DragAndDropHandler.h [plain text]
#pragma once
#if ENABLE(DRAG_SUPPORT)
#include <WebCore/DragActions.h>
#include <WebCore/IntPoint.h>
#include <WebCore/SelectionData.h>
#include <gtk/gtk.h>
#include <wtf/HashMap.h>
#include <wtf/Noncopyable.h>
#include <wtf/glib/GRefPtr.h>
typedef struct _GdkDragContext GdkDragContext;
typedef struct _GtkSelectionData GtkSelectionData;
namespace WebCore {
class DragData;
class SelectionData;
}
namespace WebKit {
class ShareableBitmap;
class WebPageProxy;
class DragAndDropHandler {
WTF_MAKE_NONCOPYABLE(DragAndDropHandler);
public:
DragAndDropHandler(WebPageProxy&);
void startDrag(Ref<WebCore::SelectionData>&&, WebCore::DragOperation, RefPtr<ShareableBitmap>&& dragImage);
void fillDragData(GdkDragContext*, GtkSelectionData*, unsigned info);
void finishDrag(GdkDragContext*);
void dragEntered(GdkDragContext*, GtkSelectionData*, unsigned info, unsigned time);
void dragMotion(GdkDragContext*, const WebCore::IntPoint& position, unsigned time);
void dragLeave(GdkDragContext*);
bool drop(GdkDragContext*, const WebCore::IntPoint& position, unsigned time);
private:
struct DroppingContext {
DroppingContext(GdkDragContext*, const WebCore::IntPoint& position);
GdkDragContext* gdkContext { nullptr };
WebCore::IntPoint lastMotionPosition;
Ref<WebCore::SelectionData> selectionData;
unsigned pendingDataRequests { 0 };
bool dropHappened { false };
};
WebCore::SelectionData* dropDataSelection(GdkDragContext*, GtkSelectionData*, unsigned info, WebCore::IntPoint& position);
WebCore::SelectionData* dragDataSelection(GdkDragContext*, const WebCore::IntPoint& position, unsigned time);
WebPageProxy& m_page;
HashMap<GdkDragContext*, std::unique_ptr<DroppingContext>> m_droppingContexts;
#if GTK_CHECK_VERSION(3, 16, 0)
GRefPtr<GdkDragContext> m_dragContext;
RefPtr<WebCore::SelectionData> m_draggingSelectionData;
#else
HashMap<GdkDragContext*, RefPtr<WebCore::SelectionData>> m_draggingSelectionDataMap;
#endif
};
}
#endif // ENABLE(DRAG_SUPPORT)