public static string GetSourceProjectPath(Microsoft.VisualStudio.OLE.Interop.IDataObject dataObject)
{
string projectPath = null;
FORMATETC fmtetc = CreateFormatEtc(CF_VSPROJECTCLIPDESCRIPTOR);
if (QueryGetData(dataObject, ref fmtetc) == VSConstants.S_OK)
{
STGMEDIUM stgmedium = DragDropHelper.GetData(dataObject, ref fmtetc);
if (stgmedium.tymed == (uint)TYMED.TYMED_HGLOBAL)
{
// We are releasing the cloned hglobal here.
IntPtr dropInfoHandle = stgmedium.unionmember;
if (dropInfoHandle != IntPtr.Zero)
{
try
{
string path = GetData(dropInfoHandle);
// Clone the path that we can release our memory.
if (!String.IsNullOrEmpty(path))
{
projectPath = String.Copy(path);
}
}
finally
{
Marshal.FreeHGlobal(dropInfoHandle);
}
}
}
}
return(projectPath);
}
/// <summary>
/// Empties all the data structures added to the clipboard and flushes the clipboard.
/// </summary>
private void CleanAndFlushClipboard()
{
IOleDataObject oleDataObject = null;
ErrorHandler.ThrowOnFailure(UnsafeNativeMethods.OleGetClipboard(out oleDataObject));
if (oleDataObject == null)
{
return;
}
string sourceProjectPath = DragDropHelper.GetSourceProjectPath(oleDataObject);
if (!String.IsNullOrEmpty(sourceProjectPath) && NativeMethods.IsSamePath(sourceProjectPath, this.GetMkDocument()))
{
UnsafeNativeMethods.OleFlushClipboard();
int clipboardOpened = 0;
try
{
clipboardOpened = UnsafeNativeMethods.OpenClipboard(IntPtr.Zero);
UnsafeNativeMethods.EmptyClipboard();
}
finally
{
if (clipboardOpened == 1)
{
UnsafeNativeMethods.CloseClipboard();
}
}
}
}
public static void QueryGetData(Microsoft.VisualStudio.OLE.Interop.IDataObject pDataObject, ref FORMATETC fmtetc)
{
FORMATETC[] af = new FORMATETC[1];
af[0] = fmtetc;
pDataObject.QueryGetData(af);
fmtetc = af[0];
}
/// <summary>
/// Handle the Cut operation to the clipboard
/// </summary>
protected internal override int CutToClipboard()
{
int returnValue = (int)OleConstants.OLECMDERR_E_NOTSUPPORTED;
try
{
this.RegisterClipboardNotifications(true);
// Create our data object and change the selection to show item(s) being cut
IOleDataObject dataObject = this.PackageSelectionDataObject(true);
if (dataObject != null)
{
this.SourceDraggedOrCutOrCopied = true;
// Add our cut item(s) to the clipboard
ErrorHandler.ThrowOnFailure(UnsafeNativeMethods.OleSetClipboard(dataObject));
// Inform VS (UiHierarchyWindow) of the cut
IVsUIHierWinClipboardHelper clipboardHelper = (IVsUIHierWinClipboardHelper)GetService(typeof(SVsUIHierWinClipboardHelper));
if (clipboardHelper == null)
{
return(VSConstants.E_FAIL);
}
returnValue = ErrorHandler.ThrowOnFailure(clipboardHelper.Cut(dataObject));
}
}
catch (COMException e)
{
Trace.WriteLine("Exception : " + e.Message);
returnValue = e.ErrorCode;
}
return(returnValue);
}
/// <summary>
/// Determines if the paste command should be allowed.
/// </summary>
/// <returns></returns>
protected internal override bool AllowPasteCommand()
{
IOleDataObject dataObject = null;
try
{
ErrorHandler.ThrowOnFailure(UnsafeNativeMethods.OleGetClipboard(out dataObject));
if (dataObject == null)
{
return(false);
}
// First see if this is a set of storage based items
FORMATETC format = DragDropHelper.CreateFormatEtc((ushort)DragDropHelper.CF_VSSTGPROJECTITEMS);
if (dataObject.QueryGetData(new FORMATETC[] { format }) == VSConstants.S_OK)
{
return(true);
}
// Try reference based items
format = DragDropHelper.CreateFormatEtc((ushort)DragDropHelper.CF_VSREFPROJECTITEMS);
if (dataObject.QueryGetData(new FORMATETC[] { format }) == VSConstants.S_OK)
{
return(true);
}
// Try windows explorer files format
format = DragDropHelper.CreateFormatEtc((ushort)NativeMethods.CF_HDROP);
return(dataObject.QueryGetData(new FORMATETC[] { format }) == VSConstants.S_OK);
}
// We catch External exceptions since it might be that it is not our data on the clipboard.
catch (ExternalException e)
{
Trace.WriteLine("Exception :" + e.Message);
return(false);
}
}
/// <summary>
/// Get the dropdatatype from the dataobject
/// </summary>
/// <param name="pDataObject">The dataobject to be analysed for its format</param>
/// <returns>dropdatatype or none if dataobject does not contain known format</returns>
internal static DropDataType QueryDropDataType(IOleDataObject pDataObject)
{
if (pDataObject == null)
{
return(DropDataType.None);
}
// known formats include File Drops (as from WindowsExplorer),
// VSProject Reference Items and VSProject Storage Items.
FORMATETC fmt = DragDropHelper.CreateFormatEtc(NativeMethods.CF_HDROP);
if (DragDropHelper.QueryGetData(pDataObject, ref fmt) == VSConstants.S_OK)
{
return(DropDataType.Shell);
}
fmt.cfFormat = DragDropHelper.CF_VSREFPROJECTITEMS;
if (DragDropHelper.QueryGetData(pDataObject, ref fmt) == VSConstants.S_OK)
{
// Data is from a Ref-based project.
return(DropDataType.VsRef);
}
fmt.cfFormat = DragDropHelper.CF_VSSTGPROJECTITEMS;
if (DragDropHelper.QueryGetData(pDataObject, ref fmt) == VSConstants.S_OK)
{
return(DropDataType.VsStg);
}
return(DropDataType.None);
}
public static int QueryGetData(Microsoft.VisualStudio.OLE.Interop.IDataObject pDataObject, ref FORMATETC fmtetc)
{
ThreadHelper.ThrowIfNotOnUIThread();
int returnValue = VSConstants.E_FAIL;
FORMATETC[] af = new FORMATETC[1];
af[0] = fmtetc;
try
{
int result = ErrorHandler.ThrowOnFailure(pDataObject.QueryGetData(af));
if (result == VSConstants.S_OK)
{
fmtetc = af[0];
returnValue = VSConstants.S_OK;
}
}
catch (COMException e)
{
// do not display exception. We see this also when trying to ask for a Clipboard operation
// when the actual change was a drag/drop
returnValue = e.ErrorCode;
}
return(returnValue);
}
public static int QueryGetData(Microsoft.VisualStudio.OLE.Interop.IDataObject dataObject, ref FORMATETC fmtetc)
{
if (dataObject == null)
{
throw new ArgumentNullException("dataObject");
}
int returnValue = VSConstants.E_FAIL;
FORMATETC[] af = new FORMATETC[1];
af[0] = fmtetc;
try
{
int result = ErrorHandler.ThrowOnFailure(dataObject.QueryGetData(af));
if (result == VSConstants.S_OK)
{
fmtetc = af[0];
returnValue = VSConstants.S_OK;
}
}
catch (COMException e)
{
Trace.WriteLine("COMException : " + e.Message);
returnValue = e.ErrorCode;
}
return(returnValue);
}
/// <summary>
/// Determines whether the Toolbox user supports the referenced data object.
/// </summary>
/// <param name="pDO">Data object to be supported.</param>
/// <returns>If the method succeeds, it returns S_OK. If it fails, it returns an error code.</returns>
int IVsToolboxUser.IsSupported(IOleDataObject pDO)
{
// Create a OleDataObject from the input interface.
new OleDataObject(pDO);
// In all the other cases return S_FALSE
return(VSConstants.S_FALSE);
}
/// <summary>
/// After a drop or paste, will use the dwEffects
/// to determine whether we need to clean up the source nodes or not. If
/// justCleanup is set, it only does the cleanup work.
/// </summary>
internal void CleanupSelectionDataObject(bool dropped, bool cut, bool moved, bool justCleanup)
{
if (this.ItemsDraggedOrCutOrCopied == null || this.ItemsDraggedOrCutOrCopied.Count == 0)
{
return;
}
try
{
IVsUIHierarchyWindow w = UIHierarchyUtilities.GetUIHierarchyWindow(this.site, HierarchyNode.SolutionExplorer);
foreach (HierarchyNode node in this.ItemsDraggedOrCutOrCopied)
{
if ((moved && (cut || dropped) && !justCleanup))
{
// do not close it if the doc is dirty or we do not own it
bool isDirty, isOpen, isOpenedByUs;
uint docCookie;
IVsPersistDocData ppIVsPersistDocData;
DocumentManager manager = node.GetDocumentManager();
if (manager != null)
{
manager.GetDocInfo(out isOpen, out isDirty, out isOpenedByUs, out docCookie, out ppIVsPersistDocData);
if (isDirty || (isOpen && !isOpenedByUs))
{
continue;
}
// close it if opened
if (isOpen)
{
manager.Close(__FRAMECLOSE.FRAMECLOSE_NoSave);
}
}
node.Remove(true);
}
else if (w != null)
{
ErrorHandler.ThrowOnFailure(w.ExpandItem((IVsUIHierarchy)this, node.ID, EXPANDFLAGS.EXPF_UnCutHighlightItem));
}
}
}
finally
{
// Now delete the memory allocated by the packaging of datasources.
// If we just did a cut, or we are told to cleanup, then we need to free the data object. Otherwise, we leave it
// alone so that you can continue to paste the data in new locations.
if (moved || cut || justCleanup)
{
this.ItemsDraggedOrCutOrCopied.Clear();
this.CleanAndFlushClipboard();
}
this.dataObject = null;
this.dropDataType = DropDataType.None;
}
}
public static int QueryGetData(Microsoft.VisualStudio.OLE.Interop.IDataObject pDataObject, ref FORMATETC fmtetc)
{
FORMATETC[] af = new FORMATETC[1];
af[0] = fmtetc;
int hr = pDataObject.QueryGetData(af);
fmtetc = af[0];
return(hr);
}
public static STGMEDIUM GetData(Microsoft.VisualStudio.OLE.Interop.IDataObject pDataObject, ref FORMATETC fmtetc)
{
FORMATETC[] af = new FORMATETC[1];
af[0] = fmtetc;
STGMEDIUM[] sm = new STGMEDIUM[1];
pDataObject.GetData(af, sm);
fmtetc = af[0];
return(sm[0]);
}
internal Ole2BclDataObject(OleInterop.IDataObject oleData)
{
if (null == oleData)
{
throw new ArgumentNullException("Microsoft.VisualStudio.OLE.Interop.IDataObject");
}
this.oleData = oleData;
//this.bclData = oleData as BclComTypes.IDataObject;
this.bclData = null;
}
internal Ole2BclDataObject(BclComTypes.IDataObject bclData)
{
if (null == bclData)
{
throw new ArgumentNullException("System.Runtime.InteropServices.ComTypes.IDataObject");
}
//this.oleData = bclData as OleInterop.IDataObject;
this.oleData = null;
this.bclData = bclData;
}
/// <summary>
/// Handle the Paste operation to a targetNode
/// </summary>
protected internal override int PasteFromClipboard(HierarchyNode targetNode)
{
int returnValue = (int)OleConstants.OLECMDERR_E_NOTSUPPORTED;
//Get the clipboardhelper service and use it after processing dataobject
IVsUIHierWinClipboardHelper clipboardHelper = (IVsUIHierWinClipboardHelper)GetService(typeof(SVsUIHierWinClipboardHelper));
if (clipboardHelper == null)
{
return(VSConstants.E_FAIL);
}
try
{
//Get dataobject from clipboard
IOleDataObject dataObject = null;
ErrorHandler.ThrowOnFailure(UnsafeNativeMethods.OleGetClipboard(out dataObject));
if (dataObject == null)
{
return(VSConstants.E_UNEXPECTED);
}
DropEffect dropEffect = DropEffect.None;
DropDataType dropDataType = DropDataType.None;
try
{
dropDataType = this.ProcessSelectionDataObject(dataObject, targetNode.GetDragTargetHandlerNode());
dropEffect = this.QueryDropEffect(dropDataType, 0);
}
catch (ExternalException e)
{
Trace.WriteLine("Exception : " + e.Message);
// If it is a drop from windows and we get any kind of error ignore it. This
// prevents bogus messages from the shell from being displayed
if (dropDataType != DropDataType.Shell)
{
throw e;
}
}
finally
{
// Inform VS (UiHierarchyWindow) of the paste
returnValue = clipboardHelper.Paste(dataObject, (uint)dropEffect);
}
}
catch (COMException e)
{
Trace.WriteLine("Exception : " + e.Message);
returnValue = e.ErrorCode;
}
return(returnValue);
}
/// <summary>
/// Process dataobject from Drag/Drop/Cut/Copy/Paste operation
/// </summary>
/// <remarks>The targetNode is set if the method is called from a drop operation, otherwise it is null</remarks>
///
internal DropDataType ProcessSelectionDataObject(IOleDataObject dataObject, HierarchyNode targetNode)
{
DropDataType dropDataType = DropDataType.None;
bool isWindowsFormat = false;
// Try to get it as a directory based project.
List <string> filesDropped = DragDropHelper.GetDroppedFiles(DragDropHelper.CF_VSSTGPROJECTITEMS, dataObject, out dropDataType);
if (filesDropped.Count == 0)
{
filesDropped = DragDropHelper.GetDroppedFiles(DragDropHelper.CF_VSREFPROJECTITEMS, dataObject, out dropDataType);
}
if (filesDropped.Count == 0)
{
filesDropped = DragDropHelper.GetDroppedFiles(NativeMethods.CF_HDROP, dataObject, out dropDataType);
isWindowsFormat = (filesDropped.Count > 0);
}
if (dropDataType != DropDataType.None && filesDropped.Count > 0)
{
string[] filesDroppedAsArray = filesDropped.ToArray();
string sourceProjectPath = DragDropHelper.GetSourceProjectPath(dataObject);
HierarchyNode node = (targetNode == null) ? this : targetNode;
// For directory based projects the content of the clipboard is a double-NULL terminated list of Projref strings.
if (isWindowsFormat)
{
// This is the code path when source is windows explorer
VSADDRESULT[] vsaddresults = new VSADDRESULT[1];
vsaddresults[0] = VSADDRESULT.ADDRESULT_Failure;
int addResult = AddItem(node.ID, VSADDITEMOPERATION.VSADDITEMOP_OPENFILE, null, (uint)filesDropped.Count, filesDropped.ToArray(), IntPtr.Zero, vsaddresults);
if (addResult != VSConstants.S_OK && addResult != VSConstants.S_FALSE && addResult != (int)OleConstants.OLECMDERR_E_CANCELED &&
vsaddresults[0] != VSADDRESULT.ADDRESULT_Success)
{
ErrorHandler.ThrowOnFailure(addResult);
}
return(dropDataType);
}
else
{
if (AddFilesFromProjectReferences(node, filesDroppedAsArray))
{
return(dropDataType);
}
}
}
// If we reached this point then the drop data must be set to None.
// Otherwise the OnPaste will be called with a valid DropData and that would actually delete the item.
return(DropDataType.None);
}
/// <summary>
/// Called as soon as the mouse drags an item over a new hierarchy or hierarchy window
/// </summary>
/// <param name="pDataObject">reference to interface IDataObject of the item being dragged</param>
/// <param name="grfKeyState">Current state of the keyboard and the mouse modifier keys. See docs for a list of possible values</param>
/// <param name="itemid">Item identifier for the item currently being dragged</param>
/// <param name="pdwEffect">On entry, a pointer to the current DropEffect. On return, must contain the new valid DropEffect</param>
/// <returns>If the method succeeds, it returns S_OK. If it fails, it returns an error code.</returns>
public override int DragEnter(IOleDataObject pDataObject, uint grfKeyState, uint itemid, ref uint pdwEffect)
{
pdwEffect = (uint)DropEffect.None;
this.dropDataType = QueryDropDataType(pDataObject);
if (this.dropDataType != DropDataType.None)
{
pdwEffect = (uint)this.QueryDropEffect(this.dropDataType, grfKeyState);
}
return VSConstants.S_OK;
}
/// <summary>
/// Called when one or more items are dropped into the target hierarchy or hierarchy window when the mouse button is released.
/// </summary>
/// <param name="pDataObject">Reference to the IDataObject interface on the item being dragged. This data object contains the data being transferred in the drag-and-drop operation.
/// If the drop occurs, then this data object (item) is incorporated into the target hierarchy or hierarchy window.</param>
/// <param name="grfKeyState">Current state of the keyboard and the mouse modifier keys. See <seealso cref="IVsHierarchyDropDataTarget"/></param>
/// <param name="itemid">Item identifier of the drop data target over which the item is being dragged</param>
/// <param name="pdwEffect">Visual effects associated with the drag-and drop-operation, such as a cursor, bitmap, and so on.
/// The value of dwEffects passed to the source object via the OnDropNotify method is the value of pdwEffects returned by the Drop method</param>
/// <returns>If the method succeeds, it returns S_OK. If it fails, it returns an error code. </returns>
public override int Drop(IOleDataObject pDataObject, uint grfKeyState, uint itemid, ref uint pdwEffect)
{
if (pDataObject == null)
{
return(VSConstants.E_INVALIDARG);
}
pdwEffect = (uint)DropEffect.None;
// Get the node that is being dragged over and ask it which node should handle this call
HierarchyNode targetNode = NodeFromItemId(itemid);
if (targetNode != null)
{
targetNode = targetNode.GetDragTargetHandlerNode();
}
else
{
// There is no target node. The drop can not be completed.
return(VSConstants.S_FALSE);
}
int returnValue;
try
{
DropDataType dropDataType = DropDataType.None;
dropDataType = ProcessSelectionDataObject(pDataObject, targetNode);
pdwEffect = (uint)this.QueryDropEffect(dropDataType, grfKeyState);
// If it is a drop from windows and we get any kind of error we return S_FALSE and dropeffect none. This
// prevents bogus messages from the shell from being displayed
returnValue = (dropDataType != DropDataType.Shell) ? VSConstants.E_FAIL : VSConstants.S_OK;
}
catch (System.IO.FileNotFoundException e)
{
Trace.WriteLine("Exception : " + e.Message);
if (!Utilities.IsInAutomationFunction(this.Site))
{
string message = e.Message;
string title = string.Empty;
OLEMSGICON icon = OLEMSGICON.OLEMSGICON_CRITICAL;
OLEMSGBUTTON buttons = OLEMSGBUTTON.OLEMSGBUTTON_OK;
OLEMSGDEFBUTTON defaultButton = OLEMSGDEFBUTTON.OLEMSGDEFBUTTON_FIRST;
VsShellUtilities.ShowMessageBox(this.Site, title, message, icon, buttons, defaultButton);
}
returnValue = VSConstants.E_FAIL;
}
return(returnValue);
}
public static int QueryGetData(Microsoft.VisualStudio.OLE.Interop.IDataObject pDataObject, ref FORMATETC fmtetc)
{
FORMATETC[] af = new FORMATETC[1];
af[0] = fmtetc;
int result = pDataObject.QueryGetData(af);
if (result == VSConstants.S_OK)
{
fmtetc = af[0];
return(VSConstants.S_OK);
}
return(result);
}
public static STGMEDIUM GetData(Microsoft.VisualStudio.OLE.Interop.IDataObject dataObject, ref FORMATETC fmtetc)
{
if (dataObject == null)
{
throw new ArgumentNullException("dataObject");
}
FORMATETC[] af = new FORMATETC[1];
af[0] = fmtetc;
STGMEDIUM[] sm = new STGMEDIUM[1];
dataObject.GetData(af, sm);
fmtetc = af[0];
return(sm[0]);
}
/// <summary>
/// Determines whether the Toolbox user supports the referenced data object.
/// </summary>
/// <param name="pDO">Data object to be supported.</param>
/// <returns>If the method succeeds, it returns S_OK. If it fails, it returns an error code.</returns>
int IVsToolboxUser.IsSupported(IOleDataObject pDO)
{
// Create a OleDataObject from the input interface.
OleDataObject oleData = new OleDataObject(pDO);
// Check if the data object is of type MyToolboxData.
if (oleData.GetDataPresent(typeof(ToolboxItemData)))
{
return(VSConstants.S_OK);
}
// In all the other cases return S_FALSE
return(VSConstants.S_FALSE);
}
/// <summary>
/// Sends notification that an item in the Toolbox is selected through a click, or by pressing ENTER.
/// </summary>
/// <param name="pDO">Data object that is selected.</param>
/// <returns>If the method succeeds, it returns S_OK. If it fails, it returns an error code.</returns>
int IVsToolboxUser.ItemPicked(IOleDataObject pDO)
{
// Create a OleDataObject from the input interface.
OleDataObject oleData = new OleDataObject(pDO);
// Check if the picked item is the one we added to the toolbox.
if (oleData.GetDataPresent(typeof(Toolbox_TestItem1)))
{
Debug.WriteLine("MyToolboxItemData selected from the toolbox");
Toolbox_TestItem1 myData = (Toolbox_TestItem1)oleData.GetData(typeof(Toolbox_TestItem1));
//editorControl.Text += myData.Content;
}
return(VSConstants.S_OK);
}
/// <summary>
/// Called as soon as the mouse drags an item over a new hierarchy or hierarchy window
/// </summary>
/// <param name="pDataObject">reference to interface IDataObject of the item being dragged</param>
/// <param name="grfKeyState">Current state of the keyboard and the mouse modifier keys. See docs for a list of possible values</param>
/// <param name="itemid">Item identifier for the item currently being dragged</param>
/// <param name="pdwEffect">On entry, a pointer to the current DropEffect. On return, must contain the new valid DropEffect</param>
/// <returns>If the method succeeds, it returns S_OK. If it fails, it returns an error code.</returns>
public int DragEnter(IOleDataObject pDataObject, uint grfKeyState, uint itemid, ref uint pdwEffect) {
pdwEffect = (uint)DropEffect.None;
var item = NodeFromItemId(itemid);
if (item.GetDragTargetHandlerNode().CanAddFiles) {
_dropType = QueryDropDataType(pDataObject);
if (_dropType != DropDataType.None) {
pdwEffect = (uint)QueryDropEffect(grfKeyState);
}
}
return VSConstants.S_OK;
}
/// <summary>
/// Called as soon as the mouse drags an item over a new hierarchy or hierarchy window
/// </summary>
/// <param name="pDataObject">reference to interface IDataObject of the item being dragged</param>
/// <param name="grfKeyState">Current state of the keyboard and the mouse modifier keys. See docs for a list of possible values</param>
/// <param name="itemid">Item identifier for the item currently being dragged</param>
/// <param name="pdwEffect">On entry, a pointer to the current DropEffect. On return, must contain the new valid DropEffect</param>
/// <returns>If the method succeeds, it returns S_OK. If it fails, it returns an error code.</returns>
public override int DragEnter(IOleDataObject pDataObject, uint grfKeyState, uint itemid, ref uint pdwEffect)
{
pdwEffect = (uint)DropEffect.None;
if (this.SourceDraggedOrCutOrCopied)
{
return(VSConstants.S_OK);
}
this.dropDataType = QueryDropDataType(pDataObject);
if (this.dropDataType != DropDataType.None)
{
pdwEffect = (uint)this.QueryDropEffect(this.dropDataType, grfKeyState);
}
return(VSConstants.S_OK);
}
/// <summary>
/// Retrives data from a VS format.
/// </summary>
public static List <string> GetDroppedFiles(ushort format, Microsoft.VisualStudio.OLE.Interop.IDataObject dataObject, out DropDataType ddt)
{
ddt = DropDataType.None;
List <string> droppedFiles = new List <string>();
ThreadHelper.ThrowIfNotOnUIThread();
// try HDROP
FORMATETC fmtetc = CreateFormatEtc(format);
if (QueryGetData(dataObject, ref fmtetc) == VSConstants.S_OK)
{
STGMEDIUM stgmedium = DragDropHelper.GetData(dataObject, ref fmtetc);
if (stgmedium.tymed == (uint)TYMED.TYMED_HGLOBAL)
{
// We are releasing the cloned hglobal here.
IntPtr dropInfoHandle = stgmedium.unionmember;
if (dropInfoHandle != IntPtr.Zero)
{
ddt = DropDataType.Shell;
try
{
uint numFiles = UnsafeNativeMethods.DragQueryFile(dropInfoHandle, 0xFFFFFFFF, null, 0);
// We are a directory based project thus a projref string is placed on the clipboard.
// We assign the maximum length of a projref string.
// The format of a projref is : <Proj Guid>|<project rel path>|<file path>
uint lenght = (uint)Guid.Empty.ToString().Length + 2 * NativeMethods.MAX_PATH + 2;
char[] moniker = new char[lenght + 1];
for (uint fileIndex = 0; fileIndex < numFiles; fileIndex++)
{
uint queryFileLength = UnsafeNativeMethods.DragQueryFile(dropInfoHandle, fileIndex, moniker, lenght);
string filename = new String(moniker, 0, (int)queryFileLength);
droppedFiles.Add(filename);
}
}
finally
{
Marshal.FreeHGlobal(dropInfoHandle);
}
}
}
}
return(droppedFiles);
}
public override int DragOver(uint grfKeyState, uint itemid, ref uint pdwEffect)
{
if (this.dataObject == null)
{
this.dataObject = PackageSelectionDataObject(false);
}
this.dropDataType = QueryDropDataType(this.dataObject);
if (this.dropDataType != DropDataType.None)
{
pdwEffect = (uint)QueryDropEffect(dropDataType, grfKeyState);
}
//We should also analyze if the node being dragged over can accept the drop
if (!CanTargetNodeAcceptDrop(itemid))
{
pdwEffect = (uint)DropEffect.None;
}
return(VSConstants.S_OK);
}
/// <summary>
/// Implements <see cref="IVsToolboxUser.IsSupported"/>
/// </summary>
protected int IsSupported(OLE.IDataObject pDO)
{
IDataObject data = pDO as IDataObject;
if (data == null)
{
data = new DataObject(pDO);
}
IToolboxService toolboxService;
if (null != (toolboxService = ToolboxService))
{
if (toolboxService.IsSupported(data, ToolboxFilterManager.ToolboxFilters))
{
return(VSConstants.S_OK);
}
}
return(VSConstants.E_FAIL);
}
/// <summary>
/// Called as soon as the mouse drags an item over a new hierarchy or hierarchy window
/// </summary>
/// <param name="pDataObject">reference to interface IDataObject of the item being dragged</param>
/// <param name="grfKeyState">Current state of the keyboard and the mouse modifier keys. See docs for a list of possible values</param>
/// <param name="itemid">Item identifier for the item currently bbeing dragged</param>
/// <param name="pdwEffect">On entry, a pointer to the current DropEffect. On return, must contain the
/// new valid DropEffect</param>
/// <returns>S_OK if the method succeeds</returns>
public override int DragEnter(IOleDataObject pDataObject, uint grfKeyState, uint itemid, ref uint pdwEffect)
{
pdwEffect = (uint)DropEffect.None;
if (this.SourceDraggedOrCutOrCopied)
{
return VSConstants.S_OK;
}
else
{
this.dataObject = (IOleDataObject)pDataObject;
}
this.dropDataType = QueryDropDataType(pDataObject);
if (this.dropDataType != DropDataType.None)
{
pdwEffect = (uint)QueryDropEffect(this.dropDataType, grfKeyState);
}
return VSConstants.S_OK;
}
/// <summary>
/// Called as soon as the mouse drags an item over a new hierarchy or hierarchy window
/// </summary>
/// <param name="pDataObject">reference to interface IDataObject of the item being dragged</param>
/// <param name="grfKeyState">Current state of the keyboard and the mouse modifier keys. See docs for a list of possible values</param>
/// <param name="itemid">Item identifier for the item currently being dragged</param>
/// <param name="pdwEffect">On entry, a pointer to the current DropEffect. On return, must contain the new valid DropEffect</param>
/// <returns>If the method succeeds, it returns S_OK. If it fails, it returns an error code.</returns>
public override int DragEnter(IOleDataObject pDataObject, uint grfKeyState, uint itemid, ref uint pdwEffect)
{
pdwEffect = (uint)DropEffect.None;
// changed from MPFProj:
// http://mpfproj10.codeplex.com/WorkItem/View.aspx?WorkItemId=8145
/*
if(this.SourceDraggedOrCutOrCopied)
{
return VSConstants.S_OK;
}*/
this.dropDataType = QueryDropDataType(pDataObject);
if (this.dropDataType != DropDataType.None)
{
pdwEffect = (uint)this.QueryDropEffect(this.dropDataType, grfKeyState);
}
return VSConstants.S_OK;
}
public static string GetSourceProjectPath(Microsoft.VisualStudio.OLE.Interop.IDataObject dataObject)
{
string projectPath = null;
FORMATETC fmtetc = CreateFormatEtc(CF_VSPROJECTCLIPDESCRIPTOR);
if (QueryGetData(dataObject, ref fmtetc) == VSConstants.S_OK)
{
STGMEDIUM stgmedium = DragDropHelper.GetData(dataObject, ref fmtetc);
if (stgmedium.tymed == (uint)TYMED.TYMED_HGLOBAL && stgmedium.unionmember != IntPtr.Zero)
{
// We are releasing the cloned hglobal here.
using (SafeGlobalAllocHandle dropInfoHandle = new SafeGlobalAllocHandle(stgmedium.unionmember, true))
{
projectPath = GetData(dropInfoHandle);
}
}
}
return(projectPath);
}
/// <summary>
/// Returns information about one or more of the items being dragged
/// </summary>
/// <param name="pdwOKEffects">Pointer to a DWORD value describing the effects displayed while the item is being dragged,
/// such as cursor icons that change during the drag-and-drop operation.
/// For example, if the item is dragged over an invalid target point
/// (such as the item's original location), the cursor icon changes to a circle with a line through it.
/// Similarly, if the item is dragged over a valid target point, the cursor icon changes to a file or folder.</param>
/// <param name="ppDataObject">Pointer to the IDataObject interface on the item being dragged.
/// This data object contains the data being transferred in the drag-and-drop operation.
/// If the drop occurs, then this data object (item) is incorporated into the target hierarchy or hierarchy window.</param>
/// <param name="ppDropSource">Pointer to the IDropSource interface of the item being dragged.</param>
/// <returns>If the method succeeds, it returns S_OK. If it fails, it returns an error code.</returns>
public override int GetDropInfo(out uint pdwOKEffects, out IOleDataObject ppDataObject, out IDropSource ppDropSource)
{
//init out params
pdwOKEffects = (uint)DropEffect.None;
ppDataObject = null;
ppDropSource = null;
IOleDataObject dataObject = PackageSelectionDataObject(false);
if (dataObject == null)
{
return(VSConstants.E_NOTIMPL);
}
this.SourceDraggedOrCutOrCopied = true;
pdwOKEffects = (uint)(DropEffect.Move | DropEffect.Copy);
ppDataObject = dataObject;
return(VSConstants.S_OK);
}
public static int QueryGetData(Microsoft.VisualStudio.OLE.Interop.IDataObject pDataObject, ref FORMATETC fmtetc)
{
int returnValue = VSConstants.E_FAIL;
FORMATETC[] af = new FORMATETC[1];
af[0] = fmtetc;
try
{
int result = ErrorHandler.ThrowOnFailure(pDataObject.QueryGetData(af));
if (result == VSConstants.S_OK)
{
fmtetc = af[0];
returnValue = VSConstants.S_OK;
}
}
catch (COMException e)
{
XSharpProjectPackage.Instance.DisplayException(e);
returnValue = e.ErrorCode;
}
return(returnValue);
}
/// <summary>
/// Process dataobject from Drag/Drop/Cut/Copy/Paste operation
/// </summary>
/// <remarks>The targetNode is set if the method is called from a drop operation, otherwise it is null</remarks>
internal DropDataType ProcessSelectionDataObject(IOleDataObject dataObject, HierarchyNode targetNode)
{
DropDataType dropDataType = DropDataType.None;
bool isWindowsFormat = false;
// Try to get it as a directory based project.
List<string> filesDropped = DragDropHelper.GetDroppedFiles(DragDropHelper.CF_VSSTGPROJECTITEMS, dataObject, out dropDataType);
if (filesDropped.Count == 0)
{
filesDropped = DragDropHelper.GetDroppedFiles(DragDropHelper.CF_VSREFPROJECTITEMS, dataObject, out dropDataType);
}
if (filesDropped.Count == 0)
{
filesDropped = DragDropHelper.GetDroppedFiles(NativeMethods.CF_HDROP, dataObject, out dropDataType);
isWindowsFormat = (filesDropped.Count > 0);
}
if (dropDataType != DropDataType.None && filesDropped.Count > 0)
{
string[] filesDroppedAsArray = filesDropped.ToArray();
HierarchyNode node = (targetNode == null) ? this : targetNode;
// For directory based projects the content of the clipboard is a double-NULL terminated list of Projref strings.
if (isWindowsFormat)
{
// This is the code path when source is windows explorer
VSADDRESULT[] vsaddresults = new VSADDRESULT[1];
vsaddresults[0] = VSADDRESULT.ADDRESULT_Failure;
int addResult = AddItem(node.ID, VSADDITEMOPERATION.VSADDITEMOP_OPENFILE, null, (uint)filesDropped.Count, filesDroppedAsArray, IntPtr.Zero, vsaddresults);
if (addResult != VSConstants.S_OK && addResult != VSConstants.S_FALSE && addResult != (int)OleConstants.OLECMDERR_E_CANCELED
&& vsaddresults[0] != VSADDRESULT.ADDRESULT_Success)
{
ErrorHandler.ThrowOnFailure(addResult);
}
return dropDataType;
}
else
{
if (AddFilesFromProjectReferences(node, filesDroppedAsArray))
{
return dropDataType;
}
}
}
// If we reached this point then the drop data must be set to None.
// Otherwise the OnPaste will be called with a valid DropData and that would actually delete the item.
return DropDataType.None;
}
/// <summary>
/// The item picked.
/// </summary>
/// <param name="pDO">
/// The p do.
/// </param>
/// <returns>
/// The <see cref="int"/>.
/// </returns>
public int ItemPicked(IDataObject pDO)
{
// Create a OleDataObject from the input interface.
var oleData = new OleDataObject(pDO);
// Check if the picked item is the one we can paste.
if (oleData.GetDataPresent(DataFormats.UnicodeText))
{
object o = null;
this.EditorControl.TextSelection.Paste(ref o, 0);
}
return VSConstants.S_OK;
}
/// <summary>
/// Handle the Cut operation to the clipboard
/// </summary>
protected internal override int CutToClipboard()
{
int returnValue = (int)OleConstants.OLECMDERR_E_NOTSUPPORTED;
try
{
this.RegisterClipboardNotifications(true);
// Create our data object and change the selection to show item(s) being cut
this.dataObject = this.PackageSelectionDataObject(true);
if (this.dataObject != null)
{
this.SourceDraggedOrCutOrCopied = true;
// Add our cut item(s) to the clipboard
ErrorHandler.ThrowOnFailure(UnsafeNativeMethods.OleSetClipboard(dataObject));
// Inform VS (UiHierarchyWindow) of the cut
IVsUIHierWinClipboardHelper clipboardHelper = (IVsUIHierWinClipboardHelper)GetService(typeof(SVsUIHierWinClipboardHelper));
if (clipboardHelper == null)
{
return VSConstants.E_FAIL;
}
returnValue = ErrorHandler.ThrowOnFailure(clipboardHelper.Cut(dataObject));
}
}
catch (COMException e)
{
Trace.WriteLine("Exception : " + e.Message);
returnValue = e.ErrorCode;
}
return returnValue;
}
public override int DragOver(uint grfKeyState, uint itemid, ref uint pdwEffect)
{
if (this.dataObject == null)
{
this.dataObject = PackageSelectionDataObject(false);
}
this.dropDataType = QueryDropDataType(this.dataObject);
if (this.dropDataType != DropDataType.None)
{
pdwEffect = (uint)QueryDropEffect(dropDataType, grfKeyState);
}
//We should also analyze if the node being dragged over can accept the drop
if (!CanTargetNodeAcceptDrop(itemid))
pdwEffect = (uint)DropEffect.None;
return VSConstants.S_OK;
}
/// <summary>
/// Returns a dataobject from selected nodes
/// </summary>
/// <param name="cutHighlightItems">boolean that defines if the selected items must be cut</param>
/// <returns>data object for selected items</returns>
internal virtual DataObject PackageSelectionDataObject(bool cutHighlightItems)
{
this.CleanupSelectionDataObject(false, false, false);
StringBuilder sb = new StringBuilder();
DataObject dataObject = null;
try
{
IList<HierarchyNode> selectedNodes = this.GetSelectedNodes();
if (selectedNodes != null)
{
this.InstantiateItemsDraggedOrCutOrCopiedList();
StringBuilder selectionContent = null;
// If there is a selection package the data
if (selectedNodes.Count > 1)
{
foreach (HierarchyNode node in selectedNodes)
{
selectionContent = node.PrepareSelectedNodesForClipBoard();
if (selectionContent != null)
{
sb.Append(selectionContent);
}
}
}
else if (selectedNodes.Count == 1)
{
HierarchyNode selectedNode = selectedNodes[0];
selectionContent = selectedNode.PrepareSelectedNodesForClipBoard();
if (selectionContent != null)
{
sb.Append(selectionContent);
}
}
}
// Add the project items first.
IntPtr ptrToItems = this.PackageSelectionData(sb, false);
if (ptrToItems == IntPtr.Zero)
{
return null;
}
FORMATETC fmt = DragDropHelper.CreateFormatEtc(DragDropHelper.CF_VSSTGPROJECTITEMS);
dataObject = new DataObject();
dataObject.SetData(fmt, ptrToItems);
// Now add the project path that sourced data. We just write the project file path.
IntPtr ptrToProjectPath = this.PackageSelectionData(new StringBuilder(this.GetMkDocument()), true);
if (ptrToProjectPath != IntPtr.Zero)
{
dataObject.SetData(DragDropHelper.CreateFormatEtc(DragDropHelper.CF_VSPROJECTCLIPDESCRIPTOR), ptrToProjectPath);
}
if (cutHighlightItems)
{
bool first = true;
IVsUIHierarchyWindow w = UIHierarchyUtilities.GetUIHierarchyWindow(this.site, HierarchyNode.SolutionExplorer);
foreach (HierarchyNode node in this.ItemsDraggedOrCutOrCopied)
{
ErrorHandler.ThrowOnFailure(w.ExpandItem((IVsUIHierarchy)this, node.ID, first ? EXPANDFLAGS.EXPF_CutHighlightItem : EXPANDFLAGS.EXPF_AddCutHighlightItem));
first = false;
}
}
}
catch (COMException e)
{
Trace.WriteLine("Exception : " + e.Message);
dataObject = null;
}
return dataObject;
}
/// <summary>
/// Allows the drag source to prompt to save unsaved items being dropped.
/// Notifies the source hierarchy that information dragged from it is about to be dropped on a target.
/// This method is called immediately after the mouse button is released on a drop.
/// </summary>
/// <param name="o">Reference to the IDataObject interface on the item being dragged.
/// This data object contains the data being transferred in the drag-and-drop operation.
/// If the drop occurs, then this data object (item) is incorporated into the hierarchy window of the new hierarchy.</param>
/// <param name="dwEffect">Current state of the keyboard and the mouse modifier keys.</param>
/// <param name="fCancelDrop">If true, then the drop is cancelled by the source hierarchy. If false, then the drop can continue.</param>
/// <returns>If the method succeeds, it returns S_OK. If it fails, it returns an error code. </returns>
public override int OnBeforeDropNotify(IOleDataObject o, uint dwEffect, out int fCancelDrop)
{
// If there is nothing to be dropped just return that drop should be cancelled.
if (this.ItemsDraggedOrCutOrCopied == null)
{
fCancelDrop = 1;
return(VSConstants.S_OK);
}
fCancelDrop = 0;
bool dirty = false;
foreach (HierarchyNode node in this.ItemsDraggedOrCutOrCopied)
{
bool isDirty, isOpen, isOpenedByUs;
uint docCookie;
IVsPersistDocData ppIVsPersistDocData;
DocumentManager manager = node.GetDocumentManager();
if (manager != null)
{
manager.GetDocInfo(out isOpen, out isDirty, out isOpenedByUs, out docCookie, out ppIVsPersistDocData);
if (isDirty && isOpenedByUs)
{
dirty = true;
break;
}
}
}
// if there are no dirty docs we are ok to proceed
if (!dirty)
{
return(VSConstants.S_OK);
}
// Prompt to save if there are dirty docs
string message = SR.GetString(SR.SaveModifiedDocuments, CultureInfo.CurrentUICulture);
string title = string.Empty;
OLEMSGICON icon = OLEMSGICON.OLEMSGICON_WARNING;
OLEMSGBUTTON buttons = OLEMSGBUTTON.OLEMSGBUTTON_YESNOCANCEL;
OLEMSGDEFBUTTON defaultButton = OLEMSGDEFBUTTON.OLEMSGDEFBUTTON_FIRST;
int result = VsShellUtilities.ShowMessageBox(Site, title, message, icon, buttons, defaultButton);
switch (result)
{
case NativeMethods.IDYES:
break;
case NativeMethods.IDNO:
return(VSConstants.S_OK);
case NativeMethods.IDCANCEL: goto default;
default:
fCancelDrop = 1;
return(VSConstants.S_OK);
}
// Save all dirty documents
foreach (HierarchyNode node in this.ItemsDraggedOrCutOrCopied)
{
DocumentManager manager = node.GetDocumentManager();
if (manager != null)
{
manager.Save(true);
}
}
return(VSConstants.S_OK);
}
/// <summary>
/// Called as soon as the mouse drags an item over a new hierarchy or hierarchy window
/// </summary>
/// <param name="dataObject">reference to interface IDataObject of the item being dragged</param>
/// <param name="keyState">Current state of the keyboard and the mouse modifier keys. See docs for a list of possible values</param>
/// <param name="itemId">Item identifier for the item currently being dragged</param>
/// <param name="effect">On entry, a pointer to the current DropEffect. On return, must contain the new valid DropEffect</param>
/// <returns>If the method succeeds, it returns S_OK. If it fails, it returns an error code.</returns>
public override int DragEnter(IOleDataObject dataObject, uint keyState, uint itemId, ref DropEffects effect)
{
effect = DropEffects.None;
if(this.SourceDraggedOrCutOrCopied)
{
return VSConstants.S_OK;
}
this._dropDataType = QueryDropDataType(dataObject);
if(this._dropDataType != DropDataType.None)
{
effect = this.QueryDropEffect(this._dropDataType, keyState);
}
return VSConstants.S_OK;
}
/// <summary>
/// Process dataobject from Drag/Drop/Cut/Copy/Paste operation
///
/// drop indicates if it is a drag/drop or a cut/copy/paste.
/// </summary>
/// <remarks>The targetNode is set if the method is called from a drop operation, otherwise it is null</remarks>
internal DropDataType ProcessSelectionDataObject(IOleDataObject dataObject, HierarchyNode targetNode, bool drop, DropEffect dropEffect) {
Utilities.ArgumentNotNull("targetNode", targetNode);
DropDataType dropDataType = DropDataType.None;
bool isWindowsFormat = false;
// Try to get it as a directory based project.
List<string> filesDropped = DragDropHelper.GetDroppedFiles(DragDropHelper.CF_VSSTGPROJECTITEMS, dataObject, out dropDataType);
if (filesDropped.Count == 0) {
filesDropped = DragDropHelper.GetDroppedFiles(DragDropHelper.CF_VSREFPROJECTITEMS, dataObject, out dropDataType);
}
if (filesDropped.Count == 0) {
filesDropped = DragDropHelper.GetDroppedFiles(NativeMethods.CF_HDROP, dataObject, out dropDataType);
isWindowsFormat = (filesDropped.Count > 0);
}
if (dropDataType != DropDataType.None && filesDropped.Count > 0) {
string[] filesDroppedAsArray = filesDropped.ToArray();
HierarchyNode node = targetNode;
// For directory based projects the content of the clipboard is a double-NULL terminated list of Projref strings.
if (isWindowsFormat) {
DropFilesOrFolders(filesDroppedAsArray, node);
return dropDataType;
} else {
if (AddFilesFromProjectReferences(node, filesDroppedAsArray, drop, dropEffect)) {
return dropDataType;
}
}
}
// If we reached this point then the drop data must be set to None.
// Otherwise the OnPaste will be called with a valid DropData and that would actually delete the item.
return DropDataType.None;
}
/// <summary>
/// Returns information about one or more of the items being dragged
/// </summary>
/// <param name="effects">Pointer to a DWORD value describing the effects displayed while the item is being dragged,
/// such as cursor icons that change during the drag-and-drop operation.
/// For example, if the item is dragged over an invalid target point
/// (such as the item's original location), the cursor icon changes to a circle with a line through it.
/// Similarly, if the item is dragged over a valid target point, the cursor icon changes to a file or folder.</param>
/// <param name="dataObject">Pointer to the IDataObject interface on the item being dragged.
/// This data object contains the data being transferred in the drag-and-drop operation.
/// If the drop occurs, then this data object (item) is incorporated into the target hierarchy or hierarchy window.</param>
/// <param name="dropSource">Pointer to the IDropSource interface of the item being dragged.</param>
/// <returns>If the method succeeds, it returns S_OK. If it fails, it returns an error code.</returns>
public override int GetDropInfo(out DropEffects effects, out IOleDataObject dataObject, out IDropSource dropSource)
{
//init out params
effects = (uint)DropEffects.None;
dataObject = null;
dropSource = null;
IOleDataObject selectionDataObject = PackageSelectionDataObject(false);
if(selectionDataObject == null)
{
return VSConstants.E_NOTIMPL;
}
this.SourceDraggedOrCutOrCopied = true;
effects = DropEffects.Move | DropEffects.Copy;
dataObject = selectionDataObject;
return VSConstants.S_OK;
}
/// <summary>
/// The is supported.
/// </summary>
/// <param name="pDO">
/// The p do.
/// </param>
/// <returns>
/// The <see cref="int"/>.
/// </returns>
public int IsSupported(IDataObject pDO)
{
// Create a OleDataObject from the input interface.
var oleData = new OleDataObject(pDO);
// && EditorControl.RichTextBoxControl.CanPaste(DataFormats.GetFormat(DataFormats.UnicodeText))
// Check if the data object is of type UnicodeText.
if (oleData.GetDataPresent(DataFormats.UnicodeText))
{
return VSConstants.S_OK;
}
// In all the other cases return S_FALSE
return VSConstants.S_FALSE;
}
/// <summary>
/// After a drop or paste, will use the dwEffects
/// to determine whether we need to clean up the source nodes or not. If
/// justCleanup is set, it only does the cleanup work.
/// </summary>
internal void CleanupSelectionDataObject(bool dropped, bool cut, bool moved, bool justCleanup)
{
if (this.ItemsDraggedOrCutOrCopied == null || this.ItemsDraggedOrCutOrCopied.Count == 0)
{
return;
}
try
{
IVsUIHierarchyWindow w = UIHierarchyUtilities.GetUIHierarchyWindow(this.site, HierarchyNode.SolutionExplorer);
foreach (HierarchyNode node in this.ItemsDraggedOrCutOrCopied)
{
if ((moved && (cut || dropped) && !justCleanup))
{
// do not close it if the doc is dirty or we do not own it
bool isDirty, isOpen, isOpenedByUs;
uint docCookie;
IVsPersistDocData ppIVsPersistDocData;
DocumentManager manager = node.GetDocumentManager();
if (manager != null)
{
manager.GetDocInfo(out isOpen, out isDirty, out isOpenedByUs, out docCookie, out ppIVsPersistDocData);
if (isDirty || (isOpen && !isOpenedByUs))
{
continue;
}
// close it if opened
if (isOpen)
{
manager.Close(__FRAMECLOSE.FRAMECLOSE_NoSave);
}
}
node.Remove(true);
}
else if (w != null)
{
ErrorHandler.ThrowOnFailure(w.ExpandItem((IVsUIHierarchy)this, node.ID, EXPANDFLAGS.EXPF_UnCutHighlightItem));
}
}
}
finally
{
// Now delete the memory allocated by the packaging of datasources.
// If we just did a cut, or we are told to cleanup, then we need to free the data object. Otherwise, we leave it
// alone so that you can continue to paste the data in new locations.
if (moved || cut || justCleanup)
{
this.ItemsDraggedOrCutOrCopied.Clear();
this.CleanAndFlushClipboard();
}
this.dataObject = null;
this.dropDataType = DropDataType.None;
}
}
/// <summary>
/// Returns information about one or more of the items being dragged
/// </summary>
/// <param name="pdwOKEffects">Pointer to a DWORD value describing the effects displayed while the item is being dragged,
/// such as cursor icons that change during the drag-and-drop operation.
/// For example, if the item is dragged over an invalid target point
/// (such as the item's original location), the cursor icon changes to a circle with a line through it.
/// Similarly, if the item is dragged over a valid target point, the cursor icon changes to a file or folder.</param>
/// <param name="ppDataObject">Pointer to the IDataObject interface on the item being dragged.
/// This data object contains the data being transferred in the drag-and-drop operation.
/// If the drop occurs, then this data object (item) is incorporated into the target hierarchy or hierarchy window.</param>
/// <param name="ppDropSource">Pointer to the IDropSource interface of the item being dragged.</param>
/// <returns>If the method succeeds, it returns S_OK. If it fails, it returns an error code.</returns>
public override int GetDropInfo(out uint pdwOKEffects, out IOleDataObject ppDataObject, out IDropSource ppDropSource)
{
//init out params
pdwOKEffects = (uint)DropEffect.None;
ppDataObject = null;
ppDropSource = null;
IOleDataObject dataObject = PackageSelectionDataObject(false);
if (dataObject == null)
{
return VSConstants.E_NOTIMPL;
}
this.SourceDraggedOrCutOrCopied = true;
this.SourceDragged = true;
pdwOKEffects = (uint)(DropEffect.Move | DropEffect.Copy);
ppDataObject = dataObject;
return VSConstants.S_OK;
}
/// <summary>
/// Get the dropdatatype from the dataobject
/// </summary>
/// <param name="pDataObject">The dataobject to be analysed for its format</param>
/// <returns>dropdatatype or none if dataobject does not contain known format</returns>
internal static DropDataType QueryDropDataType(IOleDataObject pDataObject)
{
if (pDataObject == null)
{
return DropDataType.None;
}
// known formats include File Drops (as from WindowsExplorer),
// VSProject Reference Items and VSProject Storage Items.
FORMATETC fmt = DragDropHelper.CreateFormatEtc(NativeMethods.CF_HDROP);
if (DragDropHelper.QueryGetData(pDataObject, ref fmt) == VSConstants.S_OK)
{
return DropDataType.Shell;
}
fmt.cfFormat = DragDropHelper.CF_VSREFPROJECTITEMS;
if (DragDropHelper.QueryGetData(pDataObject, ref fmt) == VSConstants.S_OK)
{
// Data is from a Ref-based project.
return DropDataType.VsRef;
}
fmt.cfFormat = DragDropHelper.CF_VSSTGPROJECTITEMS;
if (DragDropHelper.QueryGetData(pDataObject, ref fmt) == VSConstants.S_OK)
{
return DropDataType.VsStg;
}
return DropDataType.None;
}
/// <summary>
/// Determines whether the Toolbox user supports the referenced data object.
/// </summary>
/// <param name="pDO">Data object to be supported.</param>
/// <returns>If the method succeeds, it returns S_OK. If it fails, it returns an error code.</returns>
int IVsToolboxUser.IsSupported(IOleDataObject pDO)
{
// Create a OleDataObject from the input interface.
OleDataObject oleData = new OleDataObject(pDO);
// Check if the data object is of type MyToolboxData.
if (oleData.GetDataPresent(typeof(ToolboxItemData)))
return VSConstants.S_OK;
// In all the other cases return S_FALSE
return VSConstants.S_FALSE;
}
/// <summary>
/// Sends notification that an item in the Toolbox is selected through a click, or by pressing ENTER.
/// </summary>
/// <param name="pDO">Data object that is selected.</param>
/// <returns>If the method succeeds, it returns S_OK. If it fails, it returns an error code.</returns>
int IVsToolboxUser.ItemPicked(IOleDataObject pDO)
{
// Create a OleDataObject from the input interface.
OleDataObject oleData = new OleDataObject(pDO);
// Check if the picked item is the one we added to the toolbox.
if (oleData.GetDataPresent(typeof(ToolboxItemData)))
{
Debug.WriteLine("MyToolboxItemData selected from the toolbox");
ToolboxItemData myData = (ToolboxItemData)oleData.GetData(typeof(ToolboxItemData));
editorControl.Text += myData.Content;
}
return VSConstants.S_OK;
}
internal Ole2BclDataObject(BclComTypes.IDataObject bclData)
{
if (null == bclData)
throw new ArgumentNullException("System.Runtime.InteropServices.ComTypes.IDataObject");
//this.oleData = bclData as OleInterop.IDataObject;
this.oleData = null;
this.bclData = bclData;
}
/// <summary>
/// Called when one or more items are dropped into the target hierarchy or hierarchy window when the mouse button is released.
/// </summary>
/// <param name="pDataObject">Reference to the IDataObject interface on the item being dragged. This data object contains the data being transferred in the drag-and-drop operation.
/// If the drop occurs, then this data object (item) is incorporated into the target hierarchy or hierarchy window.</param>
/// <param name="grfKeyState">Current state of the keyboard and the mouse modifier keys. See <seealso cref="IVsHierarchyDropDataTarget"/></param>
/// <param name="itemid">Item identifier of the drop data target over which the item is being dragged</param>
/// <param name="pdwEffect">Visual effects associated with the drag-and drop-operation, such as a cursor, bitmap, and so on.
/// The value of dwEffects passed to the source object via the OnDropNotify method is the value of pdwEffects returned by the Drop method</param>
/// <returns>If the method succeeds, it returns S_OK. If it fails, it returns an error code. </returns>
public override int Drop(IOleDataObject pDataObject, uint grfKeyState, uint itemid, ref uint pdwEffect)
{
if (pDataObject == null)
{
return VSConstants.E_INVALIDARG;
}
pdwEffect = (uint)DropEffect.None;
// Get the node that is being dragged over and ask it which node should handle this call
HierarchyNode targetNode = NodeFromItemId(itemid);
if (targetNode != null)
{
targetNode = targetNode.GetDragTargetHandlerNode();
}
else
{
// There is no target node. The drop can not be completed.
return VSConstants.S_FALSE;
}
int returnValue;
try
{
this.isInPasteOrDrop = true;
DropDataType dropDataType = DropDataType.None;
dropDataType = ProcessSelectionDataObject(pDataObject, targetNode, grfKeyState);
pdwEffect = (uint)this.QueryDropEffect(dropDataType, grfKeyState);
// If it is a drop from windows and we get any kind of error we return S_FALSE and dropeffect none. This
// prevents bogus messages from the shell from being displayed
returnValue = (dropDataType != DropDataType.Shell) ? VSConstants.E_FAIL : VSConstants.S_OK;
}
catch (System.IO.FileNotFoundException e)
{
Trace.WriteLine("Exception : " + e.Message);
if (!Utilities.IsInAutomationFunction(this.Site))
{
string message = e.Message;
string title = string.Empty;
OLEMSGICON icon = OLEMSGICON.OLEMSGICON_CRITICAL;
OLEMSGBUTTON buttons = OLEMSGBUTTON.OLEMSGBUTTON_OK;
OLEMSGDEFBUTTON defaultButton = OLEMSGDEFBUTTON.OLEMSGDEFBUTTON_FIRST;
VsShellUtilities.ShowMessageBox(this.Site, title, message, icon, buttons, defaultButton);
}
returnValue = VSConstants.E_FAIL;
}
finally
{
this.isInPasteOrDrop = false;
this.dropAsCopy = false;
}
return returnValue;
}
internal Ole2BclDataObject(OleInterop.IDataObject oleData)
{
if (null == oleData)
throw new ArgumentNullException("Microsoft.VisualStudio.OLE.Interop.IDataObject");
this.oleData = oleData;
//this.bclData = oleData as BclComTypes.IDataObject;
this.bclData = null;
}
/// <summary>
/// Allows the drag source to prompt to save unsaved items being dropped.
/// Notifies the source hierarchy that information dragged from it is about to be dropped on a target.
/// This method is called immediately after the mouse button is released on a drop.
/// </summary>
/// <param name="o">Reference to the IDataObject interface on the item being dragged.
/// This data object contains the data being transferred in the drag-and-drop operation.
/// If the drop occurs, then this data object (item) is incorporated into the hierarchy window of the new hierarchy.</param>
/// <param name="dwEffect">Current state of the keyboard and the mouse modifier keys.</param>
/// <param name="fCancelDrop">If true, then the drop is cancelled by the source hierarchy. If false, then the drop can continue.</param>
/// <returns>If the method succeeds, it returns S_OK. If it fails, it returns an error code. </returns>
public override int OnBeforeDropNotify(IOleDataObject o, uint dwEffect, out int fCancelDrop)
{
// If there is nothing to be dropped just return that drop should be cancelled.
if (this.ItemsDraggedOrCutOrCopied == null)
{
fCancelDrop = 1;
return VSConstants.S_OK;
}
fCancelDrop = 0;
bool dirty = false;
foreach (HierarchyNode node in this.ItemsDraggedOrCutOrCopied)
{
bool isDirty, isOpen, isOpenedByUs;
uint docCookie;
IVsPersistDocData ppIVsPersistDocData;
DocumentManager manager = node.GetDocumentManager();
if (manager != null)
{
manager.GetDocInfo(out isOpen, out isDirty, out isOpenedByUs, out docCookie, out ppIVsPersistDocData);
if (isDirty && isOpenedByUs)
{
dirty = true;
break;
}
}
}
// if there are no dirty docs we are ok to proceed
if (!dirty)
{
return VSConstants.S_OK;
}
// Prompt to save if there are dirty docs
string message = SR.GetString(SR.SaveModifiedDocuments, CultureInfo.CurrentUICulture);
string title = string.Empty;
OLEMSGICON icon = OLEMSGICON.OLEMSGICON_WARNING;
OLEMSGBUTTON buttons = OLEMSGBUTTON.OLEMSGBUTTON_YESNOCANCEL;
OLEMSGDEFBUTTON defaultButton = OLEMSGDEFBUTTON.OLEMSGDEFBUTTON_FIRST;
int result = VsShellUtilities.ShowMessageBox(Site, title, message, icon, buttons, defaultButton);
switch (result)
{
case NativeMethods.IDYES:
break;
case NativeMethods.IDNO:
return VSConstants.S_OK;
case NativeMethods.IDCANCEL: goto default;
default:
fCancelDrop = 1;
return VSConstants.S_OK;
}
// Save all dirty documents
foreach (HierarchyNode node in this.ItemsDraggedOrCutOrCopied)
{
DocumentManager manager = node.GetDocumentManager();
if (manager != null)
{
manager.Save(true);
}
}
return VSConstants.S_OK;
}
public static bool AttemptVsFormat(HierarchyNode activeNode, ushort cfFormat, Microsoft.VisualStudio.OLE.Interop.IDataObject pDataObject, uint grfKeyState, out DropDataType pddt)
{
pddt = DropDataType.None;
FORMATETC fmtetc = new FORMATETC();
fmtetc.cfFormat = cfFormat;
fmtetc.ptd = IntPtr.Zero;
fmtetc.dwAspect = (uint)DVASPECT.DVASPECT_CONTENT;
fmtetc.lindex = -1;
fmtetc.tymed = (uint)TYMED.TYMED_HGLOBAL;
bool hasData = false;
try
{
QueryGetData(pDataObject, ref fmtetc);
hasData = true;
}
catch
{
}
if (hasData)
{
try
{
STGMEDIUM stgmedium = GetData(pDataObject, ref fmtetc);
if (stgmedium.tymed == (uint)TYMED.TYMED_HGLOBAL)
{
IntPtr hDropInfo = stgmedium.unionmember;
if (hDropInfo != IntPtr.Zero)
{
pddt = DropDataType.VsRef;
try
{
activeNode.AddFiles(UtilGetFilesFromPROJITEMDrop(hDropInfo));
}
finally
{
Marshal.FreeHGlobal(hDropInfo);
}
return(true);
}
}
}
catch (Exception e)
{
Trace.WriteLine("Exception:" + e.Message);
}
catch
{
Trace.WriteLine("Exception");
}
}
return(false);
}
/// <summary>
/// Process dataobject from Drag/Drop/Cut/Copy/Paste operation
/// </summary>
/// <remarks>The targetNode is set if the method is called from a drop operation, otherwise it is null</remarks>
internal DropDataType ProcessSelectionDataObject(IOleDataObject dataObject, HierarchyNode targetNode, uint grfKeyState)
{
DropDataType dropDataType = DropDataType.None;
bool isWindowsFormat = false;
// Try to get it as a directory based project.
List<string> filesDropped = DragDropHelper.GetDroppedFiles(DragDropHelper.CF_VSSTGPROJECTITEMS, dataObject, out dropDataType);
if (filesDropped.Count == 0)
{
filesDropped = DragDropHelper.GetDroppedFiles(DragDropHelper.CF_VSREFPROJECTITEMS, dataObject, out dropDataType);
}
if (filesDropped.Count == 0)
{
filesDropped = DragDropHelper.GetDroppedFiles(NativeMethods.CF_HDROP, dataObject, out dropDataType);
isWindowsFormat = (filesDropped.Count > 0);
}
dropItems.Clear();
if (dropDataType != DropDataType.None && filesDropped.Count > 0)
{
bool saveAllowDuplicateLinks = this.AllowDuplicateLinks;
try
{
DropEffect dropEffect = this.QueryDropEffect(dropDataType, grfKeyState);
this.dropAsCopy = dropEffect == DropEffect.Copy;
if (dropEffect == DropEffect.Move && this.SourceDraggedOrCutOrCopied)
{
// Temporarily allow duplicate links to enable cut-paste or drag-move of links within the project.
// This won't happen when the source is another project because this.SourceDraggedOrCutOrCopied won't get set.
this.AllowDuplicateLinks = true;
}
string[] filesDroppedAsArray = filesDropped.ToArray();
HierarchyNode node = (targetNode == null) ? this : targetNode;
// For directory based projects the content of the clipboard is a double-NULL terminated list of Projref strings.
if (isWindowsFormat)
{
// This is the code path when source is windows explorer
VSADDRESULT[] vsaddresults = new VSADDRESULT[1];
vsaddresults[0] = VSADDRESULT.ADDRESULT_Failure;
int addResult = AddItem(node.ID, VSADDITEMOPERATION.VSADDITEMOP_OPENFILE, null, (uint)filesDropped.Count, filesDroppedAsArray, IntPtr.Zero, vsaddresults);
if (addResult != VSConstants.S_OK && addResult != VSConstants.S_FALSE && addResult != (int)OleConstants.OLECMDERR_E_CANCELED
&& vsaddresults[0] != VSADDRESULT.ADDRESULT_Success)
{
ErrorHandler.ThrowOnFailure(addResult);
}
return dropDataType;
}
else
{
if (AddFilesFromProjectReferences(node, filesDroppedAsArray, (uint)dropEffect))
{
return dropDataType;
}
}
}
finally
{
this.AllowDuplicateLinks = saveAllowDuplicateLinks;
}
}
this.dataWasCut = false;
// If we reached this point then the drop data must be set to None.
// Otherwise the OnPaste will be called with a valid DropData and that would actually delete the item.
return DropDataType.None;
}
/// <summary>
/// The get selection data object.
/// </summary>
/// <param name="ppIDataObject">
/// The pp i data object.
/// </param>
/// <returns>
/// The <see cref="int"/>.
/// </returns>
int IVsTextView.GetSelectionDataObject(out IDataObject ppIDataObject)
{
ppIDataObject = null;
return VSConstants.E_NOTIMPL;
}