134 lines
4.4 KiB
C++
134 lines
4.4 KiB
C++
/* ***** 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 Communicator.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications.
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* Portions created by the Initial Developer are Copyright (C) 2002
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Mike Pinkerton <pinkerton@netscape.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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#ifndef nsContentAreaDragDrop_h__
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#define nsContentAreaDragDrop_h__
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#include "nsCOMPtr.h"
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#include "nsIDragDropHandler.h"
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#include "nsIDOMDragListener.h"
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#include "nsIDOMEventReceiver.h"
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#include "nsITransferable.h"
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class nsIDOMNode;
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class nsISelection;
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class nsITransferable;
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class nsIImage;
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class nsIPresShell;
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class nsPresContext;
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class nsIContent;
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class nsIDocument;
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class nsIURI;
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class nsIFile;
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class nsISimpleEnumerator;
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// {1f34bc80-1bc7-11d6-a384-d705dd0746fc}
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#define NS_CONTENTAREADRAGDROP_CID \
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{ 0x1f34bc80, 0x1bc7, 0x11d6, \
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{ 0xa3, 0x84, 0xd7, 0x05, 0xdd, 0x07, 0x46, 0xfc } }
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#define NS_CONTENTAREADRAGDROP_CONTRACTID "@mozilla.org:/content/content-area-dragdrop;1"
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//
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// class nsContentAreaDragDrop
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//
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// The class that listens to the chrome events handles anything
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// related to drag and drop. Registers itself with the DOM with
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// AddChromeListeners() and removes itself with
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// RemoveChromeListeners().
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//
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class nsContentAreaDragDrop : public nsIDOMDragListener,
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public nsIDragDropHandler,
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public nsIFlavorDataProvider
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{
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSIDRAGDROPHANDLER
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NS_DECL_NSIFLAVORDATAPROVIDER
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nsContentAreaDragDrop();
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virtual ~nsContentAreaDragDrop();
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// nsIDOMDragListener
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NS_IMETHOD DragEnter(nsIDOMEvent* aMouseEvent);
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NS_IMETHOD DragOver(nsIDOMEvent* aMouseEvent);
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NS_IMETHOD DragExit(nsIDOMEvent* aMouseEvent);
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NS_IMETHOD DragDrop(nsIDOMEvent* aMouseEvent);
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NS_IMETHOD DragGesture(nsIDOMEvent* aMouseEvent);
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NS_IMETHOD HandleEvent(nsIDOMEvent *event);
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private:
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// Add/remove the relevant listeners
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nsresult AddDragListener();
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nsresult RemoveDragListener();
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// utility routines
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static void NormalizeSelection(nsIDOMNode* inBaseNode,
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nsISelection* inSelection);
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static void GetEventDocument(nsIDOMEvent* inEvent,
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nsIDOMDocument** outDocument);
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static nsresult SaveURIToFile(nsAString& inSourceURIString,
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nsIFile* inDestFile);
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nsresult CreateTransferable(nsIDOMEvent* inMouseEvent,
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nsITransferable** outTrans);
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void ExtractURLFromData(const nsACString & inFlavor,
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nsISupports* inDataWrapper, PRUint32 inDataLen,
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nsAString & outURL);
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nsresult GetHookEnumeratorFromEvent(nsIDOMEvent* inEvent,
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nsISimpleEnumerator** outEnumerator);
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PRPackedBool mListenerInstalled;
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nsCOMPtr<nsIDOMEventReceiver> mEventReceiver;
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// weak ref, this is probably my owning webshell
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nsIWebNavigation* mNavigator;
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};
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#endif /* nsContentAreaDragDrop_h__ */
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