Plumb the DragOperation through all the layers between the platform Drag-n-drop code and WebCore.

This allows the HTML5 DataTransfer effectAllowed and dropEffect properties to be set correctly in JS handlers, as per the HTML5 spec.
(The drag-dropeffect test isn't in WebKit yet -- it's part of a separate WebKit patch that's been in review for weeks.)
R=darin,pink
BUG=http://code.google.com/p/chromium/issues/detail?id=14654, http://code.google.com/p/chromium/issues/detail?id=20985
TEST=LayoutTests/fast/events/drag-dropeffect.html, LayoutTests/editing/pasteboard/files-during-page-drags.html
Review URL: http://codereview.chromium.org/174364

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@25629 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 59 insertions, 0 deletions

diff --git a/webkit/api/public/WebDragOperation.h b/webkit/api/public/WebDragOperation.h
new file mode 100644
index 0000000..1a9b9ce
--- /dev/null
+++ b/webkit/api/public/WebDragOperation.h
@@ -0,0 +1,59 @@
+/*
+* Copyright (C) 2009 Google Inc. All rights reserved.
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are
+* met:
+*
+*     * Redistributions of source code must retain the above copyright
+* notice, this list of conditions and the following disclaimer.
+*     * Redistributions in binary form must reproduce the above
+* copyright notice, this list of conditions and the following disclaimer
+* in the documentation and/or other materials provided with the
+* distribution.
+*     * Neither the name of Google Inc. nor the names of its
+* contributors may be used to endorse or promote products derived from
+* this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef WebDragOperation_h
+#define WebDragOperation_h
+
+#include <limits.h>
+
+namespace WebKit {
+
+    // "Verb" of a drag-and-drop operation as negotiated between the source and
+    // destination.
+    // (These constants match their equivalents in WebCore's DragActions.h and
+    // should not be renumbered.)
+    enum WebDragOperation {
+        WebDragOperationNone    = 0,
+        WebDragOperationCopy    = 1,
+        WebDragOperationLink    = 2,
+        WebDragOperationGeneric = 4,
+        WebDragOperationPrivate = 8,
+        WebDragOperationMove    = 16,
+        WebDragOperationDelete  = 32,
+        WebDragOperationEvery   = UINT_MAX
+    };
+
+    // Alternate typedef to make it clear when this is being used as a mask
+    // with potentially multiple value bits set.
+    typedef WebDragOperation WebDragOperationsMask;
+
+} // namespace WebKit
+
+#endif