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76 lines
3.4 KiB
Plaintext
76 lines
3.4 KiB
Plaintext
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is the Mozilla Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2010
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Neil Deakin <enndeakin@gmail.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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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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