Create CPWL_AppStream.

This CL creates a CPWL_AppStream and consolidates app stream generation
code from CPDFSDK_Widget, CPDFSDK_BAAnnot and CPWL_Utils. The remaining
app stream code from CPWL_Utils will be cleaned up in a future CL.

Change-Id: I20cfdec09a351bd509241d2c667a182fba84b0c1
Reviewed-on: https://pdfium-review.googlesource.com/8310
Commit-Queue: dsinclair <dsinclair@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>

1 files changed, 43 insertions, 0 deletions

diff --git a/fpdfsdk/pdfwindow/cpwl_appstream.h b/fpdfsdk/pdfwindow/cpwl_appstream.h
new file mode 100644
index 0000000000..56137864ec
--- /dev/null
+++ b/fpdfsdk/pdfwindow/cpwl_appstream.h
@@ -0,0 +1,43 @@
+// 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_PDFWINDOW_CPWL_APPSTREAM_H_
+#define FPDFSDK_PDFWINDOW_CPWL_APPSTREAM_H_
+
+#include "core/fxcrt/cfx_unowned_ptr.h"
+#include "core/fxcrt/fx_string.h"
+
+class CPDFSDK_Widget;
+class CPDF_Dictionary;
+class CPDF_Stream;
+
+class CPWL_AppStream {
+ public:
+  CPWL_AppStream(CPDFSDK_Widget* widget, CPDF_Dictionary* dict);
+  ~CPWL_AppStream();
+
+  void SetAsPushButton();
+  void SetAsCheckBox();
+  void SetAsRadioButton();
+  void SetAsComboBox(const CFX_WideString* sValue);
+  void SetAsListBox();
+  void SetAsTextField(const CFX_WideString* sValue);
+
+ private:
+  void AddImage(const CFX_ByteString& sAPType, CPDF_Stream* pImage);
+  void Write(const CFX_ByteString& sAPType,
+             const CFX_ByteString& sContents,
+             const CFX_ByteString& sAPState);
+  void Remove(const CFX_ByteString& sAPType);
+
+  CFX_ByteString GetBackgroundAppStream() const;
+  CFX_ByteString GetBorderAppStream() const;
+
+  CFX_UnownedPtr<CPDFSDK_Widget> widget_;
+  CFX_UnownedPtr<CPDF_Dictionary> dict_;
+};
+
+#endif  // FPDFSDK_PDFWINDOW_CPWL_APPSTREAM_H_