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//---------------------------------------------------------------------------
//
// File: TextClipboardData.cs
//
// Description:
// A base class which can copy a unicode text to the IDataObject.
// It also can get the unicode text from the IDataObject and create a corresponding textbox.
//
// Features:
//
// History:
// 11/17/2004 waynezen: Created
//
// Copyright (C) 2001 by Microsoft Corporation. All rights reserved.
//
//---------------------------------------------------------------------------
using System;
using System.Collections;
using System.Collections.Generic;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Markup;
using System.Text;
namespace MS.Internal.Ink
{
internal class TextClipboardData : ElementsClipboardData
{
//-------------------------------------------------------------------------------
//
// Constructors
//
//-------------------------------------------------------------------------------
#region Constructors
// The default constructor
internal TextClipboardData() : this(null) {}
// The constructor with a string as argument
internal TextClipboardData(string text)
{
_text = text;
}
#endregion Constructors
// Checks if the data can be pasted.
internal override bool CanPaste(IDataObject dataObject)
{
return ( dataObject.GetDataPresent(DataFormats.UnicodeText, false)
|| dataObject.GetDataPresent(DataFormats.Text, false)
|| dataObject.GetDataPresent(DataFormats.OemText, false) );
}
//-------------------------------------------------------------------------------
//
// Protected Methods
//
//-------------------------------------------------------------------------------
#region Protected Methods
// Checks if the data can be copied.
protected override bool CanCopy()
{
return !string.IsNullOrEmpty(_text);
}
// Copy the text to the IDataObject
protected override void DoCopy(IDataObject dataObject)
{
// Put the text to the clipboard
dataObject.SetData(DataFormats.UnicodeText, _text, true);
}
// Retrieves the text from the IDataObject instance.
// Then create a textbox with the text data.
protected override void DoPaste(IDataObject dataObject)
{
ElementList = new List<UIElement>();
// Get the string from the data object.
string text = dataObject.GetData(DataFormats.UnicodeText, true) as string;
if ( String.IsNullOrEmpty(text) )
{
// OemText can be retrieved as CF_TEXT.
text = dataObject.GetData(DataFormats.Text, true) as string;
}
if ( !String.IsNullOrEmpty(text) )
{
// Now, create a text box and set the text to it.
TextBox textBox = new TextBox();
textBox.Text = text;
textBox.TextWrapping = TextWrapping.Wrap;
// Add the textbox to the internal array list.
ElementList.Add(textBox);
}
}
#endregion Protected Methods
//-------------------------------------------------------------------------------
//
// Private Fields
//
//-------------------------------------------------------------------------------
#region Private Fields
private string _text;
#endregion Private Fields
}
}
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