/// <summary>
/// Attempts to create a new HTMLData. This can return null if the DataObject
/// couldn't be created based upon the IDataObject.
/// </summary>
/// <param name="iDataObject">The IDataObject from which to create the HTML Data Object</param>
/// <returns>The HTMLData, null if it couldn't be created.</returns>
public static HTMLData Create(IDataObject iDataObject)
{
string[] loser = iDataObject.GetFormats();
if (OleDataObjectHelper.GetDataPresentSafe(iDataObject, DataFormats.Html))
{
try
{
HTMLData data = new HTMLData(iDataObject, null);
return(string.IsNullOrEmpty(data.HTML) ? null : data);
}
catch (FormatException)
{
// EML files with HTML inside of them report that they are HTML
// However, when we try to read the format, we have problems reading it
// So we will skip loading html that we cannot load
return(null);
}
}
else if (HtmlDocumentClassFormatPresent(iDataObject))
{
return(new HTMLData(iDataObject, (IHTMLDocument2)iDataObject.GetData(typeof(HTMLDocumentClass))));
}
else
{
return(null);
}
}
/// <summary>
/// Creates an ImageData
/// </summary>
/// <param name="iDataObject">The IDataObject from which to create the ImageData</param>
/// <returns>The ImageData, null if no ImageData could be created</returns>
public static ImageData Create(IDataObject iDataObject)
{
if (!OleDataObjectHelper.GetDataPresentSafe(iDataObject, DataFormats.Dib) && !OleDataObjectHelper.GetDataPresentSafe(iDataObject, DataFormats.EnhancedMetafile))
{
return(null);
}
else
{
return(new ImageData(iDataObject));
}
}
public static LightWeightHTMLDocumentData Create(IDataObject iDataObject)
{
string[] loser = iDataObject.GetFormats();
if (OleDataObjectHelper.GetDataPresentSafe(iDataObject, LightWeightHTMLDataObject.LIGHTWEIGHTHTMLDOCUMENTFORMAT))
{
LightWeightHTMLDocument document = (LightWeightHTMLDocument)iDataObject.GetData(LightWeightHTMLDataObject.LIGHTWEIGHTHTMLDOCUMENTFORMAT);
return(new LightWeightHTMLDocumentData(document));
}
else
{
return(null);
}
}
/// <summary>
/// Returns a list of FileItemFormats for a given dataobject
/// </summary>
private static ArrayList GetFormatsForDataObject(IDataObject dataObject)
{
// Mozilla often time is very sketchy about their filedrops. They
// may place null in the filedrop format, or they may place paths
// to files that are highly transient and may or may not be available
// when you need then (many images will get reset to 0 byte files)
// As a result of this, we prefer FileContents when using Mozilla
if (OleDataObjectHelper.GetDataPresentSafe(dataObject, MOZILLA_MARKER))
{
return(mozillaFileItemFormats);
}
else
{
return(fileItemFormats);
}
}
/// <summary>
/// Creates a TextData from an IDataObject
/// </summary>
/// <param name="iDataObject">The IDataObject from which to create a TextData</param>
/// <returns>The TextData, null if no TextData could be created.</returns>
public static TextData Create(IDataObject iDataObject)
{
// Note: Using getData or getDataPresent here will sometimes return text
// even when the text isn't in the list of formats exposed by getFormats
foreach (string format in iDataObject.GetFormats())
{
if (format == DataFormats.UnicodeText || format == DataFormats.Text || format == DataFormats.StringFormat)
{
// Suppress the text from an outlook data object, the text is useless
if (OleDataObjectHelper.GetDataPresentSafe(iDataObject, OUTLOOK_FORMAT_IGNORE_TEXT))
{
return(null);
}
return(new TextData(iDataObject));
}
}
return(null);
}
/// <summary>
/// Creates a URLData based upon an IDataObject
/// </summary>
/// <param name="iDataObject">The IDataObject from which to create the URLData</param>
/// <returns>The URLData, null if no URLData could be created</returns>
public static URLData Create(IDataObject iDataObject)
{
// WinLive Bug 198371: Look at rolling the fix for WinLive 182698 into the OleDataObjectHelper.GetDataPresentSafe method
// For now, we keep the changes targeted.
bool canGetDataPresentDirectlyFromIDataObject = false;
try
{
canGetDataPresentDirectlyFromIDataObject = iDataObject.GetDataPresent(DataFormatsEx.URLFormat) &&
iDataObject.GetDataPresent(DataFormatsEx.FileGroupDescriptorWFormat);
}
catch (Exception e)
{
Debug.Fail(e.ToString());
}
// Validate required format
// WinLive Bug 182698: Assert when pasting a hyperlink from IE
if (canGetDataPresentDirectlyFromIDataObject &&
OleDataObjectHelper.GetDataPresentSafe(iDataObject, DataFormatsEx.URLFormat) &&
OleDataObjectHelper.GetDataPresentSafe(iDataObject, DataFormatsEx.FileGroupDescriptorWFormat))
{
return(new URLData(iDataObject));
}
else
{
//check to see if the dataObject contains a single .url file,
//if so, create the URLData from that.
FileData fileData = FileData.Create(iDataObject);
if (fileData != null && fileData.Files.Length == 1)
{
string filePath = fileData.Files[0].ContentsPath;
if (PathHelper.IsPathUrlFile(filePath))
{
URLData urlData = new URLData(iDataObject, UrlHelper.GetUrlFromShortCutFile(filePath), Path.GetFileNameWithoutExtension(filePath));
urlData.DateCreated = File.GetCreationTime(filePath);
urlData.DateModified = File.GetLastWriteTime(filePath);
return(urlData);
}
}
}
return(null);
}
/// <summary>
/// Does the passed data object have this format?
/// </summary>
/// <param name="dataObject">data object</param>
/// <returns>true if the data object has the format, otherwise false</returns>
public bool CanCreateFrom(IDataObject dataObject)
{
return(OleDataObjectHelper.GetDataPresentSafe(dataObject, DataFormats.FileDrop) && dataObject.GetData(DataFormats.FileDrop) != null);
}
/// <summary>
/// Does the passed data object have this format?
/// </summary>
/// <param name="dataObject">data object</param>
/// <returns>true if the data object has the format, otherwise false</returns>
public bool CanCreateFrom(IDataObject dataObject)
{
return(OleDataObjectHelper.GetDataPresentSafe(dataObject, typeof(FileItem[])));
}
public bool GetDataPresent(Type format)
{
Validate();
return(OleDataObjectHelper.GetDataPresentSafe(m_dataObject, format));
}
private static bool HtmlDocumentClassFormatPresent(IDataObject iDataObject)
{
return(OleDataObjectHelper.GetDataPresentSafe(iDataObject, typeof(HTMLDocumentClass)));
}
