mirror of
https://github.com/LadybirdBrowser/ladybird
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cfe7ddc805
This allows dragging elements on the page and dropping them onto other elements. This does not yet support dragging text. The test added here is manual; the WPT tests rely heavily on WebDriver actions.
70 lines
2.8 KiB
C++
70 lines
2.8 KiB
C++
/*
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* Copyright (c) 2024-2026, Tim Flynn <trflynn89@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/RefPtr.h>
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#include <LibGC/Ptr.h>
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#include <LibJS/Heap/Cell.h>
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#include <LibWeb/Forward.h>
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#include <LibWeb/HTML/DragDataStore.h>
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#include <LibWeb/Page/EventResult.h>
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#include <LibWeb/PixelUnits.h>
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namespace Web {
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class DragAndDropEventHandler {
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public:
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void visit_edges(JS::Cell::Visitor& visitor) const;
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bool has_ongoing_drag_and_drop_operation() const { return !m_drag_data_store.is_null(); }
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EventResult handle_drag_start(JS::Realm&, GC::Ptr<DOM::Node> drag_target, CSSPixelPoint screen_position, CSSPixelPoint page_offset, CSSPixelPoint client_offset, CSSPixelPoint offset, unsigned button, unsigned buttons, unsigned modifiers, Vector<HTML::SelectedFile> files);
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EventResult handle_drag_move(JS::Realm&, GC::Ref<DOM::Node>, CSSPixelPoint screen_position, CSSPixelPoint page_offset, CSSPixelPoint client_offset, CSSPixelPoint offset, unsigned button, unsigned buttons, unsigned modifiers);
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EventResult handle_drag_leave(JS::Realm&, CSSPixelPoint screen_position, CSSPixelPoint page_offset, CSSPixelPoint client_offset, CSSPixelPoint offset, unsigned button, unsigned buttons, unsigned modifiers);
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EventResult handle_drop(JS::Realm&, CSSPixelPoint screen_position, CSSPixelPoint page_offset, CSSPixelPoint client_offset, CSSPixelPoint offset, unsigned button, unsigned buttons, unsigned modifiers);
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private:
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enum class Cancelled {
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No,
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Yes,
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};
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EventResult handle_drag_end(JS::Realm&, Cancelled, CSSPixelPoint screen_position, CSSPixelPoint page_offset, CSSPixelPoint client_offset, CSSPixelPoint offset, unsigned button, unsigned buttons, unsigned modifiers);
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GC::Ref<HTML::DragEvent> fire_a_drag_and_drop_event(
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JS::Realm&,
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GC::Ptr<DOM::EventTarget> target,
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FlyString const& name,
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CSSPixelPoint screen_position,
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CSSPixelPoint page_offset,
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CSSPixelPoint client_offset,
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CSSPixelPoint offset,
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unsigned button,
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unsigned buttons,
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unsigned modifiers,
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GC::Ptr<DOM::EventTarget> related_target = nullptr);
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bool allow_text_drop(GC::Ref<DOM::Node>) const;
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void reset();
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RefPtr<HTML::DragDataStore> m_drag_data_store;
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// https://html.spec.whatwg.org/multipage/dnd.html#source-node
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GC::Ptr<DOM::EventTarget> m_source_node;
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// https://html.spec.whatwg.org/multipage/dnd.html#immediate-user-selection
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GC::Ptr<DOM::Node> m_immediate_user_selection;
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// https://html.spec.whatwg.org/multipage/dnd.html#current-target-element
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GC::Ptr<DOM::Node> m_current_target_element;
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// https://html.spec.whatwg.org/multipage/dnd.html#current-drag-operation
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FlyString m_current_drag_operation;
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};
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}
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