162 lines
5.6 KiB
Plaintext
162 lines
5.6 KiB
Plaintext
/*
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* Copyright (C) 2007-2020 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#import "config.h"
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#import "DragController.h"
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#if ENABLE(DRAG_SUPPORT)
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#import "DataTransfer.h"
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#import "Document.h"
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#import "DocumentFragment.h"
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#import "DragClient.h"
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#import "DragData.h"
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#import "Editor.h"
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#import "EditorClient.h"
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#import "Element.h"
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#import "File.h"
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#import "Frame.h"
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#import "FrameView.h"
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#import "HTMLAttachmentElement.h"
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#import "Page.h"
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#import "Pasteboard.h"
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#import "PasteboardStrategy.h"
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#import "PlatformStrategies.h"
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#import "Range.h"
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#import "RuntimeEnabledFeatures.h"
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#if PLATFORM(IOS_FAMILY)
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#import <MobileCoreServices/MobileCoreServices.h>
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#endif
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namespace WebCore {
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const int DragController::MaxOriginalImageArea = 1500 * 1500;
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const int DragController::DragIconRightInset = 7;
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const int DragController::DragIconBottomInset = 3;
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const float DragController::DragImageAlpha = 0.75f;
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bool DragController::isCopyKeyDown(const DragData& dragData)
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{
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return dragData.flags().contains(DragApplicationFlags::IsCopyKeyDown);
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}
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std::optional<DragOperation> DragController::dragOperation(const DragData& dragData)
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{
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if (dragData.flags().contains(DragApplicationFlags::IsModal))
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return std::nullopt;
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bool mayContainURL;
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if (canLoadDataFromDraggingPasteboard())
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mayContainURL = dragData.containsURL();
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else
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mayContainURL = dragData.containsURLTypeIdentifier();
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if (!mayContainURL && !dragData.containsPromise())
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return std::nullopt;
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if (!m_documentUnderMouse || (!(dragData.flags().containsAll({ DragApplicationFlags::HasAttachedSheet, DragApplicationFlags::IsSource }))))
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return DragOperation::Copy;
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return std::nullopt;
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}
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const IntSize& DragController::maxDragImageSize()
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{
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static const IntSize maxDragImageSize(400, 400);
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return maxDragImageSize;
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}
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void DragController::cleanupAfterSystemDrag()
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{
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#if PLATFORM(MAC)
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// Drag has ended, dragEnded *should* have been called, however it is possible
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// for the UIDelegate to take over the drag, and fail to send the appropriate
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// drag termination event. As dragEnded just resets drag variables, we just
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// call it anyway to be on the safe side.
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// We don't want to do this for WebKit2, since the client call to start the drag
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// is asynchronous.
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if (m_page.mainFrame().view()->platformWidget())
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dragEnded();
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#endif
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}
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#if PLATFORM(IOS_FAMILY)
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DragOperation DragController::platformGenericDragOperation()
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{
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// On iOS, UIKit skips the -performDrop invocation altogether if MOVE is forbidden.
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// Thus, if MOVE is not allowed in the drag source operation mask, fall back to only other allowable action, COPY.
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return DragOperation::Copy;
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}
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void DragController::updateSupportedTypeIdentifiersForDragHandlingMethod(DragHandlingMethod dragHandlingMethod, const DragData& dragData) const
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{
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Vector<String> supportedTypes;
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ALLOW_DEPRECATED_DECLARATIONS_BEGIN
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switch (dragHandlingMethod) {
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case DragHandlingMethod::PageLoad:
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supportedTypes.append(kUTTypeURL);
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break;
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case DragHandlingMethod::EditPlainText:
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supportedTypes.append(kUTTypeURL);
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supportedTypes.append(kUTTypePlainText);
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break;
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case DragHandlingMethod::EditRichText:
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if (RuntimeEnabledFeatures::sharedFeatures().attachmentElementEnabled()) {
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supportedTypes.append(WebArchivePboardType);
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supportedTypes.append(kUTTypeContent);
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supportedTypes.append(kUTTypeItem);
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} else {
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for (NSString *type in Pasteboard::supportedWebContentPasteboardTypes())
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supportedTypes.append(type);
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}
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break;
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case DragHandlingMethod::SetColor:
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supportedTypes.append(UIColorPboardType);
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break;
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default:
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for (NSString *type in Pasteboard::supportedFileUploadPasteboardTypes())
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supportedTypes.append(type);
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break;
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}
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ALLOW_DEPRECATED_DECLARATIONS_END
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auto context = dragData.createPasteboardContext();
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platformStrategies()->pasteboardStrategy()->updateSupportedTypeIdentifiers(supportedTypes, dragData.pasteboardName(), context.get());
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}
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#endif // PLATFORM(IOS_FAMILY)
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void DragController::declareAndWriteDragImage(DataTransfer& dataTransfer, Element& element, const URL& url, const String& label)
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{
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client().declareAndWriteDragImage(dataTransfer.pasteboard().name(), element, url, label, element.document().frame());
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}
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} // namespace WebCore
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#endif // ENABLE(DRAG_SUPPORT)
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