/// <summary>
/// Paste the content data(Text, Unicode, Xaml and Rtf) to the current text selection
/// </summary>
/// <param name="This"></param>
/// <param name="dataObject">
/// data object containing data to paste
/// </param>
/// <param name="dataObjectToApply">
/// </param>
/// <param name="formatToApply">
/// </param>
/// <returns>
/// true if successful, false otherwise
/// </returns>
private static bool PasteContentData(TextEditor This, IDataObject dataObject, IDataObject dataObjectToApply, string formatToApply)
{
// CF_BITMAP - pasting a single image.
if (formatToApply == DataFormats.Bitmap && dataObjectToApply is DataObject)
{
// We check unmanaged code instead of all clipboard because in paste
// there is a high level assert for all clipboard in commandmanager.cs
if (This.AcceptsRichContent && This.Selection is TextSelection)
{
System.Windows.Media.Imaging.BitmapSource bitmapSource = GetPasteData(dataObjectToApply, DataFormats.Bitmap) as System.Windows.Media.Imaging.BitmapSource;
if (bitmapSource != null)
{
// Pack the image into a WPF container
MemoryStream packagedImage = WpfPayload.SaveImage(bitmapSource, WpfPayload.ImageBmpContentType);
// Place it onto a data object
dataObjectToApply = new DataObject();
formatToApply = DataFormats.XamlPackage;
dataObjectToApply.SetData(DataFormats.XamlPackage, packagedImage);
}
}
}
if (formatToApply == DataFormats.XamlPackage)
{
// We check unmanaged code instead of all clipboard because in paste
// there is a high level assert for all clipboard in commandmanager.cs
if (This.AcceptsRichContent && This.Selection is TextSelection)
{
object pastedData = GetPasteData(dataObjectToApply, DataFormats.XamlPackage);
MemoryStream pastedMemoryStream = pastedData as MemoryStream;
if (pastedMemoryStream != null)
{
object element = WpfPayload.LoadElement(pastedMemoryStream);
if ((element is Section || element is Span) && PasteTextElement(This, (TextElement)element))
{
return(true);
}
else if (element is FrameworkElement)
{
((TextSelection)This.Selection).InsertEmbeddedUIElement((FrameworkElement)element);
return(true);
}
}
}
// Fall to Xaml:
dataObjectToApply = dataObject; // go back to source data object
if (dataObjectToApply.GetDataPresent(DataFormats.Xaml))
{
formatToApply = DataFormats.Xaml;
}
else if (dataObjectToApply.GetDataPresent(DataFormats.Rtf))
{
formatToApply = DataFormats.Rtf;
}
else if (dataObjectToApply.GetDataPresent(DataFormats.UnicodeText))
{
formatToApply = DataFormats.UnicodeText;
}
else if (dataObjectToApply.GetDataPresent(DataFormats.Text))
{
formatToApply = DataFormats.Text;
}
}
if (formatToApply == DataFormats.Xaml)
{
if (This.AcceptsRichContent && This.Selection is TextSelection)
{
object pastedData = GetPasteData(dataObjectToApply, DataFormats.Xaml);
if (pastedData != null && PasteXaml(This, pastedData.ToString()))
{
return(true);
}
}
// Fall to Rtf:
dataObjectToApply = dataObject; // go back to source data object
if (dataObjectToApply.GetDataPresent(DataFormats.Rtf))
{
formatToApply = DataFormats.Rtf;
}
else if (dataObjectToApply.GetDataPresent(DataFormats.UnicodeText))
{
formatToApply = DataFormats.UnicodeText;
}
else if (dataObjectToApply.GetDataPresent(DataFormats.Text))
{
formatToApply = DataFormats.Text;
}
}
if (formatToApply == DataFormats.Rtf)
{
// This demand is present to explicitly disable RTF independant of any
// asserts in the confines of partial trust
// We check unmanaged code instead of all clipboard because in paste
// there is a high level assert for all clipboard in commandmanager.cs
if (This.AcceptsRichContent)
{
object pastedData = GetPasteData(dataObjectToApply, DataFormats.Rtf);
// Convert rtf to xaml text to paste rtf data into the target.
if (pastedData != null)
{
MemoryStream memoryStream = ConvertRtfToXaml(pastedData.ToString());
if (memoryStream != null)
{
TextElement textElement = WpfPayload.LoadElement(memoryStream) as TextElement;
if ((textElement is Section || textElement is Span) && PasteTextElement(This, textElement))
{
return(true);
}
}
}
}
// Fall to plain text:
dataObjectToApply = dataObject; // go back to source data object
if (dataObjectToApply.GetDataPresent(DataFormats.UnicodeText))
{
formatToApply = DataFormats.UnicodeText;
}
else if (dataObjectToApply.GetDataPresent(DataFormats.Text))
{
formatToApply = DataFormats.Text;
}
}
if (formatToApply == DataFormats.UnicodeText)
{
object pastedData = GetPasteData(dataObjectToApply, DataFormats.UnicodeText);
if (pastedData == null)
{
if (dataObjectToApply.GetDataPresent(DataFormats.Text))
{
formatToApply = DataFormats.Text; // fall to plain text
dataObjectToApply = dataObject; // go back to source data object
}
}
else
{
// Dont attempt to recover if pasting Unicode text fails because our only fallback is mbcs text,
// which will either evaluate identically (at best) or
// produce a string with unexpected text (worse!) from WideCharToMultiByte conversion.
return(PastePlainText(This, pastedData.ToString()));
}
}
if (formatToApply == DataFormats.Text)
{
object pastedData = GetPasteData(dataObjectToApply, DataFormats.Text);
if (pastedData != null && PastePlainText(This, pastedData.ToString()))
{
return(true);
}
}
return(false);
}
private static bool PasteContentData(TextEditor This, IDataObject dataObject, IDataObject dataObjectToApply, string formatToApply)
{
if (formatToApply == DataFormats.Bitmap && dataObjectToApply is DataObject && This.AcceptsRichContent && This.Selection is TextSelection && SecurityHelper.CheckUnmanagedCodePermission())
{
BitmapSource bitmapSource = TextEditorCopyPaste.GetPasteData(dataObjectToApply, DataFormats.Bitmap) as BitmapSource;
if (bitmapSource != null)
{
MemoryStream data = WpfPayload.SaveImage(bitmapSource, "image/bmp");
dataObjectToApply = new DataObject();
formatToApply = DataFormats.XamlPackage;
dataObjectToApply.SetData(DataFormats.XamlPackage, data);
}
}
if (formatToApply == DataFormats.XamlPackage)
{
if (This.AcceptsRichContent && This.Selection is TextSelection && SecurityHelper.CheckUnmanagedCodePermission())
{
object pasteData = TextEditorCopyPaste.GetPasteData(dataObjectToApply, DataFormats.XamlPackage);
MemoryStream memoryStream = pasteData as MemoryStream;
if (memoryStream != null)
{
object obj = WpfPayload.LoadElement(memoryStream);
if ((obj is Section || obj is Span) && TextEditorCopyPaste.PasteTextElement(This, (TextElement)obj))
{
return(true);
}
if (obj is FrameworkElement)
{
((TextSelection)This.Selection).InsertEmbeddedUIElement((FrameworkElement)obj);
return(true);
}
}
}
dataObjectToApply = dataObject;
if (dataObjectToApply.GetDataPresent(DataFormats.Xaml))
{
formatToApply = DataFormats.Xaml;
}
else if (SecurityHelper.CheckUnmanagedCodePermission() && dataObjectToApply.GetDataPresent(DataFormats.Rtf))
{
formatToApply = DataFormats.Rtf;
}
else if (dataObjectToApply.GetDataPresent(DataFormats.UnicodeText))
{
formatToApply = DataFormats.UnicodeText;
}
else if (dataObjectToApply.GetDataPresent(DataFormats.Text))
{
formatToApply = DataFormats.Text;
}
}
if (formatToApply == DataFormats.Xaml)
{
if (This.AcceptsRichContent && This.Selection is TextSelection)
{
object pasteData2 = TextEditorCopyPaste.GetPasteData(dataObjectToApply, DataFormats.Xaml);
if (pasteData2 != null && TextEditorCopyPaste.PasteXaml(This, pasteData2.ToString()))
{
return(true);
}
}
dataObjectToApply = dataObject;
if (SecurityHelper.CheckUnmanagedCodePermission() && dataObjectToApply.GetDataPresent(DataFormats.Rtf))
{
formatToApply = DataFormats.Rtf;
}
else if (dataObjectToApply.GetDataPresent(DataFormats.UnicodeText))
{
formatToApply = DataFormats.UnicodeText;
}
else if (dataObjectToApply.GetDataPresent(DataFormats.Text))
{
formatToApply = DataFormats.Text;
}
}
if (formatToApply == DataFormats.Rtf)
{
if (This.AcceptsRichContent && SecurityHelper.CheckUnmanagedCodePermission())
{
object pasteData3 = TextEditorCopyPaste.GetPasteData(dataObjectToApply, DataFormats.Rtf);
if (pasteData3 != null)
{
MemoryStream memoryStream2 = TextEditorCopyPaste.ConvertRtfToXaml(pasteData3.ToString());
if (memoryStream2 != null)
{
TextElement textElement = WpfPayload.LoadElement(memoryStream2) as TextElement;
if ((textElement is Section || textElement is Span) && TextEditorCopyPaste.PasteTextElement(This, textElement))
{
return(true);
}
}
}
}
dataObjectToApply = dataObject;
if (dataObjectToApply.GetDataPresent(DataFormats.UnicodeText))
{
formatToApply = DataFormats.UnicodeText;
}
else if (dataObjectToApply.GetDataPresent(DataFormats.Text))
{
formatToApply = DataFormats.Text;
}
}
if (formatToApply == DataFormats.UnicodeText)
{
object pasteData4 = TextEditorCopyPaste.GetPasteData(dataObjectToApply, DataFormats.UnicodeText);
if (pasteData4 != null)
{
return(TextEditorCopyPaste.PastePlainText(This, pasteData4.ToString()));
}
if (dataObjectToApply.GetDataPresent(DataFormats.Text))
{
formatToApply = DataFormats.Text;
dataObjectToApply = dataObject;
}
}
if (formatToApply == DataFormats.Text)
{
object pasteData5 = TextEditorCopyPaste.GetPasteData(dataObjectToApply, DataFormats.Text);
if (pasteData5 != null && TextEditorCopyPaste.PastePlainText(This, pasteData5.ToString()))
{
return(true);
}
}
return(false);
}