Pepper: Add a C++ wrapper for the trusted file chooser.

This makes it easy (for trusted Pepper plugins) to opt for showing a file
chooser while avoiding the user-gesture check.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/8275013

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@105392 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 94 insertions, 3 deletions

diff --git a/ppapi/cpp/dev/file_chooser_dev.h b/ppapi/cpp/dev/file_chooser_dev.h
index 6bbe0c5..ec0a6d5 100644
--- a/ppapi/cpp/dev/file_chooser_dev.h
+++ b/ppapi/cpp/dev/file_chooser_dev.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
@@ -55,7 +55,7 @@ class FileChooser_Dev : public Resource {
   ///
   /// @return PP_OK_COMPLETIONPENDING if request to show the dialog was
   /// successful, another error code from pp_errors.h on failure.
-  int32_t Show(const CompletionCallback& cc);
+  virtual int32_t Show(const CompletionCallback& cc);
 
   /// After a successful completion callback call from Show, this method may be
   /// used to query the chosen files.  It should be called in a loop until it
@@ -65,7 +65,7 @@ class FileChooser_Dev : public Resource {
   /// PP_FileSystemType_External.  If the user chose no files or cancelled the
   /// dialog, then this method will simply return an is_null() FileRef the
   /// first time it is called.
-  FileRef GetNextChosenFile() const;
+  virtual FileRef GetNextChosenFile() const;
 };
 
 }  // namespace pp
diff --git a/ppapi/cpp/trusted/file_chooser_trusted.cc b/ppapi/cpp/trusted/file_chooser_trusted.cc
new file mode 100644
index 0000000..d0c6c50
--- /dev/null
+++ b/ppapi/cpp/trusted/file_chooser_trusted.cc
@@ -0,0 +1,53 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ppapi/cpp/trusted/file_chooser_trusted.h"
+
+#include "ppapi/c/pp_bool.h"
+#include "ppapi/cpp/completion_callback.h"
+#include "ppapi/c/pp_errors.h"
+#include "ppapi/cpp/module_impl.h"
+#include "ppapi/cpp/var.h"
+#include "ppapi/c/trusted/ppb_file_chooser_trusted.h"
+
+namespace pp {
+
+namespace {
+
+template <> const char* interface_name<PPB_FileChooserTrusted>() {
+  return PPB_FILECHOOSER_TRUSTED_INTERFACE;
+}
+
+}  // namespace
+
+FileChooser_Trusted::FileChooser_Trusted() : save_as_(false) {
+}
+
+FileChooser_Trusted::FileChooser_Trusted(const Instance* instance,
+                                         PP_FileChooserMode_Dev mode,
+                                         const Var& accept_mime_types,
+                                         bool save_as,
+                                         const std::string& suggested_file_name)
+    : FileChooser_Dev(instance, mode, accept_mime_types),
+      save_as_(save_as),
+      suggested_file_name_(suggested_file_name) {
+}
+
+FileChooser_Trusted::FileChooser_Trusted(const FileChooser_Trusted& other)
+    : FileChooser_Dev(other),
+      save_as_(other.save_as_),
+      suggested_file_name_(other.suggested_file_name_) {
+}
+
+int32_t FileChooser_Trusted::Show(const CompletionCallback& cc) {
+  if (!has_interface<PPB_FileChooserTrusted>())
+    return cc.MayForce(PP_ERROR_NOINTERFACE);
+  return get_interface<PPB_FileChooserTrusted>()->ShowWithoutUserGesture(
+      pp_resource(),
+      PP_FromBool(save_as_),
+      Var(suggested_file_name_).pp_var(),
+      cc.pp_completion_callback());
+}
+
+}  // namespace pp
diff --git a/ppapi/cpp/trusted/file_chooser_trusted.h b/ppapi/cpp/trusted/file_chooser_trusted.h
new file mode 100644
index 0000000..a0227ef
--- /dev/null
+++ b/ppapi/cpp/trusted/file_chooser_trusted.h
@@ -0,0 +1,38 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PPAPI_CPP_TRUSTED_FILE_CHOOSER_TRUSTED_H_
+#define PPAPI_CPP_TRUSTED_FILE_CHOOSER_TRUSTED_H_
+
+#include <string>
+
+#include "ppapi/cpp/dev/file_chooser_dev.h"
+
+namespace pp {
+
+class FileChooser_Trusted : public FileChooser_Dev {
+ public:
+  /// Creates an is_null() FileChooser_Trusted object.
+  FileChooser_Trusted();
+
+  FileChooser_Trusted(const Instance* instance,
+                      PP_FileChooserMode_Dev mode,
+                      const Var& accept_mime_types,
+                      bool save_as,
+                      const std::string& suggested_file_name);
+
+  FileChooser_Trusted(const FileChooser_Trusted& other);
+
+  // Overrides of method in superclass. This shows without requiring a user
+  // gesture (and can also show save dialogs).
+  virtual int32_t Show(const CompletionCallback& cc);
+
+ private:
+  const bool save_as_;
+  const std::string suggested_file_name_;
+};
+
+}  // namespace pp
+
+#endif  // PPAPI_CPP_TRUSTED_FILE_CHOOSER_TRUSTED_H_