com.github.becausetesting.commonswindow.utils.ClipboardUtils Maven / Gradle / Ivy

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package com.github.becausetesting.commonswindow.utils;

/*-
 * false
 * commons-window
 * sectionDelimiter
 * Copyright (C) 2016 Alter Hu
 * sectionDelimiter
 * Licensed 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.
 * #L%
 */

/*-
 * #%L
 * commons-window
 * $Id:$
 * $HeadURL:$
 * %%
 * Copyright (C) 2016 Alter Hu
 * %%
 * Licensed 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.
 * #L%
 */


import java.awt.Toolkit;
import java.awt.datatransfer.Clipboard;
import java.awt.datatransfer.ClipboardOwner;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.StringSelection;
import java.awt.datatransfer.Transferable;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.io.IOException;

public class ClipboardUtils  implements ClipboardOwner{

	
	/**
	   * Empty implementation of the ClipboardOwner interface.
	   */
	   @Override 
	   public void lostOwnership(Clipboard aClipboard, Transferable aContents){
	     //do nothing
	   }

	  /**
	  * Place a String on the clipboard, and make this class the
	  * owner of the Clipboard's contents.
	  */
	  /**
	 * @param aString clipboard string
	 */
	public void setClipboardContents(String aString){
	    StringSelection stringSelection = new StringSelection(aString);
	    Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
	    clipboard.setContents(stringSelection, this);
	  }

	  /**
	  * Get the String residing on the clipboard.
	  *
	  * @return any text found on the Clipboard; if none found, return an
	  * empty String.
	  */
	  public String getClipboardContents() {
	    String result = "";
	    Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
	    //odd: the Object param of getContents is not currently used
	    Transferable contents = clipboard.getContents(null);
	    boolean hasTransferableText =
	      (contents != null) &&
	      contents.isDataFlavorSupported(DataFlavor.stringFlavor)
	    ;
	    if (hasTransferableText) {
	      try {
	        result = (String)contents.getTransferData(DataFlavor.stringFlavor);
	      }
	      catch (UnsupportedFlavorException | IOException ex){
	        System.out.println(ex);
	        ex.printStackTrace();
	      }
	    }
	    return result;
	  }
}