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Diffstat (limited to 'Source/WebCore/dom/Clipboard.cpp')
| -rw-r--r-- | Source/WebCore/dom/Clipboard.cpp | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/Source/WebCore/dom/Clipboard.cpp b/Source/WebCore/dom/Clipboard.cpp new file mode 100644 index 0000000..6956257 --- /dev/null +++ b/Source/WebCore/dom/Clipboard.cpp @@ -0,0 +1,161 @@ +/* + * 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, 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); +} + +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; +} + +} // namespace WebCore |