Refactors OSExchangeData for easier portability.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/164401

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@23230 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 106 insertions, 0 deletions

diff --git a/app/os_exchange_data_provider_gtk.h b/app/os_exchange_data_provider_gtk.h
new file mode 100644
index 0000000..dd9c009
--- /dev/null
+++ b/app/os_exchange_data_provider_gtk.h
@@ -0,0 +1,106 @@
+// Copyright (c) 2009 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 APP_OS_EXCHANGE_DATA_PROVIDER_GTK_H_
+#define APP_OS_EXCHANGE_DATA_PROVIDER_GTK_H_
+
+#include <gtk/gtk.h>
+#include <map>
+#include <set>
+#include <string>
+#include <vector>
+
+#include "app/os_exchange_data.h"
+#include "base/pickle.h"
+#include "base/string16.h"
+#include "googleurl/src/gurl.h"
+
+// OSExchangeData::Provider implementation for Gtk. OSExchangeDataProviderGtk
+// is created with a set of known data types. In addition specific data
+// types can be set on OSExchangeDataProviderGtk by way of the various setters.
+// The various has methods return true if the format was supplied to the
+// constructor, or explicitly set.
+class OSExchangeDataProviderGtk : public OSExchangeData::Provider {
+ public:
+  OSExchangeDataProviderGtk(int known_formats,
+                            const std::set<GdkAtom>& known_custom_formats_);
+  OSExchangeDataProviderGtk();
+
+  virtual ~OSExchangeDataProviderGtk();
+
+  int known_formats() const { return known_formats_; }
+  const std::set<GdkAtom>& known_custom_formats() const {
+    return known_custom_formats_;
+  }
+
+  // Returns true if all the formats and custom formats identified by |formats|
+  // and |custom_formats| have been set in this provider.
+  //
+  // NOTE: this is NOT the same as whether a format may be provided (as is
+  // returned by the various HasXXX methods), but rather if the data for the
+  // formats has been set on this provider by way of the various Setter
+  // methods.
+  bool HasDataForAllFormats(int formats,
+                            const std::set<GdkAtom>& custom_formats) const;
+
+  // Provider methods.
+  virtual void SetString(const std::wstring& data);
+  virtual void SetURL(const GURL& url, const std::wstring& title);
+  virtual void SetFilename(const std::wstring& full_path);
+  virtual void SetPickledData(OSExchangeData::CustomFormat format,
+                              const Pickle& data);
+  virtual void SetFileContents(const std::wstring& filename,
+                               const std::string& file_contents);
+  virtual void SetHtml(const std::wstring& html, const GURL& base_url);
+  virtual bool GetString(std::wstring* data) const;
+  virtual bool GetURLAndTitle(GURL* url, std::wstring* title) const;
+  virtual bool GetFilename(std::wstring* full_path) const;
+  virtual bool GetPickledData(OSExchangeData::CustomFormat format,
+                              Pickle* data) const;
+  virtual bool GetFileContents(std::wstring* filename,
+                               std::string* file_contents) const;
+  virtual bool GetHtml(std::wstring* html, GURL* base_url) const;
+  virtual bool HasString() const;
+  virtual bool HasURL() const;
+  virtual bool HasFile() const;
+  virtual bool HasFileContents() const;
+  virtual bool HasHtml() const;
+  virtual bool HasCustomFormat(OSExchangeData::CustomFormat format) const;
+
+ private:
+  typedef std::map<OSExchangeData::CustomFormat, Pickle>  PickleData;
+
+  // These are the possible formats the OSExchangeData may contain. Don't
+  // confuse this with the actual formats that have been set, which are
+  // |formats_| and |custom_formats_|.
+  const int known_formats_;
+  const std::set<GdkAtom> known_custom_formats_;
+
+  // Actual formats that have been set. See comment above |known_formats_|
+  // for details.
+  int formats_;
+  std::set<GdkAtom> custom_formats_;
+
+  // String contents.
+  string16 string_;
+
+  // URL contents.
+  GURL url_;
+  string16 title_;
+
+  // File contents.
+  string16 filename_;
+  std::string file_contents_;
+
+  // HTML contents.
+  string16 html_;
+  GURL base_url_;
+
+  // PICKLED_DATA contents.
+  PickleData pickle_data_;
+
+  DISALLOW_COPY_AND_ASSIGN(OSExchangeDataProviderGtk);
+};
+
+#endif  // APP_OS_EXCHANGE_DATA_PROVIDER_GTK_H_