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// Eric Maupin <ermau@xamarin.com>
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// Copyright (c) 2012 Xamarin Inc
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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using System.Threading;
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using System.Threading.Tasks;
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using WindowsClipboard = System.Windows.Clipboard;
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namespace Xwt.WPFBackend
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public class ClipboardBackend
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WindowsClipboard.Clear();
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public void SetData (TransferDataType type, Func<object> dataSource)
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throw new ArgumentNullException ("type");
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if (dataSource == null)
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throw new ArgumentNullException ("dataSource");
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WindowsClipboard.SetData (type.ToWpfDataFormat (), dataSource ());
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public bool IsTypeAvailable (TransferDataType type)
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throw new ArgumentNullException ("type");
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return WindowsClipboard.ContainsData (type.ToWpfDataFormat ());
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public object GetData (TransferDataType type)
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throw new ArgumentNullException ("type");
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while (!IsTypeAvailable (type))
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return WindowsClipboard.GetData (type.ToWpfDataFormat ());
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public IAsyncResult BeginGetData (TransferDataType type, AsyncCallback callback, object state)
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throw new ArgumentNullException ("type");
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throw new ArgumentNullException ("callback");
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return Task<object>.Factory.StartNew (s => GetData (type), state)
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.ContinueWith (t => callback (t));
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public object EndGetData (IAsyncResult ares)
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throw new ArgumentNullException ("ares");
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Task<object> t = ares as Task<object>;
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throw new ArgumentException ("ares is the incorrect type", "ares");