2007-03-22 10:30:00 -07:00
|
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
|
|
*
|
|
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
|
|
* the License. You may obtain a copy of the License at
|
|
|
|
* http://www.mozilla.org/MPL/
|
|
|
|
*
|
|
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
|
|
* for the specific language governing rights and limitations under the
|
|
|
|
* License.
|
|
|
|
*
|
|
|
|
* The Original Code is Mozilla Communicator.
|
|
|
|
*
|
|
|
|
* The Initial Developer of the Original Code is
|
|
|
|
* Netscape Communications.
|
|
|
|
* Portions created by the Initial Developer are Copyright (C) 2002
|
|
|
|
* the Initial Developer. All Rights Reserved.
|
|
|
|
*
|
|
|
|
* Contributor(s):
|
|
|
|
* Mike Pinkerton <pinkerton@netscape.com>
|
|
|
|
*
|
|
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
|
|
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
|
|
|
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
|
|
* the provisions above, a recipient may use your version of this file under
|
|
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
|
|
*
|
|
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
|
|
|
|
|
|
|
|
#ifndef nsContentAreaDragDrop_h__
|
|
|
|
#define nsContentAreaDragDrop_h__
|
|
|
|
|
|
|
|
|
|
|
|
#include "nsCOMPtr.h"
|
|
|
|
|
|
|
|
#include "nsIDragDropHandler.h"
|
2008-10-17 13:04:55 -07:00
|
|
|
#include "nsIDOMEventTarget.h"
|
|
|
|
#include "nsIDOMEventListener.h"
|
2007-03-22 10:30:00 -07:00
|
|
|
#include "nsITransferable.h"
|
|
|
|
|
|
|
|
class nsIDOMNode;
|
2008-10-17 13:04:55 -07:00
|
|
|
class nsIDOMWindow;
|
|
|
|
class nsIDOMDocument;
|
|
|
|
class nsIDOMDragEvent;
|
2007-03-22 10:30:00 -07:00
|
|
|
class nsISelection;
|
|
|
|
class nsITransferable;
|
|
|
|
class nsIContent;
|
|
|
|
class nsIURI;
|
|
|
|
class nsIFile;
|
|
|
|
class nsISimpleEnumerator;
|
2008-08-27 05:07:27 -07:00
|
|
|
class nsDOMDataTransfer;
|
2007-03-22 10:30:00 -07:00
|
|
|
|
|
|
|
// {1f34bc80-1bc7-11d6-a384-d705dd0746fc}
|
|
|
|
#define NS_CONTENTAREADRAGDROP_CID \
|
|
|
|
{ 0x1f34bc80, 0x1bc7, 0x11d6, \
|
|
|
|
{ 0xa3, 0x84, 0xd7, 0x05, 0xdd, 0x07, 0x46, 0xfc } }
|
|
|
|
|
|
|
|
#define NS_CONTENTAREADRAGDROP_CONTRACTID "@mozilla.org:/content/content-area-dragdrop;1"
|
|
|
|
|
|
|
|
|
|
|
|
//
|
|
|
|
// class nsContentAreaDragDrop
|
|
|
|
//
|
|
|
|
// The class that listens to the chrome events handles anything
|
|
|
|
// related to drag and drop. Registers itself with the DOM with
|
|
|
|
// AddChromeListeners() and removes itself with
|
|
|
|
// RemoveChromeListeners().
|
|
|
|
//
|
2008-10-17 13:04:55 -07:00
|
|
|
class nsContentAreaDragDrop : public nsIDragDropHandler,
|
|
|
|
public nsIDOMEventListener
|
2007-03-22 10:30:00 -07:00
|
|
|
{
|
|
|
|
public:
|
|
|
|
NS_DECL_ISUPPORTS
|
|
|
|
NS_DECL_NSIDRAGDROPHANDLER
|
|
|
|
|
|
|
|
nsContentAreaDragDrop();
|
|
|
|
virtual ~nsContentAreaDragDrop();
|
|
|
|
|
|
|
|
NS_IMETHOD HandleEvent(nsIDOMEvent *event);
|
|
|
|
|
2008-08-27 05:07:27 -07:00
|
|
|
/**
|
|
|
|
* Determine what data in the content area, if any, is being dragged.
|
|
|
|
*
|
|
|
|
* aWindow - the window containing the target node
|
|
|
|
* aTarget - the mousedown event target that started the drag
|
|
|
|
* aSelectionTargetNode - the node where the drag event should be fired
|
|
|
|
* aIsAltKeyPressed - true if the Alt key is pressed. In some cases, this
|
|
|
|
* will prevent the drag from occuring. For example,
|
|
|
|
* holding down Alt over a link should select the text,
|
|
|
|
* not drag the link.
|
|
|
|
* aDataTransfer - the dataTransfer for the drag event.
|
|
|
|
* aCanDrag - [out] set to true if the drag may proceed, false to stop the
|
|
|
|
* drag entirely
|
|
|
|
* aDragSelection - [out] set to true to indicate that a selection is being
|
|
|
|
* dragged, rather than a specific node
|
|
|
|
* aDragNode - [out] the link, image or area being dragged, or null if the
|
|
|
|
* drag occured on another element.
|
|
|
|
*/
|
|
|
|
static nsresult GetDragData(nsIDOMWindow* aWindow,
|
|
|
|
nsIContent* aTarget,
|
|
|
|
nsIContent* aSelectionTargetNode,
|
|
|
|
PRBool aIsAltKeyPressed,
|
|
|
|
nsDOMDataTransfer* aDataTransfer,
|
|
|
|
PRBool* aCanDrag,
|
|
|
|
PRBool* aDragSelection,
|
|
|
|
nsIContent** aDragNode);
|
|
|
|
|
2007-03-22 10:30:00 -07:00
|
|
|
private:
|
|
|
|
|
|
|
|
// Add/remove the relevant listeners
|
|
|
|
nsresult AddDragListener();
|
|
|
|
nsresult RemoveDragListener();
|
|
|
|
|
2008-10-17 13:04:55 -07:00
|
|
|
nsresult DragOver(nsIDOMDragEvent* aDragEvent);
|
|
|
|
nsresult Drop(nsIDOMDragEvent* aDragEvent);
|
|
|
|
|
2007-03-22 10:30:00 -07:00
|
|
|
// utility routines
|
|
|
|
static void NormalizeSelection(nsIDOMNode* inBaseNode,
|
|
|
|
nsISelection* inSelection);
|
|
|
|
static void GetEventDocument(nsIDOMEvent* inEvent,
|
|
|
|
nsIDOMDocument** outDocument);
|
|
|
|
|
2008-08-27 05:07:27 -07:00
|
|
|
static void ExtractURLFromData(const nsACString & inFlavor,
|
|
|
|
nsISupports* inDataWrapper, PRUint32 inDataLen,
|
|
|
|
nsAString & outURL);
|
2007-03-22 10:30:00 -07:00
|
|
|
|
2008-10-17 13:04:55 -07:00
|
|
|
nsCOMPtr<nsIDOMEventTarget> mEventTarget;
|
2007-03-22 10:30:00 -07:00
|
|
|
|
|
|
|
// weak ref, this is probably my owning webshell
|
|
|
|
// FIXME: we set this and never null it out. That's bad! See bug 332187.
|
|
|
|
nsIWebNavigation* mNavigator;
|
|
|
|
|
|
|
|
};
|
|
|
|
|
2008-08-27 05:07:27 -07:00
|
|
|
// this is used to save images to disk lazily when the image data is asked for
|
|
|
|
// during the drop instead of when it is added to the drag data transfer. This
|
|
|
|
// ensures that the image data is only created when an image drop is allowed.
|
|
|
|
class nsContentAreaDragDropDataProvider : public nsIFlavorDataProvider
|
|
|
|
{
|
|
|
|
public:
|
|
|
|
NS_DECL_ISUPPORTS
|
|
|
|
NS_DECL_NSIFLAVORDATAPROVIDER
|
|
|
|
|
|
|
|
virtual ~nsContentAreaDragDropDataProvider() {}
|
|
|
|
|
|
|
|
nsresult SaveURIToFile(nsAString& inSourceURIString,
|
|
|
|
nsIFile* inDestFile);
|
|
|
|
};
|
2007-03-22 10:30:00 -07:00
|
|
|
|
|
|
|
|
|
|
|
#endif /* nsContentAreaDragDrop_h__ */
|
|
|
|
|