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, 32 insertions, 0 deletions

diff --git a/fpdfsdk/formfiller/cffl_textobject.h b/fpdfsdk/formfiller/cffl_textobject.h
new file mode 100644
index 0000000000..fcb3c1b971
--- /dev/null
+++ b/fpdfsdk/formfiller/cffl_textobject.h
@@ -0,0 +1,32 @@
+// 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
+
+#ifndef FPDFSDK_FORMFILLER_CFFL_TEXTOBJECT_H_
+#define FPDFSDK_FORMFILLER_CFFL_TEXTOBJECT_H_
+
+#include <memory>
+
+#include "fpdfsdk/formfiller/cffl_formfiller.h"
+
+// Class to implement common functionality for CFFL_FormFiller sub-classes with
+// text fields.
+class CFFL_TextObject : public CFFL_FormFiller {
+ public:
+  // CFFL_FormFiller:
+  CPWL_Wnd* ResetPDFWindow(CPDFSDK_PageView* pPageView,
+                           bool bRestoreValue) override;
+
+ protected:
+  CFFL_TextObject(CPDFSDK_FormFillEnvironment* pApp, CPDFSDK_Widget* pWidget);
+  ~CFFL_TextObject() override;
+
+  CBA_FontMap* MaybeCreateFontMap();
+
+ private:
+  std::unique_ptr<CBA_FontMap> m_pFontMap;
+};
+
+#endif  // FPDFSDK_FORMFILLER_CFFL_TEXTOBJECT_H_