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/*
* 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 "FileList.h"
#include "Frame.h"
#include "FrameLoader.h"
#include "Image.h"
namespace WebCore {
Clipboard::Clipboard(ClipboardAccessPolicy policy, ClipboardType clipboardType)
: m_policy(policy)
, m_dropEffect("uninitialized")
, m_effectAllowed("uninitialized")
, m_dragStarted(false)
, m_clipboardType(clipboardType)
, 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 (DragOperation)(DragOperationGeneric | DragOperationMove);
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 == (DragOperation)(DragOperationGeneric | 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 || op == (DragOperation)(DragOperationGeneric | DragOperationMove));
m_dropEffect = IEOpFromDragOp(op);
}
bool Clipboard::hasFileOfType(const String& type) const
{
if (m_policy != ClipboardReadable && m_policy != ClipboardTypesReadable)
return false;
RefPtr<FileList> fileList = files();
if (fileList->isEmpty())
return false;
for (unsigned int f = 0; f < fileList->length(); f++) {
if (equalIgnoringCase(fileList->item(f)->type(), type))
return true;
}
return false;
}
bool Clipboard::hasStringOfType(const String& type) const
{
if (m_policy != ClipboardReadable && m_policy != ClipboardTypesReadable)
return false;
return types().contains(type);
}
void Clipboard::setDropEffect(const String &effect)
{
if (!isForDragAndDrop())
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 (!isForDragAndDrop())
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;
}
DragOperation convertDropZoneOperationToDragOperation(const String& dragOperation)
{
if (dragOperation == "copy")
return DragOperationCopy;
if (dragOperation == "move")
return DragOperationMove;
if (dragOperation == "link")
return DragOperationLink;
return DragOperationNone;
}
String convertDragOperationToDropZoneOperation(DragOperation operation)
{
switch (operation) {
case DragOperationCopy:
return String("copy");
case DragOperationMove:
return String("move");
case DragOperationLink:
return String("link");
default:
return String("copy");
}
}
bool Clipboard::hasDropZoneType(const String& keyword)
{
if (keyword.startsWith("file:"))
return hasFileOfType(keyword.substring(5));
if (keyword.startsWith("string:"))
return hasStringOfType(keyword.substring(7));
return false;
}
} // namespace WebCore
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