Source code

Revision control

Copy as Markdown

Other Tools

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 */
#ifndef nsContentAreaDragDrop_h__
#define nsContentAreaDragDrop_h__
#include "nsCOMPtr.h"
#include "nsITransferable.h"
#include "nsIContentSecurityPolicy.h"
class nsICookieJarSettings;
class nsPIDOMWindowOuter;
class nsITransferable;
class nsIContent;
class nsIFile;
namespace mozilla::dom {
class DataTransfer;
class Selection;
} // namespace mozilla::dom
// class nsContentAreaDragDrop, used to generate the dragdata
class nsContentAreaDragDrop {
* 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
* aSelection - [out] set to the selection being dragged, or null if no
* selection is being dragged.
* aDragNode - [out] the link, image or area being dragged, or null if the
* drag occurred on another element.
* aPrincipal - [out] set to the triggering principal of the drag, or null if
* it's from browser chrome or OS
* aCSP - [out] set to the CSP of the Drag, or null if
* it's from browser chrome or OS
* aCookieJarSettings - [out] set to the cookieJarSetting of the Drag, or null
* if it's from browser chrome or OS
static nsresult GetDragData(nsPIDOMWindowOuter* aWindow, nsIContent* aTarget,
nsIContent* aSelectionTargetNode,
bool aIsAltKeyPressed,
mozilla::dom::DataTransfer* aDataTransfer,
bool* aCanDrag,
mozilla::dom::Selection** aSelection,
nsIContent** aDragNode, nsIPrincipal** aPrincipal,
nsIContentSecurityPolicy** aCsp,
nsICookieJarSettings** aCookieJarSettings);
// 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 {
virtual ~nsContentAreaDragDropDataProvider() = default;
nsresult SaveURIToFile(nsIURI* inSourceURI,
nsIPrincipal* inTriggeringPrincipal,
nsICookieJarSettings* inCookieJarSettings,
nsIFile* inDestFile, nsContentPolicyType inPolicyType,
bool isPrivate);
#endif /* nsContentAreaDragDrop_h__ */