Moves GtkDndUtil into app.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/165423

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@23627 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 70 insertions, 0 deletions

diff --git a/app/gtk_dnd_util.h b/app/gtk_dnd_util.h
new file mode 100644
index 0000000..0698d57
--- /dev/null
+++ b/app/gtk_dnd_util.h
@@ -0,0 +1,70 @@
+// 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_GTK_DND_UTIL_H_
+#define APP_GTK_DND_UTIL_H_
+
+#include <gtk/gtk.h>
+#include <vector>
+
+#include "base/string16.h"
+
+class GURL;
+
+class GtkDndUtil {
+ public:
+  // Registry of all internal int codes for drag and drop.
+  enum {
+    // Intra-application types.
+    CHROME_TAB = 1 << 0,
+    CHROME_BOOKMARK_ITEM = 1 << 1,
+    CHROME_WEBDROP_FILE_CONTENTS = 1 << 2,
+    CHROME_NAMED_URL = 1 << 3,
+
+    // Standard types.
+    TEXT_PLAIN = 1 << 4,
+    TEXT_URI_LIST = 1 << 5,
+    TEXT_HTML = 1 << 6,
+
+    INVALID_TARGET = 1 << 7,
+  };
+
+  // Get the atom for a given target (of the above enum type). Will return NULL
+  // for non-custom targets, such as CHROME_TEXT_PLAIN.
+  static GdkAtom GetAtomForTarget(int target);
+
+  // Creates a target list from the given mask. The mask should be an OR of
+  // CHROME_* values. The target list is returned with ref count 1; the caller
+  // is responsible for unreffing it when it is no longer needed.
+  // Since the MIME type for WEBDROP_FILE_CONTENTS depends on the file's
+  // contents, that flag is ignored by this function. It is the responsibility
+  // of the client code to do the right thing.
+  static GtkTargetList* GetTargetListFromCodeMask(int code_mask);
+
+  // Set the drag target list for |source| with the target list that
+  // corresponds to |code_mask|.
+  static void SetSourceTargetListFromCodeMask(GtkWidget* source, int code_mask);
+
+  // Set the accepted targets list for |dest|. The |target_codes| array should
+  // be sorted in preference order and should be terminated with -1.
+  static void SetDestTargetList(GtkWidget* dest, const int* target_codes);
+
+  // Extracts data of type CHROME_NAMED_URL from |selection_data| into
+  // |url| and |title|. Returns true if the url/title were safely extracted
+  // and the url is valid.
+  static bool ExtractNamedURL(GtkSelectionData* selection_data,
+                              GURL* url,
+                              string16* title);
+
+  // Extracts data of type TEXT_URI_LIST from |selection_data| into |urls|.
+  static bool ExtractURIList(GtkSelectionData* selection_data,
+                             std::vector<GURL>* urls);
+
+ private:
+  GtkDndUtil();
+
+  static void AddTargetToList(GtkTargetList* targets, int target_code);
+};
+
+#endif  // APP_GTK_DND_UTIL_H_