Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 177 insertions, 0 deletions

diff --git a/vcl/inc/win/dnd_target.hxx b/vcl/inc/win/dnd_target.hxx
new file mode 100644
index 000000000..4c4e8eebc
--- /dev/null
+++ b/vcl/inc/win/dnd_target.hxx
@@ -0,0 +1,177 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+#pragma once
+
+#include <com/sun/star/lang/XInitialization.hpp>
+#include <com/sun/star/datatransfer/dnd/XDropTarget.hpp>
+#include <com/sun/star/datatransfer/dnd/DropTargetDragEnterEvent.hpp>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+
+#include <cppuhelper/basemutex.hxx>
+#include <cppuhelper/compbase.hxx>
+#include <cppuhelper/interfacecontainer.hxx>
+#include <osl/mutex.hxx>
+
+#include <oleidl.h>
+
+namespace com::sun::star::uno
+{
+class XComponentContext;
+}
+
+using namespace ::com::sun::star::lang;
+using namespace ::com::sun::star::uno;
+using namespace cppu;
+using namespace osl;
+using namespace ::com::sun::star::datatransfer;
+using namespace ::com::sun::star::datatransfer::dnd;
+
+// The client
+// has to call XComponent::dispose. The thread that calls initialize
+// must also execute the destruction of the instance. This is because
+// initialize calls OleInitialize and the destructor calls OleUninitialize.
+// If the service calls OleInitialize then it also calls OleUnitialize when
+// it is destroyed. Therefore no second instance may exist which was
+// created in the same thread and still needs OLE.
+class DropTarget : public cppu::BaseMutex,
+                   public WeakComponentImplHelper<XInitialization, XDropTarget, XServiceInfo>
+
+{
+private:
+    friend DWORD WINAPI DndTargetOleSTAFunc(LPVOID pParams);
+    // The native window which acts as drop target.
+    // It is set in initialize. In case RegisterDragDrop fails it is set
+    // to NULL
+    HWND m_hWnd; // set by initialize
+    // Holds the thread id of the thread which created the window that is the
+    // drop target. Only used when DropTarget::initialize is called from an MTA
+    // thread
+    DWORD m_threadIdWindow;
+    // This is the thread id of the OLE thread that is created in DropTarget::initialize
+    // when the calling thread is an MTA
+    DWORD m_threadIdTarget;
+    // The handle of the thread that is created in DropTarget::initialize
+    // when the calling thread is an MTA
+    HANDLE m_hOleThread;
+    // The thread id of the thread which called initialize. When the service dies
+    // than m_oleThreadId is used to determine if the service successfully called
+    // OleInitialize. If so then OleUninitialize has to be called.
+    DWORD m_oleThreadId;
+    // An Instance of IDropTargetImpl which receives calls from the system's drag
+    // and drop implementation. It delegate the calls to name alike functions in
+    // this class.
+    IDropTarget* m_pDropTarget;
+
+    Reference<XComponentContext> m_xContext;
+    // If m_bActive == sal_True then events are fired to XDropTargetListener s,
+    // none otherwise. The default value is sal_True.
+    bool m_bActive;
+    sal_Int8 m_nDefaultActions;
+
+    // This value is set when a XDropTargetListener calls accept or reject on
+    // the XDropTargetDropContext or  XDropTargetDragContext.
+    // The values are from the DNDConstants group.
+    sal_Int8 m_nCurrentDropAction;
+    // This value is manipulated by the XDropTargetListener
+    sal_Int8 m_nLastDropAction;
+
+    Reference<XTransferable> m_currentData;
+    // The current action is used to determine if the USER
+    // action has changed (dropActionChanged)
+    //  sal_Int8 m_userAction;
+    // Set by listeners when they call XDropTargetDropContext::dropComplete
+    bool m_bDropComplete;
+    Reference<XDropTargetDragContext> m_currentDragContext;
+    Reference<XDropTargetDropContext> m_currentDropContext;
+
+public:
+    explicit DropTarget(const Reference<XComponentContext>& rxContext);
+    virtual ~DropTarget() override;
+    DropTarget(DropTarget const&) = delete;
+    DropTarget& operator=(DropTarget const&) = delete;
+
+    // Overrides WeakComponentImplHelper::disposing which is called by
+    // WeakComponentImplHelper::dispose
+    // Must be called.
+    virtual void SAL_CALL disposing() override;
+    // XInitialization
+    virtual void SAL_CALL initialize(const Sequence<Any>& aArguments) override;
+
+    // XDropTarget
+    virtual void SAL_CALL addDropTargetListener(const Reference<XDropTargetListener>& dtl) override;
+    virtual void SAL_CALL
+    removeDropTargetListener(const Reference<XDropTargetListener>& dtl) override;
+    // Default is not active
+    virtual sal_Bool SAL_CALL isActive() override;
+    virtual void SAL_CALL setActive(sal_Bool isActive) override;
+    virtual sal_Int8 SAL_CALL getDefaultActions() override;
+    virtual void SAL_CALL setDefaultActions(sal_Int8 actions) override;
+
+    // XServiceInfo
+    virtual OUString SAL_CALL getImplementationName() override;
+    virtual sal_Bool SAL_CALL supportsService(const OUString& ServiceName) override;
+    virtual Sequence<OUString> SAL_CALL getSupportedServiceNames() override;
+
+    // Functions called from the IDropTarget implementation ( m_pDropTarget)
+    virtual HRESULT DragEnter(
+        /* [unique][in] */ IDataObject* pDataObj,
+        /* [in] */ DWORD grfKeyState,
+        /* [in] */ POINTL pt,
+        /* [out][in] */ DWORD* pdwEffect);
+
+    virtual HRESULT STDMETHODCALLTYPE DragOver(
+        /* [in] */ DWORD grfKeyState,
+        /* [in] */ POINTL pt,
+        /* [out][in] */ DWORD* pdwEffect);
+
+    virtual HRESULT STDMETHODCALLTYPE DragLeave();
+
+    virtual HRESULT STDMETHODCALLTYPE Drop(
+        /* [unique][in] */ IDataObject* pDataObj,
+        /* [in] */ DWORD grfKeyState,
+        /* [in] */ POINTL pt,
+        /* [out][in] */ DWORD* pdwEffect);
+
+    // Non - interface functions --------------------------------------------------
+    // XDropTargetDropContext delegated from DropContext
+
+    void _acceptDrop(sal_Int8 dropOperation, const Reference<XDropTargetDropContext>& context);
+    void _rejectDrop(const Reference<XDropTargetDropContext>& context);
+    void _dropComplete(bool success, const Reference<XDropTargetDropContext>& context);
+
+    // XDropTargetDragContext delegated from DragContext
+    void _acceptDrag(sal_Int8 dragOperation, const Reference<XDropTargetDragContext>& context);
+    void _rejectDrag(const Reference<XDropTargetDragContext>& context);
+
+protected:
+    // Gets the current action dependent on the pressed modifiers, the effects
+    // supported by the drop source (IDropSource) and the default actions of the
+    // drop target (XDropTarget, this class))
+    inline sal_Int8 getFilteredActions(DWORD grfKeyState, DWORD sourceActions);
+    // Only filters with the default actions
+    inline sal_Int8 getFilteredActions(DWORD grfKeyState);
+
+    void fire_drop(const DropTargetDropEvent& dte);
+    void fire_dragEnter(const DropTargetDragEnterEvent& dtde);
+    void fire_dragExit(const DropTargetEvent& dte);
+    void fire_dragOver(const DropTargetDragEvent& dtde);
+    void fire_dropActionChanged(const DropTargetDragEvent& dtde);
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */