CreateKeyPairDialog.java

/*
 * Copyright 2008-2012 Amazon Technologies, Inc. 
 *
 * 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://aws.amazon.com/apache2.0
 *
 * This file 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.amazonaws.eclipse.ec2.ui.keypair;

import java.io.File;

import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.DirectoryDialog;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

import com.amazonaws.eclipse.ec2.keypairs.KeyPairManager;

/**
 * A dialog for creating a new EC2 Key Pair.
 */
class CreateKeyPairDialog extends Dialog {

	private Text keyPairNameText;
	private Text privateKeyDirectoryText;
	
	private String keyPairName;
	private String privateKeyDirectoryName;
	
	private final String accountId;

	protected CreateKeyPairDialog(Shell parentShell, String accountId) {
		super(parentShell);
		this.accountId = accountId;
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.dialogs.Dialog#create()
	 */
	@Override
	public void create() {
		super.create();
		
		this.getShell().setText("Create New Key Pair");
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.dialogs.Dialog#createButtonBar(org.eclipse.swt.widgets.Composite)
	 */
	@Override
	protected Control createButtonBar(Composite parent) {
		Control control = super.createButtonBar(parent);
		
		updateOkButton();
		
		return control;
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets.Composite)
	 */
	@Override
	protected Control createDialogArea(Composite parent) {
		ModifyListener listener = new ModifyListener() {
			public void modifyText(ModifyEvent e) {
				updateOkButton();
			}
		};
		
		Composite composite = new Composite(parent, SWT.BORDER);
		GridLayout gridLayout = new GridLayout(3, false);
		gridLayout.marginHeight = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
		gridLayout.marginWidth = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_MARGIN);
		gridLayout.verticalSpacing = 0;
		gridLayout.horizontalSpacing = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);

		composite.setLayout(gridLayout);
		composite.setLayoutData(new GridData(GridData.FILL_BOTH));

		GridData gridData;
					
		Label label = new Label(composite, SWT.NONE);
		label.setText("Key Pair Name:");
		gridData = new GridData(GridData.FILL_BOTH);
		gridData.horizontalAlignment = SWT.LEFT;
		gridData.verticalAlignment = SWT.CENTER;
		gridData.horizontalSpan = 3;
		label.setLayoutData(gridData);

		keyPairNameText = new Text(composite, SWT.BORDER);
		keyPairNameText.addModifyListener(listener);
		gridData = new GridData(GridData.FILL_BOTH);
		gridData.horizontalSpan = 3;
		keyPairNameText.setLayoutData(gridData);
		
		label = new Label(composite, SWT.NONE);
		label.setText("Private Key Directory:");
		gridData = new GridData(GridData.FILL_BOTH);
		gridData.horizontalAlignment = SWT.LEFT;
		gridData.verticalAlignment = SWT.CENTER;
		gridData.horizontalSpan = 3;
		label.setLayoutData(gridData);
		
		privateKeyDirectoryText = new Text(composite, SWT.BORDER);
		privateKeyDirectoryText.addModifyListener(listener);
		
		File defaultPrivateKeyDirectory = KeyPairManager.getDefaultPrivateKeyDirectory();
		if (defaultPrivateKeyDirectory != null) {
			privateKeyDirectoryText.setText(defaultPrivateKeyDirectory.getAbsolutePath());
		}
		
		gridData = new GridData(GridData.FILL_BOTH);
		gridData.horizontalSpan = 2;
		gridData.widthHint = 300;
		privateKeyDirectoryText.setLayoutData(gridData);
		
		Button button = new Button(composite, SWT.PUSH);
		button.setText("Browse...");
		button.addSelectionListener(new SelectionListener() {
			public void widgetDefaultSelected(SelectionEvent e) {}

			public void widgetSelected(SelectionEvent e) {
				DirectoryDialog dialog = new DirectoryDialog(Display.getCurrent().getActiveShell());
				String directoryPath = dialog.open();
				
				privateKeyDirectoryText.setText(directoryPath);
			}				
		});
		
		applyDialogFont(composite);
		
		return composite;
	}

	private void updateOkButton() {
		boolean b = true;
		if (keyPairNameText == null || keyPairNameText.getText().length() == 0 || privateKeyDirectoryText == null || privateKeyDirectoryText.getText().length() == 0) {
			b = false;
		}
		
		Button okButton = getButton(OK);
		if (okButton == null) {
			return;
		}
		
		okButton.setEnabled(b);
	}
	
	public String getKeyPairName() {
		return keyPairName;
	}
	
	public String getPrivateKeyDirectory() {
		return privateKeyDirectoryName;
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.dialogs.Dialog#okPressed()
	 */
	@Override
	protected void okPressed() {
		privateKeyDirectoryName = privateKeyDirectoryText.getText();
		keyPairName = keyPairNameText.getText();
		
		super.okPressed();
	}

}