getpassworddialog.java

基于Eclipse RCP开发的管理工具

 /*  
  * Copyright 2006 Marcel Schoffelmeer 
  * 
  * 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.
  */

package com.s10r.manager.dialogs;

import java.io.File;

import org.eclipse.jface.dialogs.IInputValidator;
import org.eclipse.jface.dialogs.InputDialog;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

public class GetPasswordDialog extends InputDialog
{
	private static IInputValidator inputValidator = new IInputValidator()
	{
		public String isValid(String newText)
		{
			if (newText == null || newText.length() == 0)
			{
				return "Password entry is required";
			}
			else
			{
				// OK
				return null;
			}
		}
	};

	public GetPasswordDialog(Shell parentShell, File inFile)
    {    			
        super(parentShell, "Enter password",
				"Enter pasword (to decrypt " + inFile.getName() + ")", "", inputValidator);
    }
    
    @Override
    // note: doesn't get called so no use
    protected Text getText()
    {
        Text t =  super.getText();
        t.setEchoChar('*');
        return t;
    }
    @Override
    protected Control createDialogArea(Composite arg0)
    {
        Composite c =  (Composite)super.createDialogArea(arg0);
        for (Control child: c.getChildren())
        {
            if (child instanceof Text)
            {
                ((Text)child).setEchoChar('*');
                
                // at some Eclipse release, a second text field starts to 
                // occur, so break to make sure we dont set the echo
                // char to the message text field to '*'
                break;
            }
        }
        return c;
    }
    
}