parameter from JS.

This CL updates the CFXJSE_Engine code to access the defined properties
of a class if we fail to find the property in any other way. This fixes
up an issue where we were unable to read the 'change' property of the
CJX_EventPseudoModel because we could not find the 'change' property.

Bug: 1066
Change-Id: I4ad205bc527beeca1c3e24a36cdde0c21287d9fb
Reviewed-on: https://pdfium-review.googlesource.com/32930
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: Ryan Harrison <rharrison@chromium.org>

1 files changed, 31 insertions, 0 deletions

diff --git a/fxjs/cfxjse_formcalc_context_embeddertest.cpp b/fxjs/cfxjse_formcalc_context_embeddertest.cpp
index a7efc14d20..a32f988d06 100644
--- a/fxjs/cfxjse_formcalc_context_embeddertest.cpp
+++ b/fxjs/cfxjse_formcalc_context_embeddertest.cpp
@@ -2,8 +2,10 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "fxjs/cfxjse_engine.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/xfa_js_embedder_test.h"
+#include "xfa/fxfa/cxfa_eventparam.h"
 
 class CFXJSE_FormCalcContextEmbedderTest : public XFAJSEmbedderTest {};
 
@@ -1455,3 +1457,32 @@ TEST_F(CFXJSE_FormCalcContextEmbedderTest, MethodCall) {
   EXPECT_TRUE(value->IsString());
   EXPECT_STREQ("12.7mm", value->ToString().c_str());
 }
+
+TEST_F(CFXJSE_FormCalcContextEmbedderTest, GetXFAEventChange) {
+  ASSERT_TRUE(OpenDocument("simple_xfa.pdf"));
+
+  CXFA_EventParam params;
+  params.m_wsChange = L"changed";
+
+  CFXJSE_Engine* context = GetScriptContext();
+  context->SetEventParam(params);
+
+  const char test[] = {"xfa.event.change"};
+  EXPECT_TRUE(Execute(test));
+
+  CFXJSE_Value* value = GetValue();
+  EXPECT_TRUE(value->IsString());
+  EXPECT_STREQ("changed", value->ToString().c_str());
+}
+
+TEST_F(CFXJSE_FormCalcContextEmbedderTest, SetXFAEventChange) {
+  ASSERT_TRUE(OpenDocument("simple_xfa.pdf"));
+
+  CXFA_EventParam params;
+  CFXJSE_Engine* context = GetScriptContext();
+  context->SetEventParam(params);
+
+  const char test[] = {"xfa.event.change = \"changed\""};
+  EXPECT_TRUE(Execute(test));
+  EXPECT_EQ(L"changed", context->GetEventParam()->m_wsChange);
+}