// Token: 0x060085B9 RID: 34233 RVA: 0x0024A67C File Offset: 0x0024887C
private void SourceDoDragDrop(ITextSelection selection, IDataObject dataObject)
{
DragDropEffects dragDropEffects = DragDropEffects.Copy;
if (!this._textEditor.IsReadOnly)
{
dragDropEffects |= DragDropEffects.Move;
}
DragDropEffects dragDropEffects2 = DragDropEffects.None;
try
{
dragDropEffects2 = DragDrop.DoDragDrop(this._textEditor.UiScope, dataObject, dragDropEffects);
}
catch (COMException ex) when(ex.HResult == -2147418113)
{
}
if (!this._textEditor.IsReadOnly && dragDropEffects2 == DragDropEffects.Move && this._dragSourceTextRange != null && !this._dragSourceTextRange.IsEmpty)
{
using (selection.DeclareChangeBlock())
{
this._dragSourceTextRange.Text = string.Empty;
}
}
this._dragSourceTextRange = null;
if (!this._textEditor.IsReadOnly)
{
BindingExpressionBase bindingExpressionBase = BindingOperations.GetBindingExpressionBase(this._textEditor.UiScope, TextBox.TextProperty);
if (bindingExpressionBase != null)
{
bindingExpressionBase.UpdateSource();
bindingExpressionBase.UpdateTarget();
}
}
}
// Token: 0x060085BF RID: 34239 RVA: 0x0024AB9C File Offset: 0x00248D9C
internal void TargetOnDrop(DragEventArgs e)
{
if (!this.AllowDragDrop(e))
{
return;
}
ITextSelection selection = this._textEditor.Selection;
Invariant.Assert(selection != null);
if (e.Data == null || e.AllowedEffects == DragDropEffects.None)
{
e.Effects = DragDropEffects.None;
return;
}
if ((e.KeyStates & DragDropKeyStates.ControlKey) != DragDropKeyStates.None)
{
e.Effects = DragDropEffects.Copy;
}
else if (e.Effects != DragDropEffects.Copy)
{
e.Effects = DragDropEffects.Move;
}
if (!this._textEditor.TextView.Validate(e.GetPosition(this._textEditor.TextView.RenderScope)))
{
e.Effects = DragDropEffects.None;
return;
}
ITextPointer dropPosition = this.GetDropPosition(this._textEditor.TextView.RenderScope, e.GetPosition(this._textEditor.TextView.RenderScope));
if (dropPosition != null)
{
if (this._dragSourceTextRange != null && this._dragSourceTextRange.Start.TextContainer == selection.Start.TextContainer && !selection.IsEmpty && this.IsSelectionContainsDropPosition(selection, dropPosition))
{
selection.SetCaretToPosition(dropPosition, LogicalDirection.Backward, false, true);
e.Effects = DragDropEffects.None;
e.Handled = true;
}
else
{
using (selection.DeclareChangeBlock())
{
if ((e.Effects & DragDropEffects.Move) != DragDropEffects.None && this._dragSourceTextRange != null && this._dragSourceTextRange.Start.TextContainer == selection.Start.TextContainer)
{
this._dragSourceTextRange.Text = string.Empty;
}
selection.SetCaretToPosition(dropPosition, LogicalDirection.Backward, false, true);
e.Handled = TextEditorCopyPaste._DoPaste(this._textEditor, e.Data, true);
}
}
if (e.Handled)
{
this.Win32SetForegroundWindow();
this._textEditor.UiScope.Focus();
return;
}
e.Effects = DragDropEffects.None;
}
}
/// <summary>
/// DragEnd event handler from DragDrop behavior.
/// </summary>
private void SourceDoDragDrop(ITextSelection selection, IDataObject dataObject)
{
// Run OLE drag-drop process. It will eat all user input until the drop
DragDropEffects allowedDragDropEffects = DragDropEffects.Copy;
if (!_textEditor.IsReadOnly)
{
allowedDragDropEffects |= DragDropEffects.Move;
}
DragDropEffects resultingDragDropEffects = DragDrop.DoDragDrop( //
_textEditor.UiScope, // dragSource,
dataObject, //
allowedDragDropEffects);
// Remove source selection
if (!_textEditor.IsReadOnly && //
resultingDragDropEffects == DragDropEffects.Move && //
_dragSourceTextRange != null &&
!_dragSourceTextRange.IsEmpty)
{
// Normally we delete the source selection from OnDrop event,
// unless source and target TextBoxes are different.
// In this case the source selection is still not empty,
// which means that target was in a different TextBox.
// So we still need to delete the selected content in the source one.
// This will create an undo unit different from a dropping one,
// which is ok, because it will be in different TextBox's undo stack.
using (selection.DeclareChangeBlock())
{
// This is end of Move - we need to delete source content
_dragSourceTextRange.Text = String.Empty;
}
}
// Clean up the text range.
_dragSourceTextRange = null;
// Check the data binding expression and update the source and target if the drag source
// has the binding expression. Without this, data binding is broken after complete the
// drag-drop operation because Drop() paste the object then set the focus to the target.
// The losting focus invoke the data binding expression's Update(), but the source isn't
// updated yet before complete DoDragDrop.
if (!_textEditor.IsReadOnly)
{
BindingExpressionBase bindingExpression = BindingOperations.GetBindingExpressionBase(
_textEditor.UiScope, TextBox.TextProperty);
if (bindingExpression != null)
{
bindingExpression.UpdateSource();
bindingExpression.UpdateTarget();
}
}
}
/// <summary>
/// Called from an event reporting that the drop happened.
/// </summary>
internal void TargetOnDrop(DragEventArgs e)
{
//
if (!AllowDragDrop(e))
{
return;
}
ITextSelection selection = _textEditor.Selection;
Invariant.Assert(selection != null);
if (e.Data == null || e.AllowedEffects == DragDropEffects.None)
{
e.Effects = DragDropEffects.None;
return;
}
if ((int)(e.KeyStates & DragDropKeyStates.ControlKey) != 0)
{
e.Effects = DragDropEffects.Copy;
}
else if (e.Effects != DragDropEffects.Copy)
{
e.Effects = DragDropEffects.Move;
}
// Force a layout update on the content so the GetTextPositionFromPoint
// call following can succeed.
if (!_textEditor.TextView.Validate(e.GetPosition(_textEditor.TextView.RenderScope)))
{
e.Effects = DragDropEffects.None;
return;
}
// Get the text position from the text target point.
ITextPointer dropPosition = GetDropPosition(_textEditor.TextView.RenderScope as Visual, e.GetPosition(_textEditor.TextView.RenderScope));
if (dropPosition != null)
{
if (_dragSourceTextRange != null && _dragSourceTextRange.Start.TextContainer == selection.Start.TextContainer &&
!selection.IsEmpty && IsSelectionContainsDropPosition(selection, dropPosition))
{
// When we drop inside of selected area, we
// should not select dropped content,
// otherwise it looks for end user as if
// nothing happened.
// Set caret to this position.
selection.SetCaretToPosition(dropPosition, LogicalDirection.Backward, /*allowStopAtLineEnd:*/ false, /*allowStopNearSpace:*/ true);
// Indicate the resulting effect of an action
// Note that dropResult may stay equal to DragDropResult.Drop
e.Effects = DragDropEffects.None;
// Mark the event as handled
e.Handled = true;
}
else
{
using (selection.DeclareChangeBlock())
{
// For MaxLength filter work correctly in case
// when we dragdrop within the same TextContainer,
// we need to delete dragged content first -
// before dropping when filtering will occur.
// Note, that this will duplicate operation on
// source side, but it will be void deletion action
if ((e.Effects & DragDropEffects.Move) != 0 && //
_dragSourceTextRange != null && _dragSourceTextRange.Start.TextContainer == selection.Start.TextContainer)
{
_dragSourceTextRange.Text = String.Empty;
}
// When we drop outside of selection,
// we should ignore current selection and
// move ip into dropping point.
selection.SetCaretToPosition(dropPosition, LogicalDirection.Backward, /*allowStopAtLineEnd:*/ false, /*allowStopNearSpace:*/ true);
// _DoPaste raises a public event -- could raise recoverable exception.
e.Handled = TextEditorCopyPaste._DoPaste(_textEditor, e.Data, /*isDragDrop:*/ true);
//
}
}
if (e.Handled)
{
// Set the drop target as the foreground window.
Win32SetForegroundWindow();
// Set the focus into the drop target.
_textEditor.UiScope.Focus();
}
else
{
// When a target did not handle a drop event, we must
// prevent from deleting a content on source end -
// otherwise we'll have data loss
e.Effects = DragDropEffects.None;
}
}
}
/// <summary>
/// DragEnd event handler from DragDrop behavior.
/// </summary>
private void SourceDoDragDrop(ITextSelection selection, IDataObject dataObject)
{
// Run OLE drag-drop process. It will eat all user input until the drop
DragDropEffects allowedDragDropEffects = DragDropEffects.Copy;
if (!_textEditor.IsReadOnly)
{
allowedDragDropEffects |= DragDropEffects.Move;
}
DragDropEffects resultingDragDropEffects = DragDropEffects.None;
try
{
resultingDragDropEffects = DragDrop.DoDragDrop( //
_textEditor.UiScope, // dragSource,
dataObject, //
allowedDragDropEffects);
}
// DDVSO 685894:
// Ole32's DoDragDrop can return E_UNEXCEPTED, which comes to us as a COMException,
// if something unexpected happened during the drag and drop operation,
// e.g. the application receiving the drop failed. In this case we should
// not fail, we should catch the exception and act as if the drop wasn't allowed.
catch (COMException ex) when(ex.HResult == NativeMethods.E_UNEXPECTED)
{
}
// Remove source selection
if (!_textEditor.IsReadOnly && //
resultingDragDropEffects == DragDropEffects.Move && //
_dragSourceTextRange != null &&
!_dragSourceTextRange.IsEmpty)
{
// Normally we delete the source selection from OnDrop event,
// unless source and target TextBoxes are different.
// In this case the source selection is still not empty,
// which means that target was in a different TextBox.
// So we still need to delete the selected content in the source one.
// This will create an undo unit different from a dropping one,
// which is ok, because it will be in different TextBox's undo stack.
using (selection.DeclareChangeBlock())
{
// This is end of Move - we need to delete source content
_dragSourceTextRange.Text = String.Empty;
}
}
// Clean up the text range.
_dragSourceTextRange = null;
// Check the data binding expression and update the source and target if the drag source
// has the binding expression. Without this, data binding is broken after complete the
// drag-drop operation because Drop() paste the object then set the focus to the target.
// The losting focus invoke the data binding expression's Update(), but the source isn't
// updated yet before complete DoDragDrop.
if (!_textEditor.IsReadOnly)
{
BindingExpressionBase bindingExpression = BindingOperations.GetBindingExpressionBase(
_textEditor.UiScope, TextBox.TextProperty);
if (bindingExpression != null)
{
bindingExpression.UpdateSource();
bindingExpression.UpdateTarget();
}
}
}
/// <summary>
/// DragEnd event handler from DragDrop behavior.
/// </summary>
private void SourceDoDragDrop(ITextSelection selection, IDataObject dataObject)
{
// Run OLE drag-drop process. It will eat all user input until the drop
DragDropEffects allowedDragDropEffects = DragDropEffects.Copy;
if (!_textEditor.IsReadOnly)
{
allowedDragDropEffects |= DragDropEffects.Move;
}
DragDropEffects resultingDragDropEffects = DragDrop.DoDragDrop( //
_textEditor.UiScope, // dragSource,
dataObject, //
allowedDragDropEffects);
// Remove source selection
if (!_textEditor.IsReadOnly && //
resultingDragDropEffects == DragDropEffects.Move && //
_dragSourceTextRange != null &&
!_dragSourceTextRange.IsEmpty)
{
// Normally we delete the source selection from OnDrop event,
// unless source and target TextBoxes are different.
// In this case the source selection is still not empty,
// which means that target was in a different TextBox.
// So we still need to delete the selected content in the source one.
// This will create an undo unit different from a dropping one,
// which is ok, because it will be in different TextBox's undo stack.
using (selection.DeclareChangeBlock())
{
// This is end of Move - we need to delete source content
_dragSourceTextRange.Text = String.Empty;
}
}
// Clean up the text range.
_dragSourceTextRange = null;
// Check the data binding expression and update the source and target if the drag source
// has the binding expression. Without this, data binding is broken after complete the
// drag-drop operation because Drop() paste the object then set the focus to the target.
// The losting focus invoke the data binding expression's Update(), but the source isn't
// updated yet before complete DoDragDrop.
if (!_textEditor.IsReadOnly)
{
BindingExpressionBase bindingExpression = BindingOperations.GetBindingExpressionBase(
_textEditor.UiScope, TextBox.TextProperty);
if (bindingExpression != null)
{
bindingExpression.UpdateSource();
bindingExpression.UpdateTarget();
}
}
}
