/* * Copyright (C) 2007, 2009, 2010 Apple Inc. All rights reserved. * Copyright (C) 2008 Google Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "third_party/blink/renderer/core/page/drag_controller.h" #include <memory> #include "base/memory/scoped_refptr.h" #include "build/build_config.h" #include "third_party/blink/public/common/page/drag_operation.h" #include "third_party/blink/public/mojom/frame/user_activation_notification_type.mojom-blink.h" #include "third_party/blink/public/platform/web_common.h" #include "third_party/blink/public/platform/web_drag_data.h" #include "third_party/blink/renderer/core/clipboard/data_object.h" #include "third_party/blink/renderer/core/clipboard/data_transfer.h" #include "third_party/blink/renderer/core/clipboard/data_transfer_access_policy.h" #include "third_party/blink/renderer/core/dom/document.h" #include "third_party/blink/renderer/core/dom/document_fragment.h" #include "third_party/blink/renderer/core/dom/element.h" #include "third_party/blink/renderer/core/dom/node.h" #include "third_party/blink/renderer/core/dom/node_computed_style.h" #include "third_party/blink/renderer/core/dom/shadow_root.h" #include "third_party/blink/renderer/core/dom/text.h" #include "third_party/blink/renderer/core/editing/commands/drag_and_drop_command.h" #include "third_party/blink/renderer/core/editing/drag_caret.h" #include "third_party/blink/renderer/core/editing/editing_utilities.h" #include "third_party/blink/renderer/core/editing/editor.h" #include "third_party/blink/renderer/core/editing/ephemeral_range.h" #include "third_party/blink/renderer/core/editing/frame_selection.h" #include "third_party/blink/renderer/core/editing/selection_template.h" #include "third_party/blink/renderer/core/editing/serializers/serialization.h" #include "third_party/blink/renderer/core/events/text_event.h" #include "third_party/blink/renderer/core/frame/local_dom_window.h" #include "third_party/blink/renderer/core/frame/local_frame.h" #include "third_party/blink/renderer/core/frame/local_frame_view.h" #include "third_party/blink/renderer/core/frame/settings.h" #include "third_party/blink/renderer/core/frame/visual_viewport.h" #include "third_party/blink/renderer/core/html/forms/html_form_element.h" #include "third_party/blink/renderer/core/html/forms/html_input_element.h" #include "third_party/blink/renderer/core/html/html_anchor_element.h" #include "third_party/blink/renderer/core/html/html_plugin_element.h" #include "third_party/blink/renderer/core/html/plugin_document.h" #include "third_party/blink/renderer/core/input/event_handler.h" #include "third_party/blink/renderer/core/input_type_names.h" #include "third_party/blink/renderer/core/layout/hit_test_request.h" #include "third_party/blink/renderer/core/layout/hit_test_result.h" #include "third_party/blink/renderer/core/layout/layout_image.h" #include "third_party/blink/renderer/core/layout/layout_theme.h" #include "third_party/blink/renderer/core/layout/layout_view.h" #include "third_party/blink/renderer/core/loader/frame_load_request.h" #include "third_party/blink/renderer/core/loader/frame_loader.h" #include "third_party/blink/renderer/core/loader/resource/image_resource_content.h" #include "third_party/blink/renderer/core/page/chrome_client.h" #include "third_party/blink/renderer/core/page/drag_data.h" #include "third_party/blink/renderer/core/page/drag_image.h" #include "third_party/blink/renderer/core/page/drag_state.h" #include "third_party/blink/renderer/core/page/page.h" #include "third_party/blink/renderer/platform/bindings/exception_state.h" #include "third_party/blink/renderer/platform/graphics/image.h" #include "third_party/blink/renderer/platform/graphics/image_orientation.h" #include "third_party/blink/renderer/platform/graphics/paint/paint_record_builder.h" #include "third_party/blink/renderer/platform/heap/garbage_collected.h" #include "third_party/blink/renderer/platform/loader/fetch/resource_fetcher.h" #include "third_party/blink/renderer/platform/loader/fetch/resource_request.h" #include "third_party/blink/renderer/platform/weborigin/security_origin.h" #include "third_party/blink/renderer/platform/wtf/shared_buffer.h" #include "ui/base/dragdrop/mojom/drag_drop_types.mojom-blink.h" #include "ui/display/screen_info.h" #include "ui/gfx/geometry/point_conversions.h" #include "ui/gfx/geometry/rect.h" #include "ui/gfx/geometry/rect_conversions.h" #include "ui/gfx/geometry/size.h" #include "ui/gfx/geometry/vector2d_conversions.h" #if BUILDFLAG(IS_WIN) #include <windows.h> #endif namespace blink { FormControlType; DragOperation; static const int kMaxOriginalImageArea = …; static const int kLinkDragBorderInset = …; #if BUILDFLAG(IS_ANDROID) // Android handles drag image transparency at the browser level static const float kDragImageAlpha = 1.00f; #else static const float kDragImageAlpha = …; #endif #if DCHECK_IS_ON() static bool DragTypeIsValid(DragSourceAction action) { … } #endif // DCHECK_IS_ON() static WebMouseEvent CreateMouseEvent(DragData* drag_data) { … } static DataTransfer* CreateDraggingDataTransfer(DataTransferAccessPolicy policy, DragData* drag_data) { … } DragController::DragController(Page* page) : … { … } static DocumentFragment* DocumentFragmentFromDragData( DragData* drag_data, LocalFrame* frame, Range* context, bool allow_plain_text, DragSourceType& drag_source_type, bool is_richly_editable_position) { … } bool DragController::DragIsMove(FrameSelection& selection, DragData* drag_data) { … } void DragController::ClearDragCaret() { … } void DragController::DragEnded() { … } void DragController::DragExited(DragData* drag_data, LocalFrame& local_root) { … } void DragController::PerformDrag(DragData* drag_data, LocalFrame& local_root) { … } void DragController::MouseMovedIntoDocument(Document* new_document) { … } DragController::Operation DragController::DragEnteredOrUpdated( DragData* drag_data, LocalFrame& local_root) { … } static HTMLInputElement* AsFileInput(Node* node) { … } // This can return null if an empty document is loaded. static Element* ElementUnderMouse(Document* document_under_mouse, const PhysicalOffset& point) { … } bool DragController::TryDocumentDrag(DragData* drag_data, DragDestinationAction action_mask, DragOperation& drag_operation, LocalFrame& local_root) { … } DragOperation DragController::OperationForLoad(DragData* drag_data, LocalFrame& local_root) { … } // Returns true if node at |point| is editable with populating |dragCaret| and // |range|, otherwise returns false. static bool SetSelectionToDragCaret(LocalFrame* frame, const SelectionInDOMTree& drag_caret, Range*& range, const PhysicalOffset& point) { … } DispatchEventResult DragController::DispatchTextInputEventFor( LocalFrame* inner_frame, DragData* drag_data) { … } bool DragController::ConcludeEditDrag(DragData* drag_data) { … } bool DragController::CanProcessDrag(DragData* drag_data, LocalFrame& local_root) { … } static DragOperation DefaultOperationForDrag(DragOperationsMask src_op_mask) { … } bool DragController::TryDHTMLDrag(DragData* drag_data, DragOperation& operation, LocalFrame& local_root) { … } bool SelectTextInsteadOfDrag(const Node& node) { … } Node* DragController::DraggableNode(const LocalFrame* src, Node* start_node, const gfx::Point& drag_origin, SelectionDragPolicy selection_drag_policy, DragSourceAction& drag_type) const { … } static void PrepareDataTransferForImageDrag(LocalFrame* source, DataTransfer* data_transfer, Element* node, const KURL& link_url, const KURL& image_url, const String& label) { … } bool DragController::PopulateDragDataTransfer(LocalFrame* src, const DragState& state, const gfx::Point& drag_origin) { … } namespace { gfx::Point DragLocationForDHTMLDrag(const gfx::Point& mouse_dragged_point, const gfx::Point& drag_initiation_location, const gfx::Point& drag_image_offset, bool is_link_image) { … } gfx::Rect DragRectForSelectionDrag(const LocalFrame& frame) { … } const gfx::Size MaxDragImageSize(float device_scale_factor) { … } bool CanDragImage(const Element& element) { … } std::unique_ptr<DragImage> DragImageForImage( const Element& element, float device_scale_factor, const gfx::Size& image_element_size_in_pixels) { … } gfx::Rect DragRectForImage(const DragImage* drag_image, const gfx::Point& drag_initiation_location, const gfx::Point& image_element_location, const gfx::Size& image_element_size_in_pixels) { … } std::unique_ptr<DragImage> DragImageForLink(const KURL& link_url, const String& link_text, float device_scale_factor) { … } gfx::Rect DragRectForLink(const DragImage* link_image, const gfx::Point& origin, float device_scale_factor, float page_scale_factor) { … } } // namespace // static gfx::RectF DragController::ClippedSelection(const LocalFrame& frame) { … } // static std::unique_ptr<DragImage> DragController::DragImageForSelection( LocalFrame& frame, float opacity) { … } namespace { void SelectEnclosingAnchorIfContentEditable(LocalFrame* frame) { … } std::unique_ptr<DragImage> DetermineDragImageAndRect( gfx::Rect& drag_obj_rect, gfx::Point& effective_drag_initiation_location, LocalFrame* frame, const DragState& state, const HitTestResult& hit_test_result, const gfx::Point& drag_initiation_location, const gfx::Point& mouse_dragged_point) { … } } // namespace bool DragController::StartDrag(LocalFrame* frame, const DragState& state, const WebMouseEvent& drag_event, const gfx::Point& drag_initiation_location) { … } void DragController::DoSystemDrag(DragImage* image, const gfx::Rect& drag_obj_rect, const gfx::Point& drag_initiation_location, DataTransfer* data_transfer, LocalFrame* frame) { … } DragOperation DragController::GetDragOperation(DragData* drag_data) { … } bool DragController::IsCopyKeyDown(DragData* drag_data) { … } DragState& DragController::GetDragState() { … } void DragController::ContextDestroyed() { … } void DragController::Trace(Visitor* visitor) const { … } } // namespace blink
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