GTK: implement extension bookmark manager drag api....

chrome/browser/gtk/bookmark_utils_gtk.cc

 // 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.
 
 #include "chrome/browser/gtk/bookmark_utils_gtk.h"
 
 #include "app/gtk_dnd_util.h"
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
 #include "base/pickle.h"
@@ skipping 180 matching lines @@
     gtk_util::SetLabelColor(label, NULL);
   } else {
     GdkColor color = provider->GetGdkColor(
         BrowserThemeProvider::COLOR_BOOKMARK_TEXT);
     gtk_util::SetLabelColor(label, &color);
   }
 }
 
 // DnD-related -----------------------------------------------------------------
 
+int GetCodeMask(bool folder) {
+  int rv = gtk_dnd_util::CHROME_BOOKMARK_ITEM;
+  if (!folder) {
+    rv |= gtk_dnd_util::TEXT_URI_LIST |
+          gtk_dnd_util::TEXT_PLAIN |
+          gtk_dnd_util::NETSCAPE_URL;
+  }
+  return rv;
+}
+
 void WriteBookmarkToSelection(const BookmarkNode* node,
                               GtkSelectionData* selection_data,
                               guint target_type,
                               Profile* profile) {
   DCHECK(node);
   std::vector<const BookmarkNode*> nodes;
   nodes.push_back(node);
   WriteBookmarksToSelection(nodes, selection_data, target_type, profile);
 }
 
@@ skipping 54 matching lines @@
   }
 }
 
 std::vector<const BookmarkNode*> GetNodesFromSelection(
     GdkDragContext* context,
     GtkSelectionData* selection_data,
     guint target_type,
     Profile* profile,
     gboolean* delete_selection_data,
     gboolean* dnd_success) {
-  *delete_selection_data = FALSE;
-  *dnd_success = FALSE;
+  if (delete_selection_data)
+    *delete_selection_data = FALSE;
+  if (dnd_success)
+    *dnd_success = FALSE;
 
   if ((selection_data != NULL) && (selection_data->length >= 0)) {
-    if (context->action == GDK_ACTION_MOVE) {
+    if (context && delete_selection_data && context->action == GDK_ACTION_MOVE)
       *delete_selection_data = TRUE;
-    }
 
     switch (target_type) {
       case gtk_dnd_util::CHROME_BOOKMARK_ITEM: {
-        *dnd_success = TRUE;
+        if (dnd_success)
+          *dnd_success = TRUE;
         Pickle pickle(reinterpret_cast<char*>(selection_data->data),
                       selection_data->length);
         BookmarkDragData drag_data;
         drag_data.ReadFromPickle(&pickle);
         return drag_data.GetNodes(profile);
       }
       default: {
         DLOG(ERROR) << "Unsupported drag received type: " << target_type;
       }
     }
@@ skipping 18 matching lines @@
   std::vector<GURL> urls;
   gtk_dnd_util::ExtractURIList(selection_data, &urls);
   for (size_t i = 0; i < urls.size(); ++i) {
     std::string title = GetNameForURL(urls[i]);
     model->AddURL(parent, idx++, UTF8ToWide(title), urls[i]);
   }
   return true;
 }
 
 }  // namespace bookmark_utils