Add CFFL_TextField class.chromium/3175

This class implements common code used by several CFFL_FormFiller
sub-classes. Make those sub-classes inherit from CFFL_TextField, instead
of inheriting from CFFL_FormFiller directly and then implementing the
same functionality multiple times.

Change-Id: Iad8a735b6d6e18e89d617636b753805d3f77a286
Reviewed-on: https://pdfium-review.googlesource.com/9850
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>

1 files changed, 35 insertions, 0 deletions

diff --git a/fpdfsdk/formfiller/cffl_textobject.cpp b/fpdfsdk/formfiller/cffl_textobject.cpp
new file mode 100644
index 0000000000..d84557eb88
--- /dev/null
+++ b/fpdfsdk/formfiller/cffl_textobject.cpp
@@ -0,0 +1,35 @@
+// 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 "fpdfsdk/formfiller/cffl_textobject.h"
+
+CPWL_Wnd* CFFL_TextObject::ResetPDFWindow(CPDFSDK_PageView* pPageView,
+                                          bool bRestoreValue) {
+  if (bRestoreValue)
+    SaveState(pPageView);
+
+  DestroyPDFWindow(pPageView);
+  if (bRestoreValue)
+    RestoreState(pPageView);
+
+  CPWL_Wnd::ObservedPtr pRet(GetPDFWindow(pPageView, !bRestoreValue));
+  m_pWidget->UpdateField();  // May invoke JS, invalidating |pRet|.
+  return pRet.Get();
+}
+
+CFFL_TextObject::CFFL_TextObject(CPDFSDK_FormFillEnvironment* pApp,
+                                 CPDFSDK_Widget* pWidget)
+    : CFFL_FormFiller(pApp, pWidget) {}
+
+CFFL_TextObject::~CFFL_TextObject() {}
+
+CBA_FontMap* CFFL_TextObject::MaybeCreateFontMap() {
+  if (!m_pFontMap) {
+    m_pFontMap =
+        pdfium::MakeUnique<CBA_FontMap>(m_pWidget.Get(), GetSystemHandler());
+  }
+  return m_pFontMap.get();
+}