/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @author Michael Danilov, Pavel Dolgov
* @version $Revision$
*/
package org.apache.harmony.awt.datatransfer.windows;
import java.awt.datatransfer.ClipboardOwner;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.Transferable;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.io.IOException;
import org.apache.harmony.awt.ContextStorage;
import org.apache.harmony.awt.datatransfer.DataProxy;
import org.apache.harmony.awt.datatransfer.DataSnapshot;
import org.apache.harmony.awt.datatransfer.DataSource;
import org.apache.harmony.awt.datatransfer.NativeClipboard;
import org.apache.harmony.awt.nativebridge.windows.WinDataTransfer;
import org.apache.harmony.awt.wtk.windows.WinEventQueue;
public final class WinClipboard extends NativeClipboard
implements WinEventQueue.Preprocessor {
private final WinEventQueue winEventQueue;
public WinClipboard() {
super("System");
winEventQueue = ((WinEventQueue) ContextStorage.getNativeEventQueue());
winEventQueue.addPreprocessor(this);
}
@Override
public void onShutdown() {
}
@Override
public void onRestart() {
}
@Override
public void setContents(Transferable contents, ClipboardOwner owner) {
DataSource dc = new DataSource(contents);
final DataSnapshot snapshot = new DataSnapshot(dc);
WinEventQueue.Task task = new WinEventQueue.Task() {
@Override
public void perform() {
WinDataTransfer.setClipboardContents(snapshot);
}
};
winEventQueue.performTask(task);
// TODO: fire flavor change events
}
@Override
public Object getData(DataFlavor flavor)
throws UnsupportedFlavorException, IOException {
return getContents(this).getTransferData(flavor);
}
@Override
public Transferable getContents(Object requestor) {
WinEventQueue.Task task = new WinEventQueue.Task() {
@Override
public void perform() {
WinDataTransfer.IDataObject dataObject =
WinDataTransfer.getClipboardContents();
DataSnapshot snapshot = new DataSnapshot(dataObject);
dataObject.release();
returnValue = new DataProxy(snapshot);
}
};
winEventQueue.performTask(task);
return (DataProxy)task.returnValue;
}
@Override
public DataFlavor[] getAvailableDataFlavors() {
Transferable t = getContents(this);
return (t != null) ?
t.getTransferDataFlavors() : new DataFlavor[0];
}
public boolean preprocess(long hwnd, int msg,
long wParam, long lParam,
long[] result) {
// TODO: track changes in Windows clipboard
return false;
}
}