org.eclipse.osbp.vaadin.addons.designer.overlay/src/org/eclipse/osbp/vaadin/addons/designer/overlay/AlignmentInfoUtil.java

/**
 *                                                                            
 * Copyright (c) 2011, 2016 - Loetz GmbH&Co.KG (69115 Heidelberg, Germany)
 *                                                                            
 * All rights reserved. This program and the accompanying materials           
 * are made available under the terms of the Eclipse Public License v1.0       
 * which accompanies this distribution, and is available at                  
 * http://www.eclipse.org/legal/epl-v10.html                                 
 *                                                                            
 * Contributors:   
 * Florian Pirchner <florian.pirchner@gmail.com> - Initial implementation
 */
package org.eclipse.osbp.vaadin.addons.designer.overlay;

import org.eclipse.osbp.vaadin.addons.designer.overlay.client.widgets.AlignmentInfo;

import com.vaadin.ui.Alignment;
import com.vaadin.ui.Component;
import com.vaadin.ui.GridLayout;
import com.vaadin.ui.HorizontalLayout;
import com.vaadin.ui.VerticalLayout;

// TODO: Auto-generated Javadoc
/**
 * Util to deal with {@link AlignmentInfo}.
 */
public class AlignmentInfoUtil {

	/**
	 * Returns the horizontal width for the given alignment.
	 *
	 * @param alignment the alignment
	 * @return the horizonal width
	 */
	public static String getHorizonalWidth(AlignmentInfo alignment) {
		if (alignment.isHorizontalFill()) {
			return "100%";
		} else {
			return "-1px";
		}
	}

	/**
	 * Returns the vertical height for the given alignment.
	 *
	 * @param alignment the alignment
	 * @return the vertical height
	 */
	public static String getVerticalHeight(AlignmentInfo alignment) {
		if (alignment.isVerticalFill()) {
			return "100%";
		} else {
			return "-1px";
		}
	}

	/**
	 * Converts alignment info to vaadin alignment.
	 *
	 * @param alignment the alignment
	 * @return the alignment
	 */
	public static Alignment toVaadin(AlignmentInfo alignment) {
		switch (alignment) {
		case BOTTOM_CENTER:
			return Alignment.BOTTOM_CENTER;
		case BOTTOM_LEFT:
			return Alignment.BOTTOM_LEFT;
		case BOTTOM_RIGHT:
			return Alignment.BOTTOM_RIGHT;
		case MIDDLE_CENTER:
			return Alignment.MIDDLE_CENTER;
		case MIDDLE_LEFT:
			return Alignment.MIDDLE_LEFT;
		case MIDDLE_RIGHT:
			return Alignment.MIDDLE_RIGHT;
		case TOP_LEFT:
			return Alignment.TOP_LEFT;
		case TOP_RIGHT:
			return Alignment.TOP_RIGHT;
		case TOP_CENTER:
			return Alignment.TOP_CENTER;
		// fill here
		case BOTTOM_FILL:
			// fill the bottom line -> position at origin
			return Alignment.BOTTOM_LEFT;
		case MIDDLE_FILL:
			// fill the middle line -> position at origin
			return Alignment.MIDDLE_LEFT;
		case TOP_FILL:
			// fill the top line -> position at origin
			return Alignment.TOP_LEFT;
		case FILL_CENTER:
			// fill the center row -> position at origin
			return Alignment.TOP_CENTER;
		case FILL_FILL:
			// fill the all -> position at origin
			return Alignment.TOP_LEFT;
		case FILL_LEFT:
			// fill the left row -> position at origin
			return Alignment.TOP_LEFT;
		case FILL_RIGHT:
			// fill the right row -> position at origin
			return Alignment.TOP_RIGHT;
		}

		return Alignment.TOP_LEFT;
	}

	/**
	 * Applies the alignment to the given layout and child.
	 *
	 * @param layout the layout
	 * @param child the child
	 * @param alignment the alignment
	 */
	public static void apply(GridLayout layout, Component child, AlignmentInfo alignment) {
		layout.setComponentAlignment(child, AlignmentInfoUtil.toVaadin(alignment));

		child.setWidth(AlignmentInfoUtil.getHorizonalWidth(alignment));
		child.setHeight(AlignmentInfoUtil.getVerticalHeight(alignment));

		if (alignment.isHorizontalFill()) {
			layout.setColumnExpandRatio(layout.getComponentArea(child).getColumn1(), 1.0f);
		} else {
			layout.setColumnExpandRatio(layout.getComponentArea(child).getColumn1(), 0f);
		}

		if (alignment.isVerticalFill()) {
			layout.setRowExpandRatio(layout.getComponentArea(child).getRow1(), 1.0f);
		} else {
			layout.setRowExpandRatio(layout.getComponentArea(child).getRow1(), 0f);
		}
	}

	/**
	 * Applies the alignment to the given layout and child.
	 *
	 * @param layout the layout
	 * @param child the child
	 * @param alignment the alignment
	 */
	public static void apply(VerticalLayout layout, Component child, AlignmentInfo alignment) {
		layout.setComponentAlignment(child, AlignmentInfoUtil.toVaadin(alignment));

		child.setWidth(AlignmentInfoUtil.getHorizonalWidth(alignment));
		child.setHeight(AlignmentInfoUtil.getVerticalHeight(alignment));

		if (alignment.isVerticalFill()) {
			layout.setExpandRatio(child, 1.0f);
		} else {
			layout.setExpandRatio(child, 0f);
		}
	}

	/**
	 * Applies the alignment to the given layout and child.
	 *
	 * @param layout the layout
	 * @param child the child
	 * @param alignment the alignment
	 */
	public static void apply(HorizontalLayout layout, Component child, AlignmentInfo alignment) {
		layout.setComponentAlignment(child, AlignmentInfoUtil.toVaadin(alignment));

		child.setWidth(AlignmentInfoUtil.getHorizonalWidth(alignment));
		child.setHeight(AlignmentInfoUtil.getVerticalHeight(alignment));

		if (alignment.isHorizontalFill()) {
			layout.setExpandRatio(child, 1.0f);
		} else {
			layout.setExpandRatio(child, 0f);
		}
	}
}