/* | |
* Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved. | |
* | |
* Redistribution and use in source and binary forms, with or without | |
* modification, are permitted provided that the following conditions | |
* are met: | |
* 1. Redistributions of source code must retain the above copyright | |
* notice, this list of conditions and the following disclaimer. | |
* 2. Redistributions in binary form must reproduce the above copyright | |
* notice, this list of conditions and the following disclaimer in the | |
* documentation and/or other materials provided with the distribution. | |
* | |
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY | |
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR | |
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
*/ | |
#include "config.h" | |
#include "Clipboard.h" | |
#include "CachedImage.h" | |
#include "Frame.h" | |
#include "FrameLoader.h" | |
#include "Image.h" | |
namespace WebCore { | |
Clipboard::Clipboard(ClipboardAccessPolicy policy, bool isForDragging) | |
: m_policy(policy) | |
, m_dropEffect("uninitialized") | |
, m_effectAllowed("uninitialized") | |
, m_dragStarted(false) | |
, m_forDragging(isForDragging) | |
, m_dragImage(0) | |
{ | |
} | |
void Clipboard::setAccessPolicy(ClipboardAccessPolicy policy) | |
{ | |
// once you go numb, can never go back | |
ASSERT(m_policy != ClipboardNumb || policy == ClipboardNumb); | |
m_policy = policy; | |
} | |
// These "conversion" methods are called by both WebCore and WebKit, and never make sense to JS, so we don't | |
// worry about security for these. They don't allow access to the pasteboard anyway. | |
static DragOperation dragOpFromIEOp(const String& op) | |
{ | |
// yep, it's really just this fixed set | |
if (op == "uninitialized") | |
return DragOperationEvery; | |
if (op == "none") | |
return DragOperationNone; | |
if (op == "copy") | |
return DragOperationCopy; | |
if (op == "link") | |
return DragOperationLink; | |
if (op == "move") | |
return DragOperationGeneric; // FIXME: Why is this DragOperationGeneric? <http://webkit.org/b/33697> | |
if (op == "copyLink") | |
return (DragOperation)(DragOperationCopy | DragOperationLink); | |
if (op == "copyMove") | |
return (DragOperation)(DragOperationCopy | DragOperationGeneric | DragOperationMove); | |
if (op == "linkMove") | |
return (DragOperation)(DragOperationLink | DragOperationGeneric | DragOperationMove); | |
if (op == "all") | |
return DragOperationEvery; | |
return DragOperationPrivate; // really a marker for "no conversion" | |
} | |
static String IEOpFromDragOp(DragOperation op) | |
{ | |
bool moveSet = !!((DragOperationGeneric | DragOperationMove) & op); | |
if ((moveSet && (op & DragOperationCopy) && (op & DragOperationLink)) | |
|| (op == DragOperationEvery)) | |
return "all"; | |
if (moveSet && (op & DragOperationCopy)) | |
return "copyMove"; | |
if (moveSet && (op & DragOperationLink)) | |
return "linkMove"; | |
if ((op & DragOperationCopy) && (op & DragOperationLink)) | |
return "copyLink"; | |
if (moveSet) | |
return "move"; | |
if (op & DragOperationCopy) | |
return "copy"; | |
if (op & DragOperationLink) | |
return "link"; | |
return "none"; | |
} | |
DragOperation Clipboard::sourceOperation() const | |
{ | |
DragOperation op = dragOpFromIEOp(m_effectAllowed); | |
ASSERT(op != DragOperationPrivate); | |
return op; | |
} | |
DragOperation Clipboard::destinationOperation() const | |
{ | |
DragOperation op = dragOpFromIEOp(m_dropEffect); | |
ASSERT(op == DragOperationCopy || op == DragOperationNone || op == DragOperationLink || op == DragOperationGeneric || op == DragOperationMove || op == DragOperationEvery); | |
return op; | |
} | |
void Clipboard::setSourceOperation(DragOperation op) | |
{ | |
ASSERT_ARG(op, op != DragOperationPrivate); | |
m_effectAllowed = IEOpFromDragOp(op); | |
} | |
void Clipboard::setDestinationOperation(DragOperation op) | |
{ | |
ASSERT_ARG(op, op == DragOperationCopy || op == DragOperationNone || op == DragOperationLink || op == DragOperationGeneric || op == DragOperationMove); | |
m_dropEffect = IEOpFromDragOp(op); | |
} | |
void Clipboard::setDropEffect(const String &effect) | |
{ | |
if (!m_forDragging) | |
return; | |
// The attribute must ignore any attempts to set it to a value other than none, copy, link, and move. | |
if (effect != "none" && effect != "copy" && effect != "link" && effect != "move") | |
return; | |
if (m_policy == ClipboardReadable || m_policy == ClipboardTypesReadable) | |
m_dropEffect = effect; | |
} | |
void Clipboard::setEffectAllowed(const String &effect) | |
{ | |
if (!m_forDragging) | |
return; | |
if (dragOpFromIEOp(effect) == DragOperationPrivate) { | |
// This means that there was no conversion, and the effectAllowed that | |
// we are passed isn't a valid effectAllowed, so we should ignore it, | |
// and not set m_effectAllowed. | |
// The attribute must ignore any attempts to set it to a value other than | |
// none, copy, copyLink, copyMove, link, linkMove, move, all, and uninitialized. | |
return; | |
} | |
if (m_policy == ClipboardWritable) | |
m_effectAllowed = effect; | |
} | |
} // namespace WebCore |