44 lines
1.9 KiB
Plaintext
44 lines
1.9 KiB
Plaintext
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsISupports.idl"
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interface nsIDOMDragEvent;
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interface nsIURI;
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[scriptable, uuid(6B58A5A7-76D0-4E93-AB2E-4DE108683FF8)]
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interface nsIDroppedLinkHandler : nsISupports
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{
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/**
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* Determines if a link being dragged can be dropped and returns true if so.
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* aEvent should be a dragenter or dragover event.
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*
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* If aAllowSameDocument is false, drops are only allowed if the document
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* of the source of the drag is different from the destination. This check
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* includes any parent, sibling and child frames in the same content tree.
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* If true, the source is not checked.
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*/
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boolean canDropLink(in nsIDOMDragEvent aEvent, in boolean aAllowSameDocument);
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/**
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* Given a drop event aEvent, determines the link being dragged and returns
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* it. If a uri is returned the caller can, for instance, load it. If null
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* is returned, there is no valid link to be dropped.
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*
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* A NS_ERROR_DOM_SECURITY_ERR error will be thrown and the event cancelled if
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* the receiving target should not load the uri for security reasons. This
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* will occur if any of the following conditions are true:
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* - the source of the drag initiated a link for dragging that
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* it itself cannot access. This prevents a source document from tricking
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* the user into a dragging a chrome url, for example.
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* - aDisallowInherit is true, and the URI being dropped would inherit the
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* current document's security context (URI_INHERITS_SECURITY_CONTEXT).
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*
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* aName is filled in with the link title if it exists, or an empty string
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* otherwise.
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*/
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AString dropLink(in nsIDOMDragEvent aEvent, out AString aName,
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[optional] in boolean aDisallowInherit);
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};
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