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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsISupports.idl"
+
+interface nsIDOMDragEvent;
+
+[scriptable, uuid(69E14F91-2E09-4CA6-A511-A715C99A2804)]
+interface nsIDroppedLinkItem : nsISupports
+{
+ /**
+ * Returns the URL of the link.
+ */
+ readonly attribute DOMString url;
+
+ /**
+ * Returns the link name.
+ */
+ readonly attribute DOMString name;
+
+ /**
+ * Returns the MIME-Type.
+ */
+ readonly attribute DOMString type;
+};
+
+[scriptable, uuid(21B5C25A-28A9-47BD-8431-FA9116305DED)]
+interface nsIDroppedLinkHandler : nsISupports
+{
+ /**
+ * Determines if a link being dragged can be dropped and returns true if so.
+ * aEvent should be a dragenter or dragover event.
+ *
+ * If aAllowSameDocument is false, drops are only allowed if the document
+ * of the source of the drag is different from the destination. This check
+ * includes any parent, sibling and child frames in the same content tree.
+ * If true, the source is not checked.
+ */
+ boolean canDropLink(in nsIDOMDragEvent aEvent, in boolean aAllowSameDocument);
+
+ /**
+ * Given a drop event aEvent, determines the link being dragged and returns
+ * it. If a uri is returned the caller can, for instance, load it. If null
+ * is returned, there is no valid link to be dropped.
+ *
+ * A NS_ERROR_DOM_SECURITY_ERR error will be thrown and the event cancelled if
+ * the receiving target should not load the uri for security reasons. This
+ * will occur if any of the following conditions are true:
+ * - the source of the drag initiated a link for dragging that
+ * it itself cannot access. This prevents a source document from tricking
+ * the user into a dragging a chrome url, for example.
+ * - aDisallowInherit is true, and the URI being dropped would inherit the
+ * current document's security context (URI_INHERITS_SECURITY_CONTEXT).
+ *
+ * aName is filled in with the link title if it exists, or an empty string
+ * otherwise.
+ */
+ AString dropLink(in nsIDOMDragEvent aEvent, out AString aName,
+ [optional] in boolean aDisallowInherit);
+
+ /**
+ * Given a drop event aEvent, determines links being dragged and returns
+ * them. If links are returned the caller can, for instance, load them. If
+ * the count of links is 0, there is no valid link to be dropped.
+ *
+ * A NS_ERROR_DOM_SECURITY_ERR error will be thrown and the event cancelled if
+ * the receiving target should not load the uri for security reasons. This
+ * will occur if any of the following conditions are true:
+ * - the source of the drag initiated a link for dragging that
+ * it itself cannot access. This prevents a source document from tricking
+ * the user into a dragging a chrome url, for example.
+ * - aDisallowInherit is true, and the URI being dropped would inherit the
+ * current document's security context (URI_INHERITS_SECURITY_CONTEXT).
+ */
+ void dropLinks(in nsIDOMDragEvent aEvent,
+ [optional] in boolean aDisallowInherit,
+ [optional] out unsigned long aCount,
+ [retval, array, size_is(aCount)] out nsIDroppedLinkItem aLinks);
+};