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/*******************************************************************************
 * Copyright (c) 2000, 2007 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     Atsuhiko Yamanaka, JCraft,Inc. - initial API and implementation.
 *     IBM Corporation - ongoing maintenance
 *******************************************************************************/
package org.eclipse.jsch.internal.ui.preference;

import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jsch.internal.ui.Messages;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;


class PassphraseDialog extends Dialog{
  protected Text passphraseField;
  protected String passphrase=null;
  protected String message=null;

  public PassphraseDialog(Shell parentShell, String message){
    super(parentShell);
    this.message=message;
  }

  protected void configureShell(Shell newShell){
    super.configureShell(newShell);
    newShell.setText(message);
  }

  public void create(){
    super.create();
    passphraseField.setFocus();
  }

  protected Control createDialogArea(Composite parent){
    initializeDialogUnits(parent);
    Composite main=new Composite(parent, SWT.NONE);

    GridLayout layout=new GridLayout();
    layout.numColumns=3;
    layout.marginHeight=convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
    layout.marginWidth=convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_MARGIN);
    layout.verticalSpacing=convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_SPACING);
    layout.horizontalSpacing=convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);
    main.setLayout(layout);
    main.setLayoutData(new GridData(GridData.FILL_BOTH));

    if(message!=null){
      Label messageLabel=new Label(main, SWT.WRAP);
      messageLabel.setText(message);
      GridData data=new GridData(GridData.FILL_HORIZONTAL);
      data.horizontalSpan=3;
      messageLabel.setLayoutData(data);
    }

    createPassphraseFields(main);
    Dialog.applyDialogFont(main);
    return main;
  }

  protected void createPassphraseFields(Composite parent){
    new Label(parent, SWT.NONE).setText(Messages.CVSSSH2PreferencePage_127);
    passphraseField=new Text(parent, SWT.BORDER);
    GridData data=new GridData(GridData.FILL_HORIZONTAL);
    data.widthHint=convertHorizontalDLUsToPixels(IDialogConstants.ENTRY_FIELD_WIDTH);
    passphraseField.setLayoutData(data);
    passphraseField.setEchoChar('*');

    new Label(parent, SWT.NONE);
  }

  public String getPassphrase(){
    return passphrase;
  }

  protected void okPressed(){
    String _passphrase=passphraseField.getText();
    if(_passphrase==null||_passphrase.length()==0){
      return;
    }
    passphrase=_passphrase;
    super.okPressed();
  }

  protected void cancelPressed(){
    passphrase=null;
    super.cancelPressed();
  }
}

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