1 files changed, 543 insertions, 0 deletions
diff --git a/vcl/osx/DropTarget.cxx b/vcl/osx/DropTarget.cxx
new file mode 100644
index 0000000000..d9e34030d1
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+++ b/vcl/osx/DropTarget.cxx
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+/* -*- 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 .
+ */
+
+#include <com/sun/star/datatransfer/dnd/DNDConstants.hpp>
+#include <com/sun/star/datatransfer/XTransferable.hpp>
+#include <com/sun/star/datatransfer/dnd/DropTargetDragEnterEvent.hpp>
+#include <cppuhelper/interfacecontainer.hxx>
+#include "clipboard.hxx"
+#include "DropTarget.hxx"
+#include "DragActionConversion.hxx"
+#include "DragSource.hxx"
+#include <rtl/ustring.h>
+#include <premac.h>
+#include <Carbon/Carbon.h>
+#include <postmac.h>
+#include <osx/salframe.h>
+#include <osx/salframeview.h>
+#include <cppuhelper/supportsservice.hxx>
+
+using namespace cppu;
+using namespace osl;
+using namespace com::sun::star::datatransfer;
+using namespace com::sun::star::datatransfer::dnd;
+using namespace com::sun::star::datatransfer::dnd::DNDConstants;
+using namespace com::sun::star::datatransfer::clipboard;
+using namespace com::sun::star::lang;
+using namespace com::sun::star::uno;
+using namespace com::sun::star;
+using namespace comphelper;
+
+static OUString dropTarget_getImplementationName()
+{
+    return "com.sun.star.comp.datatransfer.dnd.OleDropTarget_V1";
+}
+
+static Sequence<OUString> dropTarget_getSupportedServiceNames()
+{
+    return { OUString("com.sun.star.datatransfer.dnd.OleDropTarget") };
+}
+
+namespace /* private */
+{
+    // Cocoa's coordinate system has its origin lower-left, VCL's
+    // coordinate system upper-left hence we need to transform
+    // coordinates
+
+    void CocoaToVCL(NSPoint& rPoint, const NSRect& bounds)
+    {
+        rPoint.y = bounds.size.height - rPoint.y;
+    }
+}
+
+@implementation DropTargetHelper
+
+-(DropTargetHelper*)initWithDropTarget:(DropTarget*)pdt
+{
+    self = [super init];
+
+    if (self)
+    {
+        mDropTarget = pdt;
+    }
+
+    return self;
+}
+
+-(NSDragOperation)draggingEntered:(id <NSDraggingInfo>)sender
+{
+    return mDropTarget->draggingEntered(sender);
+}
+
+-(NSDragOperation)draggingUpdated:(id <NSDraggingInfo>)sender
+{
+    return mDropTarget->draggingUpdated(sender);
+}
+
+-(void)draggingExited:(id <NSDraggingInfo>)sender
+{
+    mDropTarget->draggingExited(sender);
+}
+
+-(BOOL)prepareForDragOperation:(id <NSDraggingInfo>)sender
+{
+    (void) sender;
+    return DropTarget::prepareForDragOperation();
+}
+
+-(BOOL)performDragOperation:(id <NSDraggingInfo>)sender
+{
+    (void) sender;
+    return mDropTarget->performDragOperation();
+}
+
+-(void)concludeDragOperation:(id <NSDraggingInfo>)sender
+{
+    mDropTarget->concludeDragOperation(sender);
+}
+
+@end
+
+DropTarget::DropTarget() :
+    WeakComponentImplHelper<XInitialization, XDropTarget, XDropTargetDragContext, XDropTargetDropContext, XServiceInfo>(m_aMutex),
+    mView(nil),
+    mpFrame(nullptr),
+    mDropTargetHelper(nil),
+    mbActive(false),
+    mDragSourceSupportedActions(DNDConstants::ACTION_NONE),
+    mSelectedDropAction(DNDConstants::ACTION_NONE),
+    mDefaultActions(DNDConstants::ACTION_COPY_OR_MOVE | DNDConstants::ACTION_LINK | DNDConstants::ACTION_DEFAULT)
+{
+    mDataFlavorMapper = std::make_shared<DataFlavorMapper>();
+}
+
+DropTarget::~DropTarget()
+{
+    if( AquaSalFrame::isAlive( mpFrame ) )
+        [static_cast<id <DraggingDestinationHandler>>(mView) unregisterDraggingDestinationHandler:mDropTargetHelper];
+    [mDropTargetHelper release];
+}
+
+sal_Int8 DropTarget::determineDropAction(sal_Int8 dropActions, id sender) const
+{
+    sal_Int8 dropAct = dropActions;
+    bool srcAndDestEqual = false;
+
+    if ([sender draggingSource] != nil)
+    {
+        // Internal DnD
+        NSView* destView = [[sender draggingDestinationWindow] contentView];
+        srcAndDestEqual = (DragSource::g_DragSourceView == destView);
+    }
+
+    // If ACTION_DEFAULT is set this means NSDragOperationGeneric
+    // has been set and we map this to ACTION_MOVE or ACTION_COPY
+    // depending on whether or not source and dest are equal,
+    // this hopefully satisfies all parties
+    if( (dropActions == DNDConstants::ACTION_DEFAULT)
+        || ((dropActions == mDragSourceSupportedActions)
+        && !(~mDragSourceSupportedActions & DNDConstants::ACTION_COPY_OR_MOVE ) ) )
+    {
+        dropAct = srcAndDestEqual ? DNDConstants::ACTION_MOVE :
+        DNDConstants::ACTION_COPY;
+    }
+     // if more than one drop actions have been specified
+     // set ACTION_DEFAULT in order to let the drop target
+     // decide which one to use
+    else if (dropActions != DNDConstants::ACTION_NONE &&
+            dropActions != DNDConstants::ACTION_MOVE &&
+            dropActions != DNDConstants::ACTION_COPY &&
+            dropActions != DNDConstants::ACTION_LINK)
+    {
+        if (srcAndDestEqual)
+        {
+            dropAct = dropActions;
+        }
+        else // source and destination are different
+        {
+            if (dropActions & DNDConstants::ACTION_COPY)
+                dropAct = DNDConstants::ACTION_COPY;
+            else if (dropActions & DNDConstants::ACTION_MOVE)
+                dropAct = DNDConstants::ACTION_MOVE;
+            else if (dropActions & DNDConstants::ACTION_LINK)
+                dropAct = DNDConstants::ACTION_LINK;
+        }
+
+        dropAct |= DNDConstants::ACTION_DEFAULT;
+    }
+
+    return dropAct;
+}
+
+NSDragOperation DropTarget::draggingEntered(id sender)
+{
+    // Initially when DnD will be started no modifier key can be pressed yet
+    // thus we are getting all actions that the drag source supports, we save
+    // this value because later the system masks the drag source actions if
+    // a modifier key will be pressed
+    mDragSourceSupportedActions = SystemToOfficeDragActions([sender draggingSourceOperationMask]);
+
+    // Only if the drop target is really interested in the drag actions
+    // supported by the source
+    if (mDragSourceSupportedActions & mDefaultActions)
+    {
+        sal_Int8 currentAction = determineDropAction(mDragSourceSupportedActions, sender);
+
+        NSRect bounds = [mView bounds];
+        NSPoint mouseLoc = [NSEvent mouseLocation];
+
+        id wnd = [mView window];
+        NSPoint dragLocation = [mView convertPoint:[wnd convertRectFromScreen:NSMakeRect(mouseLoc.x, mouseLoc.y, 1, 1)].origin fromView:nil];
+
+        CocoaToVCL(dragLocation, bounds);
+
+        sal_Int32 posX = static_cast<sal_Int32>(dragLocation.x);
+        sal_Int32 posY = static_cast<sal_Int32>(dragLocation.y);
+
+        NSPasteboard* dragPboard = [sender draggingPasteboard];
+        mXCurrentDragClipboard = new AquaClipboard(dragPboard, false);
+
+        uno::Reference<XTransferable> xTransferable = DragSource::g_XTransferable.is() ?
+                                                      DragSource::g_XTransferable : mXCurrentDragClipboard->getContents();
+
+        DropTargetDragEnterEvent dtdee(getXWeak(),
+                                        0,
+                                        this,
+                                        currentAction,
+                                        posX,
+                                        posY,
+                                        mDragSourceSupportedActions,
+                                        xTransferable->getTransferDataFlavors());
+
+        fire_dragEnter(dtdee);
+    }
+
+    return OfficeToSystemDragActions(mSelectedDropAction);
+}
+
+NSDragOperation DropTarget::draggingUpdated(id sender)
+{
+    sal_Int8 currentDragSourceActions =
+    SystemToOfficeDragActions([sender draggingSourceOperationMask]);
+    NSDragOperation dragOp = NSDragOperationNone;
+
+    if (currentDragSourceActions & mDefaultActions)
+    {
+        sal_Int8 currentAction = determineDropAction(currentDragSourceActions, sender);
+        NSRect bounds = [mView bounds];
+        NSPoint mouseLoc = [NSEvent mouseLocation];
+
+        id wnd = [mView window];
+        NSPoint dragLocation = [mView convertPoint:[wnd convertRectFromScreen:NSMakeRect(mouseLoc.x, mouseLoc.y, 1, 1)].origin fromView:nil];
+
+        CocoaToVCL(dragLocation, bounds);
+
+        sal_Int32 posX = static_cast<sal_Int32>(dragLocation.x);
+        sal_Int32 posY = static_cast<sal_Int32>(dragLocation.y);
+
+        DropTargetDragEvent dtde(getXWeak(),
+                               0,
+                               this,
+                               currentAction,
+                               posX,
+                               posY,
+                               mDragSourceSupportedActions);
+
+        fire_dragOver(dtde);
+
+        // drag over callbacks likely have rendered something
+        [mView setNeedsDisplay: true];
+
+        dragOp = OfficeToSystemDragActions(mSelectedDropAction);
+
+        //NSLog(@"Drag update: Source actions: %x proposed action %x selected action %x", mDragSourceSupportedActions, currentAction, mSelectedDropAction);
+    }
+
+    if (dragOp == NSDragOperationNone)
+        [[NSCursor operationNotAllowedCursor] set];
+    else if (dragOp == NSDragOperationCopy)
+        [[NSCursor dragCopyCursor] set];
+    else
+        [[NSCursor arrowCursor] set];
+
+    return dragOp;
+}
+
+void DropTarget::draggingExited(id /*sender*/)
+{
+    DropTargetEvent dte(getXWeak(), 0);
+    fire_dragExit(dte);
+    mDragSourceSupportedActions = DNDConstants::ACTION_NONE;
+    mSelectedDropAction = DNDConstants::ACTION_NONE;
+    [[NSCursor arrowCursor] set];
+}
+
+BOOL DropTarget::prepareForDragOperation()
+{
+    return true;
+}
+
+BOOL DropTarget::performDragOperation()
+{
+    bool bSuccess = false;
+
+    if (mSelectedDropAction != DNDConstants::ACTION_NONE)
+    {
+        uno::Reference<XTransferable> xTransferable = DragSource::g_XTransferable;
+
+        if (!DragSource::g_XTransferable.is())
+        {
+            xTransferable = mXCurrentDragClipboard->getContents();
+        }
+
+        NSRect bounds = [mView bounds];
+        NSPoint mouseLoc = [NSEvent mouseLocation];
+
+        id wnd = [mView window];
+        NSPoint dragLocation = [mView convertPoint:[wnd convertRectFromScreen:NSMakeRect(mouseLoc.x, mouseLoc.y, 1, 1)].origin fromView:nil];
+
+        CocoaToVCL(dragLocation, bounds);
+
+        sal_Int32 posX = static_cast<sal_Int32>(dragLocation.x);
+        sal_Int32 posY = static_cast<sal_Int32>(dragLocation.y);
+
+        DropTargetDropEvent dtde(getXWeak(),
+                               0,
+                               this,
+                               mSelectedDropAction,
+                               posX,
+                               posY,
+                               mDragSourceSupportedActions,
+                               xTransferable);
+
+        fire_drop(dtde);
+
+        bSuccess = true;
+    }
+
+    return bSuccess;
+}
+
+void DropTarget::concludeDragOperation(id /*sender*/)
+{
+    mDragSourceSupportedActions = DNDConstants::ACTION_NONE;
+    mSelectedDropAction = DNDConstants::ACTION_NONE;
+    mXCurrentDragClipboard.clear();
+    [[NSCursor arrowCursor] set];
+}
+
+// called from WeakComponentImplHelperX::dispose
+// WeakComponentImplHelper calls disposing before it destroys
+// itself.
+void SAL_CALL DropTarget::disposing()
+{
+}
+
+void SAL_CALL DropTarget::initialize(const Sequence< Any >& aArguments)
+{
+    if (aArguments.getLength() < 2)
+    {
+        throw RuntimeException("DropTarget::initialize: Cannot install window event handler",
+                               getXWeak());
+    }
+
+    Any pNSView = aArguments[0];
+    sal_uInt64 tmp = 0;
+    pNSView >>= tmp;
+    mView = reinterpret_cast<id>(tmp);
+    mpFrame = [static_cast<SalFrameView*>(mView) getSalFrame];
+
+    mDropTargetHelper = [[DropTargetHelper alloc] initWithDropTarget: this];
+
+    [static_cast<id <DraggingDestinationHandler>>(mView) registerDraggingDestinationHandler:mDropTargetHelper];
+    [mView registerForDraggedTypes: DataFlavorMapper::getAllSupportedPboardTypes()];
+
+    id wnd = [mView window];
+    NSWindow* parentWnd = [wnd parentWindow];
+    unsigned int topWndStyle = (NSWindowStyleMaskTitled | NSWindowStyleMaskClosable | NSWindowStyleMaskResizable);
+    unsigned int wndStyles = [wnd styleMask] & topWndStyle;
+
+    if (parentWnd == nil && (wndStyles == topWndStyle))
+    {
+        [wnd registerDraggingDestinationHandler:mDropTargetHelper];
+SAL_WNODEPRECATED_DECLARATIONS_PUSH
+            // "'NSFilenamesPboardType' is deprecated: first deprecated in macOS 10.14 - Create
+            // multiple pasteboard items with NSPasteboardTypeFileURL or kUTTypeFileURL instead"
+        [wnd registerForDraggedTypes: [NSArray arrayWithObjects: NSFilenamesPboardType, nil]];
+SAL_WNODEPRECATED_DECLARATIONS_POP
+    }
+}
+
+void SAL_CALL DropTarget::addDropTargetListener(const uno::Reference<XDropTargetListener>& dtl)
+{
+    rBHelper.addListener(cppu::UnoType<decltype(dtl)>::get(), dtl);
+}
+
+void SAL_CALL DropTarget::removeDropTargetListener(const uno::Reference<XDropTargetListener>& dtl)
+{
+    rBHelper.removeListener(cppu::UnoType<decltype(dtl)>::get(), dtl);
+}
+
+sal_Bool SAL_CALL DropTarget::isActive(  )
+{
+    return mbActive;
+}
+
+void SAL_CALL DropTarget::setActive(sal_Bool active)
+{
+    mbActive = active;
+}
+
+sal_Int8 SAL_CALL DropTarget::getDefaultActions()
+{
+    return mDefaultActions;
+}
+
+void SAL_CALL DropTarget::setDefaultActions(sal_Int8 actions)
+{
+    OSL_ENSURE( actions < 8, "No valid default actions");
+    mDefaultActions= actions;
+}
+
+void SAL_CALL DropTarget::acceptDrag(sal_Int8 dragOperation)
+{
+    mSelectedDropAction = dragOperation;
+}
+
+void SAL_CALL DropTarget::rejectDrag()
+{
+    mSelectedDropAction = DNDConstants::ACTION_NONE;
+}
+
+void SAL_CALL DropTarget::acceptDrop(sal_Int8 dropOperation)
+{
+    mSelectedDropAction = dropOperation;
+}
+
+void SAL_CALL DropTarget::rejectDrop()
+{
+    mSelectedDropAction = DNDConstants::ACTION_NONE;
+}
+
+void SAL_CALL DropTarget::dropComplete(sal_Bool success)
+{
+    // Reset the internal transferable used as shortcut in case this is
+    // an internal D&D operation
+    DragSource::g_XTransferable.clear();
+    DragSource::g_DropSuccessSet = true;
+    DragSource::g_DropSuccess = success;
+}
+
+void DropTarget::fire_drop( const DropTargetDropEvent& dte)
+{
+    OInterfaceContainerHelper* pContainer= rBHelper.getContainer( cppu::UnoType<XDropTargetListener>::get());
+    if( pContainer)
+    {
+        OInterfaceIteratorHelper iter( *pContainer);
+        while( iter.hasMoreElements())
+        {
+            uno::Reference<XDropTargetListener> listener( static_cast<XDropTargetListener*>( iter.next()));
+
+            try { listener->drop( dte); }
+            catch(RuntimeException&) {}
+        }
+    }
+}
+
+void DropTarget::fire_dragEnter(const DropTargetDragEnterEvent& e)
+{
+    OInterfaceContainerHelper* pContainer= rBHelper.getContainer( cppu::UnoType<XDropTargetListener>::get());
+    if( pContainer)
+    {
+        OInterfaceIteratorHelper iter( *pContainer);
+        while( iter.hasMoreElements())
+        {
+            uno::Reference<XDropTargetListener> listener( static_cast<XDropTargetListener*>( iter.next()));
+
+            try { listener->dragEnter( e); }
+            catch (RuntimeException&) {}
+        }
+    }
+}
+
+void DropTarget::fire_dragExit(const DropTargetEvent& dte)
+{
+    OInterfaceContainerHelper* pContainer= rBHelper.getContainer( cppu::UnoType<XDropTargetListener>::get());
+
+    if( pContainer)
+    {
+        OInterfaceIteratorHelper iter( *pContainer);
+        while( iter.hasMoreElements())
+        {
+            uno::Reference<XDropTargetListener> listener( static_cast<XDropTargetListener*>( iter.next()));
+
+            try { listener->dragExit( dte); }
+            catch (RuntimeException&) {}
+        }
+    }
+}
+
+void DropTarget::fire_dragOver(const DropTargetDragEvent& dtde)
+{
+    OInterfaceContainerHelper* pContainer= rBHelper.getContainer( cppu::UnoType<XDropTargetListener>::get());
+    if( pContainer)
+    {
+        OInterfaceIteratorHelper iter( *pContainer );
+        while( iter.hasMoreElements())
+        {
+            uno::Reference<XDropTargetListener> listener( static_cast<XDropTargetListener*>( iter.next()));
+
+            try { listener->dragOver( dtde); }
+            catch (RuntimeException&) {}
+        }
+    }
+}
+
+void DropTarget::fire_dropActionChanged(const DropTargetDragEvent& dtde)
+{
+    OInterfaceContainerHelper* pContainer= rBHelper.getContainer( cppu::UnoType<XDropTargetListener>::get());
+    if( pContainer)
+    {
+        OInterfaceIteratorHelper iter( *pContainer);
+        while( iter.hasMoreElements())
+        {
+            uno::Reference<XDropTargetListener> listener( static_cast<XDropTargetListener*>( iter.next()));
+
+            try { listener->dropActionChanged( dtde); }
+            catch (RuntimeException&) {}
+        }
+    }
+}
+
+OUString SAL_CALL DropTarget::getImplementationName()
+{
+    return dropTarget_getImplementationName();
+}
+
+sal_Bool SAL_CALL DropTarget::supportsService( const OUString& ServiceName )
+{
+    return cppu::supportsService(this, ServiceName);
+}
+
+Sequence< OUString > SAL_CALL DropTarget::getSupportedServiceNames(  )
+{
+    return dropTarget_getSupportedServiceNames();
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */