1538 lines
63 KiB
C++
1538 lines
63 KiB
C++
/*
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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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#include "config.h"
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#include "DragController.h"
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#include "HTMLAnchorElement.h"
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#include "SVGAElement.h"
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#if ENABLE(DRAG_SUPPORT)
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#include "CachedImage.h"
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#include "CachedResourceLoader.h"
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#include "ColorSerialization.h"
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#include "DataTransfer.h"
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#include "Document.h"
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#include "DocumentFragment.h"
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#include "DragActions.h"
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#include "DragClient.h"
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#include "DragData.h"
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#include "DragImage.h"
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#include "DragState.h"
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#include "Editing.h"
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#include "Editor.h"
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#include "EditorClient.h"
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#include "ElementAncestorIterator.h"
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#include "EventHandler.h"
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#include "EventLoop.h"
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#include "File.h"
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#include "FloatRect.h"
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#include "FocusController.h"
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#include "Frame.h"
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#include "FrameLoadRequest.h"
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#include "FrameLoader.h"
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#include "FrameSelection.h"
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#include "FrameView.h"
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#include "HTMLAttachmentElement.h"
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#include "HTMLImageElement.h"
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#include "HTMLInputElement.h"
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#include "HTMLParserIdioms.h"
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#include "HTMLPlugInElement.h"
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#include "HitTestRequest.h"
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#include "HitTestResult.h"
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#include "Image.h"
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#include "ImageOrientation.h"
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#include "MoveSelectionCommand.h"
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#include "Page.h"
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#include "Pasteboard.h"
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#include "PlatformKeyboardEvent.h"
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#include "PluginDocument.h"
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#include "PluginViewBase.h"
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#include "Position.h"
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#include "PromisedAttachmentInfo.h"
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#include "Range.h"
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#include "RenderAttachment.h"
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#include "RenderFileUploadControl.h"
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#include "RenderImage.h"
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#include "RenderView.h"
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#include "ReplaceSelectionCommand.h"
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#include "ResourceRequest.h"
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#include "SecurityOrigin.h"
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#include "Settings.h"
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#include "ShadowRoot.h"
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#include "SimpleRange.h"
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#include "StyleProperties.h"
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#include "Text.h"
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#include "TextEvent.h"
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#include "VisiblePosition.h"
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#include "WebContentReader.h"
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#include "markup.h"
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#include <wtf/SetForScope.h>
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#endif
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#if ENABLE(DATA_DETECTION)
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#include "DataDetection.h"
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#endif
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#if PLATFORM(IOS_FAMILY)
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#include "SelectionGeometry.h"
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#endif
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namespace WebCore {
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bool isDraggableLink(const Element& element)
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{
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if (is<HTMLAnchorElement>(element)) {
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auto& anchorElement = downcast<HTMLAnchorElement>(element);
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if (!anchorElement.isLiveLink())
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return false;
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#if ENABLE(DATA_DETECTION)
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return !DataDetection::isDataDetectorURL(anchorElement.href());
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#else
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return true;
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#endif
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}
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if (is<SVGAElement>(element))
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return element.isLink();
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return false;
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}
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#if ENABLE(DRAG_SUPPORT)
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static PlatformMouseEvent createMouseEvent(const DragData& dragData)
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{
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bool shiftKey = false;
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bool ctrlKey = false;
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bool altKey = false;
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bool metaKey = false;
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PlatformKeyboardEvent::getCurrentModifierState(shiftKey, ctrlKey, altKey, metaKey);
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return PlatformMouseEvent(dragData.clientPosition(), dragData.globalPosition(),
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LeftButton, PlatformEvent::MouseMoved, 0, shiftKey, ctrlKey, altKey,
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metaKey, WallTime::now(), ForceAtClick, NoTap);
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}
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DragController::DragController(Page& page, std::unique_ptr<DragClient>&& client)
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: m_page(page)
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, m_client(WTFMove(client))
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{
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}
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DragController::~DragController() = default;
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static RefPtr<DocumentFragment> documentFragmentFromDragData(const DragData& dragData, Frame& frame, const SimpleRange& context, bool allowPlainText, bool& chosePlainText)
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{
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chosePlainText = false;
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if (dragData.containsCompatibleContent()) {
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if (auto fragment = frame.editor().webContentFromPasteboard(*Pasteboard::create(dragData), context, allowPlainText, chosePlainText))
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return fragment;
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if (dragData.containsURL(DragData::DoNotConvertFilenames)) {
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String title;
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String url = dragData.asURL(DragData::DoNotConvertFilenames, &title);
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if (!url.isEmpty()) {
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auto& document = context.start.document();
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auto anchor = HTMLAnchorElement::create(document);
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anchor->setHref(url);
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if (title.isEmpty()) {
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// Try the plain text first because the URL might be normalized or escaped.
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if (dragData.containsPlainText())
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title = dragData.asPlainText();
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if (title.isEmpty())
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title = url;
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}
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anchor->appendChild(document.createTextNode(title));
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auto fragment = document.createDocumentFragment();
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fragment->appendChild(anchor);
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return fragment;
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}
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}
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}
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if (allowPlainText && dragData.containsPlainText()) {
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chosePlainText = true;
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return createFragmentFromText(context, dragData.asPlainText()).ptr();
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}
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return nullptr;
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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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return DragOperation::Move;
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}
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#endif
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bool DragController::dragIsMove(FrameSelection& selection, const DragData& dragData)
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{
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const VisibleSelection& visibleSelection = selection.selection();
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return m_documentUnderMouse == m_dragInitiator && visibleSelection.isContentEditable() && visibleSelection.isRange() && !isCopyKeyDown(dragData);
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}
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void DragController::clearDragCaret()
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{
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m_page.dragCaretController().clear();
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}
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void DragController::dragEnded()
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{
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m_dragInitiator = nullptr;
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m_didInitiateDrag = false;
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m_documentUnderMouse = nullptr;
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clearDragCaret();
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removeAllDroppedImagePlaceholders();
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client().dragEnded();
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}
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std::optional<DragOperation> DragController::dragEntered(const DragData& dragData)
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{
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return dragEnteredOrUpdated(dragData);
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}
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void DragController::dragExited(const DragData& dragData)
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{
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auto& mainFrame = m_page.mainFrame();
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if (mainFrame.view())
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mainFrame.eventHandler().cancelDragAndDrop(createMouseEvent(dragData), Pasteboard::create(dragData), dragData.draggingSourceOperationMask(), dragData.containsFiles());
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mouseMovedIntoDocument(nullptr);
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if (m_fileInputElementUnderMouse)
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m_fileInputElementUnderMouse->setCanReceiveDroppedFiles(false);
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m_fileInputElementUnderMouse = nullptr;
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}
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std::optional<DragOperation> DragController::dragUpdated(const DragData& dragData)
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{
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return dragEnteredOrUpdated(dragData);
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}
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inline static bool dragIsHandledByDocument(DragHandlingMethod dragHandlingMethod)
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{
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return dragHandlingMethod != DragHandlingMethod::None && dragHandlingMethod != DragHandlingMethod::PageLoad;
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}
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bool DragController::performDragOperation(const DragData& dragData)
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{
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if (!m_droppedImagePlaceholders.isEmpty() && m_droppedImagePlaceholderRange && tryToUpdateDroppedImagePlaceholders(dragData)) {
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m_droppedImagePlaceholders.clear();
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m_droppedImagePlaceholderRange = std::nullopt;
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m_documentUnderMouse = nullptr;
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clearDragCaret();
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return true;
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}
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removeAllDroppedImagePlaceholders();
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SetForScope<bool> isPerformingDrop(m_isPerformingDrop, true);
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IgnoreSelectionChangeForScope ignoreSelectionChanges { m_page.focusController().focusedOrMainFrame() };
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m_documentUnderMouse = m_page.mainFrame().documentAtPoint(dragData.clientPosition());
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ShouldOpenExternalURLsPolicy shouldOpenExternalURLsPolicy = ShouldOpenExternalURLsPolicy::ShouldNotAllow;
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if (m_documentUnderMouse)
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shouldOpenExternalURLsPolicy = m_documentUnderMouse->shouldOpenExternalURLsPolicyToPropagate();
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if ((m_dragDestinationActionMask.contains(DragDestinationAction::DHTML)) && dragIsHandledByDocument(m_dragHandlingMethod)) {
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client().willPerformDragDestinationAction(DragDestinationAction::DHTML, dragData);
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Ref<Frame> mainFrame(m_page.mainFrame());
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bool preventedDefault = false;
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if (mainFrame->view())
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preventedDefault = mainFrame->eventHandler().performDragAndDrop(createMouseEvent(dragData), Pasteboard::create(dragData), dragData.draggingSourceOperationMask(), dragData.containsFiles());
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if (preventedDefault) {
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clearDragCaret();
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m_documentUnderMouse = nullptr;
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return true;
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}
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}
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if ((m_dragDestinationActionMask.contains(DragDestinationAction::Edit)) && concludeEditDrag(dragData)) {
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client().didConcludeEditDrag();
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m_documentUnderMouse = nullptr;
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clearDragCaret();
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return true;
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}
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m_documentUnderMouse = nullptr;
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clearDragCaret();
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if (!operationForLoad(dragData))
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return false;
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auto urlString = dragData.asURL();
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if (urlString.isEmpty())
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return false;
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client().willPerformDragDestinationAction(DragDestinationAction::Load, dragData);
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FrameLoadRequest frameLoadRequest { m_page.mainFrame(), ResourceRequest { urlString } };
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frameLoadRequest.setShouldOpenExternalURLsPolicy(shouldOpenExternalURLsPolicy);
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frameLoadRequest.setIsRequestFromClientOrUserInput();
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m_page.mainFrame().loader().load(WTFMove(frameLoadRequest));
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return true;
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}
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void DragController::mouseMovedIntoDocument(Document* newDocument)
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{
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if (m_documentUnderMouse == newDocument)
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return;
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// If we were over another document clear the selection
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if (m_documentUnderMouse)
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clearDragCaret();
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m_documentUnderMouse = newDocument;
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}
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std::optional<DragOperation> DragController::dragEnteredOrUpdated(const DragData& dragData)
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{
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mouseMovedIntoDocument(m_page.mainFrame().documentAtPoint(dragData.clientPosition()));
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m_dragDestinationActionMask = dragData.dragDestinationActionMask();
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if (m_dragDestinationActionMask.isEmpty()) {
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clearDragCaret(); // FIXME: Why not call mouseMovedIntoDocument(nullptr)?
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return std::nullopt;
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}
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std::optional<DragOperation> dragOperation;
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m_dragHandlingMethod = tryDocumentDrag(dragData, m_dragDestinationActionMask, dragOperation);
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if (m_dragHandlingMethod == DragHandlingMethod::None && (m_dragDestinationActionMask.contains(DragDestinationAction::Load))) {
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dragOperation = operationForLoad(dragData);
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if (dragOperation)
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m_dragHandlingMethod = DragHandlingMethod::PageLoad;
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} else if (m_dragHandlingMethod == DragHandlingMethod::SetColor)
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dragOperation = DragOperation::Copy;
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updateSupportedTypeIdentifiersForDragHandlingMethod(m_dragHandlingMethod, dragData);
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return dragOperation;
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}
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static HTMLInputElement* asFileInput(Node& node)
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{
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if (!is<HTMLInputElement>(node))
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return nullptr;
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auto* inputElement = &downcast<HTMLInputElement>(node);
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// If this is a button inside of the a file input, move up to the file input.
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if (inputElement->isTextButton() && is<ShadowRoot>(inputElement->treeScope().rootNode())) {
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auto& host = *downcast<ShadowRoot>(inputElement->treeScope().rootNode()).host();
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inputElement = is<HTMLInputElement>(host) ? &downcast<HTMLInputElement>(host) : nullptr;
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}
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return inputElement && inputElement->isFileUpload() ? inputElement : nullptr;
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}
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#if ENABLE(INPUT_TYPE_COLOR)
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static bool isEnabledColorInput(Node& node)
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{
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if (!is<HTMLInputElement>(node))
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return false;
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auto& input = downcast<HTMLInputElement>(node);
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return input.isColorControl() && !input.isDisabledFormControl();
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}
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static bool isInShadowTreeOfEnabledColorInput(Node& node)
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{
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auto* host = node.shadowHost();
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return host && isEnabledColorInput(*host);
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}
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#endif
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// This can return null if an empty document is loaded.
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static Element* elementUnderMouse(Document* documentUnderMouse, const IntPoint& p)
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{
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Frame* frame = documentUnderMouse->frame();
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float zoomFactor = frame ? frame->pageZoomFactor() : 1;
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LayoutPoint point(p.x() * zoomFactor, p.y() * zoomFactor);
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HitTestResult result(point);
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documentUnderMouse->hitTest(HitTestRequest(), result);
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auto* node = result.innerNode();
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if (!node)
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return nullptr;
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// FIXME: Use parentElementInComposedTree here.
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auto* element = is<Element>(*node) ? &downcast<Element>(*node) : node->parentElement();
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auto* host = element->shadowHost();
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return host ? host : element;
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}
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#if !PLATFORM(IOS_FAMILY)
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void DragController::updateSupportedTypeIdentifiersForDragHandlingMethod(DragHandlingMethod, const DragData&) const
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{
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}
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#endif
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DragHandlingMethod DragController::tryDocumentDrag(const DragData& dragData, OptionSet<DragDestinationAction> destinationActionMask, std::optional<DragOperation>& dragOperation)
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{
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if (!m_documentUnderMouse)
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return DragHandlingMethod::None;
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if (m_dragInitiator && !m_documentUnderMouse->securityOrigin().canReceiveDragData(m_dragInitiator->securityOrigin()))
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return DragHandlingMethod::None;
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bool isHandlingDrag = false;
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if (destinationActionMask.contains(DragDestinationAction::DHTML)) {
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isHandlingDrag = tryDHTMLDrag(dragData, dragOperation);
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// Do not continue if m_documentUnderMouse has been reset by tryDHTMLDrag.
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// tryDHTMLDrag fires dragenter event. The event listener that listens
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// to this event may create a nested message loop (open a modal dialog),
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// which could process dragleave event and reset m_documentUnderMouse in
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// dragExited.
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if (!m_documentUnderMouse)
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return DragHandlingMethod::None;
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}
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// It's unclear why this check is after tryDHTMLDrag.
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// We send drag events in tryDHTMLDrag and that may be the reason.
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RefPtr<FrameView> frameView = m_documentUnderMouse->view();
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if (!frameView)
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return DragHandlingMethod::None;
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if (isHandlingDrag) {
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clearDragCaret();
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m_numberOfItemsToBeAccepted = dragData.numberOfFiles();
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return DragHandlingMethod::NonDefault;
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}
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if (destinationActionMask.contains(DragDestinationAction::Edit) && canProcessDrag(dragData)) {
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if (dragData.containsColor()) {
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dragOperation = DragOperation::Generic;
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return DragHandlingMethod::SetColor;
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}
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IntPoint point = frameView->windowToContents(dragData.clientPosition());
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Element* element = elementUnderMouse(m_documentUnderMouse.get(), point);
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if (!element)
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return DragHandlingMethod::None;
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HTMLInputElement* elementAsFileInput = asFileInput(*element);
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if (m_fileInputElementUnderMouse != elementAsFileInput) {
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if (m_fileInputElementUnderMouse)
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m_fileInputElementUnderMouse->setCanReceiveDroppedFiles(false);
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m_fileInputElementUnderMouse = elementAsFileInput;
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}
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if (!m_fileInputElementUnderMouse)
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m_page.dragCaretController().setCaretPosition(m_documentUnderMouse->frame()->visiblePositionForPoint(point));
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else
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clearDragCaret();
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Frame* innerFrame = element->document().frame();
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dragOperation = dragIsMove(innerFrame->selection(), dragData) ? DragOperation::Move : DragOperation::Copy;
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unsigned numberOfFiles = dragData.numberOfFiles();
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if (m_fileInputElementUnderMouse) {
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if (m_fileInputElementUnderMouse->isDisabledFormControl())
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m_numberOfItemsToBeAccepted = 0;
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else if (m_fileInputElementUnderMouse->multiple())
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m_numberOfItemsToBeAccepted = numberOfFiles;
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else if (numberOfFiles > 1)
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m_numberOfItemsToBeAccepted = 0;
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else
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m_numberOfItemsToBeAccepted = 1;
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if (!m_numberOfItemsToBeAccepted)
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dragOperation = std::nullopt;
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m_fileInputElementUnderMouse->setCanReceiveDroppedFiles(m_numberOfItemsToBeAccepted);
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} else {
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// We are not over a file input element. The dragged item(s) will loaded into the view,
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// dropped as text paths on other input elements, or handled by script on the page.
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m_numberOfItemsToBeAccepted = numberOfFiles;
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}
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if (m_fileInputElementUnderMouse)
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return DragHandlingMethod::UploadFile;
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if (m_page.dragCaretController().isContentRichlyEditable())
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return DragHandlingMethod::EditRichText;
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return DragHandlingMethod::EditPlainText;
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}
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// We are not over an editable region. Make sure we're clearing any prior drag cursor.
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clearDragCaret();
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if (m_fileInputElementUnderMouse)
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m_fileInputElementUnderMouse->setCanReceiveDroppedFiles(false);
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m_fileInputElementUnderMouse = nullptr;
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return DragHandlingMethod::None;
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}
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OptionSet<DragSourceAction> DragController::delegateDragSourceAction(const IntPoint& rootViewPoint)
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{
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m_dragSourceAction = client().dragSourceActionMaskForPoint(rootViewPoint);
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return m_dragSourceAction;
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}
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std::optional<DragOperation> DragController::operationForLoad(const DragData& dragData)
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{
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Document* document = m_page.mainFrame().documentAtPoint(dragData.clientPosition());
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bool pluginDocumentAcceptsDrags = false;
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if (is<PluginDocument>(document)) {
|
|
const Widget* widget = downcast<PluginDocument>(*document).pluginWidget();
|
|
const PluginViewBase* pluginView = is<PluginViewBase>(widget) ? downcast<PluginViewBase>(widget) : nullptr;
|
|
|
|
if (pluginView)
|
|
pluginDocumentAcceptsDrags = pluginView->shouldAllowNavigationFromDrags();
|
|
}
|
|
|
|
if (document && (m_didInitiateDrag || (is<PluginDocument>(*document) && !pluginDocumentAcceptsDrags) || document->hasEditableStyle()))
|
|
return std::nullopt;
|
|
return dragOperation(dragData);
|
|
}
|
|
|
|
static bool setSelectionToDragCaret(Frame* frame, VisibleSelection& dragCaret, const IntPoint& point)
|
|
{
|
|
Ref<Frame> protector(*frame);
|
|
frame->selection().setSelection(dragCaret);
|
|
if (frame->selection().selection().isNone()) {
|
|
dragCaret = frame->visiblePositionForPoint(point);
|
|
frame->selection().setSelection(dragCaret);
|
|
}
|
|
return !frame->selection().isNone() && frame->selection().selection().isContentEditable();
|
|
}
|
|
|
|
bool DragController::dispatchTextInputEventFor(Frame* innerFrame, const DragData& dragData)
|
|
{
|
|
ASSERT(m_page.dragCaretController().hasCaret());
|
|
String text = m_page.dragCaretController().isContentRichlyEditable() ? emptyString() : dragData.asPlainText();
|
|
auto target = innerFrame->editor().findEventTargetFrom(m_page.dragCaretController().caretPosition());
|
|
// FIXME: What guarantees target is not null?
|
|
auto event = TextEvent::createForDrop(&innerFrame->windowProxy(), text);
|
|
target->dispatchEvent(event);
|
|
return !event->defaultPrevented();
|
|
}
|
|
|
|
bool DragController::concludeEditDrag(const DragData& dragData)
|
|
{
|
|
RefPtr<HTMLInputElement> fileInput = m_fileInputElementUnderMouse;
|
|
if (m_fileInputElementUnderMouse) {
|
|
m_fileInputElementUnderMouse->setCanReceiveDroppedFiles(false);
|
|
m_fileInputElementUnderMouse = nullptr;
|
|
}
|
|
|
|
if (!m_documentUnderMouse)
|
|
return false;
|
|
|
|
IntPoint point = m_documentUnderMouse->view()->windowToContents(dragData.clientPosition());
|
|
Element* element = elementUnderMouse(m_documentUnderMouse.get(), point);
|
|
if (!element)
|
|
return false;
|
|
RefPtr<Frame> innerFrame = element->document().frame();
|
|
ASSERT(innerFrame);
|
|
|
|
if (m_page.dragCaretController().hasCaret() && !dispatchTextInputEventFor(innerFrame.get(), dragData))
|
|
return true;
|
|
|
|
if (dragData.containsColor()) {
|
|
Color color = dragData.asColor();
|
|
if (!color.isValid())
|
|
return false;
|
|
#if ENABLE(INPUT_TYPE_COLOR)
|
|
if (isEnabledColorInput(*element)) {
|
|
auto& input = downcast<HTMLInputElement>(*element);
|
|
input.setValue(serializationForHTML(color), DispatchInputAndChangeEvent);
|
|
return true;
|
|
}
|
|
#endif
|
|
auto innerRange = innerFrame->selection().selection().toNormalizedRange();
|
|
if (!innerRange)
|
|
return false;
|
|
auto style = MutableStyleProperties::create();
|
|
style->setProperty(CSSPropertyColor, serializationForHTML(color), false);
|
|
if (!innerFrame->editor().shouldApplyStyle(style, *innerRange))
|
|
return false;
|
|
client().willPerformDragDestinationAction(DragDestinationAction::Edit, dragData);
|
|
innerFrame->editor().applyStyle(style.ptr(), EditAction::SetColor);
|
|
return true;
|
|
}
|
|
|
|
if (dragData.containsFiles() && fileInput) {
|
|
// fileInput should be the element we hit tested for, unless it was made
|
|
// display:none in a drop event handler.
|
|
ASSERT(fileInput == element || !fileInput->renderer());
|
|
if (fileInput->isDisabledFormControl())
|
|
return false;
|
|
|
|
return fileInput->receiveDroppedFiles(dragData);
|
|
}
|
|
|
|
if (!m_page.dragController().canProcessDrag(dragData))
|
|
return false;
|
|
|
|
VisibleSelection dragCaret = m_page.dragCaretController().caretPosition();
|
|
auto range = dragCaret.toNormalizedRange();
|
|
RefPtr<Element> rootEditableElement = innerFrame->selection().selection().rootEditableElement();
|
|
|
|
// For range to be null a WebKit client must have done something bad while
|
|
// manually controlling drag behaviour
|
|
if (!range)
|
|
return false;
|
|
|
|
ResourceCacheValidationSuppressor validationSuppressor(range->start.document().cachedResourceLoader());
|
|
auto& editor = innerFrame->editor();
|
|
bool isMove = dragIsMove(innerFrame->selection(), dragData);
|
|
if (isMove || dragCaret.isContentRichlyEditable()) {
|
|
bool chosePlainText = false;
|
|
auto fragment = documentFragmentFromDragData(dragData, *innerFrame, *range, true, chosePlainText);
|
|
if (!fragment || !editor.shouldInsertFragment(*fragment, range, EditorInsertAction::Dropped))
|
|
return false;
|
|
|
|
client().willPerformDragDestinationAction(DragDestinationAction::Edit, dragData);
|
|
|
|
if (editor.client() && editor.client()->performTwoStepDrop(*fragment, *range, isMove))
|
|
return true;
|
|
|
|
if (isMove) {
|
|
// NSTextView behavior is to always smart delete on moving a selection,
|
|
// but only to smart insert if the selection granularity is word granularity.
|
|
bool smartDelete = editor.smartInsertDeleteEnabled();
|
|
bool smartInsert = smartDelete && innerFrame->selection().granularity() == TextGranularity::WordGranularity && dragData.canSmartReplace();
|
|
MoveSelectionCommand::create(fragment.releaseNonNull(), dragCaret.base(), smartInsert, smartDelete)->apply();
|
|
} else {
|
|
if (setSelectionToDragCaret(innerFrame.get(), dragCaret, point)) {
|
|
OptionSet<ReplaceSelectionCommand::CommandOption> options { ReplaceSelectionCommand::SelectReplacement, ReplaceSelectionCommand::PreventNesting };
|
|
if (dragData.canSmartReplace())
|
|
options.add(ReplaceSelectionCommand::SmartReplace);
|
|
if (chosePlainText)
|
|
options.add(ReplaceSelectionCommand::MatchStyle);
|
|
ReplaceSelectionCommand::create(*m_documentUnderMouse, fragment.releaseNonNull(), options, EditAction::InsertFromDrop)->apply();
|
|
}
|
|
}
|
|
} else {
|
|
String text = dragData.asPlainText();
|
|
if (text.isEmpty() || !editor.shouldInsertText(text, *range, EditorInsertAction::Dropped))
|
|
return false;
|
|
|
|
client().willPerformDragDestinationAction(DragDestinationAction::Edit, dragData);
|
|
auto fragment = createFragmentFromText(*range, text);
|
|
if (editor.client() && editor.client()->performTwoStepDrop(fragment.get(), *range, isMove))
|
|
return true;
|
|
|
|
if (setSelectionToDragCaret(innerFrame.get(), dragCaret, point))
|
|
ReplaceSelectionCommand::create(*m_documentUnderMouse, WTFMove(fragment), { ReplaceSelectionCommand::SelectReplacement, ReplaceSelectionCommand::MatchStyle, ReplaceSelectionCommand::PreventNesting }, EditAction::InsertFromDrop)->apply();
|
|
}
|
|
|
|
if (rootEditableElement) {
|
|
if (Frame* frame = rootEditableElement->document().frame())
|
|
frame->eventHandler().updateDragStateAfterEditDragIfNeeded(*rootEditableElement);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool DragController::canProcessDrag(const DragData& dragData)
|
|
{
|
|
IntPoint point = m_page.mainFrame().view()->windowToContents(dragData.clientPosition());
|
|
HitTestResult result = HitTestResult(point);
|
|
if (!m_page.mainFrame().contentRenderer())
|
|
return false;
|
|
|
|
constexpr OptionSet<HitTestRequest::Type> hitType { HitTestRequest::Type::ReadOnly, HitTestRequest::Type::Active, HitTestRequest::Type::AllowChildFrameContent };
|
|
result = m_page.mainFrame().eventHandler().hitTestResultAtPoint(point, hitType);
|
|
|
|
auto* dragNode = result.innerNonSharedNode();
|
|
if (!dragNode)
|
|
return false;
|
|
|
|
DragData::DraggingPurpose dragPurpose = DragData::DraggingPurpose::ForEditing;
|
|
if (asFileInput(*dragNode))
|
|
dragPurpose = DragData::DraggingPurpose::ForFileUpload;
|
|
#if ENABLE(INPUT_TYPE_COLOR)
|
|
else if (isEnabledColorInput(*dragNode) || isInShadowTreeOfEnabledColorInput(*dragNode))
|
|
dragPurpose = DragData::DraggingPurpose::ForColorControl;
|
|
#endif
|
|
|
|
if (!dragData.containsCompatibleContent(dragPurpose))
|
|
return false;
|
|
|
|
if (dragPurpose == DragData::DraggingPurpose::ForFileUpload)
|
|
return true;
|
|
|
|
#if ENABLE(INPUT_TYPE_COLOR)
|
|
if (dragPurpose == DragData::DraggingPurpose::ForColorControl)
|
|
return true;
|
|
#endif
|
|
|
|
if (!dragNode->hasEditableStyle())
|
|
return false;
|
|
|
|
if (m_didInitiateDrag && m_documentUnderMouse == m_dragInitiator && result.isSelected())
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
static std::optional<DragOperation> defaultOperationForDrag(OptionSet<DragOperation> sourceOperationMask)
|
|
{
|
|
// This is designed to match IE's operation fallback for the case where
|
|
// the page calls preventDefault() in a drag event but doesn't set dropEffect.
|
|
if (sourceOperationMask.containsAll({ DragOperation::Copy, DragOperation::Link, DragOperation::Generic, DragOperation::Private, DragOperation::Move, DragOperation::Delete }))
|
|
return DragOperation::Copy;
|
|
if (sourceOperationMask.isEmpty())
|
|
return std::nullopt;
|
|
if (sourceOperationMask.contains(DragOperation::Move))
|
|
return DragOperation::Move;
|
|
if (sourceOperationMask.contains(DragOperation::Generic))
|
|
return DragController::platformGenericDragOperation();
|
|
if (sourceOperationMask.contains(DragOperation::Copy))
|
|
return DragOperation::Copy;
|
|
if (sourceOperationMask.contains(DragOperation::Link))
|
|
return DragOperation::Link;
|
|
|
|
// FIXME: Does IE really return "generic" even if no operations were allowed by the source?
|
|
return DragOperation::Generic;
|
|
}
|
|
|
|
bool DragController::tryDHTMLDrag(const DragData& dragData, std::optional<DragOperation>& operation)
|
|
{
|
|
ASSERT(m_documentUnderMouse);
|
|
Ref<Frame> mainFrame(m_page.mainFrame());
|
|
RefPtr<FrameView> viewProtector = mainFrame->view();
|
|
if (!viewProtector)
|
|
return false;
|
|
|
|
auto sourceOperationMask = dragData.draggingSourceOperationMask();
|
|
auto targetResponse = mainFrame->eventHandler().updateDragAndDrop(createMouseEvent(dragData), [&dragData]() {
|
|
return Pasteboard::create(dragData);
|
|
}, sourceOperationMask, dragData.containsFiles());
|
|
if (!targetResponse.accept)
|
|
return false;
|
|
|
|
if (!targetResponse.operationMask)
|
|
operation = defaultOperationForDrag(sourceOperationMask);
|
|
else if (!sourceOperationMask.containsAny(targetResponse.operationMask.value())) // The element picked an operation which is not supported by the source.
|
|
operation = std::nullopt;
|
|
else
|
|
operation = defaultOperationForDrag(targetResponse.operationMask.value());
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool imageElementIsDraggable(const HTMLImageElement& image, const Frame& sourceFrame)
|
|
{
|
|
if (sourceFrame.settings().loadsImagesAutomatically())
|
|
return true;
|
|
|
|
auto* renderer = image.renderer();
|
|
if (!is<RenderImage>(renderer))
|
|
return false;
|
|
|
|
auto* cachedImage = downcast<RenderImage>(*renderer).cachedImage();
|
|
return cachedImage && !cachedImage->errorOccurred() && cachedImage->imageForRenderer(renderer);
|
|
}
|
|
|
|
#if ENABLE(ATTACHMENT_ELEMENT)
|
|
|
|
static RefPtr<HTMLAttachmentElement> enclosingAttachmentElement(Element& element)
|
|
{
|
|
if (is<HTMLAttachmentElement>(element))
|
|
return downcast<HTMLAttachmentElement>(&element);
|
|
|
|
if (is<HTMLAttachmentElement>(element.parentOrShadowHostElement()))
|
|
return downcast<HTMLAttachmentElement>(element.parentOrShadowHostElement());
|
|
|
|
return { };
|
|
}
|
|
|
|
#endif
|
|
|
|
Element* DragController::draggableElement(const Frame* sourceFrame, Element* startElement, const IntPoint& dragOrigin, DragState& state) const
|
|
{
|
|
state.type = sourceFrame->selection().contains(dragOrigin) ? DragSourceAction::Selection : OptionSet<DragSourceAction>({ });
|
|
if (!startElement)
|
|
return nullptr;
|
|
|
|
#if ENABLE(ATTACHMENT_ELEMENT)
|
|
if (auto attachment = enclosingAttachmentElement(*startElement)) {
|
|
auto& selection = sourceFrame->selection().selection();
|
|
bool isSingleAttachmentSelection = selection.start() == Position(attachment.get(), Position::PositionIsBeforeAnchor) && selection.end() == Position(attachment.get(), Position::PositionIsAfterAnchor);
|
|
auto selectedRange = selection.firstRange();
|
|
if (isSingleAttachmentSelection || !selectedRange || !contains<ComposedTree>(*selectedRange, *attachment)) {
|
|
state.type = DragSourceAction::Attachment;
|
|
return attachment.get();
|
|
}
|
|
}
|
|
#endif
|
|
|
|
auto selectionDragElement = state.type.contains(DragSourceAction::Selection) && m_dragSourceAction.contains(DragSourceAction::Selection) ? startElement : nullptr;
|
|
if (HTMLElement::isImageOverlayText(startElement))
|
|
return selectionDragElement;
|
|
|
|
for (auto* element = startElement; element; element = element->parentOrShadowHostElement()) {
|
|
auto* renderer = element->renderer();
|
|
if (!renderer)
|
|
continue;
|
|
|
|
UserDrag dragMode = renderer->style().userDrag();
|
|
if (m_dragSourceAction.contains(DragSourceAction::DHTML) && dragMode == UserDrag::Element) {
|
|
state.type.add(DragSourceAction::DHTML);
|
|
return element;
|
|
}
|
|
if (dragMode == UserDrag::Auto) {
|
|
if ((m_dragSourceAction.contains(DragSourceAction::Image))
|
|
&& is<HTMLImageElement>(*element)
|
|
&& imageElementIsDraggable(downcast<HTMLImageElement>(*element), *sourceFrame)) {
|
|
state.type.add(DragSourceAction::Image);
|
|
return element;
|
|
}
|
|
if (m_dragSourceAction.contains(DragSourceAction::Link) && isDraggableLink(*element)) {
|
|
state.type.add(DragSourceAction::Link);
|
|
return element;
|
|
}
|
|
#if ENABLE(ATTACHMENT_ELEMENT)
|
|
if (m_dragSourceAction.contains(DragSourceAction::Attachment)
|
|
&& is<HTMLAttachmentElement>(*element)
|
|
&& downcast<HTMLAttachmentElement>(*element).file()) {
|
|
state.type.add(DragSourceAction::Attachment);
|
|
return element;
|
|
}
|
|
#endif
|
|
#if ENABLE(INPUT_TYPE_COLOR)
|
|
if (m_dragSourceAction.contains(DragSourceAction::Color) && isEnabledColorInput(*element)) {
|
|
state.type.add(DragSourceAction::Color);
|
|
return element;
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
|
|
// We either have nothing to drag or we have a selection and we're not over a draggable element.
|
|
return selectionDragElement;
|
|
}
|
|
|
|
static CachedImage* getCachedImage(Element& element)
|
|
{
|
|
RenderObject* renderer = element.renderer();
|
|
if (!is<RenderImage>(renderer))
|
|
return nullptr;
|
|
auto& image = downcast<RenderImage>(*renderer);
|
|
return image.cachedImage();
|
|
}
|
|
|
|
static Image* getImage(Element& element)
|
|
{
|
|
CachedImage* cachedImage = getCachedImage(element);
|
|
// Don't use cachedImage->imageForRenderer() here as that may return BitmapImages for cached SVG Images.
|
|
// Users of getImage() want access to the SVGImage, in order to figure out the filename extensions,
|
|
// which would be empty when asking the cached BitmapImages.
|
|
return (cachedImage && !cachedImage->errorOccurred()) ?
|
|
cachedImage->image() : nullptr;
|
|
}
|
|
|
|
static void selectElement(Element& element)
|
|
{
|
|
if (auto frame = element.document().frame()) {
|
|
if (auto range = makeRangeSelectingNode(element))
|
|
frame->selection().setSelection(*range);
|
|
}
|
|
}
|
|
|
|
static IntPoint dragLocForDHTMLDrag(const IntPoint& mouseDraggedPoint, const IntPoint& dragOrigin, const IntPoint& dragImageOffset, bool isLinkImage)
|
|
{
|
|
// dragImageOffset is the cursor position relative to the lower-left corner of the image.
|
|
#if PLATFORM(MAC)
|
|
// We add in the Y dimension because we are a flipped view, so adding moves the image down.
|
|
const int yOffset = dragImageOffset.y();
|
|
#else
|
|
const int yOffset = -dragImageOffset.y();
|
|
#endif
|
|
|
|
if (isLinkImage)
|
|
return IntPoint(mouseDraggedPoint.x() - dragImageOffset.x(), mouseDraggedPoint.y() + yOffset);
|
|
|
|
return IntPoint(dragOrigin.x() - dragImageOffset.x(), dragOrigin.y() + yOffset);
|
|
}
|
|
|
|
static FloatPoint dragImageAnchorPointForSelectionDrag(Frame& frame, const IntPoint& mouseDraggedPoint)
|
|
{
|
|
IntRect draggingRect = enclosingIntRect(frame.selection().selectionBounds());
|
|
|
|
float x = (mouseDraggedPoint.x() - draggingRect.x()) / (float)draggingRect.width();
|
|
float y = (mouseDraggedPoint.y() - draggingRect.y()) / (float)draggingRect.height();
|
|
|
|
return FloatPoint { x, y };
|
|
}
|
|
|
|
static IntPoint dragLocForSelectionDrag(Frame& src)
|
|
{
|
|
IntRect draggingRect = enclosingIntRect(src.selection().selectionBounds());
|
|
int xpos = draggingRect.maxX();
|
|
xpos = draggingRect.x() < xpos ? draggingRect.x() : xpos;
|
|
int ypos = draggingRect.maxY();
|
|
#if PLATFORM(COCOA)
|
|
// Deal with flipped coordinates on Mac
|
|
ypos = draggingRect.y() > ypos ? draggingRect.y() : ypos;
|
|
#else
|
|
ypos = draggingRect.y() < ypos ? draggingRect.y() : ypos;
|
|
#endif
|
|
return IntPoint(xpos, ypos);
|
|
}
|
|
|
|
void DragController::prepareForDragStart(Frame& source, OptionSet<DragSourceAction> actionMask, Element& element, DataTransfer& dataTransfer, const IntPoint& dragOrigin) const
|
|
{
|
|
#if !PLATFORM(WIN)
|
|
Ref<Frame> protector(source);
|
|
auto hitTestResult = hitTestResultForDragStart(source, element, dragOrigin);
|
|
if (!hitTestResult)
|
|
return;
|
|
|
|
auto& pasteboard = dataTransfer.pasteboard();
|
|
auto& editor = source.editor();
|
|
if (actionMask == DragSourceAction::Selection) {
|
|
if (enclosingTextFormControl(source.selection().selection().start()))
|
|
pasteboard.writePlainText(editor.selectedTextForDataTransfer(), Pasteboard::CannotSmartReplace);
|
|
else
|
|
editor.writeSelectionToPasteboard(pasteboard);
|
|
return;
|
|
}
|
|
|
|
auto* image = getImage(element);
|
|
auto imageURL = hitTestResult->absoluteImageURL();
|
|
if (actionMask.contains(DragSourceAction::Image) && !imageURL.isEmpty() && image && !image->isNull()) {
|
|
editor.writeImageToPasteboard(pasteboard, element, imageURL, { });
|
|
return;
|
|
}
|
|
|
|
auto linkURL = hitTestResult->absoluteLinkURL();
|
|
if (actionMask.contains(DragSourceAction::Link) && !linkURL.isEmpty() && source.document()->securityOrigin().canDisplay(linkURL))
|
|
editor.copyURL(linkURL, hitTestResult->textContent().simplifyWhiteSpace(), pasteboard);
|
|
#else
|
|
// FIXME: Make this work on Windows by implementing Editor::writeSelectionToPasteboard and Editor::writeImageToPasteboard.
|
|
UNUSED_PARAM(source);
|
|
UNUSED_PARAM(actionMask);
|
|
UNUSED_PARAM(element);
|
|
UNUSED_PARAM(dataTransfer);
|
|
UNUSED_PARAM(dragOrigin);
|
|
#endif
|
|
}
|
|
|
|
std::optional<HitTestResult> DragController::hitTestResultForDragStart(Frame& source, Element& element, const IntPoint& location) const
|
|
{
|
|
if (!source.view() || !source.contentRenderer())
|
|
return std::nullopt;
|
|
|
|
constexpr OptionSet<HitTestRequest::Type> hitType { HitTestRequest::Type::ReadOnly, HitTestRequest::Type::Active, HitTestRequest::Type::AllowChildFrameContent };
|
|
auto hitTestResult = source.eventHandler().hitTestResultAtPoint(location, hitType);
|
|
|
|
bool sourceContainsHitNode = element.containsIncludingShadowDOM(hitTestResult.innerNode());
|
|
if (!sourceContainsHitNode) {
|
|
// The original node being dragged isn't under the drag origin anymore... maybe it was
|
|
// hidden or moved out from under the cursor. Regardless, we don't want to start a drag on
|
|
// something that's not actually under the drag origin.
|
|
return std::nullopt;
|
|
}
|
|
|
|
return { hitTestResult };
|
|
}
|
|
|
|
bool DragController::startDrag(Frame& src, const DragState& state, OptionSet<DragOperation> sourceOperationMask, const PlatformMouseEvent& dragEvent, const IntPoint& dragOrigin, HasNonDefaultPasteboardData hasData)
|
|
{
|
|
if (!state.source)
|
|
return false;
|
|
|
|
Ref<Frame> protector(src);
|
|
auto hitTestResult = hitTestResultForDragStart(src, *state.source, dragOrigin);
|
|
if (!hitTestResult)
|
|
return false;
|
|
|
|
auto linkURL = hitTestResult->absoluteLinkURL();
|
|
auto imageURL = hitTestResult->absoluteImageURL();
|
|
|
|
IntPoint mouseDraggedPoint = src.view()->windowToContents(dragEvent.position());
|
|
|
|
m_draggingImageURL = URL();
|
|
m_sourceDragOperationMask = sourceOperationMask;
|
|
|
|
DragImage dragImage;
|
|
IntPoint dragLoc(0, 0);
|
|
IntPoint dragImageOffset(0, 0);
|
|
|
|
ASSERT(state.dataTransfer);
|
|
|
|
DataTransfer& dataTransfer = *state.dataTransfer;
|
|
if (state.type == DragSourceAction::DHTML) {
|
|
dragImage = DragImage { dataTransfer.createDragImage(dragImageOffset) };
|
|
// We allow DHTML/JS to set the drag image, even if its a link, image or text we're dragging.
|
|
// This is in the spirit of the IE API, which allows overriding of pasteboard data and DragOp.
|
|
if (dragImage) {
|
|
dragLoc = dragLocForDHTMLDrag(mouseDraggedPoint, dragOrigin, dragImageOffset, !linkURL.isEmpty());
|
|
m_dragOffset = dragImageOffset;
|
|
}
|
|
}
|
|
|
|
if (state.type == DragSourceAction::Selection || !imageURL.isEmpty() || !linkURL.isEmpty()) {
|
|
// Selection, image, and link drags receive a default set of allowed drag operations that
|
|
// follows from:
|
|
// http://trac.webkit.org/browser/trunk/WebKit/mac/WebView/WebHTMLView.mm?rev=48526#L3430
|
|
m_sourceDragOperationMask.add({ DragOperation::Generic, DragOperation::Copy });
|
|
}
|
|
|
|
ASSERT(state.source);
|
|
Element& element = *state.source;
|
|
|
|
bool mustUseLegacyDragClient = hasData == HasNonDefaultPasteboardData::Yes || client().useLegacyDragClient();
|
|
|
|
IntRect dragImageBounds;
|
|
Image* image = getImage(element);
|
|
if (state.type == DragSourceAction::Selection) {
|
|
PasteboardWriterData pasteboardWriterData;
|
|
|
|
if (hasData == HasNonDefaultPasteboardData::No) {
|
|
if (src.selection().selection().isNone()) {
|
|
// The page may have cleared out the selection in the dragstart handler, in which case we should bail
|
|
// out of the drag, since there is no content to write to the pasteboard.
|
|
return false;
|
|
}
|
|
|
|
// FIXME: This entire block is almost identical to the code in Editor::copy, and the code should be shared.
|
|
auto selectionRange = src.selection().selection().toNormalizedRange();
|
|
ASSERT(selectionRange);
|
|
|
|
src.editor().willWriteSelectionToPasteboard(*selectionRange);
|
|
auto selection = src.selection().selection();
|
|
bool shouldDragAsPlainText = enclosingTextFormControl(selection.start());
|
|
if (auto range = selection.range(); range && HTMLElement::isInsideImageOverlay(*range))
|
|
shouldDragAsPlainText = true;
|
|
|
|
if (shouldDragAsPlainText) {
|
|
if (mustUseLegacyDragClient)
|
|
dataTransfer.pasteboard().writePlainText(src.editor().selectedTextForDataTransfer(), Pasteboard::CannotSmartReplace);
|
|
else {
|
|
PasteboardWriterData::PlainText plainText;
|
|
plainText.canSmartCopyOrDelete = false;
|
|
plainText.text = src.editor().selectedTextForDataTransfer();
|
|
pasteboardWriterData.setPlainText(WTFMove(plainText));
|
|
}
|
|
} else {
|
|
if (mustUseLegacyDragClient) {
|
|
#if !PLATFORM(WIN)
|
|
src.editor().writeSelectionToPasteboard(dataTransfer.pasteboard());
|
|
#else
|
|
// FIXME: Convert Windows to match the other platforms and delete this.
|
|
dataTransfer.pasteboard().writeSelection(*selectionRange, src.editor().canSmartCopyOrDelete(), src, IncludeImageAltTextForDataTransfer);
|
|
#endif
|
|
} else {
|
|
#if PLATFORM(COCOA)
|
|
src.editor().writeSelection(pasteboardWriterData);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
src.editor().didWriteSelectionToPasteboard();
|
|
}
|
|
client().willPerformDragSourceAction(DragSourceAction::Selection, dragOrigin, dataTransfer);
|
|
if (!dragImage) {
|
|
TextIndicatorData textIndicator;
|
|
dragImage = DragImage { dissolveDragImageToFraction(createDragImageForSelection(src, textIndicator), DragImageAlpha) };
|
|
if (textIndicator.contentImage)
|
|
dragImage.setIndicatorData(textIndicator);
|
|
dragLoc = dragLocForSelectionDrag(src);
|
|
m_dragOffset = IntPoint(dragOrigin.x() - dragLoc.x(), dragOrigin.y() - dragLoc.y());
|
|
}
|
|
|
|
if (!dragImage)
|
|
return false;
|
|
|
|
if (mustUseLegacyDragClient) {
|
|
doSystemDrag(WTFMove(dragImage), dragLoc, dragOrigin, src, state, { });
|
|
return true;
|
|
}
|
|
|
|
DragItem dragItem;
|
|
dragItem.imageAnchorPoint = dragImageAnchorPointForSelectionDrag(src, mouseDraggedPoint);
|
|
dragItem.image = WTFMove(dragImage);
|
|
dragItem.data = WTFMove(pasteboardWriterData);
|
|
|
|
beginDrag(WTFMove(dragItem), src, dragOrigin, mouseDraggedPoint, dataTransfer, DragSourceAction::Selection);
|
|
|
|
return true;
|
|
}
|
|
|
|
if (!src.document()->securityOrigin().canDisplay(linkURL)) {
|
|
src.document()->addConsoleMessage(MessageSource::Security, MessageLevel::Error, "Not allowed to drag local resource: " + linkURL.stringCenterEllipsizedToLength());
|
|
return false;
|
|
}
|
|
|
|
if (!imageURL.isEmpty() && image && !image->isNull() && m_dragSourceAction.contains(DragSourceAction::Image)) {
|
|
// We shouldn't be starting a drag for an image that can't provide an extension.
|
|
// This is an early detection for problems encountered later upon drop.
|
|
ASSERT(!image->filenameExtension().isEmpty());
|
|
|
|
#if ENABLE(ATTACHMENT_ELEMENT)
|
|
auto attachmentInfo = src.editor().promisedAttachmentInfo(element);
|
|
#else
|
|
PromisedAttachmentInfo attachmentInfo;
|
|
#endif
|
|
|
|
if (hasData == HasNonDefaultPasteboardData::No) {
|
|
m_draggingImageURL = imageURL;
|
|
if (element.isContentRichlyEditable())
|
|
selectElement(element);
|
|
if (!attachmentInfo)
|
|
declareAndWriteDragImage(dataTransfer, element, !linkURL.isEmpty() ? linkURL : imageURL, hitTestResult->altDisplayString());
|
|
}
|
|
|
|
client().willPerformDragSourceAction(DragSourceAction::Image, dragOrigin, dataTransfer);
|
|
|
|
if (!dragImage)
|
|
doImageDrag(element, dragOrigin, hitTestResult->imageRect(), src, m_dragOffset, state, WTFMove(attachmentInfo));
|
|
else {
|
|
// DHTML defined drag image
|
|
doSystemDrag(WTFMove(dragImage), dragLoc, dragOrigin, src, state, WTFMove(attachmentInfo));
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
if (!linkURL.isEmpty() && m_dragSourceAction.contains(DragSourceAction::Link)) {
|
|
PasteboardWriterData pasteboardWriterData;
|
|
|
|
String textContentWithSimplifiedWhiteSpace = hitTestResult->textContent().simplifyWhiteSpace();
|
|
|
|
if (hasData == HasNonDefaultPasteboardData::No) {
|
|
// Simplify whitespace so the title put on the dataTransfer resembles what the user sees
|
|
// on the web page. This includes replacing newlines with spaces.
|
|
if (mustUseLegacyDragClient)
|
|
src.editor().copyURL(linkURL, textContentWithSimplifiedWhiteSpace, dataTransfer.pasteboard());
|
|
else
|
|
pasteboardWriterData.setURLData(src.editor().pasteboardWriterURL(linkURL, textContentWithSimplifiedWhiteSpace));
|
|
} else if (dataTransfer.pasteboard().canWriteTrustworthyWebURLsPboardType()) {
|
|
// Make sure the pasteboard also contains trustworthy link data
|
|
// but don't overwrite more general pasteboard types.
|
|
PasteboardURL pasteboardURL;
|
|
pasteboardURL.url = linkURL;
|
|
pasteboardURL.title = hitTestResult->textContent();
|
|
dataTransfer.pasteboard().writeTrustworthyWebURLsPboardType(pasteboardURL);
|
|
}
|
|
|
|
const VisibleSelection& sourceSelection = src.selection().selection();
|
|
if (sourceSelection.isCaret() && sourceSelection.isContentEditable()) {
|
|
// a user can initiate a drag on a link without having any text
|
|
// selected. In this case, we should expand the selection to
|
|
// the enclosing anchor element
|
|
Position pos = sourceSelection.base();
|
|
Node* node = enclosingAnchorElement(pos);
|
|
if (node)
|
|
src.selection().setSelection(VisibleSelection::selectionFromContentsOfNode(node));
|
|
}
|
|
|
|
client().willPerformDragSourceAction(DragSourceAction::Link, dragOrigin, dataTransfer);
|
|
if (!dragImage) {
|
|
TextIndicatorData textIndicator;
|
|
dragImage = DragImage { createDragImageForLink(element, linkURL, textContentWithSimplifiedWhiteSpace, textIndicator, src.settings().fontRenderingMode(), m_page.deviceScaleFactor()) };
|
|
if (dragImage) {
|
|
m_dragOffset = dragOffsetForLinkDragImage(dragImage.get());
|
|
dragLoc = IntPoint(dragOrigin.x() + m_dragOffset.x(), dragOrigin.y() + m_dragOffset.y());
|
|
dragImage = DragImage { platformAdjustDragImageForDeviceScaleFactor(dragImage.get(), m_page.deviceScaleFactor()) };
|
|
if (textIndicator.contentImage)
|
|
dragImage.setIndicatorData(textIndicator);
|
|
}
|
|
}
|
|
|
|
if (mustUseLegacyDragClient) {
|
|
doSystemDrag(WTFMove(dragImage), dragLoc, dragOrigin, src, state, { });
|
|
return true;
|
|
}
|
|
|
|
DragItem dragItem;
|
|
dragItem.imageAnchorPoint = dragImage ? anchorPointForLinkDragImage(dragImage.get()) : FloatPoint();
|
|
dragItem.image = WTFMove(dragImage);
|
|
dragItem.data = WTFMove(pasteboardWriterData);
|
|
|
|
beginDrag(WTFMove(dragItem), src, dragOrigin, mouseDraggedPoint, dataTransfer, DragSourceAction::Selection);
|
|
|
|
return true;
|
|
}
|
|
|
|
#if ENABLE(ATTACHMENT_ELEMENT)
|
|
if (is<HTMLAttachmentElement>(element) && m_dragSourceAction.contains(DragSourceAction::Attachment)) {
|
|
auto& attachment = downcast<HTMLAttachmentElement>(element);
|
|
auto* attachmentRenderer = attachment.renderer();
|
|
|
|
src.editor().setIgnoreSelectionChanges(true);
|
|
auto previousSelection = src.selection().selection();
|
|
selectElement(element);
|
|
|
|
PromisedAttachmentInfo promisedAttachment;
|
|
if (hasData == HasNonDefaultPasteboardData::No) {
|
|
auto& editor = src.editor();
|
|
promisedAttachment = editor.promisedAttachmentInfo(attachment);
|
|
#if PLATFORM(COCOA)
|
|
if (!promisedAttachment && editor.client()) {
|
|
// Otherwise, if no file URL is specified, call out to the injected bundle to populate the pasteboard with data.
|
|
editor.willWriteSelectionToPasteboard(src.selection().selection().toNormalizedRange());
|
|
editor.writeSelectionToPasteboard(dataTransfer.pasteboard());
|
|
editor.didWriteSelectionToPasteboard();
|
|
}
|
|
#endif
|
|
}
|
|
|
|
client().willPerformDragSourceAction(DragSourceAction::Attachment, dragOrigin, dataTransfer);
|
|
|
|
if (!dragImage) {
|
|
TextIndicatorData textIndicator;
|
|
if (attachmentRenderer)
|
|
attachmentRenderer->setShouldDrawBorder(false);
|
|
dragImage = DragImage { dissolveDragImageToFraction(createDragImageForSelection(src, textIndicator), DragImageAlpha) };
|
|
if (attachmentRenderer)
|
|
attachmentRenderer->setShouldDrawBorder(true);
|
|
if (textIndicator.contentImage)
|
|
dragImage.setIndicatorData(textIndicator);
|
|
dragLoc = dragLocForSelectionDrag(src);
|
|
m_dragOffset = IntPoint(dragOrigin.x() - dragLoc.x(), dragOrigin.y() - dragLoc.y());
|
|
}
|
|
doSystemDrag(WTFMove(dragImage), dragLoc, dragOrigin, src, state, WTFMove(promisedAttachment));
|
|
if (!element.isContentRichlyEditable())
|
|
src.selection().setSelection(previousSelection);
|
|
src.editor().setIgnoreSelectionChanges(false);
|
|
return true;
|
|
}
|
|
#endif
|
|
|
|
#if ENABLE(INPUT_TYPE_COLOR)
|
|
bool isColorControl = is<HTMLInputElement>(state.source) && downcast<HTMLInputElement>(*state.source).isColorControl();
|
|
if (isColorControl && m_dragSourceAction.contains(DragSourceAction::Color)) {
|
|
auto& input = downcast<HTMLInputElement>(*state.source);
|
|
auto color = input.valueAsColor();
|
|
|
|
Path visiblePath;
|
|
dragImage = DragImage { createDragImageForColor(color, input.boundsInRootViewSpace(), input.document().page()->pageScaleFactor(), visiblePath) };
|
|
dragImage.setVisiblePath(visiblePath);
|
|
dataTransfer.pasteboard().write(color);
|
|
dragImageOffset = IntPoint { dragImageSize(dragImage.get()) };
|
|
dragLoc = dragLocForDHTMLDrag(mouseDraggedPoint, dragOrigin, dragImageOffset, false);
|
|
|
|
client().willPerformDragSourceAction(DragSourceAction::Color, dragOrigin, dataTransfer);
|
|
doSystemDrag(WTFMove(dragImage), dragLoc, dragOrigin, src, state, { });
|
|
return true;
|
|
}
|
|
#endif
|
|
|
|
if (state.type == DragSourceAction::DHTML && dragImage) {
|
|
ASSERT(m_dragSourceAction.contains(DragSourceAction::DHTML));
|
|
client().willPerformDragSourceAction(DragSourceAction::DHTML, dragOrigin, dataTransfer);
|
|
doSystemDrag(WTFMove(dragImage), dragLoc, dragOrigin, src, state, { });
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void DragController::doImageDrag(Element& element, const IntPoint& dragOrigin, const IntRect& layoutRect, Frame& frame, IntPoint& dragImageOffset, const DragState& state, PromisedAttachmentInfo&& attachmentInfo)
|
|
{
|
|
IntPoint mouseDownPoint = dragOrigin;
|
|
DragImage dragImage;
|
|
IntPoint scaledOrigin;
|
|
|
|
if (!element.renderer())
|
|
return;
|
|
|
|
ImageOrientation orientation = element.renderer()->imageOrientation();
|
|
|
|
Image* image = getImage(element);
|
|
if (image && !layoutRect.isEmpty() && shouldUseCachedImageForDragImage(*image) && (dragImage = DragImage { createDragImageFromImage(image, orientation) })) {
|
|
dragImage = DragImage { fitDragImageToMaxSize(dragImage.get(), layoutRect.size(), maxDragImageSize()) };
|
|
IntSize fittedSize = dragImageSize(dragImage.get());
|
|
|
|
dragImage = DragImage { platformAdjustDragImageForDeviceScaleFactor(dragImage.get(), m_page.deviceScaleFactor()) };
|
|
dragImage = DragImage { dissolveDragImageToFraction(dragImage.get(), DragImageAlpha) };
|
|
|
|
// Properly orient the drag image and orient it differently if it's smaller than the original.
|
|
float scale = fittedSize.width() / (float)layoutRect.width();
|
|
float dx = scale * (layoutRect.x() - mouseDownPoint.x());
|
|
float originY = layoutRect.y();
|
|
#if PLATFORM(COCOA)
|
|
// Compensate for accursed flipped coordinates in Cocoa.
|
|
originY += layoutRect.height();
|
|
#endif
|
|
float dy = scale * (originY - mouseDownPoint.y());
|
|
scaledOrigin = IntPoint((int)(dx + 0.5), (int)(dy + 0.5));
|
|
} else {
|
|
if (CachedImage* cachedImage = getCachedImage(element)) {
|
|
dragImage = DragImage { createDragImageIconForCachedImageFilename(cachedImage->response().suggestedFilename()) };
|
|
if (dragImage) {
|
|
dragImage = DragImage { platformAdjustDragImageForDeviceScaleFactor(dragImage.get(), m_page.deviceScaleFactor()) };
|
|
scaledOrigin = IntPoint(DragIconRightInset - dragImageSize(dragImage.get()).width(), DragIconBottomInset);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!dragImage)
|
|
return;
|
|
|
|
dragImageOffset = mouseDownPoint + scaledOrigin;
|
|
doSystemDrag(WTFMove(dragImage), dragImageOffset, dragOrigin, frame, state, WTFMove(attachmentInfo));
|
|
}
|
|
|
|
void DragController::beginDrag(DragItem dragItem, Frame& frame, const IntPoint& mouseDownPoint, const IntPoint& mouseDraggedPoint, DataTransfer& dataTransfer, DragSourceAction dragSourceAction)
|
|
{
|
|
ASSERT(!client().useLegacyDragClient());
|
|
|
|
m_didInitiateDrag = true;
|
|
m_dragInitiator = frame.document();
|
|
|
|
// Protect this frame and view, as a load may occur mid drag and attempt to unload this frame
|
|
Ref<Frame> mainFrameProtector(m_page.mainFrame());
|
|
RefPtr<FrameView> viewProtector = mainFrameProtector->view();
|
|
|
|
auto mouseDownPointInRootViewCoordinates = viewProtector->rootViewToContents(frame.view()->contentsToRootView(mouseDownPoint));
|
|
auto mouseDraggedPointInRootViewCoordinates = viewProtector->rootViewToContents(frame.view()->contentsToRootView(mouseDraggedPoint));
|
|
|
|
client().beginDrag(WTFMove(dragItem), frame, mouseDownPointInRootViewCoordinates, mouseDraggedPointInRootViewCoordinates, dataTransfer, dragSourceAction);
|
|
}
|
|
|
|
static RefPtr<Element> containingLinkElement(Element& element)
|
|
{
|
|
for (auto& currentElement : lineageOfType<Element>(element)) {
|
|
if (currentElement.isLink())
|
|
return ¤tElement;
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
void DragController::doSystemDrag(DragImage image, const IntPoint& dragLoc, const IntPoint& eventPos, Frame& frame, const DragState& state, PromisedAttachmentInfo&& promisedAttachmentInfo)
|
|
{
|
|
m_didInitiateDrag = true;
|
|
m_dragInitiator = frame.document();
|
|
// Protect this frame and view, as a load may occur mid drag and attempt to unload this frame
|
|
Ref<Frame> frameProtector(m_page.mainFrame());
|
|
RefPtr<FrameView> viewProtector = frameProtector->view();
|
|
|
|
DragItem item;
|
|
item.image = WTFMove(image);
|
|
ASSERT(state.type.hasExactlyOneBitSet());
|
|
item.sourceAction = state.type.toSingleValue();
|
|
item.promisedAttachmentInfo = WTFMove(promisedAttachmentInfo);
|
|
|
|
auto eventPositionInRootViewCoordinates = frame.view()->contentsToRootView(eventPos);
|
|
auto dragLocationInRootViewCoordinates = frame.view()->contentsToRootView(dragLoc);
|
|
item.eventPositionInContentCoordinates = viewProtector->rootViewToContents(eventPositionInRootViewCoordinates);
|
|
item.dragLocationInContentCoordinates = viewProtector->rootViewToContents(dragLocationInRootViewCoordinates);
|
|
item.dragLocationInWindowCoordinates = viewProtector->contentsToWindow(item.dragLocationInContentCoordinates);
|
|
if (auto element = state.source) {
|
|
auto dataTransferImageElement = state.dataTransfer->dragImageElement();
|
|
if (state.type == DragSourceAction::DHTML) {
|
|
// If the drag image has been customized, fall back to positioning the preview relative to the drag event location.
|
|
IntSize dragPreviewSize;
|
|
if (dataTransferImageElement)
|
|
dragPreviewSize = dataTransferImageElement->boundsInRootViewSpace().size();
|
|
else {
|
|
dragPreviewSize = dragImageSize(item.image.get());
|
|
if (auto* page = frame.page())
|
|
dragPreviewSize.scale(1 / page->deviceScaleFactor());
|
|
}
|
|
item.dragPreviewFrameInRootViewCoordinates = { dragLocationInRootViewCoordinates, WTFMove(dragPreviewSize) };
|
|
} else {
|
|
// We can position the preview using the bounds of the drag source element.
|
|
item.dragPreviewFrameInRootViewCoordinates = element->boundsInRootViewSpace();
|
|
}
|
|
|
|
if (auto link = containingLinkElement(*element)) {
|
|
auto titleAttribute = link->attributeWithoutSynchronization(HTMLNames::titleAttr);
|
|
item.title = titleAttribute.isEmpty() ? link->innerText() : titleAttribute.string();
|
|
item.url = frame.document()->completeURL(stripLeadingAndTrailingHTMLSpaces(link->getAttribute(HTMLNames::hrefAttr)));
|
|
}
|
|
}
|
|
client().startDrag(WTFMove(item), *state.dataTransfer, frameProtector.get());
|
|
// DragClient::startDrag can cause our Page to dispear, deallocating |this|.
|
|
if (!frameProtector->page())
|
|
return;
|
|
|
|
cleanupAfterSystemDrag();
|
|
}
|
|
|
|
void DragController::removeAllDroppedImagePlaceholders()
|
|
{
|
|
m_droppedImagePlaceholderRange = std::nullopt;
|
|
for (auto& placeholder : std::exchange(m_droppedImagePlaceholders, { })) {
|
|
if (placeholder->isConnected())
|
|
placeholder->remove();
|
|
}
|
|
}
|
|
|
|
bool DragController::tryToUpdateDroppedImagePlaceholders(const DragData& dragData)
|
|
{
|
|
ASSERT(!m_droppedImagePlaceholders.isEmpty());
|
|
ASSERT(m_droppedImagePlaceholderRange);
|
|
|
|
auto document = makeRef(m_droppedImagePlaceholders[0]->document());
|
|
auto frame = makeRefPtr(document->frame());
|
|
if (!frame)
|
|
return false;
|
|
|
|
WebContentReader reader(*frame, *m_droppedImagePlaceholderRange, true);
|
|
auto pasteboard = Pasteboard::create(dragData);
|
|
pasteboard->read(reader);
|
|
|
|
if (!reader.fragment)
|
|
return false;
|
|
|
|
Vector<Ref<HTMLImageElement>> imageElements;
|
|
for (auto& imageElement : descendantsOfType<HTMLImageElement>(*reader.fragment))
|
|
imageElements.append(imageElement);
|
|
|
|
if (imageElements.size() != m_droppedImagePlaceholders.size()) {
|
|
ASSERT_NOT_REACHED();
|
|
return false;
|
|
}
|
|
|
|
for (size_t i = 0; i < imageElements.size(); ++i) {
|
|
auto& imageElement = imageElements[i];
|
|
auto& placeholder = m_droppedImagePlaceholders[i];
|
|
placeholder->setAttributeWithoutSynchronization(HTMLNames::srcAttr, imageElement->attributeWithoutSynchronization(HTMLNames::srcAttr));
|
|
#if ENABLE(ATTACHMENT_ELEMENT)
|
|
if (auto attachment = imageElement->attachmentElement())
|
|
placeholder->setAttachmentElement(attachment.releaseNonNull());
|
|
#endif
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void DragController::insertDroppedImagePlaceholdersAtCaret(const Vector<IntSize>& imageSizes)
|
|
{
|
|
auto& caretController = m_page.dragCaretController();
|
|
if (!caretController.isContentRichlyEditable())
|
|
return;
|
|
|
|
auto dropCaret = caretController.caretPosition();
|
|
if (dropCaret.isNull())
|
|
return;
|
|
|
|
auto document = makeRefPtr(dropCaret.deepEquivalent().document());
|
|
if (!document)
|
|
return;
|
|
|
|
auto frame = makeRefPtr(document->frame());
|
|
if (!frame)
|
|
return;
|
|
|
|
IgnoreSelectionChangeForScope selectionChange { *frame };
|
|
|
|
auto fragment = DocumentFragment::create(*document);
|
|
for (auto& size : imageSizes) {
|
|
ASSERT(!size.isEmpty());
|
|
auto image = HTMLImageElement::create(*document);
|
|
image->setAttributeWithoutSynchronization(HTMLNames::widthAttr, AtomString::number(size.width()));
|
|
image->setAttributeWithoutSynchronization(HTMLNames::heightAttr, AtomString::number(size.height()));
|
|
image->setInlineStyleProperty(CSSPropertyMaxWidth, 100, CSSUnitType::CSS_PERCENTAGE);
|
|
image->setInlineStyleProperty(CSSPropertyBackgroundColor, serializationForCSS(Color::black.colorWithAlphaByte(13)));
|
|
image->setIsDroppedImagePlaceholder();
|
|
fragment->appendChild(WTFMove(image));
|
|
}
|
|
|
|
frame->selection().setSelection(dropCaret);
|
|
|
|
auto command = ReplaceSelectionCommand::create(*document, WTFMove(fragment), { ReplaceSelectionCommand::PreventNesting, ReplaceSelectionCommand::SmartReplace }, EditAction::InsertFromDrop);
|
|
command->apply();
|
|
|
|
auto insertedContentRange = command->insertedContentRange();
|
|
if (!insertedContentRange) {
|
|
ASSERT_NOT_REACHED();
|
|
return;
|
|
}
|
|
|
|
auto container = commonInclusiveAncestor<ComposedTree>(*insertedContentRange);
|
|
if (!is<ContainerNode>(container)) {
|
|
ASSERT_NOT_REACHED();
|
|
return;
|
|
}
|
|
|
|
Vector<Ref<HTMLImageElement>> placeholders;
|
|
for (auto& placeholder : descendantsOfType<HTMLImageElement>(downcast<ContainerNode>(*container))) {
|
|
if (intersects<ComposedTree>(*insertedContentRange, placeholder))
|
|
placeholders.append(placeholder);
|
|
}
|
|
|
|
if (placeholders.size() != imageSizes.size()) {
|
|
ASSERT_NOT_REACHED();
|
|
return;
|
|
}
|
|
|
|
for (size_t i = 0; i < placeholders.size(); ++i) {
|
|
auto& placeholder = placeholders[i];
|
|
auto imageSize = imageSizes[i];
|
|
double clientWidth = placeholder->clientWidth();
|
|
double heightRespectingAspectRatio = (imageSize.height() * clientWidth) / imageSize.width();
|
|
placeholder->setAttributeWithoutSynchronization(HTMLNames::heightAttr, AtomString::number(heightRespectingAspectRatio));
|
|
}
|
|
|
|
document->updateLayout();
|
|
|
|
m_droppedImagePlaceholders = WTFMove(placeholders);
|
|
m_droppedImagePlaceholderRange = WTFMove(insertedContentRange);
|
|
|
|
frame->selection().clear();
|
|
caretController.setCaretPosition(makeDeprecatedLegacyPosition(m_droppedImagePlaceholderRange->start));
|
|
}
|
|
|
|
void DragController::finalizeDroppedImagePlaceholder(HTMLImageElement& placeholder, CompletionHandler<void()>&& completion)
|
|
{
|
|
placeholder.document().eventLoop().queueTask(TaskSource::InternalAsyncTask, [completion = WTFMove(completion), placeholder = makeRefPtr(placeholder)] () mutable {
|
|
if (placeholder->isDroppedImagePlaceholder()) {
|
|
placeholder->removeAttribute(HTMLNames::heightAttr);
|
|
placeholder->removeInlineStyleProperty(CSSPropertyBackgroundColor);
|
|
}
|
|
completion();
|
|
});
|
|
}
|
|
|
|
// Manual drag caret manipulation
|
|
void DragController::placeDragCaret(const IntPoint& windowPoint)
|
|
{
|
|
mouseMovedIntoDocument(m_page.mainFrame().documentAtPoint(windowPoint));
|
|
if (!m_documentUnderMouse)
|
|
return;
|
|
Frame* frame = m_documentUnderMouse->frame();
|
|
FrameView* frameView = frame->view();
|
|
if (!frameView)
|
|
return;
|
|
IntPoint framePoint = frameView->windowToContents(windowPoint);
|
|
|
|
m_page.dragCaretController().setCaretPosition(frame->visiblePositionForPoint(framePoint));
|
|
}
|
|
|
|
bool DragController::shouldUseCachedImageForDragImage(const Image& image) const
|
|
{
|
|
#if PLATFORM(IOS_FAMILY)
|
|
UNUSED_PARAM(image);
|
|
return true;
|
|
#else
|
|
return image.size().height() * image.size().width() <= MaxOriginalImageArea;
|
|
#endif
|
|
}
|
|
|
|
#endif // ENABLE(DRAG_SUPPORT)
|
|
|
|
} // namespace WebCore
|