ChargeWarningComposite.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;

import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;

import com.amazonaws.eclipse.ec2.Ec2Plugin;

/**
 * Simple composite that displays a message to make sure users understand that
 * launching EC2 instances will charge their account.
 */
public class ChargeWarningComposite extends Composite {

	/**
	 * Creates a new ChargeWarningComposite as a child in the specified
	 * composite, with the specified styling information.
	 * 
	 * @param parent
	 *            The parent composite that will contain this new
	 *            ChargeWarningComposite.
	 * @param style
	 *            The styling bits for this new Composite.
	 */
	public ChargeWarningComposite(Composite parent, int style) {
		super(parent, style);

		setLayout(new GridLayout(2, false));

		Label infoIconLabel = new Label(this, SWT.NONE);
		infoIconLabel.setImage(Ec2Plugin.getDefault().getImageRegistry().get("info"));
		infoIconLabel.setLayoutData(new GridData());
		
		Label infoLabel = new Label(this, SWT.WRAP);
		infoLabel.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
		infoLabel.setText("You will be charged the hourly rate for any instances you launch until you successfully shut them down.");
		italicizeLabel(infoLabel);		
	}
	
	
	/*
	 * Private Interface
	 */

	/**
	 * Changes the font style on the specified label so that the text is
	 * displayed in italics.
	 * 
	 * @param label
	 *            The label to change.
	 */
	private void italicizeLabel(Label label) {
		Font font = label.getFont();
		FontData[] fontDataArray = font.getFontData();
		for (FontData fontData : fontDataArray) {
			fontData.setStyle(SWT.ITALIC);
		}
		
		Font newFont = new Font(Display.getDefault(), fontDataArray);
		label.setFont(newFont);
	}
	
}